Over-break and under-break detection device for tunnel drilling and blasting construction

Abstract

The utility model relates to the technical field of tunnel construction auxiliary equipment, and particularly discloses a tunnel drilling and blasting construction over-break and under-break detection device which comprises a vehicle body, two sets of self-driven wheels arranged on the two sides of the lower portion of the vehicle body, a first hydraulic cylinder fixedly connected to the upper side of the vehicle body, and a top plate fixedly connected to the upper end of the first hydraulic cylinder. The upper side of the top plate clamps and fixes the detection template through a group of first clamping devices, the front end of the vehicle body is fixedly connected with a support, the support is provided with a second hydraulic cylinder, and the telescopic end of the second hydraulic cylinder is fixedly connected with a roadblock removing device. According to the tunnel drilling and blasting construction over-break and under-break detection device, a spot lamp irradiates a gap between a detection template and the top of a tunnel, over-break and under-break detection is achieved, protruding obstacles can be removed through rotation of a cleaning disc, it is guaranteed that a road surface is flat, it is guaranteed that self-driven wheels work on the flat road surface, a vehicle body cannot be inclined, and the service life of the vehicle body is prolonged. And the detection accuracy of over-break and under-break is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction auxiliary equipment, in particular to an over-excavation and under-excavation detection device for tunnel drilling and blasting construction. Background Art

[0002] Drilling and blasting is a method of blasting and crushing rock or soil, commonly used in construction, mining, and tunneling. Drilling and blasting is primarily carried out through the following steps: 1. Conduct a geological survey to understand the structure, lithology, and groundwater conditions; 2. Based on the survey results, design a blasting plan suitable for the specific project; 3. Arrange drilling holes in the area to be blasted according to the design requirements; 4. Use appropriate drilling tools and drill bits to perform the drilling operation, controlling the diameter, depth, and angle of the holes to ensure accuracy and stability; 5. Load the blasting agent into the borehole, typically using a detonating cord to fill the hole to the bottom. 6. Trigger the gunpowder in the detonating cord, detonating the blasting agent in the borehole. The shock wave generated by the blasting shatters the rock or soil; 7. After the blasting, clean up the rock and other debris, and then proceed with the initial excavation of the tunnel. After the initial excavation of the tunnel is completed, the over-excavation and under-excavation of the inner wall of the tunnel need to be inspected to see whether it meets the actual construction requirements. If there is any over-excavation or under-excavation that does not meet the standards, it will affect the subsequent lining.

[0003] In the prior art, when detecting the over-break or under-break of the inner wall of a tunnel, a template matching the tunnel is prefabricated, installed on a mobile vehicle, and then the template is lifted so that it contacts the tunnel top. The light transmittance at the template on the top of the tunnel is checked from one side of the tunnel to determine the over-break or under-break. However, since the bottom road in the tunnel is not particularly flat at this time, the mobile vehicle may press against raised obstacles during the forward movement, which may easily cause the vehicle body to tilt. After the template is lifted, there will be errors in the fit between the template and the tunnel top, affecting the accuracy of the detection. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a tunnel drilling and blasting construction over-excavation and under-excavation detection device.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for detecting over-excavation and under-excavation in tunnel drilling and blasting construction comprises a vehicle body, two sets of self-driven wheels being mounted on both sides below the vehicle body, a first hydraulic cylinder being fixedly connected to a top plate at the upper side of the vehicle body, a detection template being clamped and fixed to the upper side of the top plate by a set of first clamping devices, a front end of the vehicle body being fixedly connected to a bracket, a second hydraulic cylinder being mounted on the bracket, and a telescopic end of the second hydraulic cylinder being fixedly connected to a roadblock removal device.

[0007] Preferably, the roadblock removal device includes a base plate, both sides of which are rotatably connected to rotating shafts, and the lower end of each rotating shaft is fixedly connected to a cleaning disk; and also includes a power component for driving the two rotating shafts to rotate.

[0008] Preferably, the power assembly includes a motor, which is mounted on a base plate and has a main shaft coaxially fixed to one of the rotating shafts. Both rotating shafts are provided with pulleys, which are connected via a belt transmission.

