CN104802638B - Power system and rotary cultivator adopting power system - Google Patents

Abstract

The invention relates to a power system and a rotary tiller using the same. A transmission system is suitable for a crawler type rotary tiller. It includes a power output transmission box, a hydraulic pump, a hydraulic motor, and a travel gearbox. The power output transmission box is connected to the travel gearbox through the hydraulic pump and the hydraulic motor. The traveling gearbox and the power output transmission box are longitudinally arranged in the center of the machine frame, and the left and right centers of gravity are balanced; the power output transmission box and the traveling gearbox are connected by a hydraulic pump and a hydraulic motor, which is convenient for arrangement and high in transmission efficiency.

Description

A kind of power system and rotary cultivator adopting it

technical field

The invention relates to the technical field of agricultural machinery, in particular to a transmission system of a rotary tiller and a rotary tiller equipped with such a transmission device.

Background technique

There are two kinds of arrangement relations of engines, gearboxes and power output transmission boxes of existing products on the market. In the first type, the travel gearbox is at the front, the engine is placed horizontally in the center, and the power output transmission box is at the end. The engine power is transmitted to the front travel gearbox and the rear power output transmission box through the belt. Disadvantages: 1. The engine must be placed horizontally, and the water tank is placed on the side. The plane of the water tank cover is 90° from the forward direction, which is easy to absorb dust and cause excessive water temperature failures; 2. The combination of the engine and the water tank makes the left and right width of the whole machine larger , It is not conducive to the arrangement of the left and right centers of gravity; 3. The efficiency of belt transmission is low (10-15% lower than that of direct coupling). In the second type, the engine is placed vertically at the front of the frame, directly connected to the central travel gearbox, and the power output transmission box is at the end. In order to facilitate the connection and consider the strength, the travel gearbox and the power output transmission box are designed as a conjoined body. Disadvantages: 1. In order to ensure reliable driving, the travel gearbox must be rigidly connected to the frame, so that the engine and power output transmission box connected to it must also be rigidly connected to the frame. The vibration generated by the engine will directly affect the vibration of the cab. Vibrates so much that it vibrates very loudly when walking on hard surfaces. 2. The walking gearbox and the power output transmission box are designed as a conjoined body, with complex structure, large volume and poor strength.

Aiming at the disadvantages of complex structure, large volume, poor strength and low transmission efficiency in the prior art, the present invention makes further improvements.

Contents of the invention

The object of the present invention is to provide a highly efficient transmission system in order to overcome the above disadvantages.

A transmission system includes a power output transmission box, a hydraulic pump, a hydraulic motor, and a travel gearbox, characterized in that the power output transmission box is connected to the travel gearbox through a hydraulic pump and a hydraulic motor.

Preferably, the first power output shaft of the power output transmission box is connected to a hydraulic pump, and the hydraulic pump is connected to a hydraulic motor through an oil pipe, and the hydraulic motor is connected to a travel gearbox.

Preferably, the first power output shaft of the power output transmission box is splined to the hydraulic pump, and the hydraulic motor is splined to the travel gearbox.

Preferably, it also includes an oil radiator, a hydraulic component, and a hydraulic oil tank. The hydraulic component is composed of a control valve for controlling the direction and a hydraulic oil filter for filtering the hydraulic oil. The oil radiator is installed in the water tank cover. The oil tank is installed at the lower position of the front end of the operating frame, the hydraulic valve is installed at the lower right side of the operating frame rear end, and the hydraulic oil filter is installed on the left frame of the chassis frame.

Preferably, the hydraulic oil filter has an oil inlet and an oil outlet, the oil inlet communicates with the hydraulic oil tank through the hydraulic oil pipe, and the oil outlet communicates with the oil inlet of the hydraulic pump through the hydraulic oil pipe .

Preferably, the hydraulic component also includes a hydraulic oil cylinder, which is installed on the chassis frame and connected with the suspension system to control the suspension system to rise and fall.

Preferably, the hydraulic components also include a steering oil cylinder, which is installed at the front and lower part of the travel gearbox to control the steering of the travel gearbox.

Preferably, a second power output shaft is also included, and the second power output shaft is connected with the suspension system to provide power for the suspension system.

Preferably, the travel gearbox and the power output transmission box are arranged in a straight line at the center of the chassis frame, the travel gearbox is at the front, and the power output transmission box is at the rear.

Preferably, the power system is suitable for crawler-type rotary tillers, crawler-type tractors, and crawler-type harvesters.

A rotary tiller, comprising one of the above transmission systems.

Compared with the prior art, the beneficial effect of the present invention is that: the traveling gearbox and the power output transmission box are longitudinally arranged in the center of the frame, and the left and right centers of gravity are balanced; Motor connection, convenient layout, high transmission efficiency.

