A hydraulic support suitable for steeply inclined coal seam above 60 degrees

Abstract

The utility model provides a kind of hydraulic support suitable for more than 60 above acute inclined coal seam, including base, roof beam and stabilizing mechanism, the stabilizing mechanism includes mutually matched guide box and guide beam, the guide beam moves up and down in the guide box, the guide box is located in the base rear end, the guide beam is connected in the roof beam, the guide box, the guide beam and the roof beam are used to prevent gangue to surge into the interior of hydraulic support.This application uses guide box and guide beam as stabilizing mechanism to replace traditional four-bar linkage mechanism, can guarantee the stability of hydraulic support when lifting, with higher structural strength, adapt to the large inclination state of hydraulic support in acute inclined working face, and guide box and guide beam can prevent gangue from surging from the rear of hydraulic support, efficient gangue blocking and space saving, suitable for acute inclined coal seam mining.

Description

Technical Field

[0001] This utility model relates to the field of coal mine support equipment, specifically, to a hydraulic support adapted to coal seams with a steep inclination of 60° or more. Background Technology

[0002] Existing technologies for steeply inclined supports employ traditional two-column shield-type hydraulic supports, with the rear using a traditional four-bar linkage, such as the diamond-shaped hydraulic support for steeply inclined coal seam submerged pseudo-inclined mining faces disclosed in Chinese invention patent CN201110291767.0. This support adapts to the characteristics of submerged pseudo-inclined coal mining processes by splitting the traditional four-bar linkage into two parts. Furthermore, the top beam and base are designed as diamond structures. Adjustment devices, such as balance adjustment cylinders hinged to the top beam and shield beam, are used to adjust the support's state, ensuring a stable beam end distance to prevent roof collapse and maintaining unobstructed pedestrian access in front of the hydraulic support, thus creating a stable beam end distance and pedestrian space.

[0003] However, the hydraulic supports with large inclination angles used in the aforementioned documents, as well as most existing ones, still have the following problems: First, the linkage mechanism has poor sealing effect on the rock, making it easy for the rock from the old pond behind the hydraulic support to flow to the sidewalk. Second, the linkage mechanism extends backward to form a protrusion, which can easily damage the hydraulic support mechanism when the rock collapses down along the pseudo-inclination working surface. Third, the linkage mechanism occupies the front and rear space inside the hydraulic support, making it difficult to arrange a safe pedestrian passage in a steeply inclined working surface. Fourth, the pseudo-inclination working surface causes the linkage mechanism to tilt at a large angle, requiring high structural connection strength.

[0004] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a hydraulic support suitable for steeply inclined coal seams of 60° or more. It uses a guide box and guide beam as stabilizing mechanisms to replace the traditional four-bar linkage, resulting in a stable structure, efficient rock blocking, and space-saving design, making it suitable for steeply inclined coal seam mining.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a base, a top beam, and a stabilizing mechanism. The stabilizing mechanism includes a guide box and a guide beam that cooperate with each other. The guide box is located at the rear end of the base, and the guide beam is connected to the top beam. The guide beam moves up and down within the guide box. The guide box, the guide beam, and the top beam are used to prevent gangue from flowing into the hydraulic support.

[0007] This application uses a guide box and guide beam as a stabilizing mechanism to replace the traditional four-bar linkage, which can ensure the stability of the hydraulic support during lifting and lowering, has high structural strength, adapts to the large tilt state of the hydraulic support in the pseudo-inclined working face, and avoids the failure of the connecting structure due to the large tilt angle. The guide box, guide beam and top beam are used together to seal off the rock, which can form a rock barrier at the rear of the hydraulic support, with a good rock barrier effect, and can prevent the rock from rushing in from the rear of the hydraulic support. The guide box and guide beam are within the protection range of the top beam, which can prevent the structure from being damaged by the rock falling from the steeply inclined working face. The guide beam and guide box save internal space of the hydraulic support, facilitate the arrangement of safe pedestrian passages, and ensure the safety of workers in the steeply inclined working face.

[0008] Based on the above, the hydraulic support also includes a front column and a rear column, and a pedestrian passage mechanism is provided between the front column and the rear column.

