Ore surface cleaning device

Abstract

The invention relates to the technical field of ore cleaning, and discloses an ore surface cleaning device which comprises a placing table, a rotary cleaning mechanism and an overturning jacking mechanism. The turnover jacking mechanism is arranged on the side, close to the ground, of the placement table and used for supporting the placement table and adjusting the inclination angle of the placement table; the rotary cleaning mechanism comprises supporting legs arranged on the two sides of the containing table, the ends of the supporting legs are rotationally connected with a cleaning tank, the cleaning tank is of a tubular structure with the two ends open, end covers moving transversely are arranged at the two ends of the cleaning tank, and a screening pipe assembly which is coaxial with the cleaning tank and synchronously rotates along with the cleaning tank is arranged in the cleaning tank. The side wall of the cleaning tank is in sliding connection with impact rods which are in a radial shape relative to the axis of the cleaning tank, and an arc-shaped protruding block matched with the top wheel is arranged in the middle of the containing table. Ore is placed in the cleaning tank to be subjected to rolling cleaning, and the utilization rate of water resources is increased.

Description

Technical Field

[0001] The invention relates to the technical field of ore cleaning, in particular to an ore surface cleaning device. Background Art

[0002] When ore is mined, it often contains a large amount of soil and other impurities, which will affect the efficiency of subsequent mineral processing. Therefore, the ore needs to be cleaned before mineral processing.

[0003] Conventional cleaning mostly uses a drum-type ore washer to clean the ore. The drum-type ore washer can stir, rinse and desludge the ore through a rotating drum and high-pressure water flow. However, since desludge is achieved by flushing with a high-pressure water flow, a large amount of water is required in the entire cleaning process, resulting in a waste of water resources. Therefore, it needs to be improved. Summary of the invention

[0004] The present invention provides an ore surface cleaning device, which solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A device for cleaning the surface of an ore, comprising a placing table, a rotating cleaning mechanism and a flipping and lifting mechanism; the flipping and lifting mechanism is arranged on a side of the placing table close to the ground, and is used to support the placing table and adjust the inclination angle of the placing table; the rotating cleaning mechanism comprises legs arranged on both sides of the placing table, and the ends of the legs are rotatably connected to a cleaning tank, the cleaning tank is a tubular structure with both ends open, and both ends of the cleaning tank are provided with end covers that move laterally, and a screening pipe assembly that is coaxially arranged with the cleaning tank and rotates synchronously with the cleaning tank is arranged inside the cleaning tank, and the screening pipe assembly is a tubular structure with both ends open, and the cleaning tank The side wall is slidably connected with an impact rod which is radially arranged relative to the axis of the cleaning tank. The impact rod is arranged in a circular array and a linear array along the axis of the cleaning tank. A top wheel is provided at the end of the impact rod away from the cleaning tank. A reset spring is provided between the top wheel and the outer wall of the cleaning tank. An arc-shaped protrusion cooperating with the top wheel is provided in the middle of the placement table. When the top wheel contacts the arc-shaped protrusion, the impact rod corresponding to the top wheel passes through the gap of the screen pipe assembly and moves to the inside of the screen pipe assembly. When the top wheel separates from the arc-shaped protrusion, the reset spring drives the end of the impact rod to move between the screen pipe assembly and the cleaning tank.

[0006] As a preferred technical solution of the present invention, the screen pipe assembly includes a support plate fixedly connected to the inner wall of the cleaning tank, the support plate is fixedly connected to a support ring arranged along the circumference of the cleaning tank, and the support ring is evenly distributed with gear rods parallel to the axis line of the cleaning tank. When the impact rod moves, it passes through the gap between two adjacent gear rods.

[0007] As a preferred technical solution of the present invention, a crossbeam is provided in the middle of the support leg, a second drive motor is provided in the middle of the crossbeam, the output shaft of the second drive motor is fixedly connected to a driving gear, and the driving gear is meshedly connected to a driven gear fixedly connected to the outer wall of the cleaning tank. A lifting cylinder is provided on the side wall of the cleaning tank, the piston rod of the lifting cylinder is fixedly connected to the end cover, the outer edge of the end cover is fixedly connected to a guide slide rod, and the side of the guide slide rod away from the end cover is slidably connected to a fixed block fixedly connected to the outer wall of the cleaning tank.

