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Limit protection device for supporting oil cylinder of open type whole-section tunnel rock boring machine

A technology for supporting cylinders and limiting protection, applied in tunnels, mining equipment, earthwork drilling and mining, etc., can solve problems such as damage to the life of the cylinder, bending deformation of the piston rod and cylinder body, extrusion deformation of the piston and the inner wall of the cylinder, etc., to achieve Reduce bending deformation, prevent damage, and reduce cost

Inactive Publication Date: 2012-10-03
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the lateral force of the supporting cylinder is too large, it is easy to cause the bending deformation of the piston rod and the cylinder body and the extrusion deformation of the piston and the inner wall of the cylinder, which will damage the life of the cylinder

Method used

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  • Limit protection device for supporting oil cylinder of open type whole-section tunnel rock boring machine
  • Limit protection device for supporting oil cylinder of open type whole-section tunnel rock boring machine

Examples

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Embodiment Construction

[0013] Open full-face tunnel rock boring machine such as figure 1 As shown, it includes the main beam 1, the base frame 2 matched with the main beam 1, the propulsion cylinder 5 arranged on the main beam 1, the support cylinder 3 with the shoe 4 arranged on the base frame 2, the propulsion cylinder 5 and the support Boot 4 connection. The present invention includes a base frame 2 and a support cylinder 3 arranged on the base frame 2; the base frame 2 is provided with a groove 6, and one end of the support cylinder 3 is a restraint end movable in the groove 6 of the base frame 2 Inside, the other end is the force-bearing end connected to the propulsion cylinder 5 through the shoe 4; on the groove wall of the groove 6 of the base frame 2, a protruding elastic component 7 and the side wall of the restraint end of the support cylinder 3 are provided correspond.

[0014] like figure 2 As shown, the elastic assembly 7 includes a cylindrical limiting block 701, a limiting spring ...

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Abstract

The invention discloses a limit protection device for a supporting oil cylinder of an open type whole-section tunnel rock boring machine. The limit protection device comprises a base frame and a supporting oil cylinder arranged on the base frame, and is characterized in that a groove is arranged on the base frame; one end of the supporting oil cylinder is a restrained end which is movably arranged in the groove of the base frame; the other end of the supporting oil cylinder is a stressed end which is connected with a thrust oil cylinder by a supporting shoe; the groove wall of the base frame is provided with a convex elastic part which corresponds to the side wall of the restrained end of the supporting oil cylinder. The limit protection device has simple structure and low cost; when the supporting oil cylinder bears large lateral pushing force from the thrust oil cylinder through the limit protection device, elastic function of the elastic component in the limit protection device balances the pushing force, so that bending deformation of one end opposite to the other end bearing the lateral force of the supporting oil cylinder is reduced, excessive damages are avoided; when the lateral force is relieved, the supporting oil cylinder can be protected to return a normal working position.

Description

technical field [0001] The invention belongs to an open-type full-section tunnel rock boring machine (TBM), in particular to a limit protection device for a supporting oil cylinder of an open-type full-section tunnel rock boring machine. Background technique [0002] The open full-face tunnel boring machine (TBM) is a large-scale tunneling equipment that integrates mechanical, hydraulic, photoelectric, control and other technologies, and is widely used in tunnel construction in hard rock geology. Due to the structural characteristics of the TBM relying on the friction between the shoe and the hole wall to provide the forward thrust and relying on the sliding of the shoe to change steps, during its working process, one end of the supporting cylinder supporting the shoe will receive a large side force from the propulsion cylinder. Gravity. When the lateral force of the support cylinder is too large, it is easy to cause the bending deformation of the piston rod and the cylinde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00
Inventor 刘飞香程永亮郑大桥彭正阳苏翠侠
Owner CHINA RAILWAY CONSTR HEAVY IND
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