City gate opening-shaped tunnel corner excavation equipment

A city gate hole-shaped and tunnel technology, which is applied in the field of excavation equipment for the side and corner of city gate hole-shaped tunnels, can solve problems such as damage to a swinging oil cylinder, and achieve the effects of improving service life, ensuring safety, and having a compact overall structure.

Pending Publication Date: 2022-05-31
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a corner excavation equipment for a city gate-shaped tunnel, to solve the problem that the rock to be cut will exert alternating force on the wheel cutter head

Method used

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  • City gate opening-shaped tunnel corner excavation equipment
  • City gate opening-shaped tunnel corner excavation equipment
  • City gate opening-shaped tunnel corner excavation equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] like figure 1 and figure 2As shown, the excavation equipment for the corners of the city gate tunnel comprises a main beam 25 and a sliding sleeve 26, the main beam 25 extends along the front and rear directions, and the sliding sleeve 26 is sleeved outside the main beam 25 and is slidably assembled on the main beam 25 in the front and rear direction. . The front and rear ends of the main beam 25 are respectively connected with other equipment of the roadheader.

[0038] In this embodiment, the main beam 25 is provided with a front support body 11 and a rear support body 17 outside the sliding stroke of the sliding sleeve 26, that is, the sliding sleeve 26 is located between the front support body 11 and the rear support body 17, and the two support bodies Support boots on both. Wherein, the lower parts of the front support body 11 and the rear support body 17 are provided with traveling wheels 19 to facilitate the movement of the entire excavation equipment.

[00...

Embodiment 2

[0059] The difference between this embodiment and Embodiment 1 is that, in Embodiment 1, the vertical guide structure is a vertical guide sleeve, and the upper part of the knife arm is guided and slidably assembled in the vertical guide sleeve in the up-down direction. In this embodiment, the vertical guide structure is a vertical guide rail, the vertical guide rail is provided with a T-shaped groove extending in the up-down direction, the upper part of the knife arm is provided with a protrusion extending in the up-down direction, and the protrusion is connected with the T-shaped groove. adaptation. In other embodiments, the T-slots may be replaced by dovetail slots.

Embodiment 3

[0061] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the vertical locking member is the first locking pin, the vertical guide sleeve is provided with a first locking hole, and the upper part of the knife arm is provided with a second lock locking holes, a plurality of second locking holes are arranged at intervals along the up-down direction, and the first locking pin shafts are inserted into the corresponding first locking holes and the second locking holes to connect the upper part of the knife arm to the vertical guide The sleeves lock together. In this embodiment, the vertical locking member is a set screw, the vertical guide sleeve is provided with a threaded hole, and the upper part of the knife arm and the vertical guide sleeve are locked together by the set screw.

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Abstract

The invention relates to city gate opening-shaped tunnel corner excavation equipment which comprises a main beam and a sliding sleeve, the main beam extends in the front-back direction, the sliding sleeve is assembled on the main beam in a sliding mode in the front-back direction, a supporting body is arranged outside the sliding stroke of the sliding sleeve on the main beam, and a supporting shoe is arranged on the supporting body; tool arms are arranged on the left side and the right side of the sliding sleeve respectively, the lower portions of the tool arms are connected with wheel type cutter heads, and vertical telescopic cylinders used for driving the tool arms to move in the vertical direction are arranged between the upper portions of the tool arms and the sliding sleeve. The vertical guide structure is used for guiding the tool arm to move in the up-down direction and limiting the tool arm in the front-back direction; a driving cylinder used for driving the sliding sleeve to slide on the main beam is arranged between the supporting body and the tool arm or the sliding sleeve. In the cutting process, the counter-acting force of the rock to be cut acts on the wheel type cutter head and then is transmitted to the vertical guide sleeve, the acting force cannot be transmitted to the vertical telescopic cylinder, and the service life of the vertical telescopic cylinder is prolonged.

Description

technical field [0001] The invention relates to a roadheader, in particular to a side and corner excavation device of a city gate-shaped tunnel of the roadheader. Background technique [0002] Special-shaped tunnels are different from circular tunnels, such as city gates, rectangles, horseshoes, etc. This type of tunnel is widely used, mainly used in national defense, energy, transportation, water conservancy and other projects. Compared with the circular tunnel, the space utilization rate is increased by 15-20%, taking into account the structural force and space utilization rate. [0003] In the field of hard rock tunnel construction equipment in the shape of a city gate, the excavation of corners is carried out with a wheel cutter head mounted behind the main machine with a circular section. While the front main engine excavates the circular section, the rear wheel cutter head excavates the corners on both sides of the lower part of the circle, and the two fit together t...

Claims

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Application Information

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IPC IPC(8): E21D9/10
CPCE21D9/1006E21D9/1093Y02E10/20
Inventor 孟昊宋德华陈真周永举陈凯歌齐志冲田彦朝周倩崔俊峰
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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