Radian adjusting device of coal mine tunnel supporting anchor mesh belt

Abstract

The utility model relates to a radian adjusting device for a coal mine tunnel support anchor mesh belt, which belongs to the technical field of machining equipment and comprises a fixed frame, two bottom angle carrier rollers and a top angle carrier roller are rotatably arranged in the fixed frame, and the two bottom angle carrier rollers and the top angle carrier roller are distributed in a triangular shape; the vertex angle carrier roller can be arranged in the fixed frame in a sliding mode. The fixing frame supports and accommodates the three carrier rollers, the anchor mesh belt passes through the space between the top angle carrier roller and the two bottom angle carrier rollers, three contact points are formed on the anchor mesh belt through the three carrier rollers, the anchor mesh belt is pushed to penetrate through the device, and then the bending radian of the anchor mesh belt is operated. The position of the vertex angle carrier roller in the fixed frame is adjusted, so that the bending radian of the anchor mesh belt can be controlled; and therefore, the labor intensity of manual operation can be avoided, the occurrence rate of hurting people due to springback is avoided, and the breakage of the anchor mesh belt caused by repeated operation is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing equipment, in particular to a radian adjustment device for a coal mine tunnel supporting anchor mesh belt. Background Art

[0002] The tunnel anchor belt is a special anchor belt used in underground tunnels such as coal mines. Its main function is to set anchor rods in the tunnel to support the tunnel and ensure the stability of the tunnel. The tunnel anchor belt is usually woven with high-strength metal wire or steel wire, has strong tensile strength and wear resistance, and can withstand a lot of pressure and impact underground.

[0003] The support of coal mine tunnels has gone through a long process from wooden support, masonry support, steel support to anchor support. Practical experience at home and abroad over the years has shown that anchor mesh belt support is an economical and effective support technology. Compared with shed-type support, anchor mesh belt support significantly improves the tunnel support effect, reduces the tunnel support cost, and reduces the labor intensity of workers. More importantly, anchor mesh belt support greatly simplifies the end support and advance support process of the coal mining face, ensuring safe production. In order to improve the deformation resistance of the tunnel, the anchor mesh belt needs to be fixed to the roof with anchor rods when used for roof support. Since most of the tunnels adopt circular arches and semi-circular arches, for the convenience of transportation, the anchor mesh belt is transported straight to the construction site before support. According to the circular arches and semi-circular arches of the tunnels adopted on site, they are manually bent into circular and semi-circular shapes.

[0004] shortcoming:

[0005] (1) The anchor mesh belt fixing hole is manually placed on the head of the anchor mesh belt that has been supported on the side of the tunnel, and two people move the anchor mesh belt to adjust the curvature. Due to the high flexibility of the anchor mesh belt, there is a safety risk of easy rebound and injury.

[0006] (2) The bending arc is not appropriate and needs to be adjusted repeatedly. Repeated bending will reduce the service life of the anchor belt. Utility Model Content

[0007] In order to solve the problem in the prior art that the anchor mesh belt needs to be bent into an arc by manual movement, but is prone to rebound and injuring people due to its high flexibility, the utility model provides an arc adjustment device for the anchor mesh belt of coal mine tunnel support.

[0008] The utility model is realized by the following technical solutions:

[0009] A device for adjusting the curvature of an anchor belt for supporting a coal mine tunnel comprises a fixed frame, wherein two bottom angle rollers and one top angle roller are rotatably arranged in the fixed frame, and the two bottom angle rollers and one top angle roller are distributed in a triangle; the top angle roller can be slidably arranged in the fixed frame.

[0010] The fixed frame supports and accommodates the three rollers, and the anchor mesh belt passes between the top angle roller and the two bottom angle rollers. The three rollers form three contact points for the anchor mesh belt, and as the anchor mesh belt is pushed through the device, the bending curvature of the anchor mesh belt is operated. The position of the top angle roller in the fixed frame is adjusted so that the bending curvature of the anchor mesh belt can be controlled, which helps to avoid the labor intensity of manual operation, avoid the incidence of rebound injuries, and reduce the damage to the anchor mesh belt caused by repeated operations.

[0011] A further improvement of the utility model is that the two bottom angle rollers and one top angle roller are distributed in an isosceles triangle, which helps to improve the uniformity of the bending of the anchor belt and realize the arc shape of the top of the tunnel.

[0012] A further improvement of the utility model is that an adjustment slot is provided on the fixed frame, and the length direction of the adjustment slot is perpendicular to the connection line between the two bottom angle rollers. The shaft of the top angle roller extends into the adjustment slot, and the length of the top angle roller to the midpoint of the two bottom angle rollers is adjusted, thereby adjusting the curvature of the anchor belt.

[0013] A further improvement of the utility model is that the position of the top angle roller in the adjustment slot is limited by a locking piece.

[0014] A further improvement of the utility model is that an angle indicator is provided on the fixed frame, which helps to measure the curvature of the anchor net belt.

[0015] A further improvement of the utility model is that two of the above-mentioned angle indicators are provided, the two angle indicators are symmetrically arranged on both sides of the top angle roller, and the connecting line between the two angle indicators is parallel to the connecting line between the two bottom angle rollers.

[0016] It can be seen from the above technical scheme that the beneficial effects of the utility model are: the fixed frame supports and accommodates the three rollers, and the anchor mesh belt passes between the top angle roller and the two bottom angle rollers, and the three rollers are used to form three contact points with the anchor mesh belt. As the anchor mesh belt is pushed through the device, the bending curvature of the anchor mesh belt is operated; the position of the top angle roller is adjusted in the fixed frame, so that the bending curvature of the anchor mesh belt can be controlled; thereby helping to avoid the labor intensity of manual operation, avoid the incidence of rebound injuries, and reduce the damage to the anchor mesh belt caused by repeated operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the attached drawings required for the description. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these drawings.

