CN114834822A

CN114834822A - Orderly collection device of long straw crop

Info

Publication number: CN114834822A
Application number: CN202210260151.5A
Authority: CN
Inventors: 徐凤英; 许俊跃; 刘俊升; 陈震; 刘庆庭; 武涛; 邹小平; 张增学; 麦宝锋; 冯显亮; 周倬成; 黄俊鹏; 杨浩宏; 范浩俊
Original assignee: South China Agricultural University
Current assignee: South China Agricultural University
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-08-02
Anticipated expiration: 2042-03-16
Also published as: CN114834822B

Abstract

The invention relates to the technical field of crop collection, in particular to an orderly collection device for long straw crops, which comprises a rack, a transportation mechanism and a collection mechanism, wherein the transportation mechanism and the collection mechanism are respectively arranged on the rack, the collection mechanism is positioned below one end of the transportation mechanism, the transportation mechanism comprises a transportation driving assembly, a panel and at least two baffles, the transportation driving assembly is connected with the panel to drive the panel to move, the adjacent baffles are arranged on the outer surface of the panel at intervals, and the baffles are perpendicular to the movement direction of the panel. The invention can realize the orderly collection of long straw crops, can not damage the long straw crops, ensures the quality of the long straw crops, and has small occupied space and wide applicable scenes.

Description

Orderly collection device of long straw crop

Technical Field

The invention relates to the technical field of crop collection, in particular to an orderly collecting device for long-straw crops.

Background

The long-straw crops in China have many varieties, the annual straw production quantity is large, and the annual straw production quantity is hundreds of millions of tons. At present, the long straw harvesting of crops in China is influenced by the environment of the growth process, the long straw is bent frequently, and after the crops are automatically cut into sections in the field, the long straw is stacked and staggered in the vertical aggregate conveying process when the long straw is stacked and conveyed, so that the long straw is difficult to collect orderly. In the prior art, the straw is collected by adopting a sectional type long straw crushing mode, the industrialized (especially industrialized) application performance of materials is greatly reduced, the harvesting cost is high, the energy consumption is greatly increased, and the long straw cannot be stored for a long time after being crushed in a sectional mode, so that the whole straw type harvesting is more in line with the national conditions of China. At present, the prior art in China can not arrange disordered long straw crops, so that bundling is inconvenient, the collection efficiency of the long straw crops is influenced, and the value of crop straws can not be improved.

The prior art discloses a whole-stem sugarcane harvester, including overwhelming device, cutting device and collection device, cutting device is including rotating the cutting disc that sets up, and the top of cutting disc still encloses along its extending direction and is equipped with the promotion blade that is used for promoting the sugarcane. In this scheme, the wave indent through the pressure guide board realizes leading the sugarcane for can effectually prevent the sugarcane slope when the sugarcane card goes into to the wave inslot, utilize the protruding direction in wave indent, can realize allocating the sugarcane, allocate the sugarcane and lead to the pressure to the inslot, guarantee the orderliness of sugarcane pressure back direction, guarantee the harvesting efficiency of sugarcane. However, in the scheme, the guide grooves in the feeding guide plates are used for guiding and conveying single sugarcane, the sugarcane is lifted through the lifting blades, and finally the sugarcane is moved to the collecting box along the axial direction, the length of the collecting box is long, the sugarcane moves along the same direction from harvesting to collecting, the whole size of the harvester is large, the occupied space is large, and the applicable scene is limited.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the ordered collection device for the long straw crops, so that the volume of the device is reduced, the occupied space of the device is small, and the applicable scene is wide.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides an orderly collection device of long straw crop, includes frame, transport mechanism and collection mechanism, transport mechanism with collect the mechanism install respectively in the frame, just collect the mechanism and be located the below of transport mechanism's one end, transport mechanism is including transportation drive assembly, panel and two at least baffles, transportation drive assembly with the panel is connected in order to drive the panel removes, and is adjacent the baffle interval set up in the panel surface, just the baffle with the direction of motion of panel is perpendicular.

