Unit support cross-hinge fixing device

Abstract

A unit support cross hinge fixing device, including roof beam and two groups of cross hinge column cap assemblies, two groups of cross hinge column cap assemblies are arranged between two main bars of roof beam and are arranged forward and backward along the direction of roof beam, by height change of two groups of cross hinge column cap assemblies, the adjustment of roof beam inclination is realized, so as to meet the inclination requirement of mine roadway and working face. When the inclination of roadway changes greatly, the advanced support does not need to be replaced, and the support measure is also reduced. The utility model not only greatly reduces the design and production cost of manufacturers, but also greatly reduces the production cost of coal mine and the labor intensity of workers, improves the work efficiency, reduces the safety hidden danger, and ensures the safe and efficient production of coal mine.

Description

Technical Field

[0001] This utility model relates to a unit support hinge fixing device, and more particularly to a cross hinge fixing device for an advanced unit support in a coal mining face roadway. Background Technology

[0002] Currently, most coal mines in my country still use two methods for advance support of fully mechanized mining faces: single hydraulic props combined with π-shaped steel beams and advance hydraulic supports. The beams and props rely on manual handling, resulting in high labor intensity, low efficiency, and limited support strength. Furthermore, safety hazards exist during dismantling and relocation. In recent years, mines have gradually phased out single hydraulic props and adopted unit supports for advance support of the upper and lower roadways of fully mechanized mining faces. Unit supports mainly consist of top beams, columns, and bases, with the columns securely connected between the top beams and bases. This simpler structure has led to their widespread use in roadways. Unit supports can be arranged longitudinally in single or double rows, or laterally. Unit supports are retrieved, transported, and used for roadway support work via unit support transport vehicles or monorail cranes. Compared to traditional single hydraulic props, this method significantly reduces the labor intensity of workers and effectively improves the support strength of the roadway. With the widespread application of unit supports, and based on the actual roadway conditions in various coal mines, requirements for adapting to roadway dip angles have been proposed. To meet the different dip angle requirements of various mines, multiple unit supports of the same model have been designed. To increase interchangeability, reduce design costs, achieve standardized design and production, and lower management costs, a technical problem that needs to be solved is to develop a fixed device structure design that can adapt to multiple dip angle requirements. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a cross-hinged fixing device for a unit bracket that can adapt to multiple tilt angle requirements.

[0004] The technical solution of this utility model to solve its technical problem is:

[0005] A unit support cross-hinged fixing device includes a top beam (8) and two sets of cross-hinged column cap assemblies. The two sets of cross-hinged column cap assemblies are arranged between the two main reinforcing bars of the top beam (8) and are arranged back and forth along the direction of the top beam (8). The inclination angle of the top beam (8) can be adjusted by changing the height of the two sets of cross-hinged column cap assemblies to meet the inclination angle requirements of the mine roadway direction and the working face direction.

[0006] As a preferred embodiment of this utility model, the cross-hinged column cap assembly consists of a cross-hinged column cap (2), pressure block I (1), pressure block II (3), a smooth pin (4), a pin shaft (5), and a cotter pin (6). The cross-hinged column cap (2) is formed by welding ear plates to the front, back, left, and right sides of the column cap. There are pin shaft holes on the ear plates. Four reinforcing plates are welded between the two main reinforcing bars of the top beam (8). The two cross-hinged column caps (2) are respectively set between the front two and the back two transverse reinforcing bars. Pressure block I (1) is installed in the middle of the front and back ear plates of the cross-hinged column cap (2). Pressure block II (3) is installed in the cross-hinged column cap. (2) The middle of the left and right ear plates; there are pin holes on the ear plates and the pressure blocks, and the smooth pin (4) is located below the pressure block; the pin shaft (5) passes through the ear plate and the pressure block hole of the cross hinged column cap (2) to fix the pressure block 1 (1) and the pressure block II (3); the cotter pin (6) passes through the pin shaft (5) hole to fix it. There are spare parts of various thicknesses for the pressure block I (1) and the pressure block II (3). The maximum inclination angle of the top beam (8) is adjusted by changing the size of L1 and L2 by replacing the pressure block 1 (1) and the pressure block II (3) of different sizes. Then, by changing the position of the smooth pin (4), the inclination angle requirements of the mine roadway direction and the working face direction are met.

[0007] Compared with the prior art, the present invention has the following advantages:

[0008] 1. The cross-hinged fixing device for unit bracket of this utility model has a simple structure and is easy to operate.

[0009] 2. This utility model provides a top beam structure that can meet different tilt angle ranges by replacing the pressure blocks;

[0010] 3. This utility model can reduce the types of structural components, greatly improve interchangeability, realize standardized design and production, and benefit the mine's production management and wide applicability.

[0011] 4. This utility model can meet the needs of different working faces of the mine by replacing fewer parts, thereby reducing the mine's procurement and production costs, shortening the production preparation time, and improving production efficiency.

