An intelligent punching machine for tea planting

Abstract

The present invention relates to the field of tea planting equipment, and in particular to an intelligent punching machine for tea planting, comprising a vehicle body, a frame installed on the side wall of the vehicle body, a seat arranged on the right side of the top of the vehicle body, a mounting frame arranged on the middle side of the top of the vehicle body, guide rods symmetrically arranged on the mounting frame, a cross plate slidably arranged between the two guide rods, compression springs sleeved on the guide rods, the compression springs are located under the cross plate, a spiral blade is installed on the cross plate, and a rotating motor is installed on the top of the cross plate. This device realizes effective leveling of the soil before drilling. Through the coordinated actions of the swing frame, connecting rod, first sliding block, swing crank and other components, the leveling assembly is driven to contact and level the soil, ensuring the depth and consistency of the drilling operation. At the same time, the scraper rotates to break up and level the soil layer, and the excess soil is discharged, providing good soil conditions for subsequent drilling operations.

Description

Technical Field

[0001] The invention relates to the field of tea planting equipment, and in particular to an intelligent punching machine for tea planting. Background Art

[0002] In the process of tea planting, soil preparation and treatment are key links to ensure the healthy growth of tea trees and increase tea production. Traditional tea planting methods often rely on manual soil leveling and drilling, and the soil cannot be effectively leveled before drilling. This will cause problems such as uneven soil surface and large soil clods, which will affect the depth and consistency of drilling, and then affect the root growth and water and nutrient absorption of tea trees. In recent years, with the development of agricultural mechanization, various agricultural machinery and equipment have been widely used in tea planting to improve production efficiency and planting quality. Among them, tea planting drilling machines, as a special agricultural machinery and equipment, have received widespread attention and application. However, the existing tea planting drilling machines still have some deficiencies in function, especially in soil leveling before drilling.

[0003] In order to solve the above problems, it is necessary to design an intelligent punching machine for tea planting that can effectively level the soil on the front side before drilling, ensure the depth and consistency of the holes, and improve the root growth quality of the tea trees and the absorption efficiency of water and nutrients. Summary of the invention

[0004] In order to overcome some functional deficiencies of existing tea planting drilling machines, especially the shortcomings in soil leveling before drilling, the technical problem is: to provide an intelligent drilling machine for tea planting that can effectively level the soil on the front side before drilling.

[0005] The technical solution is: an intelligent punching machine for tea planting, including a body, a frame, a seat, a mounting frame, a guide rod, a cross plate, a compression spring, a driving assembly, a spiral blade, a rotating motor, an adjustable frame assembly, a leveling assembly and a swinging assembly. A frame is installed on the side wall of the body, a seat is arranged on the right side of the top of the body, a mounting frame is arranged on the middle side of the top of the body, guide rods are symmetrically arranged on the mounting frame, a cross plate is slidingly arranged between the two guide rods, compression springs are sleeved on the guide rods, and the compression springs are located below the cross plate, a spiral blade is installed on the cross plate, a rotating motor is installed on the top of the cross plate, and the output shaft of the rotating motor is connected to the top of the spiral blade, a driving assembly that can drive the cross plate to move up and down is arranged on the mounting frame, an adjustable frame assembly is arranged on the left side of the frame, a leveling assembly that can tidy up the land is arranged on the adjustable frame assembly, and swinging assemblies that drive the adjustable frame assembly to adjust up and down are arranged on the front and rear sides of the body.

[0006] Furthermore, the driving assembly includes a mounting plate, a first motor, a disc, a slotted plate and a sliding shaft. A mounting plate is arranged in the middle of the mounting frame, and the disc is rotatably arranged on the mounting plate through a rotating rod. The first motor is arranged on the mounting plate, and the output shaft of the first motor is connected to the rotating rod of the disc through a coupling. A slotted plate is arranged on the right side of the cross plate, and a sliding shaft is arranged at the eccentric position of the disc, and the sliding shaft and the slotted plate are slidably matched.

