A posture-adjustable land grader

Abstract

The present invention discloses an attitude-adjustable grader, which comprises a main traveling component, the main traveling component comprises a frame, a support bracket which can swing up and down is arranged at the rear of the frame, and the lower end of the support bracket is rotatably connected to two ground wheels; a leveling component, the leveling component comprises a leveling frame which can be raised and lowered and can swing left and right, and a guide frame fixed to the rear side of the frame, sliding grooves are arranged at both left and right ends of the guide frame, a sliding rod which corresponds to the sliding grooves in a one-to-one manner is connected to the rear side of the leveling frame, the sliding rod is slidably connected to the guide frame via the corresponding sliding grooves, a leveling plate is fixedly connected to the lower end of the leveling frame, a fixing frame which is spaced apart in the left and right directions is fixedly connected to the rear side of the leveling frame, and the support bracket is hinged between the two fixing frames; the present invention can realize both the adjustment of the inclination of the leveling plate and the adjustment of the height of the leveling plate.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a posture-adjustable land leveler. Background Art

[0002] The main purpose of land leveling is to facilitate farming, sowing, irrigation, drainage, fertilization, spraying and harvesting. A field with high flatness can not only save water during irrigation, but also avoid uneven growth of crops, and is also conducive to farming such as transplanting. In the prior art, a laser-controlled paddy field leveling machine is disclosed, with the announcement number CN109479409. B, the announcement date is 2021.11.12, which includes a frame, two support beams and a cross beam are arranged on the front side of the frame, the support beam is connected to a connecting rod, the connecting rod is connected to a synchronous motion frame, the lower end of the synchronous motion frame is connected to a first lifting hydraulic cylinder, the lower end of the first lifting hydraulic cylinder is fixedly connected to a smoothing plate, and the cross beam is fixedly connected to a first support rod on the front side of the synchronous motion frame, the first support rod is hinged with a second lifting hydraulic cylinder, and the end of the second lifting hydraulic cylinder away from the support rod is hinged to the smoothing plate. During operation, the first lifting hydraulic cylinder and the second lifting hydraulic cylinder are controlled to extend or shorten so that the smoothing plate always remains on the original working plane for leveling operations and is not affected by height changes in the walking direction of the ground. During driving, the frame is prone to tilt when turning, and the smoothing plate cannot remain level relative to the ground. However, this technology cannot adjust the inclination of the smoothing plate, and cannot ensure that the smoothing plate can always stick to the ground during leveling operations, affecting the final leveling effect. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above-mentioned and / or existing problems in the existing leveling operations, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a posture-adjustable motor grader, which can adjust the inclination and height of the leveling plate, so that the bottom of the leveling plate can be attached to the ground for leveling operations, thereby improving the leveling effect.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a posture-adjustable grader, comprising:

[0007] A traveling main body assembly, the traveling main body assembly comprises a frame, a supporting bracket capable of swinging up and down is provided at the rear of the frame, and the lower end of the supporting bracket is rotatably connected to two ground wheels;

[0008] A leveling assembly, the leveling assembly includes a leveling frame that can be raised and lowered and swung left and right, and a guide frame fixed to the rear side of the frame, sliding grooves are provided at both ends of the left and right sides of the guide frame, the rear side of the leveling frame is connected with sliding rods corresponding to the sliding grooves one by one, the sliding rods are slidably connected to the guide frame through the corresponding sliding grooves, the lower end of the leveling frame is fixedly connected with a leveling plate, the rear side of the leveling frame is fixedly connected with fixed frames arranged at intervals in the left and right directions, and the supporting bracket is hinged between the two fixed frames.

