CN216518076U

CN216518076U - Front canopy fixing device for coal mine

Info

Publication number: CN216518076U
Application number: CN202122920956.1U
Authority: CN
Inventors: 徐刚
Original assignee: Handan Fengfeng Zhixiang Machinery Manufacturing Co ltd
Current assignee: Handan Fengfeng Zhixiang Machinery Manufacturing Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-13
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a front canopy fixing device for a coal mine, which comprises a first front canopy and a sleeved second front canopy; a double-layer square steel pipe is arranged in the first front canopy; an electric hydraulic rod is arranged in the first front canopy; the outer side surfaces of the first front canopy and the second front canopy are respectively provided with a fixing structure; the fixing structure comprises a cross rod, two ends of the cross rod are respectively provided with a symmetrical L-shaped vertical rod, the cross rod and the L-shaped vertical rods are hollow, and the cross rod is communicated with the L-shaped vertical rods; a screw rod is rotatably arranged between the upper side surface and the lower side surface in the L-shaped vertical rod, the screw rod is in threaded connection with a first nut and a second nut, the opposite side surfaces of the L-shaped vertical rod are provided with strip-shaped through holes, the opposite side surfaces of the first nut and the second nut are provided with connecting blocks extending out of the strip-shaped through holes, and one side of each connecting block is provided with a clamping block; a driving gear and a driven gear are arranged in the cross rod, a connecting rod is arranged at the axis of the driving gear, and a handle is arranged at one end, extending out of the cross rod, of the connecting rod. The device can support and fix the front canopy without manual movement.

Description

Front canopy fixing device for coal mine

Technical Field

The utility model relates to the technical field of coal mining, in particular to a fixing device for a front canopy for a coal mine.

Background

Coal resources have an important position in the development of national socioeconomic development, and are important solid fuels due to economic price and rich reserves, particularly for power generation. The technology and the process of the coal mining industry in China are also continuously improved, in the prior art, when a coal mine excavation roadway is subjected to excavation construction, an old type forepoling beam needs to move forwards at any time according to the excavation condition in front, the operation needs a worker to ascend, the weight of the forepoling beam is heavy, the worker has great danger by holding the forepoling beam by hands, and under the condition that safety construction is continuously emphasized, the improvement needs to be made to guarantee the personal safety of the worker, and the stability of the forepoling beam in the working process and the safety of the forepoling beam in the advancing process are guaranteed. If the front canopy is not strongly supported in the tunneling process, the extending part is limited, and the tunneling operation is influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to improve the supporting and fixing structure of the front canopy and ensure the stability of the front canopy in the working process and the safety in the forward moving process.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a front canopy fixing device for a coal mine comprises a first front canopy and a second front canopy sleeved with the first front canopy; the first forepoling bar comprises an inner square steel pipe, an outer square steel pipe is sleeved outside the inner square steel pipe, and a fastening mechanism is arranged between the inner square steel pipe and the outer square steel pipe; an electric hydraulic rod is arranged in the first front cantilever, the electric hydraulic rod is fixedly connected with the middle end in the first front cantilever, and the output end of the electric hydraulic rod is fixedly connected with one end, extending into the first front cantilever, of the second front cantilever; the outer side surfaces of the first front cantilever and the second front cantilever are respectively provided with a fixing structure; the fixing structure comprises a cross rod, two ends of the cross rod are provided with symmetrical L-shaped vertical rods, the cross rod and the L-shaped vertical rods are hollow, and the cross rod and the L-shaped vertical rods are communicated with each other; a screw rod is rotatably arranged between the upper side surface and the lower side surface in the L-shaped vertical rod, the screw threads of the screw rod are opposite from the middle to the two ends, one end of the screw rod is in threaded connection with a first nut, the other end of the screw rod is in threaded connection with a second nut, the opposite side surfaces of the L-shaped vertical rod are provided with strip-shaped through holes, the opposite side surfaces of the first nut and the second nut are provided with connecting blocks extending out of the strip-shaped through holes, and one side of each connecting block, which is far away from the L-shaped vertical rod, is provided with a clamping block; the bottom end of the screw rod is provided with a second gear, a driving gear meshed with the second gear on the left side is arranged in the cross rod, a meshed driven gear is arranged on one side, away from the screw rod, of the driving gear, the driven gear is meshed with the second gear on the right side, a connecting rod is arranged on the axis of the driving gear, and a handle is arranged at one end, extending out of the cross rod, of the connecting rod.

Compared with the prior art, the utility model has the advantages that: the forepoling bar is supported and fixed, workers do not need to move the forepoling bar manually, the forepoling bar can move forwards by means of matching of the fixing device and the hydraulic device, labor intensity of the workers is relieved, and danger coefficients of moving the forepoling bar in forepoling operation are reduced.