[0018] Figure 1 It is the first structural schematic diagram of the specific embodiment of the present utility model.

[0019] Figure 2 It is the second structural schematic diagram of the specific embodiment of the present utility model.

[0020] Figure 3 It is the third structural schematic diagram of the specific embodiment of the present utility model.

[0021] In the attached drawings: 10, fixed frame; 11, adjustment slot; 20, bottom corner idler; 30, top corner idler; 40, angle indicator; 50, locking member. Specific embodiment

[0022] To make the purpose, features, and advantages of the present utility model more obvious and understandable, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the attached drawings in this specific embodiment. Obviously, the embodiments described below are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this patent.

[0023] As shown in the attached Figure 1-3 drawings, a curvature adjustment device for an anchor net belt for supporting coal mine roadways includes a fixed frame 10. Two bottom corner idlers 20 and one top corner idler 30 are rotatably arranged inside the fixed frame 10. The two bottom corner idlers 20 and one top corner idler 30 are distributed in a triangular shape; the two bottom corner idlers 20 and one top corner idler 30 are distributed in an isosceles triangle shape. This helps to improve the uniformity of the bending of the anchor net belt and achieve the arc shape of the roadway roof.

[0024] The cross-section of the fixed frame 10 is generally in a U-shaped structure. Among them, the two bottom corner idlers 20 are close to and distributed along the vertical sides of the fixed frame 10. At the same time, the edges of the top and bottom sides of the fixed frame 10 away from the vertical sides are arc-shaped, which helps to increase the observation visual field range of the internal space of the fixed frame 10.

[0025] The top angle roller 30 can be slidably arranged in the fixed frame 10. The fixed frame 10 is provided with an adjustment slot 11, and the length direction of the adjustment slot 11 is perpendicular to the connection line between the two bottom angle rollers 20. The shaft of the top angle roller 30 extends into the adjustment slot 11, and then the length of the top angle roller 30 to the midpoint of the two bottom angle rollers 20 is adjusted, and then the curvature of the anchor belt is adjusted.

[0026] The position of the top angle roller 30 in the adjustment slot 11 is limited by a locking member. The locking member includes a thread and a fastening nut. The end of the shaft of the top angle roller 30 is provided with a thread. The fastening nut cooperates with the thread passing through the adjustment slot 11 on the outside of the fixed frame 10 to complete the position fixation of the top angle roller 30 in the adjustment slot 11.

[0027] The fixed frame 10 is provided with an angle indicator, which is installed on the top or bottom edge of the fixed frame 10. The angle indicator helps to measure the curvature of the anchor belt. The angle indicator is provided with two, and the two angle indicators are symmetrically arranged on both sides of the top angle roller 30, and the connecting line between the two angle indicators is parallel to the connecting line between the two bottom angle rollers 20.

[0028] In summary, the operating principle of the device is that the top angle roller 30 and the two bottom angle rollers 20 are staggered so that the anchor mesh belt passing through the device changes.

[0029] In order to increase the applicability of the curvature processing of the anchor mesh belt, another adjustment slot 11 for moving the bottom corner roller 20 can be added to the fixed frame 10. The adjustment slot 11 extends along the vertical side of the fixed frame 10. At the same time, in order to limit the position of the bottom corner roller 20, a locking piece needs to be provided in the adjustment slot 11.

[0030] The utility model discloses a device for adjusting the curvature of an anchor belt for supporting a coal mine tunnel. A fixed frame supports and accommodates three rollers. The anchor belt passes between a top angle roller and two bottom angle rollers. The three rollers are used to form three contact points for the anchor belt. As the anchor belt is pushed through the device, the bending curvature of the anchor belt is operated. The position of the top angle roller is adjusted in the fixed frame so that the bending curvature of the anchor belt can be controlled. This helps to avoid the labor intensity of manual operation, avoid the incidence of rebound injuries, and reduce the damage to the anchor belt caused by repeated operations.

[0031] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0032] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for adjusting the curvature of an anchor belt for supporting a coal mine tunnel, comprising a fixed frame (10), characterized in that: Two bottom angle rollers (20) and one top angle roller (30) are rotatably arranged in the fixed frame (10), and the two bottom angle rollers (20) and the one top angle roller (30) are distributed in a triangle; the top angle roller (30) can be slidably arranged in the fixed frame (10).

2. The device for adjusting the curvature of an anchor belt for supporting a coal mine tunnel according to claim 1, characterized in that: The two bottom angle rollers (20) and one top angle roller (30) are distributed in an isosceles triangle.

3. The device for adjusting the curvature of the anchor belt for supporting coal mine tunnels according to claim 2 is characterized in that: The fixed frame (10) is provided with an adjustment slot hole (11), and the length direction of the adjustment slot hole (11) is perpendicular to the connection line between the two bottom angle rollers (20).

4. The device for adjusting the curvature of the anchor belt for supporting coal mine tunnels according to claim 3 is characterized in that: The position of the top angle roller (30) in the adjustment slot (11) is limited by a locking piece.

5. The radian adjustment device for coal mine tunnel support anchor belt according to any one of claims 1 to 4, characterized in that: An angle indicator is provided on the fixed frame (10).

6. The device for adjusting the curvature of the anchor belt for supporting coal mine tunnels according to claim 5, characterized in that: Two angle indicators are provided, and the two angle indicators are symmetrically arranged on both sides of the top angle roller (30), and the connection line between the two angle indicators is parallel to the connection line between the two bottom angle rollers (20).

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