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

Abstract

The utility model 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, a harrow 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, 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 utility model relates to the technical field of agricultural agricultural machinery, in particular to a rotation speed self-control type traction hydraulic automatic power driven harrow. Background Technique

[0002] At present, the power driven harrow basically adopts the transmission mode of the 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 hard connection, when encountering sundries, it is easy to cause damage to the working components, the gearbox, the transmission shaft and the tractor.

[0003] The existing use scenario is that the power harrow requires the input rotation speed to be 1000 rpm, the working speed ≤ 7 km / h, and the slower the forward speed, the better the harrowing effect, because the number of cutting times per unit area is more. Since the size of the cutter head harrow teeth is fixed. That is to say, the more cutting times per unit length, the better, but the slower the traveling speed, the lower the working efficiency. Content of the Utility Model

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

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

[0006] A rotation speed self-control type traction hydraulic automatic power driven harrow includes a frame for connecting a tractor, a harrow body is connected around 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 oil pipe is connected to the oil pump, a sub-power device for connecting with the oil pipe is installed on the harrow body, and a proportional valve for adjusting the liquid flow in the oil pipe is installed on the oil pipe; it also includes an encoder for collecting the traveling speed of the harrow body to adjust the proportional valve.

[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 oil pipe can adopt soft pipes, which can make the component layout more convenient and reasonable, and the volume of the drive harrow can also be increased conveniently according to requirements. The hydraulic transmission is more flexible in adjusting the rotation speed of the harrow teeth. The proportional valve can change the liquid flow in the oil pipe, thereby changing the rotation speed of the harrow teeth to adapt to the requirements of different soil environments. The encoder automatically controls the flow change by collecting the traveling speed of the harrow body, so as to achieve the purpose of changing the rotation speed of the harrow teeth according to the traveling speed of the harrow body, so as to ensure that the number of cutting times of the harrow teeth per unit working length is constant, and then the traveling speed can be increased to operate efficiently and reduce fuel consumption.

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

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

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

[0011] By adopting the above technical solutions, 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 solutions, 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 solutions, both voice or button input can meet the operation requirements of the operator in the cab, thus facilitating the operator's operation.

[0016] Optionally, the encoder is installed on the harrow body or the vehicle frame.

[0017] By adopting the above technical solutions, the operator can install it selectively according to the usage requirements.

[0018] Optionally, a depth-limiting wheel set is installed at the bottom of the vehicle frame.

[0019] By adopting the above technical solutions, the depth of harrowing soil can be effectively controlled.

[0020] 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.

[0021] By adopting the above technical solutions, the vehicle frame can drive three harrow bodies simultaneously according to the requirements, expanding the single-time harrow body area and improving the operation efficiency.

[0022] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0023] 1. Adopting hydraulic power transmission for flexible drive, it 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. It can also conveniently increase the driven harrow volume according to the requirements. The hydraulic transmission is more flexible in adjusting the speed of the harrow teeth and can better adapt to different soil environments;

[0024] 2. The proportional valve can change the liquid flow in the oil pipe, thereby changing the speed of the harrow teeth to meet the requirements of different soil environments;

[0025] 3. The encoder automatically controls the flow rate change by collecting the traveling speed of the harrow body, achieving the purpose of changing the rotating speed of the harrow teeth according to the traveling speed of the harrow body, so as to ensure that the cutting times of the harrow teeth within the unit operation length are constant, and then the traveling speed can be increased to operate efficiently and reduce fuel consumption. Brief Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a rotation speed self-control type traction hydraulic self-power drive harrow according to an embodiment of the present invention.

[0027] Description of the reference numerals: 1, frame; 2, harrow body; 3, main power device; 4, hydraulic power divider box; 5, oil pump; 6, oil pipe; 7, proportional valve; 8, sub-power device; 9, depth-limiting wheel set; 10, encoder. Detailed Description of the Specific Embodiment

[0028] The following further describes the present invention in detail Figure 1 in conjunction with the accompanying drawings.

