A crown block cable protection device

Abstract

The present application relates to a kind of crown block cable protection device, comprising: the trolley track of being fixed in the inside surface of the top of support column.Sliding sleeve is connected on the outside surface of the bottom of trolley track C-type trolley.Cable and protective pull rope line are movably connected on the outside surface of the bottom of C-type trolley.The bottom surface of the C-type trolley is fixedly installed with cable limiting unit, and the cable limiting unit includes cable support column, swing arm and semicircular clamping plate, and the top outside surface of the cable limiting unit is provided with broken wire limiting unit.The present application will pull the protective pull rope above the cable when pulley suddenly fails and appears jam, and the signal line on one end of protective pull rope will be pulled, and will generate certain drag force, so that the connection of signal line is stripped, power failure will signal transmission to host, so as to remind staff, since one end of signal line is fixedly connected with the position of limiting sleeve ring on the surface of slide plate, it will slide down under drag.

Description

Technical Field

[0001] This invention relates to the field of overhead crane automation technology in the metallurgical industry, and in particular to an overhead crane cable protection device. Background Technology

[0002] The overhead crane, the loading trolley, and the electrical control and drive systems that move with it all rely on sliding cables. These reciprocating sliding cables are the lifeline for maintaining the operation of the crane and trolley. Damage to the sliding cable renders the entire system inoperable, severely impacting production. When the crane cable travels on the cable track, sudden pulley malfunctions can cause jamming, potentially breaking the protective pull rope above the cable. Once the rope breaks, the cable loses its protection and may break, leading to production interruption. This protection circuit effectively prevents such incidents. A 24V disconnect power line is installed above the sliding cable. When jamming occurs, the protective rope breaks first, then the 24V disconnect power line is pulled open. The crane interlock automatically trips, preventing further movement and ensuring the cable is not broken.

[0003] In the prior art, patent document CN209177872U discloses a protective device for preventing damage to sliding cables and their traction arms. This device is applied to the electrical protection of mobile equipment and includes an alarm protection circuit. The alarm protection circuit consists of an alarm circuit and a protection circuit. The alarm circuit is composed of a relay branch and an alarm branch connected in parallel. The protection circuit is connected to AC 220V via a relay normally open contact KM-2 connected in series with the original crane control circuit. This utility model has a novel design and high practical value. It can effectively protect sliding cables that move with the crane and can also effectively sense minor deformations of the traction arm, preventing serious deformation of the traction arm from causing major accidents and ensuring the normal operation of cranes and other mobile equipment.

[0004] The existing technology has the following problems: When the trolley cable travels on the trolley cable track, the pulley is prone to sudden failure and jamming, which may break the protective rope above the cable. Once the rope is broken, the cable will lose its protection and may break. The trolley is driven by electricity. When there is no resistance on the surface of the trolley, it will slide to one side under the action of inertia. If it is not braked, the cable will be continuously pulled. Under the action of the cable's gravity, the cable will close in the middle. However, the wavy shape of the cable will pull on the cable outside the closing point, which will cause excessive pressure at the connection between the cable and the trolley. Under the pressure of the huge pressure, the connection of the cable will be dragged down, resulting in the cable falling off. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that when the trolley is not powered, it will slide and cannot be braked, and the cables will come together and pull on each other, resulting in cable breakage and damage due to pulling, and the cables will fall off from the connection.

[0006] To address the aforementioned technical problems, this invention provides a crane cable protection device.

[0007] In one embodiment of the present invention, it includes:

[0008] A trolley track fixed to the inner surface of the top of a support column.

[0009] A C-shaped trolley that is slidably fitted onto the outer surface of the bottom of the trolley track.

[0010] The cable and protective pull rope are attached to the outer surface of the bottom of the C-shaped trolley.

