Underground roadway mould bag lifting and shaping device

Abstract

The present application relates to a roadway mould bag lifting and shaping device underground, belonging to the technical field of coal fully mechanized mining support; including front end anchoring support, lifting and shaping mechanism, the front end anchoring support is located in the front side of lifting and shaping mechanism, and the front end anchoring support is connected with lifting and shaping mechanism through pull moving jack; the lifting and shaping mechanism includes shaping frame, the shaping frame is formed by three box bodies by tailor welding, the outer side of left side box body and right side box body is arranged with vertical telescopic jack, the piston rod head of telescopic jack upper end is provided with U-shaped groove, and the outer side of front side box body is provided with anchoring assembly; the problem that the current along empty roadway in flexible mould bag pouring quick-setting cement paste mode step is complicated and the efficiency is relatively low is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal fully-mechanized mining support, and particularly relates to a device for lifting and shaping mold bags in underground tunnels. Background Art

[0002] As a technology for underground pillarless mining, gob-side tunneling has been widely used in recent years with the continuous development of fully mechanized mining equipment. At present, gob-side tunneling technology mostly adopts the method of pouring quick-setting cement slurry in flexible mold bags. This method requires multiple personnel to hang the mold bags on the roof with wires in advance, and then manually lift the single pillars to the appropriate position, and support the mold bags on the roof. After the mold bags solidify, the single pillars need to be manually retracted and moved to the front again to support the mold bags again. This operation method is cumbersome and inefficient, and requires a large number of operators. It cannot meet the needs of underground fully mechanized mining gob-side tunneling work. To this end, the development of a device that can automatically lift the mold bags and can quickly shape the cast mold bags has become a necessity for the development of gob-side tunneling technology in fully mechanized mining. Summary of the Invention

[0003] The present invention overcomes the shortcomings of the existing technology and proposes an underground tunnel mold bag lifting and shaping device; it solves the problems of complicated steps and low efficiency in the current method of pouring quick-setting cement slurry in flexible mold bags in gob-side tunnel retention.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0005] The underground tunnel mold bag lifting and shaping device includes a front-end anchoring bracket and a lifting and shaping mechanism. The front-end anchoring bracket is located at the front side of the lifting and shaping mechanism, and the front-end anchoring bracket and the lifting and shaping mechanism are connected by a pulling jack; the lifting and shaping mechanism includes a shaping frame, which is welded by three-sided box bodies. Vertical telescopic jacks are arranged on the outer sides of the left box body and the right box body. The piston rod head at the upper end of the telescopic jack is provided with a U-shaped groove, and an anchoring assembly is provided on the outer side of the front box body.

[0006] Furthermore, two guide rods are fixedly arranged on the end face of one end of the front anchoring bracket close to the lifting and shaping mechanism, and the two guide rods extend toward one side of the lifting and shaping mechanism. Two guide grooves are provided on the lifting and shaping mechanism, and the two guide rods extend into the two guide grooves from one end away from the front anchoring bracket.

[0007] Furthermore, two guide grooves are provided on the base of the front box body.

[0008] Furthermore, the front-end anchoring bracket includes a base and a front-end cross beam. The front-end cross beam is located above the base. The front-end cross beam and the base are connected by two vertical front-end columns. The lower end of the front-end column is fixed inside the base, and the upper end of the front-end column is connected to the front-end cross beam. The two front-end columns are connected by a clamp.

[0009] Furthermore, the lower end surface of the base remains horizontal, and the lower end surface of the base is inclined upward away from the side edge of the bracket shaping mechanism.

[0010] Furthermore, a group of ear plates are symmetrically arranged on the left and right sides of the base; a pulling jack is respectively arranged on the left and right sides of the lower end of the lifting and shaping mechanism, the cylinder bottoms of the two pulling jacks are fixedly connected to the lifting and shaping mechanism, and the piston rod ends of the two pulling jacks are hinged to the two groups of ear plates on both sides of the base through pins.

[0011] Furthermore, each box body includes a base and a box body, and the box body is fixedly arranged at the inner edge of the upper end surface of the base; a row of ear plates are provided at the outer edge of the upper end surface of the base of the left box body and the right box body, and each ear plate is hinged to one end of the bottom of the cylinder of the telescopic jack through a pin shaft, the piston rod head of the telescopic jack extends vertically upward, and the cylinder of the telescopic jack is fixedly connected to the box body through a clamp.

[0012] Furthermore, the anchoring assembly includes a rear end column and a rear end beam; two column sockets are symmetrically provided at the left and right ends of the outer edge of the upper end surface of the base of the front box body, and a rear end beam is provided above the base of the front box body. The rear end beam and the base of the front box body are connected by two vertical rear end columns, the lower end of the rear end column is fixed to the column socket on the base of the front box body, and the upper end of the rear end column is connected to the rear end beam; the cylinder body of the rear end column is fixedly connected to the box body of the front box body through a clamp.

