Gate-type fixed frame grouping and connecting frame supporting system with preset coal sliding port

Abstract

The gate-type fixed frame grouping connecting frame supporting system comprises a roadway, arch support bodies are fixed to the top and the right side of the roadway, the arch support bodies are connected side by side to form connecting frames, the coal sliding opening is reserved between every two adjacent connecting frames, a low-side lock beam is fixed to the left side of the roadway, and a low-side lock beam is fixed to the right side of the roadway. The low-side lock beam is fixedly connected with the arch-shaped bracket main body through a hoop bolt device; the above structures are connected into a whole to support the advanced fully-mechanized coal mining roadway, it is guaranteed that fully-mechanized coal mining equipment is reliably transported to the open-off cut and lowered to the working face to be installed, supporting is safe and reliable, withdrawing is convenient, more than 200000 yuan of economic benefits can be created, and social benefits are remarkable.

Description

Technical Field

[0001] The invention relates to the field of mine pressure roof support, in particular to a portal fixed frame grouped connected frame support system with a preset coal chute. Background Art

[0002] The structures of tunnel protection along the goaf mainly include the following forms: sandbag wall is suitable for tunnel protection along the goaf of nearly horizontal coal seams, but it is easy to collapse the sand wall when there is a large pressure, which is unsafe and has poor support stability; cement pier wall tunnel protection along the goaf, the wall is easy to collapse and explode when the working face is exposed to water, the safety performance is poor, and the pressure bearing capacity is unreliable; flexible mold tunnel protection along the goaf, the wall is prone to explosion with a large inclination angle, the tunnel maintenance volume is large, many people are required, the materials cannot be recycled and reused, the cost is high, and it cannot adapt well to the steeply inclined and large mining height comprehensive mining working face.

[0003] Based on the above problems, the commonly used support structures at present are mostly metal beams to protect the tunnels along the air. However, this support structure requires lowering the elevation by 15m to dig a new tunnel for the second working face as the return air tunnel for the next working face. It takes 5 months to dig a new tunnel after lowering the elevation, which adds a safety risk pressure. More than 40,000 tons of coal resources cannot be recycled and the support materials cannot be recycled.

[0004] Therefore, there is an urgent need for a gantry fixed frame grouped connecting frame support system with a pre-set coal chute, which can solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a portal frame grouped connecting frame support system with a preset coal chute, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a gantry fixed frame grouped connecting frame support system with a preset coal chute, comprising a tunnel, wherein arch-shaped support bodies are fixed on the top and right side of the tunnel, the arch-shaped support bodies are connected side by side to form a connecting frame, a coal chute is reserved between two adjacent groups of the connecting frames, and a short side locking beam is fixed on the left side of the tunnel, and the short side locking beam is fixedly connected to the arch-shaped support body through a clamp latch.

[0008] By adopting the above technical solution, it is possible to empty the tunnel ahead of the front line and mine without leaving coal pillars, so that more coal can be mined, and the support is safe and reliable, and the withdrawal is convenient. It can create economic benefits of more than 20 million yuan, with significant safety and social benefits.

[0009] Preferably, the bow-shaped support body includes a leg beam, a waist beam and a shield beam, and the three are sequentially connected to form a bow-shaped structure.

[0010] By adopting the above technical solution and taking it as the main body of the tunnel support installation design, the effect of rapid installation is achieved. The oil cylinder and hoist can also be used to assist in pulling the frame during installation, thus realizing rapid installation under complex on-site conditions.

[0011] Preferably, the leg beams, the waist beams and the shield beams are all made of mining I-beams.

[0012] By adopting the above technical solution and using No. 12 mining I-beam as the supporting material, it is not only low-cost but also highly versatile.

[0013] Preferably, each group of the connecting frames is connected by a steel wire rope, and the steel wire rope is connected to the bow-shaped bracket body through a clamping plate assembly.

[0014] By adopting the above technical solution, each group of the connecting frames uses 4 Ф26 steel wire ropes to connect the upper, middle and lower parts of the bracket, namely the leg beams, the waist beams and the shield beams, so as to maintain the stability of the bracket posture during installation and flexible adjustment.

[0015] Preferably, the clamping plate assembly includes a fixed clamping plate, which is connected to the bow-shaped bracket body through a first bolt and clamps and fixes the steel wire rope.

[0016] By adopting the above technical solution, the steel wire rope can be quickly tightened and fixed.

[0017] Preferably, a connecting steel beam is connected between two adjacent groups of the connecting frames.

[0018] By adopting the above technical solution, after the frame is installed and formed, No. 12 channel steel is clamped on the support shield beam as a connecting steel beam. The support is used as the support body skeleton to form a support system shield beam that is not deformed as a whole under stress.

[0019] Preferably, a bracket fixture is fixed at the coal chute.

[0020] By adopting the above technical solution, the support of the coal chute is connected and supported, which strengthens the stability of the coal chute support and meets the design requirements of no intervention in the protection of the tunnel along the air in advance.

