CN111052900A - Building land restoration device - Google Patents
Building land restoration device Download PDFInfo
- Publication number
- CN111052900A CN111052900A CN201911352050.5A CN201911352050A CN111052900A CN 111052900 A CN111052900 A CN 111052900A CN 201911352050 A CN201911352050 A CN 201911352050A CN 111052900 A CN111052900 A CN 111052900A
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- Prior art keywords
- discharging
- hydraulic cylinder
- delivery
- delivering
- capturing
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B43/00—Gatherers for removing stones, undesirable roots or the like from the soil, e.g. tractor-drawn rakes
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B77/00—Machines for lifting and treating soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/005—Crushing or disintegrating by reciprocating members hydraulically or pneumatically operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/14—Stamping mills
Abstract
The invention aims to provide a building land repairing device which is used for solving the technical problem of removing building waste below the ground surface after the building land is turned over. A building land repairing device is arranged at the rear end of a driving vehicle (such as a tractor) and is used for removing building garbage (such as bricks and cement blocks) below the ground surface after the building land is turned over so as to meet the requirement of land secondary tillage; the device comprises a main frame 1, a control system, a picking system, a discharging mechanism and a crushing mechanism, wherein the picking system, the discharging mechanism and the crushing mechanism are electrically connected with the control system. The picking system is used for acquiring the construction waste in the soil; the unloading mechanism is used for receiving the construction waste obtained by the picking system, and when the construction waste is collected by a certain amount, the construction waste is centralized and uniformly discharged; the crushing mechanism is used for crushing the soil blocks mixed in the construction waste and shaking off the soil blocks before the construction waste is discharged by the discharging mechanism.
Description
Technical Field
The invention relates to the technical field of farmland restoration machinery, in particular to a restoration device for construction land.
Background
The red line relation of the cultivated land is food safety, and some illegal persons can carry out illegal construction on the cultivated land in order to obtain economic benefit. After the building on the cultivated land is removed, the land is usually turned over by a rotary cultivator. However, during the operation process, some construction wastes are buried under the ground surface and cannot be removed, and the growth of crops can still be influenced.
Disclosure of Invention
The invention aims to provide a building land repairing device which is used for solving the technical problem of removing building waste below the ground surface after the building land is turned over.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the construction site repair device comprises a pickup shell, a pickup and capture mechanism and a pickup and delivery mechanism; the picking and capturing mechanism comprises a capturing roller, a capturing rake and a capturing and unloading driving motor, the capturing roller is rotatably arranged in the picking shell, and the rotary power output end of the capturing and unloading driving motor is connected with the rotary power input end of the capturing roller; the capturing rake is of an arc structure and is provided with two sets of capturing rollers which are respectively arranged at intervals, and the capturing rake comprises a plurality of capturing teeth which are arranged adjacently;
the picking and delivering mechanism is arranged in the rear end part of the picking shell and comprises a delivering basket, a delivering frame, a delivering driving hydraulic cylinder, a delivering rotating shaft and a delivering unloading motor; the delivery rotating shaft is rotatably arranged on the pickup shell, and a rotary power output end of the delivery unloading motor is connected with a rotary power input end of the delivery rotating shaft; the delivery frame is arranged in the pickup shell, and the rear end of the delivery frame is connected with the delivery rotating shaft; the delivery basket is mounted on the delivery frame in a back-and-forth sliding mode and is connected with the delivery frame through a delivery driving hydraulic cylinder;
the rear end of the picking shell is provided with a picking and discharging window.
Furthermore, a capture sensor is arranged on the capture tooth.
Furthermore, one side of the upper part in the picking shell is provided with a discharging detection switch.
Further, the picking and delivering mechanism comprises a delivering and collecting hydraulic cylinder, the delivering and collecting hydraulic cylinder is installed on the inner side of the delivering basket, and a delivering and collecting plate is arranged at the power output end of the delivering and collecting hydraulic cylinder;
the picking and discharging window is arranged corresponding to the outer side part of the delivery basket.
Furthermore, the rear end of the picking shell is provided with a discharging mechanism, the discharging mechanism comprises a discharging cavity, a discharging driving hydraulic cylinder, a discharging plate, a discharging valve and a discharging door driving hydraulic cylinder;
the discharge cavity is positioned at the rear side of the pickup shell and is communicated with the pickup discharge window; the unloading driving hydraulic cylinder is arranged at the outer side end of the unloading cavity, the unloading plate can be arranged in the unloading cavity in an internal and external moving mode, and the power output end of the unloading driving hydraulic cylinder is connected with the unloading plate; the inner side end of the discharging cavity is provided with a discharging opening, and the discharging valve can be vertically moved and is arranged at the discharging opening; the discharge door driving hydraulic cylinder is vertically arranged above the discharge opening, and the power output end of the discharge door driving hydraulic cylinder is connected with the discharge valve.
