Automatic grouping and stacking machine for metal meshes

Abstract

The utility model belongs to the technical field of stackers, and discloses a metal mesh automatic grouping stacker which comprises a main body support, a metal mesh temporary storage position is arranged at the position, close to the upper end of the main body support, of the main body support, and a grouping and bundling assembly used for quantitatively grouping and bundling metal meshes is arranged below the metal mesh temporary storage position. A lifting frame is arranged in the middle of the body support and located below the grouping and bundling assembly, and a lifting driving assembly used for driving the lifting frame to ascend and descend is arranged on the body support. A pulling assembly and a counting assembly are arranged at the positions, corresponding to the feeding side, of the main body support, the pulling assembly is started to pull the metal meshes so that the metal meshes can stably move to the two temporary storage positions, and the counting assembly is used for counting the metal meshes on the temporary storage positions and controlling the grouping and bundling assembly to work; according to the metal mesh stacking device, the metal meshes can be stacked, and the metal meshes can be grouped and bound in the stacking process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the stacking machine technical field, specifically speaking, relate to a kind of metal mesh automatic grouping stacking machine. BACKGROUND

[0002] Metal mesh is a mesh-shaped structure made of steel bar by binding or welding, which is usually formed by the longitudinal and transverse intersection of parallel steel bars, forming a grid structure. After the production of metal mesh is completed, the metal mesh needs to be stacked and arranged in the warehouse. This can effectively utilize the warehouse space, improve the storage density, reduce space waste, and facilitate the transportation and transfer of metal mesh.

[0003] Patent application number CN110789194.8 discloses a steel mesh stacking device and a stacking method. The steel mesh stacking device includes a frame structure, a Z-axis moving mechanism, an X-axis moving mechanism, a grabbing mechanism and a PLC control mechanism. The frame structure is a cuboid structure, and it has a grabbing position and a stacking position along the length direction. The X-axis moving mechanism is arranged on the top of the frame structure and is connected to the two parallel long sides of the frame structure vertically. The Z-axis moving mechanism is arranged on the X-axis moving mechanism and can move up and down relative to the X-axis moving mechanism. The grabbing mechanism is connected to the bottom of the Z-axis moving mechanism and can move with the Z-axis moving mechanism. The PLC control mechanism is electrically connected to the X-axis moving mechanism, the Z-axis moving mechanism and the grabbing mechanism.

[0004] The existing stacking device uses a mechanical gripper to grab the steel mesh and then transports it to the stacking position for stacking. The overall structure is complex, and the steel mesh cannot be grouped during stacking, which reduces the use effect. The existing stacking device has a single function, and a pusher mechanism needs to be added to make the two sides of the stacked steel mesh flush during stacking, which makes the overall structure complex and reduces the use effect. UTILITY MODEL CONTENTS

[0005] The main technical problem to be solved by the utility model is to provide a metal mesh automatic grouping stacking machine with a simple overall structure, which can stack the produced metal mesh and group the metal mesh during stacking, making the stacked metal mesh more regular and stable, and improving the use effect.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of metal mesh automatic grouping stacker, including main support, metal mesh temporary storage position is set on main support near its upper end position, the grouping and bundling component for quantitatively grouping and bundling to metal mesh is set in the below of metal mesh temporary storage position, the middle part of main support and below the grouping and bundling component are provided with lifting frame, lifting drive component is set on main support for driving lifting frame to move up and down;Pulling component and counting component are set on main support corresponding to the position of feeding side, pulling component is started for pulling metal mesh, so that metal mesh moves stably to two temporary storage positions, counting component is used to count the metal mesh on temporary storage position, and controls the work of grouping and bundling component.

[0008] The following is the further optimization of the technical solution of the utility model:

[0009] Two temporary storage plates are set on the position of temporary storage position of main support, temporary storage plate is L-shaped structure, and two temporary storage plates are symmetrically arranged, and temporary storage plate is hingedly installed on main support.

[0010] Further optimization: first automatic telescopic rod is set on the outside below temporary storage plate of main support, and the telescopic end of first automatic telescopic rod is hingedly connected with the lower surface of temporary storage plate.

[0011] Further optimization: the pulling component includes pulling mounting frame, second automatic telescopic rod is fixedly installed on pulling mounting frame, second automatic telescopic rod is arranged along the moving direction of metal mesh, and movable pull rod is fixedly connected to the telescopic end of second automatic telescopic rod, and swing pull rod is hingedly connected to the other end of movable pull rod.

