Detection device for cavern steel lining concrete void thickness

Abstract

The utility model provides a cavern steel lining concrete void thickness detection device, and relates to the technical field of concrete void thickness detection, the cavern steel lining concrete void thickness detection device comprises two oppositely arranged semi-ring sleeves and a sensor, one end of each semi-ring sleeve is slidably connected with a support seat, the opposite ends of the two semi-ring sleeves are both in threaded connection with a bidirectional screw rod, and the two ends of the two semi-ring sleeves are in threaded connection with the sensor. Wherein one of the two-way screw rods and the supporting seat are rotationally installed, sliding grooves are formed in the opposite sides of the two semi-ring sleeves, the two-way screw rods and the two semi-ring sleeves are arranged, the two semi-ring sleeves are driven to move on the supporting seat by rotating the two-way screw rods, and therefore the distance between the two semi-ring sleeves is increased, and the steel lining concrete of different sizes can be dealt with; and the application range of the device is enlarged.

Description

Technical Field

[0001] This utility model relates to the field of concrete void thickness detection technology, and in particular to a device for detecting the void thickness of steel-lined concrete in tunnels. Background Technology

[0002] Steel-lined concrete is a structural form that combines steel plates with concrete. It utilizes the advantages of both steel and concrete to improve the overall performance of the structure. However, during actual construction, voids may occur in the steel-lined concrete. These void defects can affect the integrity and stability of the structure. Therefore, it is necessary to conduct tests to evaluate the bonding between the steel lining and the concrete.

[0003] Therefore, a portable steel pipe concrete void detection device, publication number CN217846180U, requires the following steps before use: First, place the detector in a carrying case. Then, place the accessories, such as collars of different diameters, in an accessory storage bag. Close the case lid and lift the entire case using the handle in the portable mechanism. After transporting the detector to the designated location, open the case lid and select the appropriate collar from the accessory storage bag according to the diameter of the steel pipe. Then, secure the collar to the handle using a fixing nut. Finally, connect the handle end to the... Secure the wiring to the connector welded to the bottom of the detector surface. Then turn on the detector switch and remove the stylus from the mounting plate. Because the stylus is small and easily lost, the stylus storage mechanism makes it easy to store it. After setting the detection parameters using the stylus via the touchscreen, place the collar on the outer wall of the steel pipe. The ripple signal emitted by the detector is transmitted to the sensor via the connecting wire. The sensor then emits a ripple signal to the inside of the steel pipe, and the received return ripple signal can be displayed on the touchscreen.

[0004] When the equipment is used with steel-lined concrete of different radii, it is necessary to replace the unsuitable collar and install a collar that matches the aperture size for testing. This operation is quite troublesome, and in order to deal with steel-lined concrete of various sizes, it is necessary to prepare a variety of collars of different specifications, which increases the company's costs. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art, and to propose a device for detecting the thickness of the void in the steel-lined concrete of a tunnel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a detection device for the thickness of concrete voids in a tunnel steel lining, comprising two opposing semi-rings and a sensor. One end of each semi-ring is slidably connected to a support base, and both opposite ends of the two semi-rings are threaded with a bidirectional screw rod, one of which is rotatably mounted to the support base. Sliding grooves are provided on opposite sides of the two semi-rings. Several mounting seats for mounting the sensor are slidably connected to each semi-ring through the sliding grooves. Guide grooves perpendicular to the semi-rings are provided on opposite sides of each mounting seat. Square grooves communicating with the guide grooves are provided at both ends of the mounting seat facing the center of the semi-ring. A limiting rod is slidably inserted into the guide groove, and the limiting rod abuts against the inner wall of the semi-ring. A push rod fixedly mounted to the limiting rod slides within the square groove. A spring is fixed between the limiting rod and the guide groove.

[0007] Preferably, the two semi-ring sleeves are also slidably mounted on opposite ends of each other via grooves. The extended sleeves are also provided with grooves, and the extended sleeves are slidably connected to the mounting base via the grooves on the extended sleeves.

[0008] Preferably, a spring rod is fixed between the mounting base and the sensor.

[0009] Preferably, one side of the push rod extends outward through the side wall of the mounting base and fixes a limiting rod two, which is also used to abut against the inner side wall of the semi-ring sleeve.

[0010] Preferably, the other end of the support base is rotatably connected to a connecting rod, and one end of the connecting rod is hinged to a handle that is connected to the instrument body.