[0029] An embodiment of the present invention discloses a rotation speed self-control type traction hydraulic self-power drive harrow. Referring to Figure 1 , the rotation speed self-control type traction hydraulic self-power drive harrow includes a frame 1, and the frame 1 is used to connect 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 operation direction; a main power device 3 is installed on the frame 1, and the main power device 3 in this embodiment is an engine, and in other embodiments, a motor can also be selected, which is not limited herein.

[0030] Referring to Figure 1 , the output end of the main power device 3 is connected to a hydraulic power divider box 4, three oil pumps 5 are installed on the output end of the hydraulic power divider box 4, an oil pipe 6 is connected to the oil pump 5, and the oil pipe 6 is a flexible pipe to facilitate bending 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.

[0031] 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 rate 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 by means of voice input or key input, which is convenient for the operator to adjust the rotating speed of the harrow teeth in real time in the cab.

[0032] Since the oil pump 5 outputs at a constant pressure, the change in flow rate directly affects the rotational speed of the hydraulic motor, but does not affect its constant torque output. Thus, the cutting force of the harrow teeth does not change with the change in rotational speed. The adjustment of the rotational speed of the harrow teeth can be achieved only through voice or button presses. The increase or decrease of the hydraulic flow rate can be steplessly adjusted within the range of 0 - 500 rpm to adapt to various operating environments and achieve ideal operating effects and economy.

[0033] Referring to Figure 1 , a depth-limiting wheel set 9 is installed at the bottom of the frame 1, and an encoder 10 for sensing the traveling speed of the harrow body 2 is installed on the harrow body 2. The encoder 10 is connected to the PLC control system, so as to automatically control the proportional valve 7 according to the traveling speed of the harrow body 2 to change the liquid flow rate in the oil pipe 6, and further change the rotational speed of the harrow teeth.

[0034] Referring to Figure 1 , each harrow body 2 is independently controlled. When the traveling speed of the harrow body 2 is fast, the rotational speed of the harrow teeth increases accordingly. When the traveling speed of the harrow body 2 is slow, the rotational speed of the harrow teeth decreases accordingly. Thus, the traveling speed and the rotational speed of the harrow teeth are linearly positively correlated, so as to ensure that the number of cutting times of the harrow teeth per unit operating length is constant, and further the traveling speed can be increased 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, it only needs to meet the use requirements. The voice and button control system and the encoder 10 can both be used as control methods for adjusting the rotational speed of the harrow teeth.

[0035] The implementation principle of the rotation speed self-control type traction hydraulic self-powered drive harrow in the embodiment of the present utility model is as follows: Hydraulic power is transmitted for flexible drive. If hard debris is encountered, the machine can be better protected; The oil pipe 6 uses soft pipes, which can make the component layout more convenient and reasonable, and can also conveniently increase the overall volume of the drive harrow according to needs. The hydraulic drive is more flexible in adjusting the rotational speed of the harrow teeth and can better adapt to different soil environments; The voice and button control flow rate system or the control flow rate system using the encoder 10 makes the control process of the rotational speed of the harrow teeth simpler and more efficient, and can meet the requirement of conveniently carrying out harrowing operations under various soil conditions.

[0036] The above are all preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A traction type hydraulic automatic power driven harrow with self - controlled rotational speed, 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 sub-power device (8) for connecting with the tubing (6) is installed on the harrow body (2), and a proportional valve (7) for regulating the liquid flow rate in the tubing (6) is installed on the tubing (6); it also includes an encoder (10) for collecting the traveling speed of the harrow body (2) to regulate the proportional valve (7).

2. The speed self-controlled traction type hydraulic automatic power-driven harrow according to claim 1, characterized in that: The proportional valve (7) is regulated through a PLC control system.

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

5. The rotation speed self-controlled traction type hydraulic automatic power-driven harrow according to claim 3 or 4, characterized in that: The signal input source of the wireless transmission system is voice input or button input.

6. The rotation speed self-controlled traction type hydraulic automatic power-driven harrow according to claim 1, characterized in that: The encoder (10) is installed on the harrow body (2) or the frame (1).

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

8. The self-rotating speed-controlled traction type hydraulic automatic power-driven harrow according to claim 1, wherein: Harrow bodies (2) are arranged on the left, right and rear sides of the frame (1), and the working directions between the harrow bodies (2) are the same.

Images