Hydraulic support large shaft hoisting tool

Abstract

The utility model provides a hydraulic support large shaft hoisting tool, which belongs to the technical field of hydraulic support large shaft carrying or hoisting, and comprises a clamping component and a connecting rod component connected to the upper end of the clamping component, the clamping component comprises a first shear plate and a second shear plate which are mutually hinged, a first clamping jaw and a second clamping jaw are fixed to the lower portion of a first scissor plate and the lower portion of a second scissor plate respectively, each of the first clamping jaw and the second clamping jaw comprises a middle clamping jaw and two side clamping jaws, the middle clamping jaw is located between the two side clamping jaws, and the side clamping jaws are connected with the middle clamping jaw through a transverse rod. The extension direction of the transverse rod is perpendicular to the movable plane of the clamping assembly. The technical problems that in the prior art, a scissor-shaped clamping jaw tool is poor in reliability and safety when clamping a hydraulic support large shaft are solved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support shaft handling or lifting technology, and in particular to a hydraulic support shaft lifting fixture. Background Technology

[0002] The hydraulic support shaft is a key component of a hydraulic support system. It primarily connects and supports the various parts of the hydraulic support, ensuring stable operation in environments such as coal mining. During the installation, maintenance, and replacement of components, the hydraulic support shaft often needs to be moved.

[0003] Currently, there are two common methods for handling the main shaft of a hydraulic support: manual handling and magnetic lifting. Manual handling involves workers lifting and moving the shaft by hand. This method is extremely labor-intensive and difficult when handling shafts with a diameter of 150mm and a weight exceeding 80kg. Magnetic lifting utilizes the attraction between the magnet and the shaft, but the small contact area between the magnet and the cylindrical surface of the shaft makes it inconvenient to operate and poses significant safety risks during lifting. Therefore, a scissor-shaped fixture for lifting the main shaft of a hydraulic support has emerged in the existing technology. When the fixture is lifted, two arc-shaped jaws at its lower end clamp the main shaft from both sides, thus solving the problem of operational convenience to some extent.

[0004] However, this existing tooling still has drawbacks. After lifting the hydraulic support shaft, the lower end of the tooling only has two arc-shaped grippers holding the shaft, meaning the shaft is only constrained by one arc-shaped gripper on each side. This results in poor reliability and stability. During lifting, the hydraulic support shaft is prone to swaying or even slipping if disturbed by external factors, affecting operational safety. Utility Model Content

[0005] This application provides a hydraulic support shaft lifting fixture, which solves the technical problems of poor reliability and safety in the prior art when using scissor-shaped gripper fixtures to hold hydraulic support shafts.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a hydraulic support shaft lifting fixture, including a clamping assembly and a connecting rod assembly connected to the upper end of the clamping assembly. The clamping assembly includes a first scissor plate and a second scissor plate that are hinged to each other. The lower parts of the first scissor plate and the second scissor plate are respectively fixed with a first clamping claw and a second clamping claw. The first clamping claw and the second clamping claw each include a middle clamping claw and two side clamping claws. The middle clamping claw is located between the two side clamping claws. The side clamping claws and the middle clamping claw are connected by a crossbar. The extension direction of the crossbar is perpendicular to the movable plane of the clamping assembly.

[0007] The first and second shear plates, hinged together in the clamping assembly, can rotate flexibly, causing the first and second clamping jaws at the bottom to move synchronously. Both the first and second clamping jaws include a central jaw and two side jaws. This structure increases the contact points and contact area between the clamping assembly and the main shaft, effectively dispersing the pressure of the main shaft on the clamping assembly, thus more reliably gripping the main shaft, preventing it from slipping during lifting, and improving the safety and stability of the lifting operation.

