Long-distance tunnel stone blasting hole excavation survey lofting positioning device

Abstract

The utility model discloses a long-distance tunnel stone blasting hole excavation survey lofting positioning device, which belongs to the technical field of lofting positioning devices and comprises a survey lofting positioning mechanism, the survey lofting positioning mechanism comprises an anchor rod, a steel plate base is mounted at the bottom end of the anchor rod, and a U-shaped support frame is mounted at the bottom end of the steel plate base. A U-shaped supporting frame is arranged on the steel plate base, a protection assembly is arranged at the top end of the steel plate base, a sleeve is arranged on the inner side of the U-shaped supporting frame, a laser transmitter is installed in the sleeve, and a rechargeable battery is detachably installed at one end of the laser transmitter. The laser is emitted to mark the main contour points of the excavation sideline on the tunnel excavation construction tunnel face, the excavation lofting effect is achieved, meanwhile, the section over-excavation and under-excavation of the previous cycle excavation footage and the deviation of the axis can be judged by judging whether the laser points are irradiated on the tunnel face or not, and the measurement rechecking effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of layout and positioning devices, in particular to a long-distance tunnel stone blasting hole digging measurement layout and positioning device. Background Art

[0002] The most frequent surveying work during underground tunnel excavation is face layout. The core of face layout is to measure and set the drilling and blasting hole positions of the cross section of the excavated tunnel under the premise of ensuring the correct axis layout, so as to ensure the accurate penetration of the tunnel and the accuracy of the excavation section size, and not over-excavate or under-excavate within the allowable range. Therefore, surveying and layout work is very important during tunnel excavation.

[0003] However, tunnel construction involves many space closure processes, and measurement, layout and verification are required during the excavation and lining construction processes. As the tunnel continues to advance, the construction face is getting farther and farther away from the tunnel entrance, which increases the time for measurement and layout, and delays the work time of blasting workers. If there is severe water seepage in the tunnel, the layout time will be even longer, which will eventually have a certain impact on the progress of construction.

[0004] Therefore, in view of the above problems, a long-distance tunnel rock blasting hole excavation measurement and layout positioning device is proposed. Utility Model Content

[0005] To this end, the utility model provides a long-distance tunnel rock blasting hole excavation measurement and layout positioning device. This solution uses three laser emitting accessories at one end of the laser emitter to emit laser to mark the main contour points of the excavation edge line on the tunnel excavation construction face, which not only plays the role of excavation layout, but also can judge whether the cross-section of the previous cycle excavation footage is over-excavated or under-excavated and whether the axis has deviation by whether the laser point is irradiated on the face, thereby playing the role of measurement verification.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A long-distance tunnel stone blasting hole excavation measurement and layout positioning device includes a measurement and layout positioning mechanism, the measurement and layout positioning mechanism includes an anchor rod, a steel plate base is installed at the bottom end of the anchor rod, a U-shaped support frame is installed at the bottom end of the steel plate base, and a protective component is arranged at the top of the steel plate base, a sleeve is arranged on the inner side of the U-shaped support frame, a laser emitter is installed inside the sleeve, a rechargeable battery is detachably installed at one end of the laser emitter, and three laser emission accessories are arranged at the end of the laser emitter away from the battery.

[0008] Furthermore, an external thread is engraved on the outer end of the anchor rod, and through holes are opened inside the steel plate base and the U-shaped support frame, and the anchor rods pass through the through holes inside the steel plate base and the U-shaped support frame.

[0009] Furthermore, a pair of first nuts are threadedly connected to the outer surface of the anchor rod, and the pair of first nuts are respectively abutted against the steel plate base and the U-shaped support frame.

[0010] Furthermore, a connecting block is fixedly connected to the top end of the sleeve, a connecting pin is fixedly connected to the inside of the connecting block, a pair of through holes are opened at the outer end of the U-shaped support frame, and the connecting pins penetrate the pair of through holes.

[0011] Furthermore, both ends of the connecting pin are engraved with threaded sections, and both ends of the connecting pin are threadedly connected with second nuts, and a pair of the second nuts are respectively abutted against two sides of the U-shaped support frame.

[0012] Furthermore, the protection component includes a protection cover, a movable hole is opened inside the protection cover, and the anchor rod passes through the movable hole.

[0013] Furthermore, a plurality of dampers are fixedly connected between the protective cover and the steel plate base, and springs are sleeved on the outer ends of the plurality of dampers.

[0014] Furthermore, the protective cover is arranged in a trumpet shape and is made of high-strength glass material.

