Portable roofbolter angle gauge

Abstract

The utility model discloses a portable anchor rod drilling machine angle gauge, and belongs to the technical field of anchor rod and anchor cable construction in underground roadway supporting. The portable roofbolter angle gauge comprises a connecting block body, a flexible lock belt, a buckle, a vertical ruler, a plumb line and an angle graduated scale, two ends of the connecting block body are respectively connected with a flexible lock belt, and one end of the flexible lock belt is provided with a buckle; the lower part of the connecting block body is vertically connected with the vertical ruler, the plumb line is fixed below the connecting block body, and the connecting block body fixes the angle gauge on the jumbolter through the flexible locking belts and the buckles on the two sides; the angle graduated scale is vertically connected with the vertical ruler. The device is simple in structure, low in cost, small in size and convenient to carry; the anchor rod angle positioning device can be conveniently and tightly attached to an anchor rod drilling machine, accurate positioning of the angle of an anchor rod is rapidly achieved, the construction precision of the angle of an anchor rod cable is greatly improved on the premise that construction is not affected, and powerful guarantee is provided for exerting the efficiency of a supporting structure.

Description

Technical Field

[0001] This utility model relates to a portable anchor drilling rig angle instrument, belonging to the technical field of anchor bolt and anchor cable construction in underground roadway support. Background Technology

[0002] Currently, bolt and cable support has become the main support method for coal mine roadways. Roof corner bolts, truss bolts, and truss anchor cables generally form a certain angle (0°~45°) with the roadway roof. Theoretical research and field measurements show that this angle parameter has a significant impact on the mechanical structure and load-bearing capacity of the entire support system. However, the pneumatic bolt drilling rigs used in field construction lack angle measuring devices. Construction workers rely solely on sensory intuition to control the drilling angle, resulting in large construction errors and severely restricting the performance of existing technologies such as truss anchor cables. Utility Model Content

[0003] To address the problem of large construction errors, this invention provides a portable anchor drilling rig angle gauge that can be fixed to the anchor drilling rig for use, thereby enabling accurate control of the construction angle of anchor bolts and cables in roadways.

[0004] The technical solution adopted in this utility model is:

[0005] A portable anchor drilling rig angle gauge includes a connecting block, flexible locking straps, buckles, a vertical ruler, a plumb line, and an angle scale. Flexible locking straps are connected to both ends of the connecting block, and a buckle is provided at one end of each flexible locking strap. A vertical ruler is vertically connected to the lower part of the connecting block, and a plumb line is fixed below the connecting block. The angle gauge is fixed to the anchor drilling rig by the flexible locking straps and buckles on both sides of the connecting block. The angle scale is vertically connected to the vertical ruler.

[0006] Preferably, the ruler and the angle scale are connected by a hinge, and after use, the movable hinge axis folds them together to reduce space occupation.

[0007] Preferably, the ruler and the angle scale are straight rulers of the same length, each 30 cm, and the angle scale corresponds to an angle range of 0~45°. The angle scale displays the angle value, with a marked scale range of 0°~45° and a testing accuracy of 1°; its scale lines are displayed from right to left from 0~45°.

[0008] Preferably, the connecting block has an approximately cuboid structure, with one side designed as an arc. This arc surface contacts the pneumatic outrigger of the anchor drilling rig, and the radius of curvature of the arc surface matches the radius of curvature of the pneumatic outrigger. The contact surface of the connecting block is designed as a matching arc surface with the radius of curvature of the outer circumference of the pneumatic outrigger. Assembly gaps are eliminated through conjugate constraints of the arc surface, thereby ensuring that the positioning reference surface of the ruler fixed on the connecting block is parallel to the axis of the anchor drilling rig.

[0009] Preferably, two connecting plates are symmetrically arranged on both sides of the arc-shaped surface of the connecting block for fastening the flexible locking band. Holes are provided at both ends of the connecting plates, corresponding to threaded holes on the connecting block. The flexible locking band under the connecting plates is fixed to the connecting block by bolts. Further, the connecting plate is a rectangular stamped steel plate with Φ6.5 through holes at both ends. The threaded holes on the connecting block are M6 threaded holes. Pre-tightening force is applied by external hexagonal bolts and elastic washers to ensure a tight connection between the flexible locking band and the connecting block, so that the pressing area in the middle of the connecting plate covers and fixes the end of the flexible locking band to the side of the connecting block.