Furthermore, the upper end of the inner side of the discharging plate is provided with a discharging detector.
Furthermore, a crushing mechanism is arranged at the outer side end of the discharging cavity and comprises a crushing hydraulic cylinder, a crushing plate, a crushing hammer and a spring rod; the crushing plate can be vertically moved and is arranged above the outer end part in the discharging cavity, the crushing hydraulic cylinder is arranged at the upper end of the discharging cavity, and the power output end below the crushing hydraulic cylinder is connected with the crushing plate; the crushing hammers are arranged below the crushing plate respectively, and the upper ends of the crushing hammers are connected with the crushing plate through spring rods;
furthermore, the lower end surface of the discharging cavity adopts a sieve plate structure.
Furthermore, one side of the picking and discharging window is provided with a crushing detection switch.
Further, the lower end part of the breaking hammer is made of hard rubber materials.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
1. according to the technical scheme, the construction waste below the ground surface can be brought above the ground surface in the technology of rotary tillage of the soil by the rotary cultivator, and is collected in a centralized manner and then discharged in a unified manner.
2. Pick up and deliver mechanism and utilize and deliver the flitch and push away building rubbish to the one side of delivering the basket to in with building rubbish leading-in discharge chamber's rear end portion through picking up the window of unloading, the broken mechanism of being convenient for is to the concentrated breakage of large-scale clod.
3. The unloading mechanism can discharge the construction waste in a centralized manner according to the temporarily stored construction waste.
Drawings
FIG. 1 is a schematic side view of an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a pickup system in an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is a schematic longitudinal sectional view at a pickup system in an embodiment of the present invention;
FIG. 5 is a schematic longitudinal sectional view of the discharge mechanism and crushing mechanism in cooperation according to an embodiment of the present invention;
in the figure: 1. a main frame; 2. a pickup housing; 3. a capturing roller; 4. a capturing rake; 5. a capture sensor; 6. a capture discharge drive motor; 7. a discharge detection switch; 8. a delivery basket; 9. a delivery aggregate hydraulic cylinder; 10. a delivery rack; 11. a delivery drive hydraulic cylinder; 12. a delivery spindle; 13. a delivery discharge motor; 14. delivering a material collecting plate; 15. a picking and discharging window; 16. a discharge chamber; 17. the unloading drives the fluid cylinder; 18. a stripper plate; 19. a discharge valve; 20. the discharge door drives the hydraulic cylinder; 21. a discharge detector; 22. a crushing hydraulic cylinder; 23. a breaker plate; 24. a breaking hammer; 25. a crush detection switch; 26. a spring rod.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and techniques are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1 to 5, a construction site repairing device is installed at the rear end of a driving vehicle (such as a tractor) and is used for removing construction wastes (such as bricks and cement blocks) below the ground surface after the construction site is turned over so as to meet the requirement of land secondary tillage; the device comprises a main frame 1, a control system, a picking system, a discharging mechanism and a crushing mechanism, wherein the picking system, the discharging mechanism and the crushing mechanism are electrically connected with the control system. The picking system is used for acquiring the construction waste in the soil; the unloading mechanism is used for receiving the construction waste obtained by the picking system, and when the construction waste is collected by a certain amount, the construction waste is centralized and uniformly discharged; the crushing mechanism is used for crushing the soil blocks mixed in the construction waste and shaking off the soil blocks before the construction waste is discharged by the discharging mechanism.