[0012] Further optimization: the swing pull rod is vertically arranged in the initial state, and the swing pull rod can only swing unidirectionally to the side close to movable pull rod, and cannot swing to the side away from movable pull rod.

[0013] Further optimization: the counting component includes counter, and the counter is fixedly installed on main support through counting mounting frame, when pulling component pulls metal mesh to move to the position of counter, the counter is used to count the metal mesh once.

[0014] Further optimization: the grouping and bundling component includes two groups of temporary rod groups, and the two groups of temporary rod groups are symmetrically arranged and respectively arranged below temporary storage plate, each group of temporary rod group includes a movable rod, the movable rod is arranged on the outside of main support, a plurality of temporary rods are fixedly installed on movable rod, the plurality of temporary rods are parallel and spaced, and the temporary rod and movable rod are vertically arranged.

[0015] Further optimization: the third automatic telescopic rod is fixedly installed at the position corresponding to the two movable rods on the main support, and the telescopic end of the third automatic telescopic rod is fixedly connected with the corresponding movable rod; the third automatic telescopic rod is used for driving the movable rod to move, and the movable rod drives the temporary storage rod to move, so that the end of the temporary storage rod away from the movable rod moves to the middle or the outside of the main support.

[0016] Further optimization: the temporary storage rod on the two sides of the main support is provided with a bundling device, and the bundling device is used for bundling the metal mesh group.

[0017] Further optimization: the lifting driving assembly comprises a driving motor fixedly installed on the main support, a driving rope wheel fixedly installed on the power output end of the driving motor, four steel wires wound on the driving rope wheel, a first fixed pulley fixedly installed on each of the four corners of the lifting frame, and a second fixed pulley fixedly installed on the main support at a position corresponding to the first fixed pulley; the first fixed pulley and the second fixed pulley corresponding to each other form a fixed pulley set; and the free ends of the four steel wires pass through the first fixed pulley and the second fixed pulley of the four fixed pulley sets and are fixedly installed on the main support.

[0018] The utility model discloses the above-mentioned technical scheme, clever design, reasonable structure can be to the metal mesh of production completion and be stacked, and in the stacking process to the metal mesh grouping binding, make the metal mesh of stacking completion more regular and stable, improve use effect, whole structure is simple, convenient to use, and the overall degree of automation is high, improve use effect and stacking rate, reduce production cost.

[0019] In the utility model, two temporary storage plates are used for temporarily storing the metal mesh of production completion, then when the first automatic telescopic rod works to drive the two temporary storage plates to overturn downward about the supporting shaft, the metal mesh on the temporary storage plate falls downward and falls on the grouping and bundling assembly; when a certain amount of metal mesh falls on the grouping and bundling assembly, the bundling device is used for bundling the certain amount of metal mesh to form a metal mesh group, then the third automatic telescopic rod works to drive the temporary storage rod to move, so that the metal mesh group loses support and falls on the lifting frame, at this time, the lifting frame is used for stacking the metal mesh group, and the driving motor works through the driving rope wheel to synchronously rewind or unwind the four steel wires, at this time, the four steel wires are used for driving the lifting frame to move up and down through the cooperation of the first fixed pulley and the second fixed pulley, which is convenient to use.

[0020] The utility model is further illustrated below in connection with the drawings and examples. DRAWINGS

[0021] Figure 1 It is the overall structure schematic view of the utility model embodiment;

[0022] Figure 2 It is another view of the structure of the overall structure in the embodiment of the utility model and a structure diagram.

[0023] Figure 3 It is a structure diagram of the grouping and bundling assembly in the embodiment of the utility model.

[0024] Figure 4 It is another view of the structure of the grouping and bundling assembly in the embodiment of the utility model and a structure diagram.

[0025] Figure 5 It is a structure diagram of the lifting driving assembly in the embodiment of the utility model.

