Axle box body withdrawing tool

Abstract

The utility model provides an axle box withdrawing tool, which belongs to the technical field of railway vehicles and comprises a frame, a linear driving mechanism, a push-pull plate, a transition plate and a plurality of fasteners. Walking wheels are arranged at the lower end of the frame, the linear driving mechanism is fixedly mounted on the frame and is horizontally arranged, the transition plate is fixedly mounted on the linear driving mechanism, and a through hole and a plurality of first connecting holes are formed in the transition plate; the push-pull plates are fixedly mounted at one ends of the transition plates, and the transition plates are arranged at intervals; an accommodating cavity is formed between the push-pull plate and the transition plate; a plurality of second connecting holes are formed in the push-pull plate; an upward extending open slot is formed in the lower end of the push-pull plate; the fasteners penetrate through the corresponding first connecting holes and the second connecting holes and are used for fixedly connecting the push-pull plate and the transition plate. According to the axle box body withdrawing tool, damage to the axle box body and the rotating shaft can be effectively reduced or even eliminated, operation is more convenient, and harm to workers cannot be caused.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail vehicles, and more specifically relates to an axle box body disassembly tool. Background Art

[0002] The removal of the axle box is an important part of the repair and maintenance of rail vehicles, which involves removing the bearings in the axle box from the journal for inspection or replacement. This process requires the use of special removal devices and technologies to ensure that the bearings can be safely and effectively detached from the journal while avoiding damage to the journal and bearings. At present, there is no special axle box removal equipment for removing the axle box. The axle box can only be removed by manual knocking or other non-special equipment is used to remove and disassemble the axle box, which makes it easy for the axle box to be bumped and damaged during the removal process, resulting in the axle box or the shaft being unable to continue to be used; and when using multiple tools or non-special equipment to remove the axle box, the operation is not convenient and it is easy to cause accidental injuries to the staff. Utility Model Content

[0003] The utility model aims to provide an axle box disassembly tool to solve the technical problems in the prior art that the axle box is easily bumped or damaged during the disassembly process, which makes the axle box or the rotating shaft unable to be used further and easily causes accidental injuries to the staff.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an axle box disassembly tool, including:

[0005] A frame, with travel wheels at the lower end;

[0006] A linear drive mechanism is fixedly mounted on the frame and arranged horizontally; the free end of the linear drive mechanism is used to act on the rotating shaft of the axle box body;

[0007] A transition plate is fixedly mounted on the linear drive mechanism and is located on a side of the linear drive mechanism close to the shaft box; the transition plate is provided with a through hole for the free end of the linear drive mechanism to pass through and a plurality of first connection holes;

[0008] A push-pull plate is fixedly mounted on one end of the transition plate, and the transition plates are arranged at intervals; a receiving cavity for receiving the shaft box is formed between the push-pull plate and the transition plate; a plurality of second connection holes corresponding to the first connection holes are provided on the push-pull plate; an open groove extending upward and used for receiving the shaft box is provided at the lower end of the push-pull plate;

[0009] There are multiple fasteners, which correspond one-to-one to the multiple first connecting holes. The fasteners pass through the corresponding first connecting holes and the second connecting holes to fix the push-pull plate and the transition plate.

[0010] In a possible implementation, the push-pull plate is an inverted U-shaped plate, and the plurality of second connection holes are divided into two groups and are respectively located on both sides of the open groove; the plurality of second connection holes in the same group are arranged vertically.

[0011] In a possible implementation, the linear drive mechanism is provided with two symmetrically arranged pads, each of which is provided with a first mounting hole; the transition plate is provided with a second mounting hole located between the through hole and the first connecting hole, and the first mounting hole corresponds to the second mounting hole one by one; the transition plate is docked with the two pads, and bolts are used to pass through the first mounting hole and the second mounting hole to fix the transition plate and the pad.

[0012] In a possible implementation, the fastener includes a screw rod and nuts installed at both ends of the screw rod; and the linear drive mechanism is an oil cylinder.

