Automatic electrical console based on PLC

Abstract

The utility model relates to the technical field of electrical automation, and discloses an automatic electrical console based on a PLC, which comprises a cabinet body, a support frame, a driving motor and a heat dissipation assembly, the support frame is fixedly arranged at the top of the cabinet body, the driving motor is arranged at the top of the support frame, and the heat dissipation assembly is arranged in the cabinet body corresponding to the position of the driving motor. The dehumidification device comprises a dehumidification box, a dehumidification assembly, a lifting assembly and an adjusting assembly, the dehumidification assembly is arranged in the dehumidification box, the lifting assembly is installed on the top of the dehumidification box, and the lifting assembly arranged on the dehumidification box can drive the dehumidification assembly to conduct dynamic lifting adjustment in the dehumidification box through the adjusting assembly; therefore, during heat dissipation operation, the airflow transmission direction and angle can be continuously changed, and the contact area and time of the airflow and the dehumidification plate are increased, so that the dehumidification effect on the transmitted airflow is improved, and the influence of external wet airflow on related equipment in the cabinet body is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical automation, and more specifically to an automated electrical control console based on PLC. Background Art

[0002] Automatic electrical control based on PLC (Programmable Logic Controller) is a widely used technology in the field of modern industrial automation. It uses the powerful logic operation and control capabilities of PLC to achieve automatic and precise control of various electrical equipment.

[0003] During operation, the related equipment inside the control box will generate a lot of heat due to long-term operation. Therefore, it is usually necessary to discharge the heat to prevent long-term heat accumulation from causing damage to the equipment.

[0004] When performing heat dissipation operations, fans and other means are usually used to transmit external airflow to the inside of the cabinet and then export it, so as to effectively bring out the heat to achieve the purpose of heat dissipation. However, due to different weather and regions, the external humidity is too high. When performing airflow transmission operations, it is easy to transmit water vapor in the airflow to the equipment box, causing damage to the equipment. For this reason, we proposed an automated electrical control console based on PLC. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide an automatic electrical control console based on PLC to solve the problems of the automatic electrical control console based on PLC.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: an automated electrical control console based on PLC, comprising a cabinet, a support frame, a drive motor and a heat dissipation component, wherein the support frame is fixedly mounted on the top of the cabinet, the drive motor is mounted on the top of the support frame, the heat dissipation component is arranged inside the cabinet corresponding to the position of the drive motor, and further comprises a dehumidification box, a dehumidification component, a lifting component and an adjustment component, wherein the dehumidification component is arranged inside the dehumidification box, the lifting component is mounted on the top of the dehumidification box, the bottom end of the lifting component slides through the dehumidification box (and is connected to the top end of the dehumidification component, the adjustment component is arranged inside the support frame, the adjustment component is connected to the output end of the drive motor, and the lifting component is connected to the adjustment component.

[0007] Furthermore, the heat dissipation assembly includes a heat dissipation box, an auxiliary shaft, fan blades, a limit member and a driving member. The heat dissipation box is fixedly mounted on the inner wall of the cabinet, and the auxiliary shaft is rotatably arranged on the heat dissipation box. One end of the auxiliary shaft extends out of the heat dissipation box and is fixedly connected to the fan blades, and the other end of the auxiliary shaft extends into the heat dissipation box. The limit member is mounted on the auxiliary shaft, and the end of the limit member away from the auxiliary shaft is mounted on the inner wall of the heat dissipation box. One end of the driving member is mounted on the output end of the driving motor, and the other end of the driving member slides through the heat dissipation box and extends to the interior of the heat dissipation box.

[0008] Furthermore, the limiting member includes a limiting sleeve and a connecting rod, the limiting sleeve is movably mounted on the auxiliary shaft, one end of the connecting rod is fixedly mounted on the limiting sleeve, and the other end of the connecting rod is mounted on the inner wall of the heat dissipation box.

