Large lateral wall transition support for coal mine

Abstract

The utility model provides a large lateral wall transition support for a coal mine, which comprises a top beam, two sides of the top beam are respectively provided with a fixed side guard plate, the lower end of each fixed side guard plate is hinged with a lateral wall plate, a lateral wall jack is arranged between the lateral wall plate and the fixed side guard plate, and the lateral wall jack is used for adjusting the vertical angle of the lateral wall plate. According to the large lateral wall transition support for the coal mine, the top beam body is arranged to be of a left-right symmetrical structure, so that lateral wall plates can be interchanged left and right, and the installation efficiency of working face changing is improved; and meanwhile, the number of types of spare parts of the side wall plate is reduced, the general rate of the parts is improved, and the requirements of daily maintenance and replacement are met.

Description

Technical Field

[0001] The utility model relates to the field of coal mine supports, in particular to a large side wall transition support for coal mines. Background Art

[0002] For large mining height working faces, due to the large height difference between the roadway height and the working face height, the transition distance from the roadway height to the working face height is long, the coal mining efficiency and recovery efficiency are low, resulting in a waste of resources. The large side wall transition support can achieve a rapid transition from the working face height to the roadway height. However, the drum of the coal mining machine is circular in shape. When it runs to the vertical drop position between the roadway and the working face, the roadway roof after cutting is semi-circular, which conflicts with the right angle of the side wall top plate of the large side wall transition support. As a result, the side wall top plate of the large side wall transition support and the roadway roof cannot be fully fitted and supported, causing damage to the side wall of the transition support. At the same time, the side walls of the existing large side wall supports are mostly non-replaceable. The side walls and the top beam are an integrated structure or an asymmetric structure, which cannot be interchanged left and right according to the direction of the working face. At the same time, if the side wall is damaged, the entire beam needs to be replaced, and the replacement cost is extremely high.

[0003] The utility model patent with authorization announcement number CN202023574U discloses a large-drop transition support, including a top beam and columns. One side of the top beam is hingedly connected to a side baffle, and an oblique push jack is connected between the side baffle and the top beam. When this large-drop transition support is applied to coal seams with a relatively large working face drop, the side with the side baffle can be directed toward the shorter end support, and the other side toward the taller working face support. This can not only solve the problems of large coal seam drop and mining support, but also prevent a large amount of waste in large-drop coal seams. However, the side baffles cannot be interchanged left and right. Utility Model Content

[0004] In order to improve the installation efficiency of working face replacement, reduce the number of types of side panel spare parts, and improve the parts commonality, the technical solution adopted by the utility model is: a large side panel transition bracket for coal mines, including a top beam, fixed side guard plates are respectively provided on both sides of the top beam, the lower end of the fixed side guard plate is hinged with a side panel, and a side panel jack is provided between the side panel and the fixed side guard plate, and the side panel jack is used to adjust the vertical angle of the side panel.

[0005] Based on the above, in order to avoid the arc position of the tunnel roof, make the side panels more closely support the coal seam roof, improve the effect of supporting the roof, and reduce the probability of damage to the side panels by the coal seam roof, the top edge of the fixed side guard plate is set obliquely to form an oblique edge for avoiding the arc of the tunnel roof.

[0006] Based on the above, in order to facilitate installation and adjustment, a pair of side panels are hinged to the lower end of each fixed side guard plate, and the pair of side panels are arranged along the length direction of the fixed side guard plate.

[0007] Based on the above, in order to facilitate interchangeability and assembly, the specifications of a pair of fixed side guard plates are the same, and the specifications of the plurality of side panels are the same.

[0008] Based on the above, in order to improve the supporting effect, the length of the fixed side guard plate is greater than the length of the side support plate.

[0009] Based on the above, in order to improve the support safety, the sum of the lengths of a pair of side panels is equal to the length of the fixed side guard plate.

[0010] Based on the above, in order to expand the support range and improve operational safety, a front support plate is further provided at one end of the top beam.