[0021] Preferably, the low side locking beam is fixed to the tunnel by an anchor cable.

[0022] By adopting the above technical solution, No. 12 mining I-beam is used as the low side locking beam and fixed by anchor cables, so as to achieve the effect of decomposing the top plate by pressure, avoid the bottom plate breaking due to mining pressure and the phenomenon of the support leg tilting to the left or right.

[0023] Preferably, the clamp pin latch comprises a connecting seat, one end of which is connected to the short-side locking beam via a second bolt, and the other end of which is hinged to the bow-shaped bracket body via a pin shaft.

[0024] By adopting the above technical solution, the clamp pin latch allows the bracket to be freely inserted into the connecting seat, and then inserted into the Ф50×220 pin shaft to achieve the effect of easy installation and easy withdrawal, so that the movable frame in the beam support body can decompose the force on the fixed frame to achieve balanced force on the frame.

[0025] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0026] 1. Solve the problem of bending and deformation of the support frame under stress and drilling (the top plate is used to transmit the pressure without falling down the frame);

[0027] 2. Solve the problem of single-frame installation force tilt and interaction without stable frame connector (the portal frame can achieve mutual support, force decomposition and force transmission);

[0028] 3. Solve the load-bearing and force decomposition problem of a single frame bearing the roof collapse and the gangue frame not sliding up and down (the arch-shaped frame body and the gangue on the frame slide down to form a gangue cushion buffer behind the frame);

[0029] 4. Solve the technical problem of deformation of the support under pressure and hard squeeze (steel wire rope connected to the top plate to stabilize the frame, steel and soft combination, softness overcomes steel, avoiding squeezing deformation);

[0030] 5. First fix the frame to solve the problem of group force transmission, and install the frame pulling cylinder with fixed points to achieve quick frame installation;

[0031] 6. The frame is connected by a clamp and a latch, which makes the retrieval quick and convenient, and the frames can be recycled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 A schematic cross-sectional view of a gantry-type fixed frame grouped connected frame support system with a preset coal chute provided by the present invention;

[0034] Figure 2 for Figure 1 A magnified view of part A;

[0035] Figure 3 A top view of a gantry-type fixed frame grouped connected frame support system provided by the present invention with a preset coal chute;

[0036] Figure 4A schematic diagram of the structure of a clamp latch in a gantry fixed frame grouped connected frame support system with a preset coal chute provided by the present invention;

[0037] In the figure: 1: tunnel, 2: bow-shaped support body, 21: leg beam, 22: waist beam, 23: shield beam, 3: connecting frame, 4: coal chute, 5: low side lock beam, 6: clamp pin device, 61: connecting seat, 62: second bolt, 63: pin shaft, 7: wire rope, 8: splint assembly, 81: fixed splint, 82: first bolt, 9: connecting steel beam, 10: support fixer, 11: anchor cable. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The object of the present invention is to provide a portal frame grouped connected frame support system with a preset coal chute, so as to solve the problems existing in the prior art.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Embodiment 1:

[0042] This embodiment provides a gantry fixed frame grouped frame support system with a preset coal chute, such as Figure 1-4 As shown, it includes a tunnel 1, and an arch-shaped support body 2 is fixed on the top and right side of the tunnel 1. The arch-shaped support body 2 is connected side by side to form a connecting frame 3. A coal chute 4 is reserved between two adjacent groups of connecting frames 3. A low-wall locking beam 5 is fixed on the left side of the tunnel 1. The low-wall locking beam 5 is fixedly connected to the arch-shaped support body 2 through a clamp latch 6. The front-line empty tunnel can be protected, and mining without leaving coal pillars can be carried out, so that more coal can be mined, and the support is safe and reliable, and the withdrawal is convenient, which can create economic benefits of more than 20 million yuan and significant safety and social benefits.

[0043] The economic benefits that this application can bring are as follows:

[0044] 1. The 31113 transport lane has been protected along the airside. This can reduce the labor, material, equipment, water and electricity, and safety management costs of a new 800m lane excavation, saving 800m of lane excavation × 4,000 yuan / m (cost per meter of lane excavation) = 3.2 million yuan;

[0045] 2. Shidonggou Coal Mine 31113 working face adopts gob-side entry retention, cancels the section coal pillar (17m coal pillar), realizes coal pillar-free mining, recovers 35,000 tons of coal resources, calculated at 380 yuan / ton. It can create economic benefits: 35,000 tons × 380 yuan / ton = 13.3 million yuan;

[0046] 3. Reduce production impact and secondary tunnel protection investment: tunnel protection labor cost 400,000 yuan / face + 15,000 tons × 380 yuan / ton = 6.1 million yuan;

[0047] After this application is successfully applied in production, it will create economic benefits: 3.2 million yuan + 13.3 million yuan + 6.1 million yuan = 22.6 million yuan.

