Tunnel secondary lining construction joint cutting depth control and alarm device

Abstract

The utility model provides a tunnel secondary lining construction joint cutting depth control and alarm device, belongs to the technical field of tunnel construction, and aims to solve the problems that in the prior art, the cutting depth of a secondary lining construction joint can only be judged according to the experience of an operator, the depths are not uniform, and the cutting quality is poor. The device comprises a guide rail and a cutting device, the cutting device moves along the guide rail, and the device further comprises a positioning mechanism used for controlling the cutting depth; the contact sensing mechanism is used for detecting the contact between the positioning mechanism and the surface of the secondary lining and sending out a contact signal; the signal processing mechanism is used for transmitting and processing the contact signal; and the alarm is used for sending out an alarm signal to play a warning role. The problems that secondary lining joint cutting is operated according to experience of workers, the depth is difficult to control, and the depth is not uniform are solved, and the construction quality and efficiency of secondary lining joint cutting can be greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and particularly relates to a device for controlling the cutting depth and alarming of the construction joint of the secondary lining of a tunnel. Background Technique

[0002] In recent years, with the large-scale construction of high-speed railways in China, the number of high-speed railway tunnels has increased significantly. The secondary lining of the tunnel uses a secondary lining trolley as a formwork and is poured longitudinally along the tunnel one by one. Therefore, there is a construction joint in each slab of secondary lining concrete. The flatness of the concrete at the construction joint is relatively poor, and there are risks such as partial concrete chipping. Since the running speed of high-speed railways is fast, if the concrete at the construction joint of the secondary lining falls off, it poses a major threat to the safe operation of high-speed railways; at the same time, due to the high construction standards of high-speed railway tunnels and high requirements for the quality of the secondary lining, the flatness of construction joints directly affects the appearance quality of the secondary lining concrete of the tunnel. After the construction of the secondary lining of the tunnel, a cutting machine is usually used to cut and grind the construction joint into a "V" shape or a "U" shape to remove floating slag and increase the aesthetics.

[0003] A Chinese patent with the patent number CN208305402U discloses a hydraulic tunnel cutting machine, which includes a hydraulic power station. The hydraulic power station is connected to a hydraulic cutting head through a hydraulic oil pipe. Hydraulic motors are respectively arranged at the joints of the hydraulic oil pipe and the hydraulic power station and the hydraulic cutting head. It also includes an arc-shaped guide rail, and the arc-shaped guide rail is arranged on the base of the hydraulic cutting head. The hydraulic power station is connected to a remote control box through a control cable.

[0004] In the above-mentioned prior art, the hydraulic cutting head can move along the guide rail. The control box of the cutting head is placed at a distance, and the movement of the cutting head and the start of the cutter head are controlled through the control cable. When cutting the joint, the operator starts the cutting head through the control box. The cutter head of the cutting machine rotates at a high speed, cutting the construction joint of the secondary lining into a "V" shape or a "U" shape. The operator manually controls the movement of the cutting head along the guide rail and the cutting depth through the operation box. However, since the operator cannot directly see the cutting depth and can only judge based on experience, the cutting depth of the construction joint cannot be unified, the cutting quality is poor, and the construction quality and efficiency of the secondary lining cutting are affected.

[0005] Therefore, it is extremely important to design a device for controlling the cutting depth and alarming of the construction joint of the secondary lining of a tunnel. Summary of the Invention

[0006] The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art and provide a device for controlling the cutting depth and alarming of the construction joint of the secondary lining of a tunnel.

[0007] The device controls the cutting depth by setting a positioning mechanism. When the positioning mechanism contacts the surface of the secondary lining, it will trigger the contact sensing mechanism, and at the same time, the contact signal should be able to be transmitted to the signal processing mechanism and then to the alarm, triggering the alarm to warn the operator that the cutting depth has been reached and the cutting can be stopped.

