Tunnel over-break and under-break integrated device
By designing an integrated tunnel ultra-under-excavation device including arc beams, racks, slide frames and adjustable measurement devices, the problem of ultra-under-excavation detection in tunnel construction is solved, fast and accurate inspection is achieved, and construction safety and quality are improved.
Patent Information
- Application Number
- CN202421710404.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-18
AI Technical Summary
During the tunnel construction process, due to factors such as improper construction technology and inadequate technical measures, the tunnel is over-excavated, which increases the construction cost and difficulty and is difficult to effectively detect.
Design an integrated tunnel ultra-under-excavation device, including a base plate, arc beam, rack, slip frame, motor, gear and adjustable measuring device. By driving the gear and slip frame, the measuring device is adjusted through the motor to adjust the horizontal and longitudinal positions of the measuring device, expand the measurement area, and conveniently and quickly detect whether there is ultra-under-excavation in the tunnel.
Through the use of this device, it can effectively detect whether there is excessive under-excavation in the tunnel, which improves the convenience and speed of detection, reduces construction costs and difficulty, and improves construction safety and quality.
Smart Images
Figure CN222938493U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel construction, in particular to an integrated device for tunnel overbreak and underbreak. Background Technique
[0002] Tunnel overbreak and underbreak means that during the tunnel construction process, taking the designed excavation contour line of the tunnel as the benchmark, the part of the actually excavated cross-section outside the benchmark line is called overbreak, that is, the tunnel excavation contour line is larger than the tunnel design contour line, and the part inside the benchmark line is called underbreak, that is, the tunnel excavation contour line is smaller than the tunnel design contour line. Tunnel overbreak and underbreak directly affect the construction safety, cost and quality of the tunnel, increasing the subsequent construction difficulty. Overbreak and underbreak are caused by factors such as improper construction technology and inadequate technical measures during the construction process. Overbreak will increase the construction cost of the secondary lining support, and underbreak will increase the process time and construction cost of continuous excavation. Therefore, in order to prevent overbreak and underbreak from occurring during tunnel construction, a device for detecting whether a tunnel is overbroken or underbroken is urgently needed during the construction process. Content of the Utility Model
[0003] The purpose of the utility model is to provide an integrated device for tunnel overbreak and underbreak to solve the problems put forward in the above background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solution: An integrated device for tunnel overbreak and underbreak, including a bottom plate, on the upper surface of the bottom plate are provided two arc-shaped beams, on the arc-shaped beams are provided racks, the arc-shaped beams are connected with a sliding frame, on one side of the sliding frame is installed a first motor, the output end of the first motor is connected with a gear, the gear is meshed and connected with the rack, the top of the sliding frame is fixedly connected with a top beam, and on the top beam is provided an adjustable measuring device.
[0005] Preferably, at the bottom of both sides of the bottom plate are each provided an installation bracket, and the installation bracket is used to install the bottom plate on a vehicle tool for movement.
[0006] Preferably, the rack is of an arc-shaped structure and the rack is located on the lower surface of the arc-shaped beam.
[0007] Preferably, on both side walls of the arc-shaped beam are opened limiting sliding grooves, and on the inner wall of the sliding frame are provided limiting convex columns, and the limiting convex columns are slidably inserted into the limiting sliding grooves.
[0008] Preferably, on the top beam is provided a sliding track, inside the sliding track is slidably provided a slider, in the middle of the slider is provided a threaded cylinder, at one end of the top beam is installed a second motor, the output end of the second motor is connected with a lead screw, and the lead screw penetrates through the slider and is in mating connection with the threaded cylinder.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] An integrated device for overbreak and underbreak in tunnels, when in use, first install this device on a tunnel mobile vehicle through an installation bracket. The measuring device is used to measure whether there is overbreak or underbreak in the tunnel. By controlling the first motor to start and drive the gear to rotate, the sliding frame drives the top beam to move on the arc beam, and the lateral position of the measuring device can be adjusted. By controlling the second motor to drive the lead screw to rotate, the slider moves in the top beam, and then the longitudinal position of the measuring device is adjusted, expanding the measuring area and making it more convenient and fast to measure the tunnel. Description of the Drawings
[0011] Figure 1 It is a schematic structural diagram of the device of the present utility model.
[0012] Figure 2 is Figure 1 the enlarged view of part A in
[0013] Figure 3 It is another perspective view of the structural diagram of the device of the present utility model.
