Rotating speed self-control type traction type hydraulic self-power driving rake

Abstract

The invention relates to a rotating speed self-control type traction type hydraulic self-power driving harrow which comprises a frame used for being connected with a tractor, harrow bodies 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, an oil pump installed on the hydraulic transfer case and an oil pipe connected to the oil pump. The rake body is provided with a power dividing device used for being connected with an oil pipe, and the oil pipe is provided with a proportional valve used for adjusting the flow of liquid in the oil pipe. And the encoder is used for collecting the advancing speed of the rake body to adjust the proportional valve. Power is transmitted through hydraulic pressure, a machine tool can be well protected if hard sundries are encountered, the proportional valve can change the liquid flow in the oil pipe so as to change the rotating speed of the rake teeth, the encoder automatically controls the flow change by collecting the advancing speed of the rake body, and the aim of changing the rotating speed of the rake teeth according to the advancing speed of the rake body is achieved. Therefore, the cutting times of the rake teeth within the unit operation length are constant, the advancing speed can be increased, and the oil consumption can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery and implements, in particular to a speed-automatic-controlled traction-type hydraulic automatic power-driven rake. Background Art

[0002] At present, power-driven harrows basically use drive shaft transmission to transmit power. The advantage of this structural form is that the power loss is small, but it also has certain defects. For example, since the drive shaft is hard-connected, when encountering debris, it is easy to cause damage to the working components, gearbox, drive shaft and tractor.

[0003] The current usage scenario is that the power harrow requires an input speed of 1000rpm and a working speed of ≤7km / h. The slower the forward speed, the better the harrowing effect, because the number of cuts per unit area is greater. Since the size of the cutter disc teeth is fixed, the more cuts per unit length, the better. However, the slower the forward speed, the lower the work efficiency. Summary of the invention

[0004] In order to solve the above problems in the prior art, the present invention provides a speed-automatic traction hydraulic automatic power-driven rake.

[0005] The invention provides a speed-controlled traction hydraulic automatic power-driven harrow adopts the following technical solution: A speed-controlled traction hydraulic automatic power-driven rake comprises a frame for connecting to a tractor, a rake body is connected to the periphery of the frame, a main power device is installed on the frame, a hydraulic transfer case is connected to the main power device, an oil pump is installed on the hydraulic transfer case, an oil pipe is connected to the oil pump, a power distribution device for connecting to the oil pipe is installed on the rake body, a proportional valve for adjusting the flow of liquid in the oil pipe is installed on the oil pipe; and an encoder for collecting the travel speed of the rake body to adjust the proportional valve is also included.

[0006] By adopting the above technical scheme, hydraulic power is transmitted for flexible driving. If hard debris is encountered, the machine can be better protected. The oil pipe can be made of soft pipe material to make the component layout more convenient and reasonable, and the driving rake volume can be conveniently increased according to needs. The hydraulic transmission is more flexible in adjusting the rake tooth speed. The proportional valve can change the liquid flow in the oil pipe, thereby changing the rake tooth speed to adapt to different soil environment requirements. The encoder automatically controls the flow change by collecting the travel speed of the rake body, thereby achieving the purpose of changing the rake tooth speed according to the travel speed of the rake body, so as to ensure that the number of rake tooth cutting times within the unit operating length is constant, thereby increasing the travel speed, so as to work efficiently and reduce fuel consumption.

[0007] Optionally, the proportional valve is regulated via a PLC control system.

[0008] By adopting the above technical solution, the PLC control system has high controllability and is convenient for practical use.

[0009] Optionally, the proportional valve transmits a signal to a PLC control system via a wireless transmission system.

[0010] By adopting the above technical solution, the wireless transmission system makes it easy for operators to control the proportional valve remotely.

[0011] Optionally, the wireless transmission system is a wifi or bluetooth system.

[0012] By adopting the above technical solutions, the wifi or bluetooth system is relatively mature and easy to use.

[0013] Optionally, the signal input source of the wireless transmission system is voice input or key input.

[0014] By adopting the above technical solution, voice or key input can meet the operator's needs for operation in the cab, thereby facilitating the operator's operation.

[0015] Optionally, the encoder is mounted on the rake body or the frame.

[0016] By adopting the above technical solution, operators can perform selective installation according to usage requirements.

[0017] Optionally, a limited depth wheel set is installed at the bottom of the frame.

[0018] By adopting the above technical solution, the raking depth can be effectively controlled.

[0019] Optionally, rake bodies are arranged on the left and right sides and the rear side of the frame, and the working directions of the rake bodies are the same.

[0020] By adopting the above technical solution, three rake bodies can be driven simultaneously by the frame according to demand, thereby expanding the single rake body area and improving the working efficiency.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects: 1. It uses hydraulic power transmission for flexible driving. If it encounters hard debris, it can better protect the machine. The oil pipe can be made of soft pipe material to make the component layout more convenient and reasonable. It can also increase the driving harrow volume according to needs. The hydraulic transmission is more flexible in adjusting the harrow tooth speed and can better adapt to different soil environments. 2. The proportional valve can change the liquid flow in the oil pipe, thereby changing the rake tooth speed to adapt to different soil environment requirements; 3. The encoder automatically controls the flow change by collecting the travel speed of the rake body, so as to change the rake tooth speed according to the travel speed of the rake body, so as to ensure that the number of rake tooth cutting within the unit operating length is constant, thereby increasing the travel speed, so as to work efficiently and reduce fuel consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The invention discloses a structural diagram of a speed-controlled traction hydraulic automatic power-driven rake according to an embodiment of the present invention.

