Working face forepoling device for coal mining

Abstract

The utility model relates to the technical field of support, in particular to a working face advance support device for coal mining, which comprises a first support frame, a first extension frame and a bidirectional threaded rod, first telescopic rods are installed at the two ends of the first supporting frame, the other ends of the first telescopic rods are fixedly connected with the second supporting frame, the first extending frame is installed in the first supporting frame, and a second extending frame is installed at the symmetrical position of the first extending frame; the supporting device can be driven to move forwards through cooperation of the first extending frame and the second extending frame, the bidirectional threaded rod is installed in the first extending frame, and the bidirectional threaded rod can change the supporting width to be suitable for roadways with different widths; according to the utility model, the supporting device is more convenient to use, and the supporting frame body is suitable for supporting work of roadways with different widths.

Description

Technical Field

[0001] This utility model relates to the field of support technology, specifically to an advanced support device for working faces in coal mines. Background Technology

[0002] During coal mining, support devices are needed to shield the working face of the roadway to prevent ore from falling and causing damage to construction equipment and personnel. Coal mine roadway support includes permanent support, temporary support, and advance support. Advance support for the tunneling face refers to the temporary support of the roof at the unsupported area in front of the tunneling face to control the roof and provide temporary protection for safe operation. Common types include forward-protruding beam support, self-moving step-type advance support, capped point-column support, and suspended beam support. Commonly used support frames cannot change the support width, resulting in certain limitations in their application and making them unsuitable for roadways of different widths. Furthermore, the stability of the support frames is insufficient, and they are prone to swaying during support operations, affecting the normal progress of support work and causing inconvenience in their use, thus hindering their widespread adoption.

[0003] Therefore, we propose an advanced support device for coal mine working faces. Utility Model Content

[0004] The purpose of this utility model is to provide an advanced support device for coal mine working faces to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine working face advance support device, characterized in that it comprises:

[0006] A first support frame is provided, and a second support frame is installed symmetrically to the first support frame. A first telescopic rod is installed at both ends of the first support frame, and the other end of the first telescopic rod is fixedly connected to the second support frame.

[0007] A first extension frame is installed inside the first support frame, and a second extension frame is installed symmetrically to the first extension frame.

[0008] A bidirectional threaded rod is installed inside the first extension frame.

[0009] Preferably, a fixing rod is fixedly connected inside the center of the first support frame and the second support frame, a connecting block is fixedly connected to the outside of the fixing rod, a support rod is fixedly connected to the bottom of the connecting block, and a first hydraulic rod is installed at the bottom of the support rod.

[0010] Preferably, the first extension frame and the second extension frame are symmetrically fixedly connected to the outer sides of the fixing blocks, a connecting rod is installed between the two adjacent fixing blocks, a telescopic sleeve is fixedly connected between the two connecting rods, and a second hydraulic rod is fixedly connected to the bottom of the fixing block.

[0011] Preferably, a transmission block is fixedly connected to the bottom of one of the connecting rods, and a driving hydraulic rod is mounted on the front surface of the transmission block, with the other end of the driving hydraulic rod connected to the support rod. Activating the driving hydraulic rod causes it to pull the support rod and the transmission block respectively, thereby providing force to the first hydraulic rod and the second hydraulic rod respectively.

[0012] Preferably, the connecting rod has a sliding groove at its top, and a sliding plate is fixedly connected to the top of the connecting rod. The sliding plate is slidably connected to the connecting rod through the sliding groove. A meshing block is installed at the top of the connecting rod, and the outer side of the bidirectional threaded rod meshes with the meshing block. A drive motor is installed at one end of the bidirectional threaded rod, and the output end of the drive motor is fixedly connected to the bidirectional threaded rod. When the drive motor is started, it drives the bidirectional threaded rod to rotate. The rotation of the bidirectional threaded rod causes the meshing blocks that are symmetrically meshed on the outer side to move. Since the meshing blocks are fixedly connected to the connecting rod, when the bidirectional threaded rod rotates, the meshing blocks pull the connecting rod towards the center of the bidirectional threaded rod, while the sliding plate slides within the connecting rod through the sliding groove.

[0013] Preferably, the drive motor is electrically controlled by an external power supply.

