Hydraulic cylinder stop valve device and hydraulic cylinder fitted with device
A hydraulic cylinder and stop valve technology, applied in the field of hydraulic cylinders, can solve the problem of high cost
Inactive Publication Date: 2015-07-15
HUBEI JIANGSHAN HYDRAULIC TECH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0002] At present, the working stroke of the hydraulic cylinder is generally adjusted by a displacement sensor or a stroke switch, and the high-pressure shock of the cylinder is absorbed by a special buffer device. The two functions need to be realized by designing separate parts, and electrical control is also required to realize it. The cost is relatively high
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Embodiment Construction
[0026] figure 1 , 2 , 3, the hydraulic oil cylinder of the present invention includes a cylinder barrel (27), a piston rod (7), a piston (26), and also includes a shut-off valve device, the shut-off valve device is mainly composed of a valve block (8), a valve rod (9) , guide sleeve (10), dust cover (21), limit baffle (6) installed on the piston rod (7) and seals everywhere. The valve block (8) is welded on the cylinder barrel (27), the guide sleeve (10) is pressed tightly with the dust cover (21), and the dust cover (21) is finally fastened to the valve block (8) with bolts (22) . Oil port 2 (3) and oil passage (5) are set on the valve block (8), oil port 2 (3) is connected to the rodless chamber (1) through oil passage (5), and oil port 1 (4) is welded on On the cylinder (27), oil port one (4) is connected with the rod chamber (2) through the oil passage (28). There is a positioning groove (29) on the valve block (8), the valve stem (9) is installed in the positioning gr...
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Abstract
The invention discloses a hydraulic cylinder stop valve device and a hydraulic cylinder fitted with the device. The stop valve device comprises a valve block and a limiting baffle plate, wherein the valve block is positioned on a hydraulic cylinder barrel; the valve block is provided with an oil port II for working together with an oil port I communicated with a rod cavity in the hydraulic cylinder barrel, a positioning groove, and an oil duct for being communicated with a rodless cavity respectively; the oil port II is communicated with the oil duct through a positioning groove, thereby forming a hydraulic oil inlet / outlet channel of the hydraulic cylinder; a valve rod for opening / closing the hydraulic oil channel is arranged on the positioning groove through a guide sleeve; the limiting baffle plate is arranged on a hydraulic cylinder piston rod and is used for pushing the valve rod to close the hydraulic oil channel. The working stroke of the oil cylinder can be changed by adjusting the position of the limiting baffle plate; meanwhile, the piston rod is prevented from being collided onto an oil cylinder when the piston rod is about to run onto a stroke terminal. The dual actions of adjusting the working stroke of the oil cylinder and avoiding high-pressure impact can be achieved synchronously, and the machining cost is lowered by adjusting with a mechanical device.
Description
technical field [0001] The invention relates to a hydraulic cylinder cut-off valve device and a hydraulic cylinder equipped with the device, belonging to the technical field of hydraulic cylinders. Background technique [0002] At present, the working stroke of the hydraulic cylinder is generally adjusted by a displacement sensor or a stroke switch, and the high-pressure shock of the cylinder is absorbed by a special buffer device. The two functions need to be realized by designing separate parts, and electrical control is also required to realize it, which is costly. [0003] The shut-off valve device of the hydraulic cylinder designed by the present invention can simultaneously realize the dual functions of adjustable working stroke of the oil cylinder and avoiding high-pressure impact, and can be regulated by a mechanical device to reduce processing cost. Contents of the invention [0004] The purpose of the present invention is to overcome the above-mentioned deficienc...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F15B13/04F15B15/24F15B15/22
CPCF15B13/0402F15B15/22F15B15/24F15B2215/30
Inventor 姚泽功余修浩郝建平杨万虎李泽
Owner HUBEI JIANGSHAN HYDRAULIC TECH