[0011] Based on the above, the other end of the top beam is connected to a shielding beam, the lower end of the shielding beam is connected to a front link and a rear link, the bottom of the top beam is connected to a column, the lower end of the column is connected to a base, and the lower end of the front link and the lower end of the rear link are respectively connected to the base.

[0012] The present invention has substantial features and progress compared to the prior art. Specifically, the large side wall transition bracket for coal mines provided by the present invention designs the top of the left fixed side guard plate and the top of the right fixed side guard plate of the transition bracket into beveled shapes respectively. The beveled edges can avoid the arc position of the tunnel roof, so that the side wall plate can better fit the support of the coal seam roof, improve the effect of supporting the roof, and reduce the probability of damage to the side wall plate by the coal seam roof.

[0013] At the same time, by setting the top beam body as a left-right symmetrical structure, the side panels can be interchanged left and right, which improves the installation efficiency of changing the working surface; at the same time, it also reduces the number of side panel spare parts, improves the parts commonality, and meets the needs of daily maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the side structure of a large side wall transition support for coal mines provided by the utility model.

[0015] Figure 2 The utility model is a schematic diagram of the end face structure of a large side wall transition bracket for coal mines provided by the present invention.

[0016] Figure 3 The utility model is a partial structural diagram of a large side wall transition support for coal mines provided by the utility model.

[0017] Figure 4The utility model is a schematic diagram of the local structure of a large side wall transition support for coal mines in a supporting state.

[0018] In the figure: 1. Top beam; 2. Front support plate; 3. Large side support mechanism; 4. Protective beam; 5. Front connecting rod; 6. Rear connecting rod; 7. Column; 8. Base; 9. Top beam welded body; 10. Left fixed side guard plate; 11. Right fixed side guard plate; 12. Side plate; 13. Side jack; 14. Side plate connecting pin; 15. Jack connecting pin; 16. Tunnel working face; 17. Tunnel; 18. Coal mining machine; 19. Bevel. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0020] Example 1

[0021] This embodiment provides a large side wall transition support for coal mines, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the structure comprises a top beam 1, with fixed side guards provided on either side of the top beam 1. The lower ends of the fixed side guards are hingedly connected to side panels 12 via side panel connection pins 14. Side jacks 13 are provided between the side panels 12 and the fixed side guards. The side jacks 13 are used to adjust the vertical angle of the side panels 12. The telescopic ends of the side jacks 13 are connected to the side panels 12 via jack connection pins 15.

[0022] Specifically, in order to avoid the arc position of the roadway roof, so that the side panels 12 can better support the coal seam roof, improve the effect of supporting the roof, and reduce the probability of damage to the side panels by the coal seam roof, the top edge of the fixed side guard plate is set obliquely to form an oblique edge 19 for avoiding the arc position of the roadway roof. Among them, for easy distinction, according to the installation position, the fixed side guard plate can be divided into a left fixed side guard plate 10 and a right fixed side guard plate 11.

[0023] Specifically, if Figure 1 As shown, the other end of the top beam 1 is connected to a shield beam 4, the lower end of which is connected to a front link 5 and a rear link 6. The bottom of the top beam 1 is connected to a column 7, the lower end of which is connected to a base 8. The lower ends of the front link 5 and the rear link 6 are respectively connected to the base 8.

[0024] The lower portion of the top beam 1 is provided with a top beam weldment 9 for connecting the shield beam 4 and the uprights 7. The shield beam 4, uprights 7, front connecting rod 5, rear connecting rod 6, and base 8 form a hydraulic support. The side panel 12, left fixed side guard plate 10, right fixed side guard plate 11, and side jack 13 form the large side panel mechanism 3.