[0007] Furthermore, the adjustable frame assembly includes a first fixed seat, a mounting shaft, a swing crank, a second fixed seat, a guide rod, a first sliding block, a chain, a frame shell and a first elastic member. Two first fixed seats are arranged at the front and rear of the left side of the frame of the vehicle body, the first fixed seats are arranged at the mounting shaft, the swing crank is rotatably arranged on the mounting shaft, the second fixed seats are symmetrically arranged at the front and rear of the top of the frame, the second fixed seats are opened with sliding holes, the guide rod is slidably arranged up and down between the sliding holes of the two second fixed seats on the same side, the two guide rods are slidably arranged with two first sliding blocks, the two first sliding blocks on the same side are connected by a bracket, the first sliding block is rotatably connected to the upper part of the adjacent swing crank, the lower part of the swing crank is arranged with a chain, the frame shell is arranged between the lower ends of the four chains, and the first elastic member is arranged between the first sliding block and the adjacent second fixed seat.

[0008] Furthermore, the leveling assembly includes a rotating shaft, a pulley, a guide column, a flat belt, a scraper, a mounting shell and a second motor. Three rotating shafts are rotatably spaced apart on the frame shell. Pulleys are arranged on the tops of the rotating shafts. A guide column is rotatably arranged at the pulley position near the middle of the frame shell. A flat belt is wound around the pulley. A scraper is arranged at the bottom of the rotating shaft. Mounting shells capable of protecting the pulleys are arranged at the front and rear of the top of the frame shell. A second motor is arranged on the front mounting shell, and the output shaft of the second motor is connected to the rotating shaft on the front side.

[0009] Furthermore, the swing assembly includes a rotating shaft, a swing frame and a connecting rod. The body brackets on both sides of the seat are rotatably provided with rotating shafts, and the swing frames are provided on the rotating shafts. The lower part of the swing frame is rotatably provided with a connecting rod, and the connecting rod is rotatably connected to the top of the adjacent first sliding block.

[0010] Furthermore, a button for driving the second motor is arranged on one of the swing frames, and two buttons for operating the first motor and the rotating motor are arranged side by side on the other swing frame.

[0011] Furthermore, it also includes a stabilizing component. A stabilizing component capable of limiting the adjustable frame component is arranged at the bottom of the vehicle body. The stabilizing component includes a straight slide rail, a second sliding block, a fixed shaft and a connecting frame. Straight slide rails are symmetrically arranged at the bottom of the vehicle body front and back, and the straight slide rails are slidably arranged with the second sliding block, and the second sliding block is arranged with a fixed shaft. One end of the connecting frame is rotatably connected to the fixed shaft, and the other end of the connecting frame is rotatably connected to the right side wall of the frame shell.

[0012] Furthermore, it also includes a limit assembly, a limit assembly that can support the cross plate is arranged on the mounting frame, the limit assembly includes a straight slide rail, a sliding top block, a second elastic member, a fixed block and a connecting rope, a straight slide rail is symmetrically arranged in the middle of the mounting frame, a sliding top block is slidably arranged on the straight slide rail, a fixed block is arranged on the side of the two straight slide rails away from each other, a second elastic member is symmetrically arranged between the fixed block and the sliding top block, a connecting rope is connected to the sliding top block, and the connecting rope passes through the fixed block and is connected to a nearby connecting rod.

[0013] The beneficial effects of the present invention are:

[0014] 1. This device realizes effective leveling of the soil before drilling. Through the coordinated actions of the swing frame, connecting rod, first sliding block, swing crank and other components, the leveling component is driven to contact and level the soil to ensure the depth and consistency of the drilling operation. At the same time, the scraper rotates to break up and level the soil layer, and the excess soil is discharged, providing good soil conditions for subsequent drilling operations. This design improves the root growth quality of tea trees and the absorption efficiency of water and nutrients, thereby improving the overall yield and quality of the tea garden. In addition, the soft connection design in the device (such as the connection between the chain and the frame shell) can effectively buffer the clamping problem, prevent direct damage to the device, and improve the durability and stability of the equipment.

[0015] 2. The design of the adjustable frame assembly keeps the entire device stable during operation. The limiting function of the connecting frame, the second sliding block and the straight slide rail effectively prevents the frame assembly from shifting in the front and rear directions, ensuring the accuracy and consistency of the drilling operation. At the same time, the adjustability of the frame assembly enables the device to adapt to different terrain and soil conditions, improving the flexibility and adaptability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the driving assembly of the present invention.

[0018] Figure 3 It is a schematic diagram of the installation structure of the adjustable rack assembly of the present invention.

