hoisting equipment

CN224633106UActive Publication Date: 2026-08-14ZHONGSHAN GSI MARINE ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-10
Publication Date
2026-08-14

AI Technical Summary

Technical Problem

[0004]但现如今,集装箱吊装机在吊装的过程中会出现较大抖动,进而可能会出现集装箱掉落的风险

Benefits of technology

[0019]本申请提供了一种吊装装置,吊装装置包括:支撑部件、导向部件和张紧机构,支撑部件作为基础框架,导向部件确保绳索路径精准,张紧机构动态调节张力,各部件功能明确且协同工作,提升整体可靠性。支撑部件一端设置收纳释放部件,实现绳索的快速收放,收纳释放部件用于收纳或者释放绳索,调整绳索的长度,避免绳索杂乱,降低缠绕风险,导向部件包括导向杆和导向轮,导向杆的一端设置于支撑部件,导向杆固定导向轮的空间位置,确保绳索始终沿预定路径运动,减少偏摆,另一端设置导向轮,导向轮将滑动摩擦转为滚动摩擦,降低绳索磨损。张紧机构包括张紧部件和张紧环,张紧部件一端设置于支撑部件,另一端与张紧环连接,张紧部件带动张紧环朝着垂直于支撑部件高度的方向移动,张紧环作为绳索的动态约束点,通过横向位移调整绳索角度,抑制吊装物晃动,提升定位精度。收纳释放部件释放的所述绳索依次抵接于导向轮、贯穿张紧环后与目标物件连接,解决了传统吊装中绳索易摆动、张力不均、效率低下等痛点。

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Abstract

This application relates to a lifting device, which includes a support component, a guide component, and a tensioning mechanism. One end of the support component has a receiving and releasing component for receiving or releasing the rope and adjusting its length. The guide component includes a guide rod and a guide wheel. One end of the guide rod is attached to the support component, fixing the spatial position of the guide wheel to ensure the rope always moves along a predetermined path and reduces sway. The other end has a guide wheel that converts sliding friction into rolling friction, reducing rope wear. The tensioning mechanism includes a tensioning component and a tensioning ring. One end of the tensioning component is attached to the support component, and the other end is connected to the tensioning ring. The tensioning component drives the tensioning ring to move in a direction perpendicular to the height of the support component, and the tensioning ring serves as a dynamic constraint point for the rope. The rope released by the receiving and releasing component sequentially abuts against the guide wheel, passes through the tensioning ring, and connects to the target object, solving the problems of rope swaying, uneven tension, and low efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of ship hoisting technology, and more specifically, to a hoisting device. Background Technology

[0002] Currently, containers can be used to transport packaged or unpackaged goods. The greatest success of containers lies in the standardization of their products and the resulting transportation system. This standardization enables a massive container weighing tens of tons to be transported, and on this basis, a global logistics system integrating ships, ports, shipping routes, highways, transfer stations, bridges, tunnels, and multimodal transport is gradually being realized. Therefore, there is a large demand for container cranes.

[0003] Most container cranes have an automatic centering function, which uses sensors (such as laser sensors or mechanical limit switches) to detect the relative position of the spreader and the container, thereby performing the lifting.

[0004] However, nowadays, container cranes may experience significant vibrations during the lifting process, which could lead to the risk of containers falling off.

[0005] Based on the above situation, there is an urgent need to seek automated welding to improve construction quality and efficiency. Utility Model Content

[0006] This application provides a lifting device that can stably lift and transport containers, preventing them from detaching and falling.

[0007] This application provides a hoisting device, comprising: a support component with a receiving and releasing component at one end, the receiving and releasing component being used to receive or release a rope; a guide component including a guide rod and a guide wheel, one end of the guide rod being disposed on the support component and the other end being disposed on the guide wheel; and a tensioning mechanism including a tensioning component and a tensioning ring, one end of the tensioning component being disposed on the support component and the other end being connected to the tensioning ring, the tensioning component driving the tensioning ring to move in a direction perpendicular to the height of the support component; wherein the rope released by the receiving and releasing component sequentially abuts against the guide wheel, passes through the tensioning ring, and is connected to the target object.

