A seed sample pulverizer

Abstract

The utility model discloses a seed sample rubbing crusher relates to seed detection technical field. The utility model discloses a rubbing box is provided with the blanking assembly at the bottom of rubbing box, and the blanking assembly includes the blanking cover fixedly connected in the bottom of rubbing box, and the blanking cover below is fixedly connected with the blanking box, and the inside rotation of blanking box is connected with the rotating shaft, and the outer wall on rotating shaft is fixedly connected with the baffle, and the end of baffle away from rotating shaft is attached on the inside wall of blanking box, and the inside of rubbing box still is provided with cleaning assembly. The utility model drives the baffle to rotate through the rotating shaft, and the seed sample after rubbing is dosed through the baffle, and the problem that the seed sample after rubbing is not convenient for dosed in the prior art is solved, and the rubbing roller is cleaned through the fixed cleaning pipe, and the screen is cleaned through the rotating cleaning pipe, and the problem that the rubbing structure and screening structure are not convenient for cleaning in the prior art is solved.

Description

Technical Field

[0001] This utility model belongs to the field of seed testing technology, and in particular relates to a seed sample crusher. Background Technology

[0002] Seed testing is the process of scientifically assessing the quality, vigor, and health status of seeds to ensure their sowing value, genetic purity, and crop production potential. A large number of devices are used in the seed testing process, among which a crusher is one of the most common devices. It is mainly used to crush seed samples to facilitate subsequent seed sample testing. A seed testing sample crusher is disclosed in the existing patent announcement document CN222364821U, comprising: a rectangular shell with an opening on one side, a pair of crushing rollers inside for crushing seeds, a sieve disc below the crushing rollers, one side of the sieve disc being rotatably connected to the inner wall of the rectangular shell via a first connecting rod, and the axial direction of the first connecting rod being the same as the axial direction of the crushing rollers; a pair of cams sleeved on a second connecting rod, one end of the second connecting rod being rotatably connected to one end of the rectangular shell, and the other end of the second connecting rod passing through the other end of the rectangular shell and connected to the output shaft of a motor, the motor being mounted on the rectangular shell; when the protruding end of the cam rotates to face the sieve disc, the sieve disc tilts upwards; when the protruding end of the cam rotates to face the other side of the rectangular shell, the sieve disc tilts downwards; and a first receiving disc spaced below the cams. However, it still has the following drawbacks in practical use: 1. The sample crusher mentioned above stores the crushed seed samples through the first receiving tray. However, during use, the first receiving tray is not convenient for quantitative dispensing of seed samples, which requires personnel or other equipment to quantitatively dispense the crushed seed samples, resulting in poor functionality. 2. The sample crusher mentioned above crushes the seed samples using a crushing roller and sieves them using a sieve plate. However, during use, some seed samples contain moisture, which causes some waste or liquid to adhere to the crushing roller and sieve plate during crushing. This can contaminate subsequent crushing operations and make it difficult to clean the crushing roller and sieve plate.

[0003] To address these issues, we provide a seed sample crusher. Utility Model Content

[0004] The purpose of this invention is to provide a seed sample crusher, which drives the partition to rotate through a rotating shaft and quantitatively feeds the crushed seed sample through the partition, solving the problem of inconvenience in quantitatively dispensing the crushed seed sample. At the same time, the crushing roller is cleaned by a fixed cleaning tube and the screen is cleaned by a rotating cleaning tube, solving the problem of inconvenience in cleaning the crushing and screening structures.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a seed sample crusher, comprising a crushing chamber, a feeding assembly at the bottom of the crushing chamber, a feeding cover fixedly connected to the bottom of the crushing chamber, a feeding box fixedly connected below the feeding cover, a rotating shaft rotatably connected inside the feeding box, a partition fixedly connected to the outer wall of the rotating shaft, the end of the partition away from the rotating shaft abutting against the inner side wall of the feeding box, a cleaning assembly inside the crushing chamber, the cleaning assembly comprising a first distributor fixedly connected to both sides of the front end face of the crushing chamber, one outlet of the first distributor fixedly connected to a fixed cleaning pipe, the end of the fixed cleaning pipe away from the first distributor extending to the inner side of the crushing chamber, the other outlet of the first distributor connected to a rotating cleaning pipe via a rotary joint, the end of the rotating cleaning pipe away from the first distributor extending to the inner side of the crushing chamber, the fixed cleaning pipe located above the rotating cleaning pipe, multiple cleaning nozzles evenly spaced on the fixed cleaning pipe and the rotating cleaning pipe, and a U-shaped frame movably connected to the rear end of the crushing chamber for driving the rotating cleaning pipe to rotate.