[0011] Preferably, a pin is fixedly connected to the hinge end of the connecting rod, the pin is rotatably mounted to the end of the handle, a worm gear is fixedly connected to the end of the pin, and a worm gear is meshed with the worm that is rotatably mounted to the handle.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting a bidirectional lead screw and two semi-ring sleeves, rotating the bidirectional lead screw drives the two semi-ring sleeves to move on the support base, thereby increasing the distance between the two semi-ring sleeves, thus enabling it to cope with steel-lined concrete of different sizes and increasing the applicability of the device.

[0014] 2. In this utility model, after the distance between the two semi-ring sleeves increases, the areas where they do not contact each other cannot be detected. However, by setting an extension plate and pinching the push rod, the first and second limit rods are driven to move, so that the mounting base is separated from the semi-ring sleeve and the mounting base is moved, so that the sensor is evenly distributed on the semi-ring sleeve and the extension sleeve, which can uniformly detect the steel-lined concrete and improve the detection accuracy of the device. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of the device for detecting the thickness of voids in the steel-lined concrete of a tunnel, as proposed in this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the connecting rod in this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the semi-ring sleeve in this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the spring rod in this utility model;

[0019] Figure 5 In this utility model Figure 4 A sectional view;

[0020] Figure 6 This is a three-dimensional structural diagram of the pin shaft in this utility model.

[0021] Legend: 1. Handle; 2. Connecting rod; 3. Worm gear; 4. Worm; 5. Support seat; 6. Semi-ring sleeve; 7. Double-acting screw; 8. Sensor; 9. Extension sleeve; 10. Mounting seat; 11. Push rod; 12. Limiting rod one; 13. Limiting rod two; 14. Spring rod; 15. Spring; 16. Pin; 17. Square groove; 18. Guide groove; 19. Slide groove. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] like Figure 1-6As shown, the detection device for the thickness of the concrete void in the steel lining of the tunnel includes two opposing semi-rings 6 and a sensor 8. One end of each semi-ring 6 is slidably connected to a support base 5. Both ends of the two semi-rings 6 are threadedly connected to a double-acting screw 7, one of which is rotatably mounted to the support base 5. The opposing sides of the two semi-rings 6 are provided with sliding grooves 19. Several mounting seats 10 for mounting the sensor 8 are slidably connected to the semi-rings 6 through the sliding grooves 19. The mounting seats 10 are provided with guide grooves 18 perpendicular to the semi-rings 6 on their opposing sides. The mounting seats 10 facing the center of the semi-rings 6 are provided with square grooves 17 at both ends that communicate with the guide grooves 18. A limiting rod 12 is slidably inserted into the guide groove 18. The limiting rod 12 is used to abut against the inner wall of the semi-ring 6. A push rod 11 fixedly mounted to the limiting rod 12 is slidably installed in the square groove 17. A spring 15 is fixed between the limiting rod 12 and the guide groove 18.

[0025] In this technical solution, by rotating the two bidirectional lead screws 7, the distance between the two semi-ring sleeves 6 is increased, making the aperture formed by the two semi-ring sleeves 6 larger. By pinching the push rods 11 on both sides of the sensor 8, the spring 15 is contracted, which drives the limiting rod 12 to move and insert into the guide groove 18, eliminating the contact between the limiting rod 12 and the semi-ring sleeves 6. This allows the mounting base 10 to slide inside the slide groove 19, thereby allowing the sensor 8 to slide along the slide groove 19.

[0026] like Figure 3 As shown, the two semi-ring sleeves 6 are also slidably mounted on the opposite ends of the two semi-ring sleeves 6 through the sliding groove 19. The sliding groove 19 is also provided on the extended sleeve 9. The extended sleeve 9 is slidably connected to the mounting base 10 through the sliding groove 19 located on the extended sleeve 9.

[0027] In this technical solution, when the distance between the two semi-ring sleeves 6 increases, the device is closed by moving the extension sleeve 9 out of the slide groove 19 and making the two adjacent extension sleeves 9 located on different semi-ring sleeves 6 come into contact, and the sensor 8 is slid onto the extension sleeve 9 so that the sensor 8 is evenly distributed.

[0028] like Figure 4 As shown, a spring rod 14 is fixed between the mounting base 10 and the sensor 8.

[0029] In this technical solution, when the extension sleeve 9 is pulled out and the sensors 8 are evenly distributed on the extension sleeve 9 and the semi-ring sleeve 6, the pattern formed by the cross-sections of several sensors 8 is an irregular pattern. When detecting circular steel-lined concrete, by setting the spring rod 14, all sensors 8 can be made to contact the steel-lined concrete.