[0009] Furthermore, the driving member includes a driving shaft and vertical meshing gears, the upper end of the driving shaft is fixedly mounted on the output end of the driving motor, the other end of the driving shaft slides through the corresponding wall of the heat sink and extends to the interior of the heat sink, and the vertical meshing gears are divided into two groups, and the two groups of vertical meshing gears are respectively fixedly mounted on the auxiliary shaft and the driving shaft, and the vertical meshing gears on the auxiliary shaft and the vertical meshing gears on the driving shaft mesh with each other.

[0010] Furthermore, the dehumidification component includes a lifting frame and a dehumidification plate. The lifting frame is a rectangular box with open sides, and the lifting frame connects the dehumidification box with the cabinet. The dehumidification plate is an inclined plate and is fixed in the lifting frame. Several dehumidification plates are arranged side by side and at intervals.

[0011] Furthermore, the lifting assembly includes a limiting tube, a lifting column, a lifting slot and an adjusting rod. The limiting tube is fixedly installed on the top of the dehumidification box, the upper part of the lifting column is slidably arranged inside the limiting tube, the bottom end of the lifting column slides through the dehumidification box and is interconnected with the lifting frame, the lifting slot is opened on the limiting tube close to the side of the adjusting assembly, the adjusting rod is installed on the lifting column, and the adjusting rod extends away from one end of the lifting column and is buckled on the adjusting assembly.

[0012] Furthermore, the adjustment component includes an adjustment sleeve and an adjustment slot, wherein the adjustment sleeve is fixedly mounted on the output end of the driving motor, the adjustment slot is arranged around the adjustment sleeve, and the end of the adjustment rod away from the lifting column slides into the adjustment slot.

[0013] Furthermore, the lifting assembly is provided with a misalignment adjustment member, which includes a limiting groove and a movable groove. The limiting groove is arranged on the upper part of the limiting tube away from the lifting groove, and the movable groove is arranged on the side wall of the lifting column corresponding to the limiting groove position.

[0014] Furthermore, the misalignment adjustment member also includes an insertion rod, a slot and a hole. The slot is opened at the top of the lifting column, the slot is connected to the movable slot, the hole is opened on the adjustment rod, and at least two groups of holes are opened at intervals along the length direction. The insertion rod is set in the slot.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the utility model, the lifting assembly arranged on the dehumidification box can drive the dehumidification assembly to perform dynamic lifting and lowering adjustment inside the dehumidification box through the adjusting assembly, so that when performing heat dissipation operations, the airflow transmission direction and angle can be continuously changed, and the contact area and time between the airflow and the dehumidification plate can be increased, thereby improving the dehumidification effect of the transmitted airflow and greatly reducing the impact of external humid airflow on related equipment inside the cabinet.

[0017] 2. In the utility model, the position of the adjusting rod can be effectively changed by means of the plug rod on the offset adjusting part and the plug hole on the adjusting rod, so that the dehumidification component can be effectively changed to static state according to the demand. While reducing the load of the driving motor, the heat dissipation and dehumidification methods can also be adaptively adjusted to improve its scope of application and applicable scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the PLC-based automated electrical control console in the utility model;

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the cabinet in the utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0021] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0022] Figure 5 It is a schematic diagram of the partial connection structure of the lifting component and the adjusting component in the utility model;

[0023] Figure 6 It is a schematic diagram of the partial structure of the dehumidification component in the utility model.

[0024] Legend: 1. Cabinet; 2. Dehumidifier box; 3. Support frame; 4. Drive motor; 5. Adjustment sleeve; 6. Adjustment slot; 7. Limiting tube; 8. Heat sink; 9. Lifting frame; 10. Dehumidifier plate; 11. Lifting column; 12. Drive shaft; 13. Vertical meshing gear; 14. Auxiliary shaft; 15. Fan blade; 16. Limiting sleeve; 17. Connecting rod; 18. Lifting slot; 19. Limiting slot; 20. Insert rod; 21. Slot; 22. Movable slot; 23. Adjustment rod; 24. Socket; 25. Display screen; 26. Control panel. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0026] Figure 1 to Figure 6 It is the best embodiment of the utility model, and the following Figure 1 to Figure 6 The utility model is further described.