[0025] Example 2

[0026] This embodiment provides a large side panel transition support for coal mines. The main difference from Example 1 is that, in this embodiment, to facilitate installation and adjustment, a pair of side panels 12 are hingedly connected to the lower end of each fixed side panel. The pair of side panels 12 are arranged along the length of the fixed side panel. To facilitate interchangeability and assembly, the pair of fixed side panels have the same specifications, and the multiple side panels 12 have the same specifications.

[0027] Example 3

[0028] This embodiment provides a large side support transition support for coal mines. The main difference from Example 1 is that in this embodiment: to improve the support effect, the length of the fixed side guard plate is greater than the length of the side guard plate 12. To improve support safety, the sum of the lengths of a pair of side guard plates 12 is equal to the length of the fixed side guard plate.

[0029] Example 4

[0030] This embodiment provides a large side transition support for coal mines. The main difference from Example 1 is that in this embodiment: in order to expand the support range and improve operational safety, a front support plate 2 is further provided at one end of the top beam 1.

[0031] Specifically, during installation, the coal mine arranges large side wall transition supports at both ends of the tunnel working face 16, close to the inside of the tunnel 17. When the hydraulic support is lowered into the well, two sets of large side wall mechanisms 3 and hydraulic supports are lowered into the well separately. After the support is installed, one set of side wall panels 12 is installed on the hydraulic support arranged on the left side of the tunnel working face 16. First, align the side wall panel 12 with the left fixed side guard plate 10 on the top beam 1, and insert the side panel connecting pin 14 to fix it, and then connect the side wall jack 13 to the side wall panel 12 through the jack connecting pin 15. The side wall jack 13 controls the vertical angle of the side wall panel 12. Similarly, another set of side wall panels 12 is installed on the right side of the hydraulic support in the same way. If the side wall panels are damaged during use, due to the same specifications, the side wall panels on both sides can be used interchangeably without distinguishing the direction.

[0032] After the coal shearer 18 cuts a piece of coal, the transition support is lowered and moved toward the coal wall, and then raised to support the roof after moving forward a step. Figure 2As shown, the tunnel roof is in an arc shape after being cut by the coal mining machine, and the tops of the left fixed side guard plate 10 and the right fixed side guard plate 11 of the transition bracket are beveled, which can avoid the arc position of the tunnel roof and achieve the effect of supporting the roof.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for protection of the utility model.

Claims

1. A large side rib transition support for coal mines, including a top beam, characterized in that: Fixed side guard plates are respectively provided on both sides of the top beam, and side panels are hinged at the lower ends of the fixed side guard plates. Side jacks are provided between the side panels and the fixed side guard plates, and the side jacks are used to adjust the vertical angles of the side panels.

2. The large side rib transition support for coal mines according to claim 1, characterized in that: The top edge of the fixed side guard plate is arranged obliquely to form an oblique edge for avoiding the arc of the tunnel roof.

3. The large side rib transition support for coal mines according to claim 1, characterized in that: A pair of side panels are hinged to the lower end of each fixed side guard plate, and the pair of side panels are arranged along the length direction of the fixed side guard plate.

4. The large side rib transition support for coal mines according to claim 3, characterized in that: The specifications of a pair of the fixed side guard plates are the same, and the specifications of the plurality of side panels are the same.

5. The large side rib transition support for coal mines according to claim 1, 2, 3 or 4, characterized in that: The length of the fixed side guard plate is greater than the length of the side support plate.

6. The large side rib transition support for coal mines according to claim 3 or 4, characterized in that: The sum of the lengths of the pair of side panels is equal to the length of the fixed side guard plate.

7. The large side rib transition support for coal mines according to claim 1, 2, 3 or 4, characterized in that: A front support plate is also provided at one end of the top beam.

8. The large side rib transition support for coal mines according to claim 7, characterized in that: The other end of the top beam is connected to a shield beam, the lower end of the shield beam is connected to a front link and a rear link, the bottom of the top beam is connected to a column, the lower end of the column is connected to a base, and the lower end of the front link and the lower end of the rear link are respectively connected to the base.

Images