A hairy vetch and rapeseed interplanting seeder

Abstract

The present invention relates to the technical field of seed drills, and in particular to a hairy vetch and rapeseed interplanting seed drill, comprising a seeding seat, one end of which is fixedly connected to a mounting frame, a seeding seat upper end of which is movably connected to a seed conversion mechanism, the seed conversion mechanism is used to store two kinds of seeds and drive the two kinds of seeds to switch positions, the lower end of the seed conversion mechanism is connected to two first material guide cavities, and both sides of the seeding seat are fixedly connected to support columns; the rotation of a spiral feed rod drives the squeezing mechanism to rotate, and the rotation of the squeezing mechanism drives the blocking mechanism to move along the sliding cavity, so that the seeds transported by the spiral feed rod can pass through the second material guide cavity and be discharged into the telescopic tube, and finally the seeds are planted into the soil through the adjustable seeding mechanism, and when the direction is changed for sowing, the seed conversion mechanism will swap the positions of the hairy vetch and rapeseed seeds, so as to solve the problem that the seeds to be sown are the same as the similar seeds that have been sown.

Description

Technical Field

[0001] The invention relates to the technical field of seeders, in particular to a hairy vetch and rapeseed interplanting seeder. Background Art

[0002] Intercropping of hairy vetch and rapeseed is a method of agricultural production. By alternating the planting of these two crops, the land use efficiency can be effectively improved, soil fertility can be maintained, and many economic and ecological benefits can be brought about. Due to the different root characteristics of hairy vetch and rapeseed, the soil structure can be improved complementarily. The deep root system of rapeseed can loosen the soil and facilitate the penetration of water and nutrients, while hairy vetch can help increase the permeability of the soil surface through its shallow root system. In addition, the root secretions of hairy vetch and rapeseed help improve the soil's microbial environment and increase the soil's organic matter content.

[0003] For example, the Chinese patent with the announcement number CN2731942Y discloses a telescopic seeder, in which a plurality of seeding devices are connected to the bottom of a seed box supported by a frame, a row of seeding shafts passes through each seeding device, and the lower part of each seeding device is connected in sequence with a funnel, a seed delivery pipe and a furrow seeder, the rear hoe of the furrow seeder is fixed on the frame, the seeding shaft is driven by the ground wheel on the frame through a transmission chain, a sub-seed box supported by the frame is provided on the rear side of the seed box, a seeding device is connected to the seeding port at the bottom of the sub-seed box, a row of seeding shafts passes through the seeding device, and the lower part of the seeding device is connected with a funnel and a seed delivery hose in sequence, and the second furrow seeder counting from one end of the frame is fixed with a seeding pipe communicated with the interior thereof.

[0004] However, the above scheme has the following shortcomings: in the interplanting work of hairy vetch and rapeseed, the main seeder sows the hairy vetch crop while the attached sowing mechanism can also sow another rapeseed crop to achieve interplanting of crops in the field. However, during the use of the above patent, since the seeder sows back and forth, when the seeder sows once and turns around to sow again, the seeds sown at the edge of the equipment are the same as the similar seeds that have been sown, and regular interplanting cannot be achieved. This results in the inability to effectively improve the land use efficiency and promote the beneficial effects of soil fertility maintenance after the hairy vetch and rapeseed are planted. For this reason, we have launched a new hairy vetch and rapeseed interplanting seeder. Summary of the invention

[0005] The object of the present invention is to provide a hairy vetch and rapeseed interplanting seeder to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A hairy vetch rape interplanting seeder comprises a sowing seat, one end of which is fixedly connected to a mounting frame, a seed conversion mechanism movably connected in the upper end of the sowing seat, the seed conversion mechanism is used to store two kinds of seeds and drive the two kinds of seeds to switch positions, the lower end of the seed conversion mechanism is connected to two first material guide cavities, both sides of the sowing seat are fixedly connected to support columns, the first material guide cavity extends into the support column, a spiral feed rod is movably connected in the first material guide cavity, the opposite ends of the two spiral feed rods are fixedly connected to the output ends of a dual-axis motor, the dual-axis motor is fixedly installed in the sowing seat, and the spiral feed rod extends out of the support column at one end away from the sowing seat and is connected to a squeezing mechanism;

