A supporting net laying device for coal mine tunneling

Abstract

This utility model relates to the field of mining support technology, specifically a support mesh laying device for coal mine tunneling. It includes a movable base, a storage frame on the top surface of the movable base, two uprights symmetrically fixed to the top surface of the movable base, and grooves on the opposite sidewalls of the two uprights. Two lifting mechanisms are located on the top surface of the movable base, each including a traction rope. In this utility model, through the coordinated arrangement of the movable base, storage frame, uprights, lifting mechanisms, unfolding mechanisms, and clamping mechanisms, and by the vertical lifting of the lifting mechanisms, the deflection of the unfolding mechanisms, and the lateral movement of the movable base, the support mesh can be laid continuously and in one go from one side of the roadway, through the roof, to the other side. Operators mainly perform auxiliary fixing work in the already supported area, greatly improving safety.

Description

Technical Field

[0001] This utility model relates to the field of mining support technology, specifically a support mesh laying device for coal mine tunneling. Background Technology

[0002] In coal mine roadway excavation, roadway support is a core element in ensuring safe production. Among them, "anchor mesh support" is a widely used support method, which involves first laying metal or plastic mesh (called support mesh) on the roof and sidewalls of the roadway, and then pressing it firmly onto the rock surface with anchor bolts and trays to form a continuous protective layer to prevent rock fragments from falling and to improve the overall stability of the surrounding rock. Currently, the laying of support netting in coal mines is mainly done manually. Operators need to transport the rolled support netting to the tunneling face, then work together to unroll the netting and lift it to the roof. Next, they use wire or special connecting buckles to connect adjacent netting sections. Finally, when installing anchor bolts, they use a tray to press the netting down. During this process, the support netting (especially metal netting) is very heavy, and the operators have to work under the roof that is not fully supported. The whole operation is both laborious and time-consuming, and the operators are in a relatively dangerous environment for a long time. This has made the laying of support netting a major bottleneck affecting the rapid tunneling. Utility Model Content

[0003] The purpose of this utility model is to provide a support net laying device for coal mine tunneling, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A support mesh laying device for coal mine tunneling includes a movable base and further includes: A storage box is installed on the top surface of the movable base; Two columns are symmetrically fixed to the top surface of the movable base, and sliding grooves are provided on the opposite side walls of the two columns. Two lifting mechanisms are installed on the top surface of the mobile base, and each lifting mechanism includes a traction rope. The unfolding mechanism includes a mounting base, with both ends of the mounting base slidably connected to two slide grooves, and both ends of the mounting base fixedly connected to the ends of two traction ropes. A rotating seat is rotatably connected inside the mounting base, and a hydraulic cylinder is fixedly connected to the top surface of the rotating seat. A pressure roller is installed at the output end of the hydraulic cylinder. The clamping mechanism is located at the lower part of the column.

[0005] Furthermore, the top surface of the mounting base is provided with a mounting groove, and a motor is installed inside the mounting groove. The output shaft of the motor is connected to the rotating shaft of the rotating base.

[0006] Furthermore, both ends of the mounting base are equipped with limit blocks, and the inside of the slide groove is provided with a limit groove that cooperates with the limit blocks.

[0007] Furthermore, the clamping mechanism includes a second hydraulic cylinder, the output end of which is fixedly connected to a rectangular frame, and a clamping plate is provided inside the rectangular frame. The clamping plate is adjusted and locked by fastening bolts that pass through the rectangular frame.

[0008] Furthermore, the lifting mechanism includes an explosion-proof electric winch fixedly installed on the top surface of the mobile base, with the traction rope wound around the outside of the explosion-proof electric winch.

[0009] Furthermore, the lifting mechanism also includes a guide pulley, which is installed on the top of the corresponding column. The traction rope passes around the guide pulley and extends into the groove to be fixedly connected to the mounting base.

[0010] Furthermore, the roller surface of the pressure roller is made of a material covered with a rubber pad.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By coordinating the movable base, storage box, column, lifting mechanism, unfolding mechanism, and clamping mechanism, the mesh head is clamped by the clamping mechanism after passing around the pressure roller. The hydraulic cylinder pushes the pressure roller closer to one side of the roadway. Through the vertical lifting of the lifting mechanism, the deflection of the unfolding mechanism, and the lateral movement of the movable base, the support mesh is laid continuously from one side of the roadway, through the roof, to the other side. The operators mainly perform auxiliary fixing work in the supported area, which greatly improves safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the unfolding mechanism in this utility model; Figure 4 This is a schematic diagram of the clamping mechanism in this utility model.