[0019] Figure 4 It is a partial three-dimensional structural schematic diagram of the adjustable frame assembly of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the leveling assembly of the present invention.

[0021] Figure 6 It is a schematic diagram of the installation structure of the swing assembly of the present invention.

[0022] Figure 7 It is a schematic diagram of the installation structure of the stabilizing assembly of the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the limiting component of the present invention.

[0024] Parts names and serial numbers in the figure: 1_car body, 2_frame, 3_seat, 4_mounting frame, 5_guide rod, 6_cross plate, 7_drive assembly, 71_mounting plate, 72_first motor, 73_disc, 74_slot plate, 75_sliding shaft, 8_screw blade, 9_rotating motor, 10_adjustable frame assembly, 101_first fixed seat, 102_mounting shaft, 103_swing crank, 104_second fixed seat, 105_guide rod, 106_first sliding block, 107_chain, 108_frame shell, 109_first elastic member, 11_whole Flat assembly, 111_rotating shaft, 112_pulley, 113_guide column, 114_flat belt, 115_scraper, 116_installation shell, 117_second motor, 12_swing assembly, 121_rotating shaft, 122_swing frame, 123_connecting rod, 13_stabilizing assembly, 131_straight slide rail, 132_second sliding block, 133_fixed shaft, 134_connecting frame, 14_limiting assembly, 141_straight slide rail, 142_sliding top block, 143_second elastic member, 144_fixed block, 145_connecting rope, 15_compression spring. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0026] Example: Figure 1-6As shown, an intelligent punching machine for tea planting includes a body 1, a frame 2, a seat 3, a mounting frame 4, a guide rod 5, a cross plate 6, a compression spring 15, a driving assembly 7, a spiral blade 8, a rotating motor 9, an adjustable frame assembly 10, a leveling assembly 11 and a swing assembly 12. The frame 2 is installed on the side wall of the body 1, a seat 3 is arranged on the right side of the top of the body 1, a mounting frame 4 is arranged on the middle side of the top of the body 1, the mounting frame 4 is N-shaped, guide rods 5 are symmetrically arranged on the mounting frame 4, a cross plate 6 is slidably arranged between the two guide rods 5, compression springs 15 are sleeved on the guide rods 5, and the compression spring 15 is located below the cross plate 6. The middle part of the cross plate 6 is connected to the round shaft at the top of the spiral blade 8 through a bearing, and a rotating motor 9 is installed on the top of the cross plate 6. The output shaft of 9 is connected to the circular shaft at the top of the spiral blade 8 through a coupling. A driving assembly 7 capable of driving the horizontal plate 6 to move up and down is provided on the mounting frame 4. The driving assembly 7 includes a mounting plate 71, a first motor 72, a disc 73, a slotted plate 74 and a sliding shaft 75. A mounting plate 71 is provided in the middle of the mounting frame 4. A disc 73 is rotatably provided on the mounting plate 71 through a rotating rod. A first motor 72 is provided on the mounting plate 71. The output shaft of the first motor 72 is connected to the rotating rod of the disc 73 through a coupling. A slotted plate 74 is provided on the right side of the horizontal plate 6. A sliding shaft 75 is provided at the eccentric position of the disc 73. The sliding shaft 75 and the slotted plate 74 are slidably matched. An adjustable frame assembly 10 is provided on the left side of the frame 2. The adjustable frame assembly 10 includes A first fixed seat 101, a mounting shaft 102, a swing crank 103, a second fixed seat 104, a guide rod 105, a first sliding block 106, a chain 107, a frame shell 108 and a first elastic member 109, two first fixed seats 101 are arranged at the front and rear of the left side of the frame of the vehicle body 1, the first fixed seats 101 are arranged with mounting shafts 102, the swing crank 103 is rotatably arranged on the mounting shaft 102, the second fixed seats 104 are symmetrically arranged at the front and rear of the top of the frame 2, the second fixed seats 104 are opened with sliding holes, the guide rod 105 is slidably arranged between the sliding holes of the two second fixed seats 104 on the same side, the two guide rods 105 are slidably arranged with two first sliding blocks 106, the two first The sliding blocks 106 are connected by brackets, the first sliding block 106 is rotatably connected to the upper part of the adjacent swing crank 103, the lower part of the swing crank 103 is provided with a chain 107, a frame shell 108 is provided between the lower ends of the four chains 107, a first elastic member 109 is provided between the first sliding block 106 and the adjacent second fixed seat 104, a leveling assembly 11 capable of tidying up the land is provided on the adjustable frame assembly 10, the leveling assembly 11 includes a rotating shaft 111, a pulley 112, a guide column 113, a flat belt 114, a scraper 115, a mounting shell 116 and a second motor 117, three rotating shafts 111 are rotatably spaced apart on the frame shell 108, and pulleys 112 are provided on the tops of the rotating shafts 111.A guide column 113 is rotatably provided near the pulley 112 in the middle of the frame shell 108, and a flat belt 114 is wound between the three pulleys 112. The guide column 113 cooperates with the pulley 112 in the middle to limit the flat belt 114. A scraper 115 is provided at the bottom of the rotating shaft 111, and there are rolled-up parts on both sides of the scraper 115. The top and rear of the frame shell 108 are provided with mounting shells 116 that can protect the pulley 112. A second motor 117 is provided on the front mounting shell 116, and the output shaft of the second motor 117 is connected to the rotating shaft 111 on the front side. The front and rear sides of the vehicle body 1 are provided with motors that drive the adjustable frame assembly 10 to adjust up and down. The swing assembly 12 includes a rotating shaft 121, a swing frame 122 and a connecting rod 123. The brackets on both sides of the vehicle body 1 seat 3 are rotatably provided with the rotating shaft 121, and the swing frame 122 is provided on the rotating shaft 121. The lower part of the swing frame 122 is rotatably provided with a connecting rod 123, and the connecting rod 123 is rotatably connected to the top of the adjacent first sliding block 106. A button for driving the second motor 117 is provided on one of the swing frames 122, and two buttons for operating the first motor 72 and the rotating motor 9 are arranged side by side on the other swing frame 122. The first motor 72, the second motor 117 and the rotating motor 9 are all connected to the button and the power supply through lines, and the power supply is an external power supply.

