A device for marking a tunneling face position by spraying paint

Abstract

The utility model relates to the technical field of tunnel construction equipment, in view of the problem of low precision, poor efficiency, high safety risk and insufficient marking consistency in traditional tunneling face hole position marking method, provide a kind of tunneling face hole position paint spraying marking device. The device includes support rod, paint spraying sleeve, paint spraying jar, hinge, pressing plate, pull rope and scale. The support rod top is equipped with paint spraying sleeve to install paint spraying jar, and the top end is hinged to pressing plate through hinge, and the pressing plate is abutted at paint spraying jar nozzle, and the tail end is connected with pull rope;The adjustable horizontal scale is connected to the top end of the support rod, which is used for accurately positioning hole spacing. Through mechanical linkage design, pull the pull rope to drive the pressing plate to press the nozzle when operating, and the scale is quickly shifted, to realize the high-precision marking of hole position. The device significantly improves the operation efficiency, eliminates the risk of high-altitude operation, and ensures the marking consistency, and is suitable for tunnel and underground engineering blasting construction.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction equipment, specifically to a spray painting marking device for the face of a tunneling face. Background Technology

[0002] In tunnel and underground engineering excavation, the geological surveying laboratory measures and calibrates the center point to determine the center point of the mining area approach. Based on this center point, a centerline is drawn on the working face of the mining area, and the locations of blast holes are then determined according to this centerline. Accurate marking of hole locations is a crucial step in ensuring blasting effectiveness, support structure stability, and construction safety. Traditional hole location marking mainly relies on manual operation, which has the following technical drawbacks: 1. Low hole positioning accuracy: Existing technologies often use simple tools such as measuring tapes and markers to measure the spacing between boreholes. These tools are significantly affected by human error, especially under complex geological conditions where cumulative deviations can occur, leading to displacement of blasting boreholes and affecting the accuracy of the excavation profile.

[0003] 2. Inefficient labeling: Traditional methods require repeated use of spray paint cans to mark the positions one by one, a tedious and time-consuming process. Statistics show that marking the hole positions on a single tunnel face requires 2-3 workers to work together for more than 2 hours, which is insufficient to meet the fast-paced demands of modern engineering projects.

[0004] 3. Safety hazards of working at height: The working face is typically 2-5 meters high. Workers need to use ladders or scaffolding to mark the top holes, which poses safety risks such as falls and falling tools. In addition, the operation is unstable and the construction efficiency is further reduced in harsh environments.

[0005] 4. Poor label consistency: Manual spray painting is easily affected by factors such as nozzle angle and pressure fluctuations, resulting in inconsistent hole position marks and blurred boundaries, which makes positioning difficult for subsequent drilling operations and increases the cost of correction.

[0006] To address the aforementioned issues, there is an urgent need for a hole location marking device that can achieve high efficiency, accuracy, and safety, in order to improve the level of automation in tunneling construction and reduce labor intensity and safety risks. Utility Model Content

[0007] This invention addresses the technical shortcomings of traditional hole position marking methods, such as low accuracy of manual positioning, poor marking efficiency, high risk of high-altitude operations, and insufficient marking consistency. It provides a hole position spray painting marking device for tunneling faces, which replaces manual operation with a mechanical structure to achieve accurate positioning, efficient marking, and safe operation of hole positions, effectively improving construction quality and efficiency.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A face marking device for tunneling faces includes a paint can, a support rod, a paint sleeve at the top of the support rod, a paint can installed inside the paint sleeve, a hinge at the top of the support rod, a pressure plate hinged to the hinge, the pressure plate abutting against the nozzle at the top of the paint can, a pull rope connected to the end of the pressure plate, and a horizontally set ruler connected to the top of the support rod.

[0009] Furthermore, a height adjustment mechanism is connected to the base plate of the paint spray sleeve. The height adjustment mechanism includes a pad and a wing bolt. The pad is located between the bottom of the paint can and the base plate of the paint spray sleeve, with the top of the pad abutting against the bottom of the paint can. The wing bolt passes through the center of the base plate of the paint spray sleeve, with the end of the wing bolt connected to the bottom of the pad, for adjusting the height of the pad.

[0010] Furthermore, a fastening knob is provided at the top of the support rod, and the scale is fixedly connected to the top of the support rod through the fastening knob.

[0011] Furthermore, the pressure plate is provided with a pressing ball, which abuts against the nozzle at the top of the paint can.

[0012] Furthermore, the support rod is provided with multiple fixing rings, and the pull rope is threaded through the multiple fixing rings.

[0013] Furthermore, the end of the pressure plate is provided with a pull ring, a pull rope is connected to the pull ring, and a pull ring is provided at the bottom end of the pull rope.

[0014] Furthermore, the inner wall of the paint spraying sleeve is provided with polyurethane sponge.

[0015] Furthermore, the support rod is a telescopic rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. Precise positioning eliminates errors: With the linkage design of the scale and pressure plate, the hole spacing error can be controlled within ±2mm, which improves the accuracy compared with traditional manual measurement and is especially suitable for engineering scenarios with high-precision blasting requirements.

[0017] 2. Work efficiency has been significantly improved: Marking can be completed with a single press, and combined with the ruler's quick positioning function, it greatly shortens the construction time.

