CN111091994A - Movable end assembly of switch device and switch device - Google Patents
Movable end assembly of switch device and switch device Download PDFInfo
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- CN111091994A CN111091994A CN201911097051.XA CN201911097051A CN111091994A CN 111091994 A CN111091994 A CN 111091994A CN 201911097051 A CN201911097051 A CN 201911097051A CN 111091994 A CN111091994 A CN 111091994A
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- lower conductive
- conductive tube
- support
- sleeve
- pull rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention belongs to the field of switch devices, and particularly relates to a switch device moving end assembly and a switch device. The elastic buffer device is arranged, the movement difficulty of the lower conductive tube is improved at the tail end of the movement stroke of the lower conductive tube, the impulse of the moving end assembly is reduced, and overshooting caused by switching-off or switching-on is avoided.
Description
Technical Field
The invention belongs to the field of switch devices, and particularly relates to a movable end assembly of a switch device and the switch device.
Background
The isolating/grounding switch comprises a static contact, a movable end component and a movable contact arranged at the top of the movable end component, wherein the movable end component comprises a base and two sections of foldable conductive arms arranged on the base, the conductive arms are hinged on the base through a lower conductive tube and a pull rod positioned in the lower conductive tube, and the hinged point of the lower conductive tube and the pull rod on the base is different. The lower conductive tube is in transmission connection with the driving device, and pitching motion can be performed between a vertical position and a horizontal position around a hinge point under the driving of the driving device so as to realize the pitching motion of the conductive arm.
In the process of the pitching motion of the conductive arm, due to different hinge points, the pull rod can move relative to the lower conductive tube, the upper conductive tube is driven by the gear rack mechanism to fold or unfold relative to the lower conductive tube at the tail end of the motion stroke of the conductive arm, when the conductive arm moves to a switching-on position, the upper conductive tube unfolds relative to the lower conductive tube, the movable contact and the fixed contact are in contact with each other to be matched with the conductive switch-on, and the isolating/grounding switch is in a switching-on state; when the conducting arm moves to the opening position, the upper conducting tube is folded and stored relative to the lower conducting tube, the movable contact and the static contact are separated, and the isolating/grounding switch is in a closing state.
Generally, in order to balance the change of gravitational potential energy in the switching-on and switching-off processes of the isolating/grounding switch, a balance spring is arranged between a lower conductive tube and an inner pull rod of a moving end assembly, but the balance spring only can play a role of balancing the gravitational potential energy in the process that a conductive arm moves between a vertical position and a horizontal position, when the switching-on and switching-off are close to the end, a larger impulse is generated due to the fact that the conductive arm stops moving, the switching-on and switching-off are easy to cause, and when the situation is serious, the transmission structure of the isolating/grounding switch can be damaged, and accidents are caused.
Disclosure of Invention
The invention aims to provide a switch device moving end assembly, which aims to solve the technical problem that the switch device moving end assembly is easy to swing and over-position due to overlarge impulse when swinging to the stroke tail end in the prior art; the invention also aims to provide a switch device to solve the technical problem that accidents are easily caused by the fact that a moving end component is easy to swing and over-position at the tail end of a stroke in the switching state process of the switch device in the prior art.
In order to achieve the purpose, the movable end assembly of the switch device adopts the following technical scheme:
a movable end assembly of a switch device comprises a base, a lower conductive tube and a pull rod, wherein an elastic buffer device is arranged between the pull rod and the lower conductive tube, and the elastic buffer device is compressed only at the tail end of the movement stroke of the lower conductive tube so as to provide resistance to the relative movement between the pull rod and the lower conductive tube.
The invention has the beneficial effects that: an elastic buffer device is arranged between the pull rod and the lower conductive tube, and the elastic buffer device is compressed at the tail end of the motion stroke of the lower conductive tube, so that the pull rod and the lower conductive tube which move relatively can compress the elastic buffer device before the lower conductive tube moves to an opening position or a closing position, the compressed elastic buffer device can provide resistance for the relative motion of the pull rod and the lower conductive tube in turn, the pull rod can apply resistance to the lower conductive tube through the elastic buffer device, the motion difficulty of the lower conductive tube is improved at the tail end of the motion stroke of the lower conductive tube, the impulse of a moving end assembly is reduced, the phenomenon that the lower conductive tube overshoots to cause over-opening or over-closing during opening or closing is avoided, in addition, the elastic buffer device is only compressed at the tail end of the motion stroke of the lower conductive tube, and therefore, the arrangement of the elastic buffer device can not influence the motion process of the lower conductive tube between the closing position and the opening position, the movable end assembly can be ensured to be capable of normally switching between a closing state and an opening state.
Further, the device also comprises a support arranged on the pull rod and/or the lower conductive tube, and the support is used for being matched with the elastic buffer device in a stop mode so as to compress the elastic buffer device.