[0027] like Figure 1 and Figure 7 As shown, a stabilizing component 13 is also included. A stabilizing component 13 capable of limiting the adjustable frame component 10 is arranged at the bottom of the vehicle body 1. The stabilizing component 13 includes a straight slide rail 131, a second sliding block 132, a fixed shaft 133 and a connecting frame 134. Straight slide rails 131 are symmetrically arranged at the bottom of the vehicle body 1. Second sliding blocks 132 are slidably arranged on the straight slide rails 131. Fixed shafts 133 are arranged on the second sliding blocks 132. One end of the connecting frame 134 is rotatably connected to the fixed shaft 133, and the other end of the connecting frame 134 is rotatably connected to the right side wall of the frame shell 108.

[0028] like Figure 6 and Figure 8 As shown, it also includes a limit assembly 14. The mounting frame 4 is provided with a limit assembly 14 that can support the cross plate 6. The limit assembly 14 includes a straight slide rail 141, a sliding top block 142, a second elastic member 143, a fixed block 144 and a connecting rope 145. The straight slide rail 141 is symmetrically arranged in the middle part of the mounting frame 4. The sliding top block 142 is slidably arranged on the straight slide rail 141. The two straight slide rails 141 are provided with a fixed block 144 on the side away from each other. The second elastic member 143 is symmetrically arranged between the fixed block 144 and the sliding top block 142. The sliding top block 142 is connected with a connecting rope 145, and the connecting rope 145 passes through the fixed block 144 and is connected to the adjacent connecting rod 123.