[0008] As a further improvement to the above solution, the linkage assembly includes a lifting plate and a connecting plate. The upper end of the connecting plate is hinged to one side of the lifting plate, and the lower ends of the connecting plate and the lifting plate are respectively hinged to the upper ends of the first scissor plate and the second scissor plate. The upper end of the lifting plate is provided with a lifting hole. When the hook drives the lifting plate to rise, the lifting plate drives the second scissor plate to move through the lower hinge point. At the same time, the connecting plate rotates relative to the lifting plate and drives the first scissor plate through its lower hinge point, so that the first and second scissor plates move towards the middle synchronously, thereby driving the clamping assembly to clamp the main shaft.

[0009] As a further improvement to the above scheme, the lifting plate and the first scissor plate are single-layer structures, while the connecting plate and the second scissor plate are double-layer structures. One side of the lifting plate is located between the double-layer structures at the upper end of the connecting plate and is connected through a pin. The upper end of the first scissor plate is located between the double-layer structures at the lower end of the connecting plate and is connected through a pin. The middle part of the first scissor plate is located between the double-layer structures of the second scissor plate and is connected through a pin. The lower end of the lifting plate is located between the double-layer structures at the upper end of the second scissor plate and is connected through a pin.

[0010] As a further improvement to the above solution, the lifting plate has a bend in the middle, and the upper end of the connecting plate is connected to the bend of the lifting plate. When the first and second shear plates open, this bend structure causes the end of the lifting plate with the lifting hole to tilt upwards, changing the position and angle of the lifting hole and significantly improving the ease of hooking the hook into the lifting hole. In actual lifting operations, operators do not need to spend too much effort to accurately align the lifting hole in a horizontal position, reducing the difficulty of operation and improving the work efficiency in the lifting preparation stage.

[0011] As a further improvement to the above solution, the lower ends of the middle jaws of the first and second clamping jaws are respectively provided with slots and protrusions. When the first and second clamping jaws are brought together, the protrusions can be inserted into the slots. When the first and second clamping jaws are brought together, the protrusions are inserted into the slots, achieving precise docking of the lower ends of the jaws. This makes the connection between the two clamping jaws tighter and more stable, effectively preventing relative displacement of the two clamping jaws due to uneven force during the lifting process, and further enhancing the gripping stability of the large shaft.

[0012] As a further improvement to the above solution, each side gripper is connected to the corresponding intermediate gripper by at least two crossbars, with the two ends of the crossbars connected to the side of the intermediate gripper and the side of the side gripper, respectively; the connection between each side gripper and the corresponding intermediate gripper by at least two connecting rods can improve the structural strength of the clamping assembly.

[0013] As can be seen from the above technical solutions, this utility model has at least the following technical effects or advantages:

[0014] 1. The first and second shear plates, hinged together in the clamping assembly, can rotate flexibly, driving the first and second clamping jaws at the bottom to move synchronously. Since both the first and second clamping jaws include a central jaw and two side jaws, this structure increases the contact points and contact area between the clamping assembly and the main shaft. Therefore, it effectively disperses the pressure of the main shaft on the clamping assembly, thus more reliably gripping the main shaft, preventing it from slipping during lifting, and improving the safety and stability of the lifting operation.

[0015] 2. Because the lifting plate has a bend in the middle, when the first and second shear plates open, the bend structure causes the end of the lifting plate with the lifting hole to tilt upwards, changing the position and angle of the lifting hole and significantly improving the ease of hooking the hook into the lifting hole.

[0016] 3. Since the lower ends of the middle jaws of the first and second clamping jaws are respectively provided with slots and protrusions, when the first and second clamping jaws are brought together, the protrusions can be inserted into the slots. Therefore, the connection between the two clamping jaws is tighter and more stable, effectively preventing relative displacement of the two clamping jaws due to uneven force during the lifting process, and further enhancing the gripping stability of the large shaft. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure One ;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure Two .