[0018] 3. Completely eliminate the risks of working at height: The height of the support rod can be adjusted from 0.5 to 4.5m, allowing for full-height hole marking without the need for ladders or scaffolding. This avoids the risks of workers falling from heights and tools falling from heights, significantly reducing the accident rate. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of this utility model; In the diagram, 1-support rod, 2-painting sleeve, 3-painting can, 4-polyurethane foam, 5-hinge, 6-pressure plate, 7-pressing ball, 8-pull ring, 9-pull rope, 10-fixing ring, 11-fastening knob, 12-ruler, 13-pad, 14-wing bolt. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, a face marking device for tunneling faces includes a support rod 1. The support rod 1 is a three-section telescopic rod, and its height can be adjusted during painting operations. The support rod 1 is then held for painting. A paint spray sleeve 2 is welded to the top of the support rod 1, and a paint can 3 is installed inside the paint spray sleeve 2. Polyurethane sponge 4 is pasted on the inner wall of the paint spray sleeve 2 to increase friction and prevent the paint can 3 from rotating.

[0022] The support rod 1 has a hinge 5 at its top, and a pressure plate 6 is hinged to the hinge 5. The pressure plate 6 abuts against the nozzle at the top of the paint can 3. Preferably, the pressure plate 6 has a pressing ball 7, which abuts against the nozzle at the top of the paint can 3. The pressing ball 7 can accurately press the paint cans 3 of different heights to the nozzle position.

[0023] A pull ring 8 is fixedly connected to the end of the pressure plate 6, and a pull rope 9 is connected to the pull ring 8. Multiple fixing rings 10 are provided on the support rod 1, and the pull rope 9 is sequentially threaded through these fixing rings 10, forming a combined structure of support rod 1-pressure plate 6-pull rope 9. This structure fixes the pull rope 9 relative to the support rod 1, preventing it from shifting and affecting the painting operation. The pull ring 8 is located at the bottom of the pull rope 9; during operation, the pull ring 8 can be pulled directly, driving the pull rope 9, which in turn causes the pressure plate 6 to rotate around the hinge 5.

[0024] The top of the support rod 1 is equipped with a fastening knob 11. Plastic rulers 12 of different lengths can be made according to different construction standards to mark the distance of the blast holes in the horizontal direction. The rulers 12 are fixedly connected to the top of the support rod 1 in the horizontal direction through the fastening knob 11.

[0025] Preferably, a height adjustment mechanism is connected to the base plate of the spray gun 2, which can adjust the different heights of the paint cans 3 inside the spray gun 2 to a suitable height. The height adjustment mechanism includes a pad 13 and a wing bolt 14. The pad 13 is located between the bottom of the paint can 3 and the base plate of the spray gun 2, with the top of the pad 13 abutting against the bottom of the paint can 3. The wing bolt 14 passes through the center of the base plate of the spray gun 2, and the end of the wing bolt 14 is connected to the bottom of the pad 13 for adjusting the height of the pad 13.

[0026] The method of using this utility model is as follows: Install the ruler 12 on the top of the support rod 1 and fix it with the fastening knob 11 to ensure that the ruler 12 is horizontal. Then, insert the paint can 3 into the paint sleeve 2 and place the bottom of the paint can 3 on the pad 13. Rotate the wing bolt 14 to adjust the height of the pad 13 so that the pressing ball 7 contacts the nozzle of the paint can 3 but does not squeeze it. Then check whether the pull rope 9 passes smoothly through all the fixing rings 10 and ensure that the end of the pull rope 9 is tied with the pull ring 8. Finally, adjust the support rod 1 to the target height.

[0027] When positioning the paint sprayer, place the support rod 1 vertically towards the working face, align the nozzle of the paint can 3 with the center of the starting hole, pull the pull ring 8 downward with one hand, the pressure plate 6 drives the pressing ball 7 to press down the nozzle, release the pull ring 8, move the support rod 1 to the next scale position along the scale 12, and repeat the marking-shifting action until the entire row of holes is completed.

Claims

1. A device for spraying and marking the face positions of a tunneling face, comprising a paint can (3), characterized in that, Includes a support rod (1), the top of the support rod (1) is provided with a paint spray sleeve (2), a paint spray can (3) is installed inside the paint spray sleeve (2), the top of the support rod (1) is provided with a hinge (5), a pressure plate (6) is hinged on the hinge (5), the pressure plate (6) abuts against the nozzle at the top of the paint spray can (3), the end of the pressure plate (6) is connected to a pull rope (9), and the top of the support rod (1) is connected to a horizontally set ruler (12).

2. The tunnel face marking device according to claim 1, characterized in that, The base plate of the spray gun sleeve (2) is connected to a height adjustment mechanism, which includes a pad (13) and a wing bolt (14). The pad (13) is located between the bottom of the paint can (3) and the base plate of the spray gun sleeve (2). The top of the pad (13) abuts against the bottom of the paint can (3). The wing bolt (14) passes through the center of the base plate of the spray gun sleeve (2). The end of the wing bolt (14) is connected to the bottom of the pad (13) for adjusting the height of the pad (13).

3. The tunnel face marking device according to claim 2, characterized in that, The support rod (1) is provided with a fastening knob (11) at the top, and the scale (12) is fixedly connected to the top of the support rod (1) through the fastening knob (11).

4. The tunnel face marking device according to claim 3, characterized in that, The pressure plate (6) is provided with a pressing ball (7), which abuts against the nozzle at the top of the paint can (3).

5. A tunneling face marking device according to claim 4, characterized in that, The support rod (1) is provided with multiple fixing rings (10), and the pull rope (9) is threaded through the multiple fixing rings (10).

6. The tunnel face marking device according to claim 5, characterized in that, The pressure plate (6) is provided with a pull ring (8) at the end, and a pull rope (9) is connected to the pull ring (8). The pull rope (9) is provided with a pull ring (8) at the bottom end.

7. A tunneling face marking device according to claim 6, characterized in that, The inner wall of the spray sleeve (2) is provided with polyurethane sponge (4).

8. A tunnel face marking device according to claim 7, characterized in that, The support rod (1) is a telescopic rod.

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