Gantry lifter serial connection speed conversion loop
A technology of speed conversion and lifting machine, which is applied in the direction of mechanical equipment, fluid pressure actuators, servo motors, etc., can solve the problem of different supply, and achieve the effect of simple structure, convenient operation and reasonable design
Inactive Publication Date: 2014-12-24
芜湖高昌液压机电技术有限公司
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Problems solved by technology
[0003] Aiming at the problem that the existing gantry lift cannot provide different feed speeds according to different operating requirements during the working process, resulting in inconvenient operation, the present invention provides a series speed conversion circuit of the gantry lift. Two speed regulating valves are connected in series to realize the adjustment of feed speed
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Embodiment 1
[0016] Such as figure 1 As shown, the gantry lift series speed conversion circuit includes oil tank 1, hydraulic pump 2, overflow valve 3, reversing valve A4, hydraulic cylinder 5, reversing valve B6, reversing valve C7, speed regulating valve A8, speed regulating valve Valve B9, the inlet oil pipe of the hydraulic pump 2 is connected to the oil tank 1, and the outlet oil pipe is connected to the overflow valve 3 and the reversing valve A4 respectively, and the oil return pipe of the overflow valve 3 and the reversing valve A4 is connected to the oil tank 1 , the A oil port of the reversing valve A4 is connected in series with the speed regulating valve A8 and the speed regulating valve B9, and then connected with the hydraulic cylinder 5, and its B oil port is directly connected with the hydraulic cylinder 5 through the oil pipe, and the described reversing valve One end of B6 is connected to the hydraulic cylinder 5, and the other end is connected to the connecting pipeline ...
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The invention discloses a gantry lifter serial connection speed conversion loop and belongs to the field of hydraulic transmission. The gantry lifter serial connection speed conversion loop comprises an oil tank, a hydraulic pump, an overflow valve, a change valve A, a hydraulic cylinder, a change valve B, a change valve C, a speed-regulating valve A and a speed-regulating valve B, wherein oil return pipes of the overflow valve and the change valve A are connected with the oil tank; an oil port A of the change valve A is sequentially connected with the speed-regulating valve A and a speed-regulating valve B in series and then is connected with the hydraulic cylinder, and an oil port B of the change valve A is directly connected with the hydraulic cylinder by virtue of the oil pipe; one end of the change valve B is connected with the hydraulic cylinder, and the other end of the change valve B is connected onto a connecting pipeline between the speed-regulating valve A and the speed-regulating valve B; one end of the change valve C is connected with the hydraulic cylinder, and the other end of the change valve C is connected with an oil port A of the change valve A. The gantry lifter serial connection speed conversion loop can be used for solving the problem of operation inconvenience caused by incapability of providing different feeding speeds according to different operation requirements in a working process of an existing gantry lifter and has the advantage of simple structure, reasonable design and easiness for manufacturing.
Description
technical field [0001] The invention belongs to the field of hydraulic transmission, and more specifically relates to a speed conversion circuit of a hydraulic system of a lift. Background technique [0002] With the continuous development of the automobile industry, automobile repair and maintenance has gradually become a new industry. Among them, the lift, as an important tool in the process of car repair and maintenance, has also developed rapidly. The lift is mainly to raise the car from a safe height to another safe height, so as to facilitate manual operation and maintenance. At present, there are many types of lifts, which can be divided into mechanical transmission and hydraulic transmission according to the transmission mode. The mechanical transmission structure is simple and the price is cheap, but the lifting weight is limited, and the lead screw or working nut is prone to slipping, which poses a great safety hazard. The hydraulic transmission lift has good sa...
Claims
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IPC IPC(8): F15B13/02F15B11/02
Inventor 高昌六
Owner 芜湖高昌液压机电技术有限公司