[0013] In the diagram: 100, movable base; 200, storage frame; 300, column; 310, chute; 400, lifting mechanism; 410, explosion-proof electric winch; 420, traction rope; 430, guide pulley; 500, unfolding mechanism; 510, mounting base; 511, mounting groove; 512, limit block; 520, rotating base; 530, hydraulic cylinder one; 540, pressure roller; 550, motor; 600, clamping mechanism; 610, hydraulic cylinder two; 620, rectangular frame; 630, clamping plate; 640, fastening bolt; 700, support mesh roll. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-4 In this embodiment of the present invention, a support mesh laying device for coal mine tunneling includes a movable base 100, a storage frame 200, two columns 300, two lifting mechanisms 400, an unfolding mechanism 500, and a clamping mechanism 600. The movable base 100 adopts an explosion-proof rubber wheel or track structure and has a self-propelled function. The storage frame 200 is set on the top surface of the movable base 100 and is used to hold multiple support mesh rolls 700. The two columns 300 are symmetrically fixed on the top surface of the movable base 100. Sliding grooves 310 are opened on the opposite side walls of the two columns 300. The two lifting mechanisms 400 are set on the top surface of the movable base 100 and correspond to the positions of the two columns 300 respectively. The lifting mechanism 400 includes a traction rope 420, and the unfolding mechanism 500 includes a mounting base 510. The two ends of the mounting base 510 are slidably connected to two slide grooves 310, and the two ends of the mounting base 510 are fixedly connected to the ends of two traction ropes 420. A rotating base 520 is rotatably connected inside the mounting base 510. At least two hydraulic cylinders 530 are fixedly connected to the top surface of the rotating base 520. Pressure rollers 540 are installed at the output ends of the two hydraulic cylinders 530. The roller surface of the pressure rollers 540 is made of a material covered with rubber pads to increase friction and prevent damage to the net surface. The clamping mechanism 600 is located at a lower position of the column 300 and is used to clamp the starting end of the support net roll 700.

[0016] Specifically, the device controls the deployment mechanism 500 to rise and fall vertically along the column 300 via the lifting mechanism 400. At the same time, the rotating seat 520 of the deployment mechanism 500 can drive the pressure roller 540 to deflect. During operation, the support net passes over the pressure roller 540 and is fixed at the starting end by the clamping mechanism 600. By controlling the rise and fall and deflection of the deployment mechanism 500 and coordinating with the movement of the movable base 100, the support net can be laid continuously and smoothly between the roadway sidewall and the roof, reducing the labor intensity and safety risks of the operators. Example

[0017] like Figure 2-3As shown, in this embodiment, the top surface of the mounting base 510 is provided with a mounting groove 511. A motor 550 is installed inside the mounting groove 511. The output shaft of the motor 550 is connected to the rotating shaft of the rotating seat 520 via a coupling, thereby driving the rotating seat 520 and the hydraulic cylinder 530 and pressure roller 540 mounted thereon to rotate in a vertical plane. Limiting blocks 512 are provided at both ends of the mounting base 510. The interior of the sliding groove 310 is provided with a limiting groove that cooperates with the limiting block 512, effectively preventing the mounting base from rotating. During the sliding process, 510 disengages from the slide groove 310 to ensure safe operation. The lifting mechanism 400 includes an explosion-proof electric winch 410 fixedly installed on the top surface of the movable base 100. The traction rope 420 is wound around the outside of the explosion-proof electric winch 410. The lifting mechanism 400 also includes a guide pulley 430, which is installed on the top of the corresponding column 300. After the traction rope 420 passes around the guide pulley 430 and changes direction, it extends downward into the slide groove 310 and is fixedly connected to the end of the mounting base 510.

[0018] In this embodiment, during operation, the support mesh roll 700 is placed into the storage box 200. The extended mesh head passes over the pressure roller 540 from above and is clamped by the clamping mechanism 600. The movable base 100 is controlled to approach the side wall of the roadway, and the hydraulic cylinder 530 is activated to extend, pushing the pressure roller 540 to press the mesh sheet firmly against the side wall. Then, the explosion-proof electric winch 410 is activated to wind up the traction rope 420, pulling the entire unfolding mechanism 500 up along the slide 310. During the lifting process, the pressure roller 540 scrapes and spreads the mesh sheet onto the side wall. The operator follows the equipment to temporarily fix the unfolded mesh sheet to the side wall anchor. When the unfolding mechanism 500... When the device is raised to the junction of the sidewall and the roof, the motor 550 starts, driving the rotating seat 520 to rotate the hydraulic cylinder 530 and the pressure roller 540 backward as a whole, so that the pressure roller 540 is aligned with the roof. At the same time, the hydraulic cylinder 530 extends and retracts adaptively to maintain the clamping force. At this time, the moving base 100 begins to move slowly laterally to the opposite side of the roadway. During the movement, the pressure roller 540 lays the mesh on the roof. The operator simultaneously fixes the roof mesh. When the device moves to the other side of the roadway, the explosion-proof electric winch 410 lowers the traction rope 420, causing the unfolding mechanism 500 to move downward and lay the remaining mesh on the sidewall.

