CN107695641B - Hydraulic roller driving type continuous belt changing device - Google Patents
Hydraulic roller driving type continuous belt changing device Download PDFInfo
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- CN107695641B CN107695641B CN201710860549.1A CN201710860549A CN107695641B CN 107695641 B CN107695641 B CN 107695641B CN 201710860549 A CN201710860549 A CN 201710860549A CN 107695641 B CN107695641 B CN 107695641B
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
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Abstract
The invention discloses a hydraulic roller driving type continuous belt changing device, which comprises a belt unloading mechanism for removing an old conveying belt and a belt supplying mechanism for providing a new conveying belt, wherein the tail end of the old conveying belt is connected with the starting end of the new conveying belt; the belt unloading mechanism is provided with a roller group for driving the old conveying belt to move, the roller group comprises more than two friction rollers, and the friction rollers in the roller group are meshed and linked with each other in the radial direction or meshed and linked through a meshing intermediate piece; at least one friction roller in the roller group is provided with a driving part for driving the friction roller to rotate.
Description
Technical Field
The invention relates to the technical field of belt conveyor maintenance, in particular to a hydraulic roller driving type continuous belt changing device.
Background
The belt conveyor is an important device in coal production, has irreplaceable effect in the coal production, and is an extremely important ring for realizing the coal from a working face to the ground. The belt is a carrier for bearing and transporting coal, but friction between a belt surface and materials exists in the long-time use process of the belt, the belt surface of the belt is scratched due to the friction between the belt and a roller, even a steel wire rope is rusted and broken, and potential safety hazards are buried in the operation of the belt. Therefore, in order to ensure the safe and stable operation of the rubber belt, the rubber belt must be replaced periodically, the length, volume and weight of the rubber belt are increased along with the increasing of the coal transportation amount, and the surrounding conditions of the belt conveyor are complicated, so that the work of replacing the rubber belt is complicated and difficult. Especially for a large-inclination long-distance conveyor, the belt changing difficulty is higher, and accidents such as belt slipping, belt breakage and the like are easy to happen; and because the underground operation is forced to stop production during the belt changing period, the production and the economic benefit of a coal mine are directly influenced by the belt changing time, the belt changing time is shortened, and the belt changing time is of great importance for improving the economic benefit of the coal industry.
In order to solve the above problems, the prior art also proposes a solution, for example, a utility model patent with publication number CN203975734U and name "belt conveyor belt changer" comprises a frame, a hoisting drum mounted on the frame and a driving motor for driving the hoisting drum to rotate, the driving motor drives the hoisting drum to rotate through a planetary gear transmission device, a steel wire rope is wound on the surface of the hoisting drum, one end of the steel wire rope is fixedly connected with the drum, the other end of the steel wire rope is connected with a rubber belt clamp plate, and the rubber belt clamp plate is connected with an old belt; when the driving motor drives the winding drum to rotate, the old belt is pulled to be removed. The device utilizes planetary gear transmission to transmit, has the advantage that the drive ratio is big, but the device can't realize drawing old area and send new area to go on in step, and can only carry out the short distance sticky tape and change.
For another example, the invention patent with the publication number of CN104003230A and the name of "a belt winding and unwinding device for belt conveyor" comprises a hydraulic cylinder, an upper and a lower crawler belt chassis, a hydraulic motor, and an anti-deviation device, wherein the hydraulic cylinder drives the upper and the lower crawler belt chassis to clamp the belt, the hydraulic motor with large torque rotates at two ends of the upper and the lower crawler belt chassis to drive the crawler belt to move, and the belt is pulled to move by the friction force between the crawler belt and the belt, thereby achieving the purpose of changing the belt. The winding and unwinding device described in this patent can realize continuous tape changing and synchronous tape changing and new tape feeding. However, the power parts for driving the conveying belt to move by the device are provided with the hydraulic cylinder and the hydraulic motor, the pressure of the hydraulic cylinder and the rotating speed of the hydraulic motor are mutually restricted, the control is complex, the power consumption is high, and the device is large in size due to the upper and lower crawler belts.
