Paste filling support T-shaped rear tail beam

Abstract

The utility model belongs to green filling mining support technical field discloses a paste filling support T type rear beam, including roof beam, still including a plurality of rear beam articulated with roof beam, the plugging device of second jack connection with roof beam, a plurality of rear beam all contain wide part and narrow part, the wide part and narrow part of rear beam are formed T type structure, a plurality of rear beam side by side array arrangement, the narrow part of rear beam is towards the area to be filled, the wide part of rear beam is away from the side of narrow part and is articulated with roof beam, the wide part of rear beam still is connected with roof beam through first jack.

Description

Technical Field

[0001] This utility model relates to the field of green backfilling mining support technology, and in particular to a T-shaped rear tail beam of a paste backfilling support. Background Technology

[0002] Paste backfilling is an important component of green backfilling mining systems and an effective method for reducing gangue emissions, managing underground mining, and controlling surface subsidence. Among these methods, the paste backfilling support is particularly crucial for sealing goaf areas, directly impacting backfilling efficiency and effectiveness.

[0003] Currently, paste backfilling methods are divided into single-cut backfilling and multi-cut backfilling. Single-cut backfilling has low mining efficiency and high labor intensity. Therefore, at present, paste backfilling generally adopts multi-cut backfilling. 2-3 meters behind the support frame, the roof of the area to be backfilled needs to be supported to protect the safety of construction personnel. This requires the paste backfilling support to be equipped with a tail beam to support the roof of the area to be backfilled. Currently, two main forms of roof support are used in paste backfilling. One type is the rear top beam support, which is generally a wide, integral top beam structure with a large support area. However, it has poor adaptability when the top slab of the area to be filled is uneven. At this time, the gaps between the frames are small, making it difficult for workers to seal the gaps between the top slab and the top slab of the rear top beam, increasing the sealing time and labor intensity, and making it easy for grout to leak from the top of the top slab. The other type is the narrow tail beam structure, which requires a groove to be cut on the upper part of the isolation device and used in conjunction with the rear tail beam. The isolation cloth is not easy to lay in the groove and is easy to tear. There are safety gaps between the isolation baffles, which need to be sealed manually, resulting in high labor intensity and low efficiency. Utility Model Content

[0004] To address the problems of large support area and poor adaptability of the existing integral wide top beam structure, and the need for manual sealing, high labor intensity, and low efficiency of the narrow tail beam structure, this invention proposes a T-shaped rear tail beam for a paste filling support. A split T-shaped rear tail beam structure is designed, transforming the original integral wide top beam structure into several arrayed T-shaped rear tail beams. This allows the rear tail beams to fully contact and adhere to the top plate of the area to be filled, solving the problem of poor adaptability of the original integral wide top beam structure. The T-shaped rear tail beams are controlled by jacks and work in conjunction with the rear isolation mechanism of the support through planar cooperation to achieve rapid isolation behind the support. Simultaneously, the use of a semi-enclosed isolation cloth eliminates the need for inter-support sealing, improving sealing efficiency and safety compared to the narrow tail beam structure.

[0005] This utility model is achieved through the following technical solution: it includes a top beam, and also includes several rear tail beams hinged to the top beam, and a sealing device connected to the top beam through a second jack. Each of the rear tail beams includes a wide part and a narrow part, and the wide part and the narrow part of the rear tail beam form a T-shaped structure. The several rear tail beams are arranged in a side-by-side array, with the narrow part of the rear tail beam facing the area to be filled. The side of the wide part of the rear tail beam away from the narrow part is hinged to the top beam, and the wide part of the rear tail beam is also connected to the top beam through a first jack.

[0006] As a further preferred embodiment, the upper and lower surfaces of the wide portion of the rear tail beam are both planar and parallel to each other, the upper surface of the wide portion of the rear tail beam is in contact with the top plate of the area to be filled, and the lower surface of the wide portion of the rear tail beam is in contact with the sealing device.

[0007] As a further preferred embodiment, the upper surface of the narrow portion of the rear tail beam is flat, and the lower surface of the narrow portion of the rear tail beam gradually slopes towards the top plate from the direction closer to the top beam to the direction farther away from the top beam.

[0008] As a further preferred embodiment, a connecting rod is provided between the top beam and the sealing device.

[0009] As a further preferred embodiment, the length ratio of the wide portion to the narrow portion of the rear tail beam is 1:1 to 1:5.