[0008] As a preferred technical solution of the present invention, a limiting hole cooperating with the shift rod is arranged on one side of the end cover close to the cleaning tank, and a connecting flange is arranged on the side of the end cover.

[0009] As a preferred technical solution of the present invention, the flipping and lifting mechanism includes a fixed support arranged at one end of the placement table, the fixed support is provided with a rotating seat rotatably connected to the placement table, two parallel auxiliary supports are provided on the side of the placement table away from the fixed support, the auxiliary support and the fixed support are respectively fixedly connected to the two sides of the reinforcing support rod, a lifting assembly for driving the placement table to rotate is provided between the two auxiliary supports, and when the placement table is rotated to a horizontal state, the placement table fits with the end of the auxiliary support. The lifting assembly includes a lifting screw rotatably connected to the middle part of the auxiliary support, the two sides of the lifting screw are provided with threads with opposite rotation directions, the two sides of the lifting screw are threadedly connected to push blocks, the push block is rotatably connected to one end of the push rod, and the other end of the push rod is rotatably connected to a push block that cooperates with the placement table, and a first drive motor is provided on the auxiliary support, the output shaft of the first drive motor is fixedly connected to the first bevel gear, and the first bevel gear is meshedly connected to the second bevel gear fixedly connected to the lifting screw.

[0010] The present invention has the following benefits: By placing the ore in the cleaning tank for tumbling cleaning, the utilization rate of water resources is improved, and the up and down movement of the impact rod can improve the cleaning efficiency and thus improve the utilization rate of clean water on the one hand, and on the other hand, it can also break up the ore agglomerates and improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 work.

[0012] Figure 1 The figure is a schematic diagram of the structure of an ore surface cleaning device.

[0013] Figure 2The figure is a front view of an ore surface cleaning device.

[0014] Figure 3 It is a schematic diagram of the structure of an ore surface cleaning device after the cleaning tank is lifted.

[0015] Figure 4 The present invention is a structural schematic diagram of a flipping and lifting mechanism in an ore surface cleaning device.

[0016] Figure 5 The present invention is a schematic diagram of the structure of a lifting component in an ore surface cleaning device.

[0017] Figure 6 The figure is a schematic diagram of the structure of a rotary cleaning mechanism in an ore surface cleaning device.

[0018] Figure 7 The present invention is a schematic diagram of the structure of the cooperation between the cleaning tank and the end cover in an ore surface cleaning device.

[0019] Figure 8 The figure is a schematic diagram of the structure of an end cover in an ore surface cleaning device.

[0020] Fig. 9 The figure is a schematic diagram of the structure of a screening tube assembly in an ore surface cleaning device.

[0021] Fig.10 for Fig. 9 Left view of .

