Lifting type stirring device
The design of the lifting stirring device solves the problems of poor stirring stability and high cost in traditional devices, and enables multiple stirring mechanisms to share a single lifting mechanism, thereby improving stirring stability and reducing costs.
Patent Information
- Application Number
- CN202422674355.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-11-04
AI Technical Summary
Traditional lifting-type mixing devices are prone to axial displacement during rotation, resulting in poor mixing stability. Furthermore, they require high production and assembly processes, as each mixing unit must be equipped with a lifting mechanism, leading to high costs.
The device employs a lifting and mixing mechanism, which includes a lifting mechanism, a fixed frame, and a mixing mechanism. Through the combined design of the driving component, the moving frame, the fixed component, and the base plate, the lifting and traction components are used to achieve stable lifting and rotation of the mixing mechanism. The fixed component provides an axial movement track to prevent the mixing mechanism from deviating radially. Multiple mixing mechanisms share a single lifting mechanism.
It improves mixing stability, reduces costs, facilitates loading, unloading and movement, and allows multiple mixing units to share a single lifting mechanism, ensuring thorough and safe mixing.
Smart Images
Figure CN223732549U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of stirring machines, in particular to a lifting type stirring device. BACKGROUND
[0002] The lime nitrogen has high alkalinity, in order to reduce the alkalinity and reuse the alkalinity, the lime nitrogen is put into the lime nitrogen pool for fully stirring and introducing the acidic desulfurization wastewater, so that the alkaline substances in the lime nitrogen are fully dissolved in water. When the local stirring of the equipment is insufficient, the lime nitrogen will solidify together, thereby affecting the normal rotation of the stirring mechanism, and even causing the motor to burn out. Therefore, the stirring mechanism fully stirs the lime nitrogen.
[0003] The conventional lifting type stirring device in the related art performs lifting type stirring in the lime nitrogen pool, and the conventional lifting type stirring device comprises a transmission mechanism such as a belt, a chain and a gear to realize the lifting of the stirring mechanism.
[0004] However, the conventional lifting type stirring device may produce axial deviation during rotation, has poor stirring stability, and has high production and assembly process requirements, that is, each stirring mechanism must be assembled with a set of lifting mechanism, and the cost is high. CONTENT OF THE INVENTION
[0005] In view of this, the present application provides a lifting type stirring device which can ensure that the stirring mechanism stably rotates and moves in the axial direction, prevent the stirring mechanism from deviating in the radial direction, improve the stirring stability, facilitate the loading and unloading and movement, and share one set of lifting mechanism by multiple stirring mechanisms, thereby reducing the cost.
[0006] Specifically, the technical scheme comprises the following:
[0007] The embodiment of the present application provides a lifting type stirring device, which is located above a stirring pool, and comprises a lifting mechanism, a fixed frame and a stirring mechanism, and further comprises a driving member, a moving frame, a moving platform, a fixing member and a bottom plate.
[0008] The lifting mechanism comprises a lifting member and a traction member, the upper end of the lifting member is detachably connected with the fixed frame, the lower end of the lifting member is connected with the upper end of the traction member, and the lower end of the traction member is detachably connected with the moving frame.
[0009] The moving frame is arranged on the inner side of the fixed frame, and the moving frame is fixed on the bottom plate.
[0010] The bottom plate is provided with a through hole, the central shaft of the driving member faces the through hole, and the lower end of the driving member and the moving frame are fixedly connected with the bottom plate.
[0011] The stirring mechanism is arranged on the inner side of the through hole and is rotatably connected with the driving member.
[0012] The fixing member comprises four fixing shafts, four linear bearings, four guide fixing plates and four fixing shaft sleeves, the fixing shafts are arranged around the outside of the driving member, the upper ends of the fixing shafts are fixed on the fixing frame, the linear bearings, the guide fixing plates and the fixing shaft sleeves are all sleeved on the fixing shafts, the lower ends of the fixing shaft sleeves are flush with the lower ends of the fixing shafts, the fixing shaft sleeves and the fixing shafts are both fixed on the fixing frame, the guide fixing plates are fixedly connected with the linear bearings, and the guide fixing plates are fixedly connected with the moving frame.
