Hydraulic land leveling and scraping machine

Abstract

The utility model provides a hydraulic flat ground scraper which comprises a connecting frame and a scraper blade and further comprises a connector, a connecting arm, a first driving cylinder, a second driving cylinder and a third driving cylinder. The front end of the connector is rotatably mounted at the rear part of the connecting frame, and the first driving cylinder is used for driving the connector to rotate; the front end of the connecting arm is rotatably mounted at the rear end of the connector, and the second driving cylinder is used for driving the connecting arm to rotate; the scraping plate is rotatably mounted at the rear end of the connecting arm, and the third driving cylinder is used for driving the scraping plate to rotate. According to the scraper, the inclination angle and the rotation angle of the scraper blade in the horizontal direction can be controlled through the three oil cylinders, the adjusting stroke is large, leveling is convenient, and the leveling requirements of different grounds can be met.

Description

Technical Field

[0001] The utility model mainly relates to the technical field related to agricultural machinery, in particular to a hydraulic leveling and scraping machine. Background Art

[0002] Land scrapers are mainly used to level the ground during agricultural farming. They are mainly driven by a power machinery (such as a tractor) and level the ground through the scraper at the rear.

[0003] In the prior art, such as the related technology of an angle-adjustable farmland grader with publication number CN106489329A, the angle of the scraper can be adjusted by setting a rotating drum and a rotating drum sleeve, but it can only adjust the angle of the scraper in the circumferential direction and cannot adjust its inclination, and the manual method used for adjustment is extremely inflexible during actual operation.

[0004] In the prior art, such as the related technology of a rotatable grader with announcement number CN20448859U, a screw pair is used to adjust the rotation angle of the scraper plate, and the adjustment of the scraper inclination angle is achieved by setting different grooves. In its technical solution, manual adjustment is required, especially when adjusting the scraper inclination angle, a bolt fixing method is used, which is extremely laborious and has low practicality.

[0005] In summary, it is necessary to design a scraper with more flexible adjustment and more compact structure to facilitate land leveling during farming operations. Utility Model Content

[0006] In order to solve the deficiencies of current technology, the utility model combines the existing technology and, based on practical application, provides a hydraulic leveling scraper. The scraper can control the horizontal inclination angle and rotation angle of the scraper through three oil cylinders. It has a large adjustment stroke and is easy to level, and can adapt to the leveling needs of different grounds.

[0007] To achieve the above purpose, the technical solution of the utility model is as follows:

[0008] A hydraulic land scraper comprises a connecting frame, a scraper, a connecting head, a connecting arm, a first driving cylinder, a second driving cylinder and a third driving cylinder;

[0009] The front end of the connector is rotatably mounted on the rear part of the connecting frame, and the first driving cylinder is used to drive the connector to rotate;

[0010] The front end of the connecting arm is rotatably mounted on the rear end of the connecting head, and the second driving cylinder is used to drive the connecting arm to rotate;

[0011] The scraper is rotatably mounted on the rear end of the connecting arm, and the third driving cylinder is used to drive the scraper to rotate;

[0012] The rotation axis between the connecting head and the connecting frame is perpendicular to the rotation axis between the connecting arm and the connecting head, and the rotation axis between the connecting arm and the connecting head is parallel to the rotation axis between the scraper and the connecting arm.

[0013] Furthermore, one end of the first driving cylinder is hingedly connected to the connecting frame, and the other end is hingedly connected to the connecting head;

[0014] One end of the second driving cylinder is hingedly connected to the connecting head, and the other end is hingedly connected to the connecting arm;

[0015] One end of the third driving cylinder is hingedly connected to the connecting arm, and the other end is hingedly connected to the scraper.

[0016] Furthermore, an extension plate is provided on one side of the lower portion of the connecting head, and the first driving cylinder and the second driving cylinder are both hingedly connected to the extension plate.