Description of drawings

Fig. 1 is a top view of the present invention;

Fig. 2 is an oil circuit diagram of the present invention;

Labels in the figure: 11-chassis frame; 21-engine; 211-shock pad; 212-flywheel; 27-travel gearbox; 28-power output transmission box; 281-power input shaft; 282-second power output shaft ; 35-hydraulic pump; 36-hydraulic motor; 334-oil pipe; 32-oil radiator; 34-hydraulic oil tank; 333-hydraulic oil filter.

detailed description

The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

As shown in Figure 1 and Figure 2, a power system is suitable for crawler-type rotary tillers, crawler-type tractors or crawler-type harvesters, including a power output transmission box 28, a hydraulic pump 35, a hydraulic motor 36, and a travel gearbox 27 , walking gearbox 27, power take-off transmission box 28 are arranged in a straight line at the center of the chassis frame 11, the front of the walking gearbox 27, the rear of the power take-off transmission box 28, the power input shaft 281 of the power take-off transmission box 28 and the engine The flywheel 212 is rigidly connected, the first power output shaft of the power output transmission box 28 is splined with the hydraulic pump 35, the hydraulic pump 35 is connected with the hydraulic motor 36 through the oil pipe, the hydraulic motor 36 is connected with the travel gearbox 27, and the second The power take-off shaft is connected with the suspension system.

When the engine 21 works, the power is transmitted to the power output transmission box 28 through the flywheel 212 and the power input shaft 281, and then the power output transmission box 28 is transmitted to the hydraulic pump 35 through the first power output shaft, and the 35 hydraulic pump 35 transmits the power output transmission The mechanical energy transmitted by the box 28 is converted into the pressure energy of the hydraulic oil, and the hydraulic motor 36 is driven to move by the pressure energy for power output, and the power is transmitted to the travel gearbox 27 through the spline connection between the hydraulic motor 36 and the travel gearbox 27 . The second power output shaft 282 is connected with the suspension system to provide power for the suspension system at the rear of the rotary tiller.

The hydraulic part also includes an oil radiator (32), a hydraulic component, and a hydraulic oil tank (34). The hydraulic component consists of a control valve for controlling the direction, a hydraulic oil filter (333) for filtering the hydraulic oil, and a reciprocating motion. The oil radiator (32) is installed in the water tank cover, the hydraulic oil tank is installed in the lower position of the front end of the operation frame, and the hydraulic valve is installed in the rear end of the operation frame. The hydraulic oil filter is installed on the left frame of the chassis frame (11). The hydraulic oil filter (333) has an oil inlet and an oil outlet, the oil inlet communicates with the hydraulic oil tank through the hydraulic oil pipe, and the oil outlet communicates with the oil inlet of the hydraulic pump (35) through the hydraulic oil pipe connected. The hydraulic oil cylinder is installed on the chassis frame (11), links to each other with the suspension system, and controls the suspension system lifting. The steering oil cylinder is installed at the front and bottom of the travel gearbox to control the steering of the travel gearbox.

A rotary tiller includes the above transmission system.

The foregoing description shows and describes preferred embodiments of the present invention, and as previously stated, it is to be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments but may be applied to various other embodiments. Combinations, modifications and circumstances, and can be modified within the scope of the inventive concept described herein, by the above teachings or by skill or knowledge in the relevant field. However, changes and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all be within the protection scope of the appended claims of the present invention.

Claims (8)

1. a transmission system, comprising a power output transmission case (28), a hydraulic pump (35), a hydraulic motor (36), a travel gearbox (27), is characterized in that: a power output transmission case (28) passes through a hydraulic pump ( 35) and the hydraulic motor (36) are connected with the travel gearbox (27), the first power output shaft of the power output transmission box (28) is connected with the hydraulic pump (35), and the hydraulic pump (35) is connected with the hydraulic pressure through the oil pipe (334). The motor (36) links to each other, the hydraulic motor (36) links to each other with the travel gearbox (27), the power input shaft (281) of the power output transmission box (28) is rigidly connected with the flywheel (212) of the engine, and the first A power output shaft is splined to the hydraulic pump, the hydraulic motor is splined to the travel gearbox, and includes an oil radiator (32), hydraulic components, and a hydraulic oil tank (34). The hydraulic components are controlled by control valves, It is composed of a hydraulic oil filter (333) for filtering the hydraulic oil, the oil radiator (32) is installed in the water tank cover, the hydraulic oil tank is installed at the front end of the operating frame and the hydraulic valve is installed in the operating machine The lower right side of the frame rear end, the hydraulic oil filter is installed on the left side frame of the chassis frame (11). 2. The transmission system according to claim 1, characterized in that: the hydraulic oil filter (333) has an oil inlet and an oil outlet, and the oil inlet communicates with the hydraulic oil tank through a hydraulic oil pipe, The oil outlet communicates with the oil inlet of the hydraulic pump (35) through a hydraulic oil pipe. 3. The transmission system according to claim 1, characterized in that: the hydraulic components also include a hydraulic cylinder, the hydraulic cylinder is installed on the chassis frame (11), connected with the suspension system, and controls the lifting of the suspension system. 4. The transmission system according to claim 3, wherein the hydraulic components further include a steering oil cylinder, which is installed at the front and lower part of the travel gearbox to control the steering of the travel gearbox. 5. The transmission system according to claim 1, characterized in that it further comprises a second power output shaft (282), the second power output shaft is connected with the suspension system to provide power for the suspension system. 6. The transmission system according to any one of claims 1-5, characterized in that: the travel gearbox (27) and the power output transmission box (28) are arranged in a straight line at the center of the chassis frame (11), and the travel Gear box (27) front, power output transmission case (28) rear. 7. The transmission system according to claim 1, which is suitable for crawler-type rotary tillers, crawler-type tractors or crawler-type harvesters. 8. A rotary tiller, comprising the transmission system according to any one of claims 1-6.