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Technology method for re-manufacturing individual hydraulic prop

A technology of single hydraulic prop and process technology, which is applied in the direction of prop/bracket, earthwork drilling, mining equipment, etc., and can solve the problems of scrapping and waste of single hydraulic prop for mining

Inactive Publication Date: 2016-01-06
王学伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the above technical problems, the present invention provides a technical method for remanufacturing single hydraulic props for mines, which enables recycling of single hydraulic props for mines, and solves the problem of early scrapping of single hydraulic props for mines during use. waste of

Method used

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  • Technology method for re-manufacturing individual hydraulic prop
  • Technology method for re-manufacturing individual hydraulic prop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 3 cleaned live columns, injection molding process, the injection mold is a special mold for live column injection molding, the raw material for injection molding is thermoplastic polyester polyurethane elastomer particles, the hardness is 74D, and the particles are dried before injection molding: drying temperature 95 ℃ , The drying time is 3 hours, the thermoplastic polyurethane elastomer is dehumidified and dried, and the water content is 290ppm (mg / kg); the injection molding parameters are: injection molding pressure: 65kg, flow rate: 25%, temperature: 215°C. After the injection molding is completed, a 4mm injection molding layer is obtained, and the final live column diameter φ96 is obtained by lathe processing, and a qualified live column finished product is obtained.

Embodiment 2

[0053] 3 cleaned live columns, injection molding process, the injection mold is a special mold for live column injection molding, the raw material for injection molding is thermoplastic polyether polyurethane elastomer particles, the hardness is 74D, and the particles are dried before injection molding: drying temperature 90 ℃ , The drying time is 4 hours, the thermoplastic polyurethane elastomer is dehumidified and dried, and the water content is 285ppm (mg / kg); the injection molding parameters are: injection molding pressure: 70kg, flow rate 30%, temperature 230°C. After the injection molding is completed, a 4mm injection molding layer is obtained, and the final live column diameter φ96 is obtained by lathe processing, and a qualified live column finished product is obtained.

Embodiment 3

[0055] 3 cleaned live columns, injection molding process, the injection mold is a special mold for live column injection molding, the injection molding raw material is thermoplastic polyester polyurethane elastomer particles, the hardness is 95A, and the particles are dried before injection molding: drying temperature 95 ℃ , The drying time is 3 hours, the thermoplastic polyurethane elastomer is dehumidified and dried, and the water content is 290ppm (mg / kg); the injection molding parameters are: injection molding pressure: 65kg, flow rate: 25%, temperature: 215°C. After the injection molding is completed, a 4mm injection molding layer is obtained, and the final live column diameter φ96 is obtained by lathe processing, and a qualified live column finished product is obtained.

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Abstract

The invention belongs to the field of an individual hydraulic prop in mineral supporting and protecting equipment, and particularly relates to a technology method for re-manufacturing an individual hydraulic prop. The technology method is characterized by comprising the following steps: (1) carrying out integral shot-blasting processing on scrapped mineral individual hydraulic props; (2) classifying, according to specifications and models, the individual hydraulic props subjected to shot-blasting; (2) dismounting classified products into parts, cleaning the parts and classifying the cleaned parts; (3) inspecting and detecting the dismounted parts; (4) making, according to the inspected and detected results, a re-manufacturing technical scheme; (5) re-manufacturing or replacing the parts, particularly replacing a handle body with a novel handle body which can be sealed between an oil cylinder and the outer surface of a plunger; and carrying out surface composite treatment on the outer surface of the plunger by use of thermoplastic elastomer and taking the plunger as a sealing surface; and (6) assembling the parts which meet the quality requirements to form an individual hydraulic prop product which meets the product quality requirements. The technology method for re-manufacturing the individual hydraulic prop can sufficiently utilize waste to reduce the manufacturing cost. The individual hydraulic prop has the advantages of being long in service life, resistant to corrosion and resistant to cracking.

Description

technical field [0001] The invention belongs to the field of single hydraulic props in mine support equipment, and in particular relates to a technical method for remanufacturing single hydraulic props. Background technique [0002] Single hydraulic prop for mining belongs to the supporting equipment used in the coal mining process. It is mainly used for the roof support, end support and advanced support of the coal mining face. The main function is to prevent the goaf of the coal mining face The roof and the roof of the tunneling roadway fall off to ensure the safe production of coal mining enterprises. It is the main support equipment among the three key equipment of support, mining and transportation in the coal production process. It is of great significance to coal production and coal mine safety production. [0003] my country is the country with the largest number of mining working faces and the largest number of roof support equipment in the world. Due to the extre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00E21D15/44
Inventor 王学伟
Owner 王学伟
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