Two-way cartridge vibration control valve
A technology of vibration control and cartridge valve, which is applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of component structure and hydraulic system complexity, and achieve shortened vibration stop time, simple hydraulic system, and improved The effect of oil permeability
Active Publication Date: 2016-08-10
PERMCOTIANJINHYDRAULIC INC
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Problems solved by technology
[0004] For this reason, the technical problem to be solved by the present invention is that the two-way plug-in vibration control valve in the prior art has many components, and the structure of the components and the hydraulic system are complicated, so as to provide a valve with fewer components and a simpler system. Two-way cartridge vibration control valve
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[0031] In the following, the present invention will be further described by using the following embodiments in conjunction with the accompanying drawings.
[0032] Such as Figure 1-3 As shown, a two-way cartridge type vibration control valve in this embodiment includes:
[0033] The valve body is formed with a plug-in cavity, an oil inlet port P connected to the oil outlet of the hydraulic pump, an oil return port T connected to the oil tank of the hydraulic system, and the first oil ports at both ends of the hydraulic motor. The first working port A and the second working port B connected by the port and the second oil port;
[0034] The main circuit, the main circuit is inserted in the insertion cavity of the valve body, including a pilot direction control circuit composed of four two-way cartridge valves and a three-position four-way electromagnetic reversing valve, wherein
[0035] The first two-way cartridge valve 1 is arranged between the oil inlet port P and the firs...
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The invention discloses a two-way plug-in vibration control valve, which includes a valve body, and a direction control sub-circuit, a vibration stop sub-circuit and a safety sub-circuit composed of four two-way plug-in valves are inserted in the valve body. , the invention reduces the hydraulic impact of the road roller when it starts to vibrate, reduces the peak pressure of the hydraulic system, improves the reliability and durability of the hydraulic components, shortens the vibration stop time, and improves the operation quality of the road roller and the comfort of the driver Compared with the prior art, a set of two-way cartridge valve and its control cover assembly is saved, the volume is reduced, the hydraulic system of the present invention is simpler, maintenance and maintenance are more convenient, and the production cost is lower. At the same time, in the present invention, there is also a branch oil passage connected from the oil inlet port to the first two-way cartridge valve and the fourth two-way cartridge valve and the oil return port. Adjustable throttling valve, the vibration frequency of the roller can be adjusted when needed.
Description
technical field [0001] The invention relates to a two-way plug-in vibration control valve, in particular to a two-way plug-in vibration control valve for controlling the operation of a hydraulic motor on a vibratory road roller. Background technique [0002] At present, the vibrating device of domestic single-drum vibratory roller adopts the open hydraulic transmission and control system with constant pump (mostly gear pump) as the power source, which is relatively common. When the vibratory roller starts to vibrate, its vibrating hydraulic motor starts with load, resulting in a high-pressure shock to the hydraulic system during the start-up stage of the roller. This instantaneous high pressure will give components such as pumps, valves, motors and pipelines in the hydraulic system Bring bad noise, cause damage to hydraulic components and loose pipeline connections, resulting in leakage and environmental pollution. According to statistical analysis, more than 60% of the fail...
Claims
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IPC IPC(8): F15B13/02
Inventor 郭熛邰小琴冯鹏王育春
Owner PERMCOTIANJINHYDRAULIC INC