[0020] Explanation of reference numerals in the attached drawings: 1. First shear plate, 2. Second shear plate, 3. First clamping claw, 4. Second clamping claw, 5. Middle clamping claw, 6. Side clamping claw, 7. Crossbar, 8. Lifting plate, 9. Connecting plate, 10. Groove, 11. Protrusion. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.

[0022] This utility model discloses a hydraulic support shaft lifting fixture, which includes a clamping assembly and a connecting rod assembly. The clamping assembly is located below and is used to grip the shaft. The connecting rod assembly is connected to the upper end of the clamping assembly and plays the role of transmitting the lifting force.

[0023] like Figure 1 , Figure 2 As shown, the clamping assembly includes a first scissor plate 1 and a second scissor plate 2 hinged together. In this embodiment, a first clamping claw 3 and a second clamping claw 4 are respectively fixed to the lower parts of the first scissor plate 1 and the second scissor plate 2. The first clamping claw 3 and the second clamping claw 4 have the same structure, each including a central claw 5 and two side claws 6 located on either side of the central claw 5. The central claw 5 is positioned between the two side claws 6, and the side claws 6 are connected to the central claw 5 by a crossbar 7. The extension direction of the crossbar 7 is perpendicular to the movable plane of the clamping assembly. Furthermore, the surfaces of the first scissor plate 1 and the second scissor plate 2 that contact the hydraulic support shaft are both arc surfaces. Thus, when the first scissor plate 1 and the second scissor plate 2 are closed, the central claw 5 and the side claws 6 of the clamping assembly can wrap around the shaft from both sides, enhancing the reliability of gripping the shaft and avoiding the risk of the shaft slipping during lifting.

[0024] The linkage assembly includes a lifting plate 8 and a connecting plate 9. The lifting plate 8 is located above the clamping assembly, and its upper end has a lifting hole for connecting to the hook of an external lifting device. The lower end of the lifting plate 8 is connected to a second scissor plate 2. The upper end of the connecting plate 9 is hinged to one side of the lifting plate 8, and the lower end of the connecting plate 9 is connected to a first scissor plate 1.

[0025] Specifically, in this embodiment, the lifting plate 8 and the first scissor plate 1 are single-layer structures, while the connecting plate 9 and the second scissor plate 2 are double-layer structures. One side of the lifting plate 8 is located between the double-layer structures at the upper end of the connecting plate 9 and is connected by a pin; the upper end of the first scissor plate 1 is located between the double-layer structures at the lower end of the connecting plate 9 and is connected by a pin; the middle part of the first scissor plate 1 is located between the double-layer structures of the second scissor plate 2 and is rotatably connected by a pin; the lower end of the lifting plate 8 is located between the double-layer structures at the upper end of the second scissor plate 2 and is connected by a pin. This structure ensures the stability of the connection between the components and allows the clamping assembly to move flexibly during operation.

[0026] More specifically, the lifting plate 8 has a bend in the middle, and the upper end of the connecting plate 9 is connected to the bend of the lifting plate 8. When the first scissor plate 1 and the second scissor plate 2 open, the end of the lifting plate 8 with the lifting hole can be kept tilted upward, which makes it easier for the hook to be hooked into the lifting hole and improves the convenience of the lifting operation.

[0027] Furthermore, to further improve the reliability of gripping the large shaft, the lower ends of the middle jaw 5 of the first clamping jaw 3 and the middle jaw 5 of the second clamping jaw 4 are respectively provided with a groove 10 and a protrusion 11. In this way, when the first clamping jaw 3 and the second clamping jaw 4 are brought together, the protrusion 11 can be inserted into the groove 10, thereby enabling the lower ends of the first clamping jaw 3 and the second clamping jaw 4 to be connected.

[0028] On the other hand, each side gripper 6 is connected to the corresponding middle gripper 5 by at least two crossbars 7. This structure effectively improves the structural strength between the middle gripper 5 and the side gripper 6, ensuring that the side gripper 6 will not easily deform when bearing the weight of the large shaft, thus ensuring the safe operation of the lifting operation.