[0026] In the figure: 1 - main support; 2 - lifting frame; 3 - temporary storage plate; 4 - support shaft; 5 - first automatic telescopic rod; 6 - support connecting rod; 7 - pulling mounting frame; 8 - second automatic telescopic rod; 9 - moving pull rod; 10 - swing pull rod; 11 - counter; 12 - moving rod; 13 - third automatic telescopic rod; 14 - temporary storage rod; 15 - bundling device; 16 - limit baffle; 17 - slide rail; 18 - driving motor; 19 - driving rope wheel; 20 - first fixed pulley; 21 - second fixed pulley; 22 - steel wire rope; 23 - roller conveyor; 24 - roller conveyor support; 25 - conveying roller; 26 - roller motor. DETAILED DESCRIPTION

[0027] As Figures 1-5 shown: a kind of metal mesh automatic grouping and stacking machine, including main support 1, metal mesh temporary storage position is set on the main support 1 near its upper end position, the lower of metal mesh temporary storage position is provided with the grouping and bundling assembly for the quantitative grouping and bundling of metal mesh, the middle part of main support 1 and below the grouping and bundling assembly is provided with lifting frame 2, main support 1 is provided with lifting driving assembly for driving lifting frame 2 to move up and down.

[0028] The main support 1 is provided with two temporary storage plates 3 at the position of temporary storage position, the temporary storage plate 3 is L-shaped structure, and the two temporary storage plates 3 are symmetrically arranged, and the temporary storage plate 3 is hingedly installed on the main support 1.

[0029] The temporary storage plate 3 is fixedly connected with a support shaft 4 at the corner thereof, and the two ends of the support shaft 4 are rotatably connected with bearing seats, and the bearing seats are fixedly installed on the main support 1.

[0030] In this way, the temporary storage plate 3 is hingedly installed on the main support 1 through the cooperation of the support shaft 4 and the bearing seat, facilitating assembly and installation.

[0031] In the initial state, the lower plates of the two temporary storage plates 3 are horizontally arranged, and the upper plates are vertically arranged, at this time, the temporary storage position is formed between the two temporary storage plates 3, and the spacing between the upper plates of the two temporary storage plates 3 matches the width of the metal mesh, the produced metal mesh is transported to the two temporary storage plates 3, and when the two temporary storage plates 3 are overturned downward around the supporting shaft 4, the metal mesh on the temporary storage plate 3 will fall downward and fall onto the grouping and bundling assembly.

[0032] The first automatic telescopic rod 5 is arranged on the main support 1 below the outside of the temporary storage plate 3, and the telescopic end of the first automatic telescopic rod 5 is hinged to the lower surface of the temporary storage plate 3.

[0033] The mounting end of the first automatic telescopic rod 5 is hinged to the supporting connecting rod 6, and the other end of the supporting connecting rod 6 is fixedly mounted on the main support 1. The first automatic telescopic rod 5 is mounted on the main support 1 through the supporting connecting rod 6, which facilitates assembly and installation.

[0034] The first automatic telescopic rod 5 is one of a telescopic cylinder, a hydraulic cylinder and an electric telescopic rod.

[0035] The main support 1 is provided with a pulling assembly and a counting assembly at a position corresponding to the feeding side, the pulling assembly is started to pull the metal mesh, so that the metal mesh moves smoothly onto the two temporary storage plates 3, and the counting assembly counts the metal mesh on the temporary storage plate 3 and controls the grouping and bundling assembly to work.

[0036] The pulling assembly comprises a pulling mounting frame 7, and the second automatic telescopic rod 8 is fixedly mounted on the pulling mounting frame 7. The second automatic telescopic rod 8 is arranged along the moving direction of the metal mesh, and the telescopic end of the second automatic telescopic rod 8 is fixedly connected with a moving pull rod 9, and the other end of the moving pull rod 9 is hinged with a swing pull rod 10.

[0037] The swing pull rod 10 is vertically arranged in the initial state, and the swing pull rod 10 can only swing in one direction. The swing pull rod 10 can swing towards the side close to the moving pull rod 9, and cannot swing away from the moving pull rod 9. The swing pull rod 10 and the moving pull rod 9 are positioned by the protruding part, and this technology is prior art.

[0038] When the metal mesh needs to be pulled, the telescopic end of the second automatic telescopic rod 8 is extended to drive the moving pull rod 9 to move the swing pull rod 10, when the swing pull rod 10 touches the metal mesh, the swing pull rod 10 swings to the side close to the moving pull rod 9, then the lower end of the swing pull rod 10 is inserted into the mesh of the metal mesh, and then the telescopic end of the second automatic telescopic rod 8 is retracted to pull the moving pull rod 9 to move the swing pull rod 10, at this time the swing pull rod 10 is used to pull the metal mesh, and the metal mesh is moved to the two temporary storage plates 3.

