Tractor stubble cleaning harrow with efficient leveling device

Abstract

The utility model provides a stubble cleaning harrow with an efficient leveling device for a tractor, which comprises a stubble cleaning harrow frame, and a front harrow group and a rear harrow group are arranged at the bottom of the stubble cleaning harrow frame; a connecting rod is rotationally arranged on one side of the top of the stubble cleaning harrow frame, a leveling oil cylinder is arranged on the side, away from the stubble cleaning harrow frame, of the connecting rod, a traction longitudinal beam connected with a tractor is rotationally arranged on a telescopic shaft of the leveling oil cylinder, and a wheel frame lifting supporting arm is rotationally arranged on the side, away from the traction longitudinal beam, of the stubble cleaning harrow frame. Transportation tires are arranged on the wheel frame rising and falling supporting arms, a lifting oil cylinder arranged above the wheel frame rising and falling supporting arms is rotationally arranged on the side, away from the traction longitudinal beam, of the stubble cleaning harrow frame, and a telescopic shaft of the lifting oil cylinder is rotationally connected with the wheel frame rising and falling supporting arms. An oil supply assembly used for driving the leveling oil cylinder and the lifting oil cylinder to stretch out and draw back at the same time so as to adjust the stubble cleaning harrow frame to keep horizontal is arranged between the stubble cleaning harrow frame and the tractor. The stubble cleaning machine is reasonable in structure, convenient to level, high in leveling speed and high in leveling efficiency.

Description

Technical Field

[0001] The utility model relates to a stubble harrow, in particular to a tractor-used stubble harrow with a high-efficiency leveling device. Background Art

[0002] At present, the stubble harrow is a tillage machine pulled by a tractor and used to break up the soil in farmland.

[0003] In the prior art, when the stubble rake is working and transporting, the lifting cylinder of the transport tire and the leveling cylinder at the traction point are controlled separately by two oil circuits. When the tire is raised and lowered to adjust the lifting cylinder, the traction point where the tractor and the traction head are connected is fixed, which will cause the rake frame to be unbalanced as a whole. At this time, the leveling cylinder must be adjusted again to make the rake frame cooperate with it to keep it in a horizontal state as a whole and maintain balance. The operation is cumbersome, the leveling efficiency is low, and it is not convenient to perform the leveling operation on the stubble rake. Moreover, this oil circuit method not only occupies two more sets of tractor hydraulic systems, but also has a slow leveling speed and low efficiency. Now there is an urgent need for a tractor stubble rake with an efficient leveling device to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a tractor-use stubble harrow with an efficient leveling device to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure, convenient leveling, fast leveling speed and high leveling efficiency.

[0005] In order to achieve the above object, the utility model is realized through the following technical scheme: a tractor stubble harrow with a high-efficiency leveling device, comprising:

[0006] A stubble harrow frame, the bottom of which is provided with a front harrow group and a rear harrow group;

[0007] A connecting rod is rotatably provided on one side of the top of the stubble rake frame, and a leveling cylinder is provided on the side of the connecting rod away from the stubble rake frame. A traction longitudinal beam connected to the tractor is rotatably provided on the telescopic shaft of the leveling cylinder. A wheel frame landing arm is rotatably provided on the side of the stubble rake frame away from the traction longitudinal beam, and a transport tire is provided on the wheel frame landing arm. A lifting cylinder arranged above the wheel frame landing arm is rotatably provided on the side of the stubble rake frame away from the traction longitudinal beam, and the telescopic shaft of the lifting cylinder is rotatably connected to the wheel frame landing arm, and an oil supply component for driving the leveling cylinder and the lifting cylinder to simultaneously extend and retract so as to adjust the stubble rake frame to remain horizontal is provided between the stubble rake frame and the tractor.

[0008] Further, the oil supply assembly includes a pair of branch oil inlet pipes arranged at the inlet end of the leveling oil cylinder and the inlet end of the lifting oil cylinder, a first oil circuit distributor is arranged on the pair of branch oil inlet pipes, a pair of branch oil outlet pipes are arranged at the outlet end of the leveling oil cylinder and the outlet end of the lifting oil cylinder, a second oil circuit distributor is arranged on the pair of branch oil outlet pipes, a main oil inlet pipe is arranged on the first oil circuit distributor, a main oil outlet pipe is arranged on the second oil circuit distributor, and the main oil inlet pipe and the main oil outlet pipe are respectively connected to the hydraulic station on the tractor;

[0009] The hydraulic station includes an oil tank arranged on the tractor, a motor oil pump is arranged on the oil tank through a pipeline, a solenoid valve is arranged on the motor oil pump through a pipeline, one end of the solenoid valve is connected to the main oil inlet pipe, the other end of the solenoid valve is connected to the main oil outlet pipe, and the solenoid valve is connected to the oil tank through a pipeline.

