Dismantling and ejecting pin device of hydraulic support

Abstract

The invention provides a hydraulic pin push-out device for support disassembly and belongs to the field of pin dismantling devices for a coal mine support. The hydraulic pin push-out device is characterized by comprising a base (5), a supporting frame (2) installed in the base (5) in a sliding mode and an oil cylinder (1) welded to the top of the supporting frame (2); two cross beams (8) are arranged on the lower portion of the base (5) and the middle portion of the supporting frame (2) respectively and are movably connected with each other through a lifting component; the oil cylinder (1) is connected with an oil supply device through a rubber pipe, and the front side face and the rear side face of the oil cylinder (1) are provided with corresponding support connecting parts. Through application of the hydraulic pin push-out device, personal safety in the pin push-out process is ensured, and the phenomena that a chain is broken in the pin pulling process and screws are damaged in the pulling process are avoided; meanwhile, the pin pulling effect and the labor efficiency are improved.

Description

technical field [0001] The utility model relates to a hydraulic support dismantling pin ejection device, which belongs to the field of coal mine support dismantling equipment. Background technique [0002] In coal mine installation and withdrawal work. Due to the large size and heavy weight of some hydraulic supports in the mine, limited by the transportation routes along the way, after the supports are withdrawn, they must be disassembled and repacked before going into the well. The traditional removal process of the hydraulic support is to first thread the bolt hole on the round pin with a threaded bolt, tighten it with a Ø24 or Ø30 puller bolt, and then use a puller to pull it out. However, due to the long-term use of the hydraulic support in the downhole, it will be difficult to extract the connecting pins of the various components during the disassembly process. It often happens that the pin bolts are pulled out or pulled out or even the connecting chain is pulled out...

AI Technical Summary

Problems solved by technology

However, due to the long-term use of the hydraulic support underground, it will be difficult to pull out the connecting pins of each component during the disassembly process.

It often happens that the pin bolts are pulled out or pulled out or even the connecting chain is pulled out. The labor intensity of the operator is high during the cancellation process, and the safety cannot be guaranteed. At the same time, the withdrawal rate is hindered and the normal production organization is affected.

Images