[0039] The second automatic telescopic rod 8 is one of a telescopic air cylinder, a hydraulic cylinder and an electric telescopic rod.

[0040] The counting assembly includes a counter 11, and the counter 11 is fixedly installed on the main support 1 through a counting mounting bracket; when the pulling assembly pulls the metal mesh to the position of the counter 11, the counter 11 is used to count the metal mesh once.

[0041] The grouping and bundling assembly includes two groups of temporary storage rod groups, the two groups of temporary storage rod groups are symmetrically arranged and are arranged below the temporary storage plates 3, each group of temporary storage rod groups includes a moving rod 12, the moving rod 12 is arranged outside the main support 1, a plurality of temporary storage rods 14 are fixedly installed on the moving rod 12, the plurality of temporary storage rods 14 are parallel and arranged at intervals, and the temporary storage rods 14 are vertically arranged with the moving rod 12.

[0042] Third automatic telescopic rods 13 are fixedly installed at positions corresponding to the two moving rods 12 on the main support 1, and telescopic ends of the third automatic telescopic rods 13 are fixedly connected with the corresponding moving rods 12.

[0043] The third automatic telescopic rod 13 is used to drive the moving rod 12 to move, at this time the moving rod 12 drives the temporary storage rods 14 to move, and one end of the temporary storage rods 14 away from the moving rod 12 moves to the middle or outside of the main support 1.

[0044] When one end of the temporary storage rods 14 away from the moving rod 12 moves to the middle of the main support 1, a bundling temporary storage position is formed above the plurality of temporary storage rods 14, and the metal mesh falling in the flipping process of the temporary storage plate 3 falls on the bundling temporary storage position above the plurality of temporary storage rods 14, at this time the bundling temporary storage position is used to count and temporarily store the metal mesh.

[0045] The third automatic telescopic rod 13 is one of a telescopic air cylinder, a hydraulic cylinder and an electric telescopic rod.

[0046] A limiting baffle 16 is fixedly installed at a position close to the temporary storage rods 14 on the inside of the main support 1, and the limiting baffle 16 is used to block the metal mesh.

[0047] The temporary storage rod 14 on both sides of the main support 1 is provided with a bundling device 15, which is used for bundling the metal mesh group.

[0048] In this way, in the embodiment, taking ten metal meshes as a metal mesh group, the working process is that the produced metal meshes are conveyed to the positions of the two temporary storage plates 3, and the metal meshes are moved to the two temporary storage plates 3 through the cooperation of the pulling assembly, at this time, the counter 11 is used for counting the metal meshes once, and then the first automatic telescopic rod 5 is used for driving the temporary storage plate 3 to overturn, so that the metal meshes on the temporary storage plate 3 fall onto the temporary storage rod 14.

[0049] The above steps are repeated ten times, at this time, the temporary storage rod 14 is stacked with ten metal meshes, and the ten metal meshes are a metal mesh group, at this time, the bundling device 15 is used for bundling the ten metal meshes, after the bundling is completed, the third automatic telescopic rod 13 is used for driving the moving rod 12 to move, at this time, the moving rod 12 drives the temporary storage rod 14 to move, so that the temporary storage rod 14 moves to the outside of the main support 1, at this time, the metal mesh group on the temporary storage rod 14 loses support and falls downward to the lifting frame 2, the lifting frame 2 is used for stacking the metal mesh group, and then the lifting frame 2 moves downward by a distance for the next time of falling of the metal mesh group.

[0050] The lifting frame 2 is a square frame, the main support 1 is provided with a sliding rail 17 on both sides of the lifting frame 2, and a sliding block is slidingly installed in the sliding rail 17 and fixedly connected to the side of the lifting frame 2.

[0051] In this way, the cooperation of the sliding rail 17 and the sliding block can guide the lifting movement of the lifting frame 2, so that the lifting frame 2 is more stable during the lifting movement.

[0052] The lifting driving assembly comprises a driving motor 18 fixedly installed on the main support 1, and the power output end of the driving motor 18 is in transmission connection with the lifting frame 2 through four groups of driving ropes for driving the lifting frame 2 to move up and down.

[0053] The driving rope group comprises a driving rope wheel 19 fixedly installed on the power output end of the driving motor 18, and a first fixed pulley 20 is fixedly installed at each of the four corners of the lifting frame 2, and a second fixed pulley 21 is fixedly installed on the main support 1 at a position corresponding to the first fixed pulley 20; the first fixed pulley 20 and the second fixed pulley 21 corresponding to each other form a fixed pulley group.