[0008] A second material guide cavity is provided in the lower end of the support column, the second material guide cavity is communicated with the sliding cavity, the sliding cavity is provided in the support column, one end of the sliding cavity extends to the external environment, a blocking mechanism is slidably provided in the sliding cavity, one end of the blocking mechanism extends into the external environment and contacts with the extrusion mechanism, a telescopic tube is fixedly connected to the lower end of the second material guide cavity, the extrusion mechanism is driven to rotate by the rotation of the spiral feed rod, and the blocking mechanism is driven to move along the sliding cavity by the rotation of the extrusion mechanism, so that the seeds transported by the spiral feed rod can pass through the second material guide cavity and be discharged into the telescopic tube;

[0009] An adjustable sowing mechanism is respectively provided on the lower side of the two support columns, and the adjustable sowing mechanism is arranged in the sowing seat. The lower end of the telescopic tube is connected to the upper end of the adjustable sowing mechanism. After adjusting the distance between the two adjustable sowing mechanisms, the adjustable sowing mechanism is driven by the sowing seat to sow the seeds entering the telescopic tube into the soil. A control mechanism is provided at the lower end of the sowing seat.

[0010] Preferably, the seed conversion mechanism includes a connecting column, two through grooves are formed in the upper end of the connecting column, the connecting column is movably connected to the upper end of the sowing seat, the lower end of the connecting column is fixedly connected to the output end of the conversion motor, and the conversion motor is fixedly installed in the sowing seat.

[0011] Preferably, the extrusion mechanism comprises a cylinder, a plurality of internal threaded holes are formed in the outer side of the cylinder, and a lever is threadedly connected in the internal threaded hole.

[0012] Preferably, the blocking mechanism includes a blocking plate, which is slidably connected in the sliding cavity, a discharge through hole is opened on the upper end of the blocking plate, one end of the blocking plate extends out of the sliding cavity and is fixedly connected to the tilting block, and the tilting block is in contact with the shifting rod.

[0013] Preferably, a slider is fixedly connected to the upper end of the blocking plate, the slider is slidably connected in the sliding cavity, one side of the slider is fixedly connected to a support spring, and one end of the support spring away from the slider is fixedly connected to the sliding cavity.

[0014] Preferably, the adjustable sowing mechanism includes a T-shaped plate, one end of the T-shaped plate is slidably connected to a connecting cavity, the connecting cavity is opened in the sowing seat, a connecting spring is fixedly connected in the connecting cavity, the other end of the connecting spring is fixedly connected to the T-shaped plate, the lower end of the T-shaped plate is fixedly connected to a furrowing plate, one end of the furrowing plate is provided with a seed discharge tube, the upper end of the seed discharge tube passes through the T-shaped plate and is fixedly connected to the lower end of the telescopic tube, a burying plate is provided on the side of the seed discharge tube away from the furrow plate, and telescopic cylinders are fixedly connected on both sides of the sowing seat, the output end of the telescopic cylinder extends into the connecting cavity and is fixedly connected to the T-shaped plate.

[0015] Preferably, the control mechanism includes a T-shaped connecting rod, the upper end of the T-shaped connecting rod is movably connected to the guide cavity, the guide cavity is opened in the lower end of the sowing seat, the lower end of the guide cavity is movably connected to a roller, a return spring is fixedly connected in the guide cavity, the other end of the return spring is fixedly connected to the T-shaped connecting rod, a press switch is provided on the inner side of the return spring, and the press switch is fixedly connected to the guide cavity.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention stores hairy vetch and rapeseed seeds through a seed conversion mechanism, conveys the seeds through a rotating spiral feed rod, the rotation of the spiral feed rod drives the extrusion mechanism to rotate, and the rotation of the extrusion mechanism drives the blocking mechanism to move along the sliding cavity, so that the seeds conveyed by the spiral feed rod can pass through the second guide cavity and be discharged into the telescopic tube, and finally the seeds are planted into the soil through the adjustable sowing mechanism, thereby realizing the interplanting of hairy vetch and rapeseed seeds. When the direction is changed for sowing, the seed conversion mechanism will swap the positions of the hairy vetch and rapeseed seeds, thereby solving the problem that the seeds to be sown are the same as the similar seeds that have been sown. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 The enlarged cross-sectional structure diagram at A in the middle;