[0010] As a further preferred embodiment, the angle between the lower and upper surfaces of the narrow portion of the rear tail beam is 3° to 10°.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model designs a split T-shaped rear tail beam structure, which sets the original overall wide top beam structure into several arrayed T-shaped rear tail beams, so that the rear tail beams can fully contact and fit with the top plate of the area to be filled, thus solving the problem of poor adaptability of the original overall wide top beam structure.

[0013] 2. The T-shaped rear tail beam designed in this utility model is controlled by a jack and works in conjunction with the rear isolation mechanism of the support through a planar cooperation to achieve rapid isolation behind the support. At the same time, the semi-enclosed isolation cloth eliminates the need for inter-support sealing, which improves sealing efficiency and safety compared with the narrow tail beam structure.

[0014] 3. The wide part of the T-shaped rear tail beam designed in this utility model is hinged to the top beam, and the gap between the wide parts of several T-shaped rear tail beams is very small, which can prevent the leakage of gangue and ensure the safety of pedestrian passage; the narrow part of the T-shaped rear tail beam can ensure that the filling material is effectively connected to the top and prevent the top plate from sinking.

[0015] 4. The narrow section of the T-shaped rear tail beam designed in this utility model gradually thins from near the top beam to far away from the top beam. This not only increases the filling height of the paste, but also allows the T-shaped rear tail beam to be pulled out of the filling body more easily and smoothly after the paste solidifies. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a front view of the T-shaped rear tail beam of this utility model.

[0018] Figure 3 This is a top view of the T-shaped rear tail beam of this utility model.

[0019] Figure 4 This is a layout diagram of the working state of the T-shaped rear tail beam of this utility model.

[0020] The image shows:

[0021] 1. Top beam; 2. Rear tail beam; 3. Sealing device; 4. Connecting rod; 5. First jack; 6. Second jack. Detailed Implementation

[0022] The advantages and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

[0023] like Figures 1 to 4As shown, this utility model provides a T-shaped rear tail beam for a paste filling support, including several rear tail beams 2. Each of the rear tail beams 2 includes a wide portion and a narrow portion, which form a T-shaped structure. The side of the wide portion of the rear tail beam 2 away from the narrow portion is hinged to a top beam 1. The wide portion of the rear tail beam 2 is also connected to the top beam 1 through a first jack 5. The first jack 5 can adjust the swing of the rear tail beam 2 by extending or retracting its output end, so that the rear tail beam 2 contacts the top plate of the area to be filled. The upper and lower surfaces of the wide portion of the rear tail beam 2 are both planar and parallel to each other. The upper surface of the wide portion of the rear tail beam 2 is in contact with the top plate of the area to be filled, and the lower surface of the wide portion of the rear tail beam 2 is in contact with a sealing device 3. The length ratio of the wide portion to the narrow portion of the rear tail beam 2 is preferably 1:1 to 1:5, which can support a larger area of ​​the top plate while ensuring structural strength. The length ratio of the wide section to the narrow section of the rear tail beam 2 can be adjusted according to the support requirements of the area to be filled, and can be adjusted according to the mining and filling method of two-cut filling, three-cut filling, or four-cut filling. The lengths of both the wide and narrow sections of the rear tail beam 2 mentioned here refer to the direction along the top beam 1 towards the area to be filled. The sealing device 3 is connected to the top beam 1 via the second jack 6. Preferably, a connecting rod 4 can be installed between the top beam 1 and the sealing device 3, which can prevent damage caused by deviation in the force applied to the second jack 6. The wide section of the rear tail beam 2 serves to support the roof and protect the safety of pedestrian passages. The narrow section of the rear tail beam 2 extends from the wide section to the area to be filled, serving to support the roof of the area to be filled. The spacing between the narrow sections of the rear tail beams 2 can be adjusted as needed. A larger spacing between the narrow sections of the rear tail beams 2 facilitates safe construction under the rear tail beams 2 when the top plate of the area to be filled is uneven. Straw or similar materials can be stuffed above the rear tail beams 2 to fill the gap between them and the top plate, ensuring the sealing of the area to be filled. The gaps in the narrow sections of the rear tail beams 2 ensure that the paste makes full contact with the top plate, allowing the paste to effectively support the top plate after solidification and preventing it from sinking. The gaps formed by removing the rear tail beams 2 can be filled again in the next filling cycle.

