CN217897902U

CN217897902U - Supporting bracket for mine roadway

Info

Publication number: CN217897902U
Application number: CN202222502092.6U
Authority: CN
Inventors: 黄志安; 彭仕杰; 陶彦丹; 王冠华; 丁浩; 李金洋; 高玉坤; 张英华
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-11-25
Anticipated expiration: 2032-09-21

Abstract

The utility model relates to the technical field of coal mine supporting equipment, in particular to a supporting bracket for a mine tunnel, which comprises a pre-top platform, a plurality of supporting legs and a plurality of advancing supporting legs, wherein the supporting legs are symmetrically arranged at the bottom of the pre-top platform; wherein a U-shaped buckle is arranged on the travelling supporting leg; the U-shaped buckles on the two travelling supporting legs on the same side of the pre-jacking platform are connected through a stay cable; one end of the inhaul cable is provided with a lock hook matched with the U-shaped buckle; wherein the inhaul cable is also provided with a locker. In the application, one end of the stay cable is hooked in a U-shaped buckle on the traveling leg through a lock hook; the other end of the stay cable bypasses the other U-shaped buckle, the middle of the stay cable is limited and locked through the locker, and therefore the two advancing support legs are tensioned to be matched for use, and the structural stability of the support bracket is improved.

Description

Supporting bracket for mine roadway

Technical Field

The utility model relates to a colliery supporting equipment technical field especially relates to a supporting bracket in mine tunnel.

Background

The safety of the conventional coal mine roadway support is an important guarantee for realizing the high-efficiency production of a coal mine, and in order to keep the stability of the coal mine roadway and prevent surrounding rocks from caving or deforming too much, the advance support needs to be carried out in time after the coal mine roadway is tunneled. In recent years, in the advance support of domestic coal mine roadways, a single hydraulic prop is generally matched with a metal hinged top beam, but in the actual working process, with the advance of a coal face, workers under a mine need to continuously withdraw the last group of supports, convey the supports to the forefront in a manual conveying mode, prop up the supports, and thus, the operation is circulated. However, the existing single hydraulic support and beam are heavy in weight and large in size, and are required to be completely manually operated on site during dismounting, moving and supporting, so that the labor intensity is high, the efficiency is low, the single hydraulic support and beam are not matched with the production speed of modern coal mining machinery, and the single hydraulic support and beam become an important factor influencing the propelling of a working face.

The advancing supporting legs of the conventional coal mine supporting bracket are arranged at the bottom of the pre-top platform through hinged seats or sliding seats, if the local advancing supporting legs are locally collapsed, or when the positions are low, connecting structures are lacked between the advancing supporting legs at different positions, so that the pre-top platform is unstable in stress, the overturning problem is caused, and the safety of the supporting platform is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a supporting bracket in mine tunnel solves and lacks the junctional complex between the landing leg of marcing on supporting bracket in conventional mine tunnel and constructs the not enough problem of stability.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a supporting bracket for a mine tunnel, which comprises a pre-top platform, a plurality of supporting legs and a plurality of advancing supporting legs, wherein the supporting legs and the advancing supporting legs are symmetrically arranged at the bottom of the pre-top platform;

wherein a U-shaped buckle is arranged on the travelling supporting leg;

the U-shaped buckles on the two travelling supporting legs on the same side of the pre-jacking platform are connected through a stay cable;

one end of the inhaul cable is provided with a lock hook matched with the U-shaped buckle;

wherein the inhaul cable is also provided with a locker.

Further preferably, the pre-jacking platforms are fixedly connected through pre-jacking beams which are arranged in a staggered mode.

And further optimizing, wherein the supporting leg is a hydraulic telescopic cylinder connected with the pre-jacking platform.

Preferably, the bottom of the travelling supporting leg is provided with travelling wheels, and the top of the travelling supporting leg is arranged at four corners of the pre-jacking platform.

Preferably, the locker comprises an upper plate, a lower plate and a plurality of locking screws for connecting the upper plate and the lower plate; wherein the upper plywood with the last contact one side of closing the board down has seted up the arc wall, and the two cooperation forms the spacing groove that is used for installing the cable.

And further optimizing, the inhaul cable is a steel rope.

Compared with the prior art, the utility model discloses a beneficial technological effect: in the application, one end of the stay cable is hooked in a U-shaped buckle on the travelling leg through a lock hook; the other end of the stay cable bypasses the other U-shaped buckle, the middle of the stay cable is limited and locked through the locker, and therefore the two advancing support legs are tensioned to be matched for use, and the structural stability of the support bracket is improved.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic view of a support bracket of a mine tunnel of the present invention;

fig. 2 is a schematic view of a support bracket of a mine tunnel of the present invention;

fig. 3 is a schematic view of a support bracket of a mine tunnel of the present invention;

figure 4 is the utility model discloses the supporting bracket's of mine tunnel schematic diagram.