[0006] The present invention is further configured such that: guide plates are fixedly connected to both sides of the upper part of the crushing box; crushing rollers are rotatably connected to both sides of the center of the crushing box; a screen is fixedly connected to the lower part of the crushing box; L-shaped plates are fixedly connected to the lower part of the outer walls on both sides of the crushing box; and support rods are fixedly connected to the transverse support arms of the L-shaped plates.

[0007] A further feature of this invention is that a first gear is fixedly connected to the rear end of the crushing roller, the first gears mesh with each other, and a first drive motor is fixedly connected to one side of the front end face of the crushing box via a motor frame, and the output shaft of the first drive motor is fixedly connected to the front end of one of the crushing rollers.

[0008] A further feature of this invention is that fixing rods are fixedly connected to the front and rear ends of both sides of the outer wall of the feeding box, and the top ends of the fixing rods are fixedly connected to the bottom perimeter of the feeding cover.

[0009] A further feature of this invention is that a connecting pipe is fixedly connected to the top of the feeding box, the top end of the connecting pipe extends to the lower interior of the feeding cover, and a feeding pipe is fixedly connected to the bottom of the feeding box.

[0010] A further feature of this invention is as follows: a mounting bracket is fixedly connected to the front end face of the feeding box, an electromagnetic brake is fixedly connected to the rear end face of the feeding box, the front end of the rotating shaft extends to the front outer side of the feeding box and is rotatably connected to the mounting bracket, the rear end of the rotating shaft extends to the rear outer side of the feeding box and is fixedly connected to the output shaft of the electromagnetic brake, a second gear is fixedly connected to the outer wall of the rotating shaft, the second gear is located between the feeding box and the mounting bracket, a second drive motor is fixedly connected to one side of the front end face of the mounting bracket, and a third gear is fixedly connected to the output shaft of the second drive motor, the third gear meshing with one side of the second gear.

[0011] A further feature of this invention is that an L-shaped frame is fixedly connected to one side of the first distributor, and the transverse support arm of the L-shaped frame is fixedly connected to the front end face of the crushing box.

[0012] A further feature of this invention is that a second distributor is fixedly connected to the inner walls of both sides of the pulverizing chamber, the air inlet end of the second distributor is fixedly connected to an air inlet pipe, and multiple air outlet ends of the second distributor are fixedly connected to drying nozzles.

[0013] A further feature of this invention is that: a mounting rod is fixedly connected to the rear end of the rotating cleaning tube, the rear end of the mounting rod extends to the outer rear of the crushing box and is fixedly connected to a fourth gear, and racks are fixedly connected to the inner walls on both sides of the U-shaped frame, with the racks meshing on one side of the fourth gear.

[0014] A further feature of this invention is that: mounting plates are fixedly connected to both the upper and lower sides of the rear end face of the crushing box, and sliding rods are fixedly connected to both sides of the adjacent mounting plates; a hydraulic cylinder is fixedly connected to the lower surface of the mounting plate; the output shaft of the hydraulic cylinder is fixedly connected to the bottom center of the U-shaped frame; and the transverse support arm of the U-shaped frame is slidably sleeved on the outer wall of the sliding rod.

