Deflection measuring device for underground anchor net support metal net

Abstract

The utility model discloses a deflection measuring device for an underground anchor net support metal net, which relates to the technical field of support engineering testing and comprises a main measuring piece, one end of the main measuring piece is detachably connected to an anchor rod, the other end of the main measuring piece is slidably connected with a vertical connecting piece, and one end of the vertical connecting piece far away from the main measuring piece is slidably connected with an auxiliary measuring piece. The device is used for measuring deflection of different positions on a metal net. The device can be used for field measurement, the two ends of the vertical connecting piece are connected with the main measuring piece and the auxiliary measuring piece in a sliding mode respectively, deflection of different positions on a metal net can be conveniently measured, deflection data of the metal net can be obtained through measurement data of the main measuring piece and the auxiliary measuring piece, and the strength of an anchor net supporting and protecting meter can be conveniently calculated; the device is simple in structure and convenient to operate, and the measuring and calculating result can effectively make up the blank of anchor net support surface protection strength measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of support engineering testing, in particular to a device for measuring the deflection of an underground anchor net support metal net. Background Art

[0002] As the mining section and mining depth in the mine continue to increase, the geological mechanical environment of the tunnel is becoming more and more complex. The anchor mesh support structure plays an important role in ensuring the stability of the tunnel rock wall.

[0003] The anchor mesh support structure is a metal mesh fixed to the rock wall of the tunnel through anchor rods. In addition to preventing the collapse of the rock wall, the metal mesh also transmits the loose rock wall pressure between the anchor rods, so that the anchor mesh support structure is evenly stressed.

[0004] At present, most of the use of anchor rods is still based on experience, and the anchor rod strength is often excessive, while the metal mesh surface strength is insufficient, which easily leads to a waste of resources. The existing technology can calculate the force of the metal mesh on the rock wall through the mechanical model, but the metal mesh deflection data required in the calculation process is difficult to measure in the actual situation under the mine. Utility Model Content

[0005] In view of this, the utility model provides a device for measuring the deflection of an underground anchor mesh support metal mesh to solve the problems raised in the above-mentioned background technology.

[0006] A device for measuring the deflection of an underground anchor mesh support metal mesh comprises a main measuring piece, one end of which is detachably connected to an anchor rod, and the other end is slidably connected to a vertical connecting piece, and the end of the vertical connecting piece away from the main measuring piece is slidably connected to an auxiliary measuring piece for measuring the deflection at different positions on the metal mesh.

[0007] Furthermore, the main measuring part includes a main scale and a sleeve, one end of the sleeve is detachably connected to the anchor rod, and the other end is hinged to the main scale.

[0008] Furthermore, the vertical connecting member includes a vertical scale and a sliding connecting block one, the sliding connecting block one is provided with a sliding groove two on the front side and a sliding groove one on the rear side, the main scale is slidingly connected in the sliding groove one at one end away from the sleeve, the top end of the vertical scale is slidingly connected in the sliding groove two, and the vertical scale is arranged perpendicularly to the main scale.

[0009] Furthermore, the auxiliary measuring part includes an auxiliary ruler, and the vertical connecting part also includes a sliding connecting block 2. The sliding connecting block 2 is provided with a sliding groove 3 on the front side and a sliding groove 4 on the rear side. The bottom end of the vertical ruler is slidably connected to the sliding groove 3, and one end of the auxiliary ruler is slidably connected to the sliding groove 4. The auxiliary ruler is vertically arranged with the vertical ruler, and the auxiliary ruler and the main ruler are arranged in parallel in the same plane.

[0010] Furthermore, the auxiliary ruler is provided with a leg tip at one end away from the sliding connection block 2 for aligning with a measuring point on the metal mesh.

[0011] The beneficial effects of the utility model are:

[0012] The utility model can be used for field measurement, wherein the two ends of the vertical connecting piece are respectively slidably connected to the main measuring piece and the auxiliary measuring piece, which is convenient for measuring the deflection of different positions on the metal mesh. The deflection data of the metal mesh can be obtained through the measurement data of the main measuring piece and the auxiliary measuring piece, which is convenient for calculating the strength of the anchor mesh support and protection table; the utility model has a simple structure and is easy to operate, and its measurement result can effectively fill the gap in the strength measurement of the anchor mesh support and protection table; the main scale is detachably connected to the anchor rod through the sleeve, and can measure the metal meshes fixed on different anchor rods, and is easy to disassemble after the measurement is completed; the sleeve is hinged to the main scale, and the main scale can be rotated along the sleeve, which is convenient for measuring the metal meshes at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0014] Figure 1 The utility model is a structural schematic diagram of a device for measuring the deflection of an underground anchor mesh support metal mesh.

