A self-balancing overhead crane clamp that prevents scratches and lifting injuries

Abstract

The present invention provides a self-balancing crane clamp that prevents scratches and lifting injuries, and relates to the technical field of crane clamps. The clamp comprises a limiting sleeve, wherein the two ends of the limiting sleeve are respectively connected to a left clamp body and a right clamp body in horizontal sliding relation, and the left clamp body and the right clamp body are connected to a linear drive assembly in transmission relation; the limiting sleeve is further provided with a fixed cover, and the middle portion of the fixed cover is connected to an adjustment block in horizontal sliding relation, and the end of the adjustment block close to the left clamp body is connected to a left traction rope, and the left traction rope is connected to a left winding mechanism; the end of the adjustment block close to the right clamp body is connected to a right traction rope, and the right traction rope is connected to a right winding mechanism; the left winding mechanism and the right winding mechanism are both communicatively connected to a controller, and the controller is communicatively connected to a spirit level. The beneficial effect of the present invention is that it can monitor and judge the center of gravity position of the crane clamp and the steel coil in real time, and adjust the corresponding clamp position in time to avoid the steel coil from tilting or bumping due to uneven quality during transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead crane clamps, and in particular to a self-balancing overhead crane clamp capable of preventing scratches and lifting injuries. Background Art

[0002] A bridge crane is a type of lifting equipment that is horizontally mounted above workshops, warehouses, and material yards to lift materials. Because its two ends are located on tall concrete columns or metal supports, its shape is like a bridge and it has high stability. It is the most widely used and largest type of lifting machinery.

[0003] Currently, when using an overhead crane clamp to lift and transport steel coils, to prevent the coils from tilting or tipping due to uneven force, and to prevent edge defects during handling, a centering device, such as a laser centering device or a scale centering device, is typically installed on the overhead crane clamp to ensure that the two clamping arms of the overhead crane clamp are symmetrically clamped on both sides of the coil. However, in actual use, because this centering device can only macroscopically align the coil before clamping, it cannot accurately determine the center of gravity of the overhead crane clamp and the coil when the mass distribution of the overhead crane clamp itself is uneven, when the mass distribution of the coil is uneven, or when there is a deviation in the tightness of the coil ends. Furthermore, it is also impossible to accurately determine the center of gravity of the coil when the center of gravity of the coil changes during transfer. Therefore, existing overhead crane clamps have certain limitations in practical applications. They cannot accurately determine the center of gravity of the overhead crane clamp and the coil in real time, resulting in poor performance. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a self-balancing, anti-bumping and anti-lifting crane clamp that can monitor and judge the center of gravity position of the crane clamp and the steel coil in real time, and adjust the corresponding clamp position in time to avoid the steel coil from tilting due to uneven quality during transportation.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a self-balancing overhead crane clamp that prevents bumps and lifting injuries, which includes a limit sleeve, wherein both ends of the limit sleeve are horizontally slidably connected to the left clamp body and the right clamp body, and the left clamp body and the right clamp body are transmission-connected to a linear drive assembly; the limit sleeve is also provided with a fixed cover shell, and the middle part of the fixed cover shell is horizontally slidably connected to an adjustment block along the sliding direction of the left clamp body, and the end of the adjustment block close to the left clamp body is connected to the left traction rope, and the end of the left traction rope close to the left clamp body is connected to the left winding mechanism; the end of the adjustment block close to the right clamp body is connected to the right traction rope, and the end of the right traction rope close to the right clamp body is connected to the right winding mechanism; the left winding mechanism and the right winding mechanism are both communicatively connected to a controller, and the controller is communicatively connected to a spirit level that can measure the horizontality of the limit sleeve. In this way, when the self-balancing, anti-bumping and anti-lifting injury overhead crane clamp provided by the present invention is used to lift the steel coil, during the entire lifting process, the present invention can use a spirit level to measure the horizontality of the limit sleeve and the overall inclination of the entire overhead crane clamp in real time, and transmit the detection results to the controller in real time; in this way, when the limit sleeve and the entire overhead crane clamp are tilted, the present invention can control the corresponding left and right winding mechanisms through the controller to respectively reel in and release the traction rope on the corresponding side, so that the traction rope traction adjustment block moves in the corresponding direction, and changes the weight distribution on the left and right sides of the entire overhead crane clamp until the overhead crane clamp tends to be horizontal, thereby avoiding the steel coil from tipping over due to uneven quality of the overhead crane clamp or uneven quality distribution of the steel coil.