The beneficial effects are that: the support is arranged in the lower conductive tube to be matched with the elastic buffering device, and the size of the elastic buffering device can be flexibly adjusted according to the installation position of the support.
Further, the position of the support along the axial direction of the pull rod is adjustable; or the support comprises a support sleeve and an adjusting sleeve, the support is fixed at the installation position through the support sleeve, the support is in stop fit with the elastic buffer device through the adjusting sleeve, and the axial position of the adjusting sleeve is adjustably installed in the support sleeve.
The beneficial effects are that: the position of the support along the axial direction of the pull rod is adjustable or the position of the support sleeve of the support along the axial direction of the pull rod is adjustable, the position of the support sleeve of the support or the support can be adjusted according to actual conditions, the compression amount of the elastic buffer device is changed, and the resistance provided when the elastic buffer device is compressed is further changed.
Furthermore, an operation window corresponding to the adjusting sleeve is arranged on the lower conductive tube.
The beneficial effects are that: the window corresponding to the adjusting sleeve is arranged on the lower conductive tube, so that the supporting sleeve in an installation state can be adjusted, and the position of the adjusting sleeve can be adjusted more conveniently.
Further, the adjusting sleeve comprises a threaded section in threaded fit with the supporting sleeve, and the adjusting sleeve is installed in the supporting sleeve through the threaded section.
The beneficial effects are that: the adjusting sleeve is installed in the supporting sleeve in a threaded mode, and the position of the adjusting sleeve can be adjusted in a stepless mode by rotating the adjusting sleeve.
Furthermore, a tool matching part used for being matched with an adjusting tool to apply force to the adjusting sleeve to rotate is arranged on the outer peripheral surface of the adjusting sleeve, and an operation window corresponding to the adjusting sleeve is arranged on the lower conductive tube.
The beneficial effects are that: the adjusting sleeve is provided with a tool matching part, the installation position of the adjusting sleeve can be conveniently adjusted by applying force to the adjusting sleeve through a tool, in addition, an operation window is arranged on the conductive tube, the adjusting sleeve at the installation position can be adjusted, and the position of the adjusting sleeve is not required to be adjusted by detaching the closing spring support and the opening spring support.
Further, one end of the threaded section is provided with a flange, and the tool matching part is a tool matching hole which is formed in the flange and used for inserting an adjusting tool.
The beneficial effects are that: the adjusting holes are arranged on the flanges, so that the depth of the adjusting holes is enough, and the tool is prevented from being separated from the adjusting holes.
Furthermore, the support and the lower conductive tube are correspondingly provided with screw mounting holes, and the support is fixed in the lower conductive tube by penetrating screws in the screw mounting holes.
The beneficial effects are that: the support is fixed in the lower conductive tube by penetrating and installing screws in corresponding screw installation holes on the support and the lower conductive tube, so that the support is convenient to disassemble and assemble, and meanwhile, the installation position of the support can be determined through the screws.
Furthermore, the elastic buffer device comprises a closing buffer spring and an opening buffer spring which are arranged in parallel along the axial direction of the pull rod, one of the closing buffer spring and the opening buffer spring is compressed when the lower conductive tube moves to the horizontal position, the other one of the closing buffer spring and the opening buffer spring is compressed when the lower conductive tube moves to the vertical position, and the length of the buffer spring compressed when the lower conductive tube moves to the horizontal position is larger than that of the spring compressed when the lower conductive tube moves to the horizontal position.
The beneficial effects are that: in the process that the lower conductive tube moves from the vertical position to the horizontal position, the self gravity and the driving force of the lower conductive tube apply force to the lower conductive tube together, the impulse is large when the lower conductive tube reaches the horizontal position, and the buffer spring compressed at the corresponding position is relatively longer, so that larger resistance can be provided, and a better buffer effect is achieved; the in-process of lower contact tube by horizontal position motion to vertical position, lower contact tube self gravity is the resistance, and the impulse is less relatively when lower contact tube reachs horizontal position, and the buffer spring that will correspond the position compressed sets up shorter relatively, under the prerequisite that satisfies the buffering requirement, avoids buffer spring to cause too big hindrance to the normal motion of lower contact tube.
In order to solve the technical problem, the switching device adopts the following technical scheme:
the utility model provides a switching device, includes and moves the end subassembly, moving contact and static contact, the moving contact is installed at the tip that moves the end subassembly, includes base, lower contact tube, pull rod, is provided with elastic buffer device between pull rod and lower contact tube, and elastic buffer device is only compressed at the end of lower contact tube motion stroke to relative motion between pull rod and the lower contact tube provides the resistance.