[0054] The driving rope wheel 19 is provided with four steel wire ropes 22, one end of each steel wire rope 22 is fixedly installed on the driving rope wheel 19, and the free end of each steel wire rope 22 passes through the first fixed pulley 20 and the second fixed pulley 21 of each set of pulley blocks and is fixedly installed on the main support 1 on the side corresponding to the second fixed pulley 21.

[0055] In this way, the driving motor 18 is used to drive the driving rope wheel 19 to rotate, the driving rope wheel 19 is used to rewind or unwind the four steel wire ropes 22 synchronously, and the four steel wire ropes 22 are fixedly installed on the main support 1, so that the four steel wire ropes 22 can drive the lifting frame 2 to move up and down during rewinding or unwinding.

[0056] In use, the lifting frame 2 is parked at a position below the temporary storage rod 14, and the upper end surface of the lifting frame 2 is spaced apart from the lower end surface of the temporary storage rod 14 by a distance, and the height of the distance is greater than the height of each set of metal mesh groups. The third automatic telescopic rod 13 drives the moving rod 12 to drive the temporary storage rod 14 to move, so that the metal mesh groups on the temporary storage rod 14 fall downward onto the lifting frame 2, and the lifting frame 2 is parked below the temporary storage rod 14, which can reduce the impact force when the metal mesh groups fall and improve the stacking effect.

[0057] Then the driving motor 18 drives the driving rope wheel 19 to rotate and synchronously unwind the steel wire ropes 22, at this time the lifting frame 2 moves downward by a distance, and the moving distance is greater than the height of each set of metal mesh groups, which facilitates the stacking of the next set of metal mesh groups.

[0058] In addition to the embodiment, the lifting drive assembly can also use a plurality of automatic telescopic rods, the automatic telescopic rods are vertically arranged, the installation end of each automatic telescopic rod is fixedly installed on the main support 1, and the telescopic end of each automatic telescopic rod is downwardly arranged and fixedly connected with the lifting frame 2. The automatic telescopic rod is used to drive the lifting frame 2 to move up and down.

[0059] The automatic telescopic rod is one of a telescopic cylinder, a hydraulic cylinder, and an electric telescopic rod.

[0060] The main support 1 is provided with a roller conveyor 23 at the middle portion and below the lifting frame 2, the roller conveyor 23 extends to the outside of the main support 1, the metal mesh stack stacked on the lifting frame 2 is placed on the roller conveyor 23, and the roller conveyor 23 is used to convey the stacked metal mesh stack, which is convenient to use.

[0061] The roller conveying device 23 comprises a roller conveying support 24, one end of the roller conveying support 24 is arranged at the middle of the main body support 1, the other end of the roller conveying support 24 is located outside the main body support 1, a plurality of conveying rollers 25 are rotatably arranged on the roller conveying support 24, and the plurality of conveying rollers 25 are arranged in parallel and at intervals.

[0062] The roller conveying support 24 is fixedly provided with a roller motor 26, two adjacent conveying rollers 25 are connected through a chain transmission assembly, a power output end of the roller motor 26 is connected with one end of any one of the conveying rollers 25 through the chain transmission assembly, the roller motor 26 drives the plurality of conveying rollers 25 to rotate in the same direction through the cooperation of the chain transmission assembly, and at this time, the plurality of conveying rollers 25 are used for conveying the completed metal mesh pile.

[0063] In the embodiment, the diameter of the conveying roller 25 is greater than the overall height of the lifting frame 2, when the lifting frame 2 is lowered to the lowest position, the lifting frame 2 is arranged on the roller conveying support 24, at this time, the lower end of the metal mesh pile is arranged on the conveying roller 25, and the conveying roller 25 is rotated to drive the metal mesh pile to be conveyed.

[0064] For those skilled in the art, according to the teaching of the present application, the changes, modifications, replacements and variations of the embodiments without departing from the principles and spirits of the present application still fall within the protection scope of the present application.