[0024] like Figure 2 As shown, preferably, the upper surface of the narrow section of the rear tail beam 2 is flat and can fit against the top plate. The lower surface of the narrow section of the rear tail beam 2 gradually slopes towards the top plate from near the top beam 1 to away from the top beam 1, that is, the thickness of the narrow section of the rear tail beam 2 gradually decreases from near the top beam 1 to away from the top beam 1. This design not only increases the filling height of the paste in the area to be filled, improving the filling rate, but also facilitates the removal of the rear tail beam 2 from the solidified paste after it has solidified. The angle between the lower and upper surfaces of the narrow section of the rear tail beam 2 is preferably 3° to 10°, which can increase the filling rate while ensuring the strength of the top of the paste.

[0025] The rear tail beam 2 of the paste filling support designed in this utility model has an overall T-shaped structure, with a wider front end and a narrower rear end. The narrower rear section of the T-shaped rear tail beam 2 is located behind the sealing device 3 and extends rearward to the area to be filled, serving to support the top plate of the area to be filled. The front end of the rear tail beam 2 is box-shaped, thick, and of uniform height, and works in conjunction with the sealing device 3 to achieve rapid sealing.

[0026] like Figure 4 As shown, several rear tail beams 2 are arranged in a parallel array, with the narrow part of the rear tail beam 2 facing the area to be filled. The rear tail beam 2 can extend towards the area to be filled under the action of the top beam 1. When it reaches the designated position, the rear tail beam 2 can rotate along the hinge point between the rear tail beam 2 and the top beam 1 under the action of the first jack 5, thereby moving towards the top plate of the area to be filled until it fits against the top plate of the area to be filled.

[0027] The working principle of the T-shaped rear tail beam of the paste filling support designed in this utility model is as follows: First, the top beam 1 moves the rear tail beam 2 to the designated area. Under the action of the first jack 5, the rear tail beam 2 rotates along the hinge point and moves towards the top plate of the area to be filled until it fits against the top plate of the area to be filled. When the top plate is uneven, workers can stuff straw or other materials on top of the rear tail beam 2 to fill the gaps and ensure the sealing of the area to be filled. Then, the sealing device 3 moves towards the width of the rear tail beam 2 under the action of the second jack 6 until it fits against the width of the rear tail beam 2, and a separation cloth is laid to achieve rapid isolation. Then, paste is injected into the area to be filled until the paste fills the area. After the paste solidifies, the top beam 1 moves backward, driving the rear tail beam 2 out of the area to be filled.

[0028] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A T-shaped rear tail beam for a paste filling support, comprising a top beam (1), characterized in that: It also includes several tail beams (2) hinged to the top beam (1) and a sealing device (3) connected to the top beam (1) via a second jack (6). Each of the tail beams (2) includes a wide part and a narrow part. The wide part and the narrow part of the tail beam (2) form a T-shaped structure. The tail beams (2) are arranged in a side-by-side array. The narrow part of the tail beam (2) faces the area to be filled. The side of the wide part of the tail beam (2) away from the narrow part is hinged to the top beam (1). The wide part of the tail beam (2) is also connected to the top beam (1) via a first jack (5).

2. The T-shaped rear tail beam of the paste filling support according to claim 1, characterized in that: The upper and lower surfaces of the wide portion of the rear tail beam (2) are both planes and parallel to each other. The upper surface of the wide portion of the rear tail beam (2) is in contact with the top plate of the area to be filled, and the lower surface of the wide portion of the rear tail beam (2) is in contact with the sealing device (3).

3. The T-shaped rear tail beam of the paste filling support according to claim 2, characterized in that: The upper surface of the narrow section of the rear tail beam (2) is flat, and the lower surface of the narrow section of the rear tail beam (2) gradually slopes towards the top plate from the direction closer to the top beam (1) to the direction farther away from the top beam (1).

4. The T-shaped rear tail beam of the paste filling support according to claim 3, characterized in that: A connecting rod (4) is provided between the top beam (1) and the sealing device (3).

5. The T-shaped rear tail beam of the paste filling support according to any one of claims 1 to 4, characterized in that: The length ratio of the wide part to the narrow part of the rear tail beam (2) is 1:1 to 1:

5.

6. The T-shaped rear tail beam of the paste filling support according to claim 3, characterized in that: The angle between the lower and upper surfaces of the narrow section of the rear tail beam (2) is 3° to 10°.

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