Movable grouting fullness detection equipment

Abstract

The utility model discloses movable grouting fullness detection equipment, and relates to the technical field of grouting fullness detection. The device comprises a moving ring seat which sleeves the outer side of a grouting sleeve in an openable and closable manner, a plurality of moving mechanisms which are arranged on the inner side of the moving ring seat and are used for driving the moving ring seat to move in the axial direction of the sleeve, first self-locking structures arranged on the moving mechanisms, second self-locking structures arranged on the inner side of the moving ring seat and a sensor assembly; wherein the first self-locking structure has a retarding effect on the grouting sleeve when equipment is stopped or in an abnormal state so as to prevent the equipment from sliding or falling, the second self-locking structure is used for holding and locking the grouting sleeve when the movable ring seat reaches a target position, and the sensor assembly is arranged on the second self-locking structure and used for detecting the grouting sleeve. Continuous detection in the axial direction of the sleeve can be achieved, stable locking and safety protection are provided in the detection process, and therefore the detection efficiency and the detection precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of grout fullness detection technology, specifically a mobile grout fullness detection device. Background Technology

[0002] As an important form of modern building industrialization, the quality of the core node, the grouting connection of the steel sleeve, directly determines the safety performance of the overall structure. Currently, the fullness detection of the inside of the grