Pulling machine for pulling out rubber tube

Abstract

The invention relates to the technical field of road, bridge and building constructions, and specifically discloses a pulling-out machine for pulling out a rubber pipe. The pulling-out machine for pulling-out the rubber pipe comprises a housing and a plurality of transmission gears that is arranged inside the housing and is engaged with each other for driving reversely. The plurality of transmission gears is arranged in a fold line type. The transmission gears are provided with driving wheels for driving the rubber pipe to move. The transmission gear at the bottom of the housing is connected with a gear motor which supplies power to the transmission gears through a rotating shaft. One end of each of the transmission wheels at the bottom and on the top of the housing is provided with a compressing wheel for compressing the rubber pipe. The pulling-out machine for pulling out the rubber pipe has the advantages of safe operation, simple use, and great pulling force, with the requirement on working site being greatly reduced.

Description

technical field [0001] The invention relates to the technical field of highway and bridge construction, in particular to an extractor for extracting rubber pipes. Background technique [0002] In the current bridge construction, the process of using rubber tubes to pre-embed and pull out concrete prefabricated beams to form reserved channels has been widely used. In the ultrasonic non-destructive testing of the quality of bridge pile foundations, the technology of using rubber tubes to replace steel pipes for acoustic testing has also been gradually applied. [0003] During the construction of existing projects, the rubber tube embedded in the concrete body needs to be pulled out after the concrete is initially set, and the main method of pulling out the rubber tube is to use a rope to expose the rubber tube head part outside the concrete body. After binding, use a winch or crane to pull it out. This method has the following disadvantages: 1. It is easy to cause damage to ...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: 1. It is easy to cause damage to the surface of the rubber tube, especially the rubber tube is deformed or broken due to the concentrated force at the position where the rope is tied; 2. There is a huge rebound force when the rubber tube is pulled out. 3. The rubber tubes pre-buried in concrete are generally tens of meters long. When the rubber tubes are pulled out by a hoist, the hoist can also drive tens of meters to pull out the rubber tubes. Large working space is required for operation

[0004] Although there are different types of extraction machines on the market, not many are actually used. Even the extraction machines used on site have the following disadvantages: 1. Due to the combination of conveying wheels and pressure wheels, hydraulic pressure is required. device to increase the pressure, and it is necessary to use two conveying wheels in the same direction, so that a bridge wheel needs to be added between the two conveying wheels. Both of the above two points need to provide more parts and power, which undoubtedly increases the difficulty of manufacturing. And the cost of use; 2. Because the contact area between the rubber tube and the transmission wheel is too small, the friction force is reduced, so when it is pulled to a certain strength, there is a slipping phenomenon between the transmission wheel and the rubber wheel, resulting in a large force to pull out the rubber tube decrease

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