Pick-up mechanism catches the mechanism and picks up delivery mechanism including picking up casing 2, picking up, picks up and catches the mechanism and be used for catching the stone in the soil, picks up delivery mechanism and is used for catching the stone that mechanism caught and transmit to shedding mechanism. The picking and capturing mechanism comprises a capturing roller 3, a capturing rake 4, a capturing sensor 5, a capturing and discharging driving motor 6 and a discharging detection switch 7. Catch running roller 3 and pass through the rotatable horizontal installation of pivot and pick up on 2 front ends of casing, catch the driving motor 6 that unloads and adopt step motor, also install on picking up casing 2, its rotatory power take off end is connected with the rotatory power input of catching running roller 3. The capturing rake 4 adopts an arc structure, and the capturing rake 4 is provided with two sets of rollers which are respectively arranged on the capturing roller 3 at intervals of 180 degrees. The catch rake 4 comprises a plurality of catch teeth arranged adjacently; catch sensor 5 and adopt pressure sensor, catch sensor 5 and install respectively on catching the tooth for whether detect building rubbish and get into and catch 4 in, so that catch the certain angle of unloading driving motor 6 drive catch running roller 3 rotation, make the building rubbish of catching fall into pick up and deliver in the mechanism. The unloading detection switch 7 is transversely installed on one side of the upper part in the picking shell 2 and used for detecting whether the capturing rake 4 rotates to the position or not so as to facilitate the timely action of the picking and delivering mechanism to the position. The picking and delivering mechanism is arranged in the rear end part of the picking shell 2 and comprises a delivering basket 8, a delivering and collecting hydraulic cylinder 9, a delivering rack 10, a delivering and driving hydraulic cylinder 11, a delivering rotating shaft 12 and a delivering and unloading motor 13. The delivery rotating shaft 12 is rotatably installed at the rear part of the pickup housing 2, the delivery discharging motor 13 is also installed on the pickup housing 2, and the rotary power output end of the delivery discharging motor 13 is connected with the rotary power input end of the delivery rotating shaft 12. The delivery rack 10 is transversely arranged on the pickup shell 2, the rear end of the delivery rack 10 is rotatably connected with the delivery rotating shaft 12, and a delivery chute is arranged on the inner side of the delivery rack 10; the delivery basket 8 is arranged on the delivery frame 10 in a back-and-forth sliding mode, and two sides of the delivery basket 8 are arranged in the delivery sliding grooves in a sliding mode through delivery sliding blocks; the lower end of the delivery basket 8 is connected to the delivery frame 10 at the rear by the delivery drive cylinder 11. The delivery aggregate hydraulic cylinder 9 is arranged on the inner side of the delivery basket 8, and a delivery aggregate plate 14 is arranged at the power output end of the delivery aggregate hydraulic cylinder 9; the delivery aggregate plate 14 is driven by the delivery aggregate cylinder 9 to push the construction waste to the outside of the delivery basket 8. A picking and unloading window 15 is arranged at the rear end of the picking shell 2, and the picking shell 2 is communicated with an unloading mechanism through the picking and unloading window 15; the pickup-and-discharge window 15 is provided corresponding to an outer side portion of the delivery basket 8. The work of the pick-up mechanism is kept away as follows: when the capturing rake 4 contains construction waste, the capturing roller 3 drives the capturing rake 4 to rotate in place, and meanwhile, the delivery basket 8 extends forwards under the driving of the delivery driving hydraulic cylinder 11; the construction waste in the catching rake 4 falls into the delivery basket 8, and the delivery material collecting plate 14 pushes the construction waste to the inner and outer end sides of the delivery basket 8. Then, the delivery rotating shaft 12 drives the delivery rack 10 to rotate; the construction waste in the delivery basket 8 will fall through the pick-up discharge window 15 into the crushing mechanism.
The discharging mechanism comprises a discharging cavity 16, a discharging driving hydraulic cylinder 17 (an oil cylinder with a displacement sensor arranged therein), a discharging plate 18, a discharging valve 19, a discharging door driving hydraulic cylinder 20 and a discharging detector 21. The unloading cavity 16 is positioned at the rear side of the picking shell 2 and is communicated with the picking unloading window 15; the lower end surface of the discharging cavity 16 adopts a sieve plate structure, and a certain distance is arranged between the lower end of the discharging cavity 16 and the ground. The discharging driving hydraulic cylinder 17 is transversely arranged at the outer side end of the discharging cavity 16, and the discharging plate 18 can be arranged in the discharging cavity 16 in an inner-outer moving mode; the power output end of the discharging driving hydraulic cylinder 17 is connected with a discharging plate 18. The inner side end of the discharging cavity 16 is provided with a discharging opening, and a discharging valve 19 can be vertically moved and arranged at the discharging opening; the discharge door driving hydraulic cylinder 20 is vertically installed above the discharge opening, and the power output end of the discharge door driving hydraulic cylinder 20 is connected with the discharge valve 19. The discharging detector 21 (such as an ultrasonic distance sensor) is installed at the upper end of the inner side of the discharging plate 18 and is used for detecting the storage amount of the construction waste in the discharging cavity 16 so as to discharge the construction waste quantitatively in time.
