Grouting support mechanism for mining working face

Abstract

The utility model belongs to the technical field of grouting supporting, and particularly relates to an excavation working face grouting supporting mechanism which comprises a main support, the bottom of the main support is connected with a bottom plate, two buffering clamping assemblies are oppositely installed on the two sides of the top of the main support, and each buffering clamping assembly comprises a fixing back plate. An adjusting assembly is installed on the fixed back plate and comprises a screw rod, the screw rod is sleeved with a base plate in a sliding mode and connected with a nut in a threaded mode, the base plate is clamped between the fixed back plate and the nut, the screw rod penetrates through a spring plate, one end of the screw rod is connected with a clamping block, and the spring plate is clamped between the clamping block and the fixed back plate. The spring plate can provide elastic support for the clamping block, and plays an effective energy-absorbing and buffering role when the clamping block clamps and fixes the grouting pipeline, so that the influence of pipeline vibration on the mounting stability of the bracket is avoided; the limiting assembly and the adjusting assembly can play a role in supporting and limiting, and the supporting stability of the clamping blocks is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of grouting support, and in particular relates to a grouting support mechanism for a mining working face. Background Art

[0002] The utility model patent with authorization announcement number CN221838344U discloses a grouting support mechanism for a mining working face. Its technical solution includes: a fixed frame, a fixed plate, a screw sleeve, and a screw. The top of the fixed frame is embedded with a second bearing, and the inner ring of the second bearing is fixedly mounted with a screw. A servo motor is mounted on the top of the fixed frame above the screw. The screw sleeve is meshed with the screw. A retaining frame is mounted on the side of the screw sleeve facing away from the fixed frame. Hydraulic cylinders are mounted on the front and rear ends of the retaining frame, and clamping blocks are mounted on the opposite ends of the two hydraulic cylinders. A connecting plate is welded to the side of the fixed frame facing away from the retaining frame. The connecting plate has screw holes, and the screw is meshed with the screw holes. A third bearing is mounted on the top of the fixed plate, and the bottom of the screw is fixedly connected to the inner ring of the third bearing. This utility model has the advantage of being able to adjust the height of the support grouting pipeline according to the conditions of the grouting pipeline on site.

[0003] However, the above mechanism has the following problems: The two clamps, supported by the hydraulic cylinder, hold the grouting pipe in place. The clamps rigidly clamp the pipe, but lack a buffer connection between the clamps and the pipe. Due to the grouting pressure and slurry flow, the pipe and its connected equipment and piping system vibrate, which in turn affects the lower support mechanism, affecting its stability. Utility Model Content

[0004] In response to the above problems, the purpose of the present utility model is to provide a grouting support mechanism for a mining working face to solve the problem that the existing grouting support mechanism lacks a buffer connection with the grouting pipe, and the grouting pipe and its connected equipment and piping system vibrate, which will affect the stability of the support mechanism.

[0005] To achieve the above objectives, the utility model adopts the following technical solution: a grouting support mechanism for a mining working face, comprising a main support, the bottom of the main support is connected to a base plate, two buffer clamping assemblies are relatively installed on both sides of the top of the main support, the buffer clamping assembly includes a fixed backing plate, an adjustment assembly is installed on the fixed backing plate, the adjustment assembly includes a screw, a pad is slidably sleeved on the screw and is threadedly connected to a nut, the pad is clamped between the fixed backing plate and the nut, the screw passes through a spring plate and one end of the screw is connected to a clamping block, and the spring plate is clamped between the clamping block and the fixed backing plate.

[0006] The beneficial effects of the utility model are as follows: the spring plate can provide elastic support for the clamping block, and play an effective energy absorption and buffering role when the clamping block clamps and fixes the grouting pipe, thereby preventing the vibration of the pipe from affecting the stability of the bracket installation; the limit assembly and the adjustment assembly can play the role of support and limit, thereby ensuring the stability of the clamping block support.

[0007] In order to ensure the stability of the spring plate's support to the clamping block;

[0008] As a further improvement of the above technical solution: the two ends of the spring plate are pressed against the fixed back plate, one end face of the clamping block is formed with an arc-shaped groove structure adapted to clamp the grouting pipe, and the other end of the clamping block is formed with a groove structure adapted to fit the surface of the spring plate.