[0008] Based on the above technical idea, the technical solution adopted by the present utility model is as follows:

[0009] A device for controlling the cutting depth and alarming of the construction joint of the tunnel secondary lining, including a guide rail and a cutting device, the cutting device moves along the guide rail, and is characterized in that it further includes:

[0010] A positioning mechanism for controlling the cutting depth of the construction joint;

[0011] A contact sensing mechanism arranged on the positioning mechanism for detecting the contact between the positioning mechanism and the surface of the secondary lining and sending out a contact signal;

[0012] A signal processing mechanism for transmitting and processing the contact signal;

[0013] An alarm for sending out an alarm signal to play a warning role.

[0014] In the above technical solution, preferably, the positioning mechanism includes a positioning disk, the cutting device includes a cutting seam cutter disk, the positioning disk and the cutting seam cutter disk are coaxial and arranged at intervals, and the diameter of the positioning disk is smaller than the diameter of the cutting seam cutter disk.

[0015] For further limitation of the above technical solution, the positioning mechanism further includes a positioning disk shaft and a bracket, the positioning disk is connected to the bracket through the positioning disk shaft, and the bracket is connected to the cutting device.

[0016] For further limitation of the above technical solution, the contact sensing mechanism is arranged on the positioning disk.

[0017] For further limitation of the above technical solution, the signal processing mechanism includes a signal processor and a signal processing box, the signal processor is placed in the signal processing box, and the signal processing box is arranged on the bracket.

[0018] The beneficial effects of the present utility model:

[0019] The utility model solves the problems that the cutting of the secondary lining depends on the experience of workers, the depth control is difficult, and the depth is not uniform, and can greatly improve the construction quality and efficiency of the cutting of the secondary lining. By setting a positioning disk, the positioning disk is coaxially arranged with the cutting slot cutter disk, and the diameter of the positioning disk is smaller than that of the cutting slot cutter disk, and the radius difference between the two is the cutting depth. The contact sensor is fixed on the side surface of the positioning disk with screws. When the predetermined depth is reached, the positioning disk will contact the surface of the secondary lining, preventing the cutting cutter disk from further increasing the cutting depth. The contact sensor will send out a contact signal, and then transmit it to the signal processor through the signal transmission line. The signal processor will transmit the processed signal to the alarm. The alarm light on the alarm will light up, and the loudspeaker will emit an alarm sound to prompt the operator that the predetermined cutting depth has been reached. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 3 is a schematic diagram of the structure of the bracket of the present utility model;

[0024] Figure 4 is a schematic diagram of the comparison of the cutting process of the present utility model;

[0025] Figure 5 is a schematic diagram of the signal processing system of the present utility model;

[0026] Among them, 1, guide rail; 2, cutting machine; 201, cutting slot cutter disk; 202, rocker arm; 203, rocker arm shaft; 3, positioning disk; 301, positioning disk shaft; 302, bracket; 303, inner extension plate; 304, outer extension plate; 305, bolt hole; 306, signal transmission line hole; 4, inner surface line of secondary lining; 401, cutting seam depth line; 402, edge of cutting slot cutter disk; 403, rim of positioning disk; 5, signal processor; 501; contact signal transmission line; 502, signal processing box; 503, cover plate; 6, alarm signal transmission line; 601, alarm; 602, alarm light; 603, loudspeaker. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length direction", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features limited to "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The following refers to the attached Figures 1-5 to elaborate in detail on the complete technical solutions and embodiments of this application.

[0031] Embodiment

[0032] This embodiment provides a device for controlling the cutting depth and alarming of the construction joint of the secondary lining of a tunnel. As Figure 1 and 2 shown, it includes a guide rail 1 and a cutting device. The cutting device moves along the guide rail 1. It is characterized in that it further includes: a positioning mechanism for controlling the cutting depth; a contact sensing mechanism for detecting the contact between the positioning mechanism and the surface of the secondary lining and sending out a contact signal; a signal processing mechanism for transmitting and processing the contact signal; and an alarm for sending out an alarm signal to play a warning role.