[0013] In a possible implementation, the push-pull plate is suspended outside the frame, and a counterweight block for balancing the weight of the push-pull plate is provided on the frame.

[0014] In a possible implementation manner, the free end of the linear drive mechanism is provided with a threaded segment and a contact end head threadedly connected to the threaded segment.

[0015] In a possible implementation, threaded holes for installing lifting rings are provided on both the transition plate and the push-pull plate.

[0016] In a possible implementation, the axle box removal tool further includes a bearing structure installed at the lower end of the push-pull plate, one end of the bearing structure is detachably connected to the axle box, and the other end extends toward the transition plate.

[0017] In a possible implementation, the lower end of the push-pull plate is provided with two screw holes and two guide holes, and the two screw holes and the two guide holes are respectively installed on both sides of the opening groove; the bearing structure includes:

[0018] The bearing plate has two through holes and two guide rods arranged at intervals at one end of the upper side, the through holes correspond to the screw holes, and the guide rods correspond to the guide holes; the bearing plate is butt-jointed with the lower end of the push-pull plate;

[0019] A shielding plate is fixedly mounted on the other end of the bearing plate and extends upward;

[0020] There are multiple bolts; the bolts pass through the through holes and are threadedly connected to the corresponding screw holes, and are locked and fixed using nuts.

[0021] In a possible implementation, a lifting mechanism is further provided on the frame, and the linear drive mechanism is fixedly mounted on the lifting mechanism.

[0022] The beneficial effect of the axle box disassembly tool provided by the utility model is that compared with the prior art, the axle box disassembly tool of the utility model, when in use, uses the walking wheel to move the frame and the linear drive mechanism to one side of the wheelset and the axle box, and the linear drive mechanism corresponds to the axle box and the rotating shaft; the transition plate is fixedly installed on the linear drive mechanism, and the through hole on the transition plate corresponds to the free end of the linear drive mechanism, and the free end of the linear drive mechanism passes through the through hole; then the push-pull plate installed in the gap between the wheelset and the axle box is controlled to move from top to bottom, the open groove is adapted to the rotating shaft, and the push-pull plate corresponds to the axle box; a plurality of fasteners are respectively inserted into the plurality of first connecting holes and the corresponding second connecting holes to fix the push-pull plate and the transition plate, and the axle box is located in the accommodating cavity between the push-pull plate and the transition plate. Start the linear drive mechanism to move its free end toward the rotating shaft in the through hole, and promote relative movement between the rotating shaft and the shaft box, thereby removing the axial direction from the rotating shaft. In this way, there is no need to use manual knocking, which can effectively reduce or even eliminate damage to the shaft box and the rotating shaft, and the operation is more convenient without causing harm to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0024] Figure 1 A schematic diagram of the structure of the axle box disassembly tool provided in an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the structure of a push-pull plate provided in an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the structure of a transition plate provided in an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of the connection between the free end and the contact end of the linear drive mechanism provided in an embodiment of the utility model;

[0028] Figure 5 A front view of the bearing structure provided by an embodiment of the utility model;

[0029] Figure 6A top view of the bearing structure provided in an embodiment of the utility model.

[0030] Among them, the reference numerals in the figure are:

[0031] 1. Frame; 11. Traveling wheel; 12. Counterweight; 13. Lifting mechanism; 14. Handrail; 2. Linear drive mechanism; 21. Pad; 22. Threaded section; 23. Contact end; 3. Transition plate; 31. Through hole; 32. First connecting hole; 33. Second mounting hole; 34. Threaded hole; 4. Push-pull plate; 41. Accommodating cavity; 42. Second connecting hole; 43. Open groove; 44. Screw hole; 45. Guide hole; 5. Fastener; 51. Screw rod; 52. Nut; 6. Bearing structure; 61. Bearing plate; 62. Shielding plate; 63. Bolt; 64. Through hole; 65. Guide rod. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] See also Figures 1 to 3, the axle box disassembly tool provided by the utility model is now described. An axle box disassembly tool comprises a frame 1, a linear drive mechanism 2, a push-pull plate 4, a transition plate 3 and a fastener 5; a walking wheel 11 is provided at the lower end of the frame 1; the linear drive mechanism 2 is fixedly mounted on the frame 1 and is arranged horizontally; the free end of the linear drive mechanism 2 is used to act on the rotating shaft of the axle box; the transition plate 3 is fixedly mounted on the linear drive mechanism 2 and is located on the side of the linear drive mechanism 2 close to the axle box; a through hole 31 and a plurality of first connection holes 32 are provided on the transition plate 3 for the free end of the linear drive mechanism 2 to pass through; the push-pull plate 4 and the transition plate 3 are provided with a first connecting hole 31 and a plurality of first connecting holes 32 ... The plate 4 is fixedly installed on one end of the transition plate 3, and the transition plates 3 are arranged at intervals; a receiving cavity 41 for accommodating the shaft box body is formed between the push-pull plate 4 and the transition plate 3; a plurality of second connecting holes 42 corresponding to the first connecting holes 32 are provided on the push-pull plate 4; an open groove 43 extending upward and used for accommodating the shaft box body is opened at the lower end of the push-pull plate 4; there are multiple fasteners 5, and they correspond one by one to the multiple first connecting holes 32; the fasteners 5 pass through the corresponding first connecting holes 32 and the second connecting holes 42, and are used to fix the push-pull plate 4 and the transition plate 3.

[0037] Compared with the prior art, the axle box disassembly tooling provided by the utility model is as follows: when in use, the frame 1 and the linear drive mechanism 2 are moved to one side of the wheelset and the axle box by means of the walking wheel 11, and the linear drive mechanism 2 corresponds to the axle box and the rotating shaft; the transition plate 3 is fixedly installed on the linear drive mechanism 2, and the through hole 31 on the transition plate 3 corresponds to the free end of the linear drive mechanism 2, and the free end of the linear drive mechanism 2 passes through the through hole 31; then the push-pull plate 4 is controlled to be installed in the gap between the wheelset and the axle box and move from top to bottom, the open groove 43 is adapted to the rotating shaft, and the push-pull plate 4 corresponds to the axle box; a plurality of fasteners 5 are used to be respectively penetrated into a plurality of first connecting holes 32 and corresponding second connecting holes 42, the push-pull plate 4 and the transition plate 3 are fixedly connected, and the axle box is located in the accommodating cavity 41 between the push-pull plate 4 and the transition plate 3. Start the linear drive mechanism 2 to move its free end toward the rotating shaft in the through hole 31, and promote relative movement between the rotating shaft and the shaft box, thereby removing the axial direction from the rotating shaft. In this way, there is no need to use manual knocking, which can effectively reduce or even eliminate damage to the shaft box and the rotating shaft, and the operation is more convenient without causing harm to the staff.

[0038] A handrail 14 is installed on the frame 1 to facilitate the operator to control the movement of the frame 1. In the specific operation process, the linear drive mechanism 2 can drive the transition plate 3, the push-pull plate 4 and the axle box to move in the opposite direction relative to the wheelset with the help of the walking wheel 11 to remove the axle box. Alternatively, the linear drive structure 2 is connected to the frame 1 by sliding, so that the fixed end of the linear drive mechanism 2 moves in the opposite direction to drive the transition plate 3, the push-pull plate 4 and the axle box to move in the opposite direction relative to the wheelset to remove the axle box.

