CN108622363B - Protective device for limiting - Google Patents
Protective device for limiting Download PDFInfo
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- CN108622363B CN108622363B CN201810714462.8A CN201810714462A CN108622363B CN 108622363 B CN108622363 B CN 108622363B CN 201810714462 A CN201810714462 A CN 201810714462A CN 108622363 B CN108622363 B CN 108622363B
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- limiting
- guide rod
- fastening plate
- sleeve
- limit
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- 238000002955 isolation Methods 0.000 abstract description 70
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/30—Mounting of propulsion plant or unit, e.g. for anti-vibration purposes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a limiting protective device, which belongs to the technical field of safety protection and comprises a limiting seat, a first fastening plate, a ball bearing, a limiting guide rod, an elastic supporting component, a cover plate, a first sleeve, a second fastening plate and a baffle plate. The first fastening plate is arranged right above the limiting seat; the ball bearing is arranged in the middle of the top of the limit seat; one end of the limit guide rod is hemispherical; the other end of the limit guide rod is connected with the limit seat through the elastic support component; the cover plate and the first fastening plate have a limiting distance; the two axial ends of the first sleeve are open; the second fastening plate and the cover plate are respectively arranged at two axial ends of the first sleeve to form a sealing cavity; and the baffle is vertically arranged on the upper end surface of the second fastening plate. Therefore, the technical effects that the vibration reduction and isolation device is suitable for different working conditions, the reliability and the working efficiency are improved, and the protection function of the limiting guide rod is realized when the limiting rigidity of the vibration reduction and isolation device is not changed are achieved.
Description
Technical Field
The invention belongs to the technical field of safety protection, and particularly relates to a limiting protection device.
Background
Vibration and noise reduction on ships are increasingly receiving attention. The power equipment on the ship basically adopts vibration reduction and isolation technology, has single-layer vibration isolation, double-layer vibration isolation and large-scale floating raft vibration reduction, effectively reduces the vibration of the power equipment to be transmitted to a supporting platform or a ship body structure, improves the comfort level of ship workers, simultaneously can also improve the sound concealment of the ship, and enhances the operational capability of the ship.
Under the swing impact of sea waves or in a maneuvering state, the power equipment is greatly displaced after the vibration reduction and isolation device is additionally arranged on the power equipment, so that collision caused by large displacement is avoided among the power equipment, or stress concentration is caused to damage a pipeline connected with the power equipment due to the large displacement, a protection device is often added on the vibration reduction and isolation device, and the displacement of the power equipment on the vibration reduction and isolation device is controlled within a safety threshold. The vibration reduction and isolation device is widely applied by adding the protection device and has obvious effect. Meanwhile, the position protection device is often damaged due to overlarge impact force.
In summary, in the prior art, there is a technical problem that the rigidity of the vibration reduction and isolation device is too high, the vibration reduction and isolation of the vibration reduction and isolation device is poor, and the self-protection capability of the vibration reduction and isolation device is weak.
Disclosure of Invention
The invention aims to solve the technical problems that the rigidity of the vibration reduction and isolation device is overlarge, the vibration reduction and isolation of the vibration reduction and isolation device is poor, and the self-protection capability of the vibration reduction and isolation device is weak.
In order to solve the technical problems, the invention provides a protection device for limiting, which comprises a limiting seat; the first fastening plate is arranged right above the limiting seat, the first fastening plate and the top of the limiting seat are provided with limiting distances, and the side surface of the first fastening plate, which faces the limiting seat, is provided with a spherical groove; the ball bearing is arranged in the middle of the top of the limit seat; one end of the limiting guide rod is hemispherical, one end of the limiting guide rod can be passively matched with the spherical groove in a sliding mode, and the other end of the limiting guide rod penetrates through the ball bearing; the other end of the limit guide rod is connected with the limit seat through the elastic support component; the cover plate and the first fastening plate have the limiting distance; a first sleeve, the two axial ends of which are open; the second fastening plate and the cover plate are respectively arranged at two axial ends of the first sleeve to form a sealing cavity; the baffle, the baffle sets up perpendicularly at the up end of second fastening plate, vertical first spout to has been seted up to the outer wall of baffle, horizontal draw-in groove has been seted up to the outer wall of baffle to first spout and draw-in groove intercommunication, the second sleeve is installed to the lateral wall of baffle, telescopic inner chamber fixed connection compression spring of second, the telescopic inner chamber grafting gag lever post of draw-in groove, the one end of gag lever post inserts first telescopic inner chamber and is connected with compression spring, the gag lever post extends to the below of spacing guide bar, the outer wall fixed connection push rod of gag lever post, the push rod inserts the inner chamber of first spout and is connected with the movable block, the second spout has been seted up to the outer wall of gag lever post, installs the wedge with movable block sliding connection in the second spout.
Further, a first through hole is formed in the middle of the cover plate, a mounting flange is arranged on the inner side of the bottom of the first through hole, the ball bearing is mounted in the first through hole, and the ball bearing is arranged on the mounting flange.