The orderly collecting device for the long straw crops can be installed at the tail part of the whole-straw harvester, after the whole-straw harvester harvests the long straw crops, the long straw crops sequentially drop on the panel between the two adjacent baffles, when the motion driving component drives the panel to move, the baffles on the panel and the long straw crops are driven to synchronously move, the baffles and the panel can not damage the long straw crops, and the quality of the long straw crops is ensured; when one baffle plate adjacent to the long straw crops moves to one end of the conveying mechanism and continues to move, the long straw crops gradually fall into the collecting mechanism from the panel, wherein the baffle plates are used for separating and blocking the long straw crops, so that the long straw crops orderly fall into the collecting mechanism, and the orderly collection of the long straw crops is realized; in addition, the axial direction of the long straw crops is parallel to the baffle, the baffle is perpendicular to the movement direction of the panel, the long straw crops move on the conveying mechanism along the radial direction of the long straw crops, finally fall into the collecting mechanism along the direction perpendicular to the conveying mechanism, the long straw crops are short in displacement in the horizontal direction, and the size of the device is reduced. The invention can realize the orderly collection of long straw crops, and the device occupies small space and has wide application scenes.

Further, the baffle is provided with a cambered surface structure.

Furthermore, the transportation mechanism also comprises a transportation framework for supporting the panel, and the transportation framework is fixedly arranged on the rack.

Further, the transportation driving assembly comprises a motor, a first wheel shaft, a second wheel shaft, a belt, a first belt pulley and a second belt pulley, the first belt pulley and the second belt pulley are connected through the belt, the motor is mounted on the frame, an output shaft of the motor is connected with the first wheel shaft, the first belt pulley is connected with the first wheel shaft, the second belt pulley is connected with the second wheel shaft, the second wheel shaft is rotatably mounted on the frame, and the panel is connected with the belt.

Further, the collecting mechanism comprises a collecting groove and a distributing mechanism, the collecting groove is fixedly arranged on the rack, the collecting groove is positioned below one end of the conveying mechanism, and the distributing mechanism is movably arranged at the bottom of the collecting groove.

Furthermore, the distribution mechanism comprises a distribution plate and a distribution driving assembly, the distribution driving assembly is arranged on the rack, the output end of the distribution driving assembly is connected with the distribution plate, and the distribution plate is movably arranged at the bottom of the material collecting tank.

Furthermore, a through groove is formed in the bottom of the material collecting groove, and the output end of the distribution driving assembly can be connected with the distribution plate so as to pull out or clamp the distribution plate in the through groove.

Furthermore, a photoelectric counter for counting the number of the long straw crops is also arranged on the frame.

Further, the frame is provided with a buffer mechanism for dropping the long straw crops to the collecting mechanism.

Further, buffer gear includes buffer board and connecting rod, the buffer board with the frame rotates to be connected, just the buffer board with transport mechanism's one end interval sets up, the one end of connecting rod with the frame is articulated, the other end of connecting rod with the buffer board is articulated.

Compared with the background art, the ordered collection device for the long straw crops has the following beneficial effects:

the baffle plate on the panel and the long straw crops can move synchronously, the baffle plate and the panel can not damage the long straw crops, and the quality of the long straw crops is ensured; the baffle plates are used for separating the long straw crops, so that the long straw crops can orderly fall to the collecting mechanism, and the long straw crops can be orderly collected; the axis direction of long straw crop is parallel with the baffle, and the motion direction of baffle and panel is perpendicular, and long straw crop is along self radial motion on conveyer, finally drops to collecting the mechanism along the direction perpendicular with the transport mechanism in, and the displacement of long straw crop in the horizontal direction is short, has reduced the volume of device, and the device occupation space is little, and applicable scene is extensive.

Drawings

FIG. 1 is a schematic structural view of an ordered collection device for long straw crops in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a baffle in an embodiment of the invention;

FIG. 3 is a schematic structural view of a transport mechanism in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a transport frame according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a collecting mechanism and a buffering mechanism according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a material collecting groove in the embodiment of the invention.

