Supporting frame for coal mining tunneling roadway

Abstract

The utility model relates to the technical field of roadway supporting, in particular to a coal mining tunneling roadway supporting frame which comprises two limiting square pipes, supporting pipes are connected into the limiting square pipes in a sliding mode, and supporting plates are fixedly connected to the bottom ends of the two limiting square pipes. The supporting device has the advantages that the two limiting square pipes, the two supporting pipe transverse rods and the arc-shaped supporting rods are arranged and then are oppositely connected and combined into the roadway supporting frame, a roadway is conveniently supported, the two supporting blocks are arranged and are in butt joint with the output ends of the jacks and located in the two limiting grooves, and the supporting effect is good. When a gap is formed between the arc-shaped supporting rod and the top face of a roadway, the two jacks are controlled to stretch, so that the two supporting pipes are conveniently pushed, meanwhile, the number of the corresponding cushion blocks is increased, the roadway is conveniently and stably supported, meanwhile, the jacks are detached after supporting is completed, recycling of the jacks is achieved, the overall structure is simple, and operation is convenient. And the supporting requirements of roadways with different heights are met.

Description

Technical Field

[0001] This utility model relates to the field of roadway support technology, and in particular to a support frame for coal mining roadways. Background Technology

[0002] Foundation pit support is a set of measures for supporting, reinforcing and protecting the sidewalls and surrounding environment to ensure the safety of underground structure construction and the surrounding environment. As a structural system, foundation pit support should meet the requirements of stability and deformation, which are the two limit states usually mentioned in the specifications: the ultimate limit state and the serviceability limit state. The ultimate limit state, in the context of foundation pit support, means that the support structure fails, collapses, slides, or the surrounding environment is damaged, resulting in a relatively large-scale instability.

[0003] Existing support frame technologies for coal mining roadways have the following problems: the height of coal mining roadways cannot be completely uniform during excavation, and large height deviations will occur during the excavation process. When using support frames of the same height to protect and support the roadway, they cannot provide support in the higher roadways. Therefore, it is necessary to use supports of different heights to support and protect the roadway. Based on this, a support frame for coal mining roadways is proposed. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a support frame for coal mining roadways, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a support frame for a coal mining roadway, comprising two limiting square tubes, each internally connected to a support tube. Support plates are fixedly connected to the bottom ends of both limiting square tubes, extending to both sides of the limiting square tubes. Limiting grooves are formed on both sides of the two limiting square tubes. Support blocks are fixedly connected to one side of each of the two support tubes. Jacks are provided on one side of the top surface of each of the two support plates, with their output ends respectively connected to the bottom ends of the two support blocks. Multiple pads are provided between the bottom ends of the two support tubes and the support plates. A crossbar is provided at the top of each of the two support tubes, and first limiting blocks are fixedly connected to both sides of the top surface of the crossbar. Arc-shaped support rods are provided on the outer walls of the two first limiting blocks.

[0006] Preferably, in any of the above-mentioned schemes, both of the support plates are fixedly connected to the bottom ends of the two limiting square tubes by welding. Both sides of the top surface of the two support plates are fixedly connected with diagonal rods, and one end of each of the four diagonal rods is fixedly connected to the side of the limiting square tube. This scheme facilitates the fixed connection between the support plates and the bottom ends of the limiting square tubes, increases the contact area with the roadway floor, and helps control the settlement of the support frame. At the same time, the diagonal rods increase the structural strength between the support plates and the support frame, making it easier for the support frame to stand stably and provide stable support for the roadway.

[0007] Preferably, in any of the above schemes, both support blocks are L-shaped, one side of each support block is fixedly connected to one side of the support pipe by bolts, and both sides of each support block are slidably connected to the sidewall of the limiting groove. This scheme facilitates the fixed connection between the support blocks and the support pipe, and the height of the support pipe can be controlled by the extension or shortening action of the jack, so that the support frame can stably support roadways of different heights.

[0008] Preferably, the bottom surfaces of both support blocks are concave upwards. This design facilitates connection with the output end of the jack and allows the jack to be removed after lifting or lowering for reuse, thus reducing the number of jacks used.

[0009] Preferably, in any of the above solutions, a second limiting block is provided on both sides of the bottom surface of the crossbar, which is slidably connected to the top of the inner wall of the two support tubes respectively. This solution facilitates the connection between the two second limiting blocks and the inner wall of the support tube, making it easy to install the crossbar. After installation, the crossbar and the support tube are fixedly connected by fasteners to form a stable structure.