[0019] Figure 3 This is a cross-sectional structural schematic diagram of the connection relationship between the spiral feed rod and the cylinder of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 5 For the present invention Figure 4 The enlarged cross-sectional structure diagram at B in the middle;

[0022] Figure 6It is a three-dimensional structural schematic diagram of the connection relationship between the blocking plate and the tilting block of the present invention;

[0023] Figure 7 This is a three-dimensional structural schematic diagram of the connection relationship between the spiral feed rod and the cylinder of the present invention;

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the connection relationship between the buried plate and the T-shaped plate of the present invention.

[0025] In the figure: 1. sowing seat; 2. connecting column; 3. through groove; 4. conversion motor; 5. supporting column; 6. first material guiding cavity; 7. double-axis motor; 8. spiral feeding rod; 9. lever; 10. cylinder; 11. telescopic tube; 12. T-plate; 13. trenching plate; 14. burying plate; 15. second material guiding cavity; 16. connecting cavity; 17. T-type connecting rod; 18. roller; 19. connecting spring; 20. telescopic cylinder; 21. guide cavity; 22. reset spring; 23. push switch; 24. internal threaded hole; 25. blocking plate; 26. discharge hole; 27. slider; 28. supporting spring; 29. ​​sliding cavity; 30. mounting frame; 31. seed discharging tube; 32. tilting block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-8 , the present invention provides a technical solution:

[0028] Embodiment 1:

[0029] A hairy vetch and rapeseed interplanting seeder comprises a sowing seat 1, one end of which is fixedly connected to a mounting frame 30, and the sowing seat 1 can be connected to an agricultural machine through the mounting frame 30. In actual use, an agricultural machine with a hydraulic system should be selected so that the agricultural machine can drive the sowing seat 1 to rise or fall during the sowing process. A seed conversion mechanism is movably connected to the upper end of the sowing seat 1, and the seed conversion mechanism is used to store hairy vetch and rapeseed seeds and drive the two kinds of seeds to switch positions. The lower end of the seed conversion mechanism is connected to two first material guide chambers 6. Support columns 5 are fixedly connected to both sides of the sowing seat 1, and the first material guide chamber 6 extends into the support columns 5. A spiral feed rod 8 is movably connected in the first material guide chamber 6, and the opposite ends of the two spiral feed rods 8 are fixedly connected to the output ends of a double-axis motor 7. After the double-axis motor 7 is started, the spiral feed rod 8 is driven to rotate, and the seeds are transported by the rotating spiral feed rod 8.

[0030] The dual-axis motor 7 is fixedly installed in the sowing seat 1, and the spiral feed rod 8 extends out of the support column 5 at one end away from the sowing seat 1 and is connected to the extrusion mechanism. A second material guide cavity 15 is provided in the lower end of the support column 5, and the second material guide cavity 15 is communicated with the sliding cavity 29. The sliding cavity 29 is provided in the support column 5, and one end of the sliding cavity 29 extends to the external environment. A blocking mechanism is slidably connected in the sliding cavity 29, and one end of the blocking mechanism extends into the external environment and contacts the extrusion mechanism. A telescopic tube 11 is fixedly connected to the lower end of the second material guide cavity 15, and the extrusion mechanism is driven to rotate by the rotation of the spiral feed rod 8, and the rotation of the extrusion mechanism drives the blocking mechanism to move along the sliding cavity 29, so that the seeds transported by the spiral feed rod 8 can pass through the second material guide cavity 15 and be discharged into the telescopic tube 11;

[0031] Adjustable sowing mechanisms are respectively provided on the lower sides of the two support columns 5, and the adjustable sowing mechanisms are arranged in the sowing seat 1. The lower end of the telescopic tube 11 is connected to the upper end of the adjustable sowing mechanism. After adjusting the distance between the two adjustable sowing mechanisms, the adjustable sowing mechanism is driven by the sowing seat 1 to sow the seeds entering the telescopic tube 11 into the soil. A control mechanism is provided at the lower end of the sowing seat 1.