[0010] Preferably, the ruler is vertically attached to the middle of the lower end face of the connecting block using 502 glue.

[0011] Preferably, a bolt hole is provided at the center of the lower end face of the connecting block, and the top of the plumb line is fixed to the center of the lower end face of the connecting block by a bolt.

[0012] The portable anchor drilling rig angle gauge provided by this utility model has the following beneficial effects:

[0013] (1) Compared with existing angle measuring instruments, this utility model has a simple structure, low cost, small size and easy portability;

[0014] (2) It can be easily and closely fitted with the anchor drilling machine to quickly and accurately position the anchor angle. Without affecting the construction, it greatly improves the construction accuracy of the anchor cable angle and provides a strong guarantee for the performance of the support structure.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 The right view;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting blocks;

[0019] Figure 4 yes Figure 3 A bottom view;

[0020] Figure 5 This is a schematic diagram of the working status of the angle gauge of the portable anchor drilling rig.

[0021] In the diagram: 1. Connecting block, 2. Flexible locking strap, 3. Buckle, 4. Vertical ruler, 5. Plumb line, 6. Angle scale, 7. Hinge shaft, 8. Pneumatic outrigger of anchor drill, 9. Connecting piece, 10. Arc-shaped surface, 11. Threaded holes on both sides, 12. Threaded hole on the lower end face, 13. Lower end face. Detailed Implementation Example

[0022] like Figures 1-5 As shown, a portable anchor drilling rig angle gauge includes a connecting block 1, flexible locking straps 2, buckles 3, a vertical ruler 4, a plumb line 5, and an angle scale 6. Flexible locking straps 2 are connected to both ends of the connecting block 1, and a buckle 3 is provided at one end of each flexible locking strap 2. The vertical ruler 4 is vertically connected to the lower part of the connecting block 1, and the plumb line 5 is fixed below the connecting block 1. The connecting block is fixed to the anchor drilling rig by the flexible locking straps and buckles on both sides. The angle scale is vertically connected to the vertical ruler 4.

[0023] As a preferred embodiment, the ruler 4 and the angle scale 6 are connected by a hinge. After use, the hinge shaft can be moved to fold them together, reducing space occupation. Specifically, the angle scale 6 and the ruler 4 are connected by a hinge shaft 7. During use, the hinge shaft 7 is rotated so that the angle scale 6 and the ruler 4 form a 90° angle.

[0024] As a preferred embodiment, the ruler 4 and the angle scale 6 are both straight rulers of the same length, 30cm each. The angle scale 6 corresponds to an angle range of 0~45°. The angle scale displays the angle value, with a marked scale range of 0°~45° and a testing accuracy of 1°; its scale lines display 0~45° from right to left. Since the air leg of a typical drilling rig is about 1m long, the ruler length is fixed at 30cm for ease of use.

[0025] As a preferred embodiment, the connecting block 1 has an approximately cuboid structure, with one side designed as an arc surface 10. This arc surface 10 contacts the pneumatic outrigger 8 of the anchor drilling rig. The radius of curvature of the arc surface matches the radius of curvature of the pneumatic outrigger. The design principle is as follows: the contact surface of the connecting block 1 is designed as a matching arc surface with the radius of curvature of the outer circumference of the pneumatic outrigger. Assembly gaps are eliminated through conjugate constraints of the arc surface, thereby ensuring that the positioning reference surface of the ruler 4 fixed on the connecting block 1 is parallel to the axis of the anchor drilling rig. This design ensures that the connecting block can fit tightly against the surface of the pneumatic outrigger, thus making the ruler parallel to the axis of the anchor drilling rig.

[0026] As a preferred embodiment, two connecting plates 9 are symmetrically arranged on both sides of the arc-shaped surface of the connecting block 1 for fastening the flexible locking band 2. Holes are provided at both ends of the connecting plates 9, corresponding to the threaded holes 11 on both sides of the connecting block 1. The flexible locking band 2 under the connecting plates 9 is fixed to the connecting block 1 by bolts. Further, the connecting plates 9 are rectangular stamped steel plates with Φ6.5 through holes at both ends. The threaded holes on the connecting block are M6 threaded holes. An axial preload of 8kN is applied by external hexagonal bolts and elastic washers, causing the pressing area in the middle of the connecting plates to cover and fix the end of the flexible locking band to the side of the connecting block 1. Figure 3 As shown.

