A hydraulic support isolation device for coal mine backfilling mining ends

Abstract

This utility model discloses a hydraulic support isolation device for coal mine backfilling and mining ends. This utility model relates to the field of backfilling and isolation technology, including a sealing cloth and four corner supports. The four ends of the sealing cloth are fixedly connected to the four bottom ends of the four corner supports. A retracting device is fixedly connected to one end of the driving device that passes through the connecting plate. The retracting device is used to retract the center of the sealing cloth. A support device is provided between the periphery of the driving device that passes through the connecting plate and the support legs. This hydraulic support isolation device for coal mine backfilling and mining ends, by setting up four corner supports, with the four corners of the sealing cloth fixedly connected to the bottom ends of the four support legs of the four corner supports, allows for convenient sealing of the mine pit surface when sealing the backfill material. Simply place the four corner supports directly above the backfill material, then unfold the four support legs. The unfolding of the support legs causes the sealing cloth to unfold and be laid on the mine pit, achieving convenient sealing of the mine pit.

Description

Technical Field

[0001] This utility model relates to the field of filling and isolation technology, specifically to a hydraulic support isolation device for the coal mine filling and mining end. Background Technology

[0002] Publication No.: CN208996751U, Title: An Isolation Device for a Hydraulic Support for Paste Filling, which discloses: an upper isolation unit nested within a middle isolation unit, and a middle isolation unit nested within a lower isolation unit; a pin is used to fix different holes in the upper isolation unit's limiting hole and the middle isolation unit's limiting hole group; the pin is inserted into the lower limiting hole of the middle isolation unit and the lower isolation unit's sliding groove; an upper isolation side telescopic jack is nested within the upper isolation unit, with one end of the upper isolation side telescopic jack hinged to the upper isolation unit and the other end hinged to the upper isolation side telescopic jack; the upper isolation side telescopic jack is nested within the upper isolation unit; a lower isolation side telescopic jack is nested within the lower isolation unit, with one end of the lower isolation side telescopic jack hinged to the lower isolation unit and the other end hinged to the lower isolation side telescopic jack; the lower isolation side telescopic jack is nested within the lower isolation unit; one end of the isolation telescopic jack is hinged to the upper isolation unit and the other end hinged to the lower isolation unit. Advantages: It can quickly isolate the area to be filled in a paste-filling coal mining face using mechanical means and quickly connect with the paste-filling hydraulic support, improving the efficiency of the filling work;

[0003] The aforementioned disclosure enables rapid isolation of the backfilling area in a coal mining face using mechanical means. Currently, when backfilling mine pits formed during coal mining, isolation retaining walls are generally built on the sides. However, after backfilling is completed, the surface of the mine pit needs to be sealed. Currently, when sealing the backfill material on the upper surface of the mine pit, a layer of waterproof cloth is laid manually to isolate it from the outside. This manual laying method is time-consuming and affects work efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a hydraulic support isolation device for the mining end of a coal mine backfilling project. This solves the problem that currently, when backfilling the mine pit formed during coal mining, isolation retaining walls are generally built on the sides. However, after backfilling is completed, the surface of the mine pit still needs to be sealed. Currently, sealing the backfill material on the upper surface of the mine pit involves manually laying a layer of waterproof cloth to isolate it from the outside environment. This manual laying method is time-consuming and affects work efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic support isolation device for coal mine backfilling and mining ends, comprising a sealing cloth and four corner supports, wherein the four ends of the sealing cloth are fixedly connected to the four bottom ends of the four corner supports.

[0006] The four-corner bracket includes a connecting plate, and four support legs are rotatably mounted on the periphery of the connecting plate.

[0007] A driving device is provided at the top of the connecting plate, and the bottom end of the driving device penetrates through the connecting plate.

[0008] A gathering device is fixedly connected to one end of the drive device that passes through the connecting plate. The gathering device is used to gather the center of the sealing cloth.

[0009] A support device is provided between the drive device and the support leg at one end of the connecting plate. The support device is used to drive the bottom ends of the four support legs away from each other.

[0010] Preferably, the folding device includes a tubular folding box, and fixing devices are provided on the inner wall of the top of the tubular folding box and the side of the bottom of the support leg. The fixing devices include bolts, and the ends of the bolts pass through the sealing cloth and are threadedly connected to the tubular folding box and the support leg respectively.

[0011] Preferably, the driving device includes a hydraulic rod, and a fixed rod is fixedly connected to the periphery of one end of the hydraulic rod through the connecting plate. The supporting device includes a support rod, and a T-shaped block is slidably connected to the side of the support leg. The two ends of the support rod are rotatably connected to the T-shaped block and the fixed rod, respectively.

[0012] Preferably, a telescopic rod is provided between the side of the middle part of the support rod and the side of the middle part of the fixed rod, and the two ends of the telescopic rod are rotatably connected to the support rod and the fixed rod, respectively.