[0032] Embodiment 2:

[0033] On the basis of Example 1, in order to avoid the situation that the seeds sown at the edge of the equipment are the same as the adjacent seeds that have been sown when the seeder sows once and turns around to sow again, the seed conversion mechanism includes a connecting column 2, and two through grooves 3 are provided in the upper end of the connecting column 2. The two through grooves 3 are used to store hairy vetch and rapeseed seeds respectively. The connecting column 2 is movably connected to the upper end of the sowing seat 1, and the lower end of the connecting column 2 is fixedly connected to the output end of the conversion motor 4. The conversion motor 4 is fixedly installed in the sowing seat 1. The conversion motor 4 is started and drives the connecting column 2 to rotate, so that the two through grooves 3 with hairy vetch and rapeseed seeds are exchanged. After the exchange is completed, the conversion motor 4 stops working, and the sowing seat 1 is moved downward again, so that the seeds that have been sown and the adjacent seeds to be sown will not be consistent;

[0034] The extrusion mechanism includes a cylinder 10, a plurality of internal threaded holes 24 are formed inside the outer side of the cylinder 10, a lever 9 is threadedly connected inside the internal threaded hole 24, and the moving frequency of the blocking plate 25 is controlled by adjusting the number of the levers 9, so that the agricultural machine can achieve the effect of controlling the sowing distance between the same seeds at a stable speed, and the blocking mechanism includes a blocking plate 25, the blocking plate 25 is slidably connected in the sliding cavity 29, a discharge through hole 26 is formed at the upper end of the blocking plate 25, one end of the blocking plate 25 extends out of the sliding cavity 29 and is fixedly connected to the tilting block 32, and the tilting block 32 is in contact with the lever 9;

[0035] A slider 27 is fixedly connected to the upper end of the blocking plate 25, and the slider 27 is slidably connected in the sliding cavity 29. One side of the slider 27 is fixedly connected to a support spring 28, and the end of the support spring 28 away from the slider 27 is fixedly connected to the sliding cavity 29. During the rotation of the spiral feed rod 8, the cylinder 10 is driven to rotate, and the rotation of the cylinder 10 drives a number of levers 9 connected to the outer side thereof to rotate. When the lever 9 contacts the tilting block 32, the lever 9 squeezes the tilting block 32, and the tilting block 32 drives the blocking plate 25 to move inward after squeezing. When the discharge through hole 26 at the upper end of the blocking plate 25 is aligned with the second material guiding cavity 15, the hairy vetch and rapeseed seeds entering the second material guiding cavity 15 will enter the corresponding telescopic tube 11;

[0036] The adjustable sowing mechanism includes a T-shaped plate 12, one end of the T-shaped plate 12 is slidably connected to a connecting cavity 16, the connecting cavity 16 is opened in the sowing seat 1, a connecting spring 19 is fixedly connected in the connecting cavity 16, the other end of the connecting spring 19 is fixedly connected to the T-shaped plate 12, the lower end of the T-shaped plate 12 is fixedly connected to a furrowing plate 13, one end of the furrowing plate 13 is provided with a seed discharge tube 31, the upper end of the seed discharge tube 31 passes through the T-shaped plate 12, and is fixedly connected to the lower end of the telescopic tube 11, and the seed discharge tube 31 is far from the furrowing plate 13. A burying plate 14 is provided on the side of the seed discharge tube 31, and a cavity in the shape of an isosceles trapezoid is provided in the lower end of the burying plate 14, through which the soil lifted by the furrowing plate 13 is collected and pushed, and finally buried again in the furrow opened by the furrowing plate 13;

[0037] Both sides of the sowing seat 1 are fixedly connected with a telescopic cylinder 20, the output end of the telescopic cylinder 20 extends into the connecting cavity 16 and is fixedly connected to the T-shaped plate 12. By opening the telescopic cylinder 20, the T-shaped plate 12 connected to the output end is driven to move, and the movement of the T-shaped plate 12 drives the furrowing plate 13 and the burying plate 14 to move. By adjusting the spacing between the two furrowing plates 13, the row spacing after sowing is controlled. When the sowing is completed, the telescopic cylinder 20 is closed. At this time, under the elastic force of the connecting spring 19, the T-shaped plate 12 will drive the furrowing plate 13 back to the initial position;

