CN210178354U

CN210178354U - Front shield body of small-section shield tunneling machine for coal mine

Info

Publication number: CN210178354U
Application number: CN201921001407.0U
Authority: CN
Inventors: Zongfu Li; 李宗福; Ningde Zhao; 赵宁德; Changwen Huang; 黄昌文; Zaibing Chen; 陈再兵; Wei Hu; 胡巍; Chenye Guo; 郭臣业; Kaiwan Chu; 楚开万; Xiaobo Zhang; 张晓波; Chaoxian Chen; 陈朝鲜; Junhao Chen; 陈均浩
Original assignee: Chongqing Energy Technology Investment Group Co Ltd
Current assignee: Chongqing Energy Technology Investment Group Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-03-24
Anticipated expiration: 2029-06-28

Abstract

The utility model belongs to tunnel tunnelling equipment for the colliery provides a little section shield tunnelling machine's for colliery front shield body, including anterior segment barrel, middle section barrel and the back end barrel that connects gradually, be equipped with the gear box tie-plate that is used for installing the gear box in the anterior segment barrel, the both sides of anterior segment barrel are provided with a steering cylinder respectively, the free end that turns to the cylinder is connected with and turns to the roof, be provided with two at least mounting brackets that are used for installing the advanced rig along circumference in the middle section barrel, the bottom inboard of middle section barrel is equipped with the sediment stuff pump that is used for the drainage, be provided with a plurality of support frames that are used for installing the dust excluding hood along circumference in the back end barrel, the bottom inboard of middle section barrel and back end barrel is equipped with the current. The utility model provides a pair of front shield body of small cross section shield entry driving machine for coal mine can be applied to the hard rock tunnelling of diameter 3 meters below to solve the needs of the current quick tunnelling of coal enterprise.

Description

Front shield body of small-section shield tunneling machine for coal mine

Technical Field

The utility model belongs to the tunnelling equipment for the colliery, concretely relates to front shield body of small cross section shield entry driving machine for the colliery.

Background

For many years, key technical problems of hard rock tunneling, simultaneous operation of tunneling and anchoring, one-step section forming, working surface dust removal and the like of coal mines become common problems to be solved urgently in the coal industry. At present, the main equipment for roadway excavation of coal mines is a cantilever type tunneling machine or a continuous miner, which plays a great role in coal roadways and semi-coal-rock roadways; however, in rock roadway excavation, when the single compressive strength of rock is greater than 80MPa, the existing cantilever type tunneling machine at home and abroad is difficult to be applied. The research and popularization of the coal mine shield machine is the requirement and the inevitable trend of the development of the shield machine industry and the coal machine industry, and the requirement of the current rapid tunneling of the coal enterprises is solved. The method has great significance for safely and efficiently tunneling the coal mine and reducing the labor intensity. Coal mine tunnels are comprehensively considered from the aspects of economy, efficiency, safety, well descending and transition of hard rock heading machines and the like, and the coal mine tunnels are required to be small in diameter, and the diameter is generally less than 3 meters. Because a full-face hard rock tunneling machine with a cutterhead diameter of less than 3 meters is lacked at present, a front shield body of the full-face hard rock tunneling machine applied to tunneling a roadway with the diameter of less than 3 meters is necessary to be researched.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a front shield body of little section shield entry driving machine for coal mine makes it can be applied to the hard rock tunnelling of diameter 3 meters below to solve the needs of the current quick tunnelling of coal enterprise.

In order to realize the above-mentioned purpose, the utility model provides a little section shield tunnelling machine's anterior shield body for coal mine, including anterior segment barrel, middle section barrel and the back end barrel that connects gradually, be equipped with the gear box tie-plate that is used for installing the gear box in the anterior segment barrel, the both sides of anterior segment barrel are provided with a steering cylinder respectively, the free end that turns to the cylinder is connected with and turns to the roof, be provided with two at least mounting brackets that are used for installing the advanced rig along circumference in the middle section barrel, the bottom inboard of middle section barrel is equipped with the sediment stuff pump that is used for the drainage, be provided with a plurality of support frames that are used for installing the dust excluding hood along circumference in the back end barrel, the bottom inboard of middle section barrel and back end barrel is equipped.