[0008] In some optional embodiments, the support component further includes a base and a support rod, wherein the base and the storage and release component are respectively disposed at two ends opposite to each other in the height direction of the support rod.

[0009] In some alternative embodiments, a slot is provided at the end of the support rod away from the base, and the storage and release component is disposed in the slot and is rotatable relative to the support rod.

[0010] In some optional embodiments, the storage and release component includes a rotating wheel, a first rotating shaft, and a first driving component. The first rotating shaft connects the rotating wheel and the support rod, and the first driving component is disposed on the support rod, thereby driving the first rotating shaft to rotate.

[0011] In some optional embodiments, the guide component further includes a telescopic rod connected to both the guide rod and the support rod, the telescopic rod driving the guide rod to rotate around the support rod to adjust the angle between the guide rod and the support rod.

[0012] In some optional embodiments, the guide component further includes a second rotating shaft, the support rod includes a second slot, the second rotating shaft is disposed in the second slot, and the end of the guide rod away from the guide wheel is connected to the second rotating shaft.

[0013] In some alternative embodiments, the tensioning component includes a second driving component and a transmission component. The transmission component includes a rack assembly and a gear assembly, the gear assembly and the rack assembly meshing together. The end of the rack assembly is fixed to the tensioning ring, and the second driving component drives the gear assembly to rotate.

[0014] In some optional embodiments, the second drive component includes a rotating base, an electric push rod, and a turntable. The rotating base is disposed on the support rod, the electric push rod connects the rotating base and the turntable, and the turntable drives the gear assembly to rotate.

[0015] In some alternative embodiments, a lifting component is also included, which is disposed on the rope and connected to the target object.

[0016] In some optional embodiments, the lifting component includes a first pressure plate, a scissor lift, a second pressure plate, and a clamping component. The scissor lift is disposed between the first pressure plate and the second pressure plate and is slidably connected to the second pressure plate. The clamping component includes a first clamping plate and a second clamping plate, which are slidably connected to the second pressure plate, respectively.

[0017] In some optional embodiments, the lifting component further includes a fixing sleeve and a fixing rod, with a first clamping plate and a second clamping plate respectively provided with one of the fixing sleeve or the fixing rod, and the target object provided with the other, and the fixing sleeve and the fixing rod matching.

[0018] Compared with the prior art, this utility model has the following technical advantages:

[0019] This application provides a lifting device, comprising: a support component, a guide component, and a tensioning mechanism. The support component serves as the basic frame, the guide component ensures precise rope path, and the tensioning mechanism dynamically adjusts tension. Each component has a clearly defined function and works collaboratively to improve overall reliability. A storage and release component is installed at one end of the support component to enable rapid rope storage and release. This component stores or releases the rope, adjusts its length, prevents tangling, and reduces the risk of entanglement. The guide component includes a guide rod and a guide wheel. One end of the guide rod is attached to the support component, fixing the spatial position of the guide wheel to ensure the rope always moves along a predetermined path, reducing sway. The other end is equipped with a guide wheel, which converts sliding friction into rolling friction, reducing rope wear. The tensioning mechanism includes a tensioning component and a tensioning ring. One end of the tensioning component is attached to the support component, and the other end is connected to the tensioning ring. The tensioning component drives the tensioning ring to move in a direction perpendicular to the height of the support component. The tensioning ring acts as a dynamic constraint point for the rope, adjusting the rope angle through lateral displacement to suppress swaying of the lifted object and improve positioning accuracy. The rope released by the storage and release component abuts against the guide wheel in sequence, passes through the tensioning ring, and connects to the target object, solving the pain points of traditional hoisting such as easy rope swing, uneven tension, and low efficiency. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 A schematic diagram of a hoisting device provided in one embodiment of the present invention in a first direction;

[0022] Figure 2 for Figure 1 A schematic diagram of the hoisting device in the second direction of the provided embodiment;

[0023] Figure 3 for Figure 1 A schematic diagram of the hoisting device in a third-party direction according to the provided embodiment;

[0024] Figure 4 for Figure 1 An enlarged schematic diagram of the hoisting device at point A in the provided embodiment;

[0025] Figure 5 for Figure 1 An enlarged schematic diagram of the hoisting device at point B in the provided embodiment.