[0013] Furthermore, square grooves are arranged on the outer panels of the box bodies of the left box body and the right box body, and U-shaped long grooves are arranged on the inner panels of the box bodies of the left box body and the right box body. The U-shaped long grooves correspond to the square grooves one by one and are connected to each other.

[0014] Furthermore, a row of hanging ears are fixedly provided at the upper edges of the left and right end surfaces of the mold bag, and a through hole is provided at the outer edge of the hanging ear. The through holes of a row of hanging ears are coaxially arranged, and a steel bar is inserted into the through holes of a row of hanging ears; a row of hanging ears and the piston rod heads of a row of telescopic jacks on the same side are spaced apart in the front-to-back direction.

[0015] The beneficial effects of the present invention compared to the prior art are:

[0016] The underground tunnel mold bag lifting and shaping device provided by the present invention realizes the working requirements of integrating automatic mold hanging and automatic shaping, and can reduce the number of original film hanging operations to 2 people. The front and rear lifting and shaping devices act as fulcrums for each other and move forward, reducing the workload of operators. When the front-end anchor bracket crossbeam is connected to the top, it can support the empty top area, greatly improving the efficiency of film hanging operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings:

[0018] Figure 1 It is a schematic structural diagram of the present invention when the pulling jack is in an extended state;

[0019] Figure 2 It is a schematic structural diagram of the present invention when the pulling jack is in a retracted state;

[0020] Figure 3 It is a structural diagram of the front-end anchor bracket;

[0021] Figure 4 It is a schematic diagram of the connection structure between the lifting and shaping mechanism, the pulling jack and the guide rod;

[0022] Figure 5 It is a structural diagram of the base;

[0023] Figure 6 It is a structural diagram of the lifting and shaping mechanism;

[0024] Among them, 1 is the front anchor bracket, 2 is the lifting and shaping mechanism, 3 is the pulling jack, 4 is the guide rod, 5 is the telescopic jack, 6 is the shaping frame, 7 is the rear end column, 8 is the base, 9 is the front end beam, 10 is the front end column, 11 is the clamp, 12 is the piston rod head, 13 is the base, 14 is the box body, 15 is the ear plate, 16 is the front box, 17 is the left box, 18 is the right box, 19 is the steel bar, 20 is the mold bag, 21 is the hanging ear, 22 is the pipe seat, 23 is the rear end beam, 24 is the clamp, 25 is the square groove, and 26 is the U-shaped long groove. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0026] like Figure 1As shown in FIG6 , the present invention provides an underground tunnel mold bag lifting and shaping device, comprising a front-end anchoring support 1, a lifting and shaping mechanism 2, a pulling jack 3, and a guide rod 4. The front-end anchoring support 1 is arranged at the front side of the lifting and shaping mechanism 2. The front-end anchoring support 1 and the lifting and shaping mechanism 2 are connected via the pulling jack 3. Two guide rods 4 are fixedly provided on the end face of the front-end anchoring support 1 close to the lifting and shaping mechanism 2. The two guide rods 4 extend toward one side of the lifting and shaping mechanism 2. Two guide grooves are provided on the lifting and shaping mechanism 2. The two guide rods 4 extend into the two guide grooves at one end away from the front-end anchoring support 1. The lifting and shaping mechanism 2 is continuously moved forward by controlling the extension and retraction of the pulling jack 3. The guide rods 4 move inside the guide groove to ensure the straightness of the forward movement of the lifting and shaping mechanism 2.

[0027] The front-end anchor bracket 1 includes a base 8 and a front-end crossbeam 9. The front-end crossbeam 9 is located above the base 8. The front-end crossbeam 9 and the base 8 are connected by two vertical front-end columns 10. The lower ends of the front-end columns 10 are fixed inside the base 8, and the upper ends of the front-end columns 10 are connected to the front-end crossbeam 9. The two front-end columns 10 are connected by a clamp 11. The lower end surface of the base 8 remains horizontal, and the lower end surface of the base 8 is tilted upward away from the side edge of the bracket shaping mechanism, which increases the contact area between the bottom surface of the base 8 and the ground and facilitates the forward movement of the base 8.

[0028] A set of lugs 15 are symmetrically provided on the left and right sides of the base 8. A pulling jack 3 is provided on the left and right sides of the lower end of the lifting and shaping mechanism 2. The cylinder bottoms of the two pulling jacks 3 are fixedly connected to the lifting and shaping mechanism 2, and the piston rod ends of the two pulling jacks 3 are hinged to the two sets of lugs 15 on both sides of the base 8 through pins.

[0029] Two tube seats 22 are symmetrically arranged on the left and right end surface of the base 8 facing the lifting and shaping mechanism 2. One end of the two guide rods 4 extends into the two tube seats 22, and the guide rods 4 are connected to the tube seats 22 by two locking pins.