[0038] The control mechanism includes a T-shaped connecting rod 17, the upper end of the T-shaped connecting rod 17 is movably connected to the guide cavity 21, the guide cavity 21 is opened in the lower end of the sowing seat 1, the lower end of the guide cavity 21 is movably connected to the roller 18, the guide cavity 21 is fixedly connected to a return spring 22, the other end of the return spring 22 is fixedly connected to the T-shaped connecting rod 17, a press switch 23 is provided on the inner side of the return spring 22, and the press switch 23 is fixedly connected to the guide cavity 21.

[0039] Working principle: when in use, it is connected to the agricultural machine through the mounting frame 30, and the sowing seat 1 can be driven to move up and down through the hydraulic system of the agricultural machine, and the hairy vetch and rapeseed seeds are stored in the through groove 3 respectively. The seeds entering the through groove 3 will enter the first material guide cavity 6, and the T-shaped plate 12 connected to its output end is driven to move by opening the telescopic cylinder 20, and the movement of the T-shaped plate 12 drives the ditching plate 13 and the burying plate 14 to move. By adjusting the spacing between the two ditching plates 13, the row spacing after sowing is controlled. When sowing is required, the sowing seat 1 is driven downward by the agricultural machine, and the movement of the sowing seat 1 drives the ditching plate 13 to enter the soil. At the same time, in the process of the sowing seat 1 moving downward, after the roller 18 contacts the ground, it will drive the T-shaped connecting rod 17 to move upward along the guide cavity 21, and at the same time, the press switch 23 is pressed;

[0040] The dual-axis motor 7 is turned on to drive the spiral feed rod 8 connected to its output end to start rotating. During the rotation process, the two spiral feed rods 8 respectively transport the hairy vetch and rapeseed seeds entering the first guide cavity 6 to the corresponding second guide cavity 15. At the same time, during the rotation process of the spiral feed rod 8, the cylinder 10 is driven to rotate. The rotation of the cylinder 10 drives several levers 9 connected to its outer side to rotate. When the lever 9 contacts the tilting block 32, as the cylinder 10 continues to rotate, the lever 9 squeezes the tilting block 32. After the tilting block 32 is squeezed, it drives the blocking plate 25 to move inward along the sliding cavity 29. At this time, the slider 27 compresses the supporting spring 28. When the discharge through hole 26 located at the upper end of the blocking plate 25 is aligned with the second guide cavity 15, the hairy vetch and rapeseed seeds entering the second guide cavity 15 will enter the corresponding telescopic tube 11.