[0009] In order to realize the lifting and lowering of the leveling frame, a support plate is connected above the frame, and a transmission screw is rotatably connected to the support plate. The two ends of the center of the transmission screw are respectively threadedly connected with a first lifting transmission block and a second lifting transmission block slidably connected to the support plate in the outward direction. The first lifting transmission block and the second lifting transmission block move towards or away from each other. The first lifting transmission block and the second lifting transmission block extend downwardly from the support plate. The left and right sides of the end where the first lifting transmission block and the second lifting transmission block are respectively connected are connected. The first lifting transmission module is at the left end of the second lifting transmission module, and the lower ends of the first lifting transmission module and the second lifting module are both connected to the upper end of the leveling frame.

[0010] In order to further realize the lifting and lowering of the leveling frame, the first lifting transmission module includes a first crank hinged at the lower end of the support plate, the end of the first crank away from the support plate extends downward toward the center of the support plate, the front and rear sides of the first lifting transmission block are hinged with first rockers, the lower ends of the two first rockers are hinged to the upper end of the leveling frame, and the lower end of the first crank is hinged between the two first rockers; the second lifting transmission module includes a second crank hinged at the lower end of the support plate, the end of the second crank away from the support plate extends downward toward the center of the support plate, the front and rear sides of the second lifting transmission block are hinged with second rockers, the lower ends of the two second rockers are movably connected to the upper end of the leveling frame, and the lower end of the second crank is hinged between the two second rockers.

[0011] As a preferred solution of the posture-adjustable grader of the present invention, the support plate is slidably connected above the frame, and when the support plate slides, the leveling frame swings left and right, and the support bracket swings left and right synchronously.

[0012] In order to further adjust the inclination of the leveling frame, a connecting bracket is fixedly connected to the upper side of the frame, and at least one fixed seat is fixedly connected to the connecting bracket. A telescopic rod is connected to the rear of the fixed seat, and a movable rod is connected to the rear end of the telescopic rod. Movable grooves are opened on the left and right ends of the supporting bracket, and the movable rod is movably connected to the supporting bracket through two movable grooves.

[0013] As a preferred solution of the posture-adjustable grader of the present invention, the frame is fixedly connected to a lower linear driver, the lower linear driver is connected to a driving rod capable of reciprocating linear motion along the length direction of the frame, and the outer end of the driving rod is fixedly connected to the support plate.

[0014] In order to further achieve height adjustment of the ground wheel, an upper linear driver is fixedly connected to the fixed seat, and the telescopic rod is connected to the upper linear driver. The telescopic rod can perform reciprocating linear motion in the front-rear direction.

[0015] As a preferred solution of the posture-adjustable motor grader of the present invention, a driving member capable of driving the transmission screw to rotate is fixedly connected to the upper side of the support plate.

[0016] Compared with the prior art, the present invention has the following technical effects: through the joint arrangement of a transmission screw, a lifting transmission module, a support frame, a telescopic rod for reciprocating linear motion and a lifting transmission module, synchronous height adjustment of the leveling plate and the ground wheel is achieved to adapt to changes in the height of the terrain; through the arrangement of a movable support plate and a lifting transmission module, the inclination of the leveling frame is adjusted, so that the leveling plate can always remain level relative to the reference plane during the operation, further improving the leveling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a front view of the present invention and the walking device connected together.

[0019] Figure 2 The three-dimensional structure of the present invention Figure 1 .

[0020] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0021] Figure 4 The three-dimensional structure of the present invention Figure 2 .

[0022] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0023] Figure 6 The three-dimensional structure of the present invention Figure 3 .

[0024] Figure 7 for Figure 6 A partial enlarged view of point C in the middle.

[0025] Figure 8 It is a three-dimensional structural diagram of the present invention and the walking device connected together.

[0026] Fig. 9 for Figure 8 A partial enlarged view of point D in the middle.

