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Route limiting stopper of hydraulic hoisting device

A technology of lifting equipment and stoppers, which is applied in the direction of clockwork mechanism and hoisting device, etc., can solve the problems of stopper valves being prone to rust and failure, high price and cost, and small practical range, so as to achieve easy maintenance and low cost. Low, practical effect

Inactive Publication Date: 2013-02-20
JIANGSU WEIHE MARINE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its typical representative is such as the patent number: ZL 200520111759.3 The cam type lifting device is a typical representative, and its hydraulic limit is limited by connecting the limit valve with the LS port in the working oil circuit of the manual proportional valve. Although the adjustment is convenient, the price High cost, small practical range, long pipeline, exposed limit valve, easy to rust and fail! In addition, the proportional valve itself has high requirements, and its practical range is small. It is only suitable for the proportional valve with LS port in the working oil circuit of manual proportional valve, which is much more expensive than the proportional valve of the same specification without LS port.
There are also some brands of proportional valves that do not have an LS port in the working oil circuit, so there is no way to lift up and down to limit the position

Method used

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  • Route limiting stopper of hydraulic hoisting device
  • Route limiting stopper of hydraulic hoisting device
  • Route limiting stopper of hydraulic hoisting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as Figure 1-3 As shown, this embodiment can realize bidirectional limit. A stroke limiter of hydraulic lifting equipment includes limiter housing 1, screw 2, impact plate 3, guide rod 4, limit component 5, and The rod 6, the reversing valve 7 and the bearing 8; the stopper housing 1 is fixedly installed on the bracket of the hydraulic lifting equipment, the screw 2 is connected with the spool shaft 9 of the hydraulic lifting equipment through threads, and the The bearing 8 is installed between the stopper housing 1 and the spool shaft 9; the reversing valve 7 includes a valve body 71 and a contact lever 72, and the impact plate 3 is rotatably fixed at the end of the screw 2, The guide rod 4 is fixedly installed on the stopper housing 1, the center of the guide rod 4 is parallel to the center of the reel shaft 9, and the guide rod 4 passes through the upper part of the collision plate 3; the rocker 6 It is fixedly connected with the contact lever 72 of the reversin...

Embodiment 2

[0022] Such as Figure 4 As shown, this embodiment can only realize one-way limit. A stroke limiter of hydraulic lifting equipment includes limiter housing 1, screw 2, impact plate 3, guide rod 4, and limit component 5. , Rocker 6, reversing valve 7 and bearing 8; the stopper housing 1 is fixedly installed on the bracket of the hydraulic lifting equipment, and the screw 2 is connected with the spool shaft 9 of the hydraulic lifting equipment through threads, The bearing 8 is installed between the stopper housing 1 and the spool shaft 9; the reversing valve 7 includes a valve body 71 and a contact lever 72, and the impact plate 3 is rotatably fixed at the end of the screw 2 The guide rod 4 is fixedly installed on the stopper housing 1, the center of the guide rod 4 is parallel to the center of the reel shaft 9, and the guide rod 4 passes through the upper part of the impact plate 3; The rod 6 is fixedly connected with the contact lever 72 of the reversing valve 7, and the limit ...

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PUM

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Abstract

A route limiting stopper of a hydraulic hoisting device comprises a limiting stopper shell body, a screw, a position hitting plate, a guide rod, a limiting part, a rocking arm, a reversing valve and a bearing. The screw rotates along with a rolling drum, the position hitting plate fixed on the end portion of the screw cannot rotate due to the action of the guide rod; the connection mode of the position hitting plate and the screw is relatively rotatable, accordingly the number of rotating turns of the rolling drum is the rotating turns of the screw, converted into the number of screw pitch of the screw, and further converted into axial displacement of the position hitting rod; and then limiting is achieved by pushing the limiting through the position hitting plate. The route limiting stopper of the hydraulic hoisting device has the advantages of being accurate and reliable in limiting, sensitive in movement, simple and convenient to adjust, easy to maintain, durable, convenient to mount, low in cost and strong in practical applicability.

Description

Technical field [0001] The invention relates to a stroke limiting device of hydraulic lifting equipment, in particular to a stroke limiting device of hydraulic lifting equipment. Background technique [0002] At present, the general lifting equipment is equipped with a stroke limit device. The commonly used lifting stroke limiters in the safety protection device of hoisting machinery include heavy hammer type, coding type and transmission type. The heavy hammer lifting stroke limiter adopts the principle that the hook hits the lever to make the heavy hammer balance switch action when the lifting limit is reached. It has the disadvantages of easy damage, poor reliability, and large maintenance. The encoder of the coded lifting stroke limiter is connected to the reel shaft, and the output pulse code accurately represents the number and angle of the reel. It also has the disadvantages of poor reliability, large maintenance, and high cost. The reducer of the transmission type liftin...

Claims

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Application Information

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IPC IPC(8): B66D1/56
Inventor 余小兵
Owner JIANGSU WEIHE MARINE EQUIP