[0026] in, Figures 1-5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0027] 1-Supporting component; 11-Storage and release component; 111-Rotating wheel; 12-Base; 13-Support rod; 2-Guide component; 21-Guide rod; 22-Guide wheel; 23-Telescopic rod; 3-Tensioning mechanism; 31-Tensioning ring; 311-Annular limiting part; 312-Rod-shaped support part; 321-Rack assembly; 322-Gear assembly; 33-Rotating seat; 34-Electric push rod; 35-Turntable; 4-Lifting component; 41-First pressure plate; 42-Scissor lift; 43-Second pressure plate; 421-Slider; 422-Sliding groove; 44-First clamping plate; 45-Second clamping plate; 46-Fixing sleeve; 47-Fixing rod; a-Rope; b-Target object. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0030] Currently, containers can be used to transport packaged or unpackaged goods. The greatest success of containers lies in the standardization of their products and the resulting transportation system. This standardization enables a massive container weighing tens of tons to be transported, and on this basis, a global logistics system integrating ships, ports, shipping routes, highways, transfer stations, bridges, tunnels, and multimodal transport is gradually being realized. Therefore, there is a large demand for container cranes.

[0031] Most container cranes have an automatic centering function, which uses sensors (such as laser sensors or mechanical limit switches) to detect the relative position of the spreader and the container, thereby performing the lifting.

[0032] However, nowadays, container cranes may experience significant vibrations during the lifting process, which could lead to the risk of containers falling off.

[0033] Based on the above situation, there is an urgent need to seek automated welding to improve construction quality and efficiency.

[0034] The following is in conjunction with the accompanying drawings in the instruction manual. Figures 1-5 A detailed description of the hoisting equipment is provided.

[0035] This application provides a lifting device capable of stably lifting containers and preventing them from detaching and falling. The lifting device includes: a support component 1 with a receiving and releasing component 11 at one end for receiving or releasing ropes; a guide component 2 including a guide rod 21 and a guide wheel 22, with one end of the guide rod 21 attached to the support component 1 and the other end attached to the guide wheel 22; and a tensioning mechanism 3 including a tensioning component and a tensioning ring 31, with one end of the tensioning component attached to the support component 1 and the other end connected to the tensioning ring 31, the tensioning component driving the tensioning ring 31 to move in a direction perpendicular to the height of the support component 1; wherein the rope released by the receiving and releasing component 11 sequentially abuts against the guide wheel 22, passes through the tensioning ring 31, and connects to the target object.

[0036] Specifically, the hoisting device includes: a support component 1, a guide component 2, and a tensioning mechanism 3. The support component 1 serves as the basic frame, the guide component 2 ensures precise rope path, and the tensioning mechanism 3 dynamically adjusts the tension. Each component has a clear function and works collaboratively to improve overall reliability. A storage and release component 11 is installed at one end of the support component 1 to enable rapid rope storage and release. The storage and release component 11 is used to store or release the rope, adjust its length, prevent rope tangling, and reduce the risk of entanglement. The guide component 2 includes a guide rod 21 and a guide wheel 22. One end of the guide rod 21 is located on the support component 1, fixing the spatial position of the guide wheel 22 to ensure the rope always moves along the predetermined path and reduces sway. The other end is equipped with the guide wheel 22, which converts sliding friction into rolling friction, reducing rope wear. The tensioning mechanism 3 includes a tensioning component and a tensioning ring 31. One end of the tensioning component is mounted on the support component 1, and the other end is connected to the tensioning ring 31. The tensioning component drives the tensioning ring 31 to move in a direction perpendicular to the height of the support component 1. The tensioning ring 31 serves as a dynamic constraint point for the rope, adjusting the rope angle through lateral displacement to suppress the swaying of the hoisted object and improve positioning accuracy. The rope released by the receiving and releasing component 11 sequentially abuts against the guide wheel 22, passes through the tensioning ring 31, and connects to the target object, solving the pain points of easy rope swaying, uneven tension, and low efficiency in traditional hoisting.