[0015] The utility model has the following advantages:

[0016] (1) This solution uses three laser emitting accessories at one end of the laser emitter to emit lasers to mark the main contour points of the excavation edge line on the tunnel excavation construction face. It not only plays the role of excavation layout, but also can judge whether the cross-section of the previous cycle of excavation footage is over-excavated or under-excavated and whether the axis has any deviation by whether the laser point is irradiated on the face, which plays the role of measurement verification.

[0017] (2) The protective cover is located on the top of the laser emitter, which can play a certain shielding role and reduce the probability of the laser emitter being damaged by the falling rock of the tunnel top. In addition, the damper and the spring cooperate with each other to provide a certain buffering effect for the protective cover, further improving the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 A three-dimensional structural diagram of a long-distance tunnel rock blasting hole digging measurement and layout positioning device provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of the protection assembly provided by the utility model;

[0022] Figure 3 A schematic diagram of the explosion structure provided by the utility model;

[0023] Figure 4 The utility model provides a schematic diagram of the working state.

[0024] In the figure:

[0025] 1. Measuring, laying out and positioning mechanism; 2. Anchor rod; 3. Protection assembly; 31. Protection cover; 32. Spring; 33. Damper; 4. Steel plate base; 5. U-shaped support frame; 6. Sleeve; 7. Laser transmitter; 8. First nut; 9. Connecting block; 10. Connecting pin; 11. Second nut. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-4 A long-distance tunnel stone blasting hole excavation measurement and layout positioning device includes a measurement and layout positioning mechanism 1, the measurement and layout positioning mechanism 1 includes an anchor rod 2, a steel plate base 4 is installed at the bottom end of the anchor rod 2, a U-shaped support frame 5 is installed at the bottom end of the steel plate base 4, and a protective component 3 is arranged at the top of the steel plate base 4, a sleeve 6 is arranged on the inner side of the U-shaped support frame 5, a laser emitter 7 is installed inside the sleeve 6, a rechargeable battery is detachably installed at one end of the laser emitter 7, and three laser emission accessories are arranged at the end of the laser emitter 7 away from the battery.

[0028] In this scheme, after the tunnel is excavated for 50m, the anchor rod 2 is installed at the center of the top arch 1m away from the tunnel entrance. The surveying personnel will first perform construction layout to mark the main contour points of the tunnel excavation edge line on the tunnel excavation construction face, and then adjust the three laser emission accessories to align the laser beam with the main contour points marked on the tunnel excavation construction face. After that, the blasting workers can perform cyclic blasting excavation construction through the laser points on the construction face. The surveying personnel only need to review the position of the laser points at regular intervals, and do not need to go to the site to set up instruments to review the excavation contour line and layout the next cycle of excavation edge line every time the footage is advanced. This greatly improves the efficiency of tunnel excavation measurement and layout, and at the same time enables the tunnel excavation axis and over-excavation and under-excavation to be controlled in a timely and effective manner.

[0029] Among them, the anchor rod 2 is used to anchor into the rock of the tunnel top arch, so as to achieve the purpose of fixing the equipment, and one end of the laser emitter 7 can be connected with three laser emission accessories by a spherical joint or a universal joint, and the angles of all of them can be adjusted, so that the emission directions of the three light beams can be adjusted separately, so that the laser beams can be aligned with the main contour points marked on the tunnel excavation construction face.

[0030] Specifically, the main contour points on the tunnel excavation construction face are the top arch center, the left arch point and the right arch point.

[0031] See also Figure 3 The outer end of the anchor rod 2 is engraved with an external thread, and through holes are opened inside the steel plate base 4 and the U-shaped support frame 5. The anchor rod 2 passes through the through holes inside the steel plate base 4 and the U-shaped support frame 5. The outer surface of the anchor rod 2 is threadedly connected with a pair of first nuts 8, and the pair of first nuts 8 are respectively abutted against the steel plate base 4 and the U-shaped support frame 5.

[0032] In this embodiment, the anchor rod 2 is passed through the through holes inside the steel plate base 4 and the U-shaped support frame 5, and a pair of first nuts 8 are tightened so that the pair of first nuts 8 are respectively abutted against the steel plate base 4 and the U-shaped support frame 5, thereby fixing the anchor rod 2, the steel plate base 4 and the U-shaped support frame 5. In addition, the angle of the U-shaped support frame 5 can be adjusted as needed.

[0033] Please continue reading Figure 3 The top end of the sleeve 6 is fixedly connected with a connecting block 9, and the interior of the connecting block 9 is fixedly connected with a connecting pin 10. A pair of through holes are opened at the outer end of the U-shaped support frame 5, and the connecting pins 10 penetrate the pair of through holes. Both ends of the connecting pin 10 are engraved with threaded sections, and both ends of the connecting pin 10 are threadedly connected with second nuts 11, and the pair of second nuts 11 are respectively abutted against the two sides of the U-shaped support frame 5.