The invention has the beneficial effects that: an elastic buffer device is arranged between the pull rod and the lower conductive tube, and the elastic buffer device is compressed at the tail end of the motion stroke of the lower conductive tube, so that the pull rod and the lower conductive tube which move relatively can compress the elastic buffer device before the lower conductive tube moves to an opening position or a closing position, the compressed elastic buffer device can provide resistance for the relative motion of the pull rod and the lower conductive tube in turn, the pull rod can apply resistance to the lower conductive tube through the elastic buffer device, the motion difficulty of the lower conductive tube is improved at the tail end of the motion stroke of the lower conductive tube, the impulse of a moving end assembly is reduced, the phenomenon that the lower conductive tube overshoots to cause over-opening or over-closing during opening or closing is avoided, in addition, the elastic buffer device is only compressed at the tail end of the motion stroke of the lower conductive tube, and therefore, the arrangement of the elastic buffer device can not influence the motion process of the lower conductive tube between the closing position and the opening position, the switching between the closing state and the opening state of the movable end assembly can be normally carried out, and the switching device is prevented from breaking down due to the opening or closing.
Further, the device also comprises a support arranged on the pull rod and/or the lower conductive tube, and the support is used for being matched with the elastic buffer device in a stop mode so as to compress the elastic buffer device.
The beneficial effects are that: the support is arranged in the lower conductive tube to be matched with the elastic buffering device, and the size of the elastic buffering device can be flexibly adjusted according to the installation position of the support.
Further, the position of the support along the axial direction of the pull rod is adjustable; or the support comprises a support sleeve and an adjusting sleeve, the support is fixed at the installation position through the support sleeve, the support is in stop fit with the elastic buffer device through the adjusting sleeve, and the axial position of the adjusting sleeve is adjustably installed in the support sleeve.
The beneficial effects are that: the position of the support along the axial direction of the pull rod is adjustable or the position of the support sleeve of the support along the axial direction of the pull rod is adjustable, the position of the support sleeve of the support or the support can be adjusted according to actual conditions, the compression amount of the elastic buffer device is changed, and the resistance provided when the elastic buffer device is compressed is further changed.
Furthermore, an operation window corresponding to the adjusting sleeve is arranged on the lower conductive tube.
The beneficial effects are that: the window corresponding to the adjusting sleeve is arranged on the lower conductive tube, so that the supporting sleeve in an installation state can be adjusted, and the position of the adjusting sleeve can be adjusted more conveniently.
Further, the adjusting sleeve comprises a threaded section in threaded fit with the supporting sleeve, and the adjusting sleeve is installed in the supporting sleeve through the threaded section.
The beneficial effects are that: the adjusting sleeve is installed in the supporting sleeve in a threaded mode, and the position of the adjusting sleeve can be adjusted in a stepless mode by rotating the adjusting sleeve.
Furthermore, a tool matching part used for being matched with an adjusting tool to apply force to the adjusting sleeve to rotate is arranged on the outer peripheral surface of the adjusting sleeve, and an operation window corresponding to the adjusting sleeve is arranged on the lower conductive tube.
The beneficial effects are that: the adjusting sleeve is provided with a tool matching part, the installation position of the adjusting sleeve can be conveniently adjusted by applying force to the adjusting sleeve through a tool, in addition, an operation window is arranged on the conductive tube, the adjusting sleeve at the installation position can be adjusted, and the position of the adjusting sleeve is not required to be adjusted by detaching the closing spring support and the opening spring support.
Further, one end of the threaded section is provided with a flange, and the tool matching part is a tool matching hole which is formed in the flange and used for inserting an adjusting tool.
The beneficial effects are that: the adjusting holes are arranged on the flanges, so that the depth of the adjusting holes is enough, and the tool is prevented from being separated from the adjusting holes.
Furthermore, the support and the lower conductive tube are correspondingly provided with screw mounting holes, and the support is fixed in the lower conductive tube by penetrating screws in the screw mounting holes.
The beneficial effects are that: the support is fixed in the lower conductive tube by penetrating and installing screws in corresponding screw installation holes on the support and the lower conductive tube, so that the support is convenient to disassemble and assemble, and meanwhile, the installation position of the support can be determined through the screws.
Furthermore, the elastic buffer device comprises a closing buffer spring and an opening buffer spring which are arranged in parallel along the axial direction of the pull rod, one of the closing buffer spring and the opening buffer spring is compressed when the lower conductive tube moves to the horizontal position, the other one of the closing buffer spring and the opening buffer spring is compressed when the lower conductive tube moves to the vertical position, and the length of the buffer spring compressed when the lower conductive tube moves to the horizontal position is larger than that of the spring compressed when the lower conductive tube moves to the horizontal position.