Further, still include one end and be in the gliding adjustable fender in top of back end barrel, adjustable fender follows the extending direction of back end barrel slides, adjustable fender's other end symmetry is provided with two connecting pieces, the upper end of connecting piece with adjustable fender the other end is articulated.

Furthermore, the inside of the top of the rear section cylinder body is relatively provided with two guide pieces, and a sliding groove for the movable baffle to slide is formed between the guide pieces and the inner wall of the rear section cylinder body.

Further, the movable baffle comprises a first plate body and a second plate body, one end of the first plate body is located in the sliding groove, the second plate body is connected with the other end of the first plate body, the second plate body is located on the outer side of the first plate body, and the outer peripheral face of the second plate body is coplanar with the outer peripheral face of the rear section cylinder body.

The utility model has the advantages that: the utility model provides a pair of front shield body of small cross section shield entry driving machine for coal mine can be applied to the hard rock tunnelling of diameter 3 meters below to solve the needs of the current quick tunnelling of coal enterprise.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic perspective view of the present invention at another viewing angle;

FIG. 3 is a schematic diagram of the formal structure of the present invention;

fig. 4 is a left side view of the present invention;

fig. 5 is a right side view of the present invention.

Reference numerals:

10-front section cylinder, 11-gear box connecting disc, 12-steering oil cylinder, 13-steering top plate, 20-middle section cylinder, 21-mounting frame, 22-slurry pump, 30-rear section cylinder, 31-supporting frame, 32-pedal, 34-guide piece, 40-movable baffle, 41-connecting piece, 42-first plate body and 43-second plate body.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 5, the embodiment provides a front shield body of a small-section shield tunneling machine for coal mines, which comprises a front section cylinder 10, a middle section cylinder 20 and a rear section cylinder 30 which are connected in sequence. Anterior segment barrel 10, middle section barrel 20 and back end barrel 30 are all formed by two semi-cylindrical plate-shaped shells through high strength bolted connection respectively, also through high strength bolted connection between front end barrel and middle section barrel 20, middle section barrel 20 and the back end barrel 30, are convenient for like this send into the tunnel from ground and assemble. A gear box connecting disc 11 used for installing a gear box is arranged in the front section cylinder 10, the rear end of the cutter disc is rotatably arranged in the gear box connecting disc 11, a plurality of gear boxes are circumferentially arranged on the gear box connecting disc 11, and the gear boxes can be driven by a motor or a hydraulic motor. Two sides of the front section cylinder 10 are respectively provided with a steering oil cylinder 12, the free end of the steering oil cylinder 12 is connected with a steering top plate 13, when the front shield body needs to adjust the direction, the free end of the steering oil cylinder 12 extends out, and the steering top plate 13 is propped against the inner wall of a tunnel excavated out, so that the excavation direction of the cutter head is controlled. At least two mounting frames 21 for mounting a pilot drill are arranged in the middle section cylinder 20 along the circumferential direction. The bottom inboard of middle section barrel 20 is equipped with the sediment stuff pump 22 that is used for the drainage, and sediment stuff pump 22 and sediment thick liquid pipe connection will cut the sediment thick liquid that the rock in-process produced through sediment stuff pump 22 and remove, and the waste rock that cuts out is removed through belt conveyor system. A plurality of support frames 31 used for mounting a dust hood are arranged in the rear section cylinder 30 along the circumferential direction, preferably, three support frames 31 are uniformly arranged along the circumferential direction, a main beam of the shield tunneling machine penetrates through the dust hood, and a belt conveyor used for transporting gangue is mounted on the main beam. The inner sides of the bottoms of the middle barrel 20 and the rear barrel 30 are provided with footrests 32 for workers to pass through. The front shield body in the embodiment is different from the front shield body in the existing shield machine in structure, is specially designed for the tunneling of hard rock tunnels with the diameter of less than 3 meters, and solves the current rapid tunneling requirement of coal enterprises.

