Automatic speed regulation type traction type hydraulic self-power driving harrow

Abstract

The utility model relates to the technical field of agricultural implements, in particular to an automatic speed regulation type traction type hydraulic self-power driving rake which comprises a frame used for being connected with a tractor, a rake body connected to the periphery of the frame, a main power device installed on the frame, a hydraulic transfer case connected to the main power device and an oil pump installed on the hydraulic transfer case. An oil pipe is connected to the oil pump, a proportional valve used for adjusting the flow of liquid in the oil pipe is installed on the oil pipe, and a branch power device used for being connected with the oil pipe is installed on the rake body. Power is transmitted through hydraulic pressure, flexible driving is carried out, a machine tool can be well protected if hard sundries exist, an oil pipe can be made of a soft pipe so that assembly layout can be more convenient and reasonable, the size of the driving harrow can be conveniently increased according to requirements, and the rotating speed of harrow teeth can be adjusted more flexibly through hydraulic transmission; the increase and decrease of the liquid flow can be steplessly adjusted through the proportional valve, so that the adjustable range of the rotating speed is expanded to adapt to different soil environment requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural farming tools, and particularly relates to an automatically speed-regulated traction type hydraulic automatic power-driven harrow. Background Art

[0002] At present, power-driven harrows basically adopt the transmission mode of a transmission shaft to transmit power. The advantage of this structural form is that the power loss is small, but there are also certain defects. For example, since the transmission shaft is a rigid connection, when encountering sundries, it is easy to cause damage to the working components, gearbox, transmission shaft and tractor.

[0003] Generally, a power transmission shaft has only two rotational speeds (540 rpm and 1000 rpm), and 540 rpm is less used due to its too slow rotational speed. The power-driven harrow itself also has two adjustable rotational speeds. In this way, a total of 4 rotational speed modes can be achieved when combined. Facing complex tillage requirements, these 4 rotational speed modes far from reach the ideal working rotational speed, and the rotational speed conversion is very inconvenient. Content of the Utility Model

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides an automatically speed-regulated traction type hydraulic automatic power-driven harrow.

[0005] The automatically speed-regulated traction type hydraulic automatic power-driven harrow provided by the utility model adopts the following technical scheme:

[0006] An automatically speed-regulated traction type hydraulic automatic power-driven harrow includes a frame for connecting a tractor. A harrow body is connected to the periphery of the frame. A main power device is installed on the frame. A hydraulic power divider is connected to the main power device. An oil pump is installed on the hydraulic power divider. A hydraulic pipe is connected to the oil pump. A proportional valve for regulating the liquid flow rate in the hydraulic pipe is installed on the hydraulic pipe. A sub-power device for connecting with the hydraulic pipe is installed on the harrow body.

[0007] By adopting the above technical scheme, hydraulic power is used for transmission and flexible drive. If hard sundries are encountered, the machine can be better protected. The hydraulic pipe can adopt soft pipes, which can make the component layout more convenient and reasonable. Also, the volume of the drive harrow can be conveniently increased according to requirements. The hydraulic drive is more flexible in regulating the rotational speed of the harrow teeth. The increase and decrease of the liquid flow rate can be steplessly adjusted through the proportional valve, thereby expanding the adjustable range of the rotational speed to meet the requirements of different soil environments.

[0008] Optionally, the proportional valve is adjusted through a PLC control system.

[0009] By adopting the above technical scheme, the PLC control system has high controllability and is convenient for actual use.

[0010] Optionally, the proportional valve transmits signals to the PLC control system through a wireless transmission system.

[0011] By adopting the above technical solution, the wireless transmission system facilitates the operator to control the proportional valve remotely.

[0012] Optionally, the wireless transmission system is a wifi or bluetooth system.

[0013] By adopting the above technical solution, the wifi or bluetooth system is relatively mature and easy to use.

[0014] Optionally, the signal input source of the wireless transmission system is voice input or button input.

[0015] By adopting the above technical solution, both voice or button input can meet the operation requirements of the operator in the cab, thus facilitating the operator's operation.

[0016] Optionally, a depth-limiting wheel set is installed at the bottom of the vehicle frame.

[0017] By adopting the above technical solution, the depth of soil harrowing is effectively controlled.

[0018] Optionally, harrow bodies are arranged on both the left and right sides and the rear side of the vehicle frame, and the working directions between the harrow bodies are the same.

[0019] By adopting the above technical solution, the vehicle frame can drive three harrow bodies simultaneously according to requirements, expanding the single-time harrow body area and improving the operation efficiency.

[0020] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0021] 1. Adopting hydraulic power transmission for flexible drive can better protect the machine in case of hard debris. The oil pipe can use soft pipes, which makes the component layout more convenient and reasonable. Also, the drive harrow volume can be conveniently increased according to requirements. The hydraulic transmission can adjust the harrow tooth speed more flexibly. The increase or decrease of the liquid flow can be steplessly adjusted through the proportional valve, thus expanding the adjustable speed range to meet the requirements of different soil environments;

[0022] 2. The wireless transmission system facilitates the operator to control the proportional valve remotely;

[0023] 3. Both voice or button input can meet the operation requirements of the operator in the cab, thus facilitating the operator's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural view of the automatic speed-regulating type traction hydraulic self-powered drive harrow according to an embodiment of the present utility model.