[0017] Furthermore, the connecting frame is in a rectangular frame structure as a whole, the connecting head is arranged at the rear of the lower part of the connecting frame, the first connecting shaft is arranged at the front end of the connecting head, and the first connecting shaft passes through the connecting frame forward and then the first nut is installed.

[0018] Furthermore, a second connecting shaft is arranged at the middle upper part of the scraper, and a second nut is installed after the second connecting shaft passes through the connecting arm upward.

[0019] Furthermore, an upper fixed plate is arranged at the rear end of the connecting arm, a lower movable plate is arranged at the middle upper part of the scraper, and a plurality of positioning holes are arranged on the upper fixed plate and the lower movable plate along the circumferential direction.

[0020] Furthermore, a hinge shaft is arranged on the upper part of the scraper at one side of the lower movable plate, and the third driving cylinder is hingedly connected to the hinge shaft.

[0021] Furthermore, a reinforcing rib is provided on the scraper.

[0022] Furthermore, the first drive cylinder, the second drive cylinder and the third drive cylinder are all hydraulic cylinders.

[0023] Furthermore, the first drive cylinder, the second drive cylinder and the third drive cylinder are all equipped with a hydraulic valve group for locking the hydraulic cylinder and the flow rate.

[0024] Beneficial effects of the utility model:

[0025] 1. In the utility model, the inclination of the left and right sides of the scraper can be adjusted by the first driving cylinder, so the scraper can be easily leveled, and the horizontal inclination angle of the scraper can be easily adjusted to meet the needs of leveling the ground in different situations. The second driving cylinder and the third driving cylinder can adjust the swing angle (rotation angle) of the scraper in a wide range, which can be used to level uneven high ground, scrape ridges, level ditches, and form ridges, etc.

[0026] 2. In the present invention, the three driving cylinders all adopt the structure of oil cylinders, and cooperate with the hydraulic valve group to achieve accurate positioning of the scraper after adjustment.

[0027] 3. In the utility model, the connection frame, scraper, connection head, connection arm and each oil cylinder are reasonably arranged, the connection between them is simple and convenient, and the disassembly and assembly are quick and convenient, which is convenient for transportation after disassembly and assembly operation at the use site.

[0028] 4. In the utility model, the scraper structure is designed to be stable and reliable and not easy to deform. The scraper can be mechanically positioned by the upper fixed plate and the lower movable plate. In the event of a failure of the oil cylinder or other special circumstances, the scraper can also be quickly adjusted manually. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attached Figure 1 The overall structure of the scraper Figure 1 ;

[0030] Attached Figure 2 The overall structure of the scraper Figure 2 ;

[0031] Attached Figure 3 The overall structure of the scraper Figure 3 .

[0032] The numbers shown in the accompanying drawings are: 1, connecting frame; 2, connecting arm; 3, scraper; 4, upper fixed plate; 5, lower movable plate; 6, first connecting shaft; 7, first nut; 8, second connecting shaft; 9, second nut; 10, connecting head; 11, first driving cylinder; 12, second driving cylinder; 13, third driving cylinder; 14, hinge shaft; 15, reinforcing rib plate; 16, extension plate; 17, positioning hole. DETAILED DESCRIPTION

[0033] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0034] refer to Figure 1 , Figure 2 , Figure 3 The figure is a schematic diagram of the relevant structure of a hydraulic leveling scraper provided by an embodiment of the utility model.

[0035] The scraper mainly comprises a connecting frame 1 , a scraper 3 , a connecting head 10 , a connecting arm 2 , a first driving cylinder 11 , a second driving cylinder 12 and a third driving cylinder 13 .

[0036] The connecting frame 1 is used for connecting with the tractor, and a three-point connecting structure is arranged at the front of the connecting frame 1. The connecting frame 1 is a rectangular frame structure as a whole, and is welded from a plurality of rectangular tubes, and has a strong structure, and is stable and reliable.