In the drawings: 1-a frame; 2-a transport mechanism; 21-a transport drive assembly; 211-a motor; 212-a first axle; 213-a second axle; 214-a first pulley; 215-a second pulley; 216-a belt; 22-a panel; 23-a baffle plate; 231-cambered surface structure; 24-a transport skeleton; 241-a support frame; 242-a support plate; 3-a buffer mechanism; 31-a rotating shaft; 32-a buffer plate; 321-a bending part; 33-a buffer skeleton; 34-a connecting rod; 4-a collection mechanism; 41-a material collecting groove; 411-a feed inlet; 412-a blanking port; 413-through groove; 414-a support portion; 415-an extension; 42-a distribution mechanism; 421-dial plate; 422-electric air rod; 423-connecting piece; 424-a slide; 425-a slide rail; 5-a controller; 6-photoelectric counter.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Example one

As shown in figures 1 and 3, the orderly collecting device for the long straw crops comprises a rack 1, a conveying mechanism 2 and a collecting mechanism 4, wherein the conveying mechanism 2 and the collecting mechanism 4 are respectively arranged on the rack 1, the collecting mechanism 4 is positioned below one end of the conveying mechanism 2, the conveying mechanism 2 comprises a conveying driving component 21, a panel 22 and at least two baffle plates 23, the conveying driving component 21 is connected with the panel 22 to drive the panel 22 to move, the adjacent baffle plates 23 are arranged at the top of the panel 22 at intervals, and the baffle plates 23 are perpendicular to the movement direction of the panel 22.

The orderly collecting device for the long straw crops can be installed at the tail part of the whole-straw harvester, after the whole-straw harvester harvests the long straw crops, the long straw crops sequentially drop on the panel 22 between the two adjacent baffles 23, when the motion driving assembly 21 drives the panel 22 to move, the baffles 23 on the panel 22 and the long straw crops are driven to synchronously move, the baffles 23 and the panel 22 cannot damage the long straw crops, and the quality of the long straw crops is ensured; when one of the baffles 23 adjacent to the long straw crops moves to one end of the moving mechanism 2 and continues to move, the long straw crops gradually fall from the panel 22 to the collecting mechanism 4, wherein the baffles 23 are used for separating and blocking the long straw crops, so that the long straw crops orderly fall to the collecting mechanism 4, and the long straw crops are orderly collected, in addition, the axial direction of the long straw crops is parallel to the baffles 23, the baffles 23 are perpendicular to the moving direction of the panel 22, the long straw crops move on the conveying device along the radial direction of the long straw crops and finally fall to the collecting mechanism 4 along the direction perpendicular to the conveying mechanism 2, the displacement of the long straw crops in the horizontal direction is short, and the size of the device is reduced. The embodiment can realize the orderly collection of long straw crops, and the device occupies a small space and is widely applicable to scenes.

As shown in fig. 2 and 3, the baffle 23 is provided with an arc structure 231. During implementation, the arc-shaped structures 231 of the baffles 23 can buffer long straw crops, and when one of the baffles 23 adjacent to the long straw crops moves to one end of the moving mechanism 2 and continues to move, the long straw crops move to the arc-shaped structures 231 of the baffles 23 from the panel 22 and then fall to the collecting mechanism 4 from the arc-shaped structures 231.

