CN206723170U - A kind of hydraulic motor is completed the hydraulic system of different operating modes by two reversal valve controls - Google Patents

Abstract

A hydraulic motor is independently controlled by two reversing valves under different working conditions to complete different hydraulic systems, which makes the operation of the equipment simple and stable. The utility model is composed of plane thread (1) oil tank (2) oil filter (3) hydraulic pump (4) overflow valve (5) multi-way reversing valve (6) hydraulic cylinder (7) one-way balance valve (8) ) Hydraulic motor (9) consists of one-way valve. The 5‑3 reversing valve is connected in series with (7) the one-way balance valve (6) hydraulic cylinder. The purpose of the one-way balance valve is to prevent the car pocket from falling rapidly due to the weight loss of the vehicle body or the unloading of the load during the falling process. Drop and vibration of the vehicle. There is one (9) one-way valves in each reversing valve hydraulic oil circuit, the purpose is to prevent hydraulic oil backflow during crop loading and unloading.

Description

A hydraulic system in which a hydraulic motor is controlled by two reversing valves to complete different working conditions

technical field

The utility model relates to a hydraulic motor which is independently controlled by two reversing valves under different working conditions to complete different operations. more stable.

Background technique

my country is a large agricultural country, and agriculture is the largest industry in our country. With the continuous improvement of agricultural modernization and labor costs, it is imperative to vigorously develop and improve agricultural machinery. In view of the complex operating environment of the machine, the operation of the equipment should be stable It is flexible to adapt to various complex working environments. The design of the hydraulic system makes the equipment run smoothly and operate flexibly.

Contents of the invention

The purpose of this utility model is a hydraulic motor controlled by two reversing valves under different working conditions to complete the hydraulic system of different operations, so that the operation of the equipment is simple and the operation is stable. The utility model is composed of plane thread (1) oil tank (2) oil filter (3) hydraulic pump (4) overflow valve (5) multi-way reversing valve (6) hydraulic cylinder (7) one-way balance valve (8) ) Hydraulic motor (9) consists of one-way valve. (2) The oil filter and (3) hydraulic pump (4) relief valve are connected in series through the oil pipe. The oil filter filters the hydraulic oil to prevent the blockage of the hydraulic pump. The relief valve acts as a safety protection: when the system is working normally, the valve is closed . Only when the load exceeds the specified limit (the system pressure exceeds the set pressure), the overflow is opened to perform overload protection, so that the system pressure will not increase. (5) The multi-way reversing valve consists of three three-position six-way reversing valves 5-1, 5-2, and 5-3 that cannot automatically return to their positions and three-position six-way reversing valves 5-4 and 5-5 that can automatically return to their positions. The six three-position six-way reversing valves are connected in parallel through oil pipes. This connection can realize that each reversing valve can work independently without interfering with each other. The 5-1 and 5-5 reversing valves are connected in series with the 8-1 hydraulic motor, and the 5-2 and 5-6 reversing valves are connected in series with the 8-2 hydraulic motor, so that one motor is controlled by two reversing valves. 5-3 The reversing valve is connected in series with (7) the one-way balance valve (6) hydraulic cylinder. The purpose of the one-way balance valve is to prevent the vehicle pocket from rapidly falling due to the weight loss of the vehicle body or the unloading of the load during the falling process. Drop and vibration of the vehicle. There is one (9) check valves in each reversing valve hydraulic oil circuit, the purpose is to prevent hydraulic oil backflow during crop loading and unloading.

Description of drawings

Fig. 1 is a schematic diagram of the hydraulic drive system of a small centralized mining tractor;

In the figure 1: 1 fuel tank 2 oil filter 3 hydraulic pump 4 overflow valve 5 multi-way reversing valve 6 hydraulic cylinder 7 one-way balance valve 8 hydraulic motor 9 one-way valve

detailed description

Below in conjunction with accompanying drawing 1 the embodiment of the present utility model is further described:

The implementation is as follows: mainly by (1) oil tank (2) oil filter (3) hydraulic pump (4) overflow valve (5) multi-way reversing valve (6) hydraulic cylinder (7) one-way balance valve (8) The hydraulic motor (9) is composed of a one-way valve. When the vehicle is moving forward, push the 5-1 and 5-2 manual reversing valves simultaneously.

Left wheel oil inlet circuit: fuel tank 1→oil filter 2→hydraulic pump 3→one-way valve 9-1→reversing valve 5-1 left position→hydraulic motor 8-1

Left circulation oil circuit: hydraulic motor 8-1→reversing valve 5-1→oil tank 1

Right wheel oil inlet circuit: fuel tank 1→oil filter 2→hydraulic pump→one-way valve 9-1→reversing valve 5-1 middle position→one-way valve 9-2→reversing valve 5-2 left position→hydraulic Motor 8-2

Right circulation oil circuit: hydraulic motor 8-2→reversing valve 5-2→oil tank 1. When the vehicle reverses, push the 5-1 and 5-2 manual reversing valves simultaneously.