[0037] The connector 10 is installed at the lower rear of the connecting frame 1. Specifically, a first connecting shaft 6 is arranged at the front end of the connector 10, and the first connecting shaft 6 passes through the connecting frame 1 forward and is screwed with a first nut 7. The first connecting shaft 6 can rotate relative to the connecting frame 1, so that the connector 10 as a whole can rotate relative to the connecting frame 1. The first nut 7 at the front end can limit the connector 10 to prevent it from falling off the connecting frame 1, and the threaded connection method can facilitate the disassembly and assembly of the connector 10.

[0038] The two ends of the first driving cylinder 11 for driving the connection head 10 to rotate are respectively connected to the connection frame 1 and the extension plate 16. The upper end of the first driving cylinder 11 is hingedly connected to the hinge seat arranged at the upper rear of the connection frame 1. An extension plate 16 is arranged on one side of the connection head 10, and the other end of the first driving cylinder 11 is hingedly connected to the hinge seat on the extension plate 16, so that the connection head 10 can be driven to rotate through the telescopic movement of the first driving cylinder 11, thereby driving the adjustment of the connection arm 2 and the scraper 3.

[0039] The connecting arm 2 is a long rectangular pipe structure as a whole, and its front end is rotatably connected to the rear of the connecting head 10 through a pin shaft, so that the swing adjustment of the connecting arm 2 can be realized, and the swing angle of the connecting arm 2 is adjusted by the second driving cylinder 12. One end of the second driving cylinder 12 is hingedly connected to the hinge seat on the extension plate 16, and the other end is hingedly connected to the hinge seat on one side of the connecting arm 2. The swing angle of the connecting arm 2 can be adjusted by the extension and retraction of the second driving cylinder 12.

[0040] The scraper 3 is rotatably mounted at the rear end of the connecting arm 2. The scraper 3 is an arc-shaped plate structure as a whole, with a lower movable plate 5 welded to the middle upper part thereof, and an upper fixed plate 4 welded to the lower end of the connecting arm 2. The lower movable plate 5 is connected to a second connecting shaft 8, and the second connecting shaft 8 passes upward through the upper fixed plate 4 and the connecting arm 2, and then a second nut 9 is screwed on. The second connecting shaft 8 is rotatable, thereby driving the scraper 3 to rotate. The second nut 9 can prevent the scraper 3 from falling off the connecting arm 2, and the disassembly and assembly are convenient and quick. At the same time, the design of the upper fixed plate 4 and the lower movable plate 5 can ensure the stability of the structure.

[0041] The rotation angle of the scraper 3 is controlled and adjusted by the third drive cylinder 13. Specifically, one end of the third drive cylinder 13 is hingedly connected to the hinge seat provided at the lower part of the connecting arm 2, and the other end is hingedly connected to the hinge shaft 14 on one side of the lower movable plate 5. The rotation angle of the scraper 3 is adjusted by the extension and contraction of the third drive cylinder 13.

[0042] In this embodiment, the left-right direction is the X-axis, the front-back direction is the Y-axis, and the up-down direction is the Z-axis. The rotation axis of the connector 10 is perpendicular to the XZ plane. The connector 10 can be used to quickly level the left and right ends of the scraper 3, and the left and right ends of the scraper 3 can also be adjusted to an inclined state to adapt to different terrain requirements. The rotation axis of the connecting arm 2 is parallel to the rotation axis of the scraper 3. The rotation of the connecting arm 2 and the scraper 3 can be coordinated to achieve a large angle adjustment of the scraper 3. The rotation axis of the connecting arm 2 and the scraper 3 is perpendicular to the XY plane. If the angle between the scraper 3 and the forward direction can be easily adjusted, the scraper 3 can achieve operations such as leveling the ground, ridge formation, scraping ridges and filling ditches.