[0033] The cutting device in this embodiment includes a slot cutting machine 2, a swing arm 202, and a slot cutting tool disc 201. For the specific structures of the guide rail 1 and the cutting device in this embodiment, reference can be made to the Chinese patent with the patent number CN208305402U and the name of Hydraulic Tunnel Cutting Machine, which will not be elaborated here.

[0034] The positioning mechanism includes a positioning disk 3. The cutting device includes a slitting cutter disk 201. The positioning disk 3 is coaxially arranged with the slitting cutter disk 201 but not connected, and the diameter of the positioning disk 3 is smaller than that of the slitting cutter disk 201, and the difference in their radii is the predetermined slitting depth. The positioning mechanism further includes a positioning disk shaft 301 and a bracket 302. The positioning disk 3 is connected to the bracket 302 through the positioning disk shaft 301, and the bracket 302 is connected to the cutting device.

[0035] As Figure 3 shown, the bracket 302 in this embodiment is a box with a hollow interior. The panels on the opposite sides of the box extend outward in the same direction. The panel on the side close to the swing arm 202 has a shorter extension length, which is the inner extension plate 303 in the figure. The panel on the side far from the swing arm 202 has a longer extension length, which is the outer extension plate 304 in the figure. A bolt hole 305 is provided on the inner extension plate 303. The housing of the swing arm 202 is connected to the bracket 302 by screws. A positioning disk shaft 301 is provided on the outer extension plate 304, and the positioning disk 3 is installed on the positioning disk shaft 301 and thus connected to the bracket 302. In this way, when the swing arm 202 rotates around the swing arm shaft 203, the swing arm 202 will drive the bracket 302, and the bracket 302 will drive the positioning disk 3 to rotate together. Since the slitting cutter disk 201 is also connected to the swing arm 202, the slitting cutter disk 201 will also be driven to rotate, so that the slitting cutter disk 201 and the positioning disk 3 always remain coaxially arranged.

[0036] The positioning disk shaft 301 and the slitting cutter disk shaft are coaxially arranged, but the two shafts are not connected. The positioning disk 3 and the slitting cutter disk 201 are coaxially arranged to more precisely control the slitting depth of the construction joint and ensure the uniformity of the slitting depth. The diameter of the positioning disk 3 is set smaller than that of the slitting cutter disk shaft, and the difference in their radii is the predetermined slitting depth. When the predetermined slitting depth is reached, the rim surface of the positioning disk 3 will contact the inner surface of the secondary lining to prevent the slitting cutter disk 201 from further increasing the slitting depth. Different slitting depths can also be controlled by changing the diameter of the positioning disk 3.

[0037] In this embodiment, the contact sensing device is a limit switch. Taking the Delixi Electric LXJMH-8112 type limit switch as an example, the limit switch is fixed to the side of the positioning disk with screws. The limit switch is in a normally closed state. When the surface of the secondary lining contacts the mechanical contact on the limit switch, the circuit is connected, and the signal is transmitted to the signal processor through the signal transmission line

[0038] After the signal processor, i.e., the main control chip, receives the switch signal, it controls the alarm lamp 602 on the alarm 601 to light up, and the loudspeaker 603 emits an alarm sound. At the same time, the cutting machine stops operating.

[0039] The signal processing mechanism includes a contact signal transmission line 501 and a signal processor 5. The contact signal transmission line 501 connects the signal processor 5 with the contact sensing mechanism. The signal processor 5 is placed in a signal processing box 502, and the signal processing box 502 is arranged on a bracket 302.

[0040] In this embodiment, the signal processing box 502 is the hollow box inside the bracket 302, and the signal processor 5 is placed in the box. This can save space and make full use of the space. At the same time, it is more convenient for the connection between the contact sensing mechanism and the signal processor 5. A cover plate 503 is also arranged on the top of the signal processing box 502. The cover plate 503 and the box body are rotationally connected through a hinge and can be opened and closed to protect the circuit components. The connection method between the cover plate 503 and the box body is not limited to rotational connection and can also be a pull-out type, etc. The contact signal transmission line 501 passes through the signal processing box 502 and is connected to the signal processor 5.