The beneficial effects are that: in the process that the lower conductive tube moves from the vertical position to the horizontal position, the self gravity and the driving force of the lower conductive tube apply force to the lower conductive tube together, the impulse is large when the lower conductive tube reaches the horizontal position, and the buffer spring compressed at the corresponding position is relatively longer, so that larger resistance can be provided, and a better buffer effect is achieved; the in-process of lower contact tube by horizontal position motion to vertical position, lower contact tube self gravity is the resistance, and the impulse is less relatively when lower contact tube reachs horizontal position, and the buffer spring that will correspond the position compressed sets up shorter relatively, under the prerequisite that satisfies the buffering requirement, avoids buffer spring to cause too big hindrance to the normal motion of lower contact tube.
Drawings
FIG. 1 is a schematic structural view of a switchgear of embodiment 1 of the present invention;
fig. 2 is a schematic view of a moving terminal assembly of an embodiment 1 of the switching device in the present invention in a switching-on position;
fig. 3 is a schematic view of a movable terminal assembly of an embodiment 1 of the switching device in the present invention in a brake-off position;
FIG. 4 is a schematic structural view of a support sleeve of embodiment 1 of the present invention;
FIG. 5 is a schematic structural view of an embodiment 1 of an adjusting sleeve according to the present invention;
FIG. 6 is a schematic view of the position of the operating window on the lower conductive tube according to the present invention;
FIG. 7 is a schematic structural view of a switch device of the present invention, which is a horizontal telescopic grounding switch;
in the figure: 1-a base; 2-a lower conductive tube; 3-a pull rod; 4-rotating the base; 5-a first hinge point; 6-a connecting rod assembly; 7-a second hinge point; 8-closing buffer spring; 9-opening buffer spring; 10-a pull rod spring support; 11-a closing spring support; 12-a brake-separating spring support; 13-a support sleeve; 14-adjusting sleeve; 15-screw mounting holes; 16-a threaded segment; 17-a flange; 18-a conditioning aperture; 19-a blocking sleeve; 20-an operating window; 21-upper conductive tube; 22-a stationary contact; 23-moving contact.
Detailed Description
The switch device comprises a static contact, a movable end component and a movable contact arranged at the end part of the movable end component, and when the switch device works, the static contact and the movable contact can be in contact conduction or separated disconnection through the action of the movable end component. The switching device may in particular be a disconnector or an earthing switch.
Specifically, as shown in fig. 2, the lower conductive tube 2 is hinged to the base 1 through a rotating seat 4, the hinge point is a first hinge point 5, and the upper end of the lower conductive tube 2 is connected to the upper conductive tube to form a conductive arm. The pull rod 3 is arranged in the lower conductive tube 2 in a penetrating mode, the lower end of the pull rod is hinged to the base 1 through the connecting rod assembly 6, the hinged point is a second hinged point 7, and the movement track of the hinged point of the connecting rod assembly 6 and the pull rod 3 around the second hinged point 7 is shown in a dotted line in fig. 2 and 3. During action, the rotating seat 4 drives the lower conductive tube 2 to rotate around the first hinge point 5 under the action of external force, and the first hinge point 5 and the second hinge point 7 are not overlapped, so that the pull rod 3 and the lower conductive tube 2 move relatively in the movement process of the lower conductive tube 2.
Specifically, the ends of the movement stroke of the lower conductive tube 2 are respectively in a vertical position and a horizontal position. In the process that the lower conductive tube 2 moves from a horizontal position to a vertical position in an anticlockwise direction, the pull rod 3 moves towards the direction of the base 1 relative to the lower conductive tube 2, after the lower conductive tube 2 moves to the vertical position shown in the figure 2, the conductive arm is unfolded, the movable contact and the fixed contact are in conductive contact, and the grounding switch is in a closing state; the lower conductive tube 2 is by the clockwise in-process to horizontal position motion of vertical position, and pull rod 3 moves for lower conductive tube 2 dorsad base 1 place direction, and after lower conductive tube 2 moved to the horizontal position as shown in fig. 3, the conducting arm was folded and was accomodate, and the sound contact separation, earthing switch are in the state of separating brake, realize the switching of earthing switch divide-shut brake state from this.
In order to avoid excessive impulse when the conductive arm swings to the stroke end to cause over-opening and over-closing, the movable end assembly further comprises an elastic buffer device arranged between the pull rod 3 and the lower conductive tube 2, and the elastic buffer device is compressed only at the end of the movement stroke of the lower conductive tube 2 to provide resistance to the relative movement between the pull rod 3 and the lower conductive tube 2 and reduce the impulse when the conductive arm reaches the closing position and the opening position.
Specifically, in the present embodiment, as shown in fig. 2, the elastic buffer device includes a closing buffer spring 8 and an opening buffer spring 9 sleeved on the pull rod 3, and correspondingly, the pull rod 3 and the lower conductive tube 2 are provided with corresponding supports, the supports are specifically a pull rod spring support 10 provided on the pull rod 3, and a closing spring support 11 and an opening spring support 12 provided in the lower conductive tube 2 at intervals along the axial direction of the lower conductive tube 2, the closing buffer spring 8 is provided between the closing spring support 11 and the pull rod spring support 10, and the opening buffer spring 9 is provided between the opening spring support 12 and the pull rod spring support 10.