[0009] Preferably, the cleaning disc includes an assembly plate, the lower side of the assembly plate is fixedly connected to a knife ring, the lower end surface of the knife ring is fixedly connected to a plurality of first cutters, and the outer ring surface of the knife ring is fixedly connected to a plurality of second cutters.

[0010] Preferably, one side of the base plate is fixedly connected to a hanging plate, the lower end of the hanging plate is fixedly connected to a second clamping device, and the cleaning plate is clamped and fixed in the second clamping device.

[0011] Preferably, one side of the top plate is fixedly connected to a mounting beam, and a spotlight is mounted on the mounting beam.

[0012] Beneficial effects of the present invention: The utility model provides a device for detecting over-break and under-break in tunnel drilling and blasting construction, which uses spotlights to illuminate the gap between the detection template and the tunnel top. If the local over-break of the tunnel top is serious, then the light leakage in this part is particularly serious. If the local under-break of the tunnel top is serious, then except for this part, the light leakage in other parts is particularly serious, thereby realizing the detection of over-break and under-break. The raised obstacles can be removed by rotating the cleaning disk, ensuring the flatness of the road surface, ensuring that the self-propelled wheels work on a flat road surface, and will not cause the vehicle body to tilt, thereby ensuring the accuracy of the detection of over-break and under-break. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0014] Figure 1 This is a structural diagram of a tunnel drilling and blasting construction over-break and under-break detection device provided by an embodiment of the utility model;

[0015] Figure 2 This is a structural diagram of a roadblock removal device provided by an embodiment of the present utility model;

[0016] Figure 3 This is a structural diagram of a cleaning disc provided by an embodiment of the present utility model;

[0017] Figure 4 yes Figure 2 Another perspective of the picture.

[0018] Icons: 1-body; 2-first hydraulic cylinder; 3-top plate; 4-first clamping device; 5-fixed detection template; 6-mounting beam; 7-bracket; 8-roadblock removal device; 71-second hydraulic cylinder; 11-self-propelled wheel; 61-spotlight; 9-cleaning disc; 81-base plate; 82-rotating shaft; 83-motor; 84-pulley; 85-belt; 86-hanging plate; 87-second clamping device; 88-fixed cleaning plate; 91 assembly plate; 92-knife ring; 93-first cutter; 94-second cutter. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0021] Examples, such as Figure 1-4 As shown, a tunnel drilling and blasting construction over-excavation and under-excavation detection device of this embodiment includes a vehicle body 1, two sets of self-propelled wheels 11 are installed on both sides of the lower side of the vehicle body 1, the upper side of the vehicle body 1 is fixedly connected to a vertically arranged first hydraulic cylinder 2, the upper end of the first hydraulic cylinder 2 is fixedly connected to a top plate 3, and the upper side of the top plate 3 is clamped and fixed with a set of first clamping devices 4. The first clamping devices 4 and the detection template 5 are both existing technologies and are not described in detail here. One side of the top plate 3 is fixedly connected to a mounting beam 6, and a spotlight 61 is installed on the mounting beam 6. The installation position and installation condition of the spotlight 61 are determined according to the on-site conditions to ensure that the spotlight 61 just illuminates the top of the detection template 5. In addition, the detection template 5 can be made according to the specific tunnel design standards.

[0022] In this way, during use, the first hydraulic cylinder 2 lifts the top plate 3 upward, and the detection template 5 rises with the top plate 3 and contacts the tunnel top. The spotlight 61 illuminates the gap between the detection template 5 and the tunnel top. If the local over-excavation of the tunnel top is serious, then the light leakage in this part will be particularly serious. If the local under-excavation of the tunnel top is serious, then except for this part, the light leakage in other parts will be particularly serious, thereby realizing the detection of over-excavation and under-excavation.