Further, the protection device further comprises a liquid guide column, the liquid guide column is coaxially arranged in the first sleeve, the other end of the limiting guide rod coaxially penetrates through the liquid guide column, and the other end of the limiting guide rod is fastened on the liquid guide column through a nut; the elastic support assembly comprises a first elastic support unit and a second elastic support unit, the first elastic support unit comprises more than one first elastic piece, two ends of the more than one first elastic piece are respectively connected with the bottom of the cover plate and the top of the liquid guide column, the second elastic support unit comprises more than one second elastic piece, and two ends of the more than one second elastic piece are respectively connected with the bottom of the liquid guide column and the top of the second fastening plate.
Further, the first elastic supporting unit further comprises a plurality of first limiting blocks, and the plurality of first limiting blocks are respectively arranged at the bottom of the cover plate and the top end of the liquid guide column and are connected with the first elastic piece; the second elastic supporting unit further comprises a plurality of second fastening plates, and the second fastening plates are respectively arranged at the bottom ends of the liquid guide columns and the tops of the second fastening plates and connected with the second elastic pieces.
Further, a limiting hole is formed in the middle of the top of the liquid guiding column, a limiting piece is arranged in the middle of the limiting guide rod, and the limiting piece is embedded in the limiting hole.
Further, magnetorheological fluid is filled in the sealing cavity; the protection device further comprises a displacement sensor and an excitation coil, wherein the displacement sensor is arranged on one side, facing the first fastening plate, of the cover plate, the excitation coil is fixedly arranged on the outer peripheral surface of the liquid guide column, and a gap is formed between the excitation coil and the first sleeve.
Further, the liquid guiding column is provided with more than one liquid guiding holes, and the central axis of the more than one liquid guiding holes is parallel to the central axis of the liquid guiding column.
Further, the protection device further comprises two rubber rings, and the two rubber rings are respectively arranged at two axial ends of the outer peripheral surface of the liquid guide column.
The beneficial effects are that:
the invention provides a protection device for limiting, wherein a first fastening plate is used for being connected with a vibration reduction and isolation device, and as the top of the first fastening plate and the top of a limiting seat are provided with a limiting distance, a power device provided with the vibration reduction and isolation device can shake towards the direction of the limiting seat under the swing impact of sea waves or in a maneuvering state; because the side surface of the first fastening plate, which faces the limit seat, is provided with the spherical groove, and one end of the limit guide rod is hemispherical, one end of the limit guide rod can be passively in sliding fit with the spherical groove, and when the power equipment can shake towards the direction of the limit seat, the first fastening plate can be contacted with one end of the limit guide rod, and one end of the limit guide rod can slide in the spherical groove; because the ball bearing is arranged in the middle of the top of the limit seat, the other end of the limit guide rod passes through the ball bearing, and the limit guide rod can freely rotate and axially slide in the ball bearing so as to adapt to the shaking of the power equipment provided with the vibration reduction and isolation device; the other end of the limit guide rod is connected with the limit seat through the elastic supporting component so as to prevent the limit guide rod from separating from the ball bearing and limit the movement of the limit guide rod. Meanwhile, as the baffle is vertically arranged on the upper end surface of the second fastening plate, the first chute is communicated with the clamping groove, and one end of the limiting rod is inserted into the inner cavity of the second sleeve and connected with the compression spring; when the limit guide rod is subjected to the movement of the great impact force, the limit guide rod can realize the limit effect on the limit guide rod under the action of the elastic force of the compression spring, and the limit guide rod is prevented from sliding abnormally downwards to damage the bottom of the device. Therefore, when the limiting rigidity of the vibration reduction and isolation device is not changed, the vibration reduction and isolation device can be ensured to adapt to different working conditions, the reliability and the working efficiency are improved, and the technical effect of protecting the limiting guide rod is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a protection device for limiting according to an embodiment of the present invention;
FIG. 2 is a schematic view of a baffle of a protective device for limiting according to an embodiment of the present invention;
fig. 3 is a schematic view of a vibration isolation panel of a protection device for limiting according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an impedance mechanism of a protective device for limiting according to an embodiment of the present invention.
Wherein,
1-first fastening plate, 2-protective ring, 3-cover plate, 4-first limit block, 5-first elastic piece, 6-sealing plug, 7-nut, 8-bolt, 9-second fastening plate, 10-magnetorheological fluid, 11-rubber ring, 12-exciting coil, 13-fluid guiding column, 14-first sleeve, 15-ball bearing, 16-limit guide rod, 17-displacement sensor, 18-ball groove, 19-first through hole, 20-installation flange, 21-second elastic piece, 22-second limit block, 23-limit hole, 24-limit piece, 25-fluid guiding hole, 26-baffle, 27-limit rod, 28-second sleeve, 29-push rod, 30-movable block, 31-compression spring, 32-limit sleeve, 33-limit ring, 34-elastic base, 35-carbon fiber bearing layer, 36-vibration isolation interlayer, 37-movable panel, 38-movable web, 39-adjustable toggle plate, 40-public installation panel, 41-fixed support toggle plate, 42-fixed web plate, 43-44-45-installation channel and 45-installation hole.