Left wheel oil inlet circuit: oil tank 1→oil filter 2→hydraulic pump 3→one-way valve 9-1→reversing valve 5-1 right position→hydraulic motor 8-1

Left circulation oil circuit: hydraulic motor 8-1→reversing valve 5-1→oil tank 1

Right wheel oil inlet circuit: fuel tank 1→oil filter 2→hydraulic pump→one-way valve 9-1→reversing valve 5-1 middle position→one-way valve 9-2→reversing valve 5-2 right position→hydraulic Motor 8-2

Right circulation oil circuit: hydraulic motor 8-2→reversing valve 5-2→oil tank 1.

Push the 5-3 manual reversing valve, and the car pocket rises. Oil inlet circuit: oil tank 1→oil filter 2→one-way valve 9-1→central position of reversing valve 5-1→one-way valve 9-2→central position of reversing valve 5-2→one-way valve 9-3 → Reversing valve 5-3 left position → hydraulic cylinder 6 rodless cavity

Oil return circuit: Hydraulic cylinder 6 has a rod cavity → one-way balance valve 7 → reversing valve 5-3 → oil tank 1 When the vehicle changes the driving direction and turns left, push the manual reversing valve 5-1 and 5-2 at the same time It is in the middle position, and then promotes the reversing valve 5-4 to make it in the right position.

Oil inlet circuit: oil tank 1→oil filter 2→one-way valve 9-1→central position of reversing valve 5-1→one-way valve 9-2→central position of reversing valve 5-2→one-way valve 9-3 → Reversing valve 5-3 right middle position → Check valve 5-4 → Reversing valve 5-4 middle position → Check valve 5-5 → Reversing valve 5-5 left position → Hydraulic motor 8-2

Oil return circuit: hydraulic motor 8-2→reversing valve 5-5→oil tank 1. When vehicle turns left, promote manual reversing valve 5-1 and 5-2 simultaneously and make it be in middle position, then promote reversing valve 5-4, make it be in left position. Oil inlet circuit: oil tank 1→oil filter 2→one-way valve 9-1→central position of reversing valve 5-1→one-way valve 9-2→central position of reversing valve 5-2→one-way valve 9-3 → Reversing valve 5-3 right middle position → Check valve 5-4 → Reversing valve 5-4 left position → Hydraulic motor 8-1 Oil return circuit: Hydraulic motor 8-1 → Reversing valve 5-4 → Fuel tank 1.

Claims (2)

1. an a kind of hydraulic motor is completed the hydraulic system of different operating modes by two reversal valve controls, it is characterised in that：Fuel tank (1), oil filter (2), hydraulic pump (3), overflow valve (4), multiple directional control valve (5), hydraulic cylinder (6), one-way balance valve (7), hydraulic pressure Motor (8), check valve (9), oil filter (2) are connected with hydraulic pump (3), overflow valve (4) by oil pipe, multiple directional control valve (5) by The logical commutation of three six-way transfer valves (5-1), (5-2), (5-3) three three six-way transfer valves for being unable to self-return and three six Valve (5-4), (5-5) can self-return three six-way transfer valves composition, five (three six-way transfer valves (5-1), (5-2), (5-3), (5-4), (5-5)) three six-way transfer valves are in parallel by oil pipe, and three six-way transfer valves (5-1) and three six, which are led to, to be changed Connected to valve (5-5) with hydraulic motor (8-1), three six-way transfer valves (5-2) and three six-way transfer valves (5-4) and hydraulic pressure horse Connected up to (8-2), a motor is controlled by two reversal valves, three six-way transfer valves (5-3) and one-way balance valve (7), hydraulic pressure Cylinder (6) is connected, and has a check valve (9) in each reversal valve hydraulic circuit.

By two reversal valves, individually 2. difference is completed in control to an a kind of motor according to claim 1 under different operating modes The hydraulic system of operation, it is characterized in that：Five multiple directional control valves (5) are in parallel, and hydraulic motor (8-1) is by three six-way transfer valves (5-1) and three six-way transfer valve (5-4) controls, hydraulic motor (8-2) are changed by three six-way transfer valves (5-2) and three six are logical Controlled to valve (5-5), vehicle wheel when changing travel direction is individually changed by three six-way transfer valves (5-4) or three six are logical Controlled to valve (5-5).