[0022] In the figure: 1. placing table; 2. rotating cleaning mechanism; 3. flip lifting mechanism; 4. fixed support; 5. rotating seat; 6. auxiliary support; 7. reinforcing support rod; 8. lifting assembly; 9. first driving motor; 10. first bevel gear; 11. second bevel gear; 12. lifting screw; 13. pushing block; 14. ejector rod; 15. ejector block; 16. supporting leg; 17. cleaning tank; 18. end cover; 19. connecting flange; 20. fixed block; 21. guide slide rod; 22. lifting cylinder; 23. driven gear; 24. second driving motor; 25. driving gear; 26. crossbeam; 27. limiting hole; 28. support plate; 29. ​​support ring; 30. gear lever; 31. screening pipe assembly; 32. impact rod; 33. reset spring; 34. ejector wheel; 35. arc-shaped protrusion. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In one embodiment, see Figure 1-Figure 10 , an ore surface cleaning device, comprising a placing table 1, a rotating cleaning mechanism 2 and a flipping and lifting mechanism 3; The flipping and lifting mechanism 3 is arranged on the side of the placement table 1 close to the ground, and is used to support the placement table 1 and adjust the inclination angle of the placement table 1. The flipping and lifting mechanism 3 allows the entire cleaning device to be placed directly on the ground, ensuring that the cleaning device can remain stable during operation. The flipping and lifting mechanism 3 can also push the placement table 1 to adjust the pitch angle, which is convenient for the subsequent loading and unloading of the cleaning device and the sewage treatment; The rotating cleaning mechanism 2 includes legs 16 arranged on the left and right sides of the upper surface of the placing table 1. The legs 16 are arranged to be inclined toward the center of the placing table 1, that is, there are two legs 16 on one side of the placing table 1. The upper ends of the legs 16 are rotatably connected to the left and right sides of the cleaning tank 17. Bearings are arranged on the outside of the cleaning tank 17. The bearings are rotatably connected to the legs 16, so that the cleaning tank 17 can rotate along the upper ends of the legs 16. Thus, the cleaning tank 17 can be supported by the legs 16 while the cleaning tank 17 itself can be rotated. The cleaning tank 17 is a tubular structure with its left and right ends open, and end caps are arranged on the left and right ends of the cleaning tank 17. The cover 18, the end cover 18 can move left and right, so that the opening or closing of the cleaning tank 17 is controlled by the end cover 18. A screen pipe assembly 31 is arranged inside the cleaning tank 17. The screen pipe assembly 31 is also a tubular structure with open ends, and the screen pipe assembly 31 and the axis line of the cleaning tank 17 are arranged in a colinear manner. The screen pipe assembly 31 is fixed on the inner wall of the cleaning tank 17, so that the screen pipe assembly 31 can rotate synchronously with the cleaning tank 17. An impact rod 32 is slidably connected to the side wall of the cleaning tank 17. The impact rod 32 is radially distributed relative to the center of the cleaning tank 17, that is, the axis line of the impact rod 32 coincides with the center of the cleaning tank 17. The impact rods 32 are arranged in a circular array relative to the axis of the cleaning tank 17, and are arranged in a linear array along the axis of the cleaning tank 17. Since a gap for screening is left on the side wall of the screen pipe assembly 31, when the impact rod 32 moves toward the center of the screen pipe assembly 31, the impact rod 32 can be inserted into the inside of the screen pipe assembly 31 through the gap, thereby lifting the stones inside the screen pipe assembly 31 for cleaning. A top wheel 34 is provided at the end of the impact rod 32 away from the cleaning tank 17, and a return spring 33 is provided between the top wheel 34 and the outer wall of the cleaning tank 17. The return spring 33 is sleeved on the outside of the impact rod 32. The impact rod 32 is pushed outward, and a centrally raised arc-shaped protrusion 35 is provided in the middle of the placing table 1. Therefore, when the impact top rod 14 rotates downward, the top wheel 34 at the lower end of the impact rod 32 will roll on the arc-shaped protrusion 35. At this time, the impact rod 32 will be pushed upward, and the impact rod 32 is inserted into the interior of the screening tube assembly 31. As the cleaning tank 17 continues to rotate, the top wheel 34 disengages from the arc-shaped protrusion 35. At this time, under the action of the reset spring 33, the impact rod 32 moves outward, and the end of the impact rod 32 located inside the cleaning tank 17 moves to the gap between the cleaning tank 17 and the screening tube assembly 31, so that the internal ore continues to roll without hindrance.

[0025] In one case of this embodiment, the screening pipe assembly 31 includes a support plate 28 fixedly connected to the inner wall of the cleaning tank 17, the support plate 28 is fixedly connected to a support ring 29 arranged along the circumference of the cleaning tank 17, and the support ring 29 is evenly distributed with a stopper 30 parallel to the axis of the cleaning tank 17, and the impact rod 32 penetrates the gap between two adjacent stoppers 30 when moving. The gap between the two adjacent stoppers 30 achieves a screening effect, so that small particles of stone can pass through the gap and fall to the bottom of the cleaning tank 17, and impurities such as mud and sand can also achieve a screening effect, and the stoppers 30 are in a parallel state along the left and right directions, and the impact rods 32 are also arranged in a linear array along the left and right directions, so the impact rods 32 can just pass through the gap between the two adjacent stoppers 30 and enter the interior of the screening pipe assembly 31.