[0015] This utility model has the following beneficial effects: 1. This utility model, by setting up a feeding component, starts the second drive motor and closes the electromagnetic brake. The output shaft of the second drive motor is connected by the meshing of the second gear and the third gear to drive the rotating shaft to rotate. The rotating shaft drives the partition to rotate inside the feeding box. Then, through the rotation of the partition, a certain amount of seed samples are discharged through the feeding pipe, which facilitates the quantitative packaging of the crushed seed samples, makes it easier to crush the seed samples, and makes it easier to test the seed samples. 2. This utility model, by setting up a cleaning component, connects the first distributor to an external cleaning liquid, allowing the cleaning liquid to flow into both the fixed cleaning tube and the rotating cleaning tube. The cleaning liquid is sprayed onto the crushing roller through the cleaning nozzle on the fixed cleaning tube, thus rinsing and cleaning the crushing roller. Simultaneously, the hydraulic cylinder is activated, which drives the rotating cleaning tube to rotate through the U-shaped frame and rack, and sprays the cleaning liquid onto the screen through the cleaning nozzle on the rotating cleaning tube, thus rinsing and cleaning the screen. This facilitates the cleaning of the crushing and screening structures, preventing seed sample residues or juices from remaining on the crushing or screening structures during the crushing process, avoiding cross-contamination between different seed samples, and facilitating the crushing and testing of seed samples. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front sectional view of the pulverizing box of this utility model; Figure 3 This is a schematic diagram of the structure of the crushing roller of this utility model; Figure 4 This is a schematic diagram of the material feeding assembly of this utility model; Figure 5 This is a schematic diagram of the structure of the feeding box of this utility model; Figure 6 This is a structural disassembly diagram of the rotating shaft, partition plate, and second drive motor of this utility model; Figure 7 This is a schematic diagram of the structure of the cleaning component of this utility model; Figure 8 This is a structural disassembly diagram of the fixed cleaning tube and the rotating cleaning tube of this utility model; Figure 9 This is a schematic diagram of the U-shaped frame of this utility model; Figure 10 This is a schematic diagram of the structure of the second shunt of this utility model; The attached diagram lists the components represented by each number as follows: 1-Grinding box, 101-Guide plate, 102-Grinding roller, 102a-First gear, 102b-First motor frame, 102c-First drive motor, 103-Screen, 104-L-shaped plate, 105-Support rod, 2-Discharging assembly, 201-Discharging cover, 202-Discharging box, 202a-Fixing rod, 202b-Connecting pipe, 202c-Discharging pipe, 202d-Mounting frame, 203-Rotating shaft, 203a-Second gear, 203b-Electromagnetic brake, 204-Baffle plate 205-Second drive motor, 205a-Third gear, 3-Cleaning assembly, 301-First distributor, 301a-L-shaped frame, 302-Fixed cleaning tube, 302a-Cleaning nozzle, 303-Rotating cleaning tube, 303a-Rotating joint, 303b-Mounting rod, 303c-Fourth gear, 304-U-shaped frame, 304a-Mounting plate, 304b-Slide rod, 304c-Hydraulic cylinder, 305-Rack, 4-Second distributor, 401-Air inlet pipe, 402-Drying nozzle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0018] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this is the first embodiment of the present invention. This embodiment provides a seed sample crusher, including a crushing box 1. The bottom of the crushing box 1 is provided with a feeding component 2. The feeding component 2 includes a feeding cover 201, a feeding box 202, a rotating shaft 203, and a partition 204. The rotating shaft 203 drives the partition 204 to rotate, and the crushed seed sample is quantitatively fed through the partition 204, which solves the problem of the existing method of inconvenient quantitative packaging of crushed seed samples.

[0019] Specifically, the feeding hood 201 is fixedly connected to the bottom of the crushing box 1, and the feeding box 202 is fixedly connected to the bottom of the feeding hood 201. The feeding box 202 is rotatably connected to the inside of the feeding box 202, and a partition 204 is fixedly connected to the outer wall of the rotating shaft 203. The end of the partition 204 away from the rotating shaft 203 is attached to the inner side wall of the feeding box 202. The feeding hood 201 is set to concentrate the crushed seed sample into the feeding box 202. The feeding box 202 is set to dispense the crushed seed sample. The rotating shaft 203 is set to install the partition 204 and drive the partition 204 to rotate. The partition 204 is set to quantitatively dispense the seed sample in the feeding box 202.