[0037] In some optional embodiments, the support component 1 further includes a base 12 and a support rod 13, with the base 12 and the storage and release component 11 respectively disposed at opposite ends of the support rod 13 in the height direction.

[0038] Specifically, the base 12 is located at the bottom end of the support rod 13, directly contacting the ground or a fixed platform, while the storage and release component 11 is located at the top of the support rod 13, forming a low center of gravity and high load-bearing layout. The base 12, through increased contact area or counterweight design, significantly reduces the risk of overturning due to eccentric hoisting loads or wind. The support rod 13, acting as a vertical load-bearing column, directly transfers the hoisting load to the base 12, preventing lateral bending of the structure. The storage and release component 11, located at the top of the support rod 13, forms a top-down rope path with the guide component 2 and tensioning mechanism 3. High-position release allows the rope to hang naturally, reducing the probability of contact with surrounding structures. The gravity of the rope assists in rope retrieval, reducing the driving energy consumption of the storage and release component 11.

[0039] In some alternative embodiments, a slot is provided at the end of the support rod 13 away from the base 12, and the receiving and releasing component 11 is disposed in the slot and is rotatable relative to the support rod 13.

[0040] Specifically, the storage and release component 11 is installed via a slot, which allows for quick installation or replacement. The storage and release component 11 can rotate around the support rod 13. During hoisting, if the target object shifts position, the operator can rotate the storage and release component 11 to ensure the rope always moves along the optimal path, reducing friction and sway. The rope's exit direction is fixed by the tension pulley. Under lateral force, it is prone to friction with the guide pulley 22 or the edge of the tension ring 31. The rotatable design ensures the rope always extends naturally, reducing wear.

[0041] In some optional embodiments, the storage and release component 11 includes a rotating wheel 111, a first rotating shaft, and a first driving component. The first rotating shaft connects the rotating wheel 111 and the support rod 13, and the first driving component is disposed on the support rod 13. The first driving component drives the first rotating shaft to rotate.

[0042] Specifically, the first drive component can be selected from any one of the following: a rotating base 33, a motor, or a hydraulic motor. The first drive component directly drives the rotating wheel 111 to rotate via the first rotating shaft, and the rope can be quickly retracted and deployed by adjusting the speed of the first drive component. The drive component and the rotating wheel 111 are directly connected coaxially to transmit power, reducing energy loss.

[0043] In some optional embodiments, the guide component 2 further includes a telescopic rod 23, which is connected to the guide rod 21 and the support rod 13 respectively. The telescopic rod 23 drives the guide rod 21 to rotate around the support rod 13 to adjust the included angle between the guide rod 21 and the support rod 13.

[0044] Specifically, the telescopic rod 23 can be a hydraulic cylinder or an electric push rod 34. The telescopic movement of the telescopic rod 23 directly changes the angle between the guide rod 21 and the support rod 13, thereby supporting vertical hoisting and oblique traction. Adjusting the angle can change the wrap angle and tension direction of the rope when it passes through the guide wheel 22. The telescopic movement of the telescopic rod 23 directly changes the angle between the guide rod 21 and the support rod 13. By adjusting the angle, the contact surface between the rope and the guide wheel 22 is evenly stressed, avoiding single-point wear. The support rod 13, guide rod 21, and telescopic rod 23 form a stable triangular structure. Reducing the angle can shorten the horizontal distance between the guide wheel 22 and the hoisted object, reducing the sway amplitude caused by wind or inertia.