[0011] A cable limiting unit is fixedly installed on the bottom surface of the C-shaped trolley. The cable limiting unit includes a cable support column, a swing arm, and a semi-circular locking plate. A wire breakage limiting unit is provided on the top outer surface of the cable limiting unit. The wire breakage limiting unit includes a sliding plate, a limiting collar, and a signal line. Rotation lifting units are provided on the front and rear side surfaces of the cable limiting unit. The rotation lifting unit includes a push rack, a motor, a push rack disc, a semi-circular rack disc, and a support housing.

[0012] In one embodiment of the present invention, a push-deceleration unit is fixedly installed on the top outer surface of the C-shaped trolley, the push-deceleration unit including a hydraulic damper, an elastic arc plate and a trapezoidal brake pad.

[0013] In one embodiment of the present invention, a cable clamp connector is fixedly installed on the bottom surface of the C-shaped trolley, a support limiting plate is fixedly connected to the bottom surface of the cable clamp connector, a protective support sleeve is fixedly connected to the front and rear side surfaces of the support limiting plate and at the side edge positions, a trapezoidal track is fixedly connected to the middle position of the support limiting plate, a snap-fit ​​slide is movably sleeved on the outer surface of the trapezoidal track, and the outer surface of the snap-fit ​​slide is fixedly connected to the inner surface of the support sleeve, and the position of the pushing toothed rack is fixedly connected to the inner wall surface of the support sleeve.

[0014] In one embodiment of the present invention, the motor is fixedly installed at the middle position on both sides of the support limiting plate, the push tooth plate is positioned on the surface of the support limiting plate, and the tooth surface of the push tooth plate is movably sleeved on the outer surface of the output end of the motor. The back of the semi-circular tooth plate is fixedly connected to the middle position on the outer side of the push tooth plate, and the outer surface of the semi-circular tooth plate is movably sleeved on the outer surface of the push tooth bar. A cable support column is fixedly connected to the bottom surface of the support housing.

[0015] In one embodiment of the present invention, a limiting post is fixedly connected to the top edge of the support sleeve, one end of the swing arm is movably sleeved on the outer surface of the limiting post, and an elastic push wire is fixedly connected to the middle of the inner side of the swing arm.

[0016] In one embodiment of the present invention, the semi-circular snap-fit ​​plate is positioned at the inner bottom end of the swing arm, and the inner surface of the semi-circular snap-fit ​​plate is movably overlapped with the outer surface of the cable support column. A trapezoidal limiting block is fixedly connected to the outer surface of the protective support sleeve, and the outer surface of the swing arm is movably overlapped with the inner surface of the trapezoidal limiting block.

[0017] In one embodiment of the present invention, a signal line positioning sleeve is fixedly installed on both sides of the cable clamp connector. A limiting groove is formed on the inner side of the signal line positioning sleeve. A second support column is fixedly connected to the inner wall of both sides of the limiting groove. An elastic wire is movably sleeved on the outer side of the second support column. The outer side of the slide plate is movably sleeved on the inner wall of the limiting groove and the outer side of the second support column, respectively.

[0018] In one embodiment of the present invention, the limiting collar is positioned on the top surface of the signal line positioning sleeve and the outer surface of the slide plate, and an energized connector is fixedly installed on the bottom inner surface of the limiting slot and the bottom surface of the slide plate, and the outer surface of the signal line is positioned on the inner surface of the limiting collar.

[0019] In one embodiment of the present invention, a figure-eight support frame is fixedly installed on the top surface of the hydraulic damper, one end of the elastic arc plate is fixedly connected to the top inner wall of the figure-eight support frame, a hollow soft strip is provided on the inner wall of the elastic arc plate, and the trapezoidal brake pad is positioned on the top surface of the elastic arc plate.

[0020] In one embodiment of the present invention, rollers are provided on the inner sidewalls of the top of both sides of the C-shaped trolley, and an L-shaped support frame is fixedly connected to the top surface of the C-shaped trolley. One side surface of the hydraulic damper is fixedly connected to the inner side surface of the top of the L-shaped support frame.