[0010] Furthermore, the wheel frame lifting and lowering arm, the lifting cylinder, and the connecting rod are respectively rotatably connected to the stubble rake frame through a pin shaft, and the telescopic shaft of the lifting cylinder and the wheel frame lifting and lowering arm, and the telescopic shaft of the leveling cylinder and the traction longitudinal beam are rotatably connected through a pin shaft.

[0011] Furthermore, a depth-limiting cylinder placed below the connecting rod is rotatably provided on one side of the stubble rake frame close to the traction longitudinal beam, a mounting frame is rotatably provided on the telescopic shaft of the depth-limiting cylinder, a depth-limiting wheel is provided inside the mounting frame, and the mounting frame is rotatably connected to the stubble rake frame.

[0012] Furthermore, the depth limiting oil cylinder and the mounting frame are rotatably connected to the stubble rake frame respectively through a pin shaft, and the telescopic shaft of the depth limiting oil cylinder is rotatably connected to the mounting frame through a pin shaft.

[0013] Furthermore, a fixing frame is arranged on the stubble harrow frame, and a soil crushing roller arranged between the front harrow group and the transport tire is arranged on the fixing frame.

[0014] Furthermore, the first oil circuit distributor and the second oil circuit distributor have the same specifications, and a three-way groove is provided inside the first oil circuit distributor.

[0015] According to the utility model, a tractor-use stubble harrow with an efficient leveling device supplies hydraulic oil to the leveling oil cylinder and the lifting oil cylinder at the same time by using an oil supply assembly, so that the leveling oil cylinder and the lifting oil cylinder are extended and retracted at the same time, so that the stubble harrow frame is adjusted and kept horizontal under the action of the transport tire and the traction longitudinal beam connected to the tractor as the support point, the operation is simple, the leveling efficiency is high, and the stubble harrow frame is easy to level.

[0016] By operating the motor oil pump in the hydraulic station, the hydraulic oil in the oil tank is delivered to the solenoid valve. Under the action of the solenoid valve, the hydraulic oil is delivered to the first oil circuit distributor through the branch oil inlet pipe and enters the inlet end of the leveling cylinder and the inlet end of the lifting cylinder, thereby driving the leveling cylinder and the lifting cylinder to extend at the same time. The hydraulic oil flows out from the outlet end of the leveling cylinder and the outlet end of the lifting cylinder through the branch oil outlet pipe to the inside of the second oil circuit distributor, and then flows back to the oil tank through the solenoid valve. When it is necessary to shorten the leveling cylinder and the lifting cylinder at the same time, the hydraulic oil is delivered to the second oil circuit distributor through the solenoid valve and flows through the inside of the leveling cylinder and the lifting cylinder to drive them to shorten at the same time. The hydraulic oil flows back to the first oil circuit distributor and flows back to the oil tank through the solenoid valve, thereby realizing the simultaneous extension and retraction of the leveling cylinder and the lifting cylinder, thereby accelerating the leveling speed of the stubble rake frame and achieving high leveling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 This is a schematic structural diagram of a tractor stubble rake with a high-efficiency leveling device according to an embodiment of the utility model;

[0019] Figure 2 This is a structural schematic diagram of a first oil circuit distributor in a tractor stubble harrow with a high-efficiency leveling device according to an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of an oil supply assembly in a tractor stubble rake with a high-efficiency leveling device according to an embodiment of the utility model;

[0021] In the figure: 1. stubble harrow frame; 101. rear harrow group; 102. front harrow group; 2. connecting rod; 3. leveling cylinder; 4. branch oil inlet pipe; 5. first oil circuit distributor; 51. three-way groove; 6. second oil circuit distributor; 7. main oil inlet pipe; 71. main oil outlet pipe; 8. tractor; 9. traction longitudinal beam; 10. branch oil outlet pipe; 11. depth-limiting cylinder; 12. mounting frame; 121. depth-limiting wheel; 13. fixing frame; 14. soil-suppressing roller; 15. wheel frame lifting and lowering support arm; 16. transport tire; 17. lifting cylinder; 18. hydraulic station; 181. solenoid valve; 182. motor oil pump; 183. oil tank. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1As shown, the utility model provides a technical solution: a tractor stubble harrow with a high-efficiency leveling device, comprising:

