A high-efficiency sealing and isolating device suitable for a rear tail beam of a paste filling hydraulic support

Abstract

The present application belongs to the technical field of coal mining, and particularly relates to a high-efficiency sealing and isolating device suitable for a rear tail beam of a paste filling hydraulic support, comprising a mounting bottom plate, which is mounted at the bottom end of the tail beam, both ends of the mounting bottom plate are provided with telescopic columns, a cross beam is arranged between the top ends of the two telescopic columns, the cross beam and the two telescopic columns are arranged in a door-shaped structure and surround the periphery of the tail beam, a telescopic pressing plate is arranged on the side of the telescopic column away from the tail beam, the telescopic pressing plate is connected with the telescopic column through a plurality of first elastic members, the telescopic column slides between the cross beam and the mounting bottom plate through a second telescopic member, and the second telescopic member is arranged in parallel with the mounting bottom plate. The present application can effectively realize the automatic isolation and leakage stopping function, does not need to build an isolation retaining wall by a large scale of manual work, greatly reduces the manual operation link, reduces the labor intensity of workers, significantly improves the work efficiency, and improves the mechanization degree of the paste filling mining of coal mines.

Description

Technical Field

[0001] This invention belongs to the field of coal mining technology, and particularly relates to a high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling. Background Technology

[0002] Paste filling technology is an important component of the green mining technology system in coal mines. Its core objective is to solve the problem of coal pressure caused by the "three downs and one up" (referring to coal mining, coal mining, and coal mining), improve the extraction rate of coal resources, and thus extend the service life of the mine.

[0003] However, the current isolation and sealing work in the filling area has become one of the main bottlenecks hindering the further development of paste filling mining technology. Relying solely on manual isolation and sealing is not only cumbersome but also significantly increases the labor intensity of workers, while being time-consuming and inefficient. Furthermore, in traditional designs, there is no isolation device between the tail beams of two adjacent coal mining supports for sealing the filling slurry, which also requires the manual construction of isolation walls, resulting in low levels of mechanization. Even more seriously, the top sealing strips of the paste filling hydraulic supports are discontinuous, failing to effectively seal the gaps between the top and bottom plates of adjacent supports, creating slurry leakage channels and severely restricting the efficiency of paste filling coal mining.

[0004] Therefore, it is necessary to propose a high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling in order to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides a high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling, comprising a mounting base plate installed at the bottom end of the tail beam, telescopic columns being provided at both ends of the mounting base plate, and a crossbeam being provided between the top ends of the two telescopic columns. The crossbeam and the two telescopic columns are arranged in a portal-shaped structure and surround the perimeter of the tail beam. A telescopic pressure plate is provided on the side of the telescopic column away from the tail beam, and the telescopic pressure plate is connected to the telescopic column through a plurality of first elastic elements. The telescopic column slides between the crossbeam and the mounting base plate through a second telescopic element, and the second telescopic element is arranged parallel to the mounting base plate.

[0007] Preferably, the telescopic column includes a lower column that is slidably limited on the mounting base plate, an upper column that is slidably sleeved on the lower column, and a first telescopic member is provided between the lower column and the upper column.

[0008] Preferably, the telescopic pressure plate includes an upper upright plate and a lower upright plate. The upper upright plate is elastically connected to the upper column through a plurality of first elastic elements, and the lower upright plate is elastically connected to the lower column through a plurality of first elastic elements. The upper upright plate and the lower upright plate are connected by a plug-in connector.

[0009] Preferably, the connector includes a plurality of first inserts that are equally spaced and connected to the bottom end of the upper plate, and the lower plate has a plurality of first insertion slots that are adapted to the first inserts.

[0010] Preferably, the crossbeam includes an upper top plate and a lower top plate, the upper top plate being elastically connected to the lower top plate via a plurality of second elastic elements, and the lower top plate being connected to the output end of the first telescopic element.

[0011] Preferably, the upper top plate includes two upper beam plates that are hinged to each other; the lower top plate includes two lower beam plates that are hinged to each other, and the two hinge axes are arranged collinearly.

[0012] Preferably, the first elastic element and the second elastic element have the same structure.

[0013] Preferably, the second elastic element includes a slide rod, on which a spring is slidably sleeved, and the two ends of the spring abut against the upper top plate and the lower top plate, respectively.

[0014] Preferably, it also includes an upper beam plate, the bottom end of which is connected to an ear plate. The ear plate is hinged to the top of the telescopic column by a pin, and the upper beam plate is connected to the end of the crossbeam by a second connector.

[0015] Preferably, a side top block is connected to one end of the upper beam plate away from the crossbeam.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects:

[0017] This invention provides a high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling. A portal-shaped structure surrounds the tail beam, effectively enclosing it and providing a basic framework for sealing and isolation. A telescopic pressure plate is connected to a telescopic column via a first elastic element, allowing for a certain degree of elastic expansion and contraction to adapt to different working conditions. The telescopic column slides via a second telescopic element, effectively sealing the gap between adjacent tail beams. By adjusting the height of the telescopic column, the crossbeam presses against the coal seam roof.

[0018] This invention can effectively realize automated isolation and leak sealing functions, eliminating the need for large-scale manual construction of isolation walls, greatly reducing manual operation steps, lowering the labor intensity of workers, significantly improving work efficiency, and enhancing the mechanization level of coal mine paste backfilling mining. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the isolation device installed on the tail beam in this invention.

[0021] Figure 2 This is a schematic diagram of the high-efficiency sealing and isolation device for the rear tail beam in this invention;

[0022] The components are: 1. Mounting base plate; 2. Lower upright plate; 3. First insertion slot; 4. Lower column; 5. First insert plate; 6. Upper upright plate; 7. First elastic element; 8. Pin shaft; 9. Ear plate; 10. Side top block; 11. Upper beam plate one; 12. Second rack; 13. Upper beam plate two; 14. Second slot; 15. Spring; 16. Slide rod; 17. Tail beam; 18. Lower beam plate; 19. First telescopic element; 20. Upper column; 21. Second telescopic element. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figures 1 to 2 As shown, the present invention provides a high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling, including a mounting base plate 1, which is installed at the bottom end of the tail beam 17. Telescopic columns are provided at both ends of the mounting base plate 1, and a crossbeam is provided between the top ends of the two telescopic columns. The crossbeam and the two telescopic columns are arranged in a portal-shaped structure and surround the periphery of the tail beam 17. A telescopic pressure plate is provided on the side of the telescopic column away from the tail beam 17. The telescopic pressure plate is connected to the telescopic column through multiple first elastic elements 7. The telescopic column slides between the crossbeam and the mounting base plate 1 through a second telescopic element 21, and the second telescopic element 21 is arranged parallel to the mounting base plate 1.

[0026] The portal structure surrounds the tail beam 17, effectively enclosing it and providing a sealed and isolated basic framework for the tail beam. The telescopic pressure plate is connected to the telescopic column through the first elastic element 7, allowing for a certain degree of elastic expansion and contraction according to actual conditions to adapt to different working conditions. The telescopic column slides through the second telescopic element 21, effectively sealing the gap between two adjacent tail beams 17. By adjusting the height of the telescopic column, the crossbeam presses against the roof of the coal seam.

[0027] Furthermore, the telescopic column includes a lower column 4 that is slidably limited on the mounting base plate 1, an upper column 20 that is slidably sleeved on the lower column 4, and a first telescopic member 19 is provided between the lower column 4 and the upper column 20.

[0028] The lower column 4 is slidably limited on the mounting base plate 1 to ensure stable movement of the telescopic column on the mounting base plate 1; the upper column 20 is slidably sleeved on the lower column 4, and together with the first telescopic component 19, the telescopic column can realize the telescopic function, thereby adjusting the height of the device to meet the sealing and isolation requirements of different heights.

[0029] Furthermore, the telescopic pressure plate includes an upper upright plate 6 and a lower upright plate 2. The upper upright plate 6 is elastically connected to the upper upright column 20 through a number of first elastic elements 7, and the lower upright plate 2 is elastically connected to the lower upright column 4 through a number of first elastic elements 7. The upper upright plate 6 and the lower upright plate 2 are connected by plug-in connectors.

[0030] The upper plate 6 and the lower plate 2 are elastically connected to the upper and lower columns respectively through the first elastic element 7, so that the telescopic pressure plate can better adapt to the deformation and pressure changes in different positions; the upper plate 6 and the lower plate 2 are connected by plug-in parts, which facilitates disassembly and maintenance, while ensuring connection stability.

