Forage grass seed precision sowing device

Abstract

The invention discloses a precision seeding device for forage grass seeds, and relates to the technical field of crop planting. The seeder comprises a seeder body, wherein a seeding mechanism and a precision mechanism are arranged in the seeder body; a turning and throwing roller and a pressing roller are rotationally mounted between the seeding machine bodies, through the arrangement of the seeding mechanism and the precision mechanism, the space between seeding barrels can be increased, competition between seeds is reduced, each seed can obtain more moisture and space, and the germination rate and the growth speed of the seeds are increased. It is guaranteed that more seeds can grow smoothly in the environment with limited moisture, the stability of the grassland can be improved, grassland degradation caused by insufficient moisture is reduced, under the wet condition, the density of the seeds is increased, dense grassland coverage can be formed, wind erosion and moisture evaporation are reduced, and therefore the overall quality of the grassland is improved. Meanwhile, accurate distribution of the seeds is achieved by automatically adjusting the rotating speed of the feeding disc.

Description

Technical Field

[0001] This invention relates to the field of crop planting equipment technology, specifically to a precision seeding device for forage grass seeds. Background Technology

[0002] Animal feed is the food upon which animals depend for survival, and its raw materials are mainly grains or cash crops, such as corn, soybeans, and alfalfa. However, with the development of the feed industry, the rigid demand for feed raw materials such as corn and soybeans has been increasing year by year, leading to a shortage of domestic feed resources and a high dependence on imports. To alleviate the tight situation of feed and its raw materials, it is urgent to develop new feed resources to replace corn, soybeans, and alfalfa, thereby easing the supply and demand imbalance in the feed market, such as barley. Currently, in the south, forage barley is mainly sown in autumn, grazed in autumn and winter, and harvested and stored as green grass, hay, or grains in the following spring; in the north, where it is a single-crop crop, it is mainly sown in spring and summer, and harvested and stored as green grass, hay, or grains in summer and autumn. Sowing equipment is required in the cultivation of forage barley.

[0003] The patent (application number: CN202410591123.0) discloses a uniform sowing device and method for forage barley, including a protective shell. A seed storage box is fixedly installed on the right end of the upper side wall of the protective shell. A feeding pipe is fixedly installed on the lower side wall of the seed storage box. A feeding pipe is fixedly installed at the lower end of the feeding pipe. A first machine box is fixedly installed on the right side wall of the feeding pipe. A first motor is fixedly installed inside the first machine box. A threaded conveying rod is horizontally arranged inside the feeding pipe. This application achieves uniform sowing by continuously shaking the screening tank. The feeding speed of the seeds is controlled by the conveying speed of the threaded conveying rod, which directly controls the seed sowing density. After the seeds are sown, the soil is turned over by the evenly arranged turning teeth, which effectively covers the seeds and prevents them from being exposed and lost.

[0004] The patent and existing technologies have the following technical problems in practical use:

[0005] Most existing seeders cannot adjust the seeding spacing during sowing, which may result in seeds being too densely packed in moist soil, causing water competition and preventing seeds from fully absorbing water. Conversely, in dry soil, the inability to adjust the seeding spacing may lead to seeds being too sparsely distributed, lacking sufficient water support and affecting seed germination and growth. Summary of the Invention

[0006] The purpose of this invention is to provide a precision seeding device for forage grasses to solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0008] A precision seeding device for forage grasses includes a seeder body, wherein the seeder body is provided with a seeding mechanism and a precision mechanism.

[0009] The seeder body is rotatably mounted with a turning roller and a pressing roller. The seeding mechanism includes a support frame fixedly mounted between the seeder bodies. The support frame is equipped with a seeding cylinder. Several sets of seeding cylinders are provided. A mounting base is fixedly mounted on one side of the seeding cylinder. A first linkage rod and a second linkage rod are rotatably mounted on one side of each mounting base. The first linkage rod and the second linkage rod in each set are rotatably connected in an alternating manner. The seeding cylinder can move horizontally.

[0010] The precision measuring mechanism includes a storage box located above a support frame, a feeding cylinder located below the storage box, a feeding plate rotatably mounted inside the feeding cylinder, a storage trough inside the feeding plate, a first flexible tube fixedly connecting the feeding cylinder and the seeding cylinder, an adjustment mechanism located above the support frame, the adjustment mechanism being able to control the rotation of the feeding plate, and the number of feeding cylinders and seeding cylinders being the same.