Disclosure of Invention
In view of the above, it is desirable to provide a hydraulic roller-driven continuous tape changer that not only can synchronously perform old tape drawing and new tape feeding, but also has simple control, low power consumption, and small volume.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a hydraulic roller driving type continuous belt changing device, which comprises a belt unloading mechanism for removing an old conveying belt and a belt supplying mechanism for providing a new conveying belt, wherein the tail end of the old conveying belt is connected with the starting end of the new conveying belt; the belt unloading mechanism is provided with a roller group for driving the old conveying belt to move, the roller group comprises more than two friction rollers, and the friction rollers in the roller group are meshed and linked with each other in the radial direction or meshed and linked through a meshing intermediate piece; at least one friction roller in the roller group is provided with a driving part for driving the friction roller to rotate.
Preferably, the belt supply mechanism is provided with a roller group for driving the new conveying belt to move, the roller group comprises more than two friction rollers, and the friction rollers in the roller group are radially meshed with each other or meshed through a meshing intermediate piece; at least one friction roller in the roller group is provided with a driving part for driving the friction roller to rotate.
Preferably, the roller groups of the belt unloading mechanism and the belt supply mechanism are respectively provided with two friction rollers, the two friction rollers of each roller group are meshed and linked through at least one first cylindrical gear, and one end of each roller group in the same direction of the two friction rollers is fixedly provided with a second cylindrical gear meshed with the first cylindrical gear.
Preferably, the roller groups of the belt unloading mechanism and the belt supplying mechanism respectively set the shapes of the old conveying belt and the new conveying belt between the two friction rollers to be S-shaped, and the two friction rollers of each roller group are meshed and linked through two first cylindrical gears which are meshed with each other.
Preferably, the friction roller comprises a roller and a roller shaft, wherein the outer circle surface of the roller is coated with rubber, and the roller rotates relative to the roller shaft; the driving part is a hydraulic motor, the hydraulic motor is fixed on the roller shaft, and the belt unloading mechanism and the belt supply mechanism are both provided with speed regulating parts for regulating the rotating speed of the hydraulic motor.
Preferably, each friction roller is provided with two hydraulic motors which are fixed at two ends of the friction roller; a reduction gearbox is further arranged in the friction roller, the input end of the reduction gearbox is connected with the hydraulic motor, and the output end of the reduction gearbox is connected with the roller.
Preferably, the roller groups of the belt unloading mechanism and the belt supply mechanism are respectively provided with an inter-roller connecting plate fixedly connected with roller shafts of the two friction rollers, a central shaft parallel to the roller shafts is arranged in the middle of the inter-roller connecting plate, and the inter-roller connecting plate and the roller groups rotate relative to the central shaft.
Preferably, the connecting plate is equipped with the drive between the roller center pin pivoted worm gear, the worm-gear cover is located the center pin, the one end of worm is equipped with and is convenient for rotate the crank of worm, the crank is located the upside of connecting plate between the roller.
Preferably, the belt unloading mechanism and the belt supplying mechanism are respectively provided with a tensioning mechanism for providing tension for the old conveying belt or the new conveying belt, and the tensioning mechanisms are respectively arranged above the roller groups; the tensioning mechanism comprises two friction rollers which are respectively arranged above and below the old conveying belt or the new conveying belt, and the friction rollers are linked with the friction rollers of the roller group through a third cylindrical gear.
Preferably, the tape changer is further provided with a braking mechanism, and the braking mechanism is arranged at one end of the tape changer; the brake mechanism comprises a friction brake component and a power component, the friction brake component is arranged at the input end of the old conveying belt and/or the output end of the new conveying belt, and the power component is a hydraulic cylinder.
Preferably, the braking mechanism is further provided with a speed sensor for detecting the moving speed of the old conveying belt and/or the new conveying belt, and the power component is electrically connected with the speed sensor.
Preferably, the friction braking part comprises a fixed bottom plate and a movable braking plate, and the bottom plate and the braking plate are respectively positioned above and below the old conveying belt and/or the new conveying belt; the brake plate is connected with a piston rod of the hydraulic cylinder; the friction braking part is also provided with an elastic part which pushes the braking plate to brake towards the old conveying belt and/or the new conveying belt.
According to the hydraulic roller driving type continuous belt changing device provided by the embodiment of the invention, the belt unloading mechanism is provided with the roller group comprising more than two friction rollers, the friction rollers in the roller group drive the old conveying belt to be removed of the belt conveyor to move, the movement of the old conveying belt can drive the new conveying belt to replace the old conveying belt to move, and the friction rollers in the roller group are meshed and linked with each other in the radial direction or meshed and linked through the meshing intermediate piece, so that the arrangement of driving parts in the friction rollers is simplified, the control is simple, the load of each friction roller is averaged, and the power consumption is saved on the whole; therefore, the hydraulic roller driving type continuous belt changing device provided by the embodiment of the invention realizes synchronous belt changing of the old belt and the new belt, is simple to control, low in power consumption and small in size, and is more suitable for belt changing of a large-inclination-angle or long-distance belt conveyor.
