Thin seam opposite-pulling working face end hydraulic support

Abstract

The utility model discloses a thin seam opposite-pulling working face end hydraulic support which comprises a frame type supporting hydraulic support, two pushing oil cylinders and a set of frame type combined supporting hydraulic support, and the frame type supporting hydraulic support and the set of frame type combined supporting hydraulic support are connected through the pushing oil cylinders. All parts of the frame-type combined supporting hydraulic support are connected through pin shafts, the frame-type combined supporting hydraulic support is divided into a left part and a right part, the frame-type supporting hydraulic support and the frame-type combined supporting hydraulic support serve as supporting bodies, underground roadway supporting is achieved, hydraulic pressure serves as power, a pushing oil cylinder serves as a moving medium, and the pushing oil cylinder and the frame-type combined supporting hydraulic support are connected through pin shafts. A frame type supporting hydraulic support or a frame type combined supporting hydraulic support is used as an anchoring point, self-moving of the whole set of end hydraulic supports is achieved, the device is easy to use, convenient to maintain and high in automation degree, after the device is put into use, the forward roadway supporting problem in the thin coal seam opposite-pulling working face is solved, and the safety coefficient of underground roadway supporting is greatly improved.

Description

Technical Field

[0001] The utility model relates to a hydraulic support for supporting a mine tunnel, in particular to a hydraulic support for a tunnel end of a thin coal seam pulling working face. Background Art

[0002] In recent years, with the popularization of fully mechanized mining and fully mechanized caving working faces in China, end hydraulic supports have also become popular and have achieved good results.

[0003] The application of the pulling face is generally when the length of the face exceeds the design length of the scraper conveyor, so that a fully mechanized mining face is divided into two faces of similar length for relatively simultaneous mining. The two faces have the same mining equipment, similar mining speed, and share a set of transfer conveyors.

[0004] Since both sides of the transfer conveyor tunnel of the pull working face are mined at the same time, the roof pressure at the end of the transfer conveyor tunnel is relatively large and the equipment is dense. At the same time, the goaf area is large. Therefore, the support of the end of the pull working face is related to the safety of the entire working face. Summary of the invention

[0005] The utility model aims to provide a hydraulic support for the end of a roadway in a thin coal seam pulling working face, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hydraulic support for the end of a tunnel of a thin coal seam pulling working face, comprising a frame-type support hydraulic support, a push cylinder, a frame-type combined support hydraulic support, and a rock-blocking plate. The frame-type support hydraulic support and the frame-type combined support hydraulic support are connected by a push cylinder. The internal components of the frame-type combined support hydraulic support, including a front top beam, a middle front beam, a middle rear beam, a rear top beam, a front base, a middle front seat, a middle seat, a middle rear seat, a rear base, a front upper connecting rod, a front lower connecting rod, a rear shielding beam, a front connecting rod, and a rear connecting rod, are connected by pins. The front top beam, the middle front beam, the middle rear beam, and the rear top beam are connected to the front base, the middle seat, and the rear base by 14 column jacks. The rock-blocking plate is divided into an upper and lower part, each with 4 pieces, which are respectively connected to the middle rear beam, the rear top beam, the middle rear seat, and the rear base by pins.

[0008] As a further solution of the utility model: the frame-type combined support hydraulic support is composed of two groups of identical bases and top beams arranged in parallel.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the device uses a frame-type support hydraulic support and a frame-type combined support hydraulic support as the support body to realize underground tunnel support, uses hydraulic pressure as the power, uses a push cylinder as the motion medium, and uses a frame-type support hydraulic support or a frame-type combined support hydraulic support as the anchor point to realize self-movement of the entire set of end hydraulic supports. The device is simple to use, easy to maintain, and has a high degree of automation. After being put into use, it solves the problem of tunnel support in the thin coal seam pulling working face, and greatly improves the safety factor of underground tunnel support. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the hydraulic support at the end of the tunnel of the thin coal seam pulling working face.

[0011] Figure 2 This is a top view schematic diagram of the base of the hydraulic support at the end of the tunnel of the thin coal seam pulling working face.

[0012] Figure 3 This is a schematic diagram of the working of the gangue retaining plate of the hydraulic support at the end of the tunnel of the thin coal seam pulling working face.

[0013] Figure 4 This is a bird's-eye view of the end of the tunnel in the thin coal seam pulling working face.

[0014] Figure 1 Middle: 1. Frame-type support hydraulic support; 2. Sliding cylinder; 3. Frame-type combined support hydraulic support; 4. Gangue baffle; 5. Front top beam; 6. Middle front beam; 7. Middle rear beam; 8. Rear top beam; 9. Front base; 10. Middle front seat; 11. Middle seat; 12. Middle rear seat; 13. Rear base; 14. Front upper connecting rod; 15. Front lower connecting rod; 16. Rear shielding beam; 17. Front connecting rod; 18. Rear connecting rod; 19. Column jack.

[0015] Figure 4 In: 1. Crusher; 2. Hydraulic support at the end of the tunnel of the thin coal seam pulling working face; 3. Transfer conveyor; 4. Scraper conveyor; 5. Hydraulic support. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0017] See also Figures 1 to 4In an embodiment of the utility model, a hydraulic support for the end of a roadway in a thin coal seam pulling working face comprises a frame-type support hydraulic support (1), a push cylinder (2), a frame-type combined support hydraulic support (3), and a gangue baffle (4), wherein the frame-type support hydraulic support (1) and the frame-type combined support hydraulic support (2) are connected by the push cylinder (3).

[0018] The internal components of the frame-type combined support hydraulic support (3), namely, the front top beam (5), the middle front beam (6), the middle rear beam (7), the rear top beam (8), the front base (9), the middle front seat (10), the middle seat (11), the middle rear seat (12), the rear base (13), the front upper connecting rod (14), the front lower connecting rod (15), the rear shielding beam (16), the front connecting rod (17), and the rear connecting rod (18), are connected by a pin shaft; the front top beam (5), the middle front beam (6), the middle rear beam (7), the rear top beam (8), the front base (9), the middle seat (11), and the rear base (13) are connected by 14 column jacks (19); the slag baffle plate (4) is divided into an upper and lower part, each of which has four parts, and is respectively connected to the middle rear beam (7), the rear top beam (8), the middle rear seat (12), and the rear base (13) by a pin shaft.

[0019] See also Figure 4 In the embodiment of the utility model, the overlapping position of the scraper conveyor (4) and the transfer conveyor (3) can be clearly observed.

[0020] Working principle:

[0021] When in use, in the initial state, the push cylinder (2) is in an extended state, the frame-type support hydraulic support (1) and the frame-type combined support hydraulic support (3) are in contact with the tunnel roof, and form a stable force-supported state;

[0022] When the entire device needs to move forward, the frame-type combined support hydraulic support (3) is separated from the tunnel roof, the push cylinder (2) is retracted, and the frame-type combined support hydraulic support (3) is pulled forward;

[0023] When the push cylinder (2) is retracted into place, the frame-type combined support hydraulic support (3) is deployed upward to contact the tunnel roof and form a stable force support;

[0024] After the frame-type combined support hydraulic support (3) is supported stably, the frame-type support hydraulic support (1) is retracted and the push cylinder (2) is extended. Since the frame-type combined support hydraulic support (3) is fixed by force, the frame-type support hydraulic support (1) is pushed to realize the self-movement of the hydraulic support at the end of the roadway of the thin coal seam pulling working face. This action step is repeated according to actual needs.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, in the description of the present utility model, unless otherwise specified, "multiple" means two or more. Features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydraulic support for the end of a thin coal seam pulling working face, characterized in that: The invention comprises a frame-type support hydraulic support (1), a push cylinder (2), a frame-type combined support hydraulic support (3), and a gangue baffle (4); the frame-type support hydraulic support (1) and the frame-type combined support hydraulic support (3) are connected by the push cylinder (2); the internal components of the frame-type combined support hydraulic support (3) include a front top beam (5), a middle front beam (6), a middle rear beam (7), a rear top beam (8), a front base (9), a middle front seat (10), a middle seat (11), a middle rear seat (12), a rear base (13), a front The upper connecting rod (14), the front lower connecting rod (15), the rear shielding beam (16), the front connecting rod (17), and the rear connecting rod (18) are connected by a pin shaft. The front top beam (5), the middle front beam (6), the middle rear beam (7), the rear top beam (8), the front base (9), the middle seat (11), and the rear base (13) are connected by 14 column jacks (19). The slag baffle plate (4) is divided into an upper and lower part, each with 4 pieces, which are respectively connected to the middle rear beam (7), the rear top beam (8), the middle rear seat (12), and the rear base (13) by a pin shaft.

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