[0030] The lifting and shaping mechanism 2 includes a telescopic jack 5, a shaping frame 6, and an anchoring assembly.

[0031] The shaping frame 6 is welded together from three boxes: a front box 16, a left box 17, and a right box 18. Each box includes a base 13 and a box body 14, which is fixed to the inner edge of the upper end surface of the base 13. A row of lugs 15 are provided at the outer edge of the upper end surface of the base 13 of the left and right boxes 17 and 18. Each lug 15 is hinged to one end of the cylinder bottom of the telescopic jack 5 via a pin. The piston rod head 12 of the telescopic jack 5 extends vertically upward, and the cylinder of the telescopic jack 5 is fixedly connected to the box body 14 via a clamp 24. An anchor assembly is provided on the outside of the front box 16, comprising a rear column 7 and a rear crossbeam. At the outer edge of the upper end surface of the base 13 of the front box body 16, two column sockets are symmetrically provided at the left and right ends. A rear end cross beam is provided above the base 13 of the front box body 16. The rear end cross beam and the base 13 of the front box body 16 are connected by two vertical rear end columns 7. The lower end of the rear end column 7 is fixed to the column socket on the base 13 of the front box body 16, and the upper end of the rear end column 7 is connected to the rear end cross beam; the cylinder body of the rear end column 7 is fixedly connected to the box body 14 of the front box body 16 by a clamp 24.

[0032] Two guide grooves are provided on the base 13 of the front box body 16 .

[0033] Square grooves 25 are arranged on the outer panels of the box bodies 14 of the left and right boxes 17, 18, and U-shaped long grooves 26 are arranged on the inner panels of the box bodies 14 of the left and right boxes 17, 18. The U-shaped long grooves 26 correspond to and communicate with the square grooves 25. The square grooves 25 facilitate the installation of fastening anchor rods on the mold bag 20, and the U-shaped long grooves 26 facilitate the removal of the fastening anchor rods from the mold bag 20 after solidification.

[0034] One end of the cylinder of the two pulling jacks 3 is respectively arranged inside the base 13 of the left box body 17 and the right box body 18. An ear plate 15 is fixed inside the base 13 of the left box body 17 and the right box body 18, and one end of the cylinder bottom of the pulling jack 3 is hinged to the ear plate 15.

[0035] A row of hanging ears 21 is fixedly provided at the upper edges of the left and right end surfaces of the mold bag 20, and a through hole is provided at the outer edge of the hanging ear 21. The through holes of a row of hanging ears 21 are coaxially arranged, and a steel bar 19 is inserted into the through holes of a row of hanging ears 21.

[0036] The piston rod heads 12 of the telescopic jacks 5 are provided with a U-shaped groove. The piston rod heads 12 of a row of telescopic jacks 5 are located at the same height, and the U-shaped grooves of the piston rod heads 12 are located on the same straight line.

[0037] A row of hanging ears 21 and a row of piston rod heads 12 of telescopic jacks 5 on the same side are spaced apart in the front-to-back direction.

[0038] The working principle of the present invention is:

[0039] Step 1: The operator first places the mold bag 20 inside the shaping frame 6, opens the mold bag 20, and passes the two steel bars 19 through the through holes of the hanging ears 21 arranged on both sides of the mold bag 20.

[0040] Step 2: Control the telescopic jacks 5 on both sides to extend synchronously, and the piston rod heads 12 of the telescopic jacks 5 rise to the same height as the hanging ears 21. The piston rod heads 12 of a row of telescopic jacks 5 are spaced apart from the hanging ears 21 in the same row on the same side. The U-shaped grooves of the piston rod heads 12 rise until they contact the steel bars 19. The telescopic jacks 5 continue to extend, and the piston rod heads 12 drive the mold bag 20 to continue to rise through the U-shaped groove until it is completely connected to the top.

[0041] Step 3: Place the grouting pipe at the grouting port of the mold bag 20 and tighten it. When the mold bag 20 is filled and solidified, the mold bag 20 is shaped by the three-sided box. Then, the telescopic jack 5 is fully retracted through the control valve, and the piston rod head 12 of the telescopic jack 5 is separated from the steel bar 19.

[0042] Step 4: Control the front column 10 of the front anchor bracket 1 to retract, allowing the front crossbeam 9 to separate from the roof. At this time, the rear column 7 is fully extended, and the rear crossbeam contacts the roof. Then control the pulling jack 3 to extend, and the front anchor bracket 1 is pulled forward by one step.