[0041] The hairy vetch and rapeseed seeds entering the telescopic tube 11 will enter the corresponding seed row tube 31, and finally the hairy vetch and rapeseed seeds will enter the corresponding grooves and be buried by the burying plate 14. When the agricultural machine drives the sowing seat 1 to change direction for sowing, the sowing seat 1 will be lifted up at this time, and under the elastic force of the reset spring 22, the T-shaped connecting rod 17 will drive the roller 18 to return to its original position, and the T-shaped connecting rod 17 cancels the pressing of the press switch 23. At this time, the dual-axis motor 7 is turned off, and under the elastic force of the supporting spring 28, the blocking plate 25 blocks the second material guide cavity 15 again. At the same time, the conversion motor 4 starts to drive the connecting column 2 to rotate, so that the two through grooves 3 with hairy vetch and rapeseed seeds are placed are exchanged. After the exchange is completed, the conversion motor 4 stops working, and the sowing seat 1 is moved downward again, so that the seeds that have been sown will not be consistent with the adjacent seeds to be sown.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hairy vetch rape interplanting seeder, comprising a sowing seat, one end of which is fixedly connected to a mounting frame, characterized in that: A seed conversion mechanism is movably connected in the upper end of the sowing seat, and the seed conversion mechanism is used to store two kinds of seeds and drive the two kinds of seeds to switch positions. The lower end of the seed conversion mechanism is connected to two first material guide cavities. Support columns are fixedly connected to both sides of the sowing seat. The first material guide cavity extends into the support column. A spiral feed rod is movably connected in the first material guide cavity. The opposite ends of the two spiral feed rods are fixedly connected to the output ends of the dual-axis motor. The dual-axis motor is fixedly installed in the sowing seat. The spiral feed rod extends out of the support column at one end away from the sowing seat and is connected to the extrusion mechanism. A second material guide cavity is provided in the lower end of the support column, the second material guide cavity is communicated with the sliding cavity, the sliding cavity is provided in the support column, one end of the sliding cavity extends to the external environment, a blocking mechanism is slidably provided in the sliding cavity, one end of the blocking mechanism extends into the external environment and contacts with the extrusion mechanism, a telescopic tube is fixedly connected to the lower end of the second material guide cavity, the extrusion mechanism is driven to rotate by the rotation of the spiral feed rod, and the blocking mechanism is driven to move along the sliding cavity by the rotation of the extrusion mechanism, so that the seeds transported by the spiral feed rod can pass through the second material guide cavity and be discharged into the telescopic tube; The lower sides of the two support columns are respectively provided with adjustable sowing mechanisms, the adjustable sowing mechanisms are arranged in the sowing seat, the lower end of the telescopic tube is connected to the upper end of the adjustable sowing mechanism, and after adjusting the spacing between the two adjustable sowing mechanisms, the adjustable sowing mechanism is driven by the sowing seat to sow the seeds entering the telescopic tube into the soil, and the lower end of the sowing seat is provided with a control mechanism; The extrusion mechanism comprises a cylinder, a plurality of internal thread holes are formed in the outer side of the cylinder, and a lever is threadedly connected in the internal thread holes; The blocking mechanism comprises a blocking plate, the blocking plate is slidably connected in the sliding cavity, a discharge through hole is provided at the upper end of the blocking plate, one end of the blocking plate extends out of the sliding cavity and is fixedly connected to the tilting block, and the tilting block is in contact with the shifting rod; The upper end of the blocking plate is fixedly connected with a slider, the slider is slidably connected in the sliding cavity, one side of the slider is fixedly connected to a support spring, and one end of the support spring away from the slider is fixedly connected to the sliding cavity.

2. The hairy vetch rape interplanting seeder according to claim 1, characterized in that: The seed conversion mechanism includes a connecting column, two through slots are provided in the upper end of the connecting column, the connecting column is movably connected to the upper end of the sowing seat, the lower end of the connecting column is fixedly connected to the output end of the conversion motor, and the conversion motor is fixedly installed in the sowing seat.

3. The hairy vetch rape interplanting seeder according to claim 1, characterized in that: The adjustable sowing mechanism includes a T-shaped plate, one end of which is slidably connected to a connecting cavity, the connecting cavity is opened in a sowing seat, a connecting spring is fixedly connected in the connecting cavity, the other end of the connecting spring is fixedly connected to the T-shaped plate, the lower end of the T-shaped plate is fixedly connected to a furrowing plate, one end of the furrowing plate is provided with a seed discharge tube, the upper end of the seed discharge tube passes through the T-shaped plate and is fixedly connected to the lower end of the telescopic tube, a burying plate is provided on the side of the seed discharge tube away from the furrow plate, and telescopic cylinders are fixedly connected on both sides of the sowing seat, the output end of the telescopic cylinder extends into the connecting cavity and is fixedly connected to the T-shaped plate.

4. The hairy vetch rape interplanting seeder according to claim 1, characterized in that: The control mechanism includes a T-shaped connecting rod, the upper end of the T-shaped connecting rod is movably connected to the guide cavity, the guide cavity is opened in the lower end of the sowing seat, the lower end of the guide cavity is movably connected to a roller, a return spring is fixedly connected in the guide cavity, the other end of the return spring is fixedly connected to the T-shaped connecting rod, a press switch is provided on the inner side of the return spring, and the press switch is fixedly connected to the guide cavity.

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