As shown in fig. 1 and 3, the transportation driving assembly 21 includes a motor 211, a first wheel shaft 212, a second wheel shaft 213, a belt 216, a first belt pulley 214 and a second belt pulley 215 connected by the belt 216, the motor 211 is mounted on the frame 1, an output shaft of the motor 211 is connected to the first wheel shaft 212, the first belt pulley 214 is connected to the first wheel shaft 212, the second belt pulley 215 is connected to the second wheel shaft 213, the second wheel shaft 213 is rotatably mounted on the frame 1, and the panel 22 is connected to the belt 216. In practice, long straw crops fall on the panel 22 between two adjacent baffles 23, the motor 211 operates to drive the first wheel shaft 212 to rotate, so as to drive the first belt pulley 214, the belt 216, the second belt pulley 215 and the second wheel shaft 213 to move, wherein the panel 22 is connected with the belt 216, and the belt 216 drives the panel 22 to move circularly. Specifically, the first belt pulley 214, the second belt pulley 215 and the belt 216 are respectively provided with two belt pulleys located at two sides of the panel 22, the two first belt pulleys 214 are respectively and fixedly installed at two ends of the first wheel shaft 212, the two second belt pulleys 215 are respectively and fixedly installed at two ends of the second wheel shaft 213, the first belt pulley 214 and the second belt pulley 215 located at the same side of the panel 22 are connected through the belt 216, when the motor 211 operates to drive the first wheel shaft 212 to rotate, the two belt pulleys 216 can be driven to synchronously and circularly move, and the stable movement of the panel 22 is ensured.

As shown in fig. 1 and 4, the transportation mechanism 2 further includes a transportation framework 24 for supporting the panel 22, and the transportation framework 24 is fixedly mounted on the frame 1. Specifically, the transportation framework 24 includes a support frame 241 and a plurality of support plates 242 fixedly connected to the support frame 241, the support frame 241 is fixed to the frame 1, the shape of the support frame 241 matches with the circulation path of the panel 22, the plurality of support plates 242 are arranged in parallel, the support plates 242 are perpendicular to the plane of the support frame 241, and the support plates 242 and the support frame 241 cooperate to stably support the panel 22 and the long straw crops thereon.

Example two

The present embodiment is similar to the second embodiment, except that, as shown in fig. 1, fig. 5 and fig. 6, the collecting mechanism 4 includes a collecting trough 41 and a distributing mechanism 42, the collecting trough 41 is fixedly installed on the frame 1, the collecting trough 41 is located below one end of the transporting mechanism 2, and the distributing mechanism 42 is movably installed at the bottom of the collecting trough 41. Specifically, the top of collecting chute 41 is equipped with feeding opening 411, the bottom of collecting chute 41 is equipped with blanking mouth 412, and collecting chute 41's size reduces from feeding opening 411 to blanking mouth 412 direction gradually, when allocating mechanism 42 and being located collecting chute 41 bottom, shelter from blanking mouth 412, and the long straw crop that drops from transport mechanism 2 can get into collecting chute 41 from feeding opening 411, and support by allocating mechanism 42, when the long straw crop in collecting chute 41 reaches a certain quantity, allocate mechanism 42 through adjusting, can expose blanking mouth 412, make the long straw crop in collecting chute 41 drop from blanking mouth 412, repeat the above-mentioned operation, can realize allocating the pile to long straw crop.

As shown in fig. 5 and 6, an extension portion 415 extending in a direction away from the transportation mechanism 2 is disposed on one side of the material collecting groove 41 away from the transportation mechanism 2, and the baffle 23 cannot adjust the long straw crops due to the possible bending of the long straw crops, so that the long straw crops can be limited by the extension portion 415, and further adjustment of the long straw crops can be performed.

As shown in fig. 1 and 5, the distributing mechanism 42 includes a distributing plate 421 and a distributing driving assembly, the distributing driving assembly is installed in the frame 1, an output end of the distributing driving assembly is connected to the distributing plate 421, and the distributing plate 421 is movably installed at the bottom of the collecting trough 41. Specifically, logical groove 413 has been seted up to groove 41 bottom that gathers materials, make groove 41 bottom that gathers materials form supporting part 414, it is hollow structure to divide dial plate 421, can alleviate the weight of dividing dial plate 421, the output of being convenient for divide dial drive assembly will divide dial plate 421 to pull out or the card is arranged in logical groove 413 when dividing dial drive assembly to be connected with dial plate 421, when dividing dial plate 421 to promote to divide dial plate 421 to install in logical groove 413, long straw crop that gathers in groove 41 that gathers materials falls on dividing dial plate 421, divide dial plate 421 to support long straw crop, supporting part 414 can further support dividing dial plate 421, prevent to divide dial plate 421 to receive the too big damage of pressure of long straw crop.

