High tensile cable electrical transmission device for hydraulic grab bucket

Abstract

The invention discloses a high tensile cable electrical transmission device for a hydraulic grab bucket, which performs electrical connection between a host machine of a decontamination machine and the hydraulic grab bucket. The high tensile cable electrical transmission device is composed of the components of: a cable (2) for performing electrical connection, a cable reel (1) on which the cable is coiled, and a waterproof electrical connecting device (3) which electrically connects the cable (2) with the hydraulic grab bucket. The difference between the high tensile cable electrical transmission device of the invention and a previous electrical transmission device of the hydraulic grab bucket is characterized in that: the cable (2) used for the device is a composite wire rope cable which is obtained through intertwisting a plurality of wire ropes outside the cable; because the wire ropes are intertwisted outside the cable (2), the wire ropes which are intertwisted outside the cable (2) effectively protects the cable, so that cable scratch does not easily occur; because the wire ropes have relatively high tensile strengths, drawing breakage of the cable (2) does not easily occur; because tensile strength of the cable is improved, a larger winding force can be applied on the cable reel (1), so that the cable (2) is pulled more tightly, and no easy sag of the cable (2) easily generates under the larger pulling force; therefore cable damage caused by hooking or squeezing of a decontamination grab bucket to the cable does not easily occur, so that the hydraulic decontamination grab bucket can operate reliably.

Description

technical field [0001] The invention belongs to electrical transmission equipment, and relates to an electrical transmission device used for power and control signal transmission of a hydraulic grab bucket on a cleaning equipment with a hydraulic grab bucket. Background technique [0002] In the prior art, the cleaning machine equipped with a hydraulic cleaning grab is generally equipped with electrical equipment to control the work of the grab. The commonly used electrical equipment includes the motor of the hydraulic pump station, the electromagnetic reversing valve, Electromagnetic overflow valve, pressure relay, travel switch and sensor to control the opening and closing of the grab bucket, etc. For these electrical equipment, the main engine of the cleaning machine needs to use the cable reel and cable for winding the cable and the sealed wiring device that can be used underwater to electrically connect with the electrical equipment on the grab, so as to provide power t...

AI Technical Summary

Problems solved by technology

Because the tensile strength of the cable used in the prior art is relatively poor, the outer protective layer of the cable is generally made of rubber or plastic that is easy to hang. In its actual use, the cable is often broken or its protective layer is damaged by other objects. The hooks that cause damage, especially the hydraulic cleaning grabs used for cleaning the trash racks of power stations and pumping stations, because the grabs have to go deep into the water, there are a lot of various dirt around the grabs , These dirt often scratch and hook with the cable connected to the grab, making the cable easy to break or damage. When the surface of the cable is scratched, the seal of the cable is also destroyed, and water will pass through the damaged part of the cable. Into the cable, causing leakage or short circuit of the circuit, so that the cleaning work cannot be carried out normally

In addition, because the winding force of the cable reel is limited by the tensile force of the cable, its winding force is relatively small, which is very easy to cause the cable to be impacted by the water flow or slack after the dirt is hooked, making it easy to clean the dirt The grab itself is hooked or squeezed, causing accidents

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