As an improvement, the firm mechanism comprises a hollow part arranged between an outer square steel pipe and an inner square steel pipe, a plurality of staggered glass fiber rods and reinforcing steel bars are arranged in the hollow part, and the glass fiber rods and the reinforcing steel bars are vertically distributed along the length direction of the front cantilever; a plurality of reinforcing ribs are arranged between the outer surface of the outer square steel tube and the inner square steel tube, reinforcing ribs are arranged on two sides of each reinforcing rib, and the reinforcing ribs are fixedly connected with the outer square steel tube; and ultrathin steel structure fireproof coatings are coated on the outer surface of the outer square steel pipe and the inner surface of the inner square steel pipe.

As an improvement, the transverse rods and the L-shaped vertical rods are welded by using channel steel.

As an improvement, the clamping block is L-shaped.

As an improvement, the bottom of the mounting frame is provided with a through hole capable of accommodating the connecting rod.

Drawings

Fig. 1 is a schematic diagram of the use structure of the utility model.

Fig. 2 is a cross-sectional view of the fixing structure of the present invention.

Fig. 3 is a cross-sectional view of a first forebeam of the present invention.

Fig. 4 is an enlarged view of a portion a of fig. 3 according to the present invention.

As shown in the figure: 1. the device comprises a first forepoling beam, a second forepoling beam, a first hydraulic rod, a second hydraulic rod, a fixing structure, a cross rod, a second hydraulic rod, a third hydraulic rod, a fourth hydraulic rod, a fifth hydraulic rod, a sixth hydraulic rod, a fifth hydraulic rod, a sixth hydraulic rod, a fifth hydraulic rod, a sixth hydraulic rod, a fifth hydraulic rod, a sixth hydraulic rod, a fifth hydraulic rod, a sixth hydraulic rod, a fifth hydraulic rod, a sixth rod, a fifth hydraulic rod, a sixth rod, a fifth hydraulic rod, a fifth rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With reference to all the figures, the front canopy fixing device for the coal mine comprises a first front canopy 1 and a second front canopy 2 sleeved with the first front canopy 1; the first forepoling bar 1 comprises an inner square steel pipe 16, an outer square steel pipe 15 is sleeved outside the inner square steel pipe 16, and a fastening mechanism is arranged between the inner square steel pipe 16 and the outer square steel pipe 15; the firm mechanism comprises a hollow part 17 arranged between an outer square steel pipe 15 and an inner square steel pipe 16, a plurality of glass fiber rods 18 and steel bars 21 which are arranged in a staggered mode are arranged in the hollow part 17, and the glass fiber rods 18 and the steel bars 21 are vertically distributed along the length direction of the front cantilever 1; a plurality of reinforcing ribs 22 are arranged between the outer surface of the outer square steel tube 15 and the inner square steel tube 16, reinforcing ribs 23 are arranged on two sides of each reinforcing rib 22, and the reinforcing ribs 23 are fixedly connected with the outer square steel tube 15; the outer surface of the outer square steel pipe 15 and the inner surface of the inner square steel pipe 16 are coated with ultra-thin steel structure fireproof coatings 19; an electric hydraulic rod 3 is arranged in the first front cantilever 1, the electric hydraulic rod 3 is fixedly connected with the middle end in the first front cantilever 1, and the output end of the electric hydraulic rod 3 is fixedly connected with one end of the second front cantilever 2 extending into the first front cantilever 1; the outer side surfaces of the first front cantilever 1 and the second front cantilever 2 are respectively provided with a fixing structure 4; the fixing structure 4 comprises a cross rod 5, two ends of the cross rod 5 are respectively provided with a symmetrical L-shaped vertical rod 6, the cross rod 5 and the L-shaped vertical rods 6 are hollow, the cross rod 5 and the L-shaped vertical rods 6 are mutually communicated, and the cross rod 5 and the L-shaped vertical rods 6 are welded by using channel steel; a screw rod 7 is rotatably arranged between the upper side surface and the lower side surface in the L-shaped vertical rod 6, the screw threads of the screw rod 7 from the middle to the two ends are opposite, one end of the screw rod 7 is in threaded connection with a first nut 8, the other end of the screw rod 7 is in threaded connection with a second nut 9, the opposite side surfaces of the L-shaped vertical rod 6 are provided with strip-shaped through holes, the opposite side surfaces of the first nut 8 and the second nut 9 are provided with connecting blocks 10 extending out of the strip-shaped through holes, one side of each connecting block 10, which is far away from the L-shaped vertical rod 6, is provided with a clamping block 20, and each clamping block 20 is L-shaped; the bottom of lead screw 7 is equipped with second gear 24, be equipped with in the horizontal pole 5 with the driving gear 11 of left second gear 24 meshing, driving gear 11 keeps away from lead screw 7 one side and is equipped with engaged driven gear 12, driven gear 12 meshes with the second gear 24 on right side, driving gear 11 axle center is equipped with connecting rod 13, the one end that connecting rod 13 extends horizontal pole 5 is equipped with handle 14, horizontal pole 5 bottom is equipped with the through-hole that can hold connecting rod 13.