[0010] Preferably, the bottom surface of the crossbar is provided with two first connecting rods, the bottom ends of the two first connecting rods are fixedly connected to the sides of the two support pipes respectively, and the middle part of the top surface of the crossbar is provided with two second connecting rods, the top ends of the two second connecting rods are fixedly connected to the arc-shaped support rod. By using this scheme, it is easy to improve the structural strength of the crossbar and the arc-shaped support rod, and it is easy to provide stable support for the inside of the roadway.

[0011] This utility model has the following advantages:

[0012] 1. This coal mining tunnel support frame is constructed by connecting two limiting square tubes, two support pipe crossbars, and an arc-shaped support rod to form a tunnel support frame, facilitating tunnel support. Two support blocks are installed inside the two limiting slots and connected to the output end of the jacks. When a gap appears between the arc-shaped support rod and the tunnel roof, the extension of the two jacks is controlled to push the two support pipes. Increasing the number of pads further stabilizes the tunnel. After support is completed, the jacks can be removed for reuse. The overall structure is simple and meets the support needs of tunnels at different heights.

[0013] 2. The coal mining tunnel support frame, by setting four diagonal bars, facilitates the improvement of the structural strength between the two limiting square tubes and the support plate, making it easier to place the support frame stably. By setting the first connecting rod and two second connecting rods, it is easier to improve the structural strength at the crossbars and arc-shaped support rods, which facilitates stable support inside the tunnel. Moreover, the overall design is reasonable, which facilitates modular design and rapid assembly inside the tunnel, making it easy to promote and use. Attached Figure Description

[0014] Figure 1 This is a first-view structural diagram of the present invention;

[0015] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 4 This is a schematic diagram of the second-view structure of the present invention;

[0018] Figure 5 This is a schematic diagram of the limiting square tube structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the arc-shaped support rod structure of this utility model.

[0020] In the diagram: 1-Limiting square tube, 2-Diagonal bar, 3-Padded block, 4-Support plate, 5-Jack, 6-Support block, 7-First connecting rod, 8-Horizontal bar, 9-Second connecting rod, 10-Arc-shaped support rod, 11-Support tube, 12-Limiting groove, 13-First limiting block, 14-Second limiting block. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0022] like Figures 1 to 6 As shown, a support frame for a coal mining roadway includes two limiting square tubes 1, each with a support tube 11 slidably connected inside. Support plates 4 are fixedly connected to the bottom ends of both limiting square tubes 1, extending to both sides of each limiting square tube 1. Limiting grooves 12 are provided on both sides of each limiting square tube 1. Support blocks 6 are fixedly connected to one side of each support tube 11. Jacks 5 are provided on one side of the top surface of each support plate 4, with their output ends respectively connected to the bottom ends of the two support blocks 6. Multiple pads 3 are provided between the bottom ends of the two support tubes 11 and the support plates 4. A crossbar 8 is provided at the top of each support tube 11. First limiting blocks 13 are fixedly connected to both sides of the top surface of the crossbar 8. Arc-shaped support rods 10 are provided on the outer walls of the two first limiting blocks 13.

[0023] Both support plates 4 are fixedly connected to the bottom ends of the two limiting square tubes 1 by welding. Both sides of the top surface of the two support plates 4 are fixedly connected with diagonal rods 2. One end of each of the four diagonal rods 2 is fixedly connected to the side of the limiting square tube 1. As an optional technical solution of this utility model, this makes it easier to fix the support plates 4 to the bottom ends of the limiting square tubes 1, increasing the contact area with the roadway floor, which is used to control the settlement of the support frame. At the same time, the diagonal rods 2 are used to increase the structural strength between the support plates 4 and the support frame, making it easier for the support frame to stand stably and provide stable support for the roadway.

[0024] Both support blocks 6 are L-shaped. One side of each support block 6 is fixedly connected to one side of the support pipe 11 by bolts. The two sides of each support block 6 are slidably connected to the side wall of the limiting groove 12. As an optional technical solution of this utility model, this makes it easy to fix the support blocks 6 to the support pipe 11. At the same time, the height of the support pipe 11 can be controlled by the extension or shortening action of the jack 5, so that the support frame can stably support the roadway at different heights.

[0025] The bottom surfaces of both support blocks 6 are concave upwards, which is an optional technical solution of this utility model. This facilitates docking with the output end of the jack 5, and also makes it easy to remove the jack 5 after lifting or lowering, so as to facilitate recycling and reduce the number of jacks 5 used.