Detailed Description
The invention discloses a protection device for limiting, wherein a first fastening plate 1 is used for being connected with a vibration reduction and isolation device, and as the top of the first fastening plate 1 and the top of a limiting seat are provided with limiting distances, power equipment provided with the vibration reduction and isolation device can shake towards the direction of the limiting seat under the condition of swing impact of sea waves or in a maneuvering state; because the side surface of the first fastening plate 1, which faces the limit seat, is provided with the spherical groove, and one end of the limit guide rod 16 is hemispherical, one end of the limit guide rod 16 can be passively matched with the spherical groove in a sliding manner, when the power equipment can shake towards the direction of the limit seat, the first fastening plate 1 can be contacted with one end of the limit guide rod 16, and one end of the limit guide rod 16 can slide in the spherical groove; because the ball bearing is arranged in the middle of the top of the limit seat, the other end of the limit guide rod 16 passes through the ball bearing, and the limit guide rod can freely rotate and axially slide in the ball bearing so as to adapt to the shaking of the power equipment provided with the vibration reduction and isolation device; because the other end of the limit guide rod 16 is connected with the limit seat through the elastic supporting component, the limit guide rod is prevented from being separated from the ball bearing, and the movement of the limit guide rod 16 is limited. Meanwhile, as the baffle 26 is vertically arranged on the upper end surface of the second fastening plate 91, the first chute is communicated with the clamping groove, and one end of the limiting rod is inserted into the inner cavity of the second sleeve and connected with the compression spring 31; when the limit guide rod 16 is subjected to great impact force to move, the limit guide rod can realize the limit function of the limit guide rod 16 under the action of the elastic force of the compression spring 31, and the limit guide rod 16 is prevented from abnormally sliding down to damage the bottom of the device. Therefore, when the limiting rigidity of the vibration reduction and isolation device is not changed, the vibration reduction and isolation device can be ensured to adapt to different working conditions, the reliability and the working efficiency are improved, and the technical effect of protecting the limiting guide rod 16 is realized.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention are within the scope of the present invention; wherein reference to "and/or" in this embodiment indicates and/or two cases, in other words, reference to a and/or B in the embodiments of the present invention indicates two cases of a and B, A or B, and describes three states in which a and B exist, such as a and/or B, and indicates: only A and not B; only B and not A; includes A and B.
Also, in embodiments of the present invention, when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and the like are used in the embodiments of the present invention for illustrative purposes only and are not intended to limit the present invention.
Referring to fig. 1, an embodiment of the present invention provides a protection device for limiting, which includes a first fastening plate 1, a limiting seat, a limiting guide rod 16, a ball bearing 15, an elastic supporting component, a baffle 26, a vibration isolation panel and an impedance mechanism. The following detailed description will be made on the first fastening plate 1, the limit seat, the limit guide rod 16, the ball bearing 15, the elastic support assembly, the baffle 26 and the vibration isolation panel, respectively:
for the first fastening plate 1 and the limit seat:
the first fastening plate is arranged right above the limiting seat, the first fastening plate and the top of the limiting seat are provided with limiting distances, and the side surface of the first fastening plate, which faces the limiting seat, is provided with a spherical groove.
Specifically, the first fastening plate 1 of the embodiment of the invention is arranged right above the limiting seat, the first fastening plate is used for being connected with the vibration reduction and isolation device, the top of the first fastening plate 1 and the top of the limiting seat are provided with limiting distances, and the power equipment provided with the vibration reduction and isolation device can shake towards the direction of the limiting seat under the sea wave or under the swing impact of a maneuvering state. The top of the first fastening plate and the top of the limiting seat are provided with limiting distances, and the movement of the limiting guide rod can be limited, so that the non-contact limiting wire guide is a non-contact limiting wire guide, the limiting rigidity of the vibration reduction and isolation device is basically not changed, the performance of the vibration reduction and isolation device is ensured, and the vibration reduction and isolation device can be adaptively adjusted to adapt to different working conditions, and is high in reliability and working efficiency. Of course, the first fastening plate 1 may also be connected to the vibration damping device by welding or by integral molding. Simultaneously, the cover plate 3 and the second fastening plate 9 can be arranged in parallel with the first fastening plate 1, and can also have a certain inclination angle with the first fastening plate 1 so as to adapt to the installation space requirement.
For the limit guide bar 16:
one end of the limiting guide rod is hemispherical, one end of the limiting guide rod can be passively matched with the spherical groove in a sliding mode, and the other end of the limiting guide rod penetrates through the ball bearing.
Specifically, referring to fig. 1, a spherical groove 18 is disposed on a side of a first fastening plate 1 facing a limit seat, one end of a limit guide rod 16 is hemispherical, one end of the limit guide rod 16 can be passively slidingly matched with the spherical groove 18, when a power device can shake in a direction of the limit seat, the first fastening plate can contact with one end of the limit guide rod, and one end of the limit guide rod can slide in the spherical groove. In the embodiment of the present invention, the other end of the limit guide bar 16 is connected to the limit seat through an elastic support assembly described below, so that the limit guide bar can be prevented from being separated from the ball bearing to limit the movement of the limit guide bar.
Meanwhile, the embodiment of the invention can further comprise a liquid guide column 13, wherein the liquid guide column 13 is coaxially arranged in the first sleeve 14, the other end of the limiting guide rod 16 coaxially penetrates through the liquid guide column 13, and the other end of the limiting guide rod 16 is fastened on the liquid guide column 13 through the nut 7.
For the ball bearing 15:
the ball bearing is arranged in the middle of the top of the limit seat.