[0015] Figure 2 It is a stereoscopic diagram of a device for measuring the deflection of an underground anchor mesh support metal mesh according to the utility model.

[0016] Figure 3 It is a structural schematic diagram of the sliding connection block 1 in the utility model.

[0017] Figure 4 It is a structural schematic diagram of the connection between the main scale and the sleeve in the utility model.

[0018] Among them, in the figure:

[0019] 1. Sleeve; 2. Main scale; 3. Leg tip; 4. Auxiliary scale; 5. Vertical scale; 6-1. Sliding connection block 1; 6-11. Slide chute 1; 6-12. Slide chute 2; 6-2. Sliding connection block 2; 7. Rock wall; 8. Metal mesh; 9. Anchor rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0023] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0024] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] See attached Figure 1-4 The utility model discloses a device for measuring the deflection of an underground anchor mesh support metal mesh, including a main measuring piece, one end of which is detachably connected to an anchor rod 9, and the other end is slidably connected to a vertical connecting piece, and the end of the vertical connecting piece away from the main measuring piece is slidably connected to a secondary measuring piece, which is used to measure the deflection at different positions on the metal mesh 8.

[0026] In this embodiment, the anchor rod 9 fixes the metal mesh 8 on the rock wall 7, and the two ends of the vertical connecting piece are slidingly connected to the main measuring piece and the auxiliary measuring piece, respectively, to facilitate the measurement of the deflection at different positions on the metal mesh 8. The deflection data of the metal mesh 8 can be obtained through the measurement data of the main measuring piece and the auxiliary measuring piece, which is convenient for calculating the strength of the anchor mesh support guardrail. The utility model has a simple structure and is easy to operate, and its measurement results can effectively fill the gap in the strength measurement of the anchor mesh support guardrail.

[0027] The main measuring part includes a main scale 2 and a sleeve 1. One end of the sleeve 1 is detachably connected to the anchor rod 9, and the other end is hinged to the main scale 2.

[0028] In this embodiment, the main scale 2 is threadedly or snap-connected to the anchor rod 9 through the sleeve 1, so that the metal meshes 8 fixed on different anchor rods 9 can be measured, and it is easy to disassemble after the measurement is completed; the sleeve 1 is hinged to the main scale 2, so the main scale 2 can be rotated along the sleeve 1, which is convenient for measuring the metal meshes 8 at different positions.

[0029] In this embodiment, the main scale 2 is marked with scales, and the sleeve 1 and the main scale 2 are hinged via a damping shaft, that is, after the main scale 2 is rotated to a certain angle, the main scale 2 will not rotate without the action of external force, which is convenient for the operator to read.

[0030] In this embodiment, the vertical connecting member includes a vertical scale 5 and a sliding connecting block 6-1. The front side of the sliding connecting block 6-1 is provided with a sliding groove 6-12, and the rear side is provided with a sliding groove 6-11. The end of the main scale 2 away from the sleeve 1 is slidably connected in the sliding groove 6-11, and the sliding groove 611 is provided with a locking bolt for locking the sliding connecting block 6-1 and the main scale 2. The top end of the vertical scale 5 is slidably connected in the sliding groove 6-12, and the sliding groove 6-12 is provided with a locking bolt for locking the sliding connecting block 6-1 and the vertical scale 5. The vertical scale 5 is vertically arranged to the main scale 2.

[0031] The auxiliary measuring part includes an auxiliary scale 4, and the vertical connecting part also includes a sliding connecting block 2 6-2. The sliding connecting block 2 6-2 is provided with a slide groove 3 on the front side and a slide groove 4 on the rear side. The bottom end of the vertical scale 5 is slidably connected in the slide groove 3, and a locking bolt is provided on the slide groove 3 to lock the sliding connecting block 2 6-2 and the vertical scale 5. One end of the auxiliary scale 4 is slidably connected in the slide groove 4, and a locking bolt is provided on the slide groove 4 to lock the sliding connecting block 2 6-2 and the auxiliary scale 4. The auxiliary scale 4 is vertically arranged with the vertical scale 5, and the auxiliary scale 4 and the main scale 2 are arranged in parallel in the same plane.