The working principle of the utility model is as follows: fixing a fixing device on the top surface of a roadway, enabling a front canopy to penetrate through the fixing device, and when the front canopy needs to be fixed, rotating a handle 14 to drive a connecting rod 13 to rotate so as to drive a driving gear 11 and a driven gear 12 to rotate, and further drive a second gear 24 and a screw rod 7 to rotate so as to drive a first nut 8 and a second nut 9 to move up and down, and further drive a connecting block 10 and a clamping block 20 to clamp the first front canopy 1 and the second front canopy 2; when the front cantilever needs to be loosened, the handle 14 is rotated in the opposite direction; the first forepoling beam 1 is made of a double-layer square steel pipe, a plurality of glass fiber rods 18 are arranged in the hollow part 17 in parallel, and fireproof coating layers are arranged inside and outside the hollow part to enhance the fireproof performance of the forepoling beam; the reinforcing steel bars 21, the reinforcing ribs 22 and the reinforcing ribs 23 are arranged, so that the rigidity of the square steel pipe is improved, the square steel pipe is not easy to deform, and the pressure resistance is strong; when the front cantilever needs to move, the fixing device on the outer side of the first front cantilever 1 is fixed, the fixing device on the outer side of the second front cantilever 2 is loosened, and the electric hydraulic rod 3 is started, so that the second front cantilever 2 can move forwards; then the fixing device at the outer side of the first front cantilever 1 is loosened to fix the fixing device at the outer side of the second front cantilever 2, so that the electric hydraulic rod 3 is contracted to drive the first front cantilever 1 to move forwards, and the rest can be done to complete the movement of the front cantilever without manually moving the front cantilever forwards, thereby improving the safety.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a forestope fixing device for coal mine which characterized in that: comprises a first front cantilever (1) and a second front cantilever (2) sleeved with the first front cantilever (1); the first forepoling bar (1) comprises an inner square steel pipe (16), an outer square steel pipe (15) is sleeved outside the inner square steel pipe (16), and a firm mechanism is arranged between the inner square steel pipe (16) and the outer square steel pipe (15); an electric hydraulic rod (3) is arranged in the first front cantilever (1), the electric hydraulic rod (3) is fixedly connected with the middle end in the first front cantilever (1), and the output end of the electric hydraulic rod (3) is fixedly connected with one end, extending into the first front cantilever (1), of the second front cantilever (2); the outer side surfaces of the first front cantilever (1) and the second front cantilever (2) are respectively provided with a fixing structure (4); the fixing structure (4) comprises a cross rod (5), two ends of the cross rod (5) are respectively provided with a symmetrical L-shaped vertical rod (6), the cross rod (5) and the L-shaped vertical rods (6) are hollow, and the cross rod (5) and the L-shaped vertical rods (6) are communicated with each other; a screw rod (7) is rotatably arranged between the upper side surface and the lower side surface in the L-shaped vertical rod (6), the screw threads of the screw rod (7) are opposite from the middle to the two ends, one end of the screw rod (7) is in threaded connection with a first nut (8), the other end of the screw rod (7) is in threaded connection with a second nut (9), the opposite side surfaces of the L-shaped vertical rod (6) are provided with strip-shaped through holes, the opposite side surfaces of the first nut (8) and the second nut (9) are provided with connecting blocks (10) extending out of the strip-shaped through holes, and one side of each connecting block (10) away from the L-shaped vertical rod (6) is provided with a clamping block (20); lead screw (7) bottom is equipped with second gear (24), be equipped with in horizontal pole (5) with left second gear (24) engaged driving gear (11), lead screw (7) one side is kept away from in driving gear (11) is equipped with engaged driven gear (12), driven gear (12) and right side second gear (24) meshing, driving gear (11) axle center is equipped with connecting rod (13), the one end that connecting rod (13) extend horizontal pole (5) is equipped with handle (14).

2. The forepoling bar fixing device for coal mines as set forth in claim 1, wherein: the firm mechanism comprises a hollow part (17) arranged between an outer square steel pipe (15) and an inner square steel pipe (16), a plurality of glass fiber rods (18) and steel bars (21) which are arranged in a staggered mode are arranged in the hollow part (17), and the glass fiber rods (18) and the steel bars (21) are vertically distributed along the length direction of the front cantilever (1); a plurality of reinforcing ribs (22) are arranged between the outer surface of the outer square steel pipe (15) and the inner square steel pipe (16), reinforcing ribs (23) are arranged on two sides of each reinforcing rib (22), and the reinforcing ribs (23) are fixedly connected with the outer square steel pipe (15); the outer surface of the outer square steel pipe (15) and the inner surface of the inner square steel pipe (16) are coated with ultra-thin steel structure fireproof coatings (19).

3. The forepoling bar fixing device for coal mines as set forth in claim 1, wherein: the transverse rod (5) and the L-shaped vertical rod (6) are welded by channel steel.

4. The forepoling bar fixing device for coal mines as set forth in claim 1, wherein: the clamping block (20) is L-shaped.

5. The forepoling bar fixing device for coal mines as set forth in claim 1, wherein: the bottom of the cross rod (5) is provided with a through hole capable of accommodating the connecting rod (13).