[0039] See also Figures 1 to 3 As a specific embodiment of the axle box disassembly tooling provided by the utility model, the push-pull plate 4 is an inverted U-shaped plate, and the multiple second connection holes 42 are divided into two groups and are respectively located on both sides of the opening groove 43; the multiple second connection holes 42 in the same group are arranged vertically; the inverted U-shaped plate is used as the push-pull plate 4, and the opening groove 43 does not need to be reprocessed. And the multiple second connection holes 42 are divided into two groups, and are respectively arranged on both sides of the opening groove 43, so that when the two transition plates 3 and the push-pull plate 4 are connected, the connection between the push-pull plate 4 and the transition plate 3 is more uniform and stable. An inclination angle is set at the notch of the opening groove 43 to increase the opening and avoid damage to the rotating shaft. At the same time, a rubber pad is set on the inner wall of the opening groove 43.

[0040] See also Figures 1 to 3 As a specific embodiment of the shaft box disassembly tool provided by the utility model, the linear drive mechanism 2 is provided with two symmetrically arranged pads 21, and the pads 21 are provided with a first mounting hole; the transition plate 3 is provided with a second mounting hole 33 located between the through hole 31 and the first connecting hole 32, and the first mounting hole corresponds to the second mounting hole 33 one by one; the transition plate 3 is docked with the two pads 21, and the bolts 63 are used to pass through the first mounting hole and the second mounting hole 33 to fix the transition plate 3 and the pad 21; that is, the pads 21 are fixedly installed on both sides of the outer wall of the linear drive mechanism 2, the two pads 21 are symmetrically arranged, and the pads 21 have the first mounting hole; and the second mounting hole 33 is opened on the transition plate 3, and the transition plate 3 is docked and installed on the pad 21, and the second mounting hole 33 is coaxially aligned with the first mounting hole, and finally the bolt 63 is used to pass through the first mounting hole and the second mounting hole 33, and the nut 52 is used to lock and fix. With the help of the two pads 21, the transition plate 3 is firmly installed on the linear drive mechanism 2.

[0041] See also Figures 1 to 3 As a specific embodiment of the axle box disassembly tool provided by the utility model, the fastener 5 includes a screw 51 and nuts 52 installed at both ends of the screw 51; the linear drive mechanism 2 is an oil cylinder; during assembly, the transition plate 3 is fixed on the linear drive mechanism 2, and is moved from the frame 1 to one side of the axle box, and then the push-pull plate 4 is installed from top to bottom between the axle box and the wheelset, and the open groove 43 is adapted to the rotating shaft; then multiple screws 51 are used to pass through the multiple first connection holes 32 and multiple second connection holes 42 on the transition plate 3 and the push-pull plate 4, and then nuts 52 are installed at both ends of the screw 51, and the nuts 52 are screwed to fix the screw 51 with the push-pull plate 4 and the transition plate 3. This method is also convenient for disassembly. One end of the screw 51 can also be fixed on the push-pull plate 4 or the transition plate 3. During assembly, the transition plate 3 or the push-pull plate 4 on the other side can be directly assembled. Using an oil cylinder as the linear drive mechanism 2 can provide a large driving force.

[0042] See also Figure 1 As a specific implementation of the axle box removal tooling provided by the utility model, the push-pull plate 4 is suspended outside the frame 1, and the frame 1 is provided with a counterweight 12 for balancing the weight of the push-pull plate 4; the push-pull plate 4 is suspended outside the entire frame 1 so that the push-pull plate 4 is close to the wheelset and the axle box, and the frame 1 will not be disturbed or hindered; in order to ensure the safe and effective operation of the entire axle box removal tooling, the counterweight 12 is installed on the side of the frame 1 away from the push-pull plate 4, so that the center of gravity of the entire tooling is located above the frame 1.

[0043] See also Figure 1 and Figure 4 As a specific embodiment of the axle box disassembly tool provided by the utility model, the free end of the linear drive mechanism 2 is provided with a threaded section 22 and a contact terminal 23 threadedly connected to the threaded section 22; a blind hole is provided at one end of the contact terminal 23, and an internal thread is provided in the blind hole, so that one end of the contact terminal 23 is connected to the free end of the linear drive mechanism 2. The contact terminal 23 is a stepped structure, and the contact terminal 23 can be replaced according to the size of the wheelset shaft, which is convenient and quick to operate.