[0034] In this embodiment, by respectively passing the two ends of the connecting pin 10 through the U-shaped support frame 5, the elevation angles of the sleeve 6 and the laser emitter 7 can be adjusted as needed, and then a pair of second nuts 11 are tightened so that the pair of second nuts 11 are respectively abutted against the two sides of the U-shaped support frame 5, thereby achieving the purpose of fixing the U-shaped support frame 5, the connecting block 9 and the sleeve 6.

[0035] See also Figure 1-2 The protection component 3 includes a protection cover 31, a movable hole is opened inside the protection cover 31, the anchor rod 2 passes through the movable hole, a plurality of dampers 33 are fixedly connected between the protection cover 31 and the steel plate base 4, and the outer ends of the plurality of dampers 33 are all sleeved with springs 32. The protection cover 31 is arranged in a trumpet shape, and the protection cover 31 is made of high-strength glass material.

[0036] In this embodiment, the protective cover 31 is located on the top of the laser emitter 7, which can play a certain shielding role and reduce the probability of the laser emitter 7 being damaged by the falling of the tunnel top arch rock. In addition, the damper 33 and the spring 32 cooperate with each other to provide a certain buffering effect for the protective cover 31, thereby further improving the protection effect.

[0037] The use process of the embodiment of the utility model is as follows:

[0038] After the tunnel is excavated for 50m, the anchor rod 2 is installed at the center of the top arch 1m away from the tunnel entrance. By adjusting the three laser emission accessories at one end of the laser emitter 7, the laser beam is aligned with the main contour points marked on the tunnel excavation construction face. After that, the blasting workers can perform cyclic blasting and excavation construction through the laser points on the construction face. At the same time, whether the laser points are irradiated on the face can be used to judge whether the cross-section of the previous cycle of excavation is over-excavated or under-excavated and whether the axis has deviation, which plays a role in measurement verification.

[0039] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A long-distance tunnel rock blasting hole digging measurement and layout positioning device, comprising a measurement and layout positioning mechanism (1), characterized in that: The measuring, laying out and positioning mechanism (1) comprises an anchor rod (2), a steel plate base (4) is installed at the bottom end of the anchor rod (2), a U-shaped support frame (5) is installed at the bottom end of the steel plate base (4), and a protective component (3) is arranged at the top end of the steel plate base (4), a sleeve (6) is arranged on the inner side of the U-shaped support frame (5), a laser emitter (7) is installed inside the sleeve (6), a rechargeable battery is detachably installed at one end of the laser emitter (7), and three laser emission accessories are arranged at the end of the laser emitter (7) away from the battery.

2. A long-distance tunnel rock blasting hole digging measurement and positioning device as claimed in claim 1, characterized in that: The outer end of the anchor rod (2) is engraved with an external thread, and the steel plate base (4) and the U-shaped support frame (5) are both provided with through holes, and the anchor rod (2) passes through the through holes in the steel plate base (4) and the U-shaped support frame (5).

3. A long-distance tunnel rock blasting hole digging measurement and positioning device as claimed in claim 1, characterized in that: The outer surface of the anchor rod (2) is threadedly connected to a pair of first nuts (8), and the pair of first nuts (8) are respectively in contact with the steel plate base (4) and the U-shaped support frame (5).

4. A long-distance tunnel rock blasting hole digging measurement and positioning device as claimed in claim 1, characterized in that: The top end of the sleeve (6) is fixedly connected to a connecting block (9), the interior of the connecting block (9) is fixedly connected to a connecting pin shaft (10), and a pair of through holes are formed at the outer end of the U-shaped support frame (5), and the connecting pin shaft (10) passes through the pair of through holes.

5. A long-distance tunnel rock blasting hole digging measurement and positioning device as claimed in claim 4, characterized in that: Both ends of the connecting pin shaft (10) are engraved with threaded sections, and both ends of the connecting pin shaft (10) are threadedly connected to second nuts (11), and a pair of the second nuts (11) are respectively abutted against two sides of the U-shaped support frame (5).

6. A long-distance tunnel rock blasting hole digging measurement and positioning device as claimed in claim 1, characterized in that: The protection component (3) comprises a protection cover (31), a movable hole is provided inside the protection cover (31), and the anchor rod (2) passes through the movable hole.

7. A long-distance tunnel rock blasting hole digging measurement and positioning device as claimed in claim 6, characterized in that: A plurality of dampers (33) are fixedly connected between the protective cover (31) and the steel plate base (4), and the outer ends of the plurality of dampers (33) are sleeved with springs (32).

8. A long-distance tunnel rock blasting hole digging measurement and positioning device as claimed in claim 6, characterized in that: The protective cover (31) is arranged in a trumpet shape, and is made of high-strength glass material.

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