[0027] like Figure 1-Figure 6 As shown, the PLC-based automated electrical control console includes a cabinet 1, a support frame 3, a drive motor 4 and a heat dissipation component. An equipment rack is arranged inside the cabinet 1, a box door is arranged at the front end of the cabinet 1, a control panel 26 and a display screen 25 are installed on the box door, the support frame 3 is fixedly installed on the top of the cabinet 1, the drive motor 4 is installed on the top of the support frame 3, the heat dissipation component is arranged inside the cabinet 1, at least one group of heat dissipation components is arranged, and the position of the heat dissipation component and the position of the drive motor 4 correspond to each other.

[0028] Furthermore, first heat dissipation ports for heat dissipation are arranged on both sides of the cabinet 1, and the first heat dissipation ports on both sides are arranged opposite to each other. A plurality of first baffles are arranged at intervals and tilted inside the first heat dissipation ports. The first baffles on the side walls of the cabinet 1 are arranged tilted downward from the inside to the outside, and the tilted first baffles reduce the amount of external water vapor and impurities entering the interior of the cabinet 1.

[0029] The PLC-based automated electrical control console also includes a dehumidification box 2, a dehumidification component, a lifting component and an adjustment component. The dehumidification component is arranged inside the dehumidification box 2, the lifting component is installed on the top of the dehumidification box 2, the bottom end of the lifting component slides through the dehumidification box 2 and is connected to the top of the dehumidification component, the adjustment component is arranged inside the support frame 3, the adjustment component is connected to the output end of the driving motor 4, the lifting component is connected to the adjustment component, and the driving motor 4 is started to drive the adjustment component to rotate, thereby driving the lifting component to be lifted and lowered.

[0030] Specifically, the dehumidification box 2 is a rectangular box with an open side close to the cabinet body 1. The dehumidification box 2 is connected to the inner cavity of the cabinet body 1 through the first heat dissipation port on the corresponding side. A second heat dissipation port is arranged on the side wall of the dehumidification box 2. The second heat dissipation port is arranged opposite to the first heat dissipation port. A second baffle is also arranged in the second heat dissipation port. The second baffle is arranged in the same manner as the first baffle. The dehumidification box 2 is detachably mounted on the cabinet body 1 by bolts.

[0031] Specifically, the support frame 3 is composed of a top fixing plate, a bottom fixing ring and support columns on both sides. The bottom fixing ring is installed on the cabinet 1, the top fixing plate is spaced just above the bottom fixing ring, the support columns are arranged between the bottom fixing ring and the top fixing plate, the size of the top fixing plate is adapted to the size of the drive motor 4, the adjustment component is arranged between the top fixing plate and the bottom fixing ring, and the support columns on both sides can also enable the adjustment component to be effectively adjusted when performing supporting operations.

[0032] The heat dissipation assembly includes a heat dissipation box 8, an auxiliary shaft 14, fan blades 15, a limiter and a driving member. The heat dissipation box 8 is fixedly installed on the inner wall of the cabinet 1, and the auxiliary shaft 14 is rotatably set on the heat dissipation box 8. One end of the auxiliary shaft 14 extends out of the heat dissipation box 8 and is fixedly connected to the fan blades 15, and the other end of the auxiliary shaft 14 extends into the heat dissipation box 8. The limiter is installed on the auxiliary shaft 14, and the end of the limiter away from the auxiliary shaft 14 is installed on the inner wall of the heat dissipation box 8. One end of the driving member is installed on the output end of the driving motor 4, and the other end of the driving member slides through the heat dissipation box 8 and extends to the inside of the heat dissipation box 8.

[0033] Furthermore, the limiting member includes a limiting sleeve 16 and a connecting rod 17 . The limiting sleeve 16 is movably mounted on the auxiliary shaft 14 . One end of the connecting rod 17 is fixedly mounted on the limiting sleeve 16 , and the other end of the connecting rod 17 is mounted on the inner wall of the heat sink 8 .