In order to avoid the influence of the buffer spring on the normal movement of the lower conductive tube 2 between the switching-on and switching-off positions, the maximum distance between the closing spring support 11 and the pull rod spring support 10 is greater than the length of the closing buffer spring 8 in a natural state, so that the closing buffer spring 8 is compressed only when the lower conductive tube 2 moves to a position close to the vertical position. Specifically, when the lower conductive tube 2 moves from a horizontal position to a vertical position, the pull rod 3 moves towards the direction of the base 1 relative to the lower conductive tube 2, the distance between the closing spring support 11 and the pull rod spring support 10 is gradually reduced, when the lower conductive tube 2 moves to a position close to the vertical position, the closing buffer spring 8 is compressed by the closing spring support 11 and the pull rod spring support 10, the difficulty of the relative movement between the pull rod 3 and the lower conductive tube 2 is increased, the movement of the conductive arm is buffered, the impulse when the conductive arm reaches the closing position is reduced, and the over-closing is avoided.
Likewise, the maximum distance between the opening spring support 12 and the pull rod spring support 10 is greater than the natural length of the opening buffer spring 9, so that the opening buffer spring 9 is compressed only when the lower contact tube 2 moves to a nearly horizontal position. Specifically, when the lower conductive tube 2 moves from a vertical position to a horizontal position, the pull rod 3 moves relative to the direction of the base 1 opposite to the lower conductive tube 2, the distance between the opening spring support 12 and the pull rod spring support 10 is gradually reduced, when the lower conductive tube 2 moves to a position close to the horizontal position, the closing buffer spring 8 is compressed by the opening spring support 12 and the pull rod spring support 10, the difficulty of the relative movement between the pull rod 3 and the lower conductive tube 2 is increased, the movement of the conductive arm is buffered, the impulse when the conductive arm reaches the opening position is reduced, and the opening is avoided.
For the sizes of the closing buffer spring 11 and the opening buffer spring 12, in the embodiment, because the horizontal position is the opening position, and the external force for driving the rotating seat 4 to rotate and the gravity of the conductive arm act together in the process that the lower conductive tube 2 moves from the vertical position to the horizontal position, the impulse is larger when the conductive arm moves to the opening position, and therefore, the opening buffer spring 9 is longer in length so as to provide larger buffer force when the conductive arm moves to the opening position; because the vertical position is the switching-on position, under the action of the self gravity of the conductive arm, the impulse is relatively small when the conductive arm moves to the vertical position, so that the length of the switching-on buffer spring 8 is short, and the influence on the normal switching-on of the corresponding grounding switch caused by overlarge buffer force provided when the switching-on buffer spring 8 is compressed is avoided.
In other embodiments, the lengths of the closing buffer spring and the opening buffer spring may be set to be the same, and correspondingly, the opening buffer spring may be a spring with a relatively large elastic modulus, and the closing buffer spring may be a spring with a relatively small elastic modulus, or the minimum distance between the closing spring support and the pull rod spring support may be relatively small, and the minimum distance between the closing spring support and the pull rod spring support may be relatively large, so as to ensure that the closing buffer spring and the opening buffer spring can provide a suitable buffering force.
As to the specific structure of the closing spring support 11 and the opening spring support 12, in this embodiment, the closing spring support 11 and the opening spring support 12 respectively include a support sleeve 13 and an adjustment sleeve 14, the support sleeve 13 is used for being fixed in the lower conductive tube 2 to fix the closing spring support 11 and the opening spring support 12 in the lower conductive tube 2, the adjustment sleeve 14 is adjustably installed in the support sleeve 13 in an axial position, and the adjustment sleeve 14 is used for being matched with the elastic buffer device.
As shown in fig. 4, in this embodiment, the supporting sleeve 13 is detachably installed in the lower conductive tube 2, specifically, a screw installation hole 15 is formed on the outer peripheral surface of the supporting sleeve 13, correspondingly, a screw through hole corresponding to the screw installation hole 15 is also formed on the lower conductive tube 2, and the supporting sleeve 13 can be fixed in the lower conductive tube 2 by screwing a screw in the screw installation hole 15. In order to mount the adjustment sleeve 14, the support sleeve 13 is threaded on its inner circumferential surface. In other embodiments, only the lower conductive tube may be provided with a through hole, and the support sleeve is fixed in the lower conductive tube by welding after the support sleeve reaches the set installation position.