[0013] The moving platform is arranged above the fixing frame and is detachably connected with the lifting member, and is used to move the lifting mechanism.
[0014] In some embodiments, the traction member is an electric hoist chain, which is used to pull the moving frame.
[0015] In some embodiments, the lifting member is an electric hoist, which is used to lift the moving frame through the traction member, so that the moving frame drives the driving member, the stirring mechanism and the bottom plate to be lifted.
[0016] In some embodiments, the stirring mechanism comprises a stirring shaft and a paddle, the paddle is arranged at the lower end of the stirring shaft, and the stirring shaft is rotatably connected with the driving member.
[0017] In some embodiments, the driving member comprises a motor and a speed reducer, which is used to provide driving force for stirring of the stirring mechanism.
[0018] In some embodiments, the inner diameter of the linear bearing is the same as the outer diameter of the fixing shaft, the inner diameter of the fixing shaft sleeve is the same as the outer diameter of the fixing shaft, the length ratio of the linear bearing to the fixing shaft is 1:20~2:25, and the length ratio of the fixing shaft sleeve to the fixing shaft is 1:20~2:25.
[0019] In some embodiments, the upper end of the moving frame is provided with a lifting ring, which is used to be detachably connected with the lower end of the traction member.
[0020] In some embodiments, the guide fixing plate is a 90° bent L-shaped, the first part of the guide fixing plate parallel to the fixing shaft is fixedly connected with the moving frame, the second part of the guide fixing plate is perpendicular to the fixing shaft, the second part of the guide fixing plate is provided with a circular through hole, the inner diameter of the circular through hole is the same as the outer diameter of the linear bearing, the periphery of the circular through hole is provided with a plurality of bolt holes, and the second part of the guide fixing plate is fixedly connected with the linear bearing through the bolt holes.
[0021] In some embodiments, the upper end of the lifting member is detachably connected to the fixed frame by a bolt, and the upper end of the fixed shaft is fixed on the fixed frame by a bolt.
[0022] In some embodiments, the moving platform comprises a circular tube, a moving slider and a U-shaped clamp, one end of the lifting member is detachably connected to the moving slider, the other end of the moving slider is slidingly connected to the circular tube, the moving slider is used to drive the lifting member (11) to slide on the circular tube, the circular tube has positioning holes, and the circular tube is used to provide a moving track for the lifting member (11), and the U-shaped clamp is used to fix the moving slider at the positioning holes of the circular tube.
[0023] The technical scheme provided by the embodiments has at least the following beneficial effects:
[0024] The embodiment of the present application provides a lifting type stirring device, which is located above a stirring pool and comprises a lifting mechanism, a fixed frame and a stirring mechanism, and further comprises a driving member, a moving frame, a moving platform, a fixing member and a bottom plate. In use, the lifting member in the lifting mechanism lifts the moving frame, the driving member, the stirring mechanism and the bottom plate to a suitable position of the stirring pool through the traction member, and adjusts the lifting during the stirring process. The fixing shaft in the fixing member provides an axial moving track for the moving support and the linear bearing. The driving member drives the stirring mechanism to rotate, so that the lime nitrogen in the stirring pool is stirred in a lifting manner, and each part of the lime nitrogen in the stirring pool can be fully stirred to prevent the lime nitrogen from solidifying. The linear bearing is fixed on the moving frame by the guide fixing plate, so that the moving frame drives the guide fixing plate and the linear bearing to move up and down along the axial direction of the fixing shaft when the moving frame moves. The fixing shaft is fixed on the fixed frame by the fixing shaft sleeve, so that the stirring mechanism stably rotates and moves in the axial direction. The fixing shaft sleeve and the guide fixing plate can effectively offset the deviation and reaction force of the stirring mechanism in the radial direction, so as to prevent the stirring mechanism from deviating in the radial direction and improve the stirring stability. The upper end of the lifting member is detachably connected to the fixed frame, and the lower end of the traction member is detachably connected to the moving frame, so that the lifting mechanism is convenient to assemble and disassemble. The moving platform is detachably connected to the lifting member, and can be used to move the lifting mechanism, so that a plurality of stirring mechanisms can share one set of lifting mechanism, thereby reducing the cost. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0026] Figure 1This is a schematic diagram of the structure of a lifting stirring device provided in an embodiment of this application;
[0027] Figure 2 This is another structural schematic diagram of a lifting stirring device provided in an embodiment of this application.
