Power-assisted brake mechanism for four-wheel drive

Abstract

The utility model discloses a power-assisted brake mechanism for four-wheel drive, which comprises a power-assisted pump, a walking pump and an oil tank, the power-assisted pump is respectively led to control valves of four wheel brakes through four oil pipes, the power-assisted pump, the walking pump and the oil tank are connected in series, two ends of the power-assisted pump are respectively connected with the oil tank and the walking pump through the oil pipes, and the oil tank is connected with the walking pump through the oil pipes. The booster pump and the walking pump are both hydraulic pumps, in an original driving system, the walking pump draws hydraulic oil from an oil tank to provide power for the walking mechanism, and in the utility model, the booster pump draws the hydraulic oil from an oil way of the original walking mechanism to form high pressure to provide assistance for the work of the brake.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power -assisted braking mechanism for four -wheel drive. BACKGROUND

[0002] Corn is our country's main food crops, and the planting area is about 300 million mu. In recent years, with the continuous promotion of the state agricultural machinery subsidy policy, the corn machine harvesting rate is also increasing year by year, and the labor intensity is smaller and smaller. In order to meet the needs of harvesting corn in hilly and mountainous areas, the company develops a mountain wheel type corn machine, which uses mechanical four-wheel drive to meet various adverse conditions, and the braking requirement is also relatively higher.

[0003] Because it is a four-wheel drive model, there are four brakes in front and back, and the capacity is required to be large, and the power of the foot stepping is also required to be large, so people are easy to feel fatigue and effort, not only affecting the normal braking distance of the corn machine, but also making the driver feel fatigue. INVENTION CONTENTS

[0004] The utility model aims at solving the above technical deficiencies, and provides a power -assisted braking mechanism for four -wheel drive.

[0005] A power -assisted braking mechanism for four -wheel drive, including power -assisted pump, walking pump, oil tank, the power -assisted pump is connected to the control valve of four wheel brakes through four oil pipes respectively, the power -assisted pump, walking pump, oil tank are connected in series, and the two ends of the power -assisted pump are connected with oil tank and walking pump through oil pipe, the power -assisted pump and walking pump are all hydraulic pumps.

[0006] Further, the walking pump and oil pipe, power -assisted pump and oil pipe are connected through quick -coupling.

[0007] Further, the oil pipe is copper pipe.

[0008] Further, pressure sensor is arranged in the oil pipe.

[0009] Further, the oil pipe is provided with an overflow valve.

[0010] Further, the walking pump is connected with the filter.

[0011] Beneficial effects: compared with the prior art, the power -assisted pump draws hydraulic oil from the original oil circuit of the driving walking mechanism, forms high pressure hydraulic oil, and is connected to the control valve of the brake, so as to provide power assistance, reduce the working pressure of the driver, and make the driving more safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of a power -assisted braking mechanism for four -wheel drive.

[0013] In the figure, 1, walking pump, 2, booster pump, 3, oil pipe, 4, brake. DETAILED DESCRIPTION

[0014] In order to deepen the understanding of the utility model, the utility model will be further described in the following combined with examples and drawings, the examples are only used to explain the utility model, and do not constitute the limitation of the protection scope of the utility model.

[0015] As Figure 1 Indicated, walking pump 1, booster pump 2, oil pipe 3, brake 4;

[0016] A booster brake mechanism for four-wheel drive, comprising booster pump 2, walking pump 1, oil tank, the booster pump 2 is connected to the control valve of four-wheel brake 4 through four oil pipes 3 respectively, the booster pump 2, walking pump 1, oil tank are connected in series, both ends of the booster pump 2 are connected with the oil tank and walking pump 1 through oil pipe 3 respectively, the booster pump 2 and walking pump 1 are all hydraulic pumps.

[0017] In the present instance, the walking pump 1 and oil pipe 3, booster pump 2 and oil pipe 3 are connected through quick couplings.

[0018] In the present instance, the oil pipe 3 is copper pipe.

[0019] In the present instance, pressure sensor is arranged in the oil pipe 3.

[0020] In the present instance, overflow valve is arranged in the oil pipe 3.

[0021] In the present instance, walking pump 1 is connected with filter.

[0022] Working principle: in the original drive system, walking pump 1 draws hydraulic oil from the oil tank to provide power for walking mechanism, in the utility model, booster pump 2 draws hydraulic oil from the original walking mechanism oil circuit to form high pressure, and provides booster for the work of brake 4.

[0023] The above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A power brake mechanism for four-wheel drive vehicles, characterized by comprising: The utility model relates to a kind of hydraulic brake system, including booster pump, walking pump, oil tank, the booster pump be connected with the control valve of four wheel brakes by four oil pipes respectively, the booster pump, walking pump, oil tank are connected in series, the two ends of booster pump are connected with oil tank and walking pump by oil pipe respectively, the booster pump and walking pump are all hydraulic pump.

2. A power assisted braking mechanism for four wheel drive vehicles as claimed in claim 1 wherein, The walking pump and the oil pipe, the booster pump and the oil pipe are connected by quick coupler.

3. The power assisted braking mechanism for four-wheel drive as claimed in claim 1 wherein, The oil pipe is copper pipe.

4. The power assisted braking mechanism for four-wheel drive as claimed in claim 1 wherein, Pressure sensor is arranged in the oil pipe.

5. The power brake mechanism for four-wheel drive according to claim 1, wherein Pressure relief valve is arranged in the oil pipe.

6. A power brake mechanism for four-wheel drive vehicles as defined in claim 1, wherein The walking pump is connected with the filter.

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