The crushing mechanism includes a crushing hydraulic cylinder 22, a crushing plate 23, a crushing hammer 24, a crushing detection switch 25, and a spring rod 26. The breaking detection switch 25 (such as a correlation photoelectric sensor) is installed at one side of the picking and discharging window 15, and is used for detecting whether construction waste enters the discharging cavity 16, so as to facilitate the action of the breaking hydraulic cylinder 22. The crushing plate 23 can be installed above the outer end part in the unloading cavity 16 in a vertically moving mode, the crushing hydraulic cylinder 22 is installed at the upper end of the unloading cavity 16, and the power output end below the crushing hydraulic cylinder 22 is connected with the crushing plate 23. A plurality of breaking hammers 24 are arranged below the breaking plate 23 respectively, and the upper ends of the breaking hammers 24 are connected with the breaking plate 23 through spring rods 26; the lower end of the breaking hammer 24 is made of hard rubber material. After the construction waste enters the discharging cavity 16, the large soil blocks doped in the construction waste are crushed by the crushing mechanism so as to avoid redundant soil blocks doped in the construction waste.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and various modifications and variations can be made by those skilled in the art without inventive efforts based on the technical solution of the present invention.
Claims (10)
1. The building site repairing device is characterized by comprising a pickup shell, a pickup capturing mechanism and a pickup delivery mechanism; the picking and capturing mechanism comprises a capturing roller, a capturing rake and a capturing and unloading driving motor, the capturing roller is rotatably arranged in the picking shell, and the rotary power output end of the capturing and unloading driving motor is connected with the rotary power input end of the capturing roller; the capturing rake is of an arc structure and is provided with two sets of capturing rollers which are respectively arranged at intervals, and the capturing rake comprises a plurality of capturing teeth which are arranged adjacently;
the picking and delivering mechanism is arranged in the rear end part of the picking shell and comprises a delivering basket, a delivering frame, a delivering driving hydraulic cylinder, a delivering rotating shaft and a delivering unloading motor; the delivery rotating shaft is rotatably arranged on the pickup shell, and a rotary power output end of the delivery unloading motor is connected with a rotary power input end of the delivery rotating shaft; the delivery frame is arranged in the pickup shell, and the rear end of the delivery frame is connected with the delivery rotating shaft; the delivery basket is mounted on the delivery frame in a back-and-forth sliding mode and is connected with the delivery frame through a delivery driving hydraulic cylinder;
the rear end of the picking shell is provided with a picking and discharging window.
2. The device as claimed in claim 1, wherein the catching teeth are provided with catching sensors.
3. The apparatus for repairing construction site as claimed in claim 1, wherein a discharge detection switch is provided at one side of an upper portion of the picking-up housing.
4. The device for repairing construction site as claimed in claim 1, wherein the picking and delivering mechanism comprises a delivering and collecting hydraulic cylinder, the delivering and collecting hydraulic cylinder is installed inside the delivering basket, and a power output end of the delivering and collecting hydraulic cylinder is provided with a delivering and collecting plate;
the picking and discharging window is arranged corresponding to the outer side part of the delivery basket.
5. The device for repairing construction site as claimed in claim 1, wherein a discharging mechanism is provided at the rear end of the pickup housing, the discharging mechanism comprising a discharging chamber, a discharging driving hydraulic cylinder, a discharging plate, a discharging valve and a discharging door driving hydraulic cylinder;
the discharge cavity is positioned at the rear side of the pickup shell and is communicated with the pickup discharge window; the unloading driving hydraulic cylinder is arranged at the outer side end of the unloading cavity, the unloading plate can be arranged in the unloading cavity in an internal and external moving mode, and the power output end of the unloading driving hydraulic cylinder is connected with the unloading plate; the inner side end of the discharging cavity is provided with a discharging opening, and the discharging valve can be vertically moved and is arranged at the discharging opening; the discharge door driving hydraulic cylinder is vertically arranged above the discharge opening, and the power output end of the discharge door driving hydraulic cylinder is connected with the discharge valve.
6. The restoring apparatus for construction site according to claim 5, wherein the discharge plate is provided at an inner upper end thereof with a discharge detector.
7. The device for repairing construction site as claimed in claim 5, wherein a breaking mechanism is provided at the outer end of the unloading chamber, the breaking mechanism comprising a breaking hydraulic cylinder, a breaking plate, a breaking hammer and a spring rod; the crushing plate can be vertically moved and is arranged above the outer end part in the discharging cavity, the crushing hydraulic cylinder is arranged at the upper end of the discharging cavity, and the power output end below the crushing hydraulic cylinder is connected with the crushing plate; the quartering hammer is equipped with a plurality ofly, sets up respectively in the below of crushing shell, and the upper end of quartering hammer is passed through the spring beam and is connected with the crushing shell.