Drawings
FIG. 1 is a schematic view of a hydraulic roll-driven continuous belt changer according to an embodiment of the present invention;
FIG. 2 is a schematic view of a friction roller in a hydraulic roller-driven continuous belt changer according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the connecting plate between the rollers in the hydraulic drum-driven continuous belt changer according to the embodiment of the present invention;
FIG. 5 is a schematic projection view of FIG. 4;
FIG. 6 is a schematic view of a braking mechanism in a hydraulic cylinder driven continuous belt changer according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of fig. 6.
Detailed Description
The embodiment of the invention provides a hydraulic roller driving type continuous belt changing device, which comprises a belt unloading mechanism for removing an old conveying belt and a belt supplying mechanism for providing a new conveying belt, wherein the tail end of the old conveying belt is connected with the starting end of the new conveying belt; the belt unloading mechanism is provided with a roller group for driving the old conveying belt to move, the roller group comprises more than two friction rollers, and the friction rollers in the roller group are meshed and linked with each other in the radial direction or meshed and linked through a meshing intermediate piece; at least one friction roller in the roller group is provided with a driving part for driving the friction roller to rotate.
For better understanding of the belt changing device, before the belt changing device is introduced, a belt changing process of the whole belt conveyor is introduced, and the belt changing process comprises the following steps:
1) stopping the machine, stopping the operation of the belt conveyor, and separating the power driving device from the conveying belt to enable the conveying belt to be in a free state;
2) the fixed belt replacing device is fixed below a machine head at the upper part of the conveyor well if the fixed belt replacing device is an inclined well conveyor, and can be arranged at any position below the conveyor, preferably two ends of the conveyor if the fixed belt replacing device is other conveyors;
3) connecting, namely cutting off an old conveying belt below a belt conveyor corresponding to the belt changing device, connecting one end of the old conveying belt to a belt unloading mechanism of the belt changing device, and connecting the other end of the old conveying belt to a belt supplying mechanism of the belt changing device and connecting the old conveying belt with a new conveying belt; when in connection, a special connecting belt is fixed at the head parts of the two sections of the conveying belts at the cut part, because the length of the conveying belts is not enough to be connected to the belt unloading mechanism and the belt supplying mechanism of the belt changing device at the same time after the cutting;
4) the tape changing step comprises the steps of starting a tape unloading mechanism and a tape supplying mechanism of the tape changing device, starting tape changing, wherein the speeds of the tape unloading mechanism and the tape supplying mechanism can be adjusted according to the tape changing condition;
the tape change in the step 4 can have two working modes; one mode is an automatic mode, namely, the belt is automatically changed after the belt is started until the belt is changed or an operator manually stops the belt; the other mode is a jog mode, namely the jog mode is automatically stopped after the jog mode is started and works for a preset time, and the jog mode is suitable for debugging or fault finding if the jog mode works for 1 minute.
So that the manner in which the features and advantages of the embodiments of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings.
FIG. 1 is a schematic view of a hydraulic roller-driven continuous belt changer according to an embodiment of the present invention, and as shown in FIG. 1, a hydraulic roller-driven continuous belt changer includes a belt unloading mechanism, a belt feeding mechanism, and a braking mechanism; wherein,
the belt unloading mechanism is provided with a roller group for driving the old conveying belt 7 to move, the roller group comprises two friction rollers 2-2 and 2-3, and the radial directions of the friction rollers 2-2 and 2-3 are meshed and linked through two first cylindrical gears 12-1 and 12-2 which are meshed with each other; second cylindrical gears 1-2 and 1-3 meshed with the first cylindrical gears 12-1 and 12-2 are fixed at one ends of the friction rollers 2-2 and 2-3 in the same direction;
the friction rollers 2-2 and 2-3 are respectively provided with two hydraulic motors 23, and the hydraulic motors 23 are fixed at two ends of the friction rollers;
the hydraulic motor 23 has the advantages of small volume, light weight, simple structure, good manufacturability, insensitivity to pollution of oil, impact resistance, small inertia and the like;
further, the rotation speed of the hydraulic motor 23 can be adjusted to make the movement between the belt unloading mechanism and the belt supplying mechanism more coordinated; the belt unloading mechanism and the belt supply mechanism are both provided with speed regulating components for regulating the rotating speed of the hydraulic motor 23;
specifically, the speed regulation means may be a variable pump, that is, the rotation speed of the hydraulic motor 23 is regulated by regulating the amount of oil supplied by the variable pump; the variable pump can be controlled by a control part (not shown in the figure) of the tape changer;
it will be appreciated that the speed regulation means may also be other means for regulating the flow of fluid to the hydraulic motor 23, for example the speed regulation means may be a flow valve, i.e. to control the flow of fluid to the hydraulic motor 23 in case of a certain oil pump specification;
further, the control unit may be a Programmable Logic Controller (PLC);
it can be understood that the control component may also be other logic control components, such as a single chip microcomputer (Microcontrollers).
