Forklift hydraulic system matched with multi-functional wet brakes

A wet brake and hydraulic system technology, applied in the direction of brakes, brake transmissions, hydraulic brake transmissions, etc., can solve the problem that small tonnage forklifts cannot meet the oil source requirements of multi-functional wet brakes, and achieve rapid release and simplified management. Road system, accurate manipulation effect

Active Publication Date: 2011-07-13
ANHUI HELI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that small-tonnage forklifts cannot meet the oil source requirements of multi-functional wet brakes, the present invention provides a forklift hydraulic system matching multi-functional wet brakes

Method used

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  • Forklift hydraulic system matched with multi-functional wet brakes
  • Forklift hydraulic system matched with multi-functional wet brakes
  • Forklift hydraulic system matched with multi-functional wet brakes

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Embodiment

[0020] see figure 1 The forklift hydraulic system matching the multifunctional wet brake includes an oil pump 1, a priority diverter valve 2, an integrated valve block 6, an accumulator 7, a power brake valve 8, a parking brake 5, a service brake 9 and a fuel tank 10, each of which The parts are connected by oil pipes.

[0021] The oil outlet of the oil pump 1 communicates with the P port of the priority diverter valve 2. The priority diverter valve 2 has one inlet and three outlets, of which the first outlet is the BF port, which is divided into two routes through the BF port, and one route is connected to the integrated valve block 6. The P1 port is connected, and the other is connected with the Pz port of the dynamic brake valve 8; the second outlet is the EF port, and the EF port is connected with the forklift working device oil circuit 3; the third outlet is the CF port, and the CF port is also divided into two routes. One way communicates with the steering system 4 of t...

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Abstract

The invention relates to a forklift hydraulic system matched with multi-functional wet brakes. The system comprises an oil pump, a preferred diverter valve, an integrated valve block, an energy accumulator, a power brake valve, a parking brake, a service brake and an oil tank, wherein the oil outlet of the oil pump is communicated with a port P of the preferred diverter valve; the preferred diverter valve is provided with an inlet and three outlets, wherein the first outlet is divided into two paths, one path is communicated with a port P1 of the integrated valve block, and the other path is communicated with a port Pz of the power brake valve; the second outlet is communicated with an oil circuit of a forklift operating device; the third outlet is divided into two paths, one path is communicated with a forklift steering system, and the other path is communicated with a port P2 of the integrated valve block; and the integrated valve block comprises a parking brake electromagnetic valve, a one-way valve, a lock / release electromagnetic valve, a one-way valve, and the like. In the invention, the preferred diverter valve is used for diverting, and the problem of oil sources for wet bridge parking braking and service braking can be solved without providing another set of oil source, so that an operating hydraulic system and a brake system are integrated into an organic whole, thereby simplifying the piping system and reducing the cost.

Description

technical field [0001] The invention belongs to a hydraulic system of a forklift, in particular to a hydraulic system of a forklift matched with a multifunctional wet brake. Background technique [0002] For the multi-function wet brake that integrates the functions of parking brake and service brake, the pressure required for the parking brake is small, and the pressure required for the service brake is high, which requires two different oil sources, but for small Tonnage forklifts are limited by the number of gearboxes or engine (motor) PTO ports, which restricts the number of oil pumps, so they cannot meet the oil source requirements of multi-functional wet brakes. It is necessary to find a way to solve the oil source problem in the existing hydraulic system. In addition, when the engine or solenoid valve cannot work due to a fault, in order to facilitate the user to release the brake, start or tow the forklift, an emergency release brake device should be installed in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T11/16B60T11/18B60T13/68
Inventor 温跃清田原周齐齐
Owner ANHUI HELI CO LTD
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