The structure of the adjusting sleeve 14 is as shown in fig. 5, the middle part of the adjusting sleeve 14 is penetrated by the pull rod 3, the adjusting sleeve 14 comprises a threaded section 16 connected with the supporting sleeve 13, the adjusting sleeve 14 is installed in the supporting sleeve 13 through the threaded section 16 in a threaded manner, and the installation height of the adjusting sleeve 14 in the supporting sleeve 13 can be adjusted steplessly due to the threaded connection between the adjusting sleeve 14 and the supporting sleeve 13. The adjusting sleeve 14 further comprises a flange 17 arranged at one end of the threaded section 16, the flange 17 is provided with a tool matching hole 18, correspondingly, as shown in fig. 6, the lower conductive tube 2 is provided with an operation window 20 corresponding to the installation position of the adjusting sleeve 14, when the position of the adjusting sleeve 14 needs to be adjusted, an adjusting tool is inserted into the tool matching hole 18 through the operation window 20, the adjusting sleeve 14 is rotated relative to the supporting sleeve 13 by applying force to the adjusting sleeve 14 through the adjusting tool so as to adjust the height of the adjusting sleeve 14, and the tool matching hole 18 forms a tool matching part of the adjusting sleeve 14. For adjusting tools, the tool can be inserted into the tool fitting hole 18, such as a cylindrical metal rod, an internal hexagon wrench, etc.
The setting of instrument cooperation portion aims at cooperating with corresponding instrument, and the operator of being convenient for adjusts the whole set of application of force through corresponding instrument, in other embodiments, can also not set up the flange, but sets up the column arch in relevant position department as instrument cooperation portion, correspondingly, the adjustment instrument is the sleeve pipe, when needing the mounting height of adjustment cover, with the sleeve pipe suit in order to exchange the whole set of application of force rotation on the column arch. Of course, the flange can be processed into a gear structure, when the installation height of the adjusting sleeve needs to be adjusted, one end of the ejector rod is used for propping against the teeth, and the other end of the ejector rod is hammered, so that the adjusting sleeve is forced to rotate.
In other embodiments, a tool matching part is not arranged on the adjusting sleeve, naturally, an adjusting window is not required to be arranged on the lower conductive tube, and when the height of the adjusting sleeve is required to be adjusted, the closing spring support or the opening spring support is detached and then the adjusting sleeve is screwed to adjust the installation height of the adjusting sleeve on the supporting sleeve. The switching-on spring support and the switching-off spring support are not required to be of a split structure, namely, the support is only provided with the support sleeve, the adjusting sleeve is not required to be arranged, and a plurality of groups of screw through holes are correspondingly formed in the lower conductive tube along the axis, so that the mounting position of the support sleeve is adjustable. One of the closing spring support and the opening spring support can be arranged to be a split adjustable structure, and the other one can be arranged to be a stop block or a check ring fixed in the lower conducting tube. The pull rod spring support can also be arranged into the split adjustable structure. Certainly, on the premise that the installation positions of the closing spring support and the opening spring support are accurately set, the closing spring and the opening spring can be guaranteed to have proper compression amount, and the stop block or the check ring can be fixed in the lower conductive pipe to serve as the closing spring support and the opening spring support.
In addition, in order to ensure that the closing buffer spring 8 can stably contact and compress with the closing spring support 11 and the pull rod spring support 10, the elastic buffer device further comprises a blocking sleeve 19 arranged at two ends of the closing buffer spring 8, specifically, the blocking sleeve 19 is sleeved on the pull rod 3, the area of the surface where the blocking sleeve 19 is matched with the closing spring support 11, the pull rod spring support 10 and the closing buffer spring 8 is larger than the area of the end part of the closing buffer spring 8, and the closing spring support 11 and the pull rod spring support 10 can be ensured to stably contact with the end part of the closing buffer spring 8. Similarly, in order to ensure that the opening buffer spring 9 can stably contact and compress with the opening spring support 12 and the pull rod spring support 10, the two ends of the opening buffer spring are also provided with the blocking sleeves 19.
Based on the concept that the blocking sleeve 19 is disposed to ensure that the elastic buffer device can be stably and stop-fitted with each support, in other embodiments, a blocking plate may be further fixed to the end portions of the closing buffer spring and the opening buffer spring to increase the area of the mating end of the elastic buffer device and the corresponding support, and to ensure that the elastic buffer device can be stably and stop-fitted with each support. Certainly, when the areas of the end surfaces of the closing buffer spring and the opening buffer spring are large enough to ensure that each adjusting sleeve can be stably matched with each buffer spring in a blocking manner, the elastic buffer device can be provided with no blocking sleeve, so that each support is directly matched with each buffer spring.