Thus, when the belt changing device works, the two hydraulic motors 23 drive the friction rollers 2-2 and 2-3 to rotate, and the rotation of the friction rollers 2-2 and 2-3 pulls the old conveying belt 7 to move, so that the old conveying belt 7 is removed;
further, the start and stop of the hydraulic motor 23 may also be controlled by the control unit so that the movement of the two friction rollers in the roller set of the belt discharging mechanism is more coordinated.
Since the friction rollers 2-2, 2-3 are engaged and linked in the radial direction through the two first cylindrical gears 12-1, 12-2 which are engaged with each other, the friction rollers are in rigid linkage, so that when the loads of the friction rollers are inconsistent, the friction rollers play a role of average load, and the power consumption is saved on the whole.
It will be appreciated that the friction rollers 2-2, 2-3 may be linked by other meshing means than by cylindrical gears, such as chain sprockets, synchronous belt pulleys, etc.
In order to reduce the load of the belt unloading mechanism, the belt supply mechanism is provided with a roller group which drives the new conveying belt 11 to move, the roller group comprises two friction rollers 2-1 and 2-4, and the radial directions of the friction rollers 2-1 and 2-4 are meshed and linked through two first cylindrical gears 12-1 and 12-2 which are meshed with each other; second cylindrical gears 1-1 and 1-4 meshed with the first cylindrical gears 12-1 and 12-2 are fixed at one ends of the friction rollers 2-1 and 2-4 in the same direction;
and the friction rollers 2-1 and 2-4 of the belt supply mechanism and the belt unloading mechanism are respectively provided with two hydraulic motors 23, and the hydraulic motors 23 are fixed at two ends of the friction rollers.
FIG. 2 is a schematic view of a friction roller in a hydraulic roller driven continuous belt changer according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of FIG. 2; as shown in fig. 2 to 3, the rubbing roller includes a roller 24 having an outer circumferential surface coated with a rubber 22, and a roller shaft (not shown in the drawings), the roller 24 rotating with respect to the roller shaft; the driving part is a hydraulic motor 23, and the hydraulic motor 23 is fixed on the roller shaft; a reduction gearbox 25 is also arranged in the friction roller, the input end of the reduction gearbox 25 is connected with the hydraulic motor 23, and the output end of the reduction gearbox 25 is connected with the roller 24;
since the rotation speed of the hydraulic motor 23 is generally high, the reduction gearbox 25 is provided, and the reduction gearbox 25 can be multi-stage reduction to obtain a relatively large reduction ratio.
As shown in fig. 1, in order to increase the friction force between the friction rollers and the conveyor belt, the roller sets of the belt unloading mechanism and the belt supply mechanism respectively set the shapes of the old conveyor belt 7 and the new conveyor belt 11 between the two friction rollers to be S-shaped;
specifically, the technical effect that the shape of the old conveyor belt 7 and the new conveyor belt 11 between two friction rollers is set to be S-shaped is as follows: the belt changing device pulls out an old conveying belt 7 of the belt conveyor, simultaneously synchronously sends the old conveying belt 11 into the belt changing device, the new conveying belt 11 replaces the position of the old conveying belt 7, the old conveying belt 7 and the new conveying belt 11 are S-shaped because of the shape between the two friction rollers, the friction force is large, the self weight of the conveying belt is avoided, the conveying belt freely slides down, and the free movement of the conveying belt on the conveyor is also avoided.