[0031] Furthermore, the connector includes multiple first inserts 5 that are equally spaced and connected to the bottom of the upper plate 6, and multiple first insertion slots 3 that are adapted to the first inserts 5 are provided on the lower plate 2.

[0032] The first insert 5 and the matching first insertion slot 3, which are set at equal intervals, can ensure that the upper plate 6 and the lower plate 2 are firmly connected and the force is evenly distributed, thereby improving the stability of the overall structure of the telescopic pressure plate and effectively transmitting pressure.

[0033] Furthermore, the crossbeam includes an upper top plate and a lower top plate. The upper top plate is elastically connected to the lower top plate through multiple second elastic members, and the lower top plate is connected to the output end of the first telescopic member 19.

[0034] The upper and lower top plates are elastically connected by a second elastic element, giving the crossbeam a certain elastic buffering capacity to adapt to different pressures and deformations. The lower top plate is connected to the output end of the first telescopic member 19, which can transmit the power of the first telescopic member 19 to the upper top plate.

[0035] Furthermore, the upper top plate includes two hinged upper beam plates 13; the lower top plate includes two hinged lower beam plates 18, with the two hinge axes arranged collinearly.

[0036] Both the upper and lower top plates consist of two hinged beams with collinear hinge axes. When the two first telescopic components 19 extend and retract asynchronously, this hinged structure allows the upper and lower top plates to rotate and deform relative to each other within a certain range, thereby alleviating stress concentration caused by the asynchronous extension, preventing damage to the beam structure, and ensuring the stable operation of the sealing and isolation device.

[0037] Furthermore, the first elastic element 7 has the same structure as the second elastic element.

[0038] Furthermore, the second elastic element includes a slide rod 16, on which a spring 15 is slidably sleeved, with the two ends of the spring 15 abutting against the upper top plate and the lower top plate, respectively.

[0039] The slide bar 16 provides guidance for the extension and retraction of the spring 15, ensuring that the spring 15 does not deviate during the extension and retraction process, so that the elastic force of the spring 15 can be accurately transmitted to the upper and lower top plates, realizing the elastic buffering function of the crossbeam.

[0040] Furthermore, it also includes an upper beam plate 11, the bottom end of which is connected to an ear plate 9. The ear plate 9 is hinged to the top of the telescopic column by a pin 8. The upper beam plate 11 is connected to the end of the crossbeam by a second connector.

[0041] In this embodiment, the second connector includes a plurality of second racks 12 that are fixedly connected at equal intervals to the upper beam plate 11. The upper beam plate 13 is provided with a second slot 14 that is adapted to the second racks 12. The second racks 12 are slidably limited within the second slot 14 to realize the lateral sliding of the upper beam plate 11.

[0042] The upper beam plate 11 is hinged to the top of the telescopic column via the ear plate 9 and the pin 8. This hinged structure allows the upper beam plate 11 to rotate at a certain angle, enhancing the adaptability of the device under complex working conditions. During the lateral movement of the telescopic column, the upper beam plate 11 can be moved synchronously through the connection of the hinge point, achieving a lateral sealing function.

[0043] Furthermore, the end of the upper beam plate 11 furthest from the crossbeam is connected to a side top block 10.

[0044] The side top block 10 can press against each other on the adjacent tail beams, thus expanding the sealing range of the device.

[0045] Furthermore, both the first telescopic component 19 and the second telescopic component 21 are hydraulic jacks, with the fixed end of the first telescopic component 19 mounted on the tail beam 17.

[0046] Furthermore, the end of the upper beam plate 11 away from the crossbeam is connected to the side top block 10 via a second elastic element.

[0047] The present invention provides a high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling. The working principle is as follows: During operation, the two first telescopic members 19 are controlled to extend synchronously. The first telescopic members 19 push the lower roof plate upward, thereby driving the entire crossbeam upward. Because there is a certain gap between the upper and lower roof plates under the pre-tension of the spring 15, as the first telescopic members 19 continue to extend, the lower roof plate compresses the spring 15 and continues to move upward until the upper and lower roof plates are in contact. At this time, the rubber sealing strip on the upper roof plate is squeezed and deformed under pressure, thereby achieving a sealing effect on the coal seam roof.