In the embodiment, the structure and the working principle of the switch device are described by taking the vertical telescopic grounding switch as an example, so as to specifically describe the specific structure and the working principle of the movable end assembly of the switch device, and the movable end assembly with the structure can also be applied to other types of switch devices. Therefore, in other embodiments, the switch device of the present invention may also be a horizontal telescopic ground switch, as shown in fig. 7, during the action of the horizontal telescopic ground switch, when the lower conductive tube 2 moves from the vertical position to the horizontal position, the pull rod moves towards the direction of the base relative to the lower conductive tube, when the lower conductive tube reaches the horizontal position, the upper conductive tube 21 expands relative to the lower conductive tube 2, the movable contact 23 contacts with the fixed contact 22 to conduct electricity, the ground switch is switched to the closing state, and the closing buffer spring is compressed; when lower contact tube 2 moved to vertical position by horizontal position, the pull rod moved for lower contact tube dorsad base place direction, when waiting that lower contact tube 2 reachd vertical position, the conducting arm was folding to be accomodate, and ground switch switches into the separating brake state, and separating brake buffer spring is compressed. In addition, different from the movable end assembly of the vertical telescopic grounding switch, the vertical position of the horizontal telescopic grounding switch is an opening position, and the horizontal position is a closing position, so that under the condition that the elastic modulus of the closing buffer spring and the elastic modulus of the opening buffer spring are the same, the length of the closing buffer spring is set to be relatively longer, the length of the opening buffer spring is set to be relatively shorter, and the horizontal telescopic grounding switch can be used as a valve hall grounding switch.
Of course, the switch device may also be a vertical telescopic disconnecting switch or a horizontal telescopic disconnecting switch, wherein the moving end assembly of the horizontal telescopic disconnecting switch has the same structure as the moving end assembly of the horizontal telescopic grounding switch in each of the above embodiments, and the moving end assembly of the vertical telescopic disconnecting switch has the same structure as the moving end assembly of the vertical telescopic grounding switch in each of the above embodiments.
The embodiment 2 of the switching device is different from the embodiments in that in the embodiments, the adjusting sleeve is installed in the supporting sleeve in a threaded manner, and the purpose is to enable the installation position of the adjusting sleeve relative to the supporting sleeve to be adjustable.
Different from the above embodiments, in embodiment 3 of the switching device of the present invention, the elastic buffer device includes a closing buffer spring and an opening buffer spring which are relatively independent in structure. In this embodiment, only one buffer spring is provided, the middle of the buffer spring is fixed on the pull rod, the upper end of the buffer spring can be matched with the closing spring support or the annular plate used for preventing the pull rod from radially swinging at the upper end of the lower conductive tube, so that the pull rod is compressed when the lower conductive tube moves to a position close to the vertical position, and the lower end of the buffer spring can be matched with the opening spring support or the rotating seat, so that the pull rod is compressed when the lower conductive tube moves to a position close to the horizontal position. Thus, only one spring needs to be fixed on the pull rod.
The embodiment 4 of the switching device of the present invention is different from the above embodiments in that each buffer spring is sleeved on the pull rod in the above embodiments, and is intended to be compressed at the end of the movement stroke of the lower conductive tube to provide movement resistance between the pull rod and the lower conductive tube.
Different from the above embodiments, in embodiment 5 of the switching device of the present invention, in each of the above embodiments, the elastic buffer device includes a closing buffer spring and a opening buffer spring, and the elastic buffer device is intended to be compressed and provide resistance between the pull rod and the lower conductive tube by its own elastic force after being compressed.
Different from the above embodiments, in embodiment 6 of the switching device of the present invention, actually, the upper end of the lower conductive tube is provided with an annular plate, and the pull rod passes through the annular plate to prevent the pull rod from radially deflecting. Therefore, a closing spring support and an opening spring support do not need to be additionally arranged on the lower conductive tube, and the structure of the movable end assembly is matched with each buffer spring, so that each buffer spring can be compressed at the tail end of the motion stroke of the lower conductive tube.
The embodiment of the movable end assembly of the switching device comprises the movable end assembly, wherein the movable end assembly comprises a base 1 and a lower conductive tube 2, the lower conductive tube 2 is hinged on the base 1, the upper end of the lower conductive tube 2 is connected with a corresponding upper conductive tube to form a conductive arm, the end part of the conductive arm is used for installing a movable contact, and the conductive arm is unfolded, folded and stored in the pitching motion process of the lower conductive tube 2. For the switching device provided with the movable end assembly, after the conductive arm is completely unfolded, the conductive arm supports the movable contact to be in conductive fit with the fixed contact, so that the switching device enters a switching-on state, and after the conductive arm is folded and stored, the conductive arm drives the movable contact to be separated from the fixed contact, so that the switching device enters a switching-off state. Specifically, the structure and the working principle of the moving end assembly of the switch device in the present invention are the same as those of the moving end assemblies of the switch devices in the above embodiments, and are not described herein again.