[0045] In some optional embodiments, the guide component 2 further includes a second rotating shaft, the support rod 13 includes a second slot, the second rotating shaft is disposed in the second slot, and the end of the guide rod 21 away from the guide wheel 22 is connected to the second rotating shaft.

[0046] Specifically, the guide rod 21 is hinged to the second slot of the support rod 13 via the second pivot, achieving the freedom of rotation around the axis. The telescopic rod 23 adjusts its length by telescoping, thereby changing the angle between the telescopic rod 23 and the guide rod 21, and thus adjusting the extension direction of the guide rod 21, thereby quickly adapting to hoisting requirements in different directions. The second pivot is located in the second slot. When the hoisted object swings or is subjected to wind, the pivot, located inside the slot, can disperse lateral stress and prevent local deformation of the support rod 13.

[0047] In some alternative embodiments, the tensioning component includes a second driving component and a transmission component 32. The transmission component includes a rack assembly 321 and a gear assembly 322. The gear assembly 322 and the rack assembly 321 mesh with each other. The end of the rack assembly 321 is fixed with a tensioning ring 31. The second driving component drives the gear assembly 322 to rotate.

[0048] Specifically, the second drive component drives the gear assembly 322 to rotate clockwise or counterclockwise. During the rotation of the gear assembly 322, the rack assembly 321 moves along a certain direction. During the movement of the rack assembly 321, the tensioning ring 31 moves, thereby pulling the rope and tensioning the rope.

[0049] Furthermore, the gear assembly 322 includes a first gear and a second gear, and the rack assembly 321 includes a first rack and a second rack. The first gear and the first rack mesh, and the second gear and the second rack mesh. The second drive component includes two motors. The first motor drives the first gear, and the second motor drives the second gear. The first gear and the second gear rotate synchronously, thereby causing the first rack and the second rack to move synchronously in a certain direction. The tension ring 31 also includes an annular limiting part 311 and a rod-shaped support part 312. The rod-shaped support part 312 is provided with a central hole, and the rack assembly 321 is at least partially disposed in the central hole, thereby supporting the rack assembly 321. The rack assembly 321 is fixedly connected to the rod-shaped support part 312. When the rack assembly 321 moves, it will drive the tension ring 31 to move.

[0050] In some optional embodiments, the second driving component includes a rotating seat 33, an electric push rod 34, and a turntable 35. The rotating seat 33 is disposed on the support rod 13, the electric push rod 34 connects the rotating seat 33 and the turntable 35, and the turntable 35 drives the gear assembly 322 to rotate.

[0051] Specifically, two sets of second drive components are provided. Each set of second drive components includes a rotating base 33, an electric push rod 34, and a turntable 35. The rotating base 33 is mounted on the support rod 13. The electric push rod 34 connects the rotating base 33 and the turntable 35. The turntable 35 drives the gear assembly 322 to rotate. The turntable 35 drives either the first gear or the second gear to rotate.

[0052] In some alternative embodiments, a lifting component 4 is also included, which is disposed on a rope and connected to the target object.

[0053] In some optional embodiments, the lifting component 4 includes a first pressure plate 41, a scissor lift 42, a second pressure plate 43, and a clamping component. The scissor lift 42 is disposed between the first pressure plate 41 and the second pressure plate 43 and is slidably connected to the second pressure plate 43. The clamping component includes a first clamping plate 44 and a second clamping plate 45, which are slidably connected to the second pressure plate 43, respectively.

[0054] Specifically, the second pressure plate 43 includes a sliding groove 422, inside which two sliders 421 are disposed. The scissor lift 42 is connected to the two sliders 421 respectively. Compression or extension of the scissor lift can drive the two sliders 421 to move relative to or towards each other. The two sliders 421 are connected to the first clamping plate 44 and the second clamping plate 45 respectively. When the scissor lift 42 is in the compressed state, it drives the two sliders 421 to move in opposite directions. At this time, the distance between the two sliders 421 is the greatest, and the distance between the first clamping plate 44 and the second clamping plate 45 is the greatest. When the scissor lift 42 is in the extended state, it drives the two sliders 421 to move towards each other. The target object is placed between the first clamping plate 44 and the second clamping plate 45, and the first clamping plate 44 and the second clamping plate 45 clamp the target object, thereby fixing the target object.