[0012] 5. According to the changes in the mine roadway, the unit support does not need to be raised to the surface. The parts can be replaced or the rotation direction of the column and piston can meet the usage requirements, which greatly reduces the production cost and the labor intensity of workers, and improves the production efficiency.

[0013] 6. This utility model can adjust the angle according to the roadway conditions, and the top beam has a good roof connection effect, which greatly improves the safety factor of the roadway and ensures safe and efficient production at the working face. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 Front view of the structural schematic diagram of component 2;

[0016] Figure 3 yes Figure 2 Sectional view along line B-B;

[0017] Figure 4 It is an assembly drawing of a top beam, pressure block, smooth pin, pin shaft and column;

[0018] Figure 5 It is a diagram showing the positional relationship of the top beam, the cross-hinged column cap, the pressure block, the pin, and the smooth pin.

[0019] In the diagram: 1---Pressure block 1, 2---Cross hinged column cap, 3---Pressure block 2, 5---Smooth pin, 5---Pin shaft, 6---Cotter pin, 7---Column, 8---Top beam. Detailed Implementation

[0020] As shown in the figure, a unit support cross-hinged fixing device includes a top beam 8 and two sets of cross-hinged column cap assemblies. The two sets of cross-hinged column cap assemblies are set between the two main reinforcing bars of the top beam and are arranged back and forth along the direction of the top beam. By changing the height of the two sets of cross-hinged column cap assemblies, the inclination angle of the top beam 8 can be adjusted to meet the inclination angle requirements of the mine roadway and the working face.

[0021] The cross-hinged column cap assembly consists of a cross-hinged column cap 2, pressure block I1, pressure block II3, a smooth pin 4, a pin shaft 5, and a cotter pin 6. The cross-hinged column cap 2 is formed by welding ear plates to the front, back, left, and right sides of the column cap. Pin shaft holes are present on the ear plates. Four reinforcing plates are welded between the two main reinforcing bars of the top beam 8. Two cross-hinged column caps 2 are respectively positioned between the front two and rear two transverse reinforcing bars. Pressure block I1 is installed in the middle of the front and back ear plates of the cross-hinged column cap 2; pressure block II3 is installed on the left and right ear plates of the cross-hinged column cap 2. In the middle of the plate; there are pin holes on the ear plate and the pressure block, and the smooth pin 4 is located below the pressure block; the pin shaft 5 passes through the ear plate and the pressure block hole of the cross hinge post cap 2 to fix the pressure block 11 and the pressure block II 3; the cotter pin 6 passes through the hole of the pin shaft 5 to fix it. There are spare parts of various thicknesses for the pressure block I 1 and the pressure block II 3. The maximum inclination angle of the top beam 8 is adjusted by changing the size of L1 and L2 by replacing the pressure block 11 and the pressure block II 3 of different sizes. Then, by changing the position of the smooth pin 4, the inclination angle requirements of the mine roadway direction and the working face direction are met.

Claims

1. A unit support cross hinged fixture comprising a top beam (8) and two sets of cross hinged post cap assemblies characterised in that, Two sets of cross-hinged column cap assemblies are set between the two main reinforcement bars of the top beam (8) and are arranged back and forth along the direction of the top beam (8). By changing the height of the two sets of cross-hinged column cap assemblies, the inclination angle of the top beam (8) can be adjusted to meet the inclination angle requirements of the mine roadway and working face.

2. A unit support cross-hinged fixture as claimed in claim 1, wherein, The cross-hinged column cap assembly consists of a cross-hinged column cap (2), pressure block I (1), pressure block II (3), a smooth pin (4), a pin shaft (5), and a cotter pin (6). The cross-hinged column cap (2) is formed by welding ear plates to the front, back, left, and right sides of the column cap. There are pin shaft holes on the ear plates. Four stiffening plates are welded between the two main reinforcing bars of the top beam (8). The two cross-hinged column caps (2) are respectively set between the front two and the back two transverse reinforcing bars. Pressure block I (1) is installed in the middle of the front and back ear plates of the cross-hinged column cap (2). Pressure block II (3) is installed on the left and right ears of the cross-hinged column cap (2). In the middle of the plate; there are pin holes on the ear plate and the pressure block, and the smooth pin (4) is located below the pressure block; the pin shaft (5) passes through the ear plate and the pressure block hole of the cross hinged column cap (2) to fix the pressure block 1 (1) and the pressure block II (3); the cotter pin (6) passes through the pin shaft (5) hole to fix it. There are spare parts of various thicknesses for the pressure block I (1) and the pressure block II (3). The maximum inclination angle of the top beam (8) is adjusted by changing the size of L1 and L2 by replacing the pressure block 1 (1) and the pressure block II (3) of different sizes. Then, by changing the position of the smooth pin (4), the inclination angle requirements of the mine roadway direction and the working face direction are met.

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