Specifically, referring to fig. 1, in the embodiment of the present invention, the ball bearing 15 is disposed in the middle of the top of the limit seat, the other end of the limit guide rod 16 passes through the ball bearing 15, the other end of the limit guide rod 16 is connected to the limit seat through an elastic support component, and when one end of the limit guide rod slides in the spherical groove, the limit guide rod can freely rotate and axially slide in the ball bearing, so as to adapt to the shake of the power device provided with the vibration isolation device.
The protection device may further include a protection ring 2, where two axial ends of the protection ring 2 are respectively connected with the circumferential surface of the first fastening plate 1 and the circumferential surface of the cover plate 3, and the protection ring 2 is mainly used for preventing dust from entering into the ball bearing to play a role in protecting the ball bearing from being cleaned, and in addition, the protection ring 2 needs to have a certain elasticity to adapt to displacement change of the first fastening plate 1. In the embodiment of the invention, the ball groove 18 is arranged in the middle of the side surface of the first fastening plate 1 facing the limit seat, and two sides of the side surface can be provided with bolt holes, so that the connection with the vibration reduction and isolation device can be realized through bolts.
The limiting seat in the embodiment of the invention may include a cover plate 3, a first sleeve 14 and a second fastening plate 9, where two axial ends of the first sleeve 14 are opened, the cover plate 3 and the second fastening plate 9 are respectively disposed at two axial ends of the first sleeve 14 to form a sealing cavity, and the first fastening plate 1 and the cover plate 3 have a limiting distance. The axial both ends of first sleeve 14 can all be provided with a plurality of bolt holes, realize the connection of axial both ends and apron 3, the second fastening plate 9 of first sleeve 14 through connecting bolt 8, and because be through bolted connection, consequently, can make things convenient for the dismantlement of spacing seat, convenient maintenance. The middle part of apron 3 is provided with first through-hole 19, and the bottom inboard of first through-hole 19 is provided with installation turn-ups 20, and ball bearing 15 installs in first through-hole 19, and ball bearing 15 sets up on installation turn-ups 20 to realize the installation of ball bearing 15.
For the elastic support assembly:
the other end of the limit guide rod is connected with the limit seat through the elastic supporting component.
Specifically, referring to fig. 1, in the embodiment of the present invention, the elastic supporting assembly may include a first elastic supporting unit and a second elastic supporting unit, the first elastic supporting unit includes more than one first elastic member 5, two ends of the more than one first elastic member 5 are respectively connected to the bottom of the cover plate 3 and the top of the liquid guiding column 13, the second elastic supporting unit includes more than one second elastic member 21, and two ends of the more than one second elastic member 21 are respectively connected to the bottom of the liquid guiding column 13 and the top of the second fastening plate 9.
The elastic supporting component not only can prevent the movement of the limit guide rod 16, but also can swing along with the limit guide rod 16 and reset so as to further ensure the vibration reduction and isolation effect. In the embodiment of the present invention, the first elastic member 5 and the second elastic member 21 may be springs, which are disposed at equal angular intervals around the central axis of the liquid guiding column 13, so as to ensure balanced stress. The first elastic supporting unit may further include a first stopper 4, the first stopper 4 being provided in plurality, the plurality of first stoppers 4 being respectively provided on the bottom of the cover plate 3 and the top of the liquid guiding column 13 for connection with the first elastic member 5, so as to realize the installation of the first elastic member 5.
With continued reference to fig. 1, a mounting groove may be provided at the bottom of the cover plate 3 and the top end of the liquid guiding column 13 at the position where the first elastic member 5 is connected, and the first limiting block 4 is fixedly embedded in the mounting groove, so as to implement the mounting of the first limiting block 4. Of course, the first limiting block 4 may also be disposed at the bottom of the cover plate 3 and the top end of the liquid guiding column 13 by welding or integrally forming at the position where the first elastic member 5 is connected, which is not limited in the embodiment of the present invention. Correspondingly, in the embodiment of the invention, referring to fig. 1, the second elastic supporting unit may further include a plurality of second limiting blocks 22, where the plurality of second limiting blocks 22 are respectively disposed on the bottom end of the liquid guiding column 13 and the top of the second fastening plate 9 for connecting with the second elastic member 21, so as to implement the installation of the second elastic member 21. The bottom end of the liquid guiding column 13 and the top of the second fastening plate 9 may be provided with a mounting groove at the position where the second elastic member 21 is connected, and the second stopper 22 is fixedly embedded in the mounting groove, so as to realize the mounting of the second stopper 22.
Of course, the second limiting block 22 may also be disposed at the bottom end of the liquid guiding column 13 and the top of the second fastening plate 9 by welding or integrally forming, where the second elastic member 21 is connected, which is not limited in the embodiment of the present invention. Referring to fig. 1, in the embodiment of the present invention, a limiting hole 23 is provided in the middle of the top of the liquid guiding column 13, a limiting piece 24 is provided in the middle of the limiting guide rod 16, and the limiting piece 24 is embedded in the limiting hole 23, so that the limiting guide rod 16 can be limited to be separated from the liquid guiding column 13. The sealed cavity can be filled with magnetorheological fluid 10; the protection device may further comprise a displacement sensor 17 and an excitation coil 12, wherein the displacement sensor 17 is arranged on the side of the cover plate 3 facing the first fastening plate 1, the excitation coil 12 is fixedly arranged on the outer circumferential surface of the liquid guiding column 13, and a gap is arranged between the excitation coil 12 and the first sleeve 14.