[0026] A second limiting block 14 is provided on both sides of the bottom surface of the crossbar 8, which is slidably connected to the top of the inner wall of the two support tubes 11 respectively. As an optional technical solution of this utility model, this facilitates the connection between the two second limiting blocks 14 and the inner wall of the support tube 11, making it easier to install the crossbar 8. After installation, the crossbar 8 and the support tube 11 are fixedly connected by fasteners to form a stable structure.

[0027] Two first connecting rods 7 are provided on the bottom surface of the crossbar 8. The bottom ends of the two first connecting rods 7 are fixedly connected to the sides of the two support pipes 11 respectively. Two second connecting rods 9 are provided in the middle of the top surface of the crossbar 8. The top ends of the two second connecting rods 9 are fixedly connected to the arc-shaped support rod 10. As an optional technical solution of this utility model, this is convenient to improve the structural strength of the crossbar 8 and the arc-shaped support rod 10, and facilitates stable support inside the roadway.

[0028] In summary, when in use, the user connects two limiting square tubes 1, two supporting tubes 11, crossbars 8, and arc-shaped support rods 10 to form a roadway support frame, facilitating roadway support. Two support blocks 6 are installed inside the two limiting slots 12 and connected to the output ends of the jacks 5. When a gap appears between the arc-shaped support rod 10 and the roadway roof, the extension of the two jacks 5 is controlled to push the two supporting tubes 11. Simultaneously, increasing the number of corresponding pads 3 facilitates stable roadway support. After the support is completed, the jack 5 can be removed, allowing for its reuse. The overall structure is simple and meets the support requirements of roadways at different heights. By setting four diagonal rods 2, the structural strength between the two limiting square tubes 1 and the support plate 4 can be improved, facilitating the stable placement of the support frame. By setting the first connecting rod 7 and two second connecting rods 9, the structural strength at the crossbar 8 and the arc-shaped support rod 10 can be improved, facilitating stable support inside the roadway. The overall design is reasonable, facilitating modular design and rapid assembly inside the roadway, making it easy to promote and use.

[0029] 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 support frame for coal mining roadways, characterized in that: It includes two limiting square tubes (1), each of which is slidably connected to a support tube (11). The bottom ends of the two limiting square tubes (1) are fixedly connected to a support plate (4), which extends to both sides of the two limiting square tubes (1). Limiting grooves (12) are opened on both sides of the two limiting square tubes (1). A support block (6) is fixedly connected to one side of each of the two support tubes (11). A jack (5) is provided on one side of the top surface of each of the two support plates (4), and the output ends of the two jacks are respectively connected to the bottom ends of the two support blocks (6). Multiple pads (3) are provided between the bottom ends of the two support tubes (11) and the support plates (4). A crossbar (8) is provided at the top of the two support tubes (11). First limiting blocks (13) are fixedly connected to both sides of the top surface of the crossbar (8). Arc-shaped support rods (10) are provided on the outer walls of the two first limiting blocks (13).

2. The support frame for coal mining roadways according to claim 1, characterized in that: Both of the support plates (4) are fixedly connected to the bottom ends of the two limiting square tubes (1) by welding. Both sides of the top surface of the two support plates (4) are fixedly connected with diagonal rods (2). One end of each of the four diagonal rods (2) is fixedly connected to the side of the limiting square tube (1).

3. The support frame for coal mining roadways according to claim 2, characterized in that: Both of the support blocks (6) are L-shaped. One side of the two support blocks (6) is fixedly connected to one side of the support tube (11) by bolts. The two sides of the two support blocks (6) are slidably connected to the side wall of the limiting groove (12).

4. The support frame for coal mining roadways according to claim 3, characterized in that: The bottom surfaces of both support blocks (6) are concave upwards.

5. A support frame for coal mining roadways according to claim 4, characterized in that: The bottom surface of the crossbar (8) is provided with a second limiting block (14) on both sides, which is slidably connected to the top of the inner wall of the two support tubes (11).

6. The support frame for coal mining roadways according to claim 5, characterized in that: The bottom surface of the crossbar (8) is provided with two first connecting rods (7), the bottom ends of the two first connecting rods (7) are fixedly connected to the sides of the two support tubes (11) respectively, and the middle part of the top surface of the crossbar (8) is provided with two second connecting rods (9), the top ends of the two second connecting rods (9) are fixedly connected to the arc-shaped support rod (10).

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