[0043] Step 5: Control the front column 10 of the front anchor bracket 1 to extend so that the front crossbeam 9 is completely connected to the top; then control the rear column 7 to retract, and the rear crossbeam is separated from the top beam, and control the pulling jack 3 to retract, driving the lifting and shaping mechanism 2 to move forward one step, thus completing a working cycle.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. The underground tunnel mold bag lifting and shaping device is characterized by: It comprises a front-end anchoring bracket (1) and a lifting and shaping mechanism (2), wherein the front-end anchoring bracket (1) is located at the front side of the lifting and shaping mechanism (2), and the front-end anchoring bracket (1) and the lifting and shaping mechanism (2) are connected via a pulling jack (3); the lifting and shaping mechanism (2) comprises a shaping frame (6), and the shaping frame (6) is welded by three-sided box bodies, and vertical telescopic jacks (5) are arranged on the outer sides of the left box body (17) and the right box body (18), and the piston rod head (12) at the upper end of the telescopic jack (5) is provided with a U-shaped groove, and an anchoring assembly is provided on the outer side of the front box body (16); Two guide rods (4) are fixedly provided on an end surface of the front anchoring bracket (1) close to the lifting and shaping mechanism (2), and the two guide rods (4) extend toward one side of the lifting and shaping mechanism (2). Two guide grooves are provided on the lifting and shaping mechanism (2), and the ends of the two guide rods (4) away from the front anchoring bracket (1) extend into the interior of the two guide grooves; Two guide grooves are provided on the base (13) of the front box body (16); The front-end anchoring bracket (1) comprises a base (8) and a front-end crossbeam (9), wherein the front-end crossbeam (9) is located above the base (8), and the front-end crossbeam (9) and the base (8) are connected via two vertical front-end columns (10), the lower ends of the front-end columns (10) are fixed inside the base (8), the upper ends of the front-end columns (10) are connected to the front-end crossbeam (9), and the two front-end columns (10) are connected via a hoop (11).

2. The underground tunnel mold bag lifting and shaping device according to claim 1 is characterized in that: The lower end surface of the base (8) remains horizontal, and the lower end surface of the base (8) is tilted upward away from the edge of one side of the bracket shaping mechanism.

3. The underground tunnel mold bag lifting and shaping device according to claim 1 is characterized in that: A group of ear plates (15) are symmetrically provided on the left and right sides of the base (8); a pulling jack (3) is provided on the left and right sides of the lower end of the lifting and shaping mechanism (2), the cylinder bottoms of the two pulling jacks (3) are fixedly connected to the lifting and shaping mechanism (2), and the piston rod ends of the two pulling jacks (3) are hinged to the two groups of ear plates (15) on both sides of the base (8) through pins.

4. The underground tunnel mold bag lifting and shaping device according to claim 1 is characterized in that: Each box body includes a base (13) and a box body (14), and the box body (14) is fixedly arranged at the inner edge of the upper end surface of the base (13); a row of ear plates (15) are provided at the outer edge of the upper end surface of the base (13) of the left box body (17) and the right box body (18), and each ear plate (15) is hinged to one end of the cylinder bottom of the telescopic jack (5) through a pin shaft, and the piston rod head (12) of the telescopic jack (5) extends vertically upward, and the cylinder of the telescopic jack (5) is fixedly connected to the box body (14) through a clamp (24).

5. The underground tunnel mold bag lifting and shaping device according to claim 4 is characterized in that: The anchoring assembly includes a rear end column (7) and a rear end crossbeam; two column sockets are symmetrically provided at the left and right ends of the outer edge of the upper end surface of the base (13) of the front side box body (16); a rear end crossbeam is provided above the base (13) of the front side box body (16); the rear end crossbeam and the base (13) of the front side box body (16) are connected through two vertical rear end columns (7); the lower end of the rear end column (7) is fixed to the column socket on the base (13) of the front side box body (16), and the upper end of the rear end column (7) is connected to the rear end crossbeam; the cylinder of the rear end column (7) is fixedly connected to the box body (14) of the front side box body (16) through a clamp (24).

6. The underground tunnel mold bag lifting and shaping device according to claim 1 is characterized in that: Square grooves (25) are arranged on the outer side panels of the box bodies (14) of the left box body (17) and the right box body (18), and U-shaped long grooves (26) are arranged on the inner side panels of the box bodies (14) of the left box body (17) and the right box body (18). The U-shaped long grooves (26) correspond to the square grooves (25) one by one and are connected to each other.

7. The underground tunnel mold bag lifting and shaping device according to claim 1 is characterized in that: A row of hanging ears (21) is fixedly provided at the upper edges of the left and right end surfaces of the mold bag (20), and a through hole is provided at the outer edge of the hanging ear (21). The through holes of the row of hanging ears (21) are coaxially arranged, and a steel bar (19) is inserted into the through holes of the row of hanging ears (21); the row of hanging ears (21) and the piston rod heads (12) of the row of telescopic jacks (5) on the same side are spaced apart in the front-to-back direction.

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