[0027] In the figure, 100 is a leveling assembly, 101 is a leveling plate, 102 is a leveling frame, 103 is a supporting plate, 103a is a connecting plate, 104 is a driving member, 105 is a first lifting transmission block, 106 is a driving screw, 107 is a second lifting transmission block, 108 is a fixed seat, 109 is an upper linear drive, 110 is a driving rod, 111 is a guide rail, 112 is a first lifting transmission module, 112a is a first crank, 112b is a first rocker, 113 is a second lifting transmission module, 1 13a second crank, 113b second rocker, 114 lower linear drive, 115 fixed frame, 116 slide rail, 117 guide frame, 118 sliding rod, 119 telescopic rod, 120 intermediate block, 121 movable rod, 200 walking device, 300 main traveling component, 301 frame, 301a connecting bracket, 302 supporting bracket, 302a guide part, 303 ground wheel, a sliding opening, b mounting hole, c movable groove, d sliding groove. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1 to Figure 5 , which is the first embodiment of the present invention, provides a posture-adjustable grader, which can achieve synchronous height adjustment of the leveling plate 101 and the ground wheel 303 to adapt to changes in terrain height.

[0033] A posture-adjustable grader includes a main traveling component 300, which includes a frame 301. A support bracket 302 capable of swinging up and down is provided at the rear of the frame 301. The lower end of the support bracket 302 is rotatably connected to two ground wheels 303. A leveling component 100 for leveling a field is connected to the frame 301.

[0034] Specifically, the leveling assembly 100 includes a leveling frame 102 that can be raised and lowered and swung left and right, and a guide frame 117 fixed to the rear side of the frame 301. The left and right ends of the guide frame 117 are provided with sliding grooves d. The rear side of the leveling frame 102 is connected to a sliding rod 118 that corresponds to the sliding groove d one by one. The sliding rod 118 is slidably connected to the guide frame 117 through the corresponding sliding groove d. The lower end of the leveling frame 102 is fixedly connected to the leveling plate 101. The rear side of the leveling frame 102 is fixedly connected to fixed frames 115 that are spaced apart in the left and right directions. The support bracket 302 is hinged between the two fixed frames 115.

[0035] Specifically, the leveling assembly 100 also includes a leveling frame 102 that can be raised and lowered and a guide frame 117 fixed to the rear side of the frame 301. The left and right ends of the guide frame 117 are provided with sliding grooves d. The rear side of the leveling frame 102 is connected with a sliding rod 118 that corresponds to the sliding grooves d one by one. The sliding rod 118 is slidably connected to the guide frame 117 through the corresponding sliding grooves d. The lower end of the leveling frame 102 is fixedly connected with the leveling plate 101. The structure for realizing the lifting of the leveling frame 102 is specifically as follows: a support plate 103 is connected above the frame 301, a driving screw 106 is rotatably connected to the support plate 103, and the upper side of the support plate 103 is connected to the support plate 103. A driving member 104 is fixedly connected to the support plate 103 and can drive the transmission screw 106 to rotate. In this embodiment, the driving member 104 is preferably a hydraulic motor, and the output end of the hydraulic motor is connected to the transmission screw 106. The first lifting transmission block 105 and the second lifting transmission block 107 are respectively threadedly connected in the outward direction at both ends of the center of the transmission screw 106. At least one guide rail 111 is fixedly connected to the upper side of the support plate 103. In this embodiment, two guide rails 111 are provided. The first lifting transmission block 105 and the second lifting transmission block 107 are both slidably connected to the guide rail 111. The spiral directions of the two ends of the transmission screw 106 are opposite. The lowering transmission block 105 and the second lifting transmission block 107 move toward or away from each other. The first lifting transmission block 105 and the second lifting transmission block 107 extend downwardly from the support plate 103. The left and right sides of the end where the first lifting transmission block 105 and the second lifting transmission block 107 are respectively connected to the first lifting transmission module 112 and the second lifting transmission module 113. The first lifting transmission module 112 includes a first crank 112a hinged at the lower end of the support plate 103. The end of the first crank 112a away from the support plate 103 extends downward toward the center of the support plate 103. The front and rear sides of the first lifting transmission block 105 are both hinged with a first rocker 112b. The two first rockers The lower ends of 112b are hinged to the upper end of the leveling frame 102, and the lower end of the first crank 112a is hinged between the two first rockers 112b; the second lifting transmission module 113 includes a second crank 113a hinged at the lower end of the support plate 103, and the end of the second crank 113a away from the support plate 103 extends downward toward the center of the support plate 103, and the front and rear sides of the second lifting transmission block 107 are hinged with second rockers 113b, and the lower ends of the two second rockers 113b are movably connected to the upper end of the leveling frame 102, and the lower end of the second crank 113a is hinged between the two second rockers 113b.