[0048] As an implementation method, the bow-shaped support body 2 includes a leg beam 21, a waist beam 22 and a shield beam 23, and the three are connected in sequence to form a bow-shaped structure, and then cooperate with the low-side locking beam 5 to form a portal fixed frame. It is used as the main body of the tunnel support installation design to form a good support system.

[0049] As an implementation mode, the leg beam 21, the waist beam 22, and the shield beam 23 are all made of mining I-beams, and specifically, No. 12 mining I-beams can be used as support materials, which is not only low in cost but also highly versatile.

[0050] As an implementation mode, each set of connecting frames 3 is connected by a steel wire rope 7 , and the steel wire rope 7 is connected to the bow-shaped bracket body 2 through a clamping plate assembly 8 .

[0051] The clamping plate assembly 8 includes a fixed clamping plate 81 , which is connected to the bow-shaped bracket body 2 via a first bolt 82 and clamps and fixes the steel wire rope 7 .

[0052] Each set of connecting frames 3 uses 4 Ф26 steel wire ropes to connect the upper, middle and lower parts of the bracket, namely the leg beams, waist beams and cover beams, so as to maintain the stability of the bracket during installation and allow flexible adjustment.

[0053] As an implementation method, a connecting steel beam 9 is connected between two adjacent groups of connecting frames 3. After the frame is installed and formed, No. 12 channel steel is clamped on the support shielding beam as the connecting steel beam 9. The support is used as a support body skeleton to form a support system shielding beam so that the entire beam is not deformed under stress.

[0054] As an implementation method, a support fixture 10 is fixed at the coal chute 4 to support the coal chute support, thereby strengthening the stability of the coal chute support and meeting the design requirements of no intervention in the advance protection of the goaf.

[0055] As an implementation method, the low wall locking beam 5 is fixed to the tunnel 1 by an anchor cable 11. No. 12 mining I-beam is used as the low wall locking beam and is fixed by anchor cables, thereby achieving the effect of decomposing the top plate pressure, avoiding the bottom plate from breaking due to mining pressure and the phenomenon of the support leg tilting to the left or right.

[0056] As an implementation mode, the clamp pin latch 6 includes a connecting seat 61, one end of the connecting seat 61 is connected to the short side locking beam 5 through a second bolt 62, and the other end of the connecting seat 61 is hinged to the bow-shaped bracket body 2 through a pin shaft 63. The clamp pin latch allows the bracket to freely penetrate into the connecting seat, and then penetrate into the Ф50×220 pin shaft to achieve the effect of easy installation and easy withdrawal, so that the movable frame can decompose the force on the fixed frame in the beam support body, so as to achieve balanced force on the frame.

[0057] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A gantry frame grouped frame support system with a pre-set coal chute, comprising a tunnel (1), characterized in that: The top and right side of the tunnel (1) are fixed with an arch-shaped support body (2), the arch-shaped support bodies (2) are connected side by side to form a connecting frame (3), and a coal chute (4) is reserved between two adjacent groups of the connecting frames (3). A short side locking beam (5) is fixed on the left side of the tunnel (1), and the short side locking beam (5) is fixedly connected to the arch-shaped support body (2) via a clamp latch (6).

2. The gantry frame grouped connecting frame support system with a preset coal chute according to claim 1 is characterized in that: The arch-shaped support body (2) comprises a leg beam (21), a waist beam (22) and a shield beam (23), and the three are sequentially connected to form an arch-shaped structure.

3. The gantry frame grouped connecting frame support system with a preset coal chute according to claim 2 is characterized in that: The leg beam (21), the waist beam (22), and the shield beam (23) are all made of mining I-beams.

4. The gantry frame grouped connecting frame support system with a preset coal chute according to claim 1 is characterized in that: Each group of the connecting frames (3) is connected via a steel wire rope (7), and the steel wire rope (7) is connected to the bow-shaped bracket body (2) via a clamping plate assembly (8).

5. The portal frame grouped connecting frame support system with a preset coal chute according to claim 4 is characterized in that: The clamping plate assembly (8) comprises a fixed clamping plate (81), wherein the fixed clamping plate (81) is connected to the bow-shaped bracket body (2) via a first bolt (82) and clamps and fixes the steel wire rope (7).

6. The portal frame grouped connecting frame support system with a preset coal chute according to claim 1 is characterized in that: A connecting frame steel beam (9) is connected between two adjacent groups of connecting frames (3).

7. The portal frame grouped connecting frame support system with a preset coal chute according to claim 1 is characterized in that: A support fixture (10) is fixed at the coal chute (4).

8. The portal frame grouped connecting frame support system with a preset coal chute according to claim 1 is characterized in that: The low side locking beam (5) is fixed to the tunnel (1) via an anchor cable (11).

9. The portal frame grouped connecting frame support system with a preset coal chute according to claim 1 is characterized in that: The clamp pin latch (6) comprises a connecting seat (61), one end of the connecting seat (61) is connected to the short side locking beam (5) via a second bolt (62), and the other end of the connecting seat (61) is hinged to the bow-shaped bracket body (2) via a pin shaft (63).

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