Hydraulic valve block for forklift braking system
A brake system and hydraulic valve technology, which is applied in the field of hydraulic valve blocks, can solve problems such as affecting the braking effect of forklifts, complex and messy pipeline layout, and excessive back pressure of cooling oil circuits, so as to avoid excessive back pressure of cooling oil circuits. Large, clean and beautiful appearance, the effect of reducing leakage points
Inactive Publication Date: 2018-11-27
HANGCHA GRP
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problems that there are many rubber hoses and joints in the wet drive axle, various types, complicated and messy pipeline layout, large oil hydraulic loss and excessive back pressure of the cooling oil circuit, which affect the braking effect of the forklift, and provide A hydraulic valve block for the brake system of forklifts, which can clearly and concisely connect various oil circuits, effectively avoid the problem of excessive back pressure in the cooling oil circuit of the wet drive axle, and ensure the safety and reliability of the forklift brake system
Method used
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Embodiment 1
[0030] in such as figure 1 figure 2 In the shown embodiment 1, a hydraulic valve block for a forklift braking system includes a valve body 16, four oil passages and a plurality of oil ports communicated with the oil passages are arranged on the valve body, and the oil passages include Service brake oil passage 17 (see Figure 4 Figure 7 ), drive axle cooling oil return oil passage 18 and drive axle cooling oil inlet oil passage 19, the cross-sectional area of the drive axle cooling oil return oil passage is greater than the cross-sectional area of the drive axle cooling oil inlet oil passage, and the drive axle cooling oil inlet The cross-sectional area of the oil oil passage is greater than that of the service brake oil passage; the drive axle cooling oil inlet oil passage is also provided with a drive axle cooling oil inlet bypass oil passage 20, and the service brake oil passage, drive axle cooling The centerlines of the oil inlet oil passage and the drive axle c...
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The invention discloses a hydraulic valve block for a forklift braking system. The hydraulic valve block comprises a valve body, and the valve body is provided with a service braking oil channel, a driving-axle cooling oil inlet channel, a driving-axle cooling oil returning channel and a driving-axle cooling oil inlet bypass oil channel, wherein the service braking oil channel is used for flowingof service braking oil; the driving-axle cooling oil returning channel is used for oil returning of a wet-driving-axle cooling circulating oil; the driving-axle cooling oil inlet channel is used for oil inlet of the wet-type driving-axle cooling oil; the driving-axle cooling oil inlet bypass oil channel is used for bypassing when cooling inlet oil of a wet driving axle generates backpressure. According to the hydraulic valve block for the forklift braking system, all the oil ways of the forklift braking system can be clearly and compactly connected, the problem that the backpressure of the cooling oil ways of the wet driving axle is over high is effectively solved, the safety and the reliability of the forklift braking system are guaranteed, and the hydraulic valve block has the high practical value.
Description
technical field [0001] The invention relates to the technical field of braking, in particular to a hydraulic valve block used in a forklift braking system. Background technique [0002] At present, due to the advantages of simple appearance, good wear resistance, and good heat dissipation, the wet drive axle for forklifts has been widely used in forklifts. When the wet brake axle is in use, it needs to meet the oil in and out of the cooling oil and brake fluid. Therefore, there should be at least 6 oil ports at both ends of the wet drive axle, which increases the pressure of the wet drive axle virtually. The complexity of the upper pipeline layout; in addition, because the pressure levels of the cooling fluid and the brake fluid are different, this further increases the complexity of the pipeline connection arrangement of the drive axle. Usually, multiple three-way joints can be used to divide one oil line into two, or combine two oil lines into one to meet the oil line req...
Claims
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Login to View More IPC IPC(8): B60T13/12B60T15/00
CPCB60T13/12B60T15/00
Inventor 宋涛李婧王建超
Owner HANGCHA GRP