[0009] By combining the four-column hydraulic support structure with the stabilizing mechanism, the overall lifting stability of the hydraulic support can be enhanced. It also helps to arrange a safer pedestrian walkway, allowing the location and space of the pedestrian walkway to adapt to the steeply inclined working face.

[0010] Based on the above, the pedestrian passage mechanism includes a ladder and handrails. The ladder is mounted on the base, and the handrails on both sides of the ladder are respectively mounted on the front column and the rear column.

[0011] By using a combination of ladders and handrails, workers can pass through more easily and safely.

[0012] Based on the above, the guide box and the base form an integrated L-shaped box structure.

[0013] By making the guide box and base into an integrated L-shaped box structure, the connection strength between the guide box and base and the rock-blocking performance of the guide box are effectively enhanced, thereby improving the overall stability of the hydraulic support structure in steeply inclined working surfaces and enabling the hydraulic support to stably complete the support and relocation processes.

[0014] Based on the above, the rear end of the top beam is covered with a rear retaining plate, which is inclined from high to low and set backward at the rear end of the top beam to buffer the impact of gangue and increase the rear protection range.

[0015] By using a rear retaining plate that slopes backward from high to low, the top beam can effectively include the guide box and guide beam of the stabilizing mechanism within its protection range, and effectively increase the rear protection range, further preventing gangue from flowing into the rear of the hydraulic support, while also buffering the falling gangue.

[0016] Based on the above, the rear retaining plate at the rear end of the top beam and the side plates on both sides of the top beam are inclined to form an inclined surface from left to right, which is used to make the rear end of the hydraulic support form a continuous inclined surface when it is arranged in a pseudo-inclined working surface.

[0017] By arranging the rear gangue plate as an inclined plane from left to right, when the gangue collapses downward along the pseudo-inclined working surface, the collapsed gangue can accumulate downward along the continuous inclined plane formed by the inclined plane, avoiding direct impact from the gangue.

[0018] Based on the above, the front end of the top beam is provided with a side guard plate, and the outer side of the side guard plate is inclined to both sides to effectively protect the side in the pseudo-inclined working face.

[0019] The irregularly shaped support plate structure adapts to the inclined roof of the steeply inclined working face, avoiding support gaps.

[0020] Based on the above, box-type bottom adjustment beams are provided on both sides of the base. The box-type bottom adjustment beams are stacked on the surface of the side plate of the base to avoid the inability to complete the bottom adjustment due to misalignment of two adjacent bases.

[0021] The box-type bottom adjustment beam with box-shaped structure gives the bottom adjustment structure high structural strength, strong bottom adjustment force and larger bottom adjustment contact range, which can effectively ensure the stability of hydraulic supports in steeply inclined working faces.

[0022] Based on the above, the top beam is equipped with a top adjustment device.

[0023] By coordinating the top adjustment device with the box-type bottom adjustment beam, the posture of the hydraulic support can be adjusted in more dimensions, further ensuring the stability of the hydraulic support in steeply inclined working faces.

[0024] Based on the above, the two sides of the rear end of the top beam are provided with downward-extending side baffle plates.

[0025] The combination of side and rear baffle plates further prevents gangue from entering the hydraulic support, resulting in a better gangue-blocking effect.

[0026] This utility model has substantial features and advancements compared to existing technologies. Specifically, this application uses a guide box and guide beam as a stabilizing mechanism to replace the traditional four-bar linkage, resulting in a stable structure, efficient rock-blocking, and space-saving design, suitable for steeply inclined coal seam mining. The integrated L-shaped box structure of the guide box and base effectively enhances the connection strength between the guide box and base, as well as the rock-blocking performance of the guide box. The four-column structure, ladder, and handrails effectively ensure pedestrian safety. The inclined rear rock-blocking plate and irregularly shaped side guard plate allow the hydraulic support to adapt to pseudo-inclined working face mining. The bottom and top adjustment structures effectively improve the stability of the hydraulic support in steeply inclined working faces. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0028] Figure 2 This is a top-view schematic diagram of the overall structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the top beam structure of this utility model.