[0032] In this embodiment, the sliding connection between the main scale 2 and the slide groove 1 6-11, the sliding connection between the vertical scale 5 and the slide groove 2 6-12, the sliding connection between the vertical scale 5 and the slide groove 3, and the sliding connection between the auxiliary scale 4 and the slide groove 4 are all damped sliding, that is, no relative sliding will occur without the action of external force.

[0033] A leg tip 3 is provided at one end of the auxiliary scale 4 away from the sliding connection block 2 6 - 2 for aligning with a measuring point on the metal mesh 8 .

[0034] Working principle of this embodiment:

[0035] First, determine the position of the measuring point on the metal mesh 8, and connect the sleeve 1 to the anchor rod 9; when measuring, first adjust the vertical position of the auxiliary ruler 4 so that the leg tip 3 of the auxiliary ruler 4 is aligned with the measuring point, and lock the vertical ruler 5 with the sliding connection block 1 6-1 and the sliding connection block 2 6-2 through the locking bolts, then move the auxiliary ruler 4 toward the measuring point so that the leg tip 3 contacts the measuring point, read the scale A where the sliding connection block 6-1 on the main ruler 2 is located, and lock the auxiliary ruler 4 with the sliding connection block 2 6-2 through the locking bolts;

[0036] Then, the relative positions of the vertical ruler 5 and the auxiliary ruler 4 are kept unchanged, the main ruler 2 is rotated, and the leg tip 3 of the auxiliary ruler 4 is aligned with the coal wall that has not been deformed near the anchor rod 9 (if the undeformed coal wall cannot be measured, the vertical position of the auxiliary ruler 4 can also be adjusted accordingly), and the sliding connection block 6-1 is moved so that the leg tip 3 contacts the coal wall, and the scale B where the sliding connection block 6-1 is located on the main ruler 2 is read again, and the scale A is subtracted from the scale B to obtain the axial displacement of the wire of the metal mesh 8, that is, the deflection of the metal mesh 8; and the force of the metal mesh 8 on the rock wall 7 is calculated based on this data, and the support strength of the anchor mesh support system is evaluated based on this indicator;

[0037] When measurement is not needed, the sleeve 1 can be removed from the anchor rod 9.

[0038] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for measuring the deflection of a metal mesh for underground anchor support, characterized in that: It comprises a main measuring piece, one end of which is detachably connected to an anchor rod (9), and the other end of which is slidably connected to a vertical connecting piece, and the end of the vertical connecting piece away from the main measuring piece is slidably connected to an auxiliary measuring piece for measuring the deflection at different positions on the metal mesh (8).

2. The device for measuring the deflection of a metal mesh for underground anchor support according to claim 1, characterized in that: The main measuring part comprises a main scale (2) and a sleeve (1); one end of the sleeve (1) is detachably connected to an anchor rod (9), and the other end is hinged to the main scale (2).

3. The device for measuring the deflection of a metal mesh for underground anchor support according to claim 2, characterized in that: The vertical connecting member comprises a vertical ruler (5) and a sliding connecting block (6-1); the sliding connecting block (6-1) is provided with a second slide groove (6-12) on the front side and a first slide groove (6-11) on the rear side; the end of the main ruler (2) away from the sleeve (1) is slidably connected in the first slide groove (6-11); the top end of the vertical ruler (5) is slidably connected in the second slide groove (6-12); the vertical ruler (5) is vertically arranged with respect to the main ruler (2).

4. The device for measuring the deflection of a metal mesh for underground anchor support according to claim 3, characterized in that: The auxiliary measuring part includes an auxiliary scale (4), and the vertical connecting part also includes a sliding connecting block 2 (6-2). The sliding connecting block 2 (6-2) is provided with a sliding groove 3 on the front side and a sliding groove 4 on the rear side. The bottom end of the vertical scale (5) is slidably connected in the sliding groove 3, and one end of the auxiliary scale (4) is slidably connected in the sliding groove 4. The auxiliary scale (4) is vertically arranged with the vertical scale (5), and the auxiliary scale (4) and the main scale (2) are arranged in parallel in the same plane.

5. The device for measuring the deflection of a metal mesh for underground anchor support according to claim 4, characterized in that: The auxiliary scale (4) is provided with a leg tip (3) at one end away from the second sliding connection block (6-2) for aligning with a measuring point on the metal mesh (8).

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