[0023] In order to prevent the self-propelled wheels 11 from pressing against raised obstacles during forward movement, which could easily cause the vehicle body to tilt and affect the accuracy of over-break and under-break detection, a bracket 7 is fixedly connected to the front end of the vehicle body 1. A second hydraulic cylinder 71 is mounted on the bracket 7. The telescopic end of the second hydraulic cylinder 71 is fixedly connected to a roadblock removal device 8. The roadblock removal device 8 includes a base plate 81, which is fixed to the telescopic end of the second hydraulic cylinder 71. Both sides of the base plate 81 are rotatably connected to a rotating shaft 82. The lower end of each rotating shaft 82 is fixedly connected to a cleaning disk 9. The position of the cleaning disk 9 corresponds to the self-propelled wheels 11. The cleaning disk 9 includes an assembly plate 91. The lower side of the assembly plate 91 is fixedly connected to a knife ring 92. The lower end surface of the knife ring 92 is fixedly connected to a plurality of first cutters 93. The outer annular surface of the knife ring 92 is fixedly connected to a plurality of second cutters 94. The roadblock removal device 8 also includes a power assembly for driving two rotating shafts 82. The power assembly includes a motor 83 mounted on a base plate 81, with the main shaft of motor 83 coaxially fixed to one of the rotating shafts 82. Both rotating shafts 82 are equipped with pulleys 84, which are connected to each other via a belt 85. Motor 83 can simultaneously drive both rotating shafts, thereby rotating the two cleaning discs 9. The rotation of the cleaning discs 9 can remove raised obstacles, ensuring a smooth road surface and ensuring that the self-propelled wheel 11 operates on a flat surface without causing the vehicle body to tilt, thereby ensuring accurate detection of over-break and under-break. Furthermore, a hanging plate 86 is fixedly connected to one side of the base plate 81. The lower end of the hanging plate 86 is fixedly connected to a second clamping device 87, which clamps a cleaning plate 88 within the second clamping device 87. The cleaning plate 88 is in contact with the ground and is used to move the crushed stone from the cleaning discs 9 to the sides of the self-propelled wheel 11, preventing some of the stone from being retained during the cleaning process.

[0024] In short, the above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A tunnel drilling and blasting over-excavation and under-excavation detection device, comprising a vehicle body (1), two sets of self-propelled wheels (11) being installed on both sides of the lower side of the vehicle body (1), the upper side of the vehicle body (1) being fixedly connected to a first hydraulic cylinder (2), the upper end of the first hydraulic cylinder (2) being fixedly connected to a top plate (3), the upper side of the top plate (3) being clamped and fixed with a detection template (5) by a set of first clamping devices (4), characterized in that: The front end of the vehicle body (1) is fixedly connected to a bracket (7), a second hydraulic cylinder (71) is mounted on the bracket (7), and a telescopic end of the second hydraulic cylinder (71) is fixedly connected to a roadblock removal device (8).

2. The device for detecting over-excavation and under-excavation in tunnel drilling and blasting construction according to claim 1, characterized in that: The roadblock removal device (8) comprises a base plate (81), both sides of which are rotatably connected to rotating shafts (82), and the lower end of each rotating shaft (82) is fixedly connected to a cleaning disk (9); and further comprises a power assembly for driving the two rotating shafts (82) to rotate.

3. The device for detecting over-excavation and under-excavation in tunnel drilling and blasting construction according to claim 2, characterized in that: The power assembly includes a motor (83), the motor (83) is mounted on the base plate (81), and the main shaft of the motor (83) is coaxially fixed with one of the rotating shafts (82), and pulleys (84) are installed on the two rotating shafts (82), and the two pulleys (84) are connected by a belt (85).

4. The device for detecting over-break and under-break in tunnel drilling and blasting construction according to claim 2, characterized in that: The cleaning disc (9) comprises an assembly plate (91), the lower side of the assembly plate (91) is fixedly connected to a knife ring (92), the lower end surface of the knife ring (92) is fixedly connected to a plurality of first cutters (93), and the outer ring surface of the knife ring (92) is fixedly connected to a plurality of second cutters (94).

5. The device for detecting over-excavation and under-excavation in tunnel drilling and blasting construction according to claim 2, characterized in that: One side of the base plate (81) is fixedly connected to a hanging plate (86), the lower end of the hanging plate (86) is fixedly connected to a second clamping device (87), and a cleaning plate (88) is clamped and fixed in the second clamping device (87).

6. The device for detecting over-excavation and under-excavation in tunnel drilling and blasting construction according to claim 1, characterized in that: One side of the top plate (3) is fixedly connected to a mounting beam (6), and a spotlight (61) is mounted on the mounting beam (6).

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