[0020] Furthermore, guide plates 101 are fixedly connected to both sides of the upper part of the crushing box 1, crushing rollers 102 are rotatably connected to both sides of the center inside the crushing box 1, screen 103 is fixedly connected to the lower part of the inside of the crushing box 1, L-shaped plates 104 are fixedly connected to the lower part of the outer walls on both sides of the crushing box 1, and support rods 105 are fixedly connected to the horizontal support arms of the L-shaped plates 104. The rear end of the crushing roller 102 is fixedly connected to a first gear 102a, and the first gears 102a mesh with each other. The front end face of the crushing box 1 is fixedly connected to a first drive motor 102c via a motor frame 102b. The output shaft of the first drive motor 102c is fixedly connected to the front end of one of the crushing rollers 102. The front and rear ends of both sides of the outer wall of the feeding box 202 are fixedly connected with fixing rods 202a, and the top ends of the fixing rods 202a are fixedly connected to the bottom of the feeding cover 201 around the perimeter. The top of the feeding box 202 is fixedly connected to a connecting pipe 202b, the top end of the connecting pipe 202b extends to the lower part of the feeding cover 201, and the bottom of the feeding box 202 is fixedly connected to a feeding pipe 202c. A mounting bracket 202d is fixedly connected to the front end face of the feeding box 202, and an electromagnetic brake 203b is fixedly connected to the rear end face of the feeding box 202. The front end of the rotating shaft 203 extends to the front outer side of the feeding box 202 and is rotatably connected to the mounting bracket 202d. The rear end of the rotating shaft 203 extends to the rear outer side of the feeding box 202 and is fixedly connected to the output shaft of the electromagnetic brake 203b. A second gear 203a is fixedly connected to the outer wall of the rotating shaft 203. The second gear 203a is located between the feeding box 202 and the mounting bracket 202d. A second drive motor 205 is fixedly connected to one side of the front end face of the mounting bracket 202d. A third gear 205a is fixedly connected to the output shaft of the second drive motor 205. The third gear 205a meshes with one side of the second gear 203a.

[0021] The operation process of this embodiment is as follows: the second drive motor 205 is started and the electromagnetic brake 203b is turned off. The output shaft of the second drive motor 205 is connected by the meshing of the second gear 203a and the third gear 205a, thereby driving the rotating shaft 203 to rotate. The rotating shaft 203 drives the partition 204 to rotate inside the feeding box 202. Then, through the rotation of the partition 204, a certain number of seed samples are discharged through the feeding pipe 202c, realizing the quantitative dispensing of the crushed seed samples. Example 2

[0022] Please see Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: a cleaning component 3 is also provided inside the crushing box 1. The cleaning component 3 includes a first diverter 301, a fixed cleaning pipe 302, a rotating cleaning pipe 303, and a U-shaped frame 304. The fixed cleaning pipe 302 is used to clean the crushing roller 102, and the rotating cleaning pipe 303 is used to clean the screen 103, which solves the problem that it is inconvenient to clean the crushing structure and the screening structure in the existing system.

[0023] Specifically, two first diverters 301 are provided and fixedly connected to both sides of the front end face of the grinding chamber 1. One outlet of the first diverter 301 is fixedly connected to a fixed cleaning pipe 302. The end of the fixed cleaning pipe 302 away from the first diverter 301 extends into the inside of the grinding chamber 1. The other outlet of the first diverter 301 is connected to a rotating cleaning pipe 303 through a rotary joint 303a. The end of the rotating cleaning pipe 303 away from the first diverter 301 extends into the inside of the grinding chamber 1. The fixed cleaning pipe 302 is located above the rotating cleaning pipe 303. Multiple cleaning nozzles 302a are evenly spaced on the fixed cleaning tube 302 and the rotating cleaning tube 303. A U-shaped frame 304 is movably connected to the rear end of the crushing box 1. The first diverter 301 is used to pour the cleaning liquid into the fixed cleaning tube 302 and the rotating cleaning tube 303 respectively. The fixed cleaning tube 302, together with the cleaning nozzles 302a, is used to rinse and clean the crushing roller 102. The rotating cleaning tube 303, together with the cleaning nozzles 302a, is used to rinse and clean the screen 103. The U-shaped frame 304 is used to drive the rotating cleaning tube 303 to rotate.