In order to facilitate the shape of the old conveying belt 7 and the new conveying belt 11 between the two friction rollers to be S-shaped, the roller sets of the belt unloading mechanism and the belt supplying mechanism are arranged to be capable of rotating in the vertical direction in the embodiment of the invention;
specifically, the roller sets of the belt unloading mechanism and the belt supply mechanism are respectively provided with an inter-roller connecting plate 5 fixedly connected with roller shafts of two friction rollers, a central shaft 51 parallel to the roller shafts is arranged in the middle of the inter-roller connecting plate 5, and the inter-roller connecting plate 5 and the roller sets can rotate relative to the central shaft 51; the inter-roller connecting plate 5 is shown in fig. 4 and 5;
as shown in fig. 1, 4 and 5, in order to facilitate driving the roller sets of the belt unloading mechanism and the belt supplying mechanism to rotate in the vertical direction, the inter-roller connecting plate 5 is provided with a worm gear and a worm for driving the central shaft 51 to rotate, the worm gear 8 is sleeved on the central shaft 51, one end of the worm 9 is provided with a hand crank 52 for facilitating rotation of the worm 9, and the hand crank 52 is located on the upper side of the inter-roller connecting plate 5;
thus, the hand crank 52 is rotated to drive the worm 9 to rotate, the worm 9 rotates to drive the worm wheel 8 to rotate, and the worm wheel 8 and the central shaft 51 are linked in the radial direction, so that the whole roller set can rotate in the vertical direction;
the process of setting the shape of the old conveyor belt 7 between the two friction rollers to an S-shape is: pulling the old conveyer belt 7 by other power devices such as a winch to enable the old conveyer belt 7 to penetrate through a channel between two friction rollers of the belt unloading mechanism at an upward angle of 45 degrees and reach the upper part of the friction roller 2-2; then, the worm 9 is rotated to drive the worm wheel 8 to rotate, so that the connecting plate 5-2 between the rollers is driven to rotate, and the rotation is carried out for 180 degrees, and the S-shaped winding of the old conveying belt 7 is completed;
the process of setting the shape of the new conveyor belt 11 between the two friction rollers to be S-shaped is similar and will not be described in detail.
Furthermore, the belt unloading mechanism and the belt supplying mechanism are respectively provided with a tensioning mechanism for providing tensioning force for the old conveying belt 7 or the new conveying belt 11, and the tensioning mechanisms are respectively arranged above the roller group;
the tensioning mechanism is used for preventing the old conveying belt 7 or the new conveying belt 11 from sliding downwards under the action of gravity, so that the tensioning mechanism is arranged above the roller group;
specifically, when the belt changer sets the old conveyor belt 7 and the new conveyor belt 11 to the roller set, and the power part of the roller set is not yet turned on, or the belt changer is suspended during operation, the old conveyor belt 7 and the new conveyor belt 11 may slide down under the action of gravity, and the sliding down may have a certain influence on the whole belt changing process, and therefore needs to be avoided.
The tensioning mechanism comprises two friction rollers (not shown in the figure) which are respectively arranged above and below the old conveying belt 7 or the new conveying belt 11, and the friction rollers are linked with the friction rollers of the roller group through a third cylindrical gear;
specifically, one end of each of the two friction rollers above and below the new conveying belt 11 in the same direction is provided with a fourth cylindrical gear 4-2 and a fourth cylindrical gear 6-2, the fourth cylindrical gear 4-2 is meshed with the third cylindrical gear 3-2, and the third cylindrical gear 3-2 is meshed with the second cylindrical gear 1-3 of the friction roller;
similarly, one ends of the two friction rollers above and below the old conveying belt 7 in the same direction are respectively provided with a fourth cylindrical gear 4-1 and a fourth cylindrical gear 6-1, the fifth cylindrical gear 4-1 is meshed with the third cylindrical gear 3-1, and the third cylindrical gear 3-1 is meshed with the second cylindrical gear 1-4 of the friction roller;
because the two friction rollers are pressed together, the old conveying belt 7 or the new conveying belt 11 cannot move along the surfaces of the friction rollers, the fourth cylindrical gear 4-2 is linked with the friction rollers of the roller group, and the gravity of the old conveying belt 7 or the new conveying belt 11 cannot pull the friction rollers to rotate, so that the tensioning mechanism effectively avoids the old conveying belt 7 and the new conveying belt 11 from sliding downwards under the action of the gravity;
more specifically, the belt changing device has the technical effects of being provided with a tensioning mechanism: on the basis that the shapes of the old conveying belt 7 and the new conveying belt 11 between the two friction rollers are set to be S-shaped, the free sliding of the conveying belts caused by self weight is further avoided, and the free movement of the conveying belts on the conveyor is also avoided;
furthermore, the old conveying belt 7 and the new conveying belt 11 are S-shaped between the two friction rollers, and the tensioning mechanisms can be independently arranged, so that the effect of avoiding the free sliding of the conveying belts due to self weight can be independently generated, and the effects can also be jointly used, thereby having better effect.