In the embodiment of the invention, the displacement sensor 17 can identify the displacement change between the first fastening plate 1 and the cover plate 3, so as to regulate the current of the exciting coil 12, thereby generating different magnetization effects of the magnetorheological fluid 10 under different control currents, forming different high-strength shear yield stresses, namely different damping forces, realizing the self-adaptive regulation function of the damping forces, reducing the swing impact stress and realizing the limit protection function of the vibration reduction and isolation device under the swing impact.
With continued reference to fig. 1, a groove corresponding to the outer shape of the exciting coil 12 may be provided in the middle of the outer circumferential surface of the liquid guiding column 13, and the exciting coil 12 is embedded in the groove. The side wall of the first sleeve 14 may be provided with a through-hole extending radially through the first sleeve, in which a sealing plug 6 is arranged to prevent the magnetorheological fluid 10 from flowing out, while the sealing plug 6 is penetrated by a connecting wire which enters the sealing chamber and is connected to the excitation coil 12.
In the embodiment of the invention, the current of the exciting coil is regulated to be an external regulating device, and the magnitude of the exciting magnetic field is realized by taking a displacement signal acquired by the displacement sensor as input and outputting a certain current to the exciting coil, so that the magnetization effect of the magnetorheological fluid is controlled. The liquid guiding column 13 may be provided with more than one liquid guiding hole 25, the central axis of the more than one liquid guiding hole 25 being arranged parallel to the central axis of the liquid guiding column 13. Therefore, the flow area of the magnetorheological fluid can be increased, and meanwhile, the magnetorheological fluid is magnetized to form uniform damping force under the magnetic field generated by the exciting coil, and the force is balanced.
The protection device of the embodiment of the invention may further include two rubber rings 11, where the two rubber rings 11 are respectively disposed at two axial ends of the outer peripheral surface of the liquid guiding column 13, and the rubber rings 11 are mainly used to prevent the liquid guiding column 13 from hard collision with the first sleeve 14 when the ball bearing 15 is in an inclined state, so as to play a role in buffering protection. It should be noted that, the vibration reduction and isolation device shown in the embodiment of the invention is in the prior art, and is mainly used for adapting to the impact of power equipment so as to ensure the safety of the power equipment.
For the baffle 26:
baffle 26 sets up perpendicularly at the up end of second fastening plate, vertical first spout to the outer wall of baffle 26 has been seted up, horizontal draw-in groove has been seted up to the outer wall of baffle to first spout and draw-in groove intercommunication, the second sleeve is installed to the lateral wall of baffle, telescopic inner chamber fixed connection compression spring of second, the telescopic inner chamber grafting gag lever post of draw-in groove, the one end of gag lever post inserts the telescopic inner chamber of second and with compression spring connection, the gag lever post extends to the below of spacing guide bar, the outer wall fixed connection push rod of spacing guide bar, the push rod inserts the inner chamber of first spout and is connected with the movable block, the second spout has been seted up to the outer wall of gag lever post, installs the wedge with movable block sliding connection in the second spout.
Referring to fig. 2, a compression spring 31 is connected, a limiting rod 27 is inserted into the inner cavity of the clamping groove, one end of the limiting rod 27 is inserted into the inner cavity of the second sleeve 28 and is connected with the compression spring 31, the limiting rod 27 extends to the lower side of the limiting guide rod 16, the outer wall of the limiting guide rod 16 is fixedly connected with a push rod 29, the push rod 29 is inserted into the inner cavity of the first sliding groove and is connected with a movable block 30, a second sliding groove is formed in the outer wall of the limiting rod 27, and a wedge-shaped block which is slidably connected with the movable block 30 is installed in the second sliding groove.
With continued reference to fig. 2, the baffle 26 is vertically disposed on the upper end surface of the second fastening plate, that is, the baffle 26 may be located in the magnetorheological fluid, and a stop lever 27 is disposed above the second fastening plate 9. The first spout of vertical orientation has been seted up to the outer wall of baffle 26, transverse draw-in groove has been seted up to the outer wall of baffle 26, and first spout and draw-in groove intercommunication, second sleeve 28 is installed to the lateral wall of baffle 26, the inner chamber fixed connection compression spring 31 of second sleeve 28, the inner chamber grafting gag lever post 27 of draw-in groove, the one end of gag lever post 27 inserts the inner chamber of second sleeve 28 and is connected with compression spring 31, gag lever post 27 extends to the below of gag lever post 16 (i.e. the one end that gag lever post 27 is close to the second fastening plate), the outer wall fixed connection push rod 29 of gag lever post 16, push rod 29 inserts the inner chamber of first spout and is connected with movable block 30, the second spout has been seted up to the outer wall of gag lever post 27, install the wedge with movable block 30 sliding connection in the second spout.