[0014] In the figure: bottom plate 1, installation bracket 101, arc beam 2, rack 3, top beam 4, sliding frame 5, first motor 6, gear 7, slider 8, second motor 9, lead screw 10, measuring device 11. Detailed Embodiment
[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0016] Please refer to Figures 1 to 3, the present utility model provides a technical solution: an integrated device for tunnel overbreak and underbreak, which includes a bottom plate 1. At the bottom of both sides of the bottom plate 1, there is an installation bracket 101 each. The installation bracket 101 is used to install the bottom plate 1 on a vehicle tool for movement, facilitating the use of a tunnel vehicle to drive this device to move in the tunnel. On the upper surface of the bottom plate 1, there are two arc-shaped beams 2. The shape of the arc-shaped beam 2 is adapted to the shape of the measured tunnel top. On the arc-shaped beam 2, there is a rack 3. The rack 3 is of an arc structure and is located on the lower surface of the arc-shaped beam 2. The arc-shaped beam 2 is connected to a sliding frame 5. On the two side walls of the arc-shaped beam 2, there are limit sliding grooves opened. On the inner wall of the sliding frame 5, there are limit convex columns, and the limit convex columns slide and are embedded in the limit sliding grooves. On one side of the sliding frame 5, a first motor 6 is installed. The output end of the first motor 6 is connected to a gear 7, and the gear 7 is meshed and connected with the rack 3. At the top of the sliding frame 5, there is a top beam 4 fixedly connected. On the top beam 4, there is an adjustable measuring device 11. The measuring device 11 is a high-precision ranging device such as a laser rangefinder. By measuring the distance between the tunnel top surface and the ranging device, it is possible to calculate whether there is overbreak or underbreak. On the top beam 4, there is a sliding track, and a slider 8 is slidably arranged in the sliding track. In the middle of the slider 8, there is a threaded cylinder. At one end of the top beam 4, a second motor 9 is installed. The output end of the second motor 9 is connected to a lead screw 10, and the lead screw 10 passes through the slider 8 and is in cooperation with the threaded cylinder.
[0017] During actual use, first install this device on a tunnel moving vehicle through the installation bracket 101. The measuring device 11 is used to measure whether there is overbreak or underbreak in the tunnel. By controlling the first motor 6 to start and drive the gear 7 to rotate, the sliding frame 5 drives the top beam 4 to move on the arc-shaped beam 2, and the lateral position of the measuring device 11 can be adjusted. By controlling the second motor 9 to drive the lead screw 10 to rotate, the slider 8 moves in the top beam 4, and then the longitudinal position of the measuring device 11 is adjusted, expanding the measuring area and making it more convenient and fast to measure the tunnel.
[0018] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A tunnel over-break and under-break integrated device, comprising a bottom plate (1), characterized in that: Two arc-shaped beams (2) are arranged on the upper surface of the bottom plate (1), a rack (3) is arranged on the arc-shaped beam (2), the arc-shaped beam (2) is connected to a sliding frame (5), a first motor (6) is installed on one side of the sliding frame (5), an output end of the first motor (6) is connected to a gear (7), the gear (7) and the rack (3) are meshingly connected, a top beam (4) is fixedly connected to the top of the sliding frame (5), and an adjustable measuring device (11) is arranged on the top beam (4).
2. The integrated tunnel over-break and under-break device according to claim 1, characterized in that: A mounting bracket (101) is provided at the bottom of each side of the base plate (1), and the mounting bracket (101) is used to mount the base plate (1) on a mobile vehicle tool.
3. The integrated tunnel over-break and under-break device according to claim 1, characterized in that: The rack (3) is an arc-shaped structure, and the rack (3) is located on the lower surface of the arc-shaped beam (2).
4. The integrated tunnel over-break and under-break device according to claim 1, characterized in that: The two side walls of the arc-shaped beam (2) are provided with limited sliding grooves, and the inner wall of the sliding frame (5) is provided with limited convex columns, which are slidably embedded in the limited sliding grooves.
5. The integrated tunnel over-break and under-break device according to claim 1, characterized in that: The top beam (4) is provided with a sliding track, a slider (8) is slidably provided in the sliding track, a threaded barrel is provided in the middle of the slider (8), a second motor (9) is installed at one end of the top beam (4), a screw rod (10) is connected to the output end of the second motor (9), and the screw rod (10) passes through the slider (8) and is cooperatively connected to the threaded barrel.