[0036] During implementation, the front side of the frame 301 is hinged to the rear end of the frame of the walking device 200, and the bottom edge of the ground wheel 303 is in contact with the ground. In this embodiment, the walking device 200 is preferably a tractor. During the leveling operation, when the height of the leveling plate 101 needs to be adjusted, the working process is described by taking the lifting of the leveling plate 101 as an example. The driving member 104 is actuated, the transmission screw 106 rotates, and the transmission screw 106 drives the first lifting transmission block 105 and the second lifting transmission block 107 to move, and the movement direction of the driving member 104 is controlled to make the first lifting transmission block 105 and the second lifting transmission block 107 move toward each other. The block 105 pulls the first rocker 112b to swing upward, and the second lifting transmission block 107 pulls the second rocker 113b to swing upward. Under the action of the first rocker 112b and the second rocker 113b, the leveling frame 102 moves up. When the leveling plate 101 moves up to the required height, that is, when the leveling plate 101 is in contact with the ground, the driving member 104 is controlled to stop moving; when it is necessary to lower the leveling plate 101, the driving member 104 is controlled to move in the opposite direction, that is, the first lifting transmission block 105 and the second lifting transmission block 107 move in opposite directions, and the specific transmission process is no longer repeated; thereby realizing the height adjustment of the leveling plate 101.

[0037] In order to further realize the height adjustment of the ground wheel 303, the frame 301 is connected with an upper linear driver 109, and the upper linear driver 109 is preferably a hydraulic cylinder. The telescopic rod 119 is connected to the upper linear driver 109, and the telescopic rod 119 can perform reciprocating linear motion in the front and rear directions; the rear end of the telescopic rod 119 is fixedly connected with a connecting block 120, and the connecting block 120 is fixedly connected with a movable rod 121, and the left and right sides of the front end of the support bracket 302 are fixed with guide parts 302a, and the guide part 302a is provided with a movable groove c, and the movable rod 121 is movably connected to the support bracket 302 through the two movable grooves c.

[0038] When adjusting the height of the leveling plate 101, it is necessary to adjust the height of the ground wheel 303 synchronously. Taking the working process of lifting the leveling plate 101 and the ground wheel 303 as an example, when the leveling frame 102 moves up, the leveling frame 102 drives the support bracket 302 to move up through the fixed frame 115, controls the upper linear drive 109 to move, makes the telescopic rod 119 retract forward, and the support bracket 302 slides along the movable rod 121 through the movable groove c, and the support bracket 302 moves up, that is, the ground wheel 303 moves up, so as to realize the synchronous upward movement of the leveling frame 102 and the ground wheel 303; when it is necessary to move the ground wheel 303 downward, the upper linear drive 109 is controlled to move in the reverse direction. action, even if the telescopic rod 119 is extended backward, which will not be repeated here; thereby realizing the synchronous lifting and lowering of the leveling frame 102 and the ground wheel 303 to adapt to the height change of the terrain; in addition, when not working in the field, the driving member 104 does not move, and the upper linear driver 109 is controlled to move, so that the telescopic rod 119 is extended backward, and the telescopic rod 119 pushes the supporting bracket 302 to swing downward through the movable rod 121, and the supporting bracket 302 pushes the leveling frame 102 to swing upward through the fixed frame 115, so that the leveling plate 101 leaves the ground at an appropriate height, the upper linear driver 109 stops moving, and the ground wheel 303 rolls along the ground, so as to realize normal driving when not working.

