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Re-expanding cutter head and its control method

A control method and cutter head technology, which is applied in the field of mining machinery, can solve problems such as troublesome disassembly and assembly, time-consuming and labor-intensive problems, and achieve the effects of shortening construction time, avoiding potential safety hazards, and saving labor intensity

Active Publication Date: 2022-04-12
HUNAN CHUANGYUAN HIGH TECH MACHINERY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a reaming cutter head and its control method, aiming at solving the problem that the existing reaming cutter head needs to be constructed twice from the bottom to the top when reaming large-diameter holes, which makes disassembly and assembly troublesome, time-consuming and labor-intensive. question

Method used

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  • Re-expanding cutter head and its control method
  • Re-expanding cutter head and its control method
  • Re-expanding cutter head and its control method

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, in t...

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Abstract

The invention discloses a re-expanding cutterhead and a control method thereof. The re-expanding cutterhead includes: a pull rod, an upper cutter head, a lower cutter head and a plunger oil cylinder, and the pull rod is installed in the center of the upper cutter head and the lower cutter head. , the diameter of the lower cutterhead is greater than the diameter of the upper cutterhead; the lower cutterhead is fixedly connected to the bottom end of the pull rod; the plunger cylinder includes a cylinder and a piston rod, and the cylinder is fixed on The top end of the lower cutter head, the piston rod can extend upwards; the upper cutter head is located above the plunger cylinder and is in contact with the piston rod, and the upper cutter head is circumferentially fixed to the pull rod , and can slide up and down relative to the pull rod. Through the re-expanding cutter head, one-time upward reaming can be realized to form a well.

Description

technical field [0001] The invention belongs to the technical field of mining machinery, and in particular relates to a compound expansion cutter head and a control method thereof. Background technique [0002] Raise drilling rigs use hobs on the cutter head to break rocks for hole reaming. The hole reaming process of the traditional raise drilling rig is usually: after the pilot hole is completed, install the reaming cutterhead on the lower part, and use the reaming cutterhead to complete the hole reaming at one time. The drillable diameter of the traditional reaming cutterhead is within 1500mm . [0003] The diameter of the new raise drilling rig is 3500mm at one time, which is limited by the maximum output capacity of the power head. If you want to construct a raise with a diameter larger than 3500mm, you need to ream the hole twice from the bottom to the top to complete: 1. After the pilot hole is completed, first Install a small cutterhead at the bottom and construct ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D3/00
CPCE21D3/00
Inventor 王毅唐安平未崴熊钰明谭崎文
Owner HUNAN CHUANGYUAN HIGH TECH MACHINERY CO LTD
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