[0011] Furthermore, a support frame is fixedly installed on the top of the support frame, and the adjustment mechanism includes an adjustment rod rotatably installed between the inner walls of the support frame. The adjustment rod passes through the feeding disc and is fixedly connected to it. A connecting cylinder is fixedly installed on the surface of the adjustment rod. Two sets of connecting cylinders are symmetrically arranged. A first groove is opened on the surface of the connecting cylinder, and a pulley is slidably installed on the surface of the connecting cylinder through the first groove.

[0012] Furthermore, a mating cylinder is rotatably installed on the inner wall of the support frame near the feeding cylinder. The mating cylinder is tapered and two sets are symmetrically arranged. A second groove is opened on the surface of the mating cylinder. A mating ring is slidably installed on the surface of the mating cylinder through the second groove. A transmission belt is rotatably installed between the pulley and the mating ring. The transmission belt and the mating ring have a certain degree of toughness.

[0013] Furthermore, a connecting plate is rotatably mounted on one side of the outermost mounting base, and a sliding groove is provided on the top of the support frame. Two sets of sliding grooves are symmetrically arranged, and the mounting frame is slidably mounted on the support frame through the sliding groove.

[0014] Furthermore, one side of the mounting bracket is fixedly connected to the connecting plate, and a third linkage rod is fixedly installed on the side of the mounting bracket near the connecting cylinder. A docking rod is rotatably installed on one side of the mating ring, and the docking rod passes through and extends into the interior of the third linkage rod.

[0015] Furthermore, the storage box is fixedly connected to the support frame.

[0016] Furthermore, the support frame is provided with an irrigation mechanism, which includes a liquid storage tank fixedly installed on the top of the support frame, an irrigation cylinder fixedly installed on one side of the seeding cylinder, and a second hose fixedly connected between the liquid storage tank and the irrigation cylinder. The second hose is provided with a solenoid valve inside.

[0017] Furthermore, an electric telescopic rod is fixedly installed on one side of the inner wall of the support frame, and the output end of the electric telescopic rod is fixedly connected to the connecting plate.

[0018] Furthermore, a fixed pipe is fixedly connected between the storage box and the feeding cylinder, and a sliding rod is fixedly installed between the inner walls of the support frame. The sliding rod passes through the mounting base and is slidably connected to it.

[0019] Furthermore, a drive motor is fixedly installed on one side of the support frame, and the output end of the drive motor is fixedly connected to the shaft of the mating cylinder on one side. The electric telescopic rod is electrically connected to the drive motor and the solenoid valve.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention, through its specially designed sowing and precision mechanisms, increases the spacing between sowing cylinders, reducing competition among seeds and allowing each seed to receive more moisture and space, thus improving germination rate and growth speed. This ensures that more seeds can grow successfully in water-limited environments, improving grassland stability and reducing grassland degradation caused by insufficient water. Under humid conditions, increased seed density helps form denser grassland cover, reducing wind erosion and water evaporation, thereby improving the overall quality of the grassland. Simultaneously, precise seed distribution is achieved through automatic adjustment of the feeding disc's rotation speed. When the soil is moist, the seeder body accelerates the rotation of the feeding disc to precisely control the amount of seeds dispensed; while in dry environments, the rotation speed slows down, increasing the number of seeds per seed and their distribution range. This intelligent adjustment mechanism effectively adapts to different soil environments, ensuring optimal sowing results.

[0022] 2. By adjusting the spacing between the seeding cylinders, this invention enables seeds to spread their roots better in arid soils, adapt to water scarcity, reduce competition, and increase survival rates. In humid environments, smaller spacing helps to form denser grassland cover, effectively preventing soil exposure, reducing water evaporation and wind erosion, and enhancing the stability and durability of the grassland.