[0048] Simultaneously, the second telescopic component 21 drives the telescopic upright and the telescopic pressure plate to slide laterally, and a certain gap also exists between the telescopic upright and the telescopic pressure plate under the pre-tensioning action of the spring. After the telescopic pressure plate first contacts the telescopic pressure plate of the adjacent frame, the telescopic upright continues to move laterally, simultaneously driving the upper beam plate 11 and the side top block 10 to move synchronously. When the side top block 10 contacts the side top block 10 of the adjacent frame, the rubber sealing gasket on the side top block 10 is squeezed and deformed, thereby achieving the sealing effect of side isolation. It should be noted that rubber sealing strips are provided on the upper beam plate 13, the side top block 10, the upper upright plate 6, and the lower upright plate 2 to enhance the sealing performance.

[0049] During operation, the two first telescopic components 19 are controlled to extend synchronously, driving the crossbeam to move upward as a whole, pre-pressing the coal seam roof. Because there is a gap between the upper and lower roof plates under the pre-tension of the spring 15, the first telescopic component 19 is raised and continues to move upward. The lower roof plate compresses the spring 15 and continues to move upward until the upper and lower roof plates are in contact. At this time, the rubber on the upper roof plate will also continue to move upward under the drive of the lower roof plate. After the rubber contacts the coal seam roof, it is squeezed and deformed, thus achieving the effect of top sealing. The second telescopic component 21 drives the telescopic column and telescopic pressure plate to slide laterally. There is a gap under the pre-tension of the spring. When it contacts the telescopic pressure plate of the adjacent frame first, the telescopic column moves laterally and at the same time, it drives the upper beam plate 11 and the side top block 10 to move synchronously. When it contacts the side top block 10 of the adjacent frame, the rubber sealing gasket is squeezed, thus achieving the effect of side isolation sealing. It should be noted that rubber sealing strips are provided on the upper beam plate 2 13, the side top block 10, the upper vertical plate 6 and the lower vertical plate 2.

[0050] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support suitable for paste filling, characterized in that, The system includes a mounting base plate (1), which is installed at the bottom end of the tail beam (17). Telescopic columns are provided at both ends of the mounting base plate (1). A crossbeam is provided between the tops of the two telescopic columns. Both ends of the crossbeam are connected to an upper beam plate (11) via a second connector. An ear plate (9) is connected to the bottom end of the upper beam plate (11). The ear plate (9) is hinged to the top of the telescopic columns via a pin (8). The upper beam plate (11) is located away from the crossbeam. One end is connected to a side top block (10). The crossbeam and the two telescopic columns are arranged in a gate-shaped structure and surround the tail beam (17). A telescopic pressure plate is provided on the side of the telescopic column away from the tail beam (17). The telescopic pressure plate is connected to the telescopic column through multiple first elastic elements (7). The telescopic column slides between the crossbeam and the mounting base plate (1) through a second telescopic element (21). The second telescopic element (21) is arranged parallel to the mounting base plate (1). The telescopic column includes a lower column (4) that is slidably limited on the mounting base plate (1), an upper column (20) is slidably sleeved on the lower column (4), and a first telescopic member (19) is provided between the lower column (4) and the upper column (20). The telescopic pressure plate includes an upper plate (6) and a lower plate (2). The upper plate (6) is elastically connected to the upper column (20) through a plurality of first elastic elements (7). The lower plate (2) is elastically connected to the lower column (4) through a plurality of first elastic elements (7). The upper plate (6) and the lower plate (2) are connected by plug-in connectors. The crossbeam includes an upper top plate and a lower top plate. The upper top plate is elastically connected to the lower top plate through a plurality of second elastic elements. The lower top plate is connected to the output end of the first telescopic member (19).

2. The high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling according to claim 1, characterized in that, The connector includes a plurality of first inserts (5) that are equally spaced connected to the bottom end of the upper plate (6), and a plurality of first insertion slots (3) adapted to the first inserts (5) are provided on the lower plate (2).

3. The high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling according to claim 1, characterized in that, The upper top plate includes two hinged upper beam plates (13); the lower top plate includes two hinged lower beam plates (18), with the two hinge axes arranged collinearly.

4. The high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling according to claim 1, characterized in that, The first elastic element (7) has the same structure as the second elastic element.

5. The high-efficiency sealing and isolation device for the rear tail beam of a hydraulic support for paste filling according to claim 1, characterized in that, The second elastic element includes a slide rod (16), on which a spring (15) is slidably sleeved, and the two ends of the spring (15) abut against the upper top plate and the lower top plate respectively.

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