[0030] In the figure, the attached labels are: base 1, top beam 2, front column 3, rear column 4, guide box 5, guide beam 6, rear retaining plate 7, ladder 8, handrail 9, side guard plate 10, box-type bottom adjusting beam 11, top adjusting device 12, side retaining plate 13, telescopic beam 14, and pushing mechanism 15. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through specific embodiments. Example

[0032] like Figures 1-3 As shown, the hydraulic support adapted to coal seams with a steep inclination of 60° or more in this embodiment includes a base 1, a top beam 2, and a stabilizing mechanism. The stabilizing mechanism includes a guide box 5 and a guide beam 6 that cooperate with each other. The guide beam 6 moves up and down inside the guide box 5. The guide box 5 is located at the rear end of the base 1, and the guide beam 6 is connected to the top beam 2. The guide box 5, the guide beam 6, and the top beam 2 are used to prevent gangue from flowing into the hydraulic support.

[0033] The guide box 5 and guide beam 6 can adopt a box-type structure, which has good structural strength. On the one hand, it can ensure the stability of the hydraulic support lifting, and on the other hand, it also has good rock-blocking performance.

[0034] The guide box 5 can be set to be the same width as or wider than the base 1, that is, the width of the guide box 5 is greater than or equal to the width of the base 1, so that the guide box 5 has a good rock-blocking effect.

[0035] The guide box 5 is located at the rear end of the base 1. Specifically, the guide box 5 can be installed on the base 1 or connected to the rear end face of the base 1. When the hydraulic support moves, it will drive the guide box 5 to move together.

[0036] The guide beam 6 is connected to the bottom of the top beam 2, and the guide beam 6 and the guide box 5 can be effectively protected by the top beam 2.

[0037] A hydraulic jack for lifting can be installed inside the guide box 5 to enhance the stability of the lifting of the guide beam 6 and prevent jamming.

[0038] This embodiment uses guide box 5 and guide beam 6 as stabilizing mechanisms instead of the traditional four-bar linkage, ensuring the stability of the hydraulic support during lifting and lowering, possessing high structural strength, adapting to the large inclination state of the hydraulic support within the pseudo-inclined working surface, and preventing the connection structure from failing due to large inclination angles. In addition, it has the following beneficial effects: First, the combined use of guide box 5, guide beam 6, and top beam 2 for sealing off rockfill forms a rockfill barrier at the rear of the hydraulic support, providing excellent rockfill protection and preventing rockfill from flowing into the hydraulic support from the rear. Second, guide box 5 and guide beam 6 are within the protection range of top beam 2, unlike the traditional four-bar linkage which forms a protrusion towards the rear of the hydraulic support, thus preventing damage to the structure from rockfill falling from the pseudo-inclined working surface. Third, the guide beam 6 moves up and down within guide box 5, saving front and rear space within the hydraulic support, facilitating the arrangement of safe pedestrian passages, and ensuring worker safety within the steeply inclined working surface. Example

[0039] Based on Embodiment 1, the guide box 5 and the base 1 form an integrated L-shaped box structure. For example, the L-shaped box structure includes L-shaped main stiffening plates, which serve as structural components on both sides of the L-shaped box structure.

[0040] By making the guide box 5 and the base 1 into an integrated L-shaped box structure, the connection strength between the guide box 5 and the base 1 and the rock-blocking performance of the guide box 5 are effectively enhanced, thereby improving the overall stability of the hydraulic support structure in steeply inclined working surfaces and enabling the hydraulic support to stably complete the support and relocation processes.

[0041] In addition, the pushing mechanism 15 installed on the base 1 can pass through the bottom space of the guide box 5, ensuring the extension length and structural strength of the pushing mechanism. Example

[0042] Based on Embodiment 1 or Embodiment 2, the hydraulic support also includes a front column 3 and a rear column 4, with a pedestrian passage mechanism between the front column 3 and the rear column 4; configured as a four-column hydraulic support with front column 3 and rear column 4, the four columns, in conjunction with the stabilizing mechanism, can enhance the overall lifting stability of the hydraulic support; due to the guide beam 6 and guide box 5 saving the front and rear space inside the hydraulic support, the front column 3 and rear column 4 can be effectively arranged on the base 1 without worrying about the base being too long; due to the guide beam 6 and guide box 5 saving the front and rear space inside the hydraulic support, the space between the front column 3 and the rear column 4 is spacious, allowing for a safer pedestrian passage, and the arrangement position and space of the pedestrian passage can adapt to the steeply inclined working surface.