[0006] Furthermore, the left winding mechanism includes a left winding drum and a left fixed pulley, both of which are rotatably mounted on a fixed housing. The left winding drum is transmission-connected to a left drive motor, which is communicatively connected to a controller. The end of the left traction rope passes over the left fixed pulley and is then wound around the left winding drum. Thus, during the winding and unwinding process of the left winding mechanism, the present invention can guide the left traction rope via the left fixed pulley to prevent it from becoming tangled or knotted within the fixed housing.

[0007] Furthermore, a roller is provided at the bottom of the adjusting block, and the friction between the adjusting block and the fixed cover is reduced by the roller.

[0008] Furthermore, the linear drive assembly includes a dual-output motor, with a left drive screw and a right drive screw respectively connected at each end of the dual-output motor. The left drive screw is threadedly connected to the left clamp body, and the right drive screw is threadedly connected to the right clamp body. In this way, when moving the left and right clamp bodies, the dual-output motor can synchronously drive the left and right drive screws to rotate, thereby synchronously driving the left and right clamp bodies to move horizontally.

[0009] Furthermore, the linear drive assembly also includes a left power cylinder and a right power cylinder arranged on the outside of the limiting sleeve, the cylinder body of the left power cylinder is connected to the limiting sleeve, and the piston rod end of the left power cylinder is connected to the left clamp body; the cylinder body of the right power cylinder is connected to the limiting sleeve, and the piston rod end of the right power cylinder is connected to the right clamp body. At this time, when the present invention is used to lift the steel coil, the present invention can further strengthen the connection between the limiting sleeve and the left clamp body and the right clamp body through the left power cylinder and the right power cylinder, so that the left clamp body and the right clamp body can operate more stably; at the same time, the left power cylinder and the right power cylinder can also stably and accurately adjust the corresponding clamp body flexibly to ensure that the steel coil is not squeezed against the side wall of the corresponding clamp body, and avoid the situation where the overflow edge of the steel coil is bent, thereby improving the practicality of the entire device.

[0010] Furthermore, the lower part of the left clamp body and the lower part of the right clamp body are both provided with elastic arc-shaped support components, and the inner ring of the steel coil is contacted and fitted through the elastic arc-shaped support components.

[0011] Furthermore, the elastic arc support assembly includes a fixed base plate, a fixed seat is provided at the lower end of the fixed base plate, the fixed seat is connected to the lower part of the left clamp body or the lower part of the right clamp body, an elastic element is provided at the upper end of the fixed base plate, a top arc plate is provided at the upper end of the elastic element, a guide mechanism is provided between the top arc plate and the fixed base plate, and a wear-resistant layer is provided on the surface of the top arc plate. In this way, during the lifting process of the steel coil, since the component used to directly contact the inner ring of the steel coil in the present invention is the top arc plate designed with arc-shaped corners at the edges and corners, and the curvature of the top arc plate itself is similar to the curvature of the top of the inner ring of the steel coil, the present invention can make the top of the top arc plate fit together with the top of the inner ring of the steel coil, thereby greatly avoiding the left clamp body and the right clamp body from causing damage to the steel coil; at the same time, since the present invention has an elastic element between the fixed bottom plate and the top arc plate that can buffer the pressure borne by the steel coil, and a guide mechanism that guides the moving direction of the top arc plate, the present invention can also reduce the impact of the steel coil on the fixed bottom plate, prevent the top arc plate from lateral deviation, and avoid the steel coil from lateral shaking, thereby further improving the practicality of the entire device.

[0012] Furthermore, a top hanger is provided at the upper end of the limiting sleeve, a reinforcement frame is connected between the top hanger and the limiting sleeve, and the connection strength between the top hanger and the limiting sleeve is strengthened by the reinforcement frame.