[0014] Preferably, both the first and second hydraulic rods are fixedly connected to a base plate at their bottoms, and symmetrical fasteners are installed inside the base plate. By utilizing the fasteners installed inside the base plate, the support device is installed in a suitable position to ensure the stability of the support frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: the cooperation of the first extension frame and the second extension frame can drive the support device to move forward; the cooperation of the sliding groove, sliding plate, bidirectional threaded rod, meshing block and drive motor can change the support width to be applicable to roadways of different widths, thereby improving the applicability of the support frame body and making the support frame body suitable for support work in roadways of different widths. This avoids the limitation of the support frame being unable to change the support width, which leads to certain limitations in the use of the support frame and makes it unsuitable for roadways of different widths. The cooperation of the base plate and fixing parts avoids insufficient stability of the support frame, which is prone to shaking during the support process and affects the normal progress of the support work. Attached Figure Description

[0016] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0017] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0019] Figure 4 This is the second partial structural schematic diagram of this utility model.

[0020] In the diagram: 1. First support frame; 2. Second support frame; 3. First telescopic rod; 4. Fixed rod; 5. Connecting block; 6. Support rod; 7. First hydraulic rod; 8. First extension frame; 9. Second extension frame; 10. Fixed block; 11. Connecting rod; 12. Telescopic sleeve; 13. Second hydraulic rod; 14. Transmission block; 15. Drive hydraulic rod; 16. Sliding groove; 17. Sliding plate; 18. Bidirectional threaded rod; 19. Engaging block; 20. Drive motor; 21. Base plate; 22. Fixing component. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 A coal mine face advance support device, comprising:

[0023] A first support frame 1 is provided, and a second support frame 2 is installed symmetrically on the first support frame 1. A first telescopic rod 3 is installed at both ends of the first support frame 1, and the other end of the first telescopic rod 3 is fixedly connected to the second support frame 2.

[0024] First extension frame 8, the first extension frame 8 is installed inside the first support frame 1, and second extension frame 9 is installed symmetrically at the first extension frame 8;

[0025] A bidirectional threaded rod 18 is installed inside the first extension frame 8.

[0026] Please see Figure 1-4 A fixing rod 4 is fixedly connected inside the center of the first support frame 1 and the second support frame 2. A connecting block 5 is fixedly connected to the outside of the fixing rod 4. A support rod 6 is fixedly connected to the bottom of the connecting block 5. A first hydraulic rod 7 is installed at the bottom of the support rod 6.

[0027] Please see Figure 1-4 The first extension frame 8 and the second extension frame 9 are symmetrically fixedly connected to the outer sides of the fixing blocks 10. A connecting rod 11 is installed between the two adjacent fixing blocks 10. A telescopic sleeve 12 is fixedly connected between the two connecting rods 11. A second hydraulic rod 13 is fixedly connected to the bottom of the fixing block 10.

[0028] Please see Figure 1-4 A transmission block 14 is fixedly connected to the bottom of one of the connecting rods 11. A driving hydraulic rod 15 is mounted on the front surface of the transmission block 14, and the other end of the driving hydraulic rod 15 is connected to the support rod 6. When the driving hydraulic rod 15 is activated, it pulls the support rod 6 and the transmission block 14 respectively, thereby providing force to the first hydraulic rod 7 and the second hydraulic rod 13 respectively.

[0029] Please see Figure 1-4 The connecting rod 11 has a sliding groove 16 at its top, and a sliding plate 17 is fixedly connected to the top of the connecting rod 11. The sliding plate 17 is slidably connected to the connecting rod 11 through the sliding groove 16. A meshing block 19 is installed on the top of the connecting rod 11, and the outer side of the bidirectional threaded rod 18 is meshed with the meshing block 19. A drive motor 20 is installed at one end of the bidirectional threaded rod 18, and the output end of the drive motor 20 is fixedly connected to the bidirectional threaded rod 18. When the drive motor 20 is started, the drive motor 20 drives the bidirectional threaded rod 18 to rotate. The rotation of the bidirectional threaded rod 18 drives the meshing blocks 19, which are symmetrically meshed on the outer side, to move. Since the meshing blocks 19 are fixedly connected to the connecting rod 11, when the bidirectional threaded rod 18 rotates, the meshing blocks 19 pull the connecting rod 11 towards the center of the bidirectional threaded rod 18, while the sliding plate 17 slides within the connecting rod 11 through the sliding groove 16.

[0030] Please see Figure 1-4 The drive motor 20 is electrically controlled by an external power supply.