[0029] When drilling is required, the user controls the vehicle body 1 to move to the tea garden planting area, and then pushes the swing frame 122 to the left. The lower part of the swing frame 122 swings to the right, and the connecting rod 123 with the belt moves to the right. The connecting rod 123 drives the first sliding block 106 to move to the right, and the first elastic member 109 is deformed accordingly. The first sliding block 106 drives the upper part of the swing crank 103 to swing to the right, and the swing crank 103 rotates around the mounting shaft 102, and then the lower end of the swing crank 103 drives the chain 107 and the frame shell 108 to swing to the lower left, and then the frame shell 108 drives the leveling component 11 to contact the ground. Since the chain 107 and the frame shell 108 are softly connected, a simple buffer can be achieved in case of clamping problems to prevent direct damage to the device. When the connecting rod 123 moves to the right, it drives the sliding top block 142 to move through the connecting rope 145, the second elastic member 143 is compressed, and the sliding top block 142 is separated from the bottom of the transverse plate 6, and no longer supports the transverse plate 6. The user presses the button on the swing frame 122 to drive the second motor 117, and the second motor 117 rotates to drive the pulley 112, and through the transmission of the flat belt 114, all the pulleys 112 drive the rotating shaft 111 and the scraper 115 to rotate, and the scraper 115 rotates to break up and level the upper part of the soil layer. Since a channel is opened on the rear side of the frame shell 108, the excess soil will be rolled up by the scraper 115 and pushed to the rear side for discharge, and then press the button on another swing frame 122 to drive the first motor 72 and the rotating motor 9, the first motor 72 drives the disc 73 to rotate, and the guide rod 105 of the disc 73 drives the slotted plate 74 to move downward when performing a circular motion. The slotted plate 74 is driven downward by the cross plate 6, and the compression spring 15 is reset. The rotating motor 9 drives the spiral blade 8 to rotate at a high speed to perform a punching operation, and the guide rod 105 of the disc 73 drives the slotted plate 74 to move upward When the first motor 72 and the rotating motor 9 are in the state of rotation, the first sliding block 106 is reset, and the first sliding block 106 drives the swing frame 122 to reset through the connecting rod 123. The first sliding block 106 is reset by the swing crank 103 to drive the frame shell 108 to reset, and then the entire adjustable frame assembly 10 drives the leveling assembly 11 to be lifted and not in contact with the ground. The second elastic member 143 is reset to drive the sliding top block 142 to be clamped on the bottom of the horizontal plate 6 again, and the user can control the vehicle body 1 to continue to move to the next side drilling position for operation. The device has a simple structure and can effectively level the soil on the front side before drilling, ensuring the depth and consistency of the drilling, and improving the root growth quality of the tea tree and the absorption efficiency of water and nutrients.

[0030] When the adjustable frame assembly 10 moves to the left, it will drive the connecting frame 134 to move. Since the frame shell 108 and the connecting frame 134, the connecting frame 134 and the second sliding block 132 are all rotatably connected, when the frame shell 108 moves down and contacts the ground, the connecting frame 134 drives the second sliding block 132 to slide along the straight slide rail 131. Under the limiting action of the connecting frame 134, the second sliding block 132 and the straight slide rail 131, the entire adjustable frame assembly 10 will not have a large deviation in the front and rear directions.

[0031] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. An intelligent punching machine for tea planting, characterized in that: The invention comprises a vehicle body (1), a frame (2) is installed on the side wall of the vehicle body (1), a seat (3) is arranged on the right side of the top of the vehicle body (1), a mounting frame (4) is arranged on the middle side of the top of the vehicle body (1), guide rods (5) are symmetrically arranged on the mounting frame (4) in the front and rear directions, a horizontal plate (6) is slidably arranged between two guide rods (5), compression springs (15) are sleeved on the guide rods (5), the compression springs (15) are located below the horizontal plate (6), a spiral blade (8) is installed on the horizontal plate (6), and the horizontal plate (6) A rotating motor (9) is installed on the top, and the output shaft of the rotating motor (9) is connected to the top of the spiral blade (8). The mounting frame (4) is provided with a driving component (7) capable of driving the horizontal plate (6) to move up and down. An adjustable frame component (10) is provided on the left side of the frame (2). A leveling component (11) capable of tidying up the land is provided on the adjustable frame component (10). The front and rear sides of the vehicle body (1) are both provided with swing components (12) capable of driving the adjustable frame component (10) to adjust up and down.

2. The intelligent punching machine for tea planting as claimed in claim 1, characterized in that: The driving assembly (7) comprises a mounting plate (71), the mounting plate (71) is arranged in the middle of the mounting frame (4), a disc (73) is rotatably arranged on the mounting plate (71) via a rotating rod, a first motor (72) is arranged on the mounting plate (71), an output shaft of the first motor (72) is connected to the rotating rod of the disc (73) via a coupling, a slotted plate (74) is arranged on the right side of the transverse plate (6), a sliding shaft (75) is arranged at an eccentric position of the disc (73), and the sliding shaft (75) is slidably matched with the slotted plate (74).