[0021] The technical solution of the present invention has the following advantages compared with the prior art:

[0022] The overhead crane cable protection device of this invention, when the pulley suddenly malfunctions and becomes jammed, will break the protective pull rope above the cable. The signal wire at one end of the protective pull rope will generate a certain drag force under the pull, causing the connection of the signal wire to separate. The power failure will send a signal to the main unit to alert the employees. Since one end of the signal wire is fixedly connected to the limit collar on the surface of the slide plate, it will slide downwards under the drag. At the same time, the snap-fit ​​slide bar and the energized snap-fit ​​connector on the surface of the limit slot will connect to energize the hydraulic damper and brake the trolley. When the slide plate slides, the support column two will limit its position. Under rapid pull, the elastic wire will provide elastic buffering for the downward pressure of the slide plate to prevent the pull force from being too great and the signal wire from being pulled off the surface of the slide plate.

[0023] The overhead crane cable protection device of this invention extends when the hydraulic damper is energized, thereby bringing the surface of the figure-eight support frame into contact with the surface of the roller. Utilizing the inclined angle of the elastic arc plate surface, it fits into the roller surface. As the hydraulic damper continuously compresses, it works in conjunction with the trapezoidal brake pads to frictionally brake the roller. The shape of the figure-eight support frame allows for simultaneous frictional braking of both rollers, thereby reducing the sliding force of the rollers.

[0024] The present invention discloses a cable protection device for overhead cranes. The cable and protective pull rope are stacked on the top surface of a cable support column. Simultaneously, a motor rotates a push-grip disc, causing a semi-circular push-grip disc on the outer surface of the push-grip disc to push a push-grip strip on the inner wall of a support housing. As the support housing moves upward, a trapezoidal track bar limits its position to a locking strip on the inner surface of the support housing, allowing the support housing to slide vertically up and down. As the support housing continues to move upward, a trapezoidal limiting block on the outer surface of the protective support housing pushes a swing arm, causing it to converge towards the center. This allows a semi-circular locking plate at one end of the swing arm to engage with both sides of the cable support column, thus limiting its position. The swing arm's position on the side of the cable is thus limited, preventing the cable and protective pull rope from detaching due to pulling during movement. Attached Figure Description

[0025] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] Figure 1 This is a perspective view of the present invention;

[0027] Figure 2This is a schematic diagram of the three-dimensional structure of the C-shaped trolley in this invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the hydraulic damper in this invention;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the cable clamp connector in this invention.

[0030] Figure 5 This is a schematic diagram of the unfolded three-dimensional structure of the cable clamp connector in this invention;

[0031] Figure 6 This is a partial cross-sectional three-dimensional structural schematic diagram of the cable clamp connector in this invention;

[0032] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the cable clamp connector in this invention;

[0033] Figure 8 This is a schematic diagram of the three-dimensional structure of the semi-circular toothed disc in this invention;

[0034] Figure 9 This is a schematic diagram of the three-dimensional structure of the signal line positioning sleeve in this invention;

[0035] Figure 10 This is a three-dimensional structural diagram of the back of the signal line positioning sleeve in this invention.

[0036] Explanation of reference numerals in the accompanying drawings: 11. Support column one; 12. Trolley track; 13. C-type trolley; 131. Cable clamp connector; a1. Signal line positioning sleeve; c1. Limiting slot; c2. Support column two; c3. Elastic wire; c4. Slide plate; c5. Limiting collar; c6. Signal line; c7. Power-on clamp connector;

[0037] a2. Protective support casing; a3. Trapezoidal track bar; a4. Snap-fit ​​slider; a5. Support casing; a6. Push rack; a7. Motor; a8. Push rack disc; a9. Semi-circular rack disc; a10. Limiting post; a11. Swing arm; a12. Elastic push wire; a13. Semi-circular snap-fit ​​plate; a14. Trapezoidal limiting block; a15. Cable support post;

[0038] 132. Rollers; 133. L-shaped support frame;

[0039] 134. Hydraulic damper; b1. Figure-eight support frame; b2. Elastic arc plate; b3. Hollow flexible strip; b4. Trapezoidal brake pad;

[0040] 14. Cable; 15. Protective pull cord. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0042] Reference Figure 1 As shown, this invention provides a crane cable protection device.