[0024] The stubble harrow frame 1 has a front harrow group 102 and a rear harrow group 101 at the bottom thereof;

[0025] A connecting rod 2 is rotatably provided on one side of the top of the stubble rake frame 1, a leveling cylinder 3 is provided on the side of the connecting rod 2 away from the stubble rake frame 1, a traction longitudinal beam 9 connected to the tractor 8 is rotatably provided on the telescopic shaft of the leveling cylinder 3, a wheel frame landing arm 15 is rotatably provided on the side of the stubble rake frame 1 away from the traction longitudinal beam 9, a transport tire 16 is provided on the wheel frame landing arm 15, a lifting cylinder 17 placed above the wheel frame landing arm 15 is rotatably provided on the side of the stubble rake frame 1 away from the traction longitudinal beam 9, and a rotatable connection is provided between the telescopic shaft of the lifting cylinder 17 and the wheel frame landing arm 15. Then, an oil supply assembly for driving the leveling cylinder 3 and the lifting cylinder 17 to extend and retract simultaneously so as to adjust the stubble rake 1 to maintain its level is provided between the stubble rake frame 1 and the tractor 8. The design uses the oil supply assembly to supply hydraulic oil to the leveling cylinder 3 and the lifting cylinder 17 at the same time, so that the leveling cylinder 3 and the lifting cylinder 17 can be extended and retracted at the same time, so that the stubble rake frame 1 is adjusted and maintained horizontally under the action of the transport tire 16 and the traction longitudinal beam 9 connected to the tractor 8 as the support points. The operation is simple and the leveling efficiency is high, which facilitates the leveling of the stubble rake frame 1.

[0026] Reference Figure 2 and Figure 3The oil supply assembly includes a pair of branch oil inlet pipes 4 arranged at the inlet end of the leveling oil cylinder 3 and the inlet end of the lifting oil cylinder 17, a first oil circuit distributor 5 is arranged on the pair of branch oil inlet pipes 4, a pair of branch oil outlet pipes 10 are arranged at the outlet end of the leveling oil cylinder 3 and the outlet end of the lifting oil cylinder 17, a second oil circuit distributor 6 is arranged on the pair of branch oil outlet pipes 10, a main oil inlet pipe 7 is arranged on the first oil circuit distributor 5, a main oil outlet pipe 71 is arranged on the second oil circuit distributor 6, and the main oil inlet pipe 7 and the main oil outlet pipe 71 are respectively connected to the hydraulic station 1 on the tractor 8 8 is connected; the hydraulic station 18 includes an oil tank 183 arranged on the tractor 8, and a motor oil pump 182 is arranged on the oil tank 183 through a pipeline, and a solenoid valve 181 is arranged on the motor oil pump 182 through a pipeline, one end of the solenoid valve 181 is connected to the main oil inlet pipe 7, and the other end of the solenoid valve 181 is connected to the main oil outlet pipe 71, and the solenoid valve 181 is connected to the oil tank 183 through a pipeline. This design enables the motor oil pump 182 in the hydraulic station 18 to work to deliver the hydraulic oil inside the oil tank 183 to the inside of the solenoid valve 181. Under the action of the solenoid valve 181, the hydraulic oil is delivered to the first oil circuit distributor 5 through the branch oil inlet pipe 4 into the inlet end of the leveling cylinder 3 and the inlet end of the lifting cylinder 17, thereby driving the leveling cylinder 3 and the lifting cylinder 17 to extend at the same time. The hydraulic oil flows out from the outlet end of the leveling cylinder 3 and the outlet end of the lifting cylinder 17 through the branch oil outlet pipe 10 to the inside of the second oil circuit distributor 6, and then flows back to the inside of the oil tank 183 through the solenoid valve 181. When it is necessary to shorten the leveling cylinder 3 and the lifting cylinder 17 at the same time, the solenoid valve 1 is used in the same way. 81 transports hydraulic oil to the second oil circuit distributor 6 and flows through the leveling cylinder 3 and the lifting cylinder 17 to drive them to shorten at the same time, and the hydraulic oil returns to the first oil circuit distributor 5 and returns to the oil tank 183 through the solenoid valve 181, so that the leveling cylinder 3 and the lifting cylinder 17 can be extended and retracted at the same time, thereby accelerating the leveling speed of the stubble harrow frame 1, with high leveling efficiency, and only one set of hydraulic system of the tractor 8 is needed, and the front harrow group 102 and the rear harrow group 101 can be lifted and lowered at the same time to avoid the phenomenon of asynchrony.