[0024] Furthermore, an L-shaped frame 301a is fixedly connected to one side of the first diverter 301, and the transverse support arm of the L-shaped frame 301a is fixedly connected to the front end face of the crushing box 1. A second distributor 4 is fixedly connected to both inner walls of the pulverizing box 1. The air inlet end of the second distributor 4 is fixedly connected to the air inlet pipe 401, and multiple air outlet ends of the second distributor 4 are fixedly connected to the drying nozzle 402. The rear end of the rotating cleaning tube 303 is fixedly connected to the mounting rod 303b. The rear end of the mounting rod 303b extends to the rear of the outer side of the crushing box 1 and is fixedly connected to the fourth gear 303c. The inner walls of both sides of the U-shaped frame 304 are fixedly connected to the racks 305, and the racks 305 are meshed on one side of the fourth gear 303c. Mounting plates 304a are fixedly connected to both the upper and lower ends of the rear end face of the crushing box 1. Slide rods 304b are fixedly connected to both sides of the adjacent mounting plates 304a. A hydraulic cylinder 304c is fixedly connected to the lower surface of the mounting plate 304a. The output shaft of the hydraulic cylinder 304c is fixedly connected to the bottom center of the U-shaped frame 304. The transverse support arm of the U-shaped frame 304 is slidably sleeved on the outer wall of the slide rod 304b.

[0025] The rest of the structure is the same as in Example 1.

[0026] The operation process of this embodiment is as follows: the first distributor 301 is connected to the external cleaning fluid, so that the cleaning fluid flows into the fixed cleaning pipe 302 and the rotating cleaning pipe 303 respectively. The cleaning fluid is sprayed onto the crushing roller 102 through the cleaning nozzle 302a on the fixed cleaning pipe 302, thereby rinsing and cleaning the crushing roller 102. At the same time, the hydraulic cylinder 304c is activated. The hydraulic cylinder 304c drives the rotating cleaning pipe 303 to rotate through the U-shaped frame 304 and the rack 305. The cleaning fluid is sprayed onto the screen 103 through the cleaning nozzle 302a on the rotating cleaning pipe 303, thereby rinsing and cleaning the screen 103.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A seed sample mill comprising a pulverizing box (1), characterized in that: The bottom of the pulverizing box (1) is provided with a discharging assembly (2), and the discharging assembly (2) comprises a discharging cover (201) fixedly communicated at the bottom of the pulverizing box (1), a discharging box (202) fixedly communicated below the discharging cover (201), and a rotating shaft (203) rotatably connected in the discharging box (202), wherein the outer wall of the rotating shaft (203) is fixedly connected with a partition plate (204), and the end of the partition plate (204) away from the rotating shaft (203) is attached to the inner side wall of the discharging box (202).

2. A seed sample mill according to claim 1, characterised in that The inside of the pulverizing box (1) is also provided with a cleaning assembly (3), and the cleaning assembly (3) comprises a first flow divider (301) fixedly connected to the two sides of the front end face of the pulverizing box (1), a fixed cleaning pipe (302) fixedly communicated with one of the water outlets of the first flow divider (301), and a rotating cleaning pipe (303) communicated with the other water outlet of the first flow divider (301) through a rotary joint (303a), wherein the end of the fixed cleaning pipe (302) away from the first flow divider (301) extends to the inside of the pulverizing box (1), the end of the rotating cleaning pipe (303) away from the first flow divider (301) extends to the inside of the pulverizing box (1), the fixed cleaning pipe (302) is located above the rotating cleaning pipe (303), and a plurality of cleaning nozzles (302a) are equidistantly communicated on the fixed cleaning pipe (302) and the rotating cleaning pipe (303).