8. The apparatus for repairing construction site as claimed in claim 5, wherein the lower end surface of the discharge chamber is of a sieve plate structure.
9. The repairing device for construction site as claimed in claim 5, wherein a breakage detecting switch is provided at one side of the pick-up and discharge window.
10. The apparatus for repairing construction site as claimed in claim 7, wherein the lower end portion of the breaking hammer is made of hard rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352050.5A CN111052900B (en) | 2019-12-23 | 2019-12-23 | Building land restoration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352050.5A CN111052900B (en) | 2019-12-23 | 2019-12-23 | Building land restoration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111052900A true CN111052900A (en) | 2020-04-24 |
| CN111052900B CN111052900B (en) | 2022-02-25 |
Family
ID=70303318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911352050.5A Active CN111052900B (en) | 2019-12-23 | 2019-12-23 | Building land restoration device |
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| Country | Link |
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| CN (1) | CN111052900B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112889364A (en) * | 2021-01-20 | 2021-06-04 | 海南龙宝农业设备有限公司 | Protector for agricultural machinery |
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| US4555897A (en) * | 1984-01-13 | 1985-12-03 | Degelman Industries Ltd. | Transportable wide swath trailing implement |
| WO2017009521A1 (en) * | 2015-07-10 | 2017-01-19 | Oy El-Ho Ab | Hydraulic solutions on a work machine |
| CN106416473A (en) * | 2016-11-02 | 2017-02-22 | 石河子大学 | Mulch raking and storing integrated operation machine |
| CN206078160U (en) * | 2016-08-30 | 2017-04-12 | 内蒙古蒙容肉业有限责任公司 | Efficient VHD shaping forage grass bundling machine |
| CN107020188A (en) * | 2017-04-25 | 2017-08-08 | 汪巧巧 | A kind of municipal construction road stone disintegrating apparatus |
| CN107710921A (en) * | 2017-11-07 | 2018-02-23 | 常州帝君金属构件厂 | A kind of corn stubble root soil separator |
| CN108144674A (en) * | 2017-12-26 | 2018-06-12 | 成都弘硅科技有限公司 | A kind of breaker of waste electrical and electronic equipment |
| CN207641617U (en) * | 2017-10-24 | 2018-07-24 | 商丘师范学院 | A kind of adjustable environment-friendly type building stone pulverizing device |
| CN108370667A (en) * | 2018-04-08 | 2018-08-07 | 黄文浩 | A kind of adjustable cage sand driving separator of intelligence |
| CN109757138A (en) * | 2019-03-27 | 2019-05-17 | 陈逸 | A kind of multi-functional soil shallow impurities remove device |
-
2019
- 2019-12-23 CN CN201911352050.5A patent/CN111052900B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4555897A (en) * | 1984-01-13 | 1985-12-03 | Degelman Industries Ltd. | Transportable wide swath trailing implement |
| WO2017009521A1 (en) * | 2015-07-10 | 2017-01-19 | Oy El-Ho Ab | Hydraulic solutions on a work machine |
| CN206078160U (en) * | 2016-08-30 | 2017-04-12 | 内蒙古蒙容肉业有限责任公司 | Efficient VHD shaping forage grass bundling machine |
| CN106416473A (en) * | 2016-11-02 | 2017-02-22 | 石河子大学 | Mulch raking and storing integrated operation machine |
| CN107020188A (en) * | 2017-04-25 | 2017-08-08 | 汪巧巧 | A kind of municipal construction road stone disintegrating apparatus |
| CN207641617U (en) * | 2017-10-24 | 2018-07-24 | 商丘师范学院 | A kind of adjustable environment-friendly type building stone pulverizing device |
| CN107710921A (en) * | 2017-11-07 | 2018-02-23 | 常州帝君金属构件厂 | A kind of corn stubble root soil separator |
| CN108144674A (en) * | 2017-12-26 | 2018-06-12 | 成都弘硅科技有限公司 | A kind of breaker of waste electrical and electronic equipment |
| CN108370667A (en) * | 2018-04-08 | 2018-08-07 | 黄文浩 | A kind of adjustable cage sand driving separator of intelligence |
| CN109757138A (en) * | 2019-03-27 | 2019-05-17 | 陈逸 | A kind of multi-functional soil shallow impurities remove device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112889364A (en) * | 2021-01-20 | 2021-06-04 | 海南龙宝农业设备有限公司 | Protector for agricultural machinery |
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| Publication number | Publication date |
|---|---|
| CN111052900B (en) | 2022-02-25 |
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