Protective bracket with net profile structure for subway tunnel construction

A technology for protective brackets and mesh profiles, which is applied to mine roof brackets, mining equipment, and earth-moving drilling and mining, etc., can solve problems such as being unfavorable for tunnel construction and poor adjustability.

Pending Publication Date: 2020-10-30
CHINA RAILWAY LIUYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor adjustability, which is not conducive to the construction of tunnels of different sizes, needs improvement urgently

Method used

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  • Protective bracket with net profile structure for subway tunnel construction
  • Protective bracket with net profile structure for subway tunnel construction
  • Protective bracket with net profile structure for subway tunnel construction

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0027] Such as Figure 1-Figure 3 As shown, this specific embodiment adopts the following technical scheme: it includes universal wheel 1, main strut 2, auxiliary strut 3, No. 1 support top 4, No. 2 support top 5, stretching mechanism 6, guide rail group 7 , driving mechanism 8, soft ladder 9, horizontal guide shaft 10, horizontal guide bearing 11, pin shaft 12 and auxiliary support top 13;

[0028] Above-mentioned main strut 2 is made of main fixed rod 2-1, active rod 2-2, strut screw rod 2-3, plane thrust ball bearing 2-4 and main bearing 2-5; The steering wheel 1 is fixed on the lower end of the main fixed rod 2-1 by screw connection; the main fixed rod 2-1 is movably inserted with a strut screw rod 2-3, and the upper end of the strut screw rod 2-3 is inserted into the main bearing 2-5, the main bearing 2-5 is embedded and welded and fixed in the lower end of the active rod 2-2, and the strut screw rod 2-3 located at the upper end of the main fixed rod 2-1 is sleeved with ...

specific Embodiment approach 2

[0043] see Figure 4 The difference between this specific embodiment and the specific embodiment one is that: the opposite two vertical surfaces of the No. 1 support top 4 are provided with docking grooves 4-1, and the opposite two The vertical surface is integrally formed with a butt edge 5-1 that is inserted in cooperation with the butt groove 4-1, and the rest of the structure is the same as that of the specific embodiment one. Two auxiliary struts 3 are sleeved on the horizontal guide shaft 10, and are located on the front and rear sides of the main strut 2. The No. 2 support top 5 at the upper end of the two auxiliary struts 3 utilizes the butt joint edge 5-1 to connect with the main strut. 2. The insertion and fit of the docking groove 4-1 in the No. 1 support top 4 at the upper end is connected as a whole, and two horizontal guide shafts 10 in the auxiliary strut 3 connected with the main strut 2 are also sleeved on the front and rear. Auxiliary strut 3, the No. 2 supp...

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Abstract

The invention relates to the technical field of tunnel construction, in particular to a protective bracket with a net profile structure for subway tunnel construction. A universal wheel positioned atthe lower part of a main supporting rod is fixed at the lower end of a main fixed rod; a supporting rod screw is movably inserted in the main fixed rod; the upper end of the supporting rod screw is inserted in a main bearing; the main bearing is embedded in the lower end of a main movable rod; the portion, at the upper end of the main fixed rod, of the supporting rod screw is sleeved with a drivengear in a drive mechanism; threads meshing with the supporting rod screw are arranged on the inner ring surface of the driven gear; and the lower ring surface of the driven gear is fixed on the upperring surface of a plane thrust ball bearing; and the lower ring surface of the plane thrust ball bearing is fixed at the upper end of the main fixed rod. The supporting range of the bracket can be adjusted according to the size of a net profile frame, so that the bracket has high adjustability and wider application range.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a protective bracket for subway tunnel construction with a mesh profile structure. Background technique [0002] During the construction of the tunnel, it is necessary to use some supports to support the mesh profile frame that has been built or the tunnel wall that has been formed. The current protective bracket is only built with pipes or angle steel and pipe connectors. It needs to be built in advance according to the size of the mesh profile structure. Once it is built, its support range cannot be changed. Poor adjustability is not conducive to the construction of tunnels of different sizes, and urgently needs to be improved. Contents of the invention [0003] The object of the present invention is to aim at the defects and deficiencies of the prior art, to provide a protective bracket for subway tunnel construction with a rationally designed net profile struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04E21D23/08
CPCE21D23/04E21D23/08
Inventor 李广涛谢家化严一清何爱华朱光亚李献航林云俊甘宜诚孙东波宋贺月范俊杰刘玉杰余涛
Owner CHINA RAILWAY LIUYUAN GRP CO LTD
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