[0026] In one case of the present embodiment, a crossbeam 26 is provided in the middle of the support leg 16, the crossbeam 26 is arranged in a front-to-rear direction, and the front and rear ends of the crossbeam 26 are fixedly connected to the middle of the two left support legs 16, and a second drive motor 24 is provided above the crossbeam 26, and the output shaft of the second drive motor 24 is fixedly connected to the driving gear 25, and the driving gear 25 is meshedly connected to the driven gear 23, and the driven gear 23 is a ring structure fixed at the left end of the cleaning tank 17, so the second drive motor 24 can rotate the cleaning tank 17 by gear transmission.

[0027] In one case of the present embodiment, a lifting cylinder 22 is provided on the side wall of the cleaning tank 17, and a lifting cylinder 22 is provided on the front and rear side walls on the left and right sides of the cleaning tank 17. The piston rod of the lifting cylinder 22 extends in a direction away from the center of the cleaning tank 17, and the piston rod of the lifting cylinder 22 is fixedly connected to the front and rear sides of the end cover 18. Therefore, when the piston rod of the lifting cylinder 22 is extended or retracted, the end cover 18 can move left and right, thereby realizing the opening and closing of the end of the cleaning tank 17. In order to facilitate the stable movement of the end cover 18, a fixed block 20 is also provided on the outer side of the cleaning tank 17. The fixed block 20 is slidably connected to a horizontally arranged guide slide bar 21, and the end of the guide slide bar 21 is fixedly connected to the end cover 18, thereby avoiding the problem of damage to the piston rod of the lifting cylinder 22 due to lateral force. A limiting hole 27 is provided on one side of the end cover 18 close to the cleaning tank 17. When the end cover 18 is buckled on the end of the cleaning tank 17, the shift rod 30 can be inserted into the limiting hole 27, so that both ends of the shift rod 30 are limited, and the stability of the shift rod 30 is better. A connecting flange 19 is provided on the side of the end cover 18. The positions of the connecting flanges 19 on both sides are the same. A throttle valve is provided inside the connecting flange 19, and the connecting flange 19 itself can be connected to a water pipe, so that clean water can enter from the connecting flange 19 on the right, and dirty water can be discharged through the connecting flange 19 on the left.

[0028] In one case of the present embodiment, the flipping and lifting mechanism 3 includes a fixed support 4 arranged at one end of the placing table 1, the fixed support 4 is arranged on the left side below the placing table 1, and a rotating seat 5 is arranged at the upper end of the fixed support 4. The placing table 1 can rotate forward and flip along the rotating seat 5, and two auxiliary supports 6 arranged in front and back directions are arranged on the right side of the fixed support 4. When the placing table 1 is rotated to a horizontal state, the middle and right end of the placing table 1 are respectively in contact with the two auxiliary supports 6, so that the auxiliary supports 6 play a supporting effect, and in order to improve the strength of the structure, horizontal reinforcing support rods 7 are arranged at the bottom and front and rear sides of the auxiliary support 6 and the fixed support 4. The stability is improved by the reinforcing support rods 7, and a lifting assembly 8 is arranged between the two auxiliary supports 6. The lifting assembly 8 will push the placing table 1 to rotate, thereby achieving the effect of pitch adjustment of the placing table 1. The lifting assembly 8 includes a lifting screw rod 12 arranged in a left and right direction, and the left and right ends of the lifting screw rod 12 are rotatably connected to the middle part of the auxiliary support 6, and threads with opposite rotation directions are arranged on the left and right sides of the lifting screw rod 12, and the left and right sides of the lifting screw rod 12 are threadedly connected with push blocks 13 arranged in a front and back direction, and the front and back sides of the upper end of the push block 13 are rotatably connected to the lower end of the push rod 14, and the upper end of the push rod 14 is rotatably connected to the left and right sides of the lower surface of the push block 15, and the top of the push block 15 is an arc surface structure, so when the lifting screw rod 12 rotates, the two push blocks 13 move closer to each other or move away from each other, so that the push block 15 moves up and down, and when the push block 15 moves upward, it will push the placement table 1 to rotate counterclockwise, and when the push block 15 moves downward, the placement table 1 will rotate clockwise, thereby realizing the pitch adjustment of the placement table 1. A first drive motor 9 is arranged on the auxiliary support 6 on the left side, and the output shaft of the first drive motor 9 is fixedly connected to the first bevel gear 10, the first bevel gear 10 is meshedly connected to the second bevel gear 11, and the second bevel gear 11 is fixedly connected to the left end of the jacking screw rod 12. Therefore, the first drive motor 9 rotates the jacking screw rod 12 through gear transmission, thereby achieving the effect of adjusting the pitch angle of the placement table 1.