[0044] See also Figure 2 and Figure 3 As a specific implementation of the axle box disassembly tooling provided by the utility model, threaded holes 34 for installing lifting rings are provided on the transition plate 3 and the push-pull plate 4; therefore, lifting rings are installed in the threaded holes 34 on the transition plate 3 and the push-pull plate 4, and then a sling is used to act on the lifting ring, which can save effort and be quick to assemble.

[0045] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 As a specific embodiment of the axle box removal tooling provided by the utility model, the axle box removal tooling also includes a bearing structure 6 installed at the lower end of the push-pull plate 4, one end of the bearing structure 6 is detachably connected to the axle box, and the other end extends toward the transition plate 3; the bearing structure 6 is installed at the lower end of the push-pull plate 4, and one end is fixedly connected to the push-pull plate 4, and the other end extends toward the transition plate 3, thereby forming a support below the accommodating cavity 41. After the axle box is removed from the wheelset, the axle box falls on the bearing structure 6, making the operation of the entire axle box removal tooling safer and more reliable.

[0046] See also Figure 1 , Figure 2 , Figure 5 and Figure 6As a specific embodiment of the axle box disassembly tool provided by the utility model, the lower end of the push-pull plate 4 is provided with two screw holes 44 and two guide holes 45, and the two screw holes 44 and the two guide holes 45 are respectively installed on both sides of the opening groove 43; the bearing structure 6 includes a bearing plate 61, a shielding plate 62 and a bolt 63; one end of the upper side of the bearing plate 61 is provided with two through holes 64 arranged at intervals and two guide rods 65 arranged at intervals, the through holes 64 correspond to the screw holes 44, and the guide rods 65 correspond to the guide holes 45; the bearing plate 61 is butt-jointed with the lower end of the push-pull plate 4; the shielding plate 62 It is fixedly installed at the other end of the bearing plate 61 and extends upward; there are multiple bolts 63; the bolts 63 pass through the through hole 64 and are threadedly connected to the corresponding screw hole 44, and are locked and fixed with the nut 52; when the bearing plate 61 is arranged horizontally and one end of it is installed on the lower end surface of the push-pull plate 4, the two guide rods 65 on the bearing plate 61 are respectively inserted into the corresponding two guide holes 45, and the through hole 64 is coaxially aligned with the screw hole 44, and then the bolt 63 is passed through the through hole 64 and is threadedly connected to the screw hole 44, and the nut 52 is locked and fixed to achieve the fixed connection between the bearing plate 61 and the push-pull plate 4. The other end of the bearing plate 61 extends toward the transition plate 3, and a vertically arranged shielding plate 62 is fixedly installed at the other end of the bearing plate 61, which improves the stability of the bearing plate 61 supporting the shaft box. The shielding plate 62 corresponds to the opening groove 43.