[0034] Furthermore, the driving member includes a driving shaft 12 and a vertical meshing gear 13. The upper end of the driving shaft 12 is fixedly mounted on the output end of the driving motor 4. The other end of the driving shaft 12 slides through the heat sink 8 and extends to the inside of the heat sink 8. The vertical meshing gear 13 is divided into two groups. The two groups of vertical meshing gears 13 are respectively fixedly mounted on one end of the auxiliary shaft 14 located in the heat sink 8 and on the driving shaft 12. The vertical meshing gear 13 on the auxiliary shaft 14 and the vertical meshing gear 13 on the driving shaft 12 mesh with each other. The vertical meshing gear 13 is arranged in the heat sink 8.

[0035] The dehumidification component includes a lifting frame 9 and a dehumidification plate 10. The lifting frame 9 is a rectangular box with open sides, and the two sides of the lifting frame 9 are respectively opposite to the first heat dissipation port and the second heat dissipation port. The dehumidification plate 10 is an inclined plate. The dehumidification plate 10 is fixedly arranged in the lifting frame 9. Several dehumidification plates 10 are arranged side by side and at intervals. The material of the dehumidification plate 10 is sponge. The specific material of the dehumidification plate 10 is set according to needs. The dehumidification plate 10 is installed on the inner side of the lifting frame 9 at an inclined interval.

[0036] In this embodiment, the inclination angle of the dehumidification plate 10 matches the inclination angles of the first baffle plate and the second baffle plate at the corresponding position, and the inner top of the lifting frame 9 is an inclined surface matching the inclination angle of the dehumidification plate 10. The first baffle plate and the second baffle plate are arranged in parallel.

[0037] The lifting assembly includes a limiting tube 7, a lifting column 11, a lifting slot 18 and an adjusting rod 23. The limiting tube 7 is tubular and is fixedly mounted on the top of the dehumidification box 2. The upper part of the lifting column 11 is slidably arranged inside the limiting tube 7. The bottom end of the lifting column 11 slides through the dehumidification box 2 and is connected to the lifting frame 9 inside the dehumidification box 2. The lifting slot 18 is provided on the side of the limiting tube 7 close to the adjusting assembly. The adjusting rod 23 is mounted on the lifting column 11. The adjusting rod 23 extends away from one end of the lifting column 11 and is buckled on the adjusting assembly. The adjusting rod 23 can be lifted and lowered in the lifting slot 18 of the limiting tube 7, thereby driving the lifting column 11 to be lifted and lowered in the limiting tube 7.

[0038] The adjustment assembly includes an adjustment sleeve 5 and an adjustment slot 6 . The adjustment sleeve 5 is fixedly mounted on the output end of the driving motor 4 . The adjustment slot 6 is arranged around the adjustment sleeve 5 . The end of the adjustment rod 23 away from the lifting column 11 movably extends into the adjustment slot 6 .

[0039] Furthermore, the adjusting slot 6 extends obliquely upward from the bottom end of the side wall of the adjusting sleeve 5 to the top end, and then obliquely returns to the bottom end in the reverse direction, so that the adjusting rod 23 drives the lifting column 11 to reciprocate and rise and fall.

[0040] In this embodiment, the adjusting sleeve 5 is rotated so that the adjusting slot 6 on the adjusting sleeve 5 drives the adjusting rod 23 to move, thereby enabling the lifting column 11 to be lifted and lowered in the limiting tube 7 .

[0041] Furthermore, the lifting assembly is provided with a misalignment adjustment member, which includes a limit groove 19 and a movable groove 22. The limit groove 19 is arranged on the upper part of the limit tube 7 away from the lifting groove 18, and the movable groove 22 is arranged on the side wall of the lifting column 11 corresponding to the position of the limit groove 19, and the corresponding end of the adjustment rod 23 slides into the movable groove 22.

[0042] When the adjusting rod 23 moves away from the adjusting sleeve 5, the adjusting rod 23 will extend into the limiting groove 19. At this time, the lifting assembly will not be lifted or lowered as the adjusting sleeve 5 rotates, so that the dehumidification plate 10 inside the dehumidification box 2 is in a static state.

[0043] When the adjusting rod 23 moves toward the side close to the adjusting sleeve 5 and is buckled in the adjusting slot 6, the adjusting rod 23 will drive the lifting frame 9 to be raised and lowered through the lifting column 11 as the adjusting sleeve 5 rotates, so that the dehumidification plate 10 inside the dehumidification box 2 is in a dynamic lifting state.