Claims

1. A metal sheet automatic grouping and stacking machine comprising a main body support (1), characterized in that: The metal mesh temporary storage position is provided on the main support (1) near the upper end position thereof, a grouping and bundling assembly for grouping and bundling the metal mesh in a quantitative manner is provided below the metal mesh temporary storage position, a lifting frame (2) is provided at the middle of the main support (1) and below the grouping and bundling assembly, and a lifting driving assembly for driving the lifting frame (2) to move up and down is provided on the main support (1); a pulling assembly and a counting assembly are provided on the main support (1) at positions corresponding to the feeding side, the pulling assembly is started to pull the metal mesh to move stably to the two temporary storage positions, and the counting assembly is used to count the metal mesh on the temporary storage position and control the grouping and bundling assembly to work.

2. The automatic grouping and stacking machine for metal mesh according to claim 1, characterized in that: Two temporary storage plates (3) are provided on the main support (1) at positions of the temporary storage positions, the temporary storage plates (3) are L-shaped structures, and the two temporary storage plates (3) are symmetrically arranged, and the temporary storage plates (3) are hingedly installed on the main support (1).

3. The automatic grouping and stacking machine for metal mesh according to claim 2, characterized in that: A first automatic telescopic rod (5) is provided on the main support (1) below the outer side of the temporary storage plate (3), and the telescopic end of the first automatic telescopic rod (5) is hingedly connected with the lower surface of the temporary storage plate (3); the first automatic telescopic rod (5) is started to drive the temporary storage plate (3) to flip.

4. The automatic grouping and stacking machine for metal mesh according to claim 3, characterized in that: The pulling assembly comprises a pulling mounting frame (7), a second automatic telescopic rod (8) is fixedly installed on the pulling mounting frame (7), the second automatic telescopic rod (8) is arranged along the moving direction of the metal mesh, a moving pull rod (9) is fixedly connected to the telescopic end of the second automatic telescopic rod (8), and a swing pull rod (10) is hingedly connected to the other end of the moving pull rod (9).

5. The automatic grouping and stacking machine for metal mesh according to claim 4, characterized in that: The swing pull rod (10) is vertically arranged in the initial state, and the swing pull rod (10) can only swing unidirectionally to the side close to the moving pull rod (9) and cannot swing to the side away from the moving pull rod (9).

6. The automatic grouping and stacking machine for metal mesh according to claim 5, characterized in that: The counting assembly comprises a counter (11), the counter (11) is fixedly installed on the main support (1) through a counting mounting frame, and the counter (11) is used to count the metal mesh once when the metal mesh is pulled by the pulling assembly to move to the position of the counter (11).

7. The automatic grouping and stacking machine for metal mesh according to claim 6, characterized in that: The grouping and bundling assembly comprises two groups of temporary storage rod groups, the two groups of temporary storage rod groups are symmetrically arranged and are respectively arranged below the temporary storage plates (3), each group of temporary storage rod groups comprises a moving rod (12) arranged on the outer side of the main support (1), a plurality of temporary storage rods (14) are fixedly installed on the moving rod (12), the plurality of temporary storage rods (14) are parallel and arranged at intervals, and the temporary storage rods (14) and the moving rod (12) are vertically arranged.

8. The automatic grouping and stacking machine for metal mesh according to claim 7, characterized in that: Third automatic telescopic rods (13) are fixedly installed on the main support (1) at positions corresponding to the two moving rods (12), the telescopic ends of the third automatic telescopic rods (13) are respectively fixedly connected with the corresponding moving rods (12); the third automatic telescopic rods (13) are used to drive the moving rods (12) to move, the moving rods (12) drive the temporary storage rods (14) to move, and one end of the temporary storage rods (14) away from the moving rods (12) moves to the middle or the outer side of the main support (1).

9. The automatic grouping and stacking machine for metal mesh according to claim 8, characterized in that: The temporary storage rods (14) on both sides of the main support (1) are respectively provided with a bundling device (15) for bundling the metal mesh groups.

10. The automatic grouping and stacking machine for metal mesh according to claim 9, characterized in that: The lifting driving assembly comprises a driving motor (18) fixedly installed on the main support (1), a driving rope wheel (19) fixedly installed on the power output end of the driving motor (18), four steel wire ropes (22) wound on the driving rope wheel (19), a first fixed pulley (20) fixedly installed on each of the four corners of the lifting frame (2), and a second fixed pulley (21) fixedly installed on the main support (1) at a position corresponding to the first fixed pulley (20). The first fixed pulley (20) and the second fixed pulley (21) corresponding to each other constitute a fixed pulley set. The free ends of the four steel wire ropes (22) are respectively wound around the first fixed pulley (20) and the second fixed pulley (21) of the four fixed pulley sets and fixedly installed on the main support (1).

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