[0013] Furthermore, a left radar rangefinder is provided on the side of the left clamp body opposite the right clamp body, and a right radar rangefinder is provided on the side of the right clamp body opposite the left clamp body. Both the left radar rangefinder and the right radar rangefinder are communicatively connected to the controller. Thus, when the left and right clamp bodies are used to clamp a steel coil, the present invention can measure the distance between the steel coil and the inner wall side edge of the corresponding clamp body using the corresponding radar rangefinder. When the distance reaches a set warning value, the corresponding clamp body is controlled to stop moving, thereby preventing the side wall of the left or right clamp body from squeezing the steel coil.

[0014] Furthermore, the level is communicatively connected to an indicator light, so that the present invention can intuitively indicate the horizontal state of the limiting sleeve and the entire overhead travelling crane clamp through the indicator light, and remind the operator.

[0015] It can be seen from the above technical solutions that the present invention has the following advantages:

[0016] 1. When the self-balancing, anti-bumping and anti-lifting injury crown crane clamp provided by the present invention is used to lift the steel coil, the present invention can measure the horizontality of the limit sleeve and the overall inclination of the entire crown crane clamp in real time through the spirit level during the entire lifting process, and transmit the detection results to the controller in real time; and when the limit sleeve and the entire crown crane clamp are tilted, the present invention can control the corresponding left and right reeling mechanisms through the controller to reel in and release the traction rope on the corresponding side respectively, so that the traction rope traction adjustment block moves in the corresponding direction and changes the weight distribution on the left and right sides of the entire crown crane clamp until the crown crane clamp tends to be horizontal, thereby avoiding the situation where the steel coil is tipped over due to uneven mass of the crown crane clamp or uneven mass distribution of the steel coil;

[0017] 2. The present invention can simultaneously drive the left and right clamp bodies through dual output motors and left and right power cylinders, so that the left and right clamp bodies can stably and accurately adjust the transmission to ensure that the steel coil is not squeezed against the side walls of the corresponding clamp body and avoid the situation where the steel coil overflows and is bent, thereby improving the practicality of the entire device;

[0018] 3. During the lifting process of the steel coil, since the component used to directly contact the inner ring of the steel coil in the present invention is a top arc plate designed with arc-shaped corners at the edges and corners, and the curvature of the top arc plate itself is similar to the curvature of the top of the inner ring of the steel coil, the present invention can make the top of the top arc plate fit together with the top of the inner ring of the steel coil, thereby greatly avoiding the left clamp body and the right clamp body from causing damage to the steel coil; at the same time, since the present invention has an elastic element between the fixed bottom plate and the top arc plate to buffer the pressure borne by the steel coil, and a guide mechanism to guide the moving direction of the top arc plate, the present invention can also reduce the impact of the steel coil on the fixed bottom plate, prevent the top arc plate from lateral deviation, and avoid the steel coil from lateral shaking, thereby further improving the practicality of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0021] Figure 2 It is a cross-sectional view of a specific embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the internal structure of the fixed cover in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the elastic arc support assembly in the present invention.

[0024] Figure 5 It is a structural schematic diagram of the left clamp body, the right clamp body and the limiting sleeve in the present invention.

[0025] In the figure: 1. Top hanger, 2. Reinforcement frame, 3. Limit sleeve, 4. Right clamp body, 5. Right power cylinder, 6. Elastic arc support assembly, 7. Left clamp body, 8. Left power cylinder, 9. Fixed cover, 10. Level, 11. Control box, 12. Indicator light, 13. Dual output motor, 14. Right transmission screw, 15. Right radar rangefinder, 16. Left radar rangefinder, 17. Left transmission screw, 18. Controller, 19. Connecting seat, 20. Adjustment block, 21. Right traction rope, 22. Right take-up drum, 23. Right fixed pulley, 24. Roller, 25. Left fixed pulley, 26. Left traction rope, 27. Left take-up drum, 28. Top arc plate, 29. Wear-resistant layer, 30. Elastic element, 31. Guide column, 32. Fixed cylinder, 33. Fixed base plate, 34. Fixed seat, 35. Connecting bolts DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figures 1 to 5 As shown, the present invention provides a self-balancing overhead crane clamp that prevents scratches and lifting injuries, which includes a limiting sleeve 3, a top hanger 1 is provided at the upper end of the limiting sleeve 3, and a reinforcement frame 2 is connected between the top hanger 1 and the limiting sleeve 3.