[0009] The beneficial effect of this improvement is that the clamping block is arranged in contact with the spring plate, and the use of the limit assembly and the adjustment assembly enables the spring plate to provide stable support for the clamping block during the elastic deformation process.

[0010] In order to make the clamping block play an effective buffering and supporting role on the grouting pipe in different directions;

[0011] As a further improvement of the above technical solution: the end surface of the backing plate facing the fixed back plate is a hemispherical structure, and the end surface of the backing plate facing the nut is a planar structure.

[0012] The beneficial effect of this improvement is that the spherical structure of the pad enables the screw to provide support and guidance for the clamping block while allowing the clamping block to rotate at a small angle, thereby providing effective buffer support for the grouting pipe in multiple directions.

[0013] In order to make the clamping block play an effective buffering and supporting role on the grouting pipe in different directions;

[0014] As a further improvement of the above technical solution: the fixed back plate is installed with a ball head bearing seat in a limiting assembly, a sliding rod is slidably inserted in the ball head bearing seat, and one end of the sliding rod passes through the fixed back plate and is connected to the clamping block.

[0015] The beneficial effect of this improvement is that the sliding rod cooperates with the ball head bearing seat to provide support and guidance for the clamping block while enabling the clamping block to rotate at a small angle, thereby providing effective buffer support for the grouting pipe in multiple directions.

[0016] In order to ensure the stability of the main support;

[0017] As a further improvement of the above technical solution: the main support is a steel truss structure composed of multiple welded steel pipes.

[0018] The beneficial effect of this improvement is that the steel truss structure has stronger bending resistance than the solid-web support and can achieve greater bending strength with less material.

[0019] In order to ensure the stability of the main bracket installation;

[0020] As a further improvement of the above technical solution: there are multiple base plates and they are symmetrically arranged on both sides of the main bracket, and a threaded hole structure is opened on the base plates.

[0021] The beneficial effect of this improvement is that the symmetrically arranged base plates and the use of anchor bolts enable the main bracket to be stably installed in the tunnel to support the grouting pipe.

[0022] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the buffer clamping assembly in the utility model Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the structure of the buffer clamping assembly in the utility model Figure 2 ;

[0026] Figure 4 This is a cross-sectional structural diagram of the utility model;

[0027] In the figure: 1. Main bracket; 2. Base plate; 3. Buffer clamping assembly; 4. Fixed back plate; 6. Limit assembly; 61. Slide rod; 62. Ball bearing seat; 7. Adjustment assembly; 71. Screw; 72. Pad; 73. Nut; 8. Clamping block; 9. Spring plate. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1—4 shows: a grouting support mechanism for a mining working face, comprising a main support 1, wherein the bottom of the main support 1 is connected to a bottom plate 2, and two buffer clamping assemblies 3 are relatively installed on both sides of the top of the main support 1, wherein the buffer clamping assembly 3 comprises a fixed backing plate 4, and an adjustment assembly 7 is installed on the fixed backing plate 4, and the adjustment assembly 7 comprises a screw 71, and a pad 72 is slidably sleeved on the screw 71 and is threadedly connected to a nut 73, and the pad 72 is clamped between the fixed backing plate 4 and the nut 73, and the screw 71 passes through a spring plate 9 and one end of the screw 71 is connected to a clamping block 8, and the spring plate 9 is clamped between the clamping block 8 and the fixed backing plate 4. The spring plate 9 can provide elastic support for the clamping block 8, and play an effective energy absorption and buffering role when the clamping block 8 clamps the fixed grouting pipe, thereby preventing the pipeline vibration from affecting the stability of the bracket installation; the limit assembly 6 and the adjustment assembly 7 can play the role of support and limit, ensuring the stability of the clamping block 8 support, and the two ends of the spring plate 9 are pressed against the fixed back plate 4, and one end face of the clamping block 8 is formed with an arc groove structure adapted to clamp the grouting pipe, and the other end of the clamping block 8 is formed with a groove structure adapted to fit the surface of the spring plate 9, and the clamping block 8 is arranged in contact with the spring plate 9, and the use of the limit assembly 6 and the adjustment assembly 7 enables the spring plate 9 to be able to elastically change The spherical structure of the pad 72 can make the screw 71 provide support and guidance for the clamping block 8 while enabling the clamping block 8 to rotate at a small angle, thereby playing an effective buffering and supporting role for the grouting pipe in multiple directions. The ball head bearing seat 62 in the limit assembly 6 is installed on the fixed back plate 4, and a slide rod 61 is slidably inserted in the ball head bearing seat 62. One end of the slide rod 61 passes through the fixed back plate 4 and is connected to the clamping block 8, sliding The rod 61 cooperates with the ball bearing seat 62 to provide support and guidance for the clamping block 8 while enabling the clamping block 8 to rotate at a small angle, thereby providing effective buffering support for the grouting pipe in multiple directions. The main bracket 1 is a steel truss structure composed of multiple welded steel pipes. The steel truss structure has strong bending resistance compared to the solid bracket and can achieve greater bending strength with less material. There are multiple base plates 2 and they are symmetrically arranged on both sides of the main bracket 1. A threaded hole structure is provided on the base plate 2. The symmetrically arranged base plates 2 cooperate with the use of anchor bolts to enable the main bracket 1 to be stably installed in the tunnel to support the grouting pipe.