[0043] like Figure 1 - Figure 10 As shown, including:

[0044] The trolley track 12 is fixed to the inner surface of the top of the support column 11.

[0045] A C-shaped trolley 13 is slidably fitted onto the outer surface of the bottom of the trolley track 12.

[0046] The cable 14 and the protective pull rope 15 are movably attached to the outer surface of the bottom of the C-shaped trolley 13.

[0047] A cable limiting unit is fixedly installed on the bottom surface of the C-type trolley 13. The cable limiting unit includes a cable support column a15, a swing arm a11, and a semi-circular snap plate a13. A wire breakage limiting unit is provided on the top outer surface of the cable limiting unit. The wire breakage limiting unit includes a sliding plate c4, a limiting collar c5, and a signal line c6. Rotation lifting units are provided on the front and rear sides of the cable limiting unit. The rotation lifting unit includes a push rack a6, a motor a7, a push rack a8, a semi-circular rack a9, and a support housing a5.

[0048] Furthermore, such as Figure 4 - Figure 8 As shown, a push-deceleration unit is fixedly installed on the top outer surface of the C-type trolley 13. The push-deceleration unit includes a hydraulic damper 134, an elastic arc plate b2, and a trapezoidal brake pad b4. A cable clamp connector 131 is fixedly installed on the bottom surface of the C-type trolley 13. A support limiting plate is fixedly connected to the bottom surface of the cable clamp connector 131. A protective support sleeve a2 is fixedly connected to the front and rear sides of the support limiting plate and at the side edges. A trapezoidal track a3 is fixedly connected to the middle position of the support limiting plate. A snap-fit ​​slide a4 is movably sleeved on the outer surface of the trapezoidal track a3. The outer surface of the snap-fit ​​slide a4 is fixedly connected to the inner surface of the support sleeve a5. After the support sleeve a5 moves upward...

[0049] In use, the cable limiting unit provided by this invention stacks the cable 14 and the protective pull rope 15 on the top surface of the cable support column a15. Simultaneously, the motor a7 rotates the push toothed disc a8, causing the semi-circular toothed disc a9 on the outer surface of the push toothed disc a8 to push the push toothed strip a6 on the inner wall of the support housing a5. After the support housing a5 moves upward, the trapezoidal track a3 limits its position to the locking slide strip a4 on the inner surface of the support housing a5, thus allowing the support housing a5 to... As the support housing a5 moves upward, the swing arm a11 is pushed by the trapezoidal limiting block a14 on the outer surface of the protective support housing a2, causing it to close towards the center. This allows the semi-circular snap plate a13 on one end of the swing arm a11 to fit onto the two sides of the cable support column a15, thus limiting its position. The swing arm a11 limits the position of the cable side, preventing the cable 14 and the protective pull rope 15 from falling off due to pulling when they move.

[0050] When in use, the disconnection limiting unit works by connecting one end of the signal line c6 to the limiting collar c5 on the surface of the slide plate c4. If the cable falls off and is dragged, it will slide downwards, pulling the signal line c6 to disconnect the power. The elastic wire c3 provides elastic buffering against the downward pressure of the slide plate c4, preventing excessive pulling force and limiting the position of the signal line c6.

[0051] Furthermore, such as Figure 4 - Figure 8 As shown, the motor a7 is fixedly installed at the middle position on both sides of the support limiting plate. The push tooth plate a8 is set on the surface of the support limiting plate, and the tooth surface of the push tooth plate a8 is movably sleeved on the outer surface of the output end of the motor a7. The back of the semi-circular tooth plate a9 is fixedly connected to the middle position on the outer side of the push tooth plate a8, and the outer surface of the semi-circular tooth plate a9 is movably sleeved on the outer surface of the push tooth strip a6. A cable support column a15 is fixedly connected to the bottom surface of the support housing a5.