[0047] See also Figure 1 As a specific embodiment of the axle box unloading tool provided by the utility model, a lifting mechanism 13 is also provided on the frame 1, and the linear drive mechanism 2 is fixedly installed on the lifting mechanism 13; the lifting mechanism 13 is arranged on the frame 1 in advance, and the linear drive mechanism 2 is fixedly installed on the free end of the lifting mechanism 13. When in use, the push-pull plate 4 and the transition plate 3 are installed on the linear drive mechanism 2 in cooperation; the lifting mechanism 13 is started to control the linear drive mechanism 2, the push-pull plate 4 and the transition plate 3 to be lifted to a height higher than the axle box, and then the linear drive mechanism 2, the push-pull plate 4 and the transition plate 3 are driven to move toward the bogie or the wheelset by means of the running wheel 11 on the frame 1, and the push-pull plate 4 and the transition plate 3 are located directly above the axle box; finally, the lifting mechanism 13 is started again to control the linear drive mechanism 2, the push-pull plate 4 and the transition plate 3 to move downward, and the push-pull plate 4 is clamped between the axle box and the wheelset by means of the opening groove 43. In this way, there is no need to disassemble and assemble the push-pull plate 4 and the fastener 5 multiple times, especially for large-scale axle box unloading work. The lifting mechanism 13 adopts a scissor-type lifting platform or a spiral lifting workbench.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An axle box disassembly tool, characterized in that: include: A frame, with travel wheels at the lower end; A linear drive mechanism is fixedly mounted on the frame and arranged horizontally; the free end of the linear drive mechanism is used to act on the rotating shaft of the axle box body; A transition plate is fixedly mounted on the linear drive mechanism and is located on a side of the linear drive mechanism close to the shaft box; the transition plate is provided with a through hole for the free end of the linear drive mechanism to pass through and a plurality of first connection holes; A push-pull plate is fixedly mounted on one end of the transition plate, and the transition plates are arranged at intervals; a receiving cavity for receiving the shaft box is formed between the push-pull plate and the transition plate; a plurality of second connection holes corresponding to the first connection holes are provided on the push-pull plate; an open groove extending upward and used for receiving the shaft box is provided at the lower end of the push-pull plate; There are multiple fasteners, which correspond one-to-one to the multiple first connecting holes. The fasteners pass through the corresponding first connecting holes and the second connecting holes to fix the push-pull plate and the transition plate.

2. The axle box disassembly tool as claimed in claim 1, characterized in that: The push-pull plate is an inverted U-shaped plate, and the plurality of second connection holes are divided into two groups and are respectively located on both sides of the open groove; the plurality of second connection holes in the same group are arranged vertically.

3. The axle box disassembly tool as claimed in claim 2, characterized in that: The linear drive mechanism is provided with two symmetrically arranged pads, each of which is provided with a first mounting hole; the transition plate is provided with a second mounting hole located between the through hole and the first connecting hole, and the first mounting hole corresponds to the second mounting hole one by one; the transition plate is docked with the two pads, and bolts are used to pass through the first mounting hole and the second mounting hole to fix the transition plate and the pad.

4. The axle box disassembly tool as claimed in claim 1, characterized in that: The fastener comprises a screw rod and nuts installed at both ends of the screw rod; and the linear drive mechanism is an oil cylinder.

5. The axle box disassembly tool as claimed in claim 1, characterized in that: The push-pull plate is suspended outside the frame, and a counterweight block for balancing the weight of the push-pull plate is provided on the frame.

6. The axle box disassembly tool as claimed in claim 1, characterized in that: The free end of the linear drive mechanism is provided with a threaded section and a contact end head threadedly connected to the threaded section.

7. The axle box disassembly tool as claimed in claim 1, characterized in that: The transition plate and the push-pull plate are both provided with threaded holes for installing lifting rings.

8. The axle box disassembly tool as claimed in claim 1, characterized in that: The axle box disassembly tool also includes a bearing structure installed at the lower end of the push-pull plate, one end of the bearing structure is detachably connected to the axle box, and the other end extends toward the transition plate.

9. The axle box disassembly tool as claimed in claim 8, characterized in that: The lower end of the push-pull plate is provided with two screw holes and two guide holes, and the two screw holes and the two guide holes are respectively installed on both sides of the opening groove; the bearing structure includes: The bearing plate has two through holes and two guide rods arranged at intervals at one end of the upper side, the through holes correspond to the screw holes, and the guide rods correspond to the guide holes; the bearing plate is butt-jointed with the lower end of the push-pull plate; A shielding plate is fixedly mounted on the other end of the bearing plate and extends upward; There are multiple bolts; the bolts pass through the through holes and are threadedly connected to the corresponding screw holes, and are locked and fixed using nuts.

10. The axle box disassembly tool as claimed in claim 1, characterized in that: The frame is also provided with a lifting mechanism, and the linear drive mechanism is fixedly mounted on the lifting mechanism.

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