Overload protection device of screw open-close machine

A technology of overload protection and protection devices, which is applied in the direction of measuring devices, coastline protection, water conservancy projects, etc., can solve the problems of insufficient overload protection, and achieve the effects of convenient fixing, convenient maintenance, and large tonnage

Inactive Publication Date: 2011-08-17
徐州淮海电子传感工程研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of protection device can only protect against overload when the screw hoist is rising, and cannot protect against overload when the gate is running downward or the two sides of the gate slot are stuck.

Method used

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  • Overload protection device of screw open-close machine
  • Overload protection device of screw open-close machine
  • Overload protection device of screw open-close machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: The protection device has a screw hoist installation block and an anchor installation block, a transition block is provided between the screw hoist installation block and the anchor installation block, and strain gauges are pasted on the side wall of the transition block. The output line of the strain gauge outputs the signal from the end of the foundation mounting block to the PLC controller for processing, and the controller is connected with the motor of the screw hoist.

[0014] The PLC controller is selected from Schneider TWDLCAE40 series.

[0015] The strain gauge is a metal resistance strain gauge, which is composed of a base material, a metal strain wire or strain foil, an insulating protection sheet and a lead wire. The metal strain wire or strain foil is pasted on the base material, and a layer of insulation protection sheet is covered on the surface , the lead-out lines of metal strain wires or strain foils are fixed on the base material.

[0...

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PUM

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Abstract

The invention discloses an overload protection device of a screw open-close machine and belongs to a protection device for the up and down movement of a hydraulic gate. The protection device comprises a screw open-close machine mounting block and a foundation mounting block, wherein a transitional block is arranged between the screw open-close machine mounting block and the foundation mounting block; strain gauges are adhered to side walls of the transitional block; and output lines of the strain gauges output signals from the foundation mounting block to a programmable logic controller (PLC)for processing the signals, and the controller is connected with a motor of the screw open-close machine. An overload protection device is respectively arranged on both sides below the base of the screw open-close machine; the screw open-close machine is fixed on the screw open-close machine mounting block and the foundation mounting block is fixed on the base of the screw open-close machine by foundation screws. The overload protection device has the advantages of: 1, convenient mounting, 2, heavy tonnage, 3, realization of protection by using the negative and positive force principle of theoverload protection device, 4, convenient cable fixation without backward and forward expansion along with the movement of the screw, and 5, convenient maintenance.

Description

technical field [0001] The invention relates to a protection device for a water conservancy gate running up and down, in particular to an overload protection device for a screw hoist. Background technique [0002] As we all know, when the screw hoist is in actual operation, it mainly relies on the upper and lower limits of the equipment for protection. When the gate moves to the upper limit, the upper limit limit action realizes protection; when it runs to the lower limit, the lower limit limit action realizes protection. However, in certain occasions, if the two sides of the gate slot are stuck, or there are obstacles on the sill below the gate, continuing to operate the equipment will cause damage to the equipment, bending of the screw rod, and the top of the hoist. [0003] At present, there is a connecting shaft at the connection between the drive screw and the gate of the screw hoist. The overload protection device for the screw hoist is to replace the original connect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/22E02B7/20
Inventor 邵红超沈统阳高朋
Owner 徐州淮海电子传感工程研究所
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