[0031] The working principle of this technical solution is: first, the device is installed and fixed in a suitable position according to the position of the grouting pipe, and then the nut 73 is pre-tightened so that the two screws 71 drive the clamping blocks 8 to move away from each other, increasing the distance between the two clamping blocks 8, so that the grouting pipe can be placed between the two clamping blocks 8, and then the nut 73 is reversed to release part of the elastic potential energy of the spring plate 9, driving the two clamping blocks 8 to move toward each other, so that the two clamping blocks 8 are firmly clamped on both sides of the grouting pipe; when the grouting pipe vibrates due to the action of grouting pressure and the flow of slurry, the spring plate 9 plays a role in buffering and supporting the clamping block 8, absorbing the vibration potential energy of the grouting pipe; the slide rod 61 can slide on the inner side of the ball head bearing seat 62 and has a certain rotation angle, thereby cooperating with the screw rod 71 and the pad 72 to provide stable support for the clamping block 8.

[0032] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0033] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A grouting support mechanism for a mining working face, characterized by: The invention comprises a main support (1), wherein the bottom of the main support (1) is connected to a bottom plate (2), and two buffer clamping assemblies (3) are installed on both sides of the top of the main support (1) in a relative manner. The buffer clamping assembly (3) comprises a fixed back plate (4), and an adjustment assembly (7) is installed on the fixed back plate (4). The adjustment assembly (7) comprises a screw (71), a pad (72) is slidably mounted on the screw (71) and is threadedly connected to a nut (73), and the pad (72) is clamped between the fixed back plate (4) and the nut (73), and the screw (71) passes through a spring plate (9) and one end of the screw (71) is connected to a clamping block (8), and the spring plate (9) is clamped between the clamping block (8) and the fixed back plate (4).

2. A grouting support mechanism for a mining working face according to claim 1, characterized in that: The two ends of the spring plate (9) are pressed against the fixed back plate (4), one end surface of the clamping block (8) is formed with an arc-shaped groove structure adapted to clamp the grouting pipe, and the other end of the clamping block (8) is formed with a groove structure adapted to fit the surface of the spring plate (9).

3. The grouting support mechanism for a mining working face according to claim 1, characterized in that: The end surface of one end of the pad (72) facing the fixed back plate (4) is a hemispherical structure, and the end surface of one end of the pad (72) facing the nut (73) is a flat structure.

4. The grouting support mechanism for a mining working face according to claim 1, characterized in that: A ball bearing seat (62) in a limiting assembly (6) is mounted on the fixed back plate (4), a slide rod (61) is slidably inserted into the ball bearing seat (62), and one end of the slide rod (61) passes through the fixed back plate (4) and is connected to the clamping block (8).

5. The grouting support mechanism for a mining working face according to claim 1, characterized in that: The main support (1) is a steel truss structure formed by welding a plurality of steel pipes.

6. The grouting support mechanism for a mining working face according to claim 1, characterized in that: The bottom plates (2) are multiple in number and are symmetrically arranged on both sides of the main bracket (1); a threaded hole structure is provided on the bottom plates (2).

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