[0028] The two ends of the inner side of the limiting sleeve 3 are respectively connected to the left clamp body 7 and the right clamp body 4 in a horizontal sliding manner, and the left clamp body 7 and the right clamp body 4 are connected to a linear drive assembly for transmission, and the linear drive assembly is used to drive the left clamp body 7 and the right clamp body 4 away from or closer to each other. Specifically, the linear drive assembly includes a dual-output motor 13, and the dual-output motor 13 is arranged between the left clamp body 7 and the right clamp body 4, and the two ends of the dual-output motor 13 are respectively connected to a left transmission screw 17 and a right transmission screw 14, wherein the left transmission screw 17 is threadedly connected to the left clamp body 7, and the right transmission screw 14 is threadedly connected to the right clamp body 4. In this way, the present invention can synchronously drive the left transmission screw 17 and the right transmission screw 14 to rotate through the dual-output motor 13, and then synchronously drive the left clamp body 7 and the right clamp body 4 to move horizontally.

[0029] In addition, in order to further improve the movement stability of the left clamp body 7 and the right clamp body 4, and improve the movement accuracy of the left clamp body 7 and the right clamp body 4, the linear drive assembly also includes a left power cylinder 8 and a right power cylinder 5 arranged on the outside of the limiting sleeve 3, and the cylinder body of the left power cylinder 8 is connected to the limiting sleeve 3, and the piston rod end of the left power cylinder 8 is connected to the left clamp body 7; the cylinder body of the right power cylinder 5 is connected to the limiting sleeve 3, and the piston rod end of the right power cylinder 5 is connected to the right clamp body 4. In this way, when the left clamp body 7 and the right clamp body 4 are about to move into place, the present invention can also stably and accurately adjust the corresponding clamp body flexibly through the left power cylinder 8 and the right power cylinder 5 to ensure that the steel coil is not squeezed against the side wall of the corresponding clamp body, and to avoid the situation where the overflow edge of the steel coil is bent, and to improve the practicality of the entire device.

[0030] In addition, a control box 11 and a fixed cover 9 are provided on the outside of the limiting sleeve 3, wherein the control box 11 is provided with a controller 18, a spirit level 10, and an indicator light. The controller 18 is communicatively connected with the spirit level 10 and the indicator light, and the spirit level 10 can measure the horizontality of the limiting sleeve 3, and the indicator light can indicate the measurement result of the spirit level 10 and the tilt condition of the limiting sleeve 3. The middle part of the fixed cover 9 is horizontally slidably connected with an adjustment block 20 along the sliding direction of the left clamp body 7 and the right clamp body 4, and a roller 24 is provided on the surface of the adjustment block 20 opposite to the inner wall of the fixed cover 9. The end of the adjustment block 20 close to the left clamp body 7 is connected to the left traction rope 26 through the connecting seat 19, and the end of the left traction rope 26 close to the left clamp body 7 is connected to the left winding mechanism; the end of the adjustment block 20 close to the right clamp body 4 is connected to the right traction rope 21 through the connecting seat 19, and the end of the right traction rope 21 close to the right clamp body 4 is connected to the right winding mechanism; and the left winding mechanism and the right winding mechanism are both communicated with the controller 18. In this way, when the limiting sleeve 3 and the entire overhead crane clamp are tilted, the present invention can control the corresponding left winding mechanism and the right winding mechanism through the controller 18 to respectively wind up and release the traction rope on the corresponding side, so that the traction rope traction adjustment block 20 moves in the corresponding direction and changes the weight distribution on the left and right sides of the entire overhead crane clamp until the overhead crane clamp tends to be horizontal, thereby avoiding the situation where the steel coil tips over due to uneven mass of the overhead crane clamp or uneven mass distribution of the steel coil.