[0028] The reference numerals in the figure are respectively:
[0029] 1-Lifting mechanism, 11-Lifting component, 12-Traction component, 2-Fixed frame, 3-Mixing mechanism, 31-Mixing shaft, 32-Blade, 4-Drive component, 41-Motor, 42-Gear motor, 5-Mobile frame, 51-Lifting ring, 6-Mobile platform, 7-Fixed component, 71-Fixed shaft, 72-Linear bearing, 73-Guide fixing plate, 74-Fixed bushing, 8-Base plate. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] This application provides a lifting stirring device, such as... Figure 1 and Figure 2 As shown, the device is located above the mixing tank and includes a lifting mechanism 1, a fixed frame 2 and a mixing mechanism 3, as well as a drive component 4, a movable frame 5, a movable platform 6, a fixing component 7 and a base plate 8.
[0032] The lifting mechanism 1 includes a lifting component 11 and a traction component 12. The upper end of the lifting component 11 is detachably connected to the fixed frame 2, the lower end of the lifting component 11 is connected to the upper end of the traction component 12, and the lower end of the traction component 12 is detachably connected to the mobile frame 5.
[0033] The mobile frame 5 is located inside the fixed frame 2 and is fixed to the base plate 8.
[0034] The base plate 8 has a through hole in the center, the central shaft of the drive component 4 is directly opposite the through hole, and the lower end of the drive component 4 and the moving frame 5 are both fixedly connected to the base plate 8.
[0035] The stirring mechanism 3 is located inside the through hole and is rotatably connected to the driving component 4.
[0036] The fixing member 7 comprises four fixing shafts 71, four linear bearings 72, four guide fixing plates 73 and four fixing shaft sleeves 74. The fixing shafts 71 are arranged around the outer side of the driving member 4, the upper ends of the fixing shafts 71 are fixed on the fixed frame 2, the linear bearings 72, the guide fixing plates 73 and the fixing shaft sleeves 74 are sleeved on the fixing shafts 71, the lower ends of the fixing shaft sleeves 74 are flush with the lower ends of the fixing shafts 71, the fixing shaft sleeves 74 and the fixing shafts 71 are fixed on the fixed frame 2, the guide fixing plates 73 are fixedly connected with the linear bearings 72, and the guide fixing plates 73 are fixedly connected with the moving frame 5.
[0037] The moving platform 6 is arranged above the fixed frame 2 and is detachably connected with the lifting member 11, and is used to move the lifting mechanism 1.
[0038] Referring to Figure 1 and Figure 2 In use, the lifting member 11 in the lifting mechanism 1 lifts the moving frame 5, the driving member 4, the stirring mechanism 3 and the bottom plate 8 to a suitable position of the stirring pool through the traction member 12, the fixing shafts 71 in the fixing member 7 provide tracks for the axial movement of the moving frame 5 and the linear bearings 72, the driving member 4 drives the stirring mechanism 3 to rotate, so that the lime nitrogen in the stirring pool is stirred in a lifting mode, so that the lime nitrogen in each part of the stirring pool can be fully stirred, and the lime nitrogen is prevented from solidifying; the guide fixing plates 73 fix the linear bearings 72 on the moving frame 5, so that the moving frame 5 drives the guide fixing plates 73 and the linear bearings 72 to move up and down along the axial direction of the fixing shafts 71 when the moving frame 5 moves, the fixing shaft sleeves 74 fix the fixing shafts 71 on the fixed frame 2, so that the stirring mechanism 3 stably rotates and moves in the axial direction, the fixing shaft sleeves 74 and the guide fixing plates 73 can effectively offset the deviation and reaction force of the stirring mechanism 3 in the radial direction, so that the stirring mechanism 3 is prevented from deviating in the radial direction, and the stirring stability is improved; the upper end of the lifting member 11 is detachably connected with the fixed frame 2, and the lower end of the traction member 12 is detachably connected with the moving frame 5, so that the lifting mechanism 1 is convenient to assemble and disassemble, the moving platform 6 is detachably connected with the lifting member 11, and can be used to move the lifting mechanism 1, so that a plurality of stirring mechanisms can share one set of lifting mechanism, and the cost is reduced.