Description of reference numerals: 1. pre-jacking a platform; 2. a traveling leg; 2a, a U-shaped buckle; 3. supporting legs; 4. a pull cable; 5. a locker; 5a, a plywood; 5b, a lower closing plate; 6. a latch hook; 7. a limiting groove; 8. and locking the screw rod.

Detailed Description

As shown in fig. 1-4, the embodiment discloses a support bracket for a mine roadway, which comprises a pre-top platform 1, a plurality of support legs 3 symmetrically installed at the bottom of the pre-top platform 1, and four traveling support legs 2;

the pre-top platform 1 is fixedly connected through staggered pre-top beams, pre-supporting is carried out in advance by matching with a digging machine, and anchor rods and an upper anchoring net are drilled in a roadway.

In this embodiment, the support leg 3 is a hydraulic telescopic cylinder connected with the pre-jacking platform 1, and is used for stably supporting the pre-jacking platform 1.

In this embodiment, the bottom of the travelling support leg 2 is provided with a travelling wheel, and the top of the travelling support leg is arranged at four corners of the pre-top platform 1, so that the pre-top platform 1 is effectively supported by the four travelling support legs 2.

As shown in fig. 1, in the present embodiment, a U-shaped buckle 2a is mounted on the traveling leg 2; the U-shaped buckles 2a on the two travelling support legs 2 on the same side of the pre-jacking platform 1 are connected through a guy cable 4; the inhaul cable 4 is a steel rope.

As shown in fig. 2, one end of the pulling cable 4 is fixedly connected with a locking hook 6 matched with the U-shaped buckle 2a; wherein the stay cable 4 is also provided with a locker 5.

As shown in fig. 3 and 4, the locking device 5 includes an upper plate 5a, a lower plate 5b, and six locking screws 8 for connecting the upper plate 5a and the lower plate 5 b; wherein the arc wall has been seted up to last plywood 5a with the last contact one side of lower plywood 5b, the two cooperation forms the spacing groove 7 that is used for installing cable 4, wherein go up plywood 5a and lower plywood 5b through six locking screw 8 and nut cooperation locking.

The utility model discloses a theory of operation:

wherein one end of the pulling rope 4 is hooked in a U-shaped buckle 2a on the travelling leg 2 through a locking hook 6; the other end of the inhaul cable 4 bypasses the other U-shaped buckle 2a, and the middle of the inhaul cable 4 is limited and locked through the locker 5, so that the two advancing support legs 2 are tensioned to be matched for use, and the structural stability of the support bracket is improved.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above embodiments are only for describing the preferred mode of the invention, and are not intended to limit the scope of the invention, and various modifications and improvements made to the technical solution of the invention by those skilled in the art without departing from the spirit of the invention should fall within the protection scope defined by the claims of the invention.

Claims

1. A supporting bracket for a mine roadway comprises a pre-top platform (1), a plurality of supporting legs (3) and a plurality of advancing supporting legs (2), wherein the supporting legs are symmetrically arranged at the bottom of the pre-top platform (1); the method is characterized in that:

wherein a U-shaped buckle (2 a) is arranged on the travelling leg (2);

the U-shaped buckles (2 a) on the two advancing supporting legs (2) on the same side of the pre-jacking platform (1) are connected through a guy cable (4);

wherein one end of the inhaul cable (4) is provided with a lock hook (6) matched with the U-shaped buckle (2 a);

wherein the inhaul cable (4) is also provided with a locker (5).

2. The support bracket for a mine roadway of claim 1, wherein: the pre-top platforms (1) are fixedly connected through pre-top beams which are arranged in a staggered mode.

3. The support bracket for mine workings according to claim 1, characterized in that: the supporting legs (3) are hydraulic telescopic cylinders connected with the pre-jacking platform (1).

4. The support bracket for a mine roadway of claim 1, wherein: the bottom of the advancing supporting leg (2) is provided with an advancing wheel, and the top of the advancing supporting leg is arranged at four corners of the pre-jacking platform (1).

5. The support bracket for mine workings according to claim 1, characterized in that: the locker (5) comprises an upper plywood (5 a), a lower plywood (5 b) and a plurality of locking screws (8) for connecting the upper plywood (5 a) and the lower plywood (5 b); wherein the arc-shaped groove is formed on the contact surface of the upper plywood (5 a) and the lower plywood (5 b), and the upper plywood and the lower plywood are matched to form a limit groove (7) for installing a stay cable (4).

6. The support bracket for mine workings according to claim 1, characterized in that: the inhaul cable (4) is a steel rope.