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Safety return circuit device of oil-pressurized elevator

A safety circuit and elevator technology, applied in elevators, transportation and packaging, elevators in buildings, etc., can solve problems such as dilemmas, huge projects, waste of manpower, material resources and money

Inactive Publication Date: 2006-11-01
王秋楠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the operation of the flow control valve 3 causes the compartment 1 to stop, and the oil pipe 7 is deadlocked and cannot be lifted normally, the lifting method must be repaired by professional elevator maintenance personnel entering the mechanical pit 8, and the only opening of the mechanical pit 8 is often Exactly the compartment 1 passage, if the compartment 1 is just when closing the mechanical pit 8 opening 8a, the flow control valve 3 works (as figure 1 state), then the only way to enter the mechanical pit 8 for maintenance is to dismantle the elevator car 1. However, the method is huge and wastes manpower, material resources and money. Otherwise, it is impossible to enter the mechanical pit for maintenance smoothly. create a dilemma

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  • Safety return circuit device of oil-pressurized elevator
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  • Safety return circuit device of oil-pressurized elevator

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Embodiment Construction

[0012] The present invention provides a design of a safety circuit device for an oil hydraulic lift that is more practical, faster to maintain and lowers the maintenance cost.

[0013] In order to enable it to further understand the structural design and technology of this creation, I would like to cooperate with the accompanying drawings to explain it later:

[0014] refer to figure 2 , image 3 As shown, the configuration of the hydraulic lift is:

[0015] Hydraulic cylinder 11, the hydraulic cylinder of single hole inlet and outlet oil;

[0016] The oil pipeline 22, if it is a flexible pipe body, is the most likely place for rupture or oil leakage;

[0017] Pump 21, the power source for oil inlet and outlet;

[0018] Wherein the compartment 10 of the elevator is driven by the hydraulic cylinder 11, and the hydraulic cylinder 11 is driven by the oil pump 21 in the oil tank 20 through the oil pipeline 22 and the switch valve 23. A flow control valve 30 is arranged on the...

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Abstract

A high-safety oil returning unit for hydraulic elevator is disclosed. The oil is pumped by a pump in oil tank from oil tank into cylinder via a valve for driving the elevator. A flow control valve is arranged on oil delivering pipe for preventing the breaking of oil delivering pipe. A high-safety oil returning tube is arranged to by-pass the flow control valve or between the flow control valve and cylinder.

Description

technical field [0001] The present invention provides a safety circuit device for an oil hydraulic elevator, especially a safety oil return pipe is provided between the flow control valve and the hydraulic cylinder or at the side, so that the flow control explosion-proof valve of the elevator can still function when the flow rate is abnormal. Drive the hydraulic cylinder within a safe range, so that the elevator can still go up and down, so that personnel can enter the maintenance smoothly. Background technique [0002] refer to figure 1 Shown, the composition of the hydraulic lift of prior art comprises: the compartment 1 of a lift, the oil pressure cylinder 2 of a single-hole inlet and outlet oil, an oil tank 4 inside is equipped with pump 5, and the pump is the power of inlet and outlet. Source, a switch valve 6, an oil pipe 7 (generally a flexible pipe body, the flexible pipe body is the most likely place for rupture or oil leakage), a flow control valve 3 (commonly kno...

Claims

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Application Information

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IPC IPC(8): B66B5/02B66B9/04
Inventor 王秋楠
Owner 王秋楠