[0029] The working principle of this utility model is as follows:

[0030] In actual operation, the lifting fixture is first moved to a suitable position above the hydraulic support shaft. External force is used to open the first and second scissor plates 1 and 2, keeping the shaft between the first and second clamping jaws 3 and 4. Then, the lifting fixture is moved upwards using the hook. During this process, the connecting plate 9 rotates relative to the lifting plate 8, causing the first and second scissor plates 1 and 2 to converge, clamping the hydraulic support shaft between the first and second clamping jaws. After clamping, the hydraulic support shaft is in a lifted state. Under the weight of the hydraulic support shaft and the lifting fixture, the first and second scissor plates 1 and 2 maintain their convergence, thus holding the hydraulic support shaft in place. Finally, the lifting equipment is raised, achieving safe lifting of the hydraulic support shaft. The entire operation is simple and efficient, effectively improving the safety of lifting the hydraulic support shaft.

[0031] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this utility model and do not require that this utility model be constructed or operated in a specific orientation, and therefore should not be construed as limiting this utility model. The terms "connected" and "linked" in this utility model should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in its embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A hydraulic support shaft lifting fixture, comprising a clamping assembly and a connecting rod assembly connected to the upper end of the clamping assembly, the clamping assembly comprising a first shear plate (1) and a second shear plate (2) hinged to each other, characterized in that, The lower parts of the first scissor plate (1) and the second scissor plate (2) are respectively fixed with a first clamping claw (3) and a second clamping claw (4). The first clamping claw (3) and the second clamping claw (4) each include a middle clamping claw (5) and two side clamping claws (6). The middle clamping claw (5) is located between the two side clamping claws (6). The side clamping claws (6) and the middle clamping claw (5) are connected by a crossbar (7). The extension direction of the crossbar (7) is perpendicular to the movable plane of the clamping assembly.

2. The hydraulic support shaft lifting fixture according to claim 1, characterized in that, The linkage assembly includes a lifting plate (8) and a connecting plate (9). The upper end of the connecting plate (9) is hinged to one side of the lifting plate (8). The lower ends of the connecting plate (9) and the lifting plate (8) are respectively hinged to the upper ends of the first scissor plate (1) and the second scissor plate (2). The upper end of the lifting plate (8) is provided with a lifting hole.

3. The hydraulic support shaft lifting fixture according to claim 2, characterized in that, The lifting plate (8) and the first scissor plate (1) are single-layer structures, while the connecting plate (9) and the second scissor plate (2) are double-layer structures. One side of the lifting plate (8) is located between the double-layer structures at the upper end of the connecting plate (9) and is connected through a pin. The upper end of the first scissor plate (1) is located between the double-layer structures at the lower end of the connecting plate (9) and is connected through a pin. The middle part of the first scissor plate (1) is located between the double-layer structures of the second scissor plate (2) and is connected through a pin. The lower end of the lifting plate (8) is located between the double-layer structures at the upper end of the second scissor plate (2) and is connected through a pin.

4. The hydraulic support shaft lifting fixture according to claim 3, characterized in that, The lifting plate (8) has a bend in the middle, and the upper end of the connecting plate (9) is connected to the bend of the lifting plate (8).

5. A hydraulic support shaft lifting fixture according to any one of claims 1 to 4, characterized in that, The lower ends of the middle jaws (5) of the first clamping jaw (3) and the second clamping jaw (4) are respectively provided with a groove (10) and a protrusion (11). When the first clamping jaw (3) and the second clamping jaw (4) are brought together, the protrusion (11) can be inserted into the groove (10).

6. The hydraulic support shaft lifting fixture according to claim 5, characterized in that, Each side gripper (6) is connected to the corresponding middle gripper (5) by at least two crossbars (7), the two ends of which are connected to the side of the middle gripper (5) and the side of the side gripper (6), respectively.

Images