As shown in fig. 1 and 5, the distribution driving assembly comprises a plurality of electric air rods 422 and a connecting piece 423, the electric air rods 422 are installed in the frame 1, one end of the connecting piece 423 is connected with the output end of the electric air rods 422, the other end of the connecting piece 423 is fixedly connected with the distribution plate 421, the running states of the electric air rods 422 are kept consistent, and the stable motion of the distribution plate 421 is ensured.

As shown in fig. 5, the distributing mechanism 42 further includes a guiding component, the guiding component includes a sliding rail 425 and a sliding seat 424, the sliding rail 425 is fixedly disposed on the frame 1, the distributing plate 421 is fixedly connected to the sliding seat 424, when the electric air rod 422 pushes or pulls the connecting member 423, the sliding seat 424 moves along the sliding rail 425 to guide the distributing plate 421, and further, the stable movement of the distributing plate 421 is ensured.

EXAMPLE III

The embodiment is similar to the second embodiment, except that, as shown in fig. 1, the frame 1 is further provided with a photoelectric counter 6 for counting the number of long straw crops. When the photoelectric counter 6 measures a certain amount of long straw crops, the long straw crops in the collecting trough 41 can fall to the ground and be collected by controlling the distributing mechanism 42.

As shown in fig. 1 and 5, the frame 1 is further provided with a controller 5, the photoelectric counter 6 and the electric air rod 422 are respectively connected with the controller 5, preset values are set, and when the number of the long straw crops falling into the collecting chute 41 and measured by the photoelectric counter 6 reaches the preset values, the controller 5 controls the electric air rod 422 to pull the distributing plate 421 out of the through groove 413, so that the long straw crops are discharged and stacked.

Example four

This embodiment is similar to the third embodiment, except that, as shown in fig. 1 and 5, the frame 1 is provided with a buffer mechanism 3 for dropping the long straw crop to the collecting mechanism 4. Because the long straw crops are irregular in shape and different in bending degree, the long straw crops may not fall on the panel 22 between the two adjacent baffles 23 when falling, the long straw crops stretch over the upper parts of the two adjacent baffles 23, when one of the two baffles 23 moves to one end of the conveying mechanism 2 first and continues to move, the long straw crops gradually stretch out of the panel 22 until contacting the buffer mechanism 3, and the buffer mechanism 3 stops and adjusts the long straw crops to enable the long straw crops to fall into the collecting groove 41 below.

As shown in fig. 1 and 5, the buffer mechanism 3 includes a buffer plate 32 and a connecting rod 34, the buffer plate 32 is rotatably connected to the frame 1, the buffer plate 32 is spaced from one end of the transportation mechanism 2, one end of the connecting rod 34 is hinged to the frame 1, and the other end of the connecting rod 34 is hinged to the buffer plate 32. Specifically, one end of the buffer plate 32 is provided with a rotating shaft 31, two ends of the rotating shaft 31 are respectively rotatably connected with the frame 1, the frame 1 is provided with a bearing seat, a bearing is arranged in the bearing seat, the rotating shaft 31 is arranged in the bearing in a penetrating way, a brass sleeve can be arranged between the bearing and the bearing seat, in order to enhance the wear resistance, the back of the buffer plate 32 is fixedly provided with a plurality of buffer frameworks 33, one end of a connecting rod 34 is hinged with the frame 1, the other end of the connecting rod 34 is hinged with the buffer frameworks 33, when long straw crops span the upper parts of two adjacent baffle plates 23, in the moving process of the panel 22, the long straw crops gradually approach, contact and press the buffer plate 32, the buffer plate 32 can rotate along with the rotating shaft 31, when the long straw crops move, the buffer plate 32 has reaction force to the long straw crops, the position of the long straw crop is adjusted, so that the long straw crop rotates to the central axis of the long straw crop to be parallel to the baffle 23 and then falls into the material collecting groove 41.