When the belt replacing device works normally, the friction roller rotates along with the rotation of the friction roller, the rotating direction is consistent with the moving direction of the old conveying belt 7 or the new conveying belt 11, and the moving of the old conveying belt 7 or the new conveying belt 11 is further assisted, namely the tension of the old conveying belt 7 or the new conveying belt 11 is increased;
in addition, because the number of teeth of the fourth cylindrical gear 4-2 and the third cylindrical gear 3-2 is far less than that of the second cylindrical gears 1-3 and 1-4, the rotation speed is increased, so that the old conveyor belt 7 or the new conveyor belt 11 can slip on the friction roller of the tensioning mechanism in normal operation, but the operation of the whole device is not influenced.
Fig. 6 is a schematic view of a braking mechanism in a hydraulic drum-driven continuous belt changer according to an embodiment of the present invention, and fig. 7 is a cross-sectional view of fig. 6, as shown in fig. 1, 6 and 7, the braking mechanism being provided at one end of the belt changer, the braking mechanism including a brake housing and a hydraulic cylinder 17; wherein,
the brake boxes, i.e., friction brake members, include an upper brake box 20, a middle brake box 21, and a lower brake box 14, the old conveyor belt 7 passes through between the upper brake box 20 and the middle brake box 21, and the new conveyor belt 11 passes through between the middle brake box 21 and the lower brake box 14; the upper brake box 20 and the lower brake box 14 are respectively provided with brake plates 15-2 and 15-1 with brake directions facing the conveying belt, the top of the middle brake box 21 is matched with the upper brake box 20 to brake the old conveying belt 7, namely, the top of the middle brake box 21 is a bottom plate matched with the brake plate 15-2 of the upper brake box 20; the bottom of the middle brake box 21 is matched with the lower brake box 14 to brake the new conveying belt 11, namely the bottom of the middle brake box 21 is a bottom plate matched with the brake plate 15-1 of the lower brake box 14;
specifically, the brake plates 15-2 and 15-1 are connected with a piston rod of the hydraulic cylinder 17;
further, the upper brake box 20 is also provided with an elastic component 18 for pushing the brake plate 15-2 to brake towards the old conveyor belt 7; the lower brake box 14 is also provided with an elastic component 18 for pushing the brake plate 15-1 to brake towards the new conveying belt 11; the elastic member may be a belleville spring.
Specifically, when the tape changer normally works, the control component, namely the PLC instructs the piston rod of the hydraulic cylinder 17 to contract, the elastic component 18 is greatly compressed and is in an energy storage state, and the brake plates 15-2 and 15-1 are suspended; when braking is needed, the control component instructs the piston rod of the hydraulic cylinder 17 to extend, and the braking plates 15-2 and 15-1 perform braking under the double pressure of the hydraulic cylinder 17 and the elastic component 18;
thus, when the hydraulic cylinder 17 of the braking mechanism cannot work due to power failure or fault of the hydraulic pump, the braking plates 15-2 and 15-1 can brake under the pushing of the elastic component, and the problem that braking cannot be performed due to power failure or fault is solved;
the friction brake component of the embodiment of the invention is manufactured into the upper brake box, the middle brake box and the lower brake box, so that the friction brake component is convenient to manufacture and assemble, and can be understood as other structures.
Further, the brake mechanism is provided with a speed sensor (not shown in the figure) for detecting the moving speed of the old conveyor belt 7 and the new conveyor belt 11, and the hydraulic cylinder 17 is electrically connected with the speed sensor.
Specifically, the hydraulic cylinder 17 is electrically connected to the speed sensor through the control unit, that is, the speed sensor is electrically connected to the control unit, the control unit is electrically connected to the hydraulic cylinder 17 again, when the speed sensor detects that the moving speed of the old conveyor belt 7 or the new conveyor belt 11 is abnormal, the control unit is notified, and the control unit instructs the hydraulic cylinder 17 to brake;
further, in addition to detecting the moving speeds of the old conveyor belt and the new conveyor belt through the speed sensor, the braking mechanism may further include an encoder for detecting the rotational speeds of the friction rollers in the roller sets of the belt unloading mechanism and the belt feeding mechanism, and if the encoder detects that the rotational speeds of the friction rollers are abnormal, the encoder may also notify the control unit to perform braking, and the control unit may be a PLC.