[0030] like Figure 5 As shown, the push rod 11 extends outward from one side, penetrates the side wall of the mounting base 10, and is fixed with a limiting rod 2 13. The limiting rod 2 13 is also used to abut against the inner side wall of the semi-ring 6.

[0031] In this technical solution, by setting the limiting rod 13, the mounting base 10 is further fixed to the semi-ring sleeve 6 by contact, so that the position of the sensor 8 is not easy to move.

[0032] like Figure 1 and Figure 6 As shown, the other end of the support base 5 is rotatably connected to a connecting rod 2. One end of the connecting rod 2 is hinged to a handle 1 that is connected to the instrument body. The hinged end of the connecting rod 2 is fixedly connected to a pin 16. The pin 16 is rotatably installed with the end of the handle 1. The end of the pin 16 is fixedly connected to a worm gear 3. The worm gear 3 is meshed with a worm 4 that is rotatably installed with the handle 1.

[0033] In this technical solution, by setting up a worm gear 3 and a worm 4, the operator can hold the device at various angles, making it easier for personnel to operate.

[0034] Working principle: During detection, two semi-ring sleeves 6 are placed on the surface of the steel-lined concrete. The distance between the semi-ring sleeves 6 and the steel-lined concrete is adjusted by turning the double-acting screw 7, so that the sensor 8 contacts the steel-lined concrete and emits a detection wave. When encountering steel-lined concrete with a large radius, the distance between the two semi-ring sleeves 6 is increased by rotating the two double-acting screws 7. By pinching the push rods 11 on both sides of the sensor 8, the limiting rod 12 is moved to the depth of the guide groove 18, canceling the contact between the limiting rod 12 and the semi-ring sleeves 6. This allows the mounting base 10 to slide inside the slide groove 19, and then the sensor 8 slides along the slide groove 19.

[0035] The wiring diagrams of the instrument body and sensor 8 in this utility model are common knowledge in the field, and their working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the instrument body and sensor 8 will not be explained in detail.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A device for detecting the thickness of concrete voids in steel-lined tunnels, comprising two opposing semi-rings (6) and a sensor (8), characterized in that: One end of the semi-ring sleeve (6) is slidably connected to a support base (5), and the opposite ends of the two semi-ring sleeves (6) are threadedly connected to a double-acting screw (7), one of which is rotatably mounted to the support base (5). The opposite sides of the two semi-ring sleeves (6) are provided with sliding grooves (19), and the semi-ring sleeves (6) are evenly slidably connected to a number of mounting seats (10) for mounting sensors (8) through the sliding grooves (19). The mounting seats (10) are provided with guides on opposite sides that are perpendicular to the semi-ring sleeves (6). The mounting base (10) has square grooves (17) at both ends on the side facing the center of the semi-ring sleeve (6) that communicate with the guide groove (18). A limiting rod (12) is slidably inserted into the guide groove (18). The limiting rod (12) is used to abut against the inner side wall of the semi-ring sleeve (6). A push rod (11) is slidably installed in the square groove (17) and fixedly installed with the limiting rod (12). A spring (15) is fixed between the limiting rod (12) and the guide groove (18).

2. The device for detecting the thickness of concrete voids in steel-lined tunnels according to claim 1, characterized in that: The two semi-ring sleeves (6) are also slidably mounted with extension sleeves (9) through grooves (19) at their opposite ends. The extension sleeves (9) are also provided with grooves (19). The extension sleeves (9) are slidably connected to the mounting base (10) through the grooves (19) on the extension sleeves (9).

3. The device for detecting the thickness of concrete voids in steel-lined tunnels according to claim 1, characterized in that: A spring rod (14) is fixed between the mounting base (10) and the sensor (8).

4. The device for detecting the thickness of concrete voids in steel-lined tunnels according to claim 1, characterized in that: The push rod (11) extends outward through the side wall of the mounting base (10) and is fixed with a limiting rod (13). The limiting rod (13) is also used to abut against the inner side wall of the semi-ring (6).

5. The device for detecting the thickness of concrete voids in steel-lined tunnels according to claim 1, characterized in that: The other end of the support base (5) is rotatably connected to a connecting rod (2), and one end of the connecting rod (2) is hinged to a handle (1) that is connected to the instrument body.

6. The device for detecting the thickness of concrete voids in steel-lined tunnels according to claim 5, characterized in that: The hinge end of the connecting rod (2) is fixedly connected to a pin (16), the pin (16) is rotatably installed with the end of the handle (1), the end of the pin (16) is fixedly connected to a worm gear (3), and the worm gear (3) is meshed with a worm (4) rotatably installed with the handle (1).

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