[0023] 3. In arid regions, the electric telescopic rod adjusts the spacing between the seeding cylinders to be larger, and the opening time of the solenoid valve is extended, ensuring that more water can be effectively transferred to the area around the seeds, which helps the seeds absorb more water and promotes their germination. In moist soil areas, the spacing between the seeding cylinders is smaller, and the opening time of the solenoid valve is shortened, thereby avoiding overwatering, reducing water waste, and preventing the seeds from being submerged by too much water, thus ensuring the best conditions for seed growth. Attached Figure Description

[0024] Figure 1 This is an overall schematic diagram of the invention;

[0025] Figure 2 This is a side view of the entire invention;

[0026] Figure 3 This is a schematic diagram of the overall bottom of the invention;

[0027] Figure 4 This is a schematic diagram of the interior of the support frame of the present invention;

[0028] Figure 5 This is a schematic diagram of the seeding mechanism of the present invention;

[0029] Figure 6 This is the present invention. Figure 5 Schematic diagram at point A in the middle;

[0030] Figure 7 This is a schematic diagram of the mating cylinder of the present invention;

[0031] Figure 8 This is the present invention. Figure 7 Schematic diagram at point B in the middle;

[0032] Figure 9 This is a schematic diagram of the precision mechanism of the present invention.

[0033] Reference numerals: 1. Seeder body; 2. Seeding mechanism; 201. Support frame; 202. Seeding cylinder; 203. Mounting base; 204. First linkage rod; 205. Second linkage rod; 3. Precision mechanism; 301. Storage box; 302. Feeding cylinder; 303. Feeding tray; 304. Storage trough; 305. First hose; 4. Turning roller; 5. Pressing roller; 6. Adjusting mechanism; 61. Adjusting rod; 62. Connecting cylinder; 63. First 64. Groove; 65. Pulley; 66. Mating cylinder; 67. Second groove; 68. Mating ring; 7. Transmission belt; 8. Support frame; 9. Connecting plate; 10. Slide groove; 11. Mounting bracket; 12. Third linkage rod; 13. Connecting rod; 14. Irrigation mechanism; 15. Liquid storage tank; 16. Irrigation cylinder; 17. Second hose; 18. Solenoid valve; 19. Electric telescopic rod; 10. Fixed pipe; 11. Drive motor; 12. Sliding rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] A preferred embodiment of the present invention, a precision seeding device for forage seeds, will be described in detail below.

[0036] Example 1, as Figures 1-9 As shown, it includes a seeder body 1, and the seeder body 1 is equipped with a seeding mechanism 2 and a precision mechanism 3 inside;

[0037] A turning roller 4 and a pressing roller 5 are rotatably installed between the main bodies 1 of the seeder. The seeding mechanism 2 includes a support frame 201 fixedly installed between the main bodies 1 of the seeder. A seeding cylinder 202 is provided inside the support frame 201. Several sets of seeding cylinders 202 are provided. A mounting base 203 is fixedly installed on one side of the seeding cylinder 202. A first linkage rod 204 and a second linkage rod 205 are rotatably installed on one side of the mounting base 203. The first linkage rod 204 and the second linkage rod 205 in each set are rotatably connected in an alternating manner. The seeding cylinder 202 can move horizontally.

[0038] The precision measuring mechanism 3 includes a storage box 301 disposed above the support frame 201, a feeding cylinder 302 disposed below the storage box 301, a feeding plate 303 rotatably mounted inside the feeding cylinder 302, a storage trough 304 opened inside the feeding plate 303, a first flexible hose 305 fixedly connected between the feeding cylinder 302 and the seeding cylinder 202, an adjusting mechanism 6 disposed above the support frame 201, the adjusting mechanism 6 can control the rotation of the feeding plate 303, and the number of feeding cylinders 302 and the number of seeding cylinders 202 are the same;

[0039] First, the staff added the forage seeds into the storage box 301, and then adjusted the distance between the seeding cylinders 202 according to the dryness and moisture of the soil.

