Large-mining-height working face return airway forepoling

Abstract

The utility model relates to a large-mining-height working face return airway forepoling, and belongs to the technical field of forepoling. Comprising a front side support and a rear side support which are distributed front and back, a connecting base is hinged to the rear end of an overall base of the front side support, the rear end of the connecting base is hinged to the front end of an overall base of the rear side support through two pushing jacks, and the upper side of the rear end of the overall base of the front side support is connected with the connecting base through two bottom adjusting jacks; the problems that a traditional forepoling is small in supporting area and poor in stability are solved.

Description

Technical Field

[0001] This utility model belongs to the field of advanced support technology, specifically relating to an advanced support for the return airway of a high mining face. Background Technology

[0002] my country has abundant coal reserves and is a major coal producer. With the rapid development of coal mining equipment and technology in recent years, ultra-high mining faces with a height of 8 meters or more have emerged. To ensure better ventilation and improve mine safety, the pre-support of roadways in ultra-high mining faces is particularly important. Traditional pre-supports are two rows of stepping pre-supports with a small support area. When the roadway height is too high, the stability is poor, which is not conducive to the support of the roof of the return airway. Long-term mining can cause the supports to tilt, requiring constant adjustment, which poses a significant safety hazard and may even cause underground safety accidents in severe cases. Utility Model Content

[0003] This invention overcomes the shortcomings of existing technologies and proposes an advanced support for the return airway of a high-extraction working face; it solves the problems of small support area and poor stability of traditional advanced supports.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0005] A high-extraction working face return airway advance support includes a front support and a rear support distributed front and rear. The rear end of the overall base of the front support is hinged to a connecting base. The rear end of the connecting base is hinged to the front end of the overall base of the rear support through two push jacks. The upper rear end of the overall base of the front support is connected to the connecting base through two bottom adjusting jacks.

[0006] Furthermore, the overall base has a gate-shaped structure, including two symmetrical longitudinal sections and one transverse section. The two longitudinal sections are arranged along the front-to-back direction, and the two ends of the transverse section are fixedly connected to the rear ends of the two longitudinal sections respectively. Two symmetrical base connectors are fixedly arranged at the rear end of the overall base of the front support, and the front ends of the two longitudinal sections are hinged to the two base connectors at the rear end of the overall base of the front support respectively.

[0007] Furthermore, the two push jacks are symmetrically arranged on the left and right, and two base connectors are fixedly installed at the front end of the overall base of the rear support. One end of the cylinder bottom of the two push jacks is hinged to the two base connectors at the front end of the overall base of the rear support, and one end of the piston rod of the two push jacks is hinged to the rear ends of the two longitudinal sections of the connecting base.

[0008] Furthermore, the two bottom adjusting jacks are symmetrically arranged on the left and right. One end of the cylinder bottom of the two bottom adjusting jacks is hinged to the upper rear end of the overall base of the front support. One end of the piston rod of the two bottom adjusting jacks extends downward to the rear and is respectively hinged to the upper end face of the two longitudinal sections of the connecting base.

[0009] Furthermore, an integral top beam is installed above the overall base of the front and rear supports, and four columns are installed between the overall base and the overall top beam, with the four columns arranged in a square pattern.

[0010] Furthermore, a connecting seat is fixedly installed at the upper middle part of the overall base, and a top cover connector is installed at the lower middle part of the overall top beam. The upper end of the cover beam is hinged to the top cover connector, and four connecting rods are hinged to the lower end of the cover beam. The lower ends of the four connecting rods are hinged to the connecting seat.

[0011] Furthermore, integral front beams and integral rear beams are respectively provided at the front and rear ends of the integral top beam of the front and rear supports, and integral side guards are provided on the outer sides of the integral front beams and integral rear beams; side-tilting mechanisms are respectively provided on the left and right sides of the integral top beam of the front and rear supports.

[0012] Furthermore, two symmetrical connecting trunnions are provided on the front side of the upper end of the overall base of the front bracket, and a diagonal bracing jack is provided on each connecting trunnion.

[0013] Furthermore, two symmetrical connecting trunnions are provided on the rear side of the upper surface of the overall base of the rear support, and a diagonal bracing jack is provided on each connecting trunnion.