[0023] Explanation of the reference numerals: 1. frame; 2. rake body; 3. main power device; 4. hydraulic transfer case; 5. oil pump; 6. oil pipe; 7. proportional valve; 8. power device; 9. depth-limiting wheel set; 10. encoder. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 The present invention is described in further detail.

[0025] The embodiment of the present invention discloses a speed-controlled traction hydraulic automatic power-driven rake. Figure 1 The speed-controlled traction hydraulic automatic power-driven harrow includes a frame 1, which is used to be connected to a tractor; a harrow body 2 is connected to the left and right sides and the rear side 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, and the main power device 3 in this embodiment is an engine. In other embodiments, an electric motor can also be selected, which is not limited here.

[0026] Reference Figure 1 The output end of the main power device 3 is connected to a hydraulic transfer case 4, and three oil pumps 5 are installed on the output end of the hydraulic transfer case 4. The oil pump 5 is connected to an oil pipe 6, and the oil pipe 6 adopts a soft pipe 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 rake body 2, and the oil pipe 6 is connected to the sub-power device 8.

[0027] Reference Figure 1 The proportional valve 7 can be controlled in a variety of ways, such as electronic, PLC, etc. In this embodiment, a PLC control system is used in conjunction with a liquid flow meter to receive a control signal 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 key input, which is convenient for the operator to adjust the rake tooth speed in real time in the cab.

[0028] Since the oil pump 5 outputs at a constant pressure, changes in flow directly affect the rotational speed of the hydraulic motor without affecting its constant torque output. In this way, the cutting force of the rake teeth does not change due to changes in rotational speed. The rake tooth rotational speed can be adjusted only by voice or buttons. The increase or decrease in hydraulic flow can be adjusted steplessly within the range of 0-500rpm to adapt to various working environments and achieve ideal working effects and economy.

[0029] Reference Figure 1 A limited depth wheel set 9 is installed at the bottom of the frame 1, and an encoder 10 for sensing the travel speed of the rake body 2 is installed on the rake body 2. The encoder 10 is connected to the PLC control system, so as to automatically control the proportional valve 7 according to the travel speed of the rake body 2 to change the liquid flow in the oil pipe 6, thereby changing the rotation speed of the rake teeth.

[0030] Reference Figure 1 Each rake body 2 is independently controlled. When the rake body 2 moves at a fast speed, the rake tooth speed increases accordingly. When the rake body 2 moves at a slow speed, the rake tooth speed decreases accordingly, thereby making the moving speed and the rake tooth speed linearly positively correlated, thereby ensuring that the number of rake tooth cutting times within a unit operating length is constant, thereby increasing the moving speed to achieve efficient operation and reduce fuel consumption. The encoder 10 can also be installed on the frame 1 or the depth-limiting wheel set 9, that is, to meet the use requirements. Voice, button control systems and encoders 10 can all be used as control methods for adjusting the rake tooth speed.

[0031] The implementation principle of the speed-controlled traction hydraulic automatic power-driven rake of the embodiment of the present invention is: hydraulic power is transmitted for flexible driving, and the machine can be better protected if hard debris is encountered; the oil pipe 6 is made of soft pipe material to make the component layout more convenient and reasonable, and the overall volume of the driving rake can be easily increased according to needs. The hydraulic transmission is more flexible in adjusting the rake tooth speed and can better adapt to different soil environments; the voice, button control flow system or the control flow system using the encoder 10 makes the rake tooth speed control process simpler and more efficient, which can meet the needs of convenient raking operations under various soil conditions.

[0032] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A speed-controlled, traction-type, hydraulically driven, self-powered harrow, characterized by: The invention comprises a frame (1) for connecting to a tractor, a rake body (2) connected to the periphery of the frame (1), a main power device (3) installed on the frame (1), a hydraulic transfer case (4) connected to the main power device (3), an oil pump (5) installed on the hydraulic transfer case (4), an oil pipe (6) connected to the oil pump (5), a power sub-device (8) for connecting to the oil pipe (6) installed on the rake body (2), and a proportional valve (7) for adjusting the flow rate of liquid in the oil pipe (6) installed on the oil pipe (6); and an encoder (10) for collecting the travel speed of the rake body (2) to adjust the proportional valve (7).

2. The speed-controlled, traction-type hydraulic self-powered harrow according to claim 1, characterized in that: The proportional valve (7) is adjusted by the PLC control system.

3. The speed-controlled, traction-type, hydraulically driven, self-powered rake according to claim 2, characterized in that: The proportional valve (7) transmits signals to the PLC control system via a wireless transmission system.

4. The speed-controlled, traction-type hydraulic self-powered rake according to claim 3, characterized in that: The wireless transmission system is a Wi-Fi or Bluetooth system.

5. The speed-controlled traction hydraulic self-powered harrow according to claim 3 or 4, characterized in that: The signal input source of the wireless transmission system is voice input or key input.

6. The speed-controlled, traction-type hydraulic self-powered harrow according to claim 1, characterized in that: The encoder (10) is mounted on the rake body (2) or the vehicle frame (1).

7. The speed-controlled, traction-type hydraulic self-powered harrow according to claim 1, characterized in that: A limited depth wheel set (9) is installed at the bottom of the vehicle frame (1).

8. The speed-controlled, traction-type, hydraulically driven, self-powered rake according to claim 1, characterized in that: The left and right sides and the rear side of the vehicle frame (1) are all provided with rake bodies (2), and the operating directions of the rake bodies (2) are the same.

Images