[0041] The alarm includes an alarm signal transmission line 6 and an alarm 601. The alarm signal transmission line 6 connects the signal processor 5 and the alarm 601. The alarm 601 is also provided with a loudspeaker 603 and an alarm lamp 602.

[0042] The contact sensor signal is transmitted to the signal processor 5 through the contact signal transmission line 501 for processing, and the alarm signal is transmitted to the alarm 601 through the alarm signal transmission line 6. The alarm lamp 602 on the alarm 601 lights up, and the loudspeaker 603 emits an alarm sound to prompt the operator that the predetermined cutting seam depth has been reached. The alarm 601 can be set on the operating platform for the operator to observe while operating conveniently.

[0043] When performing the second lining cutting seam at the construction site, first connect the hydraulic power station and the hydraulic motor of the cutting machine 2 with a hydraulic oil pipe. Quick connectors are provided at both ends of the hydraulic oil pipe and on the hydraulic motor of the hydraulic power station and the cutting machine 2, and the connection is fast. Connect the hydraulic power station and the remote control box with a control cable. Turn on the water and electricity, do a good job in safety protection, and start the cutting machine 2 through the control box. The cutting cutter head 201 starts to rotate at a high speed.

[0044] The operator controls the rocker arm 202 of the slitting machine 2 to rotate around the rocker arm shaft 203 to achieve slitting, and drives the depth positioning disc 3 fixed on the outer shell of the rocker arm 202 to rotate synchronously; when the slitting cutter disc 201 contacts the surface of the secondary lining, slitting starts. When the slitting depth is less than the predetermined value, the rim of the depth positioning disc 3 does not contact the surface of the secondary lining, and the alarm does not sound; when the slitting depth reaches the predetermined depth, the rim of the depth positioning disc 3 contacts the surface of the secondary lining, preventing the cutting cutter disc from further increasing the slitting depth; the limit switch is in a normally closed state. When the surface of the secondary lining contacts the mechanical contact on the limit switch, the circuit is connected, and the signal is transmitted to the signal processor through the signal transmission line. After receiving the switch signal, the signal processor, that is, the main control chip, controls the alarm light 602 on the alarm 601 to light up, and the loudspeaker 603 emits an alarm sound, indicating that the operator has reached the predetermined slitting depth.

[0045] It should be clear that the above detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

Claims

1. A tunnel secondary lining construction joint cutting depth control and alarm device, comprising a guide rail (1) and a cutting device, wherein the cutting device moves along the guide rail (1), characterized in that: Also included are: A positioning mechanism, the positioning mechanism is used to control the cutting depth of the construction joint; A contact sensor mechanism, which is arranged on the positioning mechanism and is used to detect the contact between the positioning mechanism and the surface of the second lining and send out a contact signal; A signal processing mechanism, the signal processing mechanism is used to transmit and process the contact signal; An alarm is used to send out an alarm signal to serve as a warning.

2. A tunnel secondary lining construction joint cutting depth control and alarm device according to claim 1, characterized in that: The positioning mechanism comprises a positioning disc (3), the cutting device comprises a slitting knife disc (201), the positioning disc (3) and the slitting knife disc (201) are coaxial and spaced apart, and the diameter of the positioning disc (3) is smaller than the diameter of the slitting knife disc (201).

3. A tunnel secondary lining construction joint cutting depth control and alarm device according to claim 2, characterized in that: The positioning mechanism further comprises a positioning disc shaft (301) and a bracket (302); the positioning disc (3) is connected to the bracket (302) via the positioning disc shaft (301); and the bracket (302) is connected to the cutting device.

4. A tunnel secondary lining construction joint cutting depth control and alarm device according to claim 2, characterized in that: The contact sensor mechanism is arranged on the positioning plate (3).

5. A tunnel secondary lining construction joint cutting depth control and alarm device according to claim 3, characterized in that: The signal processing mechanism comprises a signal processor (5) and a signal processing box (502), wherein the signal processor (5) is placed in the signal processing box (502), and the signal processing box (502) is arranged on a bracket (302).

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