The gag lever post 27 is cuboid member to gag lever post 27 and draw-in groove's inner wall laminating, one side that the baffle 26 kept away from second sleeve 28 is provided with stop collar 32, the outer wall of gag lever post 27 is equipped with stop collar 33, and stop collar 33 is located the inner chamber of stop collar 32, set up stop collar 32 and stop collar 33, can prevent that gag lever post 27 from popping out in sleeve 28, play the spacing effect to gag lever post 27, be equipped with the collar on the second sleeve 28, it has fastening bolt to alternate on the collar, second sleeve 28 passes through fastening bolt and installs on the baffle 26, movable block 30 is the wedge, and its surface bonding wear pad, second sleeve 28 adopts fastening bolt to be connected with baffle 26, make second sleeve 28 can convenient dismouting. Therefore, when the limit guide rod 16 is subjected to great impact force to move, the limit guide rod 27 can realize the limit function of the limit guide rod 16 under the action of the elastic force of the compression spring 31, and the limit guide rod 16 is prevented from abnormally sliding down to damage the bottom of the device. Meanwhile, an elastic base 34 can be further arranged right below the limit guide rod 16 and on the upper end face of the second fastening plate, the elastic base 34 can be a spring or an elastic plastic body, if the limit guide rod 16 contacts the elastic base 34, the mechanical energy of the limit guide rod 16 can be absorbed through the elastic deformation of the elastic base 34, and then the safety protection of the limit guide rod 16 is further improved, so that the technical effects of avoiding damaging the bottom of the device and improving the safety of the limit guide rod 16 are achieved.
For vibration isolation panels:
the vibration isolation panel comprises a carbon fiber bearing layer 35 and a vibration isolation interlayer 36, wherein the carbon fiber bearing layer 35 is connected with the vibration isolation interlayer 36, and the carbon fiber bearing layer 35 is connected with the second fastening plate; and the carbon fiber bearing layer 35 is formed by layering carbon fiber dry wires according to a layering sequence of 0 degree/+/-45 degrees/90 degrees, the carbon fiber bearing layer 35 positioned on the surface of the vibration isolation panel is designed with anti-skid marks, and the carbon fiber bearing layer 35 is positioned between the second fastening plate and the vibration isolation interlayer 36.
Specifically, referring to fig. 3, the vibration isolation panel may be positioned under the second fastening plate, and the vibration isolation panel may serve to connect the second fastening plate to the hull such that the second fastening plate is fixed to the hull through the vibration isolation panel. The carbon fiber bearing layer 35 is obtained by spreading carbon fiber dry wires, flowing into epoxy resin, heating, pressurizing and solidifying; the vibration isolation interlayer 36 is milled out of a Polymethacrylimide (PMI) foam board by a milling machine according to the size requirement for standby. The anti-skid printing designed by the carbon fiber bearing layer 35 on the surface of the vibration isolation panel has the technical effect of preventing the second fastening plate from sliding on the vibration isolation panel.
In order to better install and use the vibration isolation panel in practical application, the following details are given on the installation and manufacturing modes of the vibration isolation panel:
firstly, preparing a PMI foam board milled by a carbon fiber dry wire, epoxy resin and a milling machine;
secondly, carrying out layering and paving on the carbon fiber dry filaments according to the layering sequence of 0 degree/+/-45 degrees/90 degrees on a prefabricated die, and embedding a milled PMI into the dry filaments in the layering process.
Thirdly, closing the mould, heating, injecting resin into a resin inflow port of the mould, controlling the temperature and the pressure, heating to 80 ℃, preserving heat for 4 hours, and preserving heat for 3 hours at 125 ℃ for curing;
fourth, cooling to normal temperature after the solidification reaction is completed, and demoulding to complete the floor manufacturing.
The manufactured vibration isolation panel for the ship has the advantages that the quality is reduced by 65% compared with the existing similar vibration isolation panel under the condition that the same strength is maintained, the sound insulation effect is increased by 8dB compared with the existing similar steel vibration isolation panel, and the sound insulation effect is improved by 15dB compared with the aluminum vibration isolation panel. Thereby, the vibration reduction and isolation effect of the vibration reduction and isolation device is improved, and the technical effect of effectively blocking vibration from being transmitted to the ship is achieved.
For the impedance mechanism:
the impedance mechanism comprises a base structure main body composed of a fixed web 42 and a common installation panel 40 which are vertically connected, and fixed support toggle plates 41 which are uniformly arranged between the fixed web 42 and the common installation panel, wherein a direction-one channel 44 is respectively arranged on the fixed web 42 between two adjacent fixed support toggle plates 41 and the common installation panel 40 of the equipment, adjustable toggle plates 39 are arranged in the two mutually perpendicular channels 44, the outer end surface of the fixed web 42 is provided with a detachable movable web 38, and the common installation panel 40 of the equipment is provided with a detachable movable panel 37; and the movable panel 37 is fixedly connected with the second fastening plate.
Referring to fig. 4, the outer end surface of the fixed web 42 provided with the detachable movable web 38 may refer to: mounting holes 45 are provided in the fixed web 42 and the movable web 38, respectively, and are connected by bolts 43. The provision of the adjustable toggle plate 39 in two mutually perpendicular channels 44 may be referred to as: two mutually perpendicular channels 44 are respectively provided with a row of mounting holes, and the adjustable toggle plate is connected with the two mutually perpendicular channels 44 through bolts 43 and any corresponding mounting holes.