[0014] The beneficial effects of this utility model compared to the prior art are as follows:

[0015] This utility model provides an advanced support for the return airway of a high-extraction working face. Compared with the traditional two-row stepping advanced support, this advanced support for the return airway of a high-extraction working face can better avoid its shortcomings. First, the integral top beam and integral base can increase the contact area between the support and the top and bottom plates, improving the stability of the support. At the same time, the advanced support has a simple structure and is easy to assemble. Supports of different heights and lengths can be designed and manufactured according to the actual working face conditions, making it widely adaptable. It also provides relatively large pedestrian space, ensuring pedestrian access or temporary equipment transportation. While ensuring reliability, it can also compensate for the poor stability of two-row stepping advanced supports when the height is large. When the high-extraction working face advances, the large height of the roadway causes two-row stepping advanced supports to become too tall and unstable. This advanced support for the return airway of a high-extraction working face can improve mining efficiency while ensuring safe mining of high-extraction working faces underground, thus better guaranteeing safe and efficient mining of high-extraction working faces underground. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a magnified view of the connection between the main beam and the protective beam.

[0019] Figure 3 This is a structural diagram of the overall base;

[0020] Figure 4 This is a schematic diagram showing the connection between the overall base of the front bracket and the overall base of the rear bracket.

[0021] Figure 5 This is a structural schematic diagram of the overall roof beam;

[0022] Among them, 1 is the integral top beam, 2 is the integral front beam, 3 is the integral side guard, 4 is the side tilting mechanism, 5 is the protective beam, 6 is the connecting rod, 7 is the integral base, 8 is the connecting base, 9 is the column, 10 is the pushing jack, 11 is the diagonal bracing jack, 12 is the bottom adjusting jack, 13 is the top-and-cover connector, 14 is the connecting trunnion, and 15 is the base connector. Detailed Implementation

[0023] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0024] like Figure 1 As shown in Figure 5, this utility model provides an advanced support for the return airway of a high mining face, including a front support and a rear support distributed front and rear. The rear end of the overall base 7 of the front support is hinged to a connecting base 8. The rear end of the connecting base 8 is hinged to the front end of the overall base 7 of the rear support through two push jacks 10. The upper rear end of the overall base 7 of the front support is connected to the connecting base 8 through two bottom adjusting jacks 12.

[0025] The overall base 7 has a U-shaped structure, including two symmetrical longitudinal sections and one transverse section. The two longitudinal sections are arranged along the front-to-back direction, and the two ends of the transverse section are fixedly connected to the rear ends of the two longitudinal sections respectively. Two symmetrical base connectors 15 are fixedly installed at the rear end of the overall base 7 of the front support, and the front ends of the two longitudinal sections are hinged to the two base connectors 15 at the rear end of the overall base 7 of the front support respectively.

[0026] Two push jacks 10 are symmetrically arranged on the left and right sides. Two base connectors 15 are fixedly installed at the front end of the overall base 7 of the rear support. One end of the cylinder bottom of the two push jacks 10 is hinged to the two base connectors 15 at the front end of the overall base 7 of the rear support. One end of the piston rod of the two push jacks 10 is hinged to the rear ends of the two longitudinal sections of the connecting base 8.

[0027] The front support and the rear support are connected together by the connecting base 8 and the pushing jack 10. The connecting base 8 adopts an integral structure, thereby improving the overall stability of the front support.

[0028] Two bottom adjusting jacks 12 are symmetrically arranged on the left and right. One end of the cylinder bottom of the two bottom adjusting jacks 12 is hinged to the upper rear end of the overall base 7 of the front support. One end of the piston rod of the two bottom adjusting jacks 12 extends to the lower rear side and is respectively hinged to the upper end face of the two longitudinal sections of the connecting base 8.

[0029] An integral top beam 1 is installed above the integral base 7 of the front and rear supports. Four columns 9 are installed between the integral base 7 and the integral top beam 1. The four columns 9 are arranged in a square pattern, and the overall height of the support is controlled by the extension and retraction of the columns 9. A connecting seat is fixedly installed at the upper center of the integral base 7, and a top cover connector 13 is installed at the lower center of the integral top beam 1. The upper end of the cover beam 5 is hinged to the top cover connector 13, and four connecting rods 6 are hinged to the lower end of the cover beam 5. The lower ends of the four connecting rods 6 are hinged to the connecting seat.

[0030] The front and rear supports are each equipped with an integral front beam 2 and an integral rear beam at their respective ends of the integral top beam 1. Integral side guards 3 are provided on the outer sides of the integral front beam 2 and the integral rear beam. Side-tilting mechanisms 4 are provided on the left and right sides of the integral top beam 1 of the front and rear supports.