[0039] The structure of the lifting type stirring device provided by the embodiment of the application will be described in more detail as follows:
[0040] The lifting mechanism 1 is a lifting core component of the lifting type stirring device provided by the embodiment of the application. The lifting member 11 in the lifting mechanism 1 lifts the moving frame 5, the driving member 4, the stirring mechanism 3 and the bottom plate 8 to a suitable position of the stirring pool through the traction member 12, and adjusts the lifting during the stirring process, so that the lime nitrogen in the stirring pool is stirred in a lifting mode, so that the lime nitrogen in each part of the stirring pool can be fully stirred, and the lime nitrogen is prevented from solidifying.
[0041] In some embodiments, the traction member 12 is an electric hoist chain for traction of the moving frame 5.
[0042] In some embodiments, the lifting member 11 can be an electric hoist for lifting the moving frame 5 through the traction member 12, so that the moving frame 5 drives the driving member 4, the stirring mechanism 3 and the bottom plate 8 to lift.
[0043] The stirring mechanism 3 is an execution component for stirring in the lifting type stirring device provided by the embodiments of the present application. The stirring mechanism 3 can include a stirring shaft 31 and a paddle 32. The paddle 32 is arranged at the lower end of the stirring shaft 31. The stirring shaft 31 is rotatably connected with the driving member 4, so as to cooperate with the lifting mechanism 1 to lift and stir the lime nitrogen in the stirring pool.
[0044] Since the lime nitrogen is corrosive, in some embodiments, the material of the stirring shaft 31 and the paddle 32 can be carbon steel externally lined with polytetrafluoroethylene.
[0045] The driving member 4 is a component for providing driving force for the stirring mechanism 3 in the lifting type stirring device provided by the embodiments of the present application. The driving member 4 includes a motor 41 and a speed reducer 42 for providing driving force for stirring of the stirring mechanism 3. Through cooperation of the motor 41 and the speed reducer 42, the stirring mechanism 3 stirs the lime nitrogen at a certain stirring speed.
[0046] The fixed member 7 and the bottom plate 8 are key components for providing fixing function for the driving member 4 and the stirring mechanism 3 in the lifting type stirring device provided by the embodiments of the present application. The upper end of the fixed shaft 71 is fixed on the fixed frame 2, and the lower end thereof is fixed with the fixed shaft sleeve 74 on the fixed frame 2. The lower end of the driving member 4 and the moving frame 5 are fixedly connected with the bottom plate 8. The guide fixed plate 73 fixes the linear bearing 72 on the moving frame 5, so that the moving frame 5 drives the guide fixed plate 73 and the linear bearing 72 to move up and down along the axial direction of the fixed shaft 71 when the moving frame 5 moves. The fixed shaft 71 provides a track for axial movement of the moving frame 5 and the linear bearing 72. The fixed shaft sleeve 74 fixes the fixed shaft 71 on the fixed frame 2, so as to ensure that the stirring mechanism 3 stably rotates and moves in the axial direction. The fixed shaft sleeve 74 and the guide fixed plate 73 can effectively offset the deviation and reaction force of the stirring mechanism 3 in the radial direction, so as to prevent the stirring mechanism 3 from deviating in the radial direction and improve stirring stability.
[0047] In some embodiments, the inner diameter of the linear bearing 72 is the same as the outer diameter of the fixed shaft 71, the inner diameter of the fixed shaft sleeve 74 is the same as the outer diameter of the fixed shaft 71, and the length ratio of the linear bearing 72 to the fixed shaft 71 is 1:20-2:25, and the length ratio of the fixed shaft sleeve 74 to the fixed shaft 71 is 1:20-2:25. In this way, the strength of the linear bearing 72 and the fixed shaft sleeve 74 can be enhanced, ensuring better fixing effect to fully offset the offset and reaction force of the stirring mechanism 3 in the radial direction and have a buffering protection effect on the fixed shaft 71.