[0040] When the soil is relatively dry, the operator controls the outermost seeding cylinder 202 to move outward. The first linkage rod 204 and the second linkage rod 205, which are rotatably mounted on the surface of the seeding cylinder 202, will move in an almost scissor-like motion due to their interconnection, thereby driving all the seeding cylinders 202 to move outward and increasing the distance between the seeding cylinders 202. When the distance between the seeding cylinders 202 increases, the adjusting mechanism 6 will slow down the rotation speed of the feeding plate 303. When the operator pushes the seeder body 1 to move, when the storage trough 304 of the feeding plate 303 rotates to align with the storage box 301, the forage seeds in the storage box 301 will fall into the storage trough 304. Because the rotation speed of the feeding plate 303 is slower, more seeds will fall into the storage trough 304. At the same time, because the distance between the seeding cylinders 202 is larger, the distance between the seeds falling into the pit will also increase, and more seeds will be added, ensuring that each seed can absorb enough water, thereby improving the survival rate and growth rate.

[0041] When the soil is relatively moist, the staff will reduce the spacing between the seeding cylinders 202. At this time, the feeding disc 303 will rotate faster. As the feeding disc 303 rotates faster, fewer seeds will fall into the storage trough 304, so that the seeds can be accurately sown according to the soil moisture.

[0042] By incorporating the seeding mechanism 2 and precision mechanism 3, the increased spacing between the seeding cylinders 202 reduces competition among seeds, allowing each seed to receive more moisture and space, thus improving germination rate and growth speed. This ensures that more seeds can grow successfully in water-limited environments, enhancing grassland stability and reducing grassland degradation caused by insufficient water. In humid conditions, increased seed density helps form denser grassland cover, reducing wind erosion and water evaporation, thereby improving the overall quality of the grassland. Simultaneously, precise seed distribution is achieved through automatic adjustment of the rotation speed of the feeding disc 303. When the soil is moist, the seeder body 1 accelerates the rotation of the feeding disc 303 to precisely control the seed dispensing amount; while in dry environments, the rotation speed slows down, increasing the number of seeds per seed and their distribution range. This intelligent adjustment mechanism effectively adapts to different soil environments, ensuring optimal seeding results.

[0043] Example 2, as Figures 1-9As shown, a support frame 7 is fixedly installed on the top of the support frame 201. The adjustment mechanism 6 includes an adjustment rod 61 rotatably installed between the inner walls of the support frame 7. The adjustment rod 61 passes through the feeding disc 303 and is fixedly connected to it. A connecting cylinder 62 is fixedly installed on the surface of the adjustment rod 61. Two sets of connecting cylinders 62 are symmetrically arranged. A first groove 63 is opened on the surface of the connecting cylinder 62. A pulley 64 is slidably installed on the surface of the connecting cylinder 62 through the first groove 63. A mating cylinder 65 is rotatably installed on the inner wall of the support frame 7 near the feeding cylinder 302. The mating cylinder 65 is tapered and two sets are symmetrically arranged. A second groove 66 is opened on the surface of the mating cylinder 65. A mating ring 67 is slidably installed on the surface of the mating cylinder 65 through the second groove 66. A transmission belt 68 is rotatably installed between the pulley 64 and the mating ring 67. The transmission belt 68 and the mating ring 67 have a certain degree of toughness.

[0044] When the spacing of the seeding cylinder 202 is adjusted, the mating ring 67 will slide on the surface of the mating cylinder 65. Since the mating ring 67 has a certain toughness and the mating cylinder 65 is conical, when the spacing of the seeding cylinder 202 is large, the mating ring 67 will slide to the conical part of the mating cylinder 65, and at the same time drive the pulley 64 to move synchronously through the first groove 63 on the surface of the connecting cylinder 62. At this time, the diameter of the mating ring 67 will become smaller. When the mating ring 67 drives the pulley 64 to rotate through the transmission belt 68, the rotation speed of the pulley 64 will slow down. As a result, the speed at which the pulley 64 drives the feeding disc 303 to rotate through the adjusting rod 61 will also slow down, thereby increasing the amount of forage seeds falling into the feeding trough.

[0045] When the spacing between the seeding cylinders 202 is small, the mating ring 67 will move to a position with a larger diameter on the surface of the mating cylinder 65. At this time, the diameter of the mating ring 67 will be larger than that of the pulley 64. As a result, when the mating ring 67 rotates and drives the pulley 64 to rotate, the pulley 64 drives the feeding disc 303 to rotate faster. This makes the forage seeds falling into the feeding trough smaller, and the spacing between seeds can be adjusted according to the soil moisture. At the same time, the number of seeds sown can be adjusted accordingly based on the spacing between seeds.