3. A seed sample mill according to claim 2, characterised in that The inside of the pulverizing box (1) is also provided with a cleaning assembly (3), and the cleaning assembly (3) comprises a first flow divider (301) fixedly connected to the two sides of the front end face of the pulverizing box (1), a fixed cleaning pipe (302) fixedly communicated with one of the water outlets of the first flow divider (301), and a rotating cleaning pipe (303) communicated with the other water outlet of the first flow divider (301) through a rotary joint (303a), wherein the end of the fixed cleaning pipe (302) away from the first flow divider (301) extends to the inside of the pulverizing box (1), the end of the rotating cleaning pipe (303) away from the first flow divider (301) extends to the inside of the pulverizing box (1), the fixed cleaning pipe (302) is located above the rotating cleaning pipe (303), and a plurality of cleaning nozzles (302a) are equidistantly communicated on the fixed cleaning pipe (302) and the rotating cleaning pipe (303).

4. A seed sample mill according to claim 1, wherein The rear end of the pulverizing roller (102) is fixedly connected with a first gear (102a), and the first gears (102a) are meshed with each other.

5. A seed sample mill according to claim 4, characterised in that The front and rear ends of the outer walls of the two sides of the discharging box (202) are fixedly connected with fixed rods (202a), and the top ends of the fixed rods (202a) are fixedly connected to the bottom of the discharging cover (201). The top of the discharging box (202) is fixedly communicated with a connecting pipe (202b), and the top end of the connecting pipe (202b) extends to the inside below the discharging cover (201). The bottom of the discharging box (202) is fixedly communicated with a discharging pipe (202c).

6. A seed sample mill according to claim 1, wherein The front end face of the blanking box (202) is fixedly connected with a mounting rack (202d), and the rear end face of the blanking box (202) is fixedly connected with an electromagnetic brake (203b), the front end of the rotating shaft (203) extends to the front outside of the blanking box (202) and is rotationally connected to the mounting rack (202d), and the rear end of the rotating shaft (203) extends to the rear outside of the blanking box (202) and is fixedly connected with the output shaft of the electromagnetic brake (203b), the outer wall of the rotating shaft (203) is fixedly connected with a second gear (203a), and the second gear (203a) is located between the blanking box (202) and the mounting rack (202d), one side of the front end face of the mounting rack (202d) is fixedly connected with a second drive motor (205), and the output shaft of the second drive motor (205) is fixedly connected with a third gear (205a), and the third gear (205a) is engaged on one side of the second gear (203a).

7. A seed sample mill according to claim 1, wherein The first flow divider (301) is fixedly connected with an L-shaped bracket (301a), and the transverse branch of the L-shaped bracket (301a) is fixedly connected to the front end face of the crushing box (1).

8. A seed sample mill according to claim 7, characterised in that The two side inner walls of the crushing box (1) are fixedly connected with second flow dividers (4), and the air inlet end of the second flow divider (4) is fixedly connected with an air inlet pipe (401), and the air outlet end of the second flow divider (4) is fixedly connected with a drying nozzle (402).

9. A seed sample mill according to claim 1, wherein The rear end of the rotating cleaning pipe (303) is fixedly connected with a mounting rod (303b), and the rear end of the mounting rod (303b) extends to the rear outside of the crushing box (1) and is fixedly connected with a fourth gear (303c), the two side inner walls of the U-shaped bracket (304) are fixedly connected with racks (305), and the racks (305) are engaged on one side of the fourth gear (303c).

10. A seed sample mill according to claim 9, characterised in that The lower side of the rear end face of the crushing box (1) is fixedly connected with mounting plates (304a), and the two sides between the mounting plates (304a) are fixedly connected with slide rods (304b), the lower surface of the lower mounting plate (304a) is fixedly connected with a hydraulic cylinder (304c), and the output shaft of the hydraulic cylinder (304c) is fixedly connected to the bottom center of the U-shaped bracket (304), and the transverse branch of the U-shaped bracket (304) is slidingly sleeved on the outer wall of the slide rod (304b).

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