[0031] Specifically, the left winding mechanism includes a left winding drum 27 and a left fixed pulley 25, both of which are rotatably mounted on the fixed cover 9, and the left winding drum 27 is located at the leftmost end of the fixed cover 9. The left winding drum 27 is transmission-connected to a left drive motor, and the left drive motor is communicatively connected to the controller 18. The end of the left traction rope 26 passes around the left fixed pulley 25 and is then wound around the left winding drum 27. The right winding mechanism includes a right winding drum 22 and a right fixed pulley 23, both of which are rotatably mounted on the fixed cover 9, and the right winding drum 22 is located at the rightmost end of the fixed cover 9. The right winding drum 22 is transmission-connected to a right drive motor, and the right drive motor is communicatively connected to the controller 18. The end of the right traction rope 21 passes around the right fixed pulley 23 and is then wound around the right winding drum 22.

[0032] The indicator light 12 uses multiple indicator lights to indicate the tilt status. Specifically, a left offset indicator light, a right offset indicator light, and a horizontal indicator light are provided on the control box 11, and the left offset indicator light and the right offset indicator light are located on the left and right sides of the horizontal indicator light, respectively. In this way, the present invention can directly indicate the tilt status of the overhead crane clamp by the position of the indicator light. Alternatively, the indicator light 12 can use only one indicator light to indicate the tilt status. Specifically, only one indicator light is provided on the control box 11, and the indicator light is configured to display different colors in the horizontal state, the left tilt state, and the right tilt state. In this way, the present invention can directly indicate the tilt status of the overhead crane clamp by the color of the indicator light.

[0033] In addition, in order to prevent the steel coil from colliding with the left clamp body 7 or the right clamp body 4 during the lifting process, the present invention further provides a left radar rangefinder 16 on the side of the left clamp body 7 opposite to the right clamp body 4, and provides a right radar rangefinder 15 on the side of the right clamp body 4 opposite to the left clamp body 7, and both the left radar rangefinder 16 and the right radar rangefinder 15 are communicatively connected to the controller 18. In this way, when the left clamp body 7 and the right clamp body 4 are used to clamp the steel coil, the present invention can measure the distance between the steel coil and the inner wall side of the corresponding clamp body through the corresponding radar rangefinder, and when the distance reaches the warning set value, the corresponding clamp body is controlled to stop moving, thereby preventing the side wall of the left clamp body 7 or the right clamp body 4 from squeezing the steel coil.

[0034] An elastic arc support assembly 6 is provided at the lower portion of the left clamp body 7 and the lower portion of the right clamp body 4. Specifically, the elastic arc support assembly 6 includes a fixed base plate 33, a fixed seat 34 is provided at the lower end of the fixed base plate 33, and the fixed seat 34 is detachably connected to the lower portion of the left clamp body 7 or the lower portion of the right clamp body 4 via a connecting bolt 35; an elastic element 30 and a fixed cylinder 32 are provided at the upper end of the fixed base plate 33, the elastic element 30 is preferably a spring, and a top arc plate 28 is provided at the upper end of the elastic element 30, a wear-resistant layer 29 is provided on the upper surface of the top arc plate 28, and a guide column 31 is provided on the lower surface of the top arc plate 28, and the guide column 31 is vertically slidably connected to the fixed cylinder 32 to form a guide mechanism. In this way, during the lifting process of the steel coil, since the component used to directly contact the inner ring of the steel coil in the present invention is the top arc plate 28 designed with arc-shaped corners at the edges and corners, and the curvature of the top arc plate 28 itself is similar to the curvature of the top of the inner ring of the steel coil, the present invention can make the top of the top arc plate 28 fit together with the top of the inner ring of the steel coil, thereby greatly avoiding the left clamp body 7 and the right clamp body 4 from causing damage to the steel coil; at the same time, since the present invention is provided with an elastic element 30 between the fixed bottom plate 33 and the top arc plate 28 to buffer the pressure borne by the steel coil, and a guide mechanism to guide the moving direction of the top arc plate 28, the present invention can also reduce the impact of the steel coil on the fixed bottom plate 33, prevent the top arc plate 28 from lateral deviation, and avoid the steel coil from lateral shaking, thereby further improving the practicality of the entire device.