[0043] Based on the above, the pedestrian passage mechanism includes a ladder 8 and handrails 9. The ladder 8 is mounted on the base 1, and the handrails 9 on both sides of the ladder 8 are mounted on the front column 3 and the rear column 4, respectively. In steeply inclined working surfaces exceeding 60°, the traditional step structure is no longer sufficient for pedestrians to pass smoothly. Therefore, the combination of ladder 8 and handrails 9 makes it easier for workers to pass safely.

[0044] Based on the above, a mechanism for installing a safety rope can be installed on the bottom surface of the top beam 2, the handrail 9, the front column 3, or the rear column 4. Example

[0045] For inclined and steeply inclined working surfaces: such as Figure 2 As shown, Figure 2 The diagram shows the arrangement of hydraulic supports in a pseudo-inclined working face, with misalignment between the hydraulic supports. The pseudo-inclined working face is a strategy for mining steeply inclined working faces. Traditional longwall mining can also be used in steeply inclined working faces, so there will be no misalignment of the hydraulic supports.

[0046] Based on the embodiments or embodiment 2, such as Figure 3 As shown, the rear end of the top beam 2 is covered with a rear retaining plate 7. The rear retaining plate 7 is inclined backward from high to low at the rear end of the top beam 2 to buffer the impact of gangue and increase the rear protection range. By inclining backward from high to low with the rear retaining plate 7, the top beam 2 can effectively include the guide box 5 and guide beam 6 of the stabilizing mechanism within the protection range of the top beam 2, and effectively increase the rear protection range, further preventing gangue from rushing in from the rear of the hydraulic support, while also buffering the falling gangue.

[0047] Based on the above, such as Figure 2 As shown, the rear retaining grate plate 7 at the rear end of the top beam 2 intersects with the side plates on both sides of the top beam 2 to form an inclined plane from left to right. This is used to ensure that the rear end of the hydraulic supports forms a continuous inclined plane when arranged on the pseudo-inclined working surface. By arranging the rear retaining grate plate 7 as an inclined plane from left to right, when the gangue collapses downward along the pseudo-inclined working surface, the collapsed gangue can accumulate downward along the continuous inclined plane formed by the inclined plane, avoiding direct impact from the gangue. If it is not set as an inclined plane, steps will be formed between the hydraulic supports, and the impact of the collapsed gangue on the protruding parts of the steps may cause damage to the hydraulic support structure.

[0048] Based on the above, such as Figure 2 As shown, the front end of the top beam 2 is provided with a side guard plate 10. The outer side of the side guard plate 10 is inclined to both sides to effectively protect the side in the pseudo-inclined working face. The irregularly shaped side guard plate 10 structure adapts to the inclined top plate of the pseudo-inclined working face and avoids the occurrence of support gaps.

[0049] Based on the above, a telescopic beam 14 can be installed at the front end of the top beam 2, and the side guard plate 10 can be installed on the telescopic beam 14. Example

[0050] Based on Embodiment 1 or Embodiment 2, box-type bottom adjustment beams 11 are provided on both sides of the base 1. The box-type bottom adjustment beams 11 are stacked on the side plate surface of the base 1 to avoid the inability to complete the bottom adjustment due to misalignment of two adjacent bases 1.

[0051] The box-type bottom adjustment beam 11 can adopt a box-shaped structure to enhance its structural strength, adapt to higher bottom adjustment forces, and also adapt to the tilting state between hydraulic supports on the pseudo-inclined working surface. This can enhance the stability between hydraulic supports and prevent them from tipping over.

[0052] The box-type bottom adjustment beam 11 is stacked on the side plate surface of the base 1. Its width and length are similar to or equal to those of the base 1. In this way, even if there is a misalignment of the hydraulic support base when it is in a pseudo-inclined working surface, the box-type bottom adjustment beam 11 can effectively complete the bottom adjustment operation by supporting the temporary frame.