[0039] Example 2

[0040] Reference Figure 5 to Figure 7 , which is the second embodiment of the present invention, provides a posture-adjustable grader, which can adjust the horizontality of the leveling plate 101.

[0041] Specifically, the support plate 103 is slidably connected to the top of the frame 301, and two slide rails 116 arranged at intervals in the front-to-back direction are fixed on the upper side of the frame 301, and a plurality of sliding blocks slidably connected to the corresponding slide rails 116 are fixedly connected to the lower side of the support plate 103. When the support plate 103 slides, the leveling frame 102 swings left and right, and the support bracket 302 swings left and right synchronously. A rack is fixedly connected to the front side of the upper part of the leveling frame 102, and a connecting bracket 301a is fixedly connected to the upper side of the frame 301. At least one fixed seat 108 is fixedly connected to the connecting bracket 301a. In this embodiment, two fixed seats 108 are fixedly connected to the connecting bracket 301a, and a telescopic rod 119 is connected to the rear of the fixed seat 108.

[0042] The support plate 103 is made to slide, and under the action of the first lifting transmission module 112 and the second lifting transmission module 113, the leveling frame 102 swings left and right; for example, from the perspective of the main view perpendicular to the paper surface, when the support plate 103 slides to the left, the first crank 112a pushes the first rocker 112b to swing down, and the second crank 113a pulls the second rocker 113b to swing up, the first rocker 112b pushes the left end of the leveling frame 102 to swing down, and the second rocker 113b pulls the right end of the leveling frame 102 to swing up, and when the support plate 103 swings to the left to a suitable angle, that is, the leveling plate 101 is kept parallel to the reference plane, the support plate 103 is controlled to stop sliding, thereby realizing the adjustment of the horizontality of the leveling plate 101.

[0043] In order to further adjust the horizontal degree of the leveling frame 102, a lower linear drive 114 is fixedly connected to the frame 301, and the lower linear drive 114 is preferably a hydraulic cylinder. The lower linear drive 114 in this embodiment is fixedly connected near the right end of the frame 301, and the second lifting transmission block 107 is provided with a mounting hole b for the lower linear drive 114 to pass through. The lower linear drive 114 is connected to a driving rod 110 that can perform reciprocating linear motion along the length direction of the frame 301. A sliding opening a is provided on the support plate 103. The lower ends of the first lifting transmission block 105 and the second lifting transmission block 107 extend out from the bottom of the support plate 103 through the sliding opening a. A connecting plate 103a is fixed at the sliding opening a of the support plate 103, and the end of the driving rod 110 away from the lower linear drive 114 is fixedly connected to the connecting plate 103a.

[0044] When the support plate 103 needs to slide to the left, the lower linear driver 114 is controlled to move so that the drive rod 110 is continuously extended to the left, and the drive rod 110 drives the support plate 103 to slide to the left. When the support plate 103 moves to the required position, the lower linear driver 114 stops moving.

[0045] The present invention realizes the adjustment of the inclination of the leveling frame 102 by jointly setting the movable support plate 103, the first lifting transmission module 112 and the second lifting transmission module 113, so that the leveling plate 101 can remain horizontal relative to the reference surface during operation, further improving the leveling effect.

