Manual emergency operation device and method for internal-expansion locking cylinder
A locking oil cylinder and emergency operation technology, which is applied in the direction of fluid pressure actuating devices, mechanical equipment, etc., can solve the problems of no related products, no internal expansion locking oil cylinder manual emergency operation device reported in literature, time-consuming and labor-intensive problems, etc.
Inactive Publication Date: 2014-07-02
SOUTHEAST UNIV
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Problems solved by technology
[0005] The internal expansion locking oil cylinder has matured in technology and is widely used in radar vehicle leveling and other fields. However, there are no literature reports on the manual emergency operation device of the internal expansion locking oil cylinder, and there are no related products. The commonly used emergency method It is time-consuming and labor-intensive to remove the locking cylinder directly
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[0036] The following describes the patent of the present invention in further detail with reference to the drawings and embodiments:
[0037] Such as figure 1 As shown, the manual emergency operating device for the internal expansion locking cylinder includes a relief shut-off valve 1, a first manual pump 2, an isolation shut-off valve 3, a first oil port 4, an accumulator 5, a pressure gauge 6, a second Oil port 7, third port 8, hydraulic pipeline 9, fourth port 10, fifth port 11, second manual pump 12, one-way valve 13, three-position four-way solenoid switch with manual push rod Direction valve 14, sixth oil port 15, seventh oil port 16.
[0038] The oil outlet of the first manual pump 2, the first oil port 4, the accumulator 5, the pressure gauge 6, an oil port of the isolation shut-off valve 3, and an oil port of the relief shut-off valve 1 are interconnected by hydraulic lines ;
[0039] The oil suction port of the first manual pump 2, the other oil port of the drain stop val...
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The invention discloses a manual emergency operation device and method for an internal-expansion locking cylinder. The device comprises a relief stop valve (1), a first manual pump (2), an isolating stop valve (3), a first oil port (4), an accumulator (5), a pressure meter (6), a second oil port (7), a third oil port (8), a hydraulic pipeline (9), a fourth oil port (10), a fifth oil port (11), a second manual pump (12), a one-way valve (13),a three-position four-way electromagnetic reversing valve (14), a sixth oil port (15), and a seventh oil port (16). An oil outlet of the first manual pump (2), the first oil port (4), the accumulator (5), the pressure meter (6), an oil port of the isolating stop valve (3), and an oil port of the relief stop valve (1) are communicated in pairs through a hydraulic pipeline. By the use of the manual emergency operation device and method, a piston rod of the internal-expansion locking cylinder can extend out or retract for emergency.
Description
Technical field [0001] The invention relates to a manual emergency operating device for an internal expansion type locking oil cylinder. When the hydraulic system loses power, the device can be used to complete the manual emergency extension or retraction of the piston of the inner expansion locking cylinder. Background technique [0002] When the piston rod of a hydraulic oil cylinder extends and bears a load, the piston rod is generally required to maintain its position within a certain period of time and cannot be retracted. A hydraulic lock circuit is usually used to achieve hydraulic locking of the piston rod. Due to the inevitable internal leakage, the conventional hydraulic lock circuit cannot guarantee the position accuracy of the piston rod of the hydraulic cylinder under long-term operation. The locking cylinder is a special type of cylinder that uses a mechanical locking method to lock the cylinder barrel and the piston (or piston rod). Due to the mechanical locking m...
Claims
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IPC IPC(8): F15B15/20F15B1/02
Inventor 孙利生
Owner SOUTHEAST UNIV