Further, in order to support and fix the belt unloading mechanism, the belt supplying mechanism and the braking mechanism, the belt changing device is provided with upright posts 13-1 and 13-2 fixed on the ground, a lower braking box 14 of the braking mechanism is fixed on the upright posts 13-1 and 13-2, and an upper braking box 20 and a middle braking box 21 are sequentially fixed on the lower braking box 14;
the cross beams 10-1 and 10-2 for fixing the belt unloading mechanism and the belt supply mechanism are arranged on one side of the upper brake box 20, the middle brake box 21 and the lower brake box 14, and the cross beams 10-1 and 10-2 are in a stable triangular shape due to the cantilever beam form;
the connecting plates 5 between the rollers of the belt unloading mechanism and the belt supply mechanism are respectively fixed on the cross beams 10-1 and 10-2.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (11)
1. A hydraulic roller driving type continuous belt changing device is characterized by comprising a belt unloading mechanism for removing an old conveying belt and a belt supplying mechanism for providing a new conveying belt, wherein the tail end of the old conveying belt is connected with the starting end of the new conveying belt; the belt unloading mechanism is provided with a roller group for driving the old conveying belt to move, the roller group comprises two friction rollers, and the friction rollers in the roller group are meshed and linked with each other in the radial direction or meshed and linked through a meshing intermediate piece; each friction roller in the roller group is provided with a driving part for driving the friction roller to rotate;
the belt unloading mechanism is provided with an inter-roller connecting plate fixedly connected with roller shafts of the two friction rollers, a central shaft parallel to the roller shafts is arranged in the middle of the inter-roller connecting plate, and the inter-roller connecting plate and the roller group rotate relative to the central shaft;
the connecting plate is equipped with the drive between the roller center pin pivoted worm gear, the worm-gear cover is located the center pin, the one end of worm is equipped with and is convenient for rotate the crank of worm, the crank is located the upside of connecting plate between the roller.
2. The hydraulic roller-driven continuous belt changer according to claim 1, wherein the belt supply mechanism is provided with a roller set for moving the new conveying belt, the roller set comprises more than two friction rollers, and the friction rollers in the roller set are radially engaged with each other or engaged through an engagement intermediate member; at least one friction roller in the roller group is provided with a driving part for driving the friction roller to rotate.
3. The hydraulic roller-driven continuous belt changer according to claim 2, wherein the roller sets of the belt unloading mechanism and the belt feeding mechanism are each provided with two friction rollers, the two friction rollers of each roller set are meshed and linked through at least one first cylindrical gear, and a second cylindrical gear meshed with the first cylindrical gear is fixed to one end, in the same direction, of each of the two friction rollers of each roller set.
4. The hydraulic roller-driven continuous belt changer according to claim 3, wherein the roller sets of the belt unloading mechanism and the belt supplying mechanism respectively set the old conveying belt and the new conveying belt in an S-shape between two friction rollers, and the two friction rollers of each roller set are engaged and linked by two first cylindrical gears engaged with each other.
5. The hydraulic roller-driven continuous belt changer according to claim 3 or 4, wherein the friction roller comprises a roller whose outer circumferential surface is coated with a rubber sheet and a roller shaft, the roller rotating with respect to the roller shaft; the driving part is a hydraulic motor, the hydraulic motor is fixed on the roller shaft, and the belt unloading mechanism and the belt supply mechanism are both provided with speed regulating parts for regulating the rotating speed of the hydraulic motor.
6. The hydraulic roller-driven continuous belt changer of claim 5, wherein each of the friction rollers is provided with two hydraulic motors fixed to both ends of the friction roller; a reduction gearbox is further arranged in the friction roller, the input end of the reduction gearbox is connected with the hydraulic motor, and the output end of the reduction gearbox is connected with the roller.
7. The hydraulic drum-driven continuous belt changer according to claim 6, wherein the drum set of the belt supply mechanism is provided with an inter-roller connecting plate fixedly connecting the drum shafts of the two friction drums, the inter-roller connecting plate is provided with a center shaft in the middle thereof parallel to the drum shafts, and the inter-roller connecting plate and the drum set rotate relative to the center shaft.