[0029] During the implementation of this embodiment, the flip lifting mechanism 3 is stably placed on the ground, the left and right lifting cylinders 22 are started, the piston of the left lifting cylinder 22 is contracted, the left end cover 18 is buckled on the left end of the cleaning tank 17, the right end cover 18 is opened, the first drive motor 9 is started, the placement table 1 rotates counterclockwise, the cleaning tank 17 rotates to a state facing the upper right, and the ore to be cleaned is poured into the interior of the screening pipe assembly 31 through the feeding equipment, the right lifting cylinder 22 is started in reverse, the right end cover 18 closes the right end of the cleaning tank 17, and the first drive motor 9 is started in reverse, and the placement table 1 rotates to a horizontal state and falls on the auxiliary support 6.

[0030] For cleaning, close the left connecting flange 19, connect the right connecting flange 19 to the clean water pipe, and pour clean water into the cleaning tank 17. When the clean water level reaches one-third of the height inside the cleaning tank 17, stop filling, close the right connecting flange 19, and remove the clean water pipe. At this time, start the second drive motor 24, and the second drive motor 24 drives the cleaning tank 17 to rotate. As the cleaning tank 17 rotates, the ore rolls inside the screening tube assembly 31, and the mud and sand attached to the surface of the ore fall off. When the top wheel 34 rotates to the bottom, the top wheel 34 contacts the arc-shaped protrusion 35, and the impact rod 32 moves upward quickly. The impact rod 32 will lift the ore upward, which, on the one hand, allows the ores to move relative to each other so that the attached mud and sand can fall off quickly. On the other hand, if multiple pieces of ores are attached together by mud and sand, the impact rod 32 will disperse the ore, thereby The block structure composed of multiple pieces of ore is broken up, and the effect of mud and sand separation is further improved. After the cleaning tank 17 rotates for a period of time, the connecting flange 19 on the left can be connected to the sewage pipe, and the connecting flange 19 on the right can be connected to the clean water pipe, and the connecting flange 19 on the right can be opened. At this time, the clean water flows from right to left through the bottom of the cleaning tank 17, thereby taking away the sewage at the bottom of the cleaning tank 17, and during the cleaning process, the second drive motor 24 can be slightly started, so that the cleaning tank 17 can be slightly shaken back and forth to improve the discharge efficiency of mud and sand. When the sewage is clearer, the connecting flange 19 on the left can be closed, and clean water can continue to be injected into the interior of the cleaning tank 17. When the water level reaches one-third of the interior of the cleaning tank 17, the connecting flange 19 on the right can be closed again and the sewage pipe and the clean water pipe can be removed. At this time, the cleaning tank 17 can continue to rotate normally to perform a second cleaning of the ore.

[0031] For impurity discharge treatment, after the ore cleaning is completed, the connecting flange 19 on the left is connected to the sewage pipe, and the first drive motor 9 is started. The placing table 1 rotates counterclockwise, and the connecting flanges 19 on the left and right sides are opened. The sewage and mud are completely discharged through the sewage pipe on the left. The placing table 1 is rotated to a horizontal state again, the connecting flange 19 is closed and the sewage pipe is removed. At this time, the container for storing the ore is placed on the left side of the cleaning device, the lifting cylinder 22 on the left is opened, the end cover 18 on the left is opened, and the placing table 1 is rotated counterclockwise. At this time, the ore inside the screening tube assembly 31 will slide to the left and fall into the container, thereby realizing the discharge processing.