[0046] It should be noted that the front mentioned in this application is the same as the driving direction of the walking device, and the rear is opposite to the front. As shown in the main view, the direction perpendicular to the paper plane is the front, and the direction perpendicular to the front and rear directions and horizontal is the left and right direction.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A posture-adjustable motor grader, characterized in that: Also includes; A traveling main body assembly (300), the traveling main body assembly (300) comprising a frame (301), a support bracket (302) capable of swinging up and down is provided at the rear of the frame (301), and the lower end of the support bracket (302) is rotatably connected to two ground wheels (303); A leveling assembly (100), the leveling assembly (100) comprising a leveling frame (102) which can be raised and lowered and can swing left and right, and a guide frame (117) fixed to the rear side of a frame (301), the left and right ends of the guide frame (117) are both provided with sliding grooves (d), the rear side of the leveling frame (102) is connected with a sliding rod (118) which corresponds to the sliding groove (d) in a one-to-one manner, the sliding rod (118) is slidably connected to the guide frame (117) via the corresponding sliding groove (d), the lower end of the leveling frame (102) is fixedly connected with a leveling plate (101), the rear side of the leveling frame (102) is fixedly connected with a fixing frame (115) which is spaced apart in the left and right directions, The support bracket (302) is hinged between two fixed frames (115); a support plate (103) is connected above the frame (301); a transmission screw (106) is rotatably connected to the support plate (103); a first lifting transmission block (105) and a second lifting transmission block (107) which are slidably connected to the support plate (103) are respectively threadedly connected in the outward direction at both ends of the center of the transmission screw (106); the first lifting transmission block (105) and the second lifting transmission block (107) move toward or away from each other; the first lifting transmission block (105) and the second lifting transmission block (107) extend downward from the end below the support plate (103). The left and right sides are respectively connected with a first lifting transmission module (112) and a second lifting transmission module (113); the lower ends of the first lifting transmission module (112) and the second lifting transmission module are both connected to the upper end of the leveling frame (102); the first lifting transmission module (112) comprises a first crank (112a) hinged at the lower end of the support plate (103); one end of the first crank (112a) away from the support plate (103) extends downward toward the center of the support plate (103); the front and rear sides of the first lifting transmission block (105) are both hinged with first rockers (112b); the lower ends of the two first rockers (112b) are both hinged to the leveling frame (102); ), the lower end of the first crank (112a) is hinged between the two first rocking arms (112b); the second lifting transmission module (113) comprises a second crank (113a) hinged at the lower end of the support plate (103), one end of the second crank (113a) away from the support plate (103) extends downward in the direction of the center of the support plate (103), the front and rear sides of the second lifting transmission block (107) are hinged with second rocking arms (113b), the lower ends of the two second rocking arms (113b) are movably connected to the upper end of the leveling frame (102), and the lower end of the second crank (113a) is hinged between the two second rocking arms (113b).

2. The attitude-adjustable motor grader according to claim 1, characterized in that: The support plate (103) is slidably connected above the frame (301). When the support plate (103) slides, the leveling frame (102) swings left and right, and the support bracket (302) swings left and right synchronously.

3. The attitude-adjustable motor grader according to claim 2, characterized in that: A connecting bracket (301a) is fixedly connected to the upper side of the frame (301), and at least one fixing seat (108) is fixedly connected to the connecting bracket (301a). A telescopic rod (119) is connected to the rear of the fixing seat (108), and a movable rod (121) is connected to the rear end of the telescopic rod (119). Movable grooves (c) are formed at the left and right ends of the supporting bracket (302), and the movable rod (121) is movably connected to the supporting bracket (302) via the two movable grooves (c).

4. The attitude-adjustable motor grader according to claim 3, characterized in that: The frame (301) is fixedly connected to a lower linear driver (114), and the lower linear driver (114) is connected to a driving rod (110) capable of reciprocating linear motion along the length direction of the frame (301), and the outer end of the driving rod (110) is fixedly connected to the support plate (103).

5. The attitude-adjustable motor grader according to claim 3, characterized in that: An upper linear driver (109) is fixedly connected to the fixed seat (108), and the telescopic rod (119) is connected to the upper linear driver (109). The telescopic rod (119) can perform reciprocating linear motion in the front-rear direction.

6. The attitude-adjustable motor grader according to any one of claims 1 to 5, characterized in that: A driving member (104) capable of driving the transmission screw (106) to rotate is fixedly connected to the upper side of the support plate (103).

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