The impedance mechanism can be composed of a common installation panel 40, a fixed web 42 and a fixed support toggle plate 41 of the equipment to form a base structure main body, and the movable panel, the movable web 38 and the adjustable toggle plate 39 are connected through bolts 43 to form an impedance variable base structure with the base structure main body. A channel 44 for mounting the adjustable toggle plate 39 is provided between two adjacent fixed toggle plates 41, the channel 44 is provided in a central position of the panel and the web (between two adjacent fixed toggle plates), and a mounting hole for fixing the adjustable toggle plate 39 is provided in the channel 44. Corresponding positions of the equipment common mounting panel 40 and the movable panel 37 are provided with mounting holes for equipment mounting and connection therebetween. And the corresponding positions of the web and the movable web 38 are provided with mounting holes for connection therebetween. The adjustable toggle plate 39 is fixedly connected to the equipment common mounting panel 40 and the web by means of internal angle bolts 43. The movable panel 37 and the movable web 38 are fixedly connected with the equipment common mounting panel 40 and the web by means of internal angle bolts 43. Therefore, the device has the advantages of simple structure, convenient installation, flexible impedance adjustment, wide application range and the like, can flexibly and effectively damp the vibration transferred by the device while bearing the dynamic and static load of the device and the interaction load between the transfer structure and the device, improves the sound stealth performance of the ship, and has the technical effects of good economy and wide application prospect. In addition, the movable panel 37 and the second fastening plate can be fixedly connected, so that the second fastening plate and the common mounting panel can be detachably connected; alternatively, the vibration isolation panel is placed between the movable panel 37 and the second fastening plate, that is, the carbon fiber bearing layer 35 in the vibration isolation panel is connected to the second fastening plate, and the vibration isolation interlayer 36 in the vibration isolation panel is connected to the movable panel 37, thereby attenuating the vibration transmitted to the movable panel 37.
In order to meet the requirements of the resistance environment of the actual ship of the typical electromechanical equipment, the requirements can be realized by changing the thickness of the base panel, the thickness of the web plate, the spacing between the toggle plates and the like. The marine impedance variable base structure can realize the impedance change by one, two or three modes, and the specific implementation modes are as follows:
in the first embodiment, the panel thickness is changed; the apparatus common mounting panel 40 and the movable panel 37 are connected by bolts 43 through mounting holes, wherein the plate thickness of the movable panel 371 can be adjusted according to the model and size of the mounting apparatus. The base structure after the movable panel 37 is installed is shown in fig. 4.
In a second embodiment, the web thickness is varied; the movable web 38 and the web are bolted 43 through the mounting holes, wherein the plate thickness of the movable web 38 can be adjusted according to the type and size of the mounting apparatus. The base structure is shown in fig. 4 after the movable web 38 is installed.
A third embodiment, varying the toggle plate spacing; the adjustable toggle plate 39 is mounted in a channel 44 between two adjacent fixed toggle plates and the adjustable toggle plate 39 is bolted 43 to the common mounting panel and web through mounting holes.
In the above three embodiments, the apparatus common mounting panel 40, the web plate and the fixed support toggle plate 41 form the base structure main body, and the movable panel 37, the movable web plate 38 and the adjustable toggle plate 39 are connected by the bolts 43 to form the impedance variable base structure with the base structure main body. A channel 44 for mounting the adjustable toggle plate 39 is provided between two adjacent fixed toggle plates, the channel 44 is provided in a central position of the panel and the web (between two adjacent fixed toggle plates), and a mounting hole for fixing the adjustable toggle plate 39 is provided in the channel 44. Corresponding positions of the equipment common mounting panel 40 and the movable panel 37 are provided with mounting holes for equipment mounting and connection therebetween. And the corresponding positions of the web and the movable web 38 are provided with mounting holes for connection therebetween. The movable panel 37 and the movable web 38 are fixedly connected with the common mounting panel 40 and the web of the equipment by means of inner angle bolts 43. Therefore, the device has the advantages of simple structure, convenient installation, flexible impedance adjustment and wide application range, and can limit and damp the vibration transmitted by the device while bearing the dynamic and static load of the device and the interaction load between the transmission structure and the device, thereby having good economical efficiency and wide application prospect.