8. The hydraulic roller-driven continuous belt changer according to claim 7, wherein the belt unloading mechanism and the belt supplying mechanism are each provided with a tensioning mechanism that provides a tensioning force to the old conveyor belt or the new conveyor belt, the tensioning mechanisms being each provided above the roller set; the tensioning mechanism comprises two friction rollers which are respectively arranged above and below the old conveying belt or the new conveying belt, and the friction rollers are linked with the friction rollers of the roller group through a third cylindrical gear.
9. The hydraulic cylinder-driven continuous belt changer according to any one of claims 1 to 4, further provided with a braking mechanism provided at one end of the belt changer; the brake mechanism comprises a friction brake component and a power component, the friction brake component is arranged at the input end of the old conveying belt and/or the output end of the new conveying belt, and the power component is a hydraulic cylinder.
10. The hydraulic drum-driven continuous belt changer according to claim 9, wherein the brake mechanism is further provided with a speed sensor that detects a moving speed of the old conveyor belt and/or the new conveyor belt, and the power unit is electrically connected to the speed sensor.
11. The hydraulic drum-driven continuous belt changer of claim 10, wherein the friction braking means comprises a fixed bottom plate and a movable braking plate, the bottom plate and the braking plate being located above and below the old conveyor belt and/or the new conveyor belt, respectively; the brake plate is connected with a piston rod of the hydraulic cylinder; the friction braking part is also provided with an elastic part which pushes the braking plate to brake towards the old conveying belt and/or the new conveying belt.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860549.1A CN107695641B (en) | 2017-09-21 | 2017-09-21 | Hydraulic roller driving type continuous belt changing device |
| AU2017432501A AU2017432501B2 (en) | 2017-09-21 | 2017-09-29 | Continuous belt changing device driven by hydraulic roller |
| PCT/CN2017/104582 WO2019056411A1 (en) | 2017-09-21 | 2017-09-29 | Continuous belt changing device driven by hydraulic roller |
| ZA2020/00285A ZA202000285B (en) | 2017-09-21 | 2020-01-15 | Continuous belt changing device driven by hydraulic roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860549.1A CN107695641B (en) | 2017-09-21 | 2017-09-21 | Hydraulic roller driving type continuous belt changing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107695641A CN107695641A (en) | 2018-02-16 |
| CN107695641B true CN107695641B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710860549.1A Active CN107695641B (en) | 2017-09-21 | 2017-09-21 | Hydraulic roller driving type continuous belt changing device |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN107695641B (en) |
| AU (1) | AU2017432501B2 (en) |
| WO (1) | WO2019056411A1 (en) |
| ZA (1) | ZA202000285B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109295608B (en) * | 2018-10-30 | 2024-04-19 | 常州市第八纺织机械有限公司 | Multi-axial warp knitting machine encoder speed increasing device |
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| CN104003230B (en) * | 2014-06-07 | 2016-05-04 | 太原理工大学 | A kind of adhesive tape draw off gear for ribbon conveyer |
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2017
- 2017-09-21 CN CN201710860549.1A patent/CN107695641B/en active Active
- 2017-09-29 AU AU2017432501A patent/AU2017432501B2/en not_active Ceased
- 2017-09-29 WO PCT/CN2017/104582 patent/WO2019056411A1/en active Application Filing
-
2020
- 2020-01-15 ZA ZA2020/00285A patent/ZA202000285B/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030052187A (en) * | 2001-12-20 | 2003-06-26 | 주식회사 포스코 | Belt change apparatus of sludge belt- press |
| CN203696897U (en) * | 2014-01-15 | 2014-07-09 | 中国神华能源股份有限公司 | Device and equipment for replacing belt conveyor roller |
| CN203833951U (en) * | 2014-04-22 | 2014-09-17 | 温州市万里马皮件服饰有限公司 | Strip cutter for leather |
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| CN106429177A (en) * | 2016-11-15 | 2017-02-22 | 太原理工大学 | Belt changing device of belt type conveyor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107695641A (en) | 2018-02-16 |
| AU2017432501A1 (en) | 2020-02-06 |
| ZA202000285B (en) | 2020-12-23 |
| AU2017432501B2 (en) | 2020-10-22 |
| WO2019056411A1 (en) | 2019-03-28 |
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