[0013] Preferably, the telescopic rod includes a first connecting rod and a second connecting rod, the end of the second connecting rod extends into the first connecting rod and is slidably connected to it, and a second spring is provided in the first connecting rod, with both ends of the second spring fixedly connected to the first connecting rod and the second connecting rod respectively.

[0014] Preferably, the side of the support leg is provided with a T-shaped groove that matches the T-shaped block, and a first spring is provided in the T-shaped groove. The two ends of the first spring are fixedly connected to the T-shaped block and the T-shaped groove, respectively.

[0015] Beneficial effects

[0016] This utility model provides an isolation device for a hydraulic support at the mining end of a coal mine backfilling operation. Compared with the prior art, it has the following advantages:

[0017] (1) The hydraulic support isolation device at the coal mine backfilling mining end is equipped with four corner supports. The four corners of the sealing cloth are fixedly connected to the bottom of the four support legs of the four corner supports. When it is necessary to seal the backfill material on the surface of the mine pit, it is only necessary to place the four corner supports directly above the backfill material and then unfold its four support legs. The unfolding of the support legs can drive the sealing cloth to unfold and lay on the mine pit, so as to achieve convenient sealing of the mine pit by the sealing cloth.

[0018] (2) The hydraulic support isolation device at the coal mine filling and mining end is equipped with a driving device, which is a hydraulic rod. The extension and retraction of the hydraulic rod can drive the four support legs of the four corner supports to automatically unfold, thereby realizing that the sealing cloth can automatically unfold and close the mine pit, reducing labor costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the connection structure of the four corner brackets and the drive device of this utility model;

[0021] Figure 3 This is an exploded view of the connection structure of the support leg and support device of this utility model;

[0022] Figure 4 This is a cross-sectional view of the telescopic rod structure of this utility model;

[0023] Figure 5 This is a bottom view of the support leg connection structure of this utility model.

[0024] In the diagram: 1. Four-corner bracket; 11. Connecting plate; 12. Support leg; 121. T-slot; 2. Drive device; 21. Hydraulic rod; 22. Fixing rod; 3. Retracting device; 31. Tubular retracting box; 4. Support device; 41. Telescopic rod; 411. First connecting rod; 412. Second connecting rod; 413. Second spring; 42. Support rod; 43. T-block; 44. First spring; 5. Fixing device. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5This utility model provides a technical solution: a hydraulic support isolation device for coal mine backfilling and mining ends, including a sealing cloth and four corner supports 1. The four ends of the sealing cloth are fixedly connected to the four bottom ends of the four corner supports 1. The four corner supports 1 include a connecting plate 11. Four support legs 12 are rotatably installed on the periphery of the connecting plate 11. A driving device 2 is provided at the top of the connecting plate 11. The bottom end of the driving device 2 passes through the connecting plate 11. A gathering device 3 is fixedly connected to one end of the driving device 2 that passes through the connecting plate 11. The gathering device 3 is used to gather the center of the sealing cloth. A support device 4 is provided between the periphery of the end of the driving device 2 that passes through the connecting plate 11 and the support legs 12. The support device 4 is used to drive the bottom ends of the four support legs 12 away from each other.

[0027] Specifically, by setting up a four-corner bracket 1, the four corners of the sealing cloth are fixedly connected to the bottom of the four support legs 12 of the four-corner bracket 1. When it is necessary to seal the backfill material on the surface of the mine pit, it is only necessary to place the four-corner bracket 1 directly above the backfill material, and then unfold its four support legs 12. The unfolding of the support legs 12 can drive the sealing cloth to unfold and be laid on the mine pit, so as to achieve convenient sealing of the mine pit by the sealing cloth.

[0028] By setting up a driving device 2, which is a hydraulic rod 21, the extension and retraction of the hydraulic rod 21 can drive the four support legs 12 of the four corner brackets 1 to automatically unfold, thereby enabling the sealing cloth to automatically unfold and close the mine pit, reducing labor costs.

[0029] The gathering device 3 includes a tubular gathering box 31. The inner wall at the top of the tubular gathering box 31 and the side of the bottom of the support leg 12 are provided with fixing devices 5. The fixing devices 5 include bolts. The ends of the bolts pass through the sealing cloth and are threadedly connected to the tubular gathering box 31 and the support leg 12 respectively.

[0030] Specifically, when the support legs 12 on the four corner brackets 1 are folded together, the excess sealing cloth is folded into the tubular folding box 31. As the support legs 12 unfold, the sealing cloth inside the tubular folding box 31 is pulled out and unfolded to be laid on top of the mine pit to seal the surface of the mine pit. The bolts fix the four corners of the sealing cloth to the support legs 12 and the center position is fixed inside the tubular folding box 31, thus facilitating the positioning of the sealing cloth.