[0046] By adjusting the spacing between the seeding cylinders 202, in arid soils, a larger spacing can promote better root expansion of the seeds, adapt to water scarcity in the environment, reduce competition, and improve survival rate. In humid environments, a smaller spacing helps to form denser grassland cover, effectively avoid soil exposure, reduce water evaporation and wind erosion, and enhance the stability and durability of the grassland.

[0047] Example 3, as Figures 1-8As shown, a connecting plate 8 is rotatably mounted on one side of the outermost mounting base 203. A sliding groove 9 is provided on the top of the support frame 201. Two sets of sliding grooves 9 are symmetrically arranged. The support frame 201 is slidably mounted with a mounting frame 10 through the sliding groove 9. One side of the mounting frame 10 is fixedly connected to the connecting plate 8. A third linkage rod 11 is fixedly mounted on the side of the mounting frame 10 near the connecting cylinder 62. A docking rod 12 is rotatably mounted on one side of the mating ring 67. The docking rod 12 passes through and extends into the interior of the third linkage rod 11.

[0048] When the connecting plate 8 is moved outward by the seeding cylinder 202, the connecting plate 8 drives the third linkage rod 11 to move through the mounting frame 10 and the sliding groove 9, thereby driving the mating ring 67 to move through the docking rod 12. At the same time, the docking rod 12 can slide inside the third linkage rod 11.

[0049] Example 4, as Figures 1-5 As shown, the storage box 301 is fixedly connected to the support frame 7.

[0050] Example 5, such as Figures 1-6 As shown, the support frame 7 is equipped with an irrigation mechanism 13. The irrigation mechanism 13 includes a liquid storage tank 131 fixedly installed on the top of the support frame 201, an irrigation cylinder 132 fixedly installed on one side of the seeding cylinder 202, a second hose 133 fixedly connected between the liquid storage tank 131 and the irrigation cylinder 132, a solenoid valve 134 installed inside the second hose 133, and an electric telescopic rod 14 fixedly installed on one side of the inner wall of the support frame 201. The output end of the electric telescopic rod 14 is fixedly connected to the connecting plate 8.

[0051] The electric telescopic rod 14 can drive the connecting plate 8 to move, thereby adjusting the spacing between the seeding cylinders 202. Based on the distance between the seeding cylinders 202, the opening time of the solenoid valve 134 can be controlled. In dry soil areas, the opening time is longer, while in moist soil areas, the opening time is slightly shorter. The watering time of the irrigation cylinder 132 on the seeds can be controlled according to the actual needs of the soil.

[0052] In arid regions, the electric telescopic rod 14 adjusts the spacing between the seeding cylinders 202 to be larger, and the opening time of the solenoid valve 134 is extended to ensure that more water can be effectively transferred to the area around the seeds, which helps the seeds absorb more water and promotes their germination. In moist soil areas, the spacing between the seeding cylinders 202 is smaller, and the opening time of the solenoid valve 134 is shortened, thereby avoiding overwatering, reducing water waste, and preventing the seeds from being submerged by too much water, thus ensuring the best conditions for seed growth.

[0053] Example 6, as Figures 1-9As shown, a fixed pipe 15 is fixedly connected between the storage box 301 and the feeding cylinder 302. A sliding rod 17 is fixedly installed between the inner walls of the support frame 201. The sliding rod 17 passes through the mounting base 203 and is slidably connected to it. A drive motor 16 is fixedly installed on one side of the support frame 7. The output end of the drive motor 16 is fixedly connected to the axis of the mating cylinder 65 on one side. The electric telescopic rod 14 is electrically connected to the drive motor 16 and the solenoid valve 134.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precision seeding device for forage grasses, comprising a seeder body (1), characterized in that, The seeder body (1) is equipped with a seeding mechanism (2) and a precision mechanism (3). The seeder body (1) is rotatably mounted with a turning roller (4) and a pressing roller (5). The seeding mechanism (2) includes a support frame (201) fixedly mounted between the seeder bodies (1). The support frame (201) is provided with a seeding cylinder (202). The seeding cylinder (202) is provided with several sets. A mounting seat (203) is fixedly mounted on one side of the seeding cylinder (202). A first linkage rod (204) and a second linkage rod (205) are rotatably mounted on one side of the mounting seat (203). The first linkage rod (204) and the second linkage rod (205) in each set are alternately rotatably connected. The seeding cylinder (202) can move horizontally. The precision measuring mechanism (3) includes a storage box (301) set above the support frame (201), a feeding cylinder (302) set below the storage box (301), a feeding plate (303) rotatably installed inside the feeding cylinder (302), a storage trough (304) opened inside the feeding plate (303), a first flexible hose (305) fixedly connected between the feeding cylinder (302) and the seeding cylinder (202), an adjustment mechanism (6) set above the support frame (201), the adjustment mechanism (6) can control the rotation of the feeding plate (303), and the number of feeding cylinders (302) is the same as the number of seeding cylinders (202).

