Automatic oil return device for vehicular hydraulic systems and control circuit thereof
A hydraulic system, automatic technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, servo motors, etc., can solve the problems of reduced sealing effect, pressure oil leakage, oil leakage into the car, etc., to achieve structural Compact, easy to retrofit, small installation space
Inactive Publication Date: 2014-09-10
BEIJING NORTH VEHICLE GROUP CORP
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- Description
- Claims
- Application Information
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Problems solved by technology
When the oil cylinder works for a long time, it will be deformed by the radial force, resulting in a decrease in the sealing effect. When the oil cylinder works for a long time, there will be pressure oil leaking from the O-ring, and finally the leaked oil will leak through the vent joint to the inside the car
Method used
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Embodiment Construction
[0036] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:
[0037] figure 1 It is the position diagram of the large brake oil cylinder and the small brake oil cylinder which are prone to oil leakage in the existing vehicles. The large brake oil cylinder 1 and the small brake oil cylinder 2 of the hydraulic system of the existing vehicle are used for steering and braking manipulation, and its effect is to separate the steering clutch and brake the large and small brake bands.
[0038] figure 2 for figure 1 Structural diagrams of large brake cylinders and small brake cylinders in . The large brake cylinder 1 and the small brake cylinder 2 have the same structure, but differ in size. Both the large brake cylinder 1 and the small brake cylinder 2 are single-acting cylinders, which are returned by a spring 4 and sealed by an O-ring 3, and are equipped with a ventilation joint with a ventilation hole 6 to en...
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The invention relates to an automatic oil return device for vehicular hydraulic systems and a control circuit thereof. The automatic oil return device for vehicular hydraulic systems comprises a pump station, at least one large-sized brake cylinder, at least one small-sized brake cylinder, a breather, a relay, a liquid level sensor and a reflow pipeline; an oil return connector is disposed at the top of the pump station and is communicated with the large-sized brake cylinders and the small-sized brake cylinders respectively through oil pipes; the top of the pump station is fixedly connected with the breather; the pump station comprises an oil collection tank; the liquid level sensor is disposed inside the oil collection tank and is connected with the relay; the pump station is communicated with the reflow pipeline of a hydraulic system through an oil return pipeline. By the use of the automatic oil return device, the problem that the existing vehicular brake cylinder leaks oil is solved thoroughly; meanwhile, the pump station of the automatic oil return device is an integrated mechanism composed of an oil tank, a motor, a valve and a pump, the automatic oil return device is compact in structure and requires small installation space, refitting of existing vehicles is facilitated, and the original performance of the vehicles is unaffected.
Description
technical field [0001] The invention belongs to the technical field of vehicle machinery and relates to an oil return device, in particular to an automatic oil return device used in a vehicle hydraulic system and a control circuit thereof. Background technique [0002] At present, the oil leakage problem frequently occurs in the brake cylinder of automobile chassis in our country. The brake cylinder is used for steering and braking manipulation, and its function is to separate the steering clutch and brake the large and small brake bands. The oil cylinder is a single-acting oil cylinder, with spring return, O-ring seal, and a vent hole to ensure that the oil-free side communicates with the atmosphere. During installation, one end of the cylinder body is hinged on the car body. During the working process of the oil cylinder, the piston rod pushes the pull arm to move. In addition to the piston extending action, the oil cylinder rotates around the hinge point at the same time....
Claims
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Login to View More IPC IPC(8): F15B11/00F15B21/08
Inventor 许德林胡晓捷黄国良康铁宇陈发伟杨桦
Owner BEIJING NORTH VEHICLE GROUP CORP