Double-energy storage internal and external type plunger cylinder
An outer plunger and inner plunger technology, applied in the field of hydraulic cylinders, can solve the problems of energy waste, increased construction investment, high investment costs and power consumption costs
Inactive Publication Date: 2012-03-14
沈传良
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Problems solved by technology
Moreover, the electric hoist or traction machine needs to be installed in the machine room on the upper floor, and the additional machine room is higher than the factory building, which increases the construction investment.
Hydraulic cylinders have been used as power. Since the pressure oil in the hydraulic cylinder plunger is all returned to the oil tank when the elevator is going down, all energy is wasted, and the speed is controlled by the control valve group to discharge oil. When the elevator goes up, there is a hydraulic cylinder. The weight of the plunger and the car is directly supported by the hydraulic pump. The weight of the hydraulic cylinder plunger and the car makes the power consumption large, and a high-power motor is required, which leads to high investment and power consumption costs.
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[0009] The invention discloses a double-energy storage internal and external plunger cylinder, such as figure 1 , figure 2 As shown, it includes an outer cylinder 2, a cylinder head 1, and an outer plunger rod 4. There is a cylinder cavity 3 between the outer cylinder 2 and the outer plunger rod 4, and the outer plunger is installed at the fitting position of the outer cylinder 2 and the outer plunger rod 4 The seal 6 is characterized in that an inner plunger rod 7 is installed in the inner cavity of the outer plunger rod 4, and an outer plunger cavity 5 and an outer plunger cavity 5 are arranged between the outer plunger rod 4 and the inner plunger rod 7 Through the inner oil delivery hole 8 in the inner plunger rod 7, the inner oil delivery hole 8 in the inner plunger rod 7 is connected to the oil pipe through the control valve group 16 (the specific structure of the control valve group 16 is the same as the prior art) 1 No. 2 accumulator 11, the oil cylinder cavity 3 is con...
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The invention discloses a double-energy storage internal and external type plunger cylinder. The plunger cylinder comprises an external cylinder, a cylinder cap and an external plunger rod, wherein a cylinder cavity is formed between the external cylinder and the external plunger rod; an external plunger sealing piece is arranged on the matched part of the external cylinder and the external plunger rod; an internal plunger rod is arranged in the cavity of the external plunger rod; an external plunger cavity is formed between the external plunger rod and the internal plunger rod; the external plunger cavity is communicated with an internal oil conveying hole in the internal plunger rod; the internal oil conveying oil in the internal plunger rod is connected with an oil pipe A and communicated with an energy storage device I by a control valve bank; and the oil cylinder cavity is connected with an oil pipe B and communicated with an energy storage device II and an oil pump by the control valve bank. The double-energy storage oil cylinder with the internal plunger and the external plunger is mainly characterized in that: the internal plunger rod is arranged in the cavity of the external plunger rod; and the energy storage device I and the energy storage device II are used, and the energy stored in the two energy storage devices are energy which is stored in pressure oil and released in the cylinder plungers when an elevator descends, and is completely free stored energy; and when the elevator ascends, the energy storage device I and the energy storage device II release energy at the same time.
Description
Technical field [0001] The invention relates to a hydraulic oil cylinder, in particular to a double-energy storage internal and external plunger oil cylinder, which is mainly suitable for passenger and cargo elevators. Background technique [0002] Freight elevators (referred to as freight elevators) generally use electric hoists, traction machines or hydraulic cylinders as power. The electric hoists are equipped with transmission gears, connecting shafts and steel wires. Due to the long-term operation of the elevator, the steel wires are easy to wear and break, and the gears and shafts are easy Fracture, so the safety factor is poor, there are many failures, and the maintenance is troublesome. The traction machine uses steel wires and configuration blocks, and the load is limited by the car counterweight. Moreover, the electric hoist or the traction machine needs to be installed in the machine room on the upper floor, and the machine room of one floor is higher than the factory...
Claims
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Login to View More IPC IPC(8): F15B15/14F15B1/04
CPCY02E60/16
Inventor 沈传良
Owner 沈传良