[0048] In some embodiments, the length ratio of the linear bearing 72 to the fixed shaft 71 can be 1:20 or 2:25, and the length ratio of the fixed shaft sleeve 74 to the fixed shaft 71 can be 1:20 or 2:25. The greater the length ratio, the better the fixing effect, and the cost will also increase accordingly.
[0049] In some embodiments, referring to Figure 2 , the guide fixed plate 73 is 90° bent L-shaped, the first part of the guide fixed plate 73 is fixedly connected with the moving frame 5 in parallel to the fixed shaft 71, the second part of the guide fixed plate 73 is perpendicular to the fixed shaft 71, the second part of the guide fixed plate 73 has a circular through hole, the inner diameter of the circular through hole is the same as the outer diameter of the linear bearing 72, and the periphery of the circular through hole is provided with a plurality of bolt holes for fixedly connecting the second part of the guide fixed plate 73 with the linear bearing 72 through bolts. In this way, the linear bearing 72 and the moving frame 5 can be fixed tightly, so as to ensure that the linear bearing 72 drives the moving frame 5 to stably move axially along the fixed shaft 71.
[0050] The production and assembly process of the conventional lifting type stirring device in the related art requires high, and each stirring mechanism must be equipped with a set of lifting mechanism, which increases the cost. In some embodiments, the upper end of the lifting piece 11 is detachably connected with the fixed frame 2 through bolts. In some embodiments, the upper end of the moving frame 5 has a lifting ring 51 for detachable connection with the lower end of the traction piece 12. In this way, the lifting mechanism 1 can provide lifting function for other stirring mechanisms, so that multiple stirring mechanisms can share a set of lifting mechanism, greatly saving the cost.
[0051] In order to facilitate the movement and disassembly of the lifting mechanism 1, a moving platform 6 is arranged above the fixed frame 2, the moving platform 6 is detachably connected with the lifting piece 11, and the moving platform 6 includes a circular pipe, a moving block and a U-shaped clamp (not shown in the figure). The lifting piece 11 is detachably connected with one end of the moving block, the other end of the moving block is slidably connected with the circular pipe, the moving block is used to drive the lifting piece 11 to slide on the circular pipe, the circular pipe has positioning holes for providing a moving track for the lifting piece 11, and the U-shaped clamp is used to fix the moving block at the positioning holes of the circular pipe.
[0052] Thus, when the lifting mechanism 1 needs to be moved, the lifting mechanism 1 is disassembled from the fixed frame 2 and the moving frame 5, and is then loaded on the moving slider of the moving platform 6. The moving slider can drive the lifting mechanism 1 to slide to above the other stirring mechanism. The U-shaped clamps are fixed on the positioning holes of the circular tube, the lifting mechanism 1 is disassembled from the moving slider, and is then assembled on the other stirring mechanism, so that the lifting mechanism 1 can be moved and assembled on the other stirring mechanism to perform lifting work.
[0053] In some embodiments, the upper end of the fixed shaft 71 is bolted to the fixed frame 2.
[0054] In some embodiments, the upper end of the fixed shaft 71 is bolted to the fixed frame 2, and the fixed shaft 71 and the fixed shaft sleeve 74 can also be welded to the fixed frame 2.
[0055] In the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.
[0056] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The present application is intended to cover any variations, uses or adaptive changes of this application following the general principles thereof and including those expressly stated or implied herein. The specification and examples are considered exemplary only.
[0057] It should be understood that the present application is not limited to the precise structures described above and illustrated in the drawings and that various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the claims appended hereto.