[0043] In this embodiment, the first drive cylinder 11, the second drive cylinder 12 and the third drive cylinder 13 are all hydraulic cylinders, which can directly use the hydraulic configuration of the tractor, and the first drive cylinder 11, the second drive cylinder 12 and the third drive cylinder 13 are all configured with a hydraulic valve group for locking the hydraulic cylinder and adjusting the flow rate, so as to achieve the positioning maintenance of the hydraulic cylinder after adjustment.

[0044] As a preferred solution of this embodiment, a plurality of positioning holes 17 are provided on the upper fixed plate 4 and the lower movable plate 5 along the circumferential direction. Under certain circumstances, the angle of the scraper 3 can be adjusted by manually rotating the lower movable plate 5. After adjustment, the scraper 3 can be fixed by inserting the pin shaft into the positioning hole 17.

[0045] As a preferred solution of this embodiment, a reinforcing rib 15 is provided on the scraper 3 to ensure the strength of the scraper 3 during operation and to prevent it from being deformed.

Claims

1. A hydraulic land scraper, comprising a connecting frame and a scraper, characterized in that: It also includes a connecting head, a connecting arm, a first driving cylinder, a second driving cylinder and a third driving cylinder; The front end of the connector is rotatably mounted on the rear part of the connecting frame, and the first driving cylinder is used to drive the connector to rotate; The front end of the connecting arm is rotatably mounted on the rear end of the connecting head, and the second driving cylinder is used to drive the connecting arm to rotate; The scraper is rotatably mounted on the rear end of the connecting arm, and the third driving cylinder is used to drive the scraper to rotate; The rotation axis between the connecting head and the connecting frame is perpendicular to the rotation axis between the connecting arm and the connecting head, and the rotation axis between the connecting arm and the connecting head is parallel to the rotation axis between the scraper and the connecting arm.

2. The hydraulic land scraper according to claim 1, characterized in that: One end of the first driving cylinder is hingedly connected to the connecting frame, and the other end is hingedly connected to the connecting head; One end of the second driving cylinder is hingedly connected to the connecting head, and the other end is hingedly connected to the connecting arm; One end of the third driving cylinder is hingedly connected to the connecting arm, and the other end is hingedly connected to the scraper.

3. The hydraulic land scraper according to claim 2, characterized in that: An extension plate is arranged at one side of the lower part of the connecting head, and the first driving cylinder and the second driving cylinder are both hingedly connected to the extension plate.

4. The hydraulic land scraper according to claim 1, characterized in that: The connecting frame is in a rectangular frame structure as a whole. The connecting head is arranged at the rear of the lower part of the connecting frame. The first connecting shaft is arranged at the front end of the connecting head. The first connecting shaft passes through the connecting frame forward and then the first nut is installed.

5. The hydraulic land scraper according to claim 1, characterized in that: A second connecting shaft is arranged at the middle upper part of the scraper, and a second nut is installed after the second connecting shaft passes through the connecting arm upward.

6. The hydraulic land scraper according to claim 5, characterized in that: An upper fixed plate is arranged at the rear end of the connecting arm, a lower movable plate is arranged at the middle upper part of the scraper, and a plurality of positioning holes are arranged on the upper fixed plate and the lower movable plate along the circumferential direction.

7. The hydraulic land scraper according to claim 6, characterized in that: An articulated shaft is arranged on the upper part of the scraper and located on one side of the lower movable plate, and the third driving cylinder is hingedly connected to the articulated shaft.

8. The hydraulic land scraper according to claim 1, characterized in that: A reinforcing rib plate is arranged on the scraper.

9. The hydraulic land scraper according to any one of claims 1 to 8, characterized in that: The first drive cylinder, the second drive cylinder and the third drive cylinder are all hydraulic cylinders.

10. The hydraulic land scraper according to claim 9, characterized in that: The first drive cylinder, the second drive cylinder and the third drive cylinder are all equipped with a hydraulic valve group for locking the hydraulic cylinder and the flow rate.

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