2. The precision seeding device for forage grasses according to claim 1, characterized in that, The support frame (7) is fixedly installed on the top of the support frame (201). The adjustment mechanism (6) includes an adjustment rod (61) rotatably installed between the inner walls of the support frame (7). The adjustment rod (61) passes through the feeding plate (303) and is fixedly connected to it. A connecting cylinder (62) is fixedly installed on the surface of the adjustment rod (61). Two sets of connecting cylinders (62) are symmetrically arranged. A first groove (63) is opened on the surface of the connecting cylinder (62). A pulley (64) is slidably installed on the surface of the connecting cylinder (62) through the first groove (63).

3. The precision seeding device for forage grasses according to claim 2, characterized in that, A fitting cylinder (65) is rotatably installed on the inner wall of the support frame (7) near the feeding cylinder (302). The fitting cylinder (65) is tapered and there are two sets symmetrically arranged. A second groove (66) is opened on the surface of the fitting cylinder (65). A fitting ring (67) is slidably installed on the surface of the fitting cylinder (65) through the second groove (66). A transmission belt (68) is rotatably installed between the pulley (64) and the fitting ring (67). The transmission belt (68) and the fitting ring (67) have a certain toughness.

4. The precision seeding device for forage grasses according to claim 1, characterized in that, A connecting plate (8) is rotatably mounted on one side of the outermost mounting base (203). A sliding groove (9) is provided on the top of the support frame (201). Two sets of sliding grooves (9) are symmetrically arranged. The support frame (201) is slidably mounted with a mounting frame (10) through the sliding groove (9).

5. A precision seeding device for forage grasses according to claim 4, characterized in that, One side of the mounting bracket (10) is fixedly connected to the connecting plate (8). A third linkage rod (11) is fixedly installed on the side of the mounting bracket (10) near the connecting cylinder (62). A docking rod (12) is rotatably installed on one side of the mating ring (67). The docking rod (12) passes through and extends into the interior of the third linkage rod (11).

6. The precision seeding device for forage grasses according to claim 1, characterized in that, The storage box (301) is fixedly connected to the support frame (7).

7. A precision seeding device for forage grasses according to claim 2, characterized in that, The support frame (7) is provided with an irrigation mechanism (13). The irrigation mechanism (13) includes a liquid storage tank (131) fixedly installed on the top of the support frame (201). An irrigation cylinder (132) is fixedly installed on one side of the seeding cylinder (202). A second hose (133) is fixedly connected between the liquid storage tank (131) and the irrigation cylinder (132). A solenoid valve (134) is provided inside the second hose (133).

8. The precision seeding device for forage grasses according to claim 1, characterized in that, An electric telescopic rod (14) is fixedly installed on one side of the inner wall of the support frame (201), and the output end of the electric telescopic rod (14) is fixedly connected to the connecting plate (8).

9. A precision seeding device for forage grasses according to claim 1, characterized in that, A fixed pipe (15) is fixedly connected between the storage box (301) and the feeding cylinder (302), and a sliding rod (17) is fixedly installed between the inner walls of the support frame (201). The sliding rod (17) passes through the mounting base (203) and is slidably connected to it.

10. A precision seeding device for forage grasses according to claim 2, characterized in that, A drive motor (16) is fixedly installed on one side of the support frame (7). The output end of the drive motor (16) is fixedly connected to the axis of the mating cylinder (65) on one side. The electric telescopic rod (14) is electrically connected to the drive motor (16) and the solenoid valve (134).

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