[0031] Please see Figure 1-4 The bottom of both the first hydraulic rod 7 and the second hydraulic rod 13 is fixedly connected to a base plate 21, and fixing components 22 are symmetrically installed inside the base plate 21. Using the fixing components 22 installed inside the base plate 21, the support device is installed in a suitable position to ensure the stability of the support frame.

[0032] Working principle: When using this device, if it is necessary to adjust the support width for roadways of different widths, the drive motor 20 is started. The drive motor 20 drives the bidirectional threaded rod 18 to rotate. The rotation of the bidirectional threaded rod 18 drives the outer symmetrically meshing engagement blocks 19 to move. Since the engagement blocks 19 are fixedly connected to the connecting rod 11, when the bidirectional threaded rod 18 rotates, the engagement blocks 19 pull the connecting rod 11 towards the center of the bidirectional threaded rod 18. The sliding plate 17 slides within the connecting rod 11 through the cooperation of the sliding groove 16. When it is necessary to fix the support device, the fixing parts 22 installed inside the base plate 21 are used to fix the support device. Installed in a suitable location to ensure the stability of the support frame, when movement is required, the drive hydraulic rod 15 is activated. The drive hydraulic rod 15 pulls the support rod 6 and the transmission block 14 respectively, thereby providing force to the first hydraulic rod 7 and the second hydraulic rod 13 respectively. First, the second hydraulic rod 13 remains stable. Under the pulling action of the drive hydraulic rod 15, the first hydraulic rod 7 drives the first support frame 1 and the second support frame 2 to move as a whole until the first hydraulic rod 7 stabilizes. Then, the first hydraulic rod 7 remains unchanged. Under the pulling action of the drive hydraulic rod 15, the second hydraulic rod 13 drives the first extension frame 8 and the second extension frame 9 to move as a whole. This process is repeated to achieve forward movement.

[0033] 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.

[0034] 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 coal mine face advance support device, characterized in that, include: A first support frame (1) is provided, and a second support frame (2) is installed symmetrically on the first support frame (1). A first telescopic rod (3) is installed at both ends of the first support frame (1), and the other end of the first telescopic rod (3) is fixedly connected to the second support frame (2). The first extension frame (8) is installed inside the first support frame (1), and the second extension frame (9) is installed symmetrically to the first extension frame (8). A bidirectional threaded rod (18) is installed inside the first extension frame (8).

2. The coal mine working face advance support device according to claim 1, characterized in that: A fixing rod (4) is fixedly connected inside the center of the first support frame (1) and the second support frame (2). A connecting block (5) is fixedly connected to the outside of the fixing rod (4). A support rod (6) is fixedly connected to the bottom of the connecting block (5). A first hydraulic rod (7) is installed at the bottom of the support rod (6).

3. A coal mine working face advance support device according to claim 1, characterized in that: The first extension frame (8) and the second extension frame (9) are symmetrically fixedly connected to the outer side of the fixed blocks (10), and the two adjacent fixed blocks (10) are connected to the connecting rods (11), and the two connecting rods (11) are fixedly connected to the telescopic sleeve (12). The bottom of the fixed block (10) is fixedly connected to the second hydraulic rod (13).

4. A coal mine working face advance support device according to claim 1, characterized in that: A transmission block (14) is fixedly connected to the bottom of one of the connecting rods (11), and a driving hydraulic rod (15) is installed on the front end surface of the transmission block (14), and the other end of the driving hydraulic rod (15) is connected to the support rod (6).

5. A coal mine working face advance support device according to claim 1, characterized in that: The top of the connecting rod (11) is provided with a sliding groove (16), and a sliding plate (17) is fixedly connected to the top of the connecting rod (11). The sliding plate (17) is slidably connected to the connecting rod (11) through the cooperation of the sliding groove (16). A meshing block (19) is installed on the top of the connecting rod (11), and the outer side of the bidirectional threaded rod (18) is meshed with the meshing block (19). A drive motor (20) is installed at one end of the bidirectional threaded rod (18), and the output end of the drive motor (20) is fixedly connected to the bidirectional threaded rod (18).

6. A coal mine working face advance support device according to claim 1, characterized in that: The drive motor (20) is electrically controlled by an external power supply.

7. A coal mine working face advance support device according to claim 1, characterized in that: The bottom of the first hydraulic rod (7) and the second hydraulic rod (13) are both fixedly connected to a base plate (21), and the base plate (21) is symmetrically equipped with fasteners (22).

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