[0027] Reference Figure 1The wheel frame lifting and lowering support arm 15, the lifting cylinder 17, and the connecting rod 2 are rotatably connected to the stubble rake frame 1 through a pin shaft, and the telescopic shaft of the lifting cylinder 17 and the wheel frame lifting and lowering support arm 15, and the telescopic shaft of the leveling cylinder 3 and the traction longitudinal beam 9 are rotatably connected through a pin shaft, which improves the rationality of the design. A depth limiting cylinder 11 disposed below the connecting rod 2 is rotatably provided on one side of the stubble rake frame 1 close to the traction longitudinal beam 9, and a mounting frame 12 is rotatably provided on the telescopic shaft of the depth limiting cylinder 11, and a depth limiting wheel is arranged inside the mounting frame 12. 121, the mounting frame 12 is rotatably connected to the stubble rake frame 1. The design facilitates the adjustment of the height of the depth limiting wheel 121 by using the depth limiting cylinder 11. The depth limiting cylinder 11 and the mounting frame 12 are rotatably connected to the stubble rake frame 1 through a pin shaft, and the telescopic shaft of the depth limiting cylinder 11 is rotatably connected to the mounting frame 12 through a pin shaft, which improves the rationality of the design. A fixing frame 13 is provided on the stubble rake frame 1, and a soil crushing roller 14 is provided on the fixing frame 13 and is placed between the front rake group 102 and the transport tire 16.

[0028] Reference Figure 1 and Figure 2 The first oil circuit distributor 5 and the second oil circuit distributor 6 have the same specifications. A three-way groove 51 is opened inside the first oil circuit distributor 5, and a three-way groove 51 is opened inside the second oil circuit distributor 6. This design facilitates simultaneous liquid supply or liquid return to a pair of branch oil inlet pipes 4 or a pair of branch oil outlet pipes 10 by using the three-way groove 51, wherein the branch oil inlet pipe 4, the branch oil outlet pipe 10, the main oil inlet pipe 7, and the main oil outlet pipe 71 are all hoses and are connected to the three-way grooves 51 of the first oil circuit distributor 5 and the second oil circuit distributor 6 through pipe joints.

[0029] Reference Figure 1-Figure 3As an embodiment of the present utility model: when it is necessary to level the stubble harrow 1, the staff sends the hydraulic oil in the oil tank 183 to the solenoid valve 181 by operating the motor oil pump 182 in the oil supply assembly. Under the action of the solenoid valve 181, the hydraulic oil is delivered to the first oil circuit distributor 5 through the branch oil inlet pipe 4 into the inlet end of the leveling cylinder 3 and the inlet end of the lifting cylinder 17, thereby driving the leveling cylinder 3 and the lifting cylinder 17 to extend at the same time. The hydraulic oil flows out from the outlet end of the leveling cylinder 3 and the outlet end of the lifting cylinder 17 through the branch oil outlet pipe 10 to the inside of the second oil circuit distributor 6, and then flows back to the oil tank 183 through the solenoid valve 181. When it is necessary to shorten the leveling cylinder 3 and the lifting cylinder 17 at the same time, the motor oil pump 182 in the hydraulic station 18 is operated. The oil pump 182 works to transport the hydraulic oil inside the oil tank 183 to the second oil circuit distributor 6 through the solenoid valve 181, and the hydraulic oil flows through the leveling cylinder 3 and the lifting cylinder 17 to drive them to shorten at the same time. The hydraulic oil returns to the first oil circuit distributor 5 and returns to the oil tank 183 through the solenoid valve 181, thereby realizing the simultaneous extension and retraction of the leveling cylinder 3 and the lifting cylinder 17, so that the stubble rake frame 1 is adjusted and kept horizontal under the action of the transport tire 16 and the traction longitudinal beam 9 connected to the tractor 8 as the support point. The operation is simple and the leveling efficiency is high, which facilitates the leveling of the stubble rake frame 1, realizes the simultaneous extension and retraction of the leveling cylinder 3 and the lifting cylinder 17, thereby accelerating the leveling speed of the stubble rake frame 1, and the leveling efficiency is high, thereby improving the practicality of the utility model.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tractor stubble harrow with a high-efficiency leveling device, comprising: A stubble-removing harrow frame (1), wherein a front harrow group (102) and a rear harrow group (101) are arranged at the bottom of the stubble-removing harrow frame (1); It is characterized in that A connecting rod (2) is rotatably provided on one side of the top of the stubble rake frame (1); a leveling oil cylinder (3) is provided on the side of the connecting rod (2) away from the stubble rake frame (1); a traction longitudinal beam (9) connected to a tractor (8) is rotatably provided on the telescopic shaft of the leveling oil cylinder (3); a wheel frame landing arm (15) is rotatably provided on the side of the stubble rake frame (1) away from the traction longitudinal beam (9); and a transport tire (16) is provided on the wheel frame landing arm (15). A lifting cylinder (17) is rotatably arranged on the side of the stubble rake frame (1) away from the traction longitudinal beam (9) and is arranged above the wheel frame lifting and lowering support arm (15); a telescopic shaft of the lifting cylinder (17) is rotatably connected to the wheel frame lifting and lowering support arm (15); and an oil supply component for driving the leveling cylinder (3) and the lifting cylinder (17) to simultaneously extend and retract to adjust the stubble rake frame (1) to maintain its level is arranged between the stubble rake frame (1) and the tractor (8).