[0052] When the cable support column a15, toothed rack a6, motor a7, push toothed disc a8, and swing arm a11 provided by the present invention are in use, the cable 14 and the protective pull rope 15 are stacked on the top surface of the cable support column a15 to limit the side of the cable and stack them together. At the same time, the motor a7 rotates the push toothed disc a8, so that the semi-circular toothed disc a9 on the outer surface of the push toothed disc a8 pushes the push toothed rack a6 on the inner wall of the support housing a5, thereby lifting and moving the support housing a5 upward, thereby changing the position of the support housing a5, and thus achieving the closing of the swing arm a11 towards the center.

[0053] Furthermore, such as Figure 4 - Figure 8 As shown, a limiting post a10 is fixedly connected to one edge of the top side of the support sleeve a5. One end of the swing arm a11 is movably sleeved on the outer surface of the limiting post a10. An elastic pushing wire a12 is fixedly connected to the middle of the inner side of the swing arm a11. The semi-circular snap plate a13 is located at the bottom of the inner side of the swing arm a11, and the inner surface of the semi-circular snap plate a13 is movably overlapped with the outer surface of the cable support post a15. A trapezoidal limiting block a14 is fixedly connected to the outer surface of the protective support sleeve a2, and the outer surface of the swing arm a11 is movably overlapped with the inner surface of the trapezoidal limiting block a14.

[0054] When the support housing a5, trapezoidal limiting block a14, swing arm a11, and semi-circular snap-fit ​​plate a13 provided by this invention are used, the support housing a5 will move the swing arm a11 together when it rises. As the support housing a5 continues to move upward, the trapezoidal limiting block a14 on the outer surface of the protective support housing a2 will be fixed in place, thereby pushing the swing arm a11 to close in the middle. The semi-circular snap-fit ​​plate a13 on one end of the swing arm a11 is sleeved on both sides of the cable support column a15, thereby limiting its position. The side of the cable is limited by one end of the swing arm a11, and the pull rope 15 will fall off due to pulling when it moves.

[0055] Furthermore, such as Figure 9 - Figure 10 As shown, a signal line positioning sleeve a1 is fixedly installed on both sides of the cable clamp connector 131. A limiting groove c1 is opened on the inner side surface of the signal line positioning sleeve a1. Support columns c2 are fixedly connected to the inner walls on both sides of the limiting groove c1. An elastic wire c3 is movably sleeved on the outer surface of the support column c2. The outer surface of the sliding plate c4 is movably sleeved on the inner wall of the limiting groove c1 and the outer surface of the support column c2, respectively.

[0056] When the support column c2, slide plate c4, and elastic wire c3 provided by this invention are used, the slide plate c4, in conjunction with the support column c2, limits its position when it slides. Under rapid pulling, the signal wires c6 will separate, and one end of the signal wire c6 will drive the slide plate c4 to move downward. The elastic wire c3 provides elastic buffering for the downward pressure of the slide plate c4, preventing the signal wire c6 from being pulled and broken from the surface of the slide plate c4 due to excessive pulling force.

[0057] Furthermore, such as Figure 9 - Figure 10As shown, the limiting collar c5 is positioned on the top surface of the signal line positioning sleeve a1 and the outer surface of the slide plate c4. The bottom inner surface of the limiting slot c1 and the bottom surface of the slide plate c4 are fixedly installed with a power-conducting connector c7. The outer surface of the signal line c6 is set on the inner surface of the limiting collar c5.

[0058] When using the limiting collar c5, energized connector c7, snap-fit ​​slider a4, and limiting slot c1 provided by this invention, one end of the signal line c6 is fixedly connected to the limiting collar c5 on the surface of the slide plate c4. Under dragging, it will slide downwards. At the same time, the snap-fit ​​slider a4 and the energized connector c7 on the surface of the limiting slot c1 are connected to energize the hydraulic damper 134 and brake the trolley. When the pulley suddenly malfunctions and becomes stuck, the protective pull rope above the cable will break. The signal line at one end of the protective pull rope will generate a certain drag force under the pull, causing the connection of the signal line c6 to be separated. The power failure will send a signal to the host to remind the employees.