As a further improvement of the scheme, the novel telescopic prop further comprises a movable baffle 40 with one end sliding on the top of the rear-section cylinder 30, the movable baffle 40 slides along the extending direction of the rear-section cylinder 30, two connecting pieces 41 are symmetrically arranged at the other end of the movable baffle 40, the upper ends of the connecting pieces 41 are hinged with the other end of the movable baffle 40, and the lower ends of the connecting pieces 41 are detachably connected with the prop shoes through pin shafts. A flapper 40 is provided for adjusting the clearance distance depending on the condition of the downhole ceiling 13.

As a further improvement of the above scheme, two guide pieces 34 are oppositely arranged on the inner side of the top of the rear-section cylinder 30, the guide pieces 34 are detachably connected with the rear-section cylinder 30 through bolts, and a sliding groove for the movable baffle 40 to slide is formed between the guide pieces 34 and the inner wall of the rear-section cylinder 30. By arranging the guide member 34, a sliding groove for the movable baffle 40 to slide can be formed simply and conveniently, and the assembly and disassembly are convenient.

As a further improvement of the above solution, the movable baffle 40 includes a first plate 42 having one end sliding in the sliding slot and a second plate 43 connected to the other end of the first plate 42, the second plate 43 is located outside the first plate 42, and the outer peripheral surface of the second plate 43 is coplanar with the outer peripheral surface of the rear cylinder 30. The outer diameter of the movable baffle 40 is the same as that of the front section cylinder 10, the middle section cylinder 20 and the rear section cylinder 30, and the outer diameter of the movable baffle is matched with the diameter of a roadway to be tunneled, so that the front shield is guaranteed to move smoothly.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a preceding shield body of small cross section shield entry driving machine for coal mine which characterized in that: including anterior segment barrel (10), middle section barrel (20) and back end barrel (30) that connect gradually, be equipped with gear box connecting disc (11) that are used for installing the gear box in anterior segment barrel (10), the both sides of anterior segment barrel (10) are provided with a steering cylinder (12) respectively, the free end of steering cylinder (12) is connected with and turns to roof (13), be provided with two mounting bracket (21) that are used for installing the leading rig at least along circumference in middle section barrel (20), the bottom inboard of middle section barrel (20) is equipped with sediment stuff pump (22) that are used for the drainage, be provided with a plurality of support frames (31) that are used for installing the dust excluding hood along circumference in back end barrel (30), the bottom inboard of middle section barrel (20) and back end barrel (30) is equipped with the running-board (32) that supply the workman to pass.

2. The anterior shield body of claim 1, wherein: still include one end and be in gliding adjustable fender (40) in the top of back end barrel (30), adjustable fender (40) are followed the extending direction of back end barrel (30) slides, the other end symmetry of adjustable fender (40) is provided with two connecting pieces (41), the upper end of connecting piece (41) with adjustable fender (40) the other end is articulated.

3. The anterior shield body of claim 2, wherein: two guide pieces (34) are oppositely arranged on the inner side of the top of the rear section cylinder body (30), and a sliding groove for the movable baffle (40) to slide is formed between the guide pieces (34) and the inner wall of the rear section cylinder body (30).

4. The anterior shield body of claim 3, wherein: the movable baffle (40) comprises a first plate body (42) with one end sliding in the sliding groove and a second plate body (43) connected with the other end of the first plate body (42), the second plate body (43) is located on the outer side of the first plate body (42), and the outer peripheral surface of the second plate body (43) is coplanar with the outer peripheral surface of the rear-section cylinder body (30).