[0019] like Figure 4 As shown, in this embodiment, the clamping mechanism 600 includes a second hydraulic cylinder 610. The output end of the second hydraulic cylinder 610 is fixedly connected to a rectangular frame 620. A clamping plate 630 is provided inside the rectangular frame 620. The clamping plate 630 is adjusted and locked by fastening bolts 640 that pass through the rectangular frame 620.

[0020] In practice, after the support mesh roll 700 is placed in the storage frame 200, the mesh head is led out from above, passes over the pressure roller 540, and extends into the rectangular frame 620. By tightening the fastening bolt 640, the clamping plate 630 is pushed to move, thereby clamping the mesh head between the clamping plate 630 and the inner wall of the rectangular frame 620. After controlling the moving base 100 to approach the side wall of the roadway, the hydraulic cylinder 530 and the hydraulic cylinder 610 are activated to press the mesh sheet onto the side wall. When the mesh sheet at the side wall position is temporarily fixed and the moving base 100 needs to be moved, the fastening bolt 640 can be loosened to release the fixation of the mesh head, making the device easy to move.

[0021] In this invention, to facilitate operator control, a PLC controller can be set up, and the explosion-proof electric winch 410, hydraulic cylinder 1 530, motor 550, and hydraulic cylinder 2 610 are all electrically connected to the PLC controller. The system automatically coordinates the sequence and interlocking of lifting, deflection, lateral movement and lowering actions through a preset program. The PLC controller is existing technology and will not be described in detail here.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A support mesh laying device for coal mine tunneling, comprising a movable base (100), characterized in that, Also includes: A storage box (200) is set on the top surface of the movable base (100); Two columns (300) are symmetrically fixed on the top surface of the movable base (100), and the opposite side walls of the two columns (300) are provided with sliding grooves (310). Two lifting mechanisms (400) are disposed on the top surface of the movable base (100), and the lifting mechanism (400) includes a traction rope (420). The unfolding mechanism (500) includes a mounting base (510), the two ends of which are slidably connected to two slide grooves (310) respectively, and the two ends of the mounting base (510) are fixedly connected to the ends of two traction ropes (420) respectively. A rotating seat (520) is rotatably connected inside the mounting base (510), and a hydraulic cylinder (530) is fixedly connected to the top surface of the rotating seat (520). A pressure roller (540) is installed at the output end of the hydraulic cylinder (530). The clamping mechanism (600) is located at the lower part of the column (300).

2. The support mesh laying device for coal mine tunneling according to claim 1, characterized in that, The mounting base (510) has a mounting groove (511) on its top surface. A motor (550) is installed inside the mounting groove (511). The output shaft of the motor (550) is connected to the rotating shaft of the rotating base (520) for transmission.

3. The support mesh laying device for coal mine tunneling according to claim 1 or 2, characterized in that, Both ends of the mounting base (510) are provided with limit blocks (512), and the inside of the slide groove (310) is provided with a limit groove that cooperates with the limit blocks (512).

4. The support mesh laying device for coal mine tunneling according to claim 1, characterized in that, The clamping mechanism (600) includes a second hydraulic cylinder (610), the output end of which is fixedly connected to a rectangular frame (620). A clamping plate (630) is provided inside the rectangular frame (620), and the clamping plate (630) is adjusted and locked by fastening bolts (640) that pass through the rectangular frame (620).

5. The support mesh laying device for coal mine tunneling according to claim 1, characterized in that, The lifting mechanism (400) includes an explosion-proof electric winch (410) fixedly installed on the top surface of the mobile base (100), and the traction rope (420) is wound around the outside of the explosion-proof electric winch (410).

6. The support mesh laying device for coal mine tunneling according to claim 1 or 5, characterized in that, The lifting mechanism (400) also includes a guide pulley (430), which is installed on the top of the corresponding column (300). The traction rope (420) passes around the guide pulley (430) and extends into the groove (310) and is fixedly connected to the mounting base (510).

7. The support mesh laying device for coal mine tunneling according to claim 1, characterized in that, The roller surface of the pressure roller (540) is made of a material covered with a rubber pad.

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