[0025] Description of reference numerals: 1. Frame; 2. Harrow body; 3. Main power device; 4. Hydraulic power divider; 5. Oil pump; 6. Oil pipe; 7. Proportional valve; 8. Sub-power device; 9. Depth-limiting wheel set. Specific implementation mode

[0026] The following will further elaborate on the present utility model in conjunction with the attached Figure 1 drawings.

[0027] An embodiment of the present utility model discloses an automatically speed-regulated traction type hydraulic self-powered drive harrow. Referring to Figure 1 , the automatically speed-regulated traction type hydraulic self-powered drive harrow includes a frame 1 for connecting with a tractor; a harrow body 2 is connected to each of the left, right and rear sides of the frame 1, and the three harrow bodies 2 are arranged side by side and have the same working direction; a main power device 3 is installed on the frame 1. The main power device 3 in this embodiment is an engine, and in other embodiments, an electric motor can also be selected, which is not limited herein.

[0028] Referring to Figure 1 , the output end of the main power device 3 is connected to a hydraulic power divider 4, and three oil pumps 5 are installed on the output end of the hydraulic power divider 4. An oil pipe 6 is connected to the oil pump 5. The oil pipe 6 is made of a flexible hose to facilitate bending and deformation; a proportional valve 7 is installed on the oil pipe 6, and a sub-power device 8 with a hydraulic motor and a gearbox is installed on the harrow body 2, and the oil pipe 6 is connected to the sub-power device 8.

[0029] Referring to Figure 1 , the proportional valve 7 can have various control methods, such as electronic, PLC, etc. In this embodiment, a PLC control system is used in cooperation with a liquid flowmeter to facilitate receiving control signals to regulate the liquid flow in the oil pipe 6; the signal transmission method can adopt a wireless transmission system, such as a WiFi or Bluetooth system, and the operator can control it through voice input or button input, which is convenient for the operator to adjust the harrow tooth speed in real time in the cab.

[0030] Since the oil pump 5 outputs at a constant pressure, the change in flow directly affects the speed of the hydraulic motor, but does not affect its constant torque output. Thus, the cutting force of the harrow teeth does not change due to the change in speed, and the adjustment of the harrow tooth speed can be achieved only through voice or button. The increase and decrease of the hydraulic flow can be steplessly adjusted within the range of 0 - 500 rpm to adapt to various working environments and achieve ideal working effects and economy; a depth-limiting wheel set 9 is also installed at the bottom of the frame 1.

[0031] The implementation principle of the automatic speed-regulating type traction hydraulic automatic power-driven harrow in the embodiment of the utility model is as follows: Hydraulic transmission is adopted for flexible driving, and the machine can be well protected when encountering hard sundries; The use of soft tubing for the tubing 6 can make the component layout more convenient and reasonable, and the overall volume of the driving harrow can also be conveniently increased according to requirements. The hydraulic transmission is more flexible in adjusting the rotation speed of the harrow teeth and can better adapt to different soil environments; The voice and button control flow system makes the control process of the rotation speed of the harrow teeth simpler and more efficient, and can meet the requirement of conveniently carrying out harrowing operations under various soil conditions.

[0032] The above are all the preferred embodiments of the utility model, and the protection scope of the utility model is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the utility model shall be covered within the protection scope of the utility model.

Claims

1. An automatically speed-adjustable traction type hydraulic self-powered driving harrow, characterized in that: It includes a frame (1) for connecting a tractor, a harrow body (2) is connected around the frame (1), a main power device (3) is installed on the frame (1), a hydraulic power take-off box (4) is connected to the main power device (3), an oil pump (5) is installed on the hydraulic power take-off box (4), a tubing (6) is connected to the oil pump (5), a proportional valve (7) for regulating the liquid flow rate in the tubing (6) is installed on the tubing (6), and a sub-power device (8) for connecting to the tubing (6) is installed on the harrow body (2).

2. The automatically speed-adjustable traction hydraulic self-powered driving harrow according to claim 1, characterized in that: The proportional valve (7) is adjusted through a PLC control system.

3. The automatic speed regulation type traction hydraulic automatic power driven harrow according to claim 2, wherein: The proportional valve (7) transmits signals to the PLC control system through a wireless transmission system.

4. The automatic speed-regulating type traction hydraulic automatic power-driven harrow according to claim 3, characterized in that: The wireless transmission system is a wifi or Bluetooth system.

5. The automatically speed-adjustable traction type hydraulic self-powered driving harrow according to claim 3 or 4, wherein: The signal input source of the wireless transmission system is voice input or button input.

6. The automatically speed-adjustable traction type hydraulic automatic power-driven harrow according to claim 1, wherein: A depth-limiting wheel set (9) is installed at the bottom of the frame (1).

7. The automatically speed-adjustable traction hydraulic self-powered driving harrow according to claim 1, wherein: Harrow bodies (2) are arranged on both the left and right sides and the rear side of the frame (1), and the working directions between the harrow bodies (2) are the same.

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