[0031] The front support's base 7 has two symmetrical connecting trunnions 14 on its upper front side, with a diagonal bracing jack 11 mounted on each trunnion 14. Similarly, the rear support's base 7 has two symmetrical connecting trunnions 14 on its upper rear side, with a diagonal bracing jack 11 mounted on each trunnion 14. In the event of a tipping over of either the front or rear support, the diagonal bracing jacks 11 can be adjusted to straighten the entire support, further enhancing its stability.

[0032] When the base plate is uneven, the advanced support may dent, resulting in an uneven situation. In this case, the piston rods of the two adjusting jacks 12 can be extended or retracted to adjust the connecting base 8, thereby keeping the advanced support level and further improving its adaptability.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A large mining height working face return airway advanced support, characterized in that: The front side support and the rear side support are arranged in front and back, the whole base (7) of the front side support is hingedly connected with a connecting base (8) at the rear end, the rear end of the connecting base (8) is hingedly connected with the front end of the whole base (7) of the rear side support through two push jacks (10), and the upper side of the rear end of the whole base (7) of the front side support is connected with the connecting base (8) through two bottom adjusting jacks (12).

2. The large mining height face return airway advanced support according to claim 1, characterized in that: The whole base (7) is in the shape of a door, comprising two left and right symmetrical longitudinal sections and a transverse section, the two longitudinal sections are arranged along the front and back directions, and the two ends of the transverse section are fixedly connected with the rear ends of the two longitudinal sections; two left and right symmetrical base connecting heads (15) are fixedly arranged at the rear end of the whole base (7) of the front side support, and the front ends of the two longitudinal sections are hingedly connected with the two base connecting heads (15) at the rear end of the whole base (7) of the front side support.

3. The large mining height face return airway advanced support according to claim 2, characterized in that: The two push jacks (10) are arranged left and right symmetrically, two base connecting heads (15) are fixedly arranged at the front end of the whole base (7) of the rear side support, the cylinder bottom of the two push jacks (10) is hingedly connected with the two base connecting heads (15) at the front end of the whole base (7) of the rear side support, and the piston rod of the two push jacks (10) is hingedly connected with the rear ends of the two longitudinal sections of the connecting base (8).

4. The large mining height face return airway advanced support according to claim 2, characterized in that: The two bottom adjusting jacks (12) are arranged left and right symmetrically, the cylinder bottom of the two bottom adjusting jacks (12) is hingedly connected with the upper side of the rear end of the whole base (7) of the front side support, and the piston rod of the two bottom adjusting jacks (12) extends to the lower side of the rear and is hingedly connected with the upper end faces of the two longitudinal sections of the connecting base (8).

5. The large mining height face return airway advanced support according to claim 1, characterized in that: The upper side of the whole base (7) of the front side support and the rear side support is provided with a whole roof beam (1), four vertical columns (9) are arranged between the whole base (7) and the whole roof beam (1), and the four vertical columns (9) are arranged in a square shape.

6. The large mining height face return airway advanced support according to claim 5, characterized in that: A connecting seat is fixedly arranged at the middle of the upper end of the whole base (7), a roof connecting head (13) is arranged at the middle of the lower end of the whole roof beam (1), the upper end of the shelter beam (5) is hingedly connected with the roof connecting head (13), the lower end of the shelter beam (5) is hingedly connected with four connecting rods (6), and the lower end of the four connecting rods (6) is hingedly connected with the connecting seat.

7. The large mining height face return airway advanced support according to claim 1, characterized in that: The whole roof beam (1) of the front side support and the rear side support is provided with a whole front beam (2) and a whole rear beam at the front and back ends, respectively, and a whole support (3) is arranged on the outer side of the whole front beam (2) and the whole rear beam; the left and right sides of the whole roof beam (1) of the front side support and the rear side support are respectively provided with a side turning mechanism (4).

8. The large mining height face return airway advanced support according to claim 1, characterized in that: The upper end face of the whole base (7) of the front side support is provided with two left and right symmetrical connecting trunnions (14), and an inclined support jack (11) is arranged on each connecting trunnion (14).

9. The large mining height face return airway advanced support according to claim 1, characterized in that: The upper end face of the whole base (7) of the rear side support is provided with two left and right symmetrical connecting trunnions (14), and an inclined support jack (11) is arranged on each connecting trunnion (14).

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