As shown in fig. 1 and 5, the bottom of the buffer plate 32 is provided with a bent portion 321 extending toward the trough 41, and the end of the bent portion 321 is located inside the extending portion 415, so that when the long straw crop falls down under the adjusting action of the buffer plate 32, the long straw crop moves along the bent portion 321 to the inside of the extending portion 415, thereby ensuring that the adjusted long straw crop falls into the trough 41.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a collection device in order of long straw crop, includes frame (1), transport mechanism (2) and collects mechanism (4), transport mechanism (2) and collection mechanism (4) install respectively in frame (1), just it is located to collect mechanism (4) the below of the one end of transport mechanism (2), its characterized in that, transport mechanism (2) are including transportation drive assembly (21), panel (22) and two at least baffles (23), transportation drive assembly (21) with panel (22) are connected in order to drive panel (22) remove, and are adjacent baffle (23) interval set up in panel (22) surface, just baffle (23) with the direction of motion of panel (22) is perpendicular.

2. An ordered collection device of long straw crops as claimed in claim 1, wherein the baffle plate (23) is provided with a cambered surface structure (231).

3. The apparatus for orderly collecting long straw crops as claimed in claim 1, wherein the transportation mechanism (2) further comprises a transportation framework (24) for supporting the panel (22), and the transportation framework (24) is fixedly arranged on the frame (1).

4. The apparatus for orderly collecting long straw crops as claimed in claim 1, wherein the transportation driving assembly (21) comprises a motor (211), a first wheel axle (212), a second wheel axle (213), a belt (216), a first belt pulley (214) and a second belt pulley (215) connected by the belt (216), the motor (211) is installed on the frame (1), an output shaft of the motor (211) is connected with the first wheel axle (212), the first belt pulley (214) is connected with the first wheel axle (212), the second belt pulley (215) is connected with the second wheel axle (213), the second wheel axle (213) is rotatably installed on the frame (1), and the panel (22) is connected with the belt (216).

5. The orderly collecting device of long straw crops as claimed in claim 1, wherein said collecting mechanism (4) comprises a collecting trough (41) and a distributing mechanism (42), said collecting trough (41) is fixedly installed on said frame (1), and said collecting trough (41) is located under one end of said transporting mechanism (2), said distributing mechanism (42) is movably installed at the bottom of said collecting trough (41).

6. The orderly collecting device of long straw crops according to claim 5, wherein the distribution mechanism (42) comprises a distribution plate (421) and a distribution driving component, the distribution driving component is installed on the frame (1), the output end of the distribution driving component is connected with the distribution plate (421), and the distribution plate (421) is movably installed at the bottom of the collecting trough (41).

7. The orderly collecting device of long straw crops as claimed in claim 6, wherein the bottom of the collecting trough (41) is opened with a through slot (413), and the output end of the distribution driving component can be connected with the distribution plate (421) to pull out or clamp the distribution plate (421) in the through slot (413).

8. The orderly collection device of long straw crops of claim 1, characterized in that the frame (1) is further provided with a photoelectric counter (6) for counting the number of long straw crops.

9. An ordered collection device of long straw crops as claimed in any one of claims 1 to 8, wherein the frame (1) is provided with a cushioning mechanism (3) for dropping the long straw crops to the collection mechanism (4).

10. The orderly collection device of long straw crops of claim 9, wherein the buffer mechanism (3) comprises a buffer plate (32) and a connecting rod (34), the buffer plate (32) is rotatably connected with the frame (1), the buffer plate (32) is arranged at a distance from one end of the transportation mechanism (2), one end of the connecting rod (34) is hinged with the frame (1), and the other end of the connecting rod (34) is hinged with the buffer plate (32).