[0059] Furthermore, such as Figure 9 - Figure 10 As shown, a figure-eight support frame b1 is fixedly installed on the top surface of the hydraulic damper 134. One end of the elastic arc plate b2 is fixedly connected to the inner top wall of the figure-eight support frame b1. A hollow soft strip b3 is provided on the inner wall of the elastic arc plate b2. The trapezoidal brake pad b4 is located on the top surface of the elastic arc plate b2. Rollers 132 are provided on the inner top walls of both sides of the C-shaped trolley 13. An L-shaped support frame 133 is fixedly connected to the top surface of the C-shaped trolley 13. One side surface of the hydraulic damper 134 is fixedly connected to the inner top surface of the L-shaped support frame 133.

[0060] When the figure-eight support frame b1, elastic arc plate b2, and trapezoidal brake pad b4 provided by this invention are in use, they will extend after the hydraulic damper 134 is energized, thereby bringing the surface of the figure-eight support frame b1 into contact with the surface of the roller 132. Utilizing the tilt angle of the surface of the elastic arc plate b2, the raised end will preferentially contact the surface of the roller 132. As the hydraulic damper 134 continuously compresses, the elastic arc plate b2 gradually becomes completely in contact with the surface of the roller 132. Combined with the trapezoidal brake pad b4, friction braking is applied to the roller 132. The shape of the figure-eight support frame b1 can simultaneously apply friction braking to both rollers 132, thereby reducing the sliding force of the rollers 132.

[0061] The working principle of this auxiliary loading and unloading device will be explained in detail below.

[0062] Cable 14 and protective pull rope 15 are stacked on the top surface of cable support column a15. At the same time, motor a7 rotates push toothed disc a8, so that semi-circular toothed disc a9 on the outer surface of push toothed disc a8 pushes push toothed strip a6 on the inner wall of support sleeve a5. After the support sleeve a5 moves upward, trapezoidal track a3 limits the position of locking slide strip a4 on the inner surface of support sleeve a5, so that support sleeve a5 slides vertically up and down. As the support housing a5 moves upward, the trapezoidal limiting block a14 on the outer surface of the protective support housing a2 pushes the swing arm a11, causing it to close towards the center. This allows the semi-circular snap plate a13 on one end of the swing arm a11 to fit onto both sides of the cable support column a15, thus limiting its position. The swing arm a11 limits the position of the cable side, preventing the cable 14 and the protective pull rope 15 from falling off due to pulling when they move.

[0063] When the pulley suddenly malfunctions and becomes jammed, the protective pull rope above the cable will break. The signal wire at one end of the protective pull rope will generate a certain drag force under the pull, causing the connection of the signal wire c6 to separate. The power failure will send a signal to the host to alert the employees. Since one end of the signal wire c6 is fixedly connected to the limit collar c5 on the surface of the slide plate c4, it will slide downwards under the pull. At the same time, the snap-fit ​​slide bar a4 and the energized snap-fit ​​connector c7 on the surface of the limit slot c1 are connected to energize the hydraulic damper 134 and brake the trolley. When the slide plate c4 slides, it is limited in position by the support column c2. Under rapid pull, the elastic wire c3 provides elastic buffering for the downward pressure of the slide plate c4 to prevent excessive pulling force. One end of the signal wire c6 is pulled off the surface of the slide plate c4 and breaks.