The invention provides a protection device for limiting, wherein a first fastening plate 1 is used for being connected with a vibration reduction and isolation device, and as the top of the first fastening plate 1 and the top of a limiting seat are provided with a limiting distance, a power device provided with the vibration reduction and isolation device can shake towards the direction of the limiting seat under the swing impact of sea waves or in a maneuvering state; because the side surface of the first fastening plate 1, which faces the limit seat, is provided with the spherical groove, and one end of the limit guide rod 16 is hemispherical, one end of the limit guide rod 16 can be passively matched with the spherical groove in a sliding manner, when the power equipment can shake towards the direction of the limit seat, the first fastening plate 1 can be contacted with one end of the limit guide rod 16, and one end of the limit guide rod 16 can slide in the spherical groove; because the ball bearing is arranged in the middle of the top of the limit seat, the other end of the limit guide rod 16 passes through the ball bearing, and the limit guide rod can freely rotate and axially slide in the ball bearing so as to adapt to the shaking of the power equipment provided with the vibration reduction and isolation device; because the other end of the limit guide rod 16 is connected with the limit seat through the elastic supporting component, the limit guide rod is prevented from being separated from the ball bearing, and the movement of the limit guide rod 16 is limited. Meanwhile, as the baffle 26 is vertically arranged on the upper end surface of the second fastening plate 91, the first chute is communicated with the clamping groove, and one end of the limiting rod is inserted into the inner cavity of the second sleeve and connected with the compression spring 31; when the limiting rod 16 is subjected to great impact force to move, the limiting rod can realize the limiting action on the limiting guide rod 16 under the action of the elastic force of the compression spring 31, and the limiting guide rod 16 is prevented from abnormally sliding down to damage the bottom of the device. Therefore, when the limiting rigidity of the vibration reduction and isolation device is not changed, the vibration reduction and isolation device can be ensured to adapt to different working conditions, the reliability and the working efficiency are improved, and the technical effect of protecting the limiting guide rod 16 is realized.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (8)
1. A protective device for limiting, the device comprising:
a limit seat;
the first fastening plate is arranged right above the limiting seat, the first fastening plate and the top of the limiting seat are provided with limiting distances, and the side surface of the first fastening plate, which faces the limiting seat, is provided with a spherical groove;
the ball bearing is arranged in the middle of the top of the limit seat;
one end of the limiting guide rod is hemispherical, one end of the limiting guide rod can be passively matched with the spherical groove in a sliding mode, and the other end of the limiting guide rod penetrates through the ball bearing;
the other end of the limit guide rod is connected with the limit seat through the elastic support component;
the cover plate and the first fastening plate have the limiting distance;
a first sleeve, the two axial ends of which are open;
the second fastening plate and the cover plate are respectively arranged at two axial ends of the first sleeve to form a sealing cavity; the cover plate and the second fastening plate are arranged in parallel with the first fastening plate;
the baffle is vertically arranged on the upper end face of the second fastening plate, a first vertical chute is formed in the outer wall of the baffle, a transverse clamping groove is formed in the outer wall of the baffle, the first chute is communicated with the clamping groove, a second sleeve is arranged on the side wall of the baffle, a compression spring is fixedly connected to the inner cavity of the second sleeve, a limiting rod is inserted into the inner cavity of the clamping groove and connected with the compression spring, one end of the limiting rod extends to the lower side of the limiting guide rod, a push rod is fixedly connected to the outer wall of the limiting guide rod, the push rod is inserted into the inner cavity of the first chute and connected with the movable block, a second chute is formed in the outer wall of the limiting rod, and a wedge-shaped block which is in sliding connection with the movable block is arranged in the second chute; the baffle is far away from one side of the second sleeve, a limiting sleeve is arranged on the outer wall of the limiting rod, a limiting ring is arranged on the outer wall of the limiting rod, and the limiting ring is located in an inner cavity of the limiting sleeve.
2. The device according to claim 1, characterized in that the cover plate is provided with a first through hole in the middle, a mounting flange is provided on the inner bottom side of the first through hole, the ball bearing is mounted in the first through hole, and the ball bearing is provided on the mounting flange.
3. The device of claim 1, wherein the protective device further comprises a liquid guiding column coaxially arranged in the first sleeve, the other end of the limit guide rod coaxially penetrates through the liquid guiding column, and the other end of the limit guide rod is fastened on the liquid guiding column through a nut;
the elastic support assembly comprises a first elastic support unit and a second elastic support unit, the first elastic support unit comprises more than one first elastic piece, two ends of the more than one first elastic piece are respectively connected with the bottom of the cover plate and the top of the liquid guide column, the second elastic support unit comprises more than one second elastic piece, and two ends of the more than one second elastic piece are respectively connected with the bottom of the liquid guide column and the top of the second fastening plate.
4. The apparatus of claim 3, wherein the first elastic supporting unit further comprises a first stopper provided in plurality, the first stoppers being respectively provided on a bottom of the cover plate and a top of the liquid guiding column for connection with the first elastic member;
the second elastic supporting unit further comprises a plurality of second fastening plates, and the second fastening plates are respectively arranged at the bottom ends of the liquid guide columns and the tops of the second fastening plates and connected with the second elastic pieces.
5. A device according to claim 3, wherein a limiting hole is provided in the middle of the top of the liquid guiding column, a limiting piece is provided in the middle of the limiting guide rod, and the limiting piece is embedded in the limiting hole.
6. A device according to claim 3, wherein the sealed cavity is filled with magnetorheological fluid;
the protection device further comprises a displacement sensor and an excitation coil, wherein the displacement sensor is arranged on one side, facing the first fastening plate, of the cover plate, the excitation coil is fixedly arranged on the outer peripheral surface of the liquid guide column, and a gap is formed between the excitation coil and the first sleeve.
7. The device according to claim 6, wherein the liquid guiding column is provided with more than one liquid guiding hole, and the central axis of more than one liquid guiding hole is parallel to the central axis of the liquid guiding column.
8. A device according to claim 3, wherein the guard further comprises two rubber rings disposed on axial ends of the outer peripheral surface of the liquid guiding column, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714462.8A CN108622363B (en) | 2018-06-29 | 2018-06-29 | Protective device for limiting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714462.8A CN108622363B (en) | 2018-06-29 | 2018-06-29 | Protective device for limiting |
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| CN108622363B true CN108622363B (en) | 2023-12-26 |
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| CN110341925B (en) * | 2019-07-17 | 2021-03-30 | 浙江海洋大学 | Vibration damper applied to ship |
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