[0053] When the guide box 5 and base 1 with the integrated L-shaped box structure in Embodiment 2 are used, the box-type bottom adjustment beam 11 can also be stacked on the side of part of the guide box 5.

[0054] The box-type bottom adjustment beam 11 with box-shaped structure gives the bottom adjustment structure high structural strength, strong bottom adjustment force and larger bottom adjustment contact range, which can effectively ensure the stability of the hydraulic support in steeply inclined working face.

[0055] Based on the above, the top beam 2 is equipped with a top adjustment device 12. The top adjustment device 12 can use a combination of top adjustment jacks and top adjustment pads to complete the top adjustment operation between hydraulic supports. Through the cooperation of the top adjustment device 12 and the box-type bottom adjustment beam 11, the posture of the hydraulic support can be adjusted in more dimensions, further ensuring the stability of the hydraulic support in the steeply inclined working face.

[0056] Based on the above, the two sides of the rear end of the top beam 2 are provided with downward extending side baffle plates 13. Through the cooperation of the side baffle plates 13 and the rear baffle plates 7, it is possible to further prevent gangue from flowing into the hydraulic support. In the steeply inclined working face, the side baffle plates 13 can extend downward to the range of the base 1 on the side of the hydraulic support that is inclined upward, so as to have a better gangue blocking effect.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A hydraulic support adapted to coal seams with a steep inclination of 60° or more, characterized in that, The system includes a base (1), a top beam (2), and a stabilizing mechanism. The stabilizing mechanism includes a guide box (5) and a guide beam (6) that cooperate with each other. The guide beam (6) moves up and down inside the guide box (5). The guide box (5) is located at the rear end of the base (1). The guide beam (6) is connected to the top beam (2). The guide box (5), the guide beam (6), and the top beam (2) are used to prevent gangue from flowing into the hydraulic support.

2. The hydraulic support for adapting to coal seams with an inclination of 60° or more as described in claim 1, characterized in that, The hydraulic support also includes a front column (3) and a rear column (4), and a pedestrian passage mechanism is provided between the front column (3) and the rear column (4).

3. The hydraulic support for coal seams with an inclination of 60° or more as described in claim 2, characterized in that, The pedestrian passage mechanism includes a ladder (8) and handrails (9). The ladder (8) is located on the base (1), and the handrails (9) on both sides of the ladder (8) are located on the front column (3) and the rear column (4), respectively.

4. The hydraulic support for adapting to coal seams with an inclination of 60° or more as described in claim 1, characterized in that, The guide box (5) and the base (1) form an integrated L-shaped box structure.

5. The hydraulic support for adapting to coal seams with an inclination of 60° or more as described in claim 1, characterized in that, The rear end of the top beam (2) is covered with a rear retaining grit plate (7), which is set at an angle from high to low at the rear end of the top beam (2) to buffer the impact of the grit and to increase the rear protection range.

6. The hydraulic support for coal seams with an inclination of 60° or more as described in claim 5, characterized in that, The rear retaining plate (7) at the rear end of the top beam (2) intersects with the side plates on both sides of the top beam (2) to form an inclined surface from left to right, which is used to make the rear end of the hydraulic support form a continuous inclined surface when it is arranged in a pseudo-inclined working surface.

7. The hydraulic support for adapting to coal seams with an inclination of 60° or more as described in claim 1, characterized in that, The top beam (2) is provided with a side guard plate (10) at its front end. The outer side of the side guard plate (10) is inclined to both sides and is used to effectively protect the side in the pseudo-inclined working face.

8. The hydraulic support for adapting to coal seams with an inclination of 60° or more as described in claim 1, characterized in that, The base (1) is provided with box-type bottom adjustment beams (11) on both sides. The box-type bottom adjustment beams (11) are stacked on the side plate surface of the base (1) to avoid the inability to complete the bottom adjustment due to the misalignment of two adjacent bases (1).

9. The hydraulic support for coal seams with an inclination of 60° or more as described in claim 8, characterized in that, The top beam (2) is equipped with a top adjustment device (12).

10. The hydraulic support for coal seams with an inclination of 60° or more as described in claim 1, characterized in that, The top beam (2) has downward-extending side baffles (13) on both sides of its rear end.

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