[0044] Specifically, the misalignment adjustment member also includes an insertion rod 20, a slot 21 and a hole 24. The slot 21 is opened at the top of the lifting column 11, and the slot 21 is connected to the movable slot 22. The hole 24 is opened on the adjustment rod 23. The holes 24 are arranged in two groups spaced apart along the length direction. The insertion rod 20 is set in the slot 21, and the bottom end of the insertion rod 20 limits the adjustment rod 23 through the slot 21 and the hole 24.

[0045] In this embodiment, a plurality of heat dissipation boxes 8 are arranged along the height direction, and the lifting frames 9 correspond to the heat dissipation boxes 8 one by one.

[0046] The working principle and use process of the utility model: when in use, the driving motor 4 is started to rotate through the driving shaft 12 and the vertical meshing gear 13 on the driving shaft 12 to drive the fan blades 15 inside the heat dissipation box 8 to rotate, thereby transmitting the external airflow to the inside of the cabinet 1, and transmitting it outward through the other end, thereby completing the heat dissipation treatment of the relevant equipment inside the cabinet 1. When the driving motor 4 is working, the adjusting slot 6 on the adjusting sleeve 5 drives the adjusting rod 23 to be lifted and adjusted, thereby driving the lifting column 11 to be lifted and adjusted, so that the lifting frame 9 and the dehumidification plate 10 inside the dehumidification box 2 are reciprocated in the dehumidification box 2. The reciprocating lifting of the dehumidification plate 10 can cooperate with the cabinet 1 and the heat dissipation cavity baffle on the dehumidification box 2 to continuously adjust the airflow entering the cabinet 1, so that the moisture in the airflow can fully contact the dehumidification plate 10, and the dehumidification plate 10 set according to demand captures the moisture in the airflow to prevent the moisture from being transmitted to the inside of the cabinet 1.

[0047] When the external humidity is low (specifically, it can be determined based on the test results of the humidity detector), the rod 20 is pulled out and the adjusting rod 23 is moved in the movable groove 22, so that the adjusting rod 23 and the adjusting groove 6 are disengaged. When the adjusting rod 23 is moved to a suitable position, the rod 20 is reinserted so that the rod 20 limits the adjusting rod 23 through the socket 24. At this time, the lifting frame 9 and the dehumidification plate 10 will not be lifted or lowered inside the dehumidification box 2, thereby not interfering with the airflow transmitted to the inside of the cabinet 1, so that heat dissipation can be carried out more efficiently.

[0048] By tilting the dehumidification plate 10, impurities and water flow attached to the dehumidification plate 10 can be tiltedly transmitted to the interior of the dehumidification box 2, thereby reducing the accumulation of impurities and water flow.

[0049] The detachable dehumidification box 2 allows the user to choose whether to set up a dehumidification component according to needs, and at the same time, the interior of the dehumidification box 2 can be effectively cleaned and washed.

[0050] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A PLC-based automated electrical control console, comprising a cabinet (1), a support frame (3), a drive motor (4) and a heat dissipation component, wherein the support frame (3) is fixedly mounted on the top of the cabinet (1), the drive motor (4) is mounted on the top of the support frame (3), and the heat dissipation component is arranged inside the cabinet (1) at a position corresponding to the drive motor (4), and is characterized in that: It also includes a dehumidification box (2), a dehumidification component, a lifting component and an adjustment component, wherein the dehumidification component is arranged inside the dehumidification box (2), the lifting component is installed on the top of the dehumidification box (2), the bottom end of the lifting component slides through the dehumidification box (2) and is connected to the top end of the dehumidification component, the adjustment component is arranged inside the support frame (3), the adjustment component is connected to the output end of the drive motor (4), and the lifting component is connected to the adjustment component.