Claims
1. A lifting type stirring device, said device being located above a stirring basin, comprising a lifting mechanism (1), a stationary frame (2) and a stirring mechanism (3), characterized in that, It also includes driving piece (4), moving frame (5), moving platform (6), fixed piece (7) and bottom plate (8); The lifting mechanism (1) includes lifting piece (11) and traction piece (12), the upper end of the lifting piece (11) is detachably connected with the fixed frame (2), the lower end of the lifting piece (11) is connected with the upper end of the traction piece (12), and the lower end of the traction piece (12) is detachably connected with the moving frame (5); The moving frame (5) is arranged on the inner side of the fixed frame (2), and the moving frame (5) is fixed on the bottom plate (8); The bottom plate (8) is provided with a through hole in the center, the central axis of the driving piece (4) is opposite to the through hole, and the lower end of the driving piece (4) and the moving frame (5) are fixedly connected with the bottom plate (8); The stirring mechanism (3) is arranged on the inner side of the through hole and is rotatably connected with the driving piece (4); The fixed piece (7) includes four fixed shafts (71), four linear bearings (72), four guide fixed plates (73) and four fixed shaft sleeves (74), the fixed shafts (71) are arranged on the outer side of the driving piece (4), the upper ends of the fixed shafts (71) are fixed on the fixed frame (2), the linear bearings (72), the guide fixed plates (73) and the fixed shaft sleeves (74) are sleeved on the fixed shafts (71), the lower ends of the fixed shaft sleeves (74) are flush with the lower ends of the fixed shafts (71), the fixed shaft sleeves (74) and the fixed shafts (71) are fixed on the fixed frame (2), the guide fixed plates (73) are fixedly connected with the linear bearings (72), and the guide fixed plates (73) are fixedly connected with the moving frame (5); The moving platform (6) is arranged above the fixed frame (2) and is detachably connected with the lifting piece (11) and is used for moving the lifting mechanism (1).
2. The lift mixer of claim 1, wherein, The traction piece (12) is an electric hoist chain and is used for pulling the moving frame (5).
3. The lift mixer of claim 1, wherein, The lifting piece (11) is an electric hoist, which is used for lifting the moving frame (5) through the traction piece (12), so that the moving frame (5) drives the driving piece (4), the stirring mechanism (3) and the bottom plate (8) to lift.
4. The lift mixer of claim 1, wherein, The stirring mechanism (3) includes a stirring shaft (31) and a paddle (32), the paddle (32) is arranged on the lower end of the stirring shaft (31), and the stirring shaft (31) is rotatably connected with the driving piece (4).
5. The lift mixer of claim 1, wherein, The driving piece (4) includes a motor (41) and a speed reducer (42) and is used for providing driving force for stirring of the stirring mechanism (3).
6. The lift-mixer of claim 1 wherein, The inner diameter of the linear bearing (72) is the same as the outer diameter of the fixed shaft (71), the inner diameter of the fixed shaft sleeve (74) is the same as the outer diameter of the fixed shaft (71), the length ratio of the linear bearing (72) to the fixed shaft (71) is 1:20~2:25, and the length ratio of the fixed shaft sleeve (74) to the fixed shaft (71) is 1:20~2:
25.
7. The lift-mixer of claim 1 wherein, The upper end of the moving frame (5) is provided with a lifting ring (51) for detachable connection with the lower end of the traction member (12).
8. The lift-mixer of claim 1 wherein, The guide fixing plate (73) is 90° bended L-shaped, the first part of the guide fixing plate (73) is fixedly connected with the moving frame (5) in parallel to the fixed shaft (71), the second part of the guide fixing plate (73) is perpendicular to the fixed shaft (71), the second part of the guide fixing plate (73) is provided with a circular through hole, the inner diameter of the circular through hole is same as the outer diameter of the linear bearing (72), the periphery of the circular through hole is provided with a plurality of bolt holes, the second part of the guide fixing plate (73) is fixedly connected with the linear bearing (72) through the bolt holes.
9. The lift-mixer of claim 1 wherein, The upper end of the lifting member (11) is detachably connected with the fixed frame (2) through a bolt, and the upper end of the fixed shaft (71) is fixed on the fixed frame (2) through a bolt.
10. The lift-mixer of claim 1 wherein, The moving platform (6) comprises a circular tube, a moving slider and a U-shaped clamp, one end of the lifting member (11) is detachably connected with the moving slider, the other end of the moving slider is slidingly connected with the circular tube, the moving slider is used for driving the lifting member (11) to slide on the circular tube, the circular tube is provided with a positioning hole, the circular tube is used for providing a moving track for the lifting member (11), and the U-shaped clamp is used for fixing the moving slider at the positioning hole of the circular tube.