3. The intelligent punching machine for tea planting as claimed in claim 2, characterized in that: The adjustable frame assembly (10) comprises a first fixing seat (101), two first fixing seats (101) are arranged at the front and rear of the left side of the frame of the vehicle body (1), the first fixing seats (101) are arranged with a mounting shaft (102), a swing crank (103) is rotatably arranged on the mounting shaft (102), second fixing seats (104) are symmetrically arranged at the front and rear of the top of the frame (2), a sliding hole is opened on the second fixing seats (104), and a guide rod (104) is slidably arranged between the sliding holes of the two second fixing seats (104) on the same side. 5), two first sliding blocks (106) are slidably arranged on the two guide rods (105), the two first sliding blocks (106) on the same side are connected by a bracket, the first sliding block (106) is rotatably connected to the upper part of the adjacent swing crank (103), the lower part of the swing crank (103) is provided with a chain (107), a frame shell (108) is arranged between the lower ends of the four chains (107), and a first elastic member (109) is arranged between the first sliding block (106) and the adjacent second fixed seat (104).

4. The intelligent punching machine for tea planting as claimed in claim 3, characterized in that: The leveling assembly (11) comprises a rotating shaft (111), three rotating shafts (111) are rotatably arranged at intervals on the frame shell (108), a pulley (112) is arranged on the top of each rotating shaft (111), a guide column (113) is rotatably arranged near the pulley (112) in the middle of the frame shell (108), a flat belt (114) is wound around the pulley (112), a scraper (115) is arranged on the bottom of each rotating shaft (111), a mounting shell (116) capable of protecting the pulley (112) is arranged at the front and rear of the top of the frame shell (108), a second motor (117) is arranged on the front mounting shell (116), and an output shaft of the second motor (117) is connected to the rotating shaft (111) on the front side.

5. The intelligent punching machine for tea planting as claimed in claim 4, characterized in that: The swing assembly (12) includes a rotating shaft (121), and the rotating shaft (121) is rotatably arranged on the vehicle body (1) bracket on both sides of the seat (3), and a swing frame (122) is arranged on the rotating shaft (121). A connecting rod (123) is rotatably arranged at the lower part of the swing frame (122), and the connecting rod (123) is rotatably connected to the top of the adjacent first sliding block (106).

6. The intelligent punching machine for tea planting as claimed in claim 5, characterized in that: A button for driving the second motor (117) is arranged on one of the swing frames (122), and two buttons for respectively operating the first motor (72) and the rotating motor (9) are arranged side by side on the other swing frame (122).

7. The intelligent punching machine for tea planting as claimed in claim 6, characterized in that: The vehicle body (1) further comprises a stabilizing component (13), wherein the stabilizing component (13) capable of limiting the position of the adjustable frame component (10) is arranged at the bottom of the vehicle body (1), wherein the stabilizing component (13) comprises a straight slide rail (131), wherein the straight slide rail (131) is symmetrically arranged at the bottom of the vehicle body (1) in a front-to-back manner, wherein the second slide block (132) is slidably arranged on the straight slide rail (131), wherein the second slide block (132) is arranged on the second slide block (132), wherein one end of the connecting frame (134) is rotatably connected to the fixed shaft (133), and the other end of the connecting frame (134) is rotatably connected to the right side wall of the frame shell (108).

8. The intelligent punching machine for tea planting as claimed in claim 7, characterized in that: The invention also comprises a limit assembly (14), wherein the limit assembly (14) capable of supporting the transverse plate (6) is arranged on the mounting frame (4), and the limit assembly (14) comprises a straight slide rail (141), wherein the straight slide rail (141) is symmetrically arranged in the middle of the mounting frame (4) in the front and rear directions, and a sliding top block (142) is slidably arranged on the straight slide rail (141), and a fixed block (144) is arranged on the side away from each other of the two straight slide rails (141), and a second elastic member (143) is symmetrically arranged between the fixed block (144) and the sliding top block (142), and a connecting rope (145) is connected to the sliding top block (142), and the connecting rope (145) passes through the fixed block (144) and is connected to the adjacent connecting rod (123).

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