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Key-type connection structure between the cutter head box and the pull rod of the patio drilling rig

A technology of raise drilling rig and connection structure, which is applied to drilling tools, drill bits, drilling equipment, etc. It can solve the problems of troublesome maintenance and high processing cost, and achieve the effects of convenient assembly and disassembly, low manufacturing cost, and increased welding length

Active Publication Date: 2018-02-09
湖南创远矿山机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the cutter head box and the tie rods are also connected by splines, which still cannot get rid of technical problems such as high processing cost and troublesome maintenance.

Method used

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  • Key-type connection structure between the cutter head box and the pull rod of the patio drilling rig
  • Key-type connection structure between the cutter head box and the pull rod of the patio drilling rig

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Such as figure 1 , 2 As shown, the present invention provides a snap-key connection structure between the cutter head case and the pull rod of a raise drilling rig, including a pull rod 1, a cutter head case 3 and a key 6, and the cutter head case 3 is covered by the pull rod 1 The outer surface of the pull rod 1 is connected to the cutter head case 3 through the flange at the end of the pull rod 1, and the flange at the end of the pull rod 1 is provided with a groove, and the key 6 After aligning the groove, weld the cutter head case 3 with the key 6; there is a gap between the inner surface of the cutter head case 3 and the outer surface of the pull rod 1, and the pull rod 1 An oil passage is arranged on the top, and the oil passage communicates with the gap.

[0026] The pull rod 1 of the present invention is connected to the cutter head case 3 with bolts 5 through the flange at the end of the pull rod 1 . After the cutter head case 3 is connected with the pull ro...

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PUM

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Abstract

The invention discloses a clamping key type connecting structure for a cutter disc case and a pull rod of a raise boring machine. The connecting structure comprises the pull rod, the cutter disc body and clamping keys, wherein the cutter disc case is arranged on the outer surface of the pull rod in a sleeving manner; the pull rod is connected with the cutter disc case through a flange at an end part of the pull rod; grooves are formed in the flange at the end part of the pull rod; after the clamping keys are aligned with the grooves, the cutter disc case is assembled and welded with the clamping keys; a gap is formed between the inner surface of the cutter disc case and the outer surface of the pull rod; an oil channel is formed in the pull rod, and is communicated with the gap. The connecting structure is reliable in structure, low in manufacturing cost, convenient to mount, dismount and maintain, economic and practical.

Description

technical field [0001] The invention belongs to the technical field of mining machinery, and in particular relates to a key-type connection structure between a cutter head box and a pull rod of a raise drilling rig. Background technique [0002] Raise drilling rig is an important construction machine in mining machinery. The reaming cutter head is one of the most important construction components of the raise drilling rig. The reliability of the connection structure between the cutter head box and the tie rod directly affects the reliability of the equipment. At present, the connection between most cutterhead boxes and pull rods is splined connection, which has complex structure, high processing cost, uneconomical and practical, and troublesome maintenance. [0003] As disclosed in Patent No. 201320107192.7, a modular combined cutter head is used for a drilling machine, including a cutter head box, a tie rod, a tool holder and a knife set. One end of the tie rod is connected...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B11/00E21B10/26
CPCE21B11/00
Inventor 王毅唐安平代建龙梁宁宁
Owner 湖南创远矿山机械有限责任公司
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