Slow unloading hydraulic cylinder
A technology of hydraulic cylinders and cylinder blocks, which is applied in the direction of fluid pressure actuation devices, etc., and can solve problems such as poor safety and poor adaptability
Inactive Publication Date: 2021-07-06
韩锡楼
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Problems solved by technology
[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a slow unloading hydraulic cylinder, which effectively solves the problems of poor adaptability of the return speed of the hydraulic cylinder to the load and poor safety
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[0015] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0016] Depend on Figure 1 to Figure 3 Given, the present invention comprises cylinder body 1, and cylinder body 1 is provided with expansion chamber 2 and piston 3 chambers, and expansion chamber 2 is positioned at the top of piston 3 chambers, and a piston 3 that can move up and down is installed in piston 3 chambers, and piston 3 will The piston chamber 3 is divided into an upper piston chamber 4 and a lower piston chamber 5. A first passage 6 and a second passage 7 are communicated between the upper piston chamber 4 and the expansion chamber 2. The first passage 6 is equipped with a first one-way valve 8. The liquid in the expansion chamber 2 can flow into the upper piston chamber 4 through the first one-way valve 8, the upper end surface of the piston 3 is fixed with a piston 3 rod, and the upper end of the piston 3...
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The invention relates to a slow unloading hydraulic cylinder which effectively solves the problems that the self-adaptability of the return speed of a hydraulic cylinder along with a load is poor, and the safety is poor. According to the technical scheme, a cylinder body is included, an expansion cavity and a piston cavity are formed in the cylinder body, a piston capable of moving up and down is installed in the piston cavity, the piston cavity is divided into an upper piston cavity and a lower piston cavity through the piston, a first channel and a second channel are communicated between the upper piston cavity and the expansion cavity, and a first one-way valve is installed on the first channel. A first liquid pipe and a second liquid pipe are communicated between the top of the upper piston cavity and the bottom of the lower piston cavity, a liquid pump and a second one-way valve are installed on the first liquid pipe, a transverse plunger cavity is formed in the side wall of the cylinder body, a plunger is installed in the plunger cavity, and the left end of the plunger extends into the second channel. A third channel is communicated between the right end of the plunger cavity and the lower end of the lower piston cavity, and a pressure spring is installed at the left end of the plunger cavity. Self-adaptive adjustment of the return speed of the hydraulic cylinder along with the load can be achieved, safety is high, and sensitivity is high.
Description
technical field [0001] The invention relates to the field of hydraulic equipment, in particular to a slow unloading hydraulic cylinder. Background technique [0002] The hydraulic cylinder is a commonly used jacking device, which has the characteristics of large output force, stable operation, and reliable operation; the hydraulic rod needs to return after being ejected, and when the hydraulic rod returns, it is divided into loaded return and no-load There are two cases of return. When there is a load to return, it is for safety considerations. We hope that the hydraulic rod can descend slowly and steadily, and the greater the load, we hope that the descend will be slower to avoid excessive impulse generated by the load, and return without load. At this time, we hope to quickly return to the position and improve work efficiency; the current hydraulic cylinder generally controls the liquid return speed through the throttle valve, thereby controlling the descending speed of th...
Claims
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IPC IPC(8): F15B15/18F15B15/17F15B15/22F15B15/20
CPCF15B15/1428F15B15/17F15B15/18F15B15/204F15B15/22
Inventor 韩锡楼
Owner 韩锡楼