[0031] The driving device 2 includes a hydraulic rod 21, and a fixed rod 22 is fixedly connected to one end of the connecting plate 11. The support device 4 includes a support rod 42, and a T-shaped block 43 is slidably connected to the side of the support leg 12. The two ends of the support rod 42 are rotatably connected to the T-shaped block 43 and the fixed rod 22, respectively.

[0032] Specifically, when the hydraulic rod 21 is activated, its bottom end moves down, causing the fixed rod 22 to move down. With the support of the support rod 42, the support legs 12 are moved away from each other and unfold.

[0033] A telescopic rod 41 is provided between the side of the middle part of the support rod 42 and the side of the middle part of the fixed rod 22. The two ends of the telescopic rod 41 are rotatably connected to the support rod 42 and the fixed rod 22, respectively.

[0034] Specifically, the telescopic rod 41 supports the support rod 42 and the fixed rod 22, so that when the fixed rod 22 moves down, it can support and drive the support rod 42 to move down synchronously. During the downward movement, as the telescopic rod 41 extends, it drives the support rod 42 to rotate, thus having sufficient length to support and drive the support leg 12 to unfold.

[0035] The telescopic rod 41 includes a first connecting rod 411 and a second connecting rod 412. The end of the second connecting rod 412 extends into the first connecting rod 411 and is slidably connected to it. A second spring 413 is provided inside the first connecting rod 411. The two ends of the second spring 413 are fixedly connected to the first connecting rod 411 and the second connecting rod 412, respectively.

[0036] Specifically, when the second spring 413 is in normal condition, it drives the first link 411 and the second link 412 to move away from each other, thereby realizing the automatic extension of the telescopic rod 41.

[0037] The side of the support leg 12 is provided with a T-shaped groove 121 that matches the T-shaped block 43. A first spring 44 is provided in the T-shaped groove 121, and the two ends of the first spring 44 are fixedly connected to the T-shaped block 43 and the T-shaped groove 121 respectively.

[0038] Specifically, when the first spring 44 is in its normal state, it causes the T-shaped block 43 to slide downward, which allows the support rod 42 to rotate more easily, supporting and driving the support leg 12 to unfold.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic support isolation device for a coal mine backfilling mining end, comprising a sealing cloth, characterized in that: It also includes a four-corner bracket (1), and the four ends of the sealing cloth are fixedly connected to the four bottom ends of the four-corner bracket (1); The four-corner bracket (1) includes a connecting plate (11), and four supporting legs (12) are rotatably mounted on the periphery of the connecting plate (11). The top end of the connecting plate (11) is provided with a driving device (2), and the bottom end of the driving device (2) penetrates the connecting plate (11). The drive device (2) is fixedly connected to a gathering device (3) at one end of the connecting plate (11). The gathering device (3) is used to gather the center of the sealing cloth. The drive device (2) has a support device (4) between the periphery of one end of the connecting plate (11) and the support leg (12). The support device (4) is used to drive the bottom ends of the four support legs (12) away from each other.

2. The hydraulic support isolation device for coal mine backfill mining end face according to claim 1, characterized in that: The gathering device (3) includes a tubular gathering box (31). The inner wall at the top of the tubular gathering box (31) and the side of the bottom of the support leg (12) are provided with fixing devices (5). The fixing device (5) includes a bolt. The end of the bolt passes through the sealing cloth and is threadedly connected to the tubular gathering box (31) and the support leg (12) respectively.

3. The hydraulic support isolation device for coal mine backfill mining end face according to claim 1, characterized in that: The driving device (2) includes a hydraulic rod (21), and a fixed rod (22) is fixedly connected to one end of the connecting plate (11). The support device (4) includes a support rod (42), and a T-shaped block (43) is slidably connected to the side of the support leg (12). The two ends of the support rod (42) are rotatably connected to the T-shaped block (43) and the fixed rod (22) respectively.

4. The hydraulic support isolation device for coal mine backfill mining end face according to claim 3, characterized in that: A telescopic rod (41) is provided between the side of the middle part of the support rod (42) and the side of the middle part of the fixed rod (22). The two ends of the telescopic rod (41) are rotatably connected to the support rod (42) and the fixed rod (22) respectively.

5. The hydraulic support isolation device for coal mine backfill mining end face according to claim 4, characterized in that: The telescopic rod (41) includes a first connecting rod (411) and a second connecting rod (412). The end of the second connecting rod (412) extends into the first connecting rod (411) and is slidably connected to it. A second spring (413) is provided in the first connecting rod (411). The two ends of the second spring (413) are fixedly connected to the first connecting rod (411) and the second connecting rod (412) respectively.

6. The hydraulic support isolation device for coal mine backfill mining face end, according to claim 3, characterized in that: The side of the support leg (12) is provided with a T-shaped groove (121) that matches the T-shaped block (43). A first spring (44) is provided in the T-shaped groove (121). The two ends of the first spring (44) are fixedly connected to the T-shaped block (43) and the T-shaped groove (121) respectively.

Images