Claims (10)
1. A switchgear moving end assembly comprising:
a base;
a lower conductive tube;
a pull rod;
it is characterized in that the utility model is characterized in that,
an elastic buffer device is arranged between the pull rod and the lower conductive tube, and the elastic buffer device is compressed only at the tail end of the movement stroke of the lower conductive tube so as to provide resistance to the relative movement between the pull rod and the lower conductive tube.
2. The switch device moving end assembly of claim 1, further comprising a support disposed on the pull rod and/or the lower conductive tube, the support adapted to engage the resilient buffer for compression of the resilient buffer.
3. The switchgear moving end assembly as claimed in claim 2, wherein said support is adjustable in position along the axial direction of the draw bar; or the support comprises a support sleeve and an adjusting sleeve, the support is fixed at the installation position through the support sleeve, the support is in stop fit with the elastic buffer device through the adjusting sleeve, and the axial position of the adjusting sleeve is adjustably installed in the support sleeve.
4. The moving end assembly of a switching device as claimed in claim 3, wherein the lower conductive tube defines an operating window corresponding to the adjustment sleeve.
5. The switch device moving end assembly of claim 3 wherein the adjustment sleeve includes a threaded section that threadably engages the support sleeve, the adjustment sleeve being threadably mounted within the support sleeve by the threaded section.
6. The movable end assembly of a switch device as claimed in claim 5, wherein the adjusting sleeve has a tool engaging portion formed on an outer peripheral surface thereof for engaging with an adjusting tool to apply force to rotate the adjusting sleeve, and the lower conductive tube has an operating window formed thereon corresponding to the adjusting sleeve.
7. The switch device moving end assembly of claim 6 wherein one end of said threaded section is provided with a flange and said tool engaging portion is a tool engaging hole formed in said flange for insertion of an adjustment tool.
8. The switch device moving end assembly according to any one of claims 2 to 7, wherein the support and the lower conductive tube are correspondingly provided with screw mounting holes, and the support is fixed in the lower conductive tube by inserting screws into the screw mounting holes.
9. The moving end assembly of a switching device as claimed in claim 1, wherein the elastic buffer means comprises a closing buffer spring and an opening buffer spring arranged in parallel along the axial direction of the pull rod, one of the closing buffer spring and the opening buffer spring is compressed when the lower conductive tube moves to the horizontal position, the other one of the closing buffer spring and the opening buffer spring is compressed when the lower conductive tube moves to the vertical position, and the length of the buffer spring compressed when the lower conductive tube moves to the horizontal position is greater than the length of the spring compressed when the lower conductive tube moves to the horizontal position.
10. A switching device comprising a moving terminal assembly, a moving contact and a stationary contact, wherein the moving contact is mounted at an end of the moving terminal assembly, and wherein the moving terminal assembly is the moving terminal assembly of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097051.XA CN111091994B (en) | 2019-11-11 | 2019-11-11 | Movable end assembly of switch device and switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097051.XA CN111091994B (en) | 2019-11-11 | 2019-11-11 | Movable end assembly of switch device and switch device |
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| CN111091994A true CN111091994A (en) | 2020-05-01 |
| CN111091994B CN111091994B (en) | 2022-06-17 |
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| CN201911097051.XA Active CN111091994B (en) | 2019-11-11 | 2019-11-11 | Movable end assembly of switch device and switch device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130075125A1 (en) * | 2011-09-28 | 2013-03-28 | Utility Solutions Inc. | Utility power-line-jumper apparatus with external venting |
| CN104882305A (en) * | 2015-06-05 | 2015-09-02 | 沈阳东牧电器制造有限公司 | High-voltage switch operating mechanism |
| CN104979126A (en) * | 2015-06-19 | 2015-10-14 | 中国西电电气股份有限公司 | Extra-high-voltage direct-current grounding switch |
| CN108417431A (en) * | 2018-03-27 | 2018-08-17 | 河南平高电气股份有限公司 | A kind of high-voltage switch gear and disconnecting link, conductive tube assembly |
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2019
- 2019-11-11 CN CN201911097051.XA patent/CN111091994B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130075125A1 (en) * | 2011-09-28 | 2013-03-28 | Utility Solutions Inc. | Utility power-line-jumper apparatus with external venting |
| CN104882305A (en) * | 2015-06-05 | 2015-09-02 | 沈阳东牧电器制造有限公司 | High-voltage switch operating mechanism |
| CN104979126A (en) * | 2015-06-19 | 2015-10-14 | 中国西电电气股份有限公司 | Extra-high-voltage direct-current grounding switch |
| CN108417431A (en) * | 2018-03-27 | 2018-08-17 | 河南平高电气股份有限公司 | A kind of high-voltage switch gear and disconnecting link, conductive tube assembly |
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|---|---|
| CN111091994B (en) | 2022-06-17 |
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