2. The PLC-based automated electrical control console according to claim 1, characterized in that: The heat dissipation assembly comprises a heat dissipation box (8), an auxiliary shaft (14), a fan blade (15), a stopper and a driving member. The heat dissipation box (8) is fixedly mounted on the inner wall of the cabinet (1); the auxiliary shaft (14) is rotatably mounted on the heat dissipation box (8); one end of the auxiliary shaft (14) extends out of the heat dissipation box (8) and is fixedly connected to the fan blade (15); the other end of the auxiliary shaft (14) extends into the heat dissipation box (8); the stopper is mounted on the auxiliary shaft (14); one end of the stopper away from the auxiliary shaft (14) is mounted on the inner wall of the heat dissipation box (8); one end of the driving member is mounted on the output end of the drive motor (4); the other end of the driving member slides through the heat dissipation box (8) and extends into the interior of the heat dissipation box (8).

3. The PLC-based automated electrical control console according to claim 2, characterized in that: The limiting member comprises a limiting sleeve (16) and a connecting rod (17); the limiting sleeve (16) is movably mounted on the auxiliary shaft (14); one end of the connecting rod (17) is fixedly mounted on the limiting sleeve (16); and the other end of the connecting rod (17) is mounted on the inner wall of the heat dissipation box (8).

4. The PLC-based automated electrical control console according to claim 3, characterized in that: The driving member comprises a driving shaft (12) and a vertical meshing gear (13); the upper end of the driving shaft (12) is fixedly mounted on the output end of the driving motor (4); the other end of the driving shaft (12) slides through the wall surface at a corresponding position of the heat sink (8) and extends into the interior of the heat sink (8); the vertical meshing gear (13) comprises two groups, and the two groups of vertical meshing gears (13) are respectively fixedly mounted on the auxiliary shaft (14) and the driving shaft (12); the vertical meshing gear (13) on the auxiliary shaft (14) and the vertical meshing gear (13) on the driving shaft (12) mesh with each other.

5. The PLC-based automated electrical control console according to claim 1, characterized in that: The dehumidification assembly comprises a lifting frame (9) and a dehumidification plate (10); the lifting frame (9) is a rectangular box body with two sides open, and the lifting frame (9) connects the dehumidification box (2) with the cabinet body (1); the dehumidification plate (10) is in the shape of an inclined plate, and the dehumidification plate (10) is fixedly arranged in the lifting frame (9); and a plurality of dehumidification plates (10) are arranged side by side and at intervals.

6. The PLC-based automated electrical control console according to claim 5, characterized in that: The lifting assembly comprises a limit tube (7), a lifting column (11), a lifting slot (18) and an adjusting rod (23); the limit tube (7) is fixedly mounted on the top of the dehumidification box (2); the upper part of the lifting column (11) is slidably arranged inside the limit tube (7); the bottom end of the lifting column (11) slides through the dehumidification box (2) and is connected to the lifting frame (9); the lifting slot (18) is provided on the limit tube (7) near the adjusting assembly; the adjusting rod (23) is mounted on the lifting column (11); the adjusting rod (23) extends away from one end of the lifting column (11) and is buckled on the adjusting assembly.

7. The PLC-based automated electrical control console according to claim 6, characterized in that: The adjustment assembly comprises an adjustment sleeve (5) and an adjustment slot (6); the adjustment sleeve (5) is fixedly mounted on the output end of the drive motor (4); the adjustment slot (6) is arranged around the adjustment sleeve (5); and the end of the adjustment rod (23) away from the lifting column (11) slides into the adjustment slot (6).

8. The PLC-based automated electrical control console according to claim 6, characterized in that: The lifting assembly is provided with a misalignment adjustment member, the misalignment adjustment member comprising a limiting groove (19) and a movable groove (22), the limiting groove (19) being arranged on an upper portion of a side of the limiting tube (7) away from the lifting groove (18), and the movable groove (22) being arranged on a side wall of the lifting column (11) at a position corresponding to the limiting groove (19).

9. The PLC-based automated electrical control console according to claim 8, characterized in that: The misalignment adjustment member further comprises an insertion rod (20), a slot (21) and a socket (24); the slot (21) is provided at the top of the lifting column (11); the slot (21) is communicated with the movable groove (22); the socket (24) is provided on the adjustment rod (23); at least two groups of sockets (24) are provided at intervals along the length direction; the insertion rod (20) is arranged in the slot (21).

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