[0027] As a preferred embodiment, the ruler 4 is vertically attached to the center of the lower end face of the connecting block using 502 glue. For example... Figure 4 As shown.

[0028] Specifically, a threaded hole 12 is provided at the center of the lower end face 13 of the connecting block, and the top of the plumb line is fixed to the center of the lower end face 13 of the connecting block by bolts. Figure 4 As shown.

[0029] The specific usage method is as follows: Figure 5 As shown, the arc-shaped surface of the connecting block 1 contacts the pneumatic support leg 8 of the anchor drilling machine. The device of this utility model is tightly attached to the drilling machine by the flexible locking strap 2. At this time, the vertical ruler 4 is parallel to the axis of the anchor drilling machine, the angle scale is perpendicular to the vertical ruler, and the angle φ formed by the plumb line and the vertical ruler is the angle between the anchor drilling machine and the vertical direction.

[0030] The angle markings on the angle ruler are derived from the arctangent function. The principle of angle ruler measurement is as follows: Figure 5 As shown, the length of the ruler is 30cm, and the distance from the point where the plumb line intersects the angle scale to the hinge point is L, in cm. The angle is calculated using the arctangent function, specifically: This corresponds to the scale range of 0° to 45° marked on the angle ruler, which is consistent with the offset angle during the use of the drilling rig.

[0031] Specifically, the angle measuring instrument provided by this utility model has a vertical ruler length of 30cm (suitable for commonly used MQT series anchor drilling rigs in wells, matching the rig size). An angle scale is designed using the above formula to convert the corresponding length into an angle. The angle value can be directly read during testing.

[0032] This invention has a simple structure and low cost, and can effectively solve the problem of drilling angle positioning during anchor cable construction.

Claims

1. A portable anchor drilling rig angle gauge, characterized in that: It includes a connecting block, flexible locking straps, buckles, a vertical ruler, a plumb line, and an angle scale. Flexible locking straps are connected to both ends of the connecting block, and a buckle is provided at one end of each flexible locking strap. A vertical ruler is vertically connected to the lower part of the connecting block, and a plumb line is fixed below the connecting block. The angle gauge is fixed to the anchor drilling rig by the flexible locking straps and buckles on both sides of the connecting block. The angle scale is vertically connected to the vertical ruler.

2. The portable anchor drilling rig angle gauge according to claim 1, characterized in that: The ruler and angle scale are connected by a hinge. After use, the movable hinge axis folds the two together to reduce space occupation.

3. The portable anchor drilling rig angle gauge according to claim 2, characterized in that: The ruler and the angle scale are straight rulers of the same length, each 30 cm long, and the angle scale corresponds to an angle range of 0~45°.

4. The portable anchor drilling rig angle gauge according to claim 1, characterized in that: The connecting block is an approximately rectangular parallelepiped structure, with one side designed as an arc. This arc surface contacts the pneumatic outrigger of the anchor drilling rig, and the radius of curvature of the arc surface is consistent with the radius of the pneumatic outrigger.

5. The portable anchor drilling rig angle gauge according to claim 4, characterized in that: Two connecting plates are symmetrically arranged on both sides of the arc-shaped surface of the connecting block for fastening the flexible locking band. Holes are provided at both ends of the connecting plates, which correspond to the threaded holes on the connecting block. The flexible locking band under the connecting plates is fixed to the connecting block by bolts.

6. The portable anchor drilling rig angle gauge according to claim 5, characterized in that: The connecting piece is a rectangular stamped steel plate with Φ6.5 through holes at both ends. The threaded holes on the connecting block are M6 threaded holes. Pre-tightening force is applied by using external hexagonal bolts and elastic washers, so that the pressing area in the middle of the connection covers and fixes the end of the flexible locking band to the side of the connecting block.

7. The portable anchor drilling rig angle gauge according to claim 4, characterized in that: The ruler is vertically attached to the middle of the lower end face of the connecting block using 502 glue.

8. The portable anchor drilling rig angle gauge according to claim 4, characterized in that: A bolt hole is provided at the center of the lower end face of the connecting block, and the top of the plumb line is fixed to the center of the lower end face of the connecting block by bolts.

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