[0035] In the description and claims of the present invention, as well as in the accompanying drawings, the terms "first," "second," "third," "fourth," and so forth (if any) are used to distinguish similar items and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "including," "comprising," and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

[0036] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-balancing crane clamp that prevents scratches and lifting injuries, characterized by: It includes a limiting sleeve, both ends of which are horizontally slidably connected to the left clamp body and the right clamp body, and the left clamp body and the right clamp body are transmission-connected to a linear drive assembly; the limiting sleeve is also provided with a fixed cover shell, and the middle portion of the fixed cover shell is horizontally slidably connected to an adjusting block along the sliding direction of the left clamp body, and one end of the adjusting block close to the left clamp body is connected to a left traction rope, and one end of the left traction rope close to the left clamp body is connected to a left winding mechanism; the left winding mechanism includes a left winding drum and a left fixed pulley, The left winding drum and the left fixed pulley are both rotatably mounted on the fixed cover, and the left winding drum is transmission-connected to the left drive motor, and the left drive motor is communicatively connected to the controller; the end of the left traction rope is wrapped around the left winding drum after passing over the left fixed pulley; the end of the adjusting block close to the right clamp body is connected to the right traction rope, and the end of the right traction rope close to the right clamp body is connected to the right winding mechanism; the right winding mechanism includes a right winding drum and a right fixed pulley, and the right winding drum and the right fixed pulley are both rotatably mounted on the fixed cover, and the left winding drum and the right fixed pulley are transmission-connected to the left drive motor, and the left drive motor is communicatively connected to the controller; the end of the left traction rope is wrapped around the left winding drum after passing over the left fixed pulley; the end of the adjusting block close to the right clamp body is connected to the right traction rope, and the end of the right traction rope close to the right clamp body is connected to the right winding mechanism The right winding drum is transmission-connected to a right drive motor, and the right drive motor is communicatively connected to the controller, and the end of the right traction rope is wound around the right fixed pulley and then wound around the right winding drum; the left winding mechanism and the right winding mechanism are both communicatively connected to the controller, and the controller is communicatively connected to a spirit level capable of measuring the horizontality of the limit sleeve; the lower part of the left clamp body and the lower part of the right clamp body are both provided with an elastic arc support assembly, and the elastic arc support assembly includes a fixed base plate, and the lower end of the fixed base plate is provided with a fixed seat, and the fixed seat It is connected to the lower part of the left clamp body or the lower part of the right clamp body; an elastic element is provided at the upper end of the fixed base plate, and a top arc plate is provided at the upper end of the elastic element, a guide mechanism is provided between the top arc plate and the fixed base plate, and a wear-resistant layer is provided on the surface of the top arc plate; a left radar rangefinder is provided on the side of the left clamp body opposite to the right clamp body, and a right radar rangefinder is provided on the side of the right clamp body opposite to the left clamp body, and both the left radar rangefinder and the right radar rangefinder are communicatively connected to the controller.

2. The self-balancing anti-bumping and anti-lifting injury overhead crane clamp according to claim 1 is characterized in that: A roller is provided at the bottom of the adjusting block.

3. The self-balancing anti-bumping and anti-lifting injury overhead crane clamp according to claim 1 is characterized in that: The linear drive assembly includes a dual-output motor, and the two ends of the dual-output motor are respectively connected to a left transmission screw and a right transmission screw. The left transmission screw is threadedly connected to the left clamp body, and the right transmission screw is threadedly connected to the right clamp body.

4. The self-balancing anti-bumping and anti-lifting injury overhead crane clamp according to claim 3 is characterized in that: The linear drive assembly also includes a left power cylinder and a right power cylinder arranged on the outside of the limiting sleeve. The cylinder body of the left power cylinder is connected to the limiting sleeve, and the end of the piston rod of the left power cylinder is connected to the left clamp body; the cylinder body of the right power cylinder is connected to the limiting sleeve, and the end of the piston rod of the right power cylinder is connected to the right clamp body.

5. The self-balancing, anti-bumping and anti-lifting crane clamp according to any one of claims 1 to 4, characterized in that: A top hanger is provided at the upper end of the limiting sleeve, and a reinforcement frame is connected between the top hanger and the limiting sleeve.

6. The self-balancing, anti-bumping and anti-lifting crane clamp according to any one of claims 1 to 4, characterized in that: The level is communicatively connected to an indicator light.

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