[0055] In some optional embodiments, the lifting component 4 further includes a fixing sleeve 46 and a fixing rod 47. The first clamping plate 44 and the second clamping plate 45 are respectively provided with one of the fixing sleeve 46 or the fixing rod 47, and the target object is provided with the other. The fixing sleeve 46 and the fixing rod 47 are matched so that the lifting component 4 can position the target object.

[0056] In this utility model, the term "multiple" refers to at least two or more, unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hoisting device, characterized in that include: The support component (1) has a storage and release component (11) at one end, which is used to store or release the rope (a). The guide component (2) includes a guide rod (21) and a guide wheel (22). One end of the guide rod (21) is disposed on the support component (1), and the other end is disposed on the guide wheel (22). The tensioning mechanism (3) includes a tensioning component and a tensioning ring (31). One end of the tensioning component is disposed on the support component (1), and the other end is connected to the tensioning ring (31). The tensioning component drives the tensioning ring (31) to move in a direction perpendicular to the height of the support component (1). The rope released by the receiving and releasing component (11) abuts against the guide wheel (22), passes through the tensioning ring (31), and connects to the target object.

2. The hoisting device of claim 1, wherein The support component (1) also includes a base (12) and a support rod (13), with the base (12) and the storage and release component (11) respectively disposed at opposite ends of the support rod (13) in the height direction.

3. The hoisting device of claim 2, wherein The support rod (13) has a slot at one end away from the base (12), and the storage and release component (11) is located in the slot and can rotate relative to the support rod (13).

4. The hoisting device of claim 3, wherein The storage and release component (11) includes a rotating wheel (111), a first rotating shaft and a first driving component. The first rotating shaft connects the rotating wheel (111) and the support rod (13). The first driving component is disposed on the support rod (13) and drives the first rotating shaft to rotate.

5. The hoisting device of claim 4, wherein The guide component also includes a telescopic rod (23), which is connected to the guide rod (21) and the support rod (13) respectively. The telescopic rod (23) drives the guide rod (21) to rotate around the support rod (13) to adjust the included angle between the guide rod (21) and the support rod (13).

6. The hoisting device of claim 5, wherein The guide component (2) further includes a second rotating shaft, the support rod (13) includes a second slot, the second rotating shaft is disposed in the second slot, and the end of the guide rod (21) away from the guide wheel (22) is connected to the second rotating shaft.

7. The hoisting device of claim 6, wherein The tensioning component includes a second driving component and a transmission component (32). The transmission component includes a rack assembly (321) and a gear assembly (322). The gear assembly (322) and the rack assembly (321) mesh. The tensioning ring (31) is fixed at the end of the rack assembly (321). The second driving component drives the gear assembly (322) to rotate.

8. The hoisting device of claim 7, wherein The second driving component includes a rotating seat (33), an electric push rod (34), and a turntable (35). The rotating seat (33) is disposed on the support rod (13). The electric push rod (34) connects the rotating seat (33) and the turntable (35). The turntable (35) drives the gear assembly (322) to rotate.

9. The hoisting device of claim 1, wherein, It also includes a lifting component (4), which is disposed on the rope (a) and connected to the target object.

10. The hoisting device of claim 9, wherein The lifting component (4) includes a first pressure plate (41), a scissor lift (42), a second pressure plate (43), and a clamping component. The scissor lift (42) is disposed between the first pressure plate (41) and the second pressure plate (43). The scissor lift (42) is slidably connected to the second pressure plate (43). The clamping component includes a first clamping plate (44) and a second clamping plate (45). The first clamping plate (44) and the second clamping plate (45) are slidably connected to the second pressure plate (43), respectively.