[0032] The present invention is applicable to an ore surface cleaning device, which improves the utilization rate of water resources by placing the ore in a cleaning tank 17 for tumbling cleaning. The up and down movement of the impact rod 32 can improve the cleaning efficiency and thus improve the utilization rate of clean water. On the other hand, it can also break up ore agglomerates and improve the cleaning effect.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A device for cleaning the surface of an ore, characterized in that: It includes a placement table, a rotating cleaning mechanism and a flipping and lifting mechanism; The flip lifting mechanism is arranged on the side of the placing table close to the ground, and is used to support the placing table and adjust the inclination angle of the placing table; The rotary cleaning mechanism comprises legs arranged on both sides of the placing platform, the ends of the legs are rotatably connected to the cleaning tank, the cleaning tank is a tubular structure open at both ends, and end covers that move laterally are arranged at both ends of the cleaning tank, a screening pipe assembly that is coaxially arranged with the cleaning tank and rotates synchronously with the cleaning tank is arranged inside the cleaning tank, the screening pipe assembly is a tubular structure open at both ends, the side wall of the cleaning tank is slidably connected with an impact rod that is radially arranged relative to the axis line of the cleaning tank, the impact rod is arranged in a circular array and a linear array along the axis line of the cleaning tank, a top wheel is arranged at the end of the impact rod away from the cleaning tank, a reset spring is arranged between the top wheel and the outer wall of the cleaning tank, an arc-shaped protrusion that cooperates with the top wheel is arranged in the middle of the placing platform, when the top wheel contacts the arc-shaped protrusion, the impact rod corresponding to the top wheel passes through the gap of the screening pipe assembly and moves to the inside of the screening pipe assembly, and when the top wheel is separated from the arc-shaped protrusion, the reset spring drives the end of the impact rod to move between the screening pipe assembly and the cleaning tank.

2. The ore surface cleaning device according to claim 1, characterized in that: The screening tube assembly includes a support plate fixedly connected to the inner wall of the cleaning tank, the support plate is fixedly connected to a support ring arranged along the circumference of the cleaning tank, and the support ring is evenly distributed with gear rods parallel to the axis of the cleaning tank. When the impact rod moves, it passes through the gap between two adjacent gear rods.

3. The ore surface cleaning device according to claim 1, characterized in that: A crossbeam is arranged in the middle of the supporting leg, a second driving motor is arranged in the middle of the crossbeam, an output shaft of the second driving motor is fixedly connected with a driving gear, and the driving gear is meshingly connected with a driven gear fixedly connected with the outer wall of the cleaning tank.

4. The ore surface cleaning device according to claim 1, characterized in that: The side wall of the cleaning tank is provided with a lifting cylinder, the piston rod of the lifting cylinder is fixedly connected to the end cover, the outer edge of the end cover is fixedly connected to the guide slide bar, and the side of the guide slide bar away from the end cover is slidably connected to a fixed block fixedly connected to the outer wall of the cleaning tank.

5. The ore surface cleaning device according to claim 2, characterized in that: A limiting hole cooperating with the shift rod is arranged on one side of the end cover close to the cleaning tank, and a connecting flange is arranged on the side of the end cover.

6. The ore surface cleaning device according to claim 1, characterized in that: The flipping and lifting mechanism includes a fixed support arranged at one end of the placing table, the fixed support is provided with a rotating seat rotatably connected to the placing table, two parallel auxiliary supports are provided on the side of the placing table away from the fixed support, the auxiliary support and the fixed support are respectively fixedly connected to the two sides of the reinforcing support rod, and a lifting component for driving the placing table to rotate is provided between the two auxiliary supports. When the placing table is rotated to a horizontal state, the placing table fits with the end of the auxiliary support.

7. The ore surface cleaning device according to claim 6, characterized in that: The jacking assembly includes a jacking screw rod rotatably connected to the middle part of the auxiliary support, and threads with opposite rotation directions are arranged on both sides of the jacking screw rod. The threads on both sides of the jacking screw rod are connected to push blocks, and the push block is rotatably connected to one end of the jacking rod. The other end of the jacking rod is rotatably connected to a jacking block that cooperates with the placing table. The auxiliary support is provided with a first driving motor, and the output shaft of the first driving motor is fixedly connected to the first bevel gear, and the first bevel gear is meshedly connected to the second bevel gear fixedly connected to the jacking screw rod.

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