[0064] When the hydraulic damper 134 is energized, it extends, thereby bringing the surface of the figure-eight support frame b1 into contact with the surface of the roller 132. Utilizing the inclined angle of the elastic arc plate b2, it is brought into contact with the surface of the roller 132. As the hydraulic damper 134 continuously compresses, it works in conjunction with the trapezoidal brake pad b4 to apply frictional braking to the roller 132. The shape of the figure-eight support frame b1 allows for simultaneous frictional braking of both rollers 132, thereby reducing the sliding force of the rollers 132.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A crane cable protection device, comprising: A trolley track fixed to the inner surface of the top of a support column; A C-shaped trolley that is slidably fitted onto the outer surface of the bottom of the trolley track; The cable and protective pull rope are movably attached to the outer surface of the bottom of the C-type trolley. The feature is that: a cable limiting unit is fixedly installed on the bottom surface of the C-type trolley, the cable limiting unit includes a cable support column, a swing arm and a semi-circular snap plate, a wire breakage limiting unit is provided on the top outer surface of the cable limiting unit, the wire breakage limiting unit includes a sliding plate, a limiting collar and a signal line, and a rotation lifting unit is provided on the front and rear sides of the cable limiting unit, the rotation lifting unit includes a push rack, a motor, a push rack disc, a semi-circular rack disc and a support housing; A push-deceleration unit is fixedly installed on the top outer surface of the C-type trolley. The push-deceleration unit includes a hydraulic damper, an elastic arc plate, and a trapezoidal brake pad. A cable clamp connector is fixedly installed on the bottom surface of the C-type trolley. A support limiting plate is fixedly connected to the bottom surface of the cable clamp connector. A protective support sleeve is fixedly connected to the front and rear sides of the support limiting plate and at the side edges. A trapezoidal track is fixedly connected to the middle position of the support limiting plate. A snap-fit ​​slide is movably sleeved on the outer surface of the trapezoidal track. The outer surface of the snap-fit ​​slide is fixedly connected to the inner surface of the support sleeve. The position of the push-locking rack is fixedly connected to the inner wall of the support sleeve. The motor is fixedly installed at the middle position on both sides of the support limiting plate. The push tooth plate is set on the surface of the support limiting plate, and the tooth surface of the push tooth plate is movably sleeved on the outer surface of the motor output end. The back of the semi-circular tooth plate is fixedly connected to the middle position of the outer side of the push tooth plate, and the outer surface of the semi-circular tooth plate is movably sleeved on the outer surface of the push tooth bar. A cable support column is fixedly connected to the bottom surface of the support housing. A limiting post is fixedly connected to one edge of the top of the support housing, one end of the swing arm is movably sleeved on the outer surface of the limiting post, and an elastic push wire is fixedly connected to the middle of the inner side of the swing arm. The semi-circular snap-fit ​​plate is positioned at the bottom inner side of the swing arm, and the inner surface of the semi-circular snap-fit ​​plate is movably overlapped with the outer surface of the cable support column. A trapezoidal limit block is fixedly connected to the outer surface of the protective support sleeve, and the outer surface of the swing arm is movably overlapped with the inner surface of the trapezoidal limit block.

2. The overhead crane cable protection device according to claim 1, characterized in that: Signal line positioning sleeves are fixedly installed on both sides of the cable clamp connector. Limiting grooves are opened on the inner side of the signal line positioning sleeves. Support columns are fixedly connected to the inner walls on both sides of the limiting grooves. Elastic wires are movably sleeved on the outer side of the support columns. The outer side of the sliding plate is movably sleeved on the inner wall of the limiting groove and the outer side of the support column.

3. The overhead crane cable protection device according to claim 2, characterized in that: The limiting sleeve is positioned on the top surface of the signal line positioning sleeve and the outer surface of the slide plate. The bottom inner surface of the limiting slot and the bottom surface of the slide plate are fixedly installed with a power-conducting connector. The outer surface of the signal line is positioned on the inner surface of the limiting sleeve.

4. The overhead crane cable protection device according to claim 1, characterized in that: An eight-shaped support frame is fixedly installed on the top surface of the hydraulic damper. One end of the elastic arc plate is fixedly connected to the inner wall of the top of the eight-shaped support frame. Hollow soft strips are provided on the inner wall of the elastic arc plate. The trapezoidal brake pads are located on the top surface of the elastic arc plate.

5. The overhead crane cable protection device according to claim 1, characterized in that: Rollers are installed on the inner side walls of the top of both sides of the C-shaped trolley. An L-shaped support frame is fixedly connected to the top surface of the C-shaped trolley. One side surface of the hydraulic damper is fixedly connected to the inner top surface of the L-shaped support frame.

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