2. A tractor stubble harrow with a high-efficiency leveling device according to claim 1, characterized in that: The oil supply assembly comprises a pair of branch oil inlet pipes (4) arranged at the inlet end of the leveling oil cylinder (3) and the inlet end of the lifting oil cylinder (17); a first oil circuit distributor (5) is arranged on the pair of branch oil inlet pipes (4); a pair of branch oil outlet pipes (10) are arranged at the outlet end of the leveling oil cylinder (3) and the outlet end of the lifting oil cylinder (17); a second oil circuit distributor (6) is arranged on the pair of branch oil outlet pipes (10); a main oil inlet pipe (7) is arranged on the first oil circuit distributor (5); a main oil outlet pipe (71) is arranged on the second oil circuit distributor (6); the main oil inlet pipe (7) and the main oil outlet pipe (71) are respectively connected to a hydraulic station (18) on a tractor (8); The hydraulic station (18) comprises an oil tank (183) arranged on the tractor (8); a motor oil pump (182) is arranged on the oil tank (183) via a pipeline; a solenoid valve (181) is arranged on the motor oil pump (182) via a pipeline; one end of the solenoid valve (181) is connected to a main oil inlet pipe (7); the other end of the solenoid valve (181) is connected to a main oil outlet pipe (71); and the solenoid valve (181) is connected to the oil tank (183) via a pipeline.

3. The tractor stubble harrow with a high-efficiency leveling device according to claim 1, characterized in that: The wheel frame lifting and lowering support arm (15), the lifting cylinder (17), and the connecting rod (2) are rotatably connected to the stubble rake frame (1) via a pin shaft, and the telescopic shaft of the lifting cylinder (17) and the wheel frame lifting and lowering support arm (15), and the telescopic shaft of the leveling cylinder (3) and the traction longitudinal beam (9) are rotatably connected via a pin shaft.

4. The stubble harrow for tractors with a high-efficiency leveling device according to claim 1, characterized in that: A depth-limiting oil cylinder (11) disposed below the connecting rod (2) is rotatably provided on one side of the stubble-removing rake frame (1) close to the traction longitudinal beam (9); a mounting frame (12) is rotatably provided on the telescopic shaft of the depth-limiting oil cylinder (11); a depth-limiting wheel (121) is disposed inside the mounting frame (12); and the mounting frame (12) is rotatably connected to the stubble-removing rake frame (1).

5. The stubble harrow for tractors with a high-efficiency leveling device according to claim 4, characterized in that: The depth-limiting oil cylinder (11) and the mounting frame (12) are rotatably connected to the stubble-removing rake frame (1) via a pin shaft, and the telescopic shaft of the depth-limiting oil cylinder (11) is rotatably connected to the mounting frame (12) via a pin shaft.

6. The stubble harrow for tractors with a high-efficiency leveling device according to claim 1, characterized in that: The stubble harrow frame (1) is provided with a fixing frame (13), and the fixing frame (13) is provided with a soil crushing roller (14) placed between the front harrow group (102) and the transport tire (16).

7. The tractor stubble harrow with a high-efficiency leveling device according to claim 2, characterized in that: The first oil circuit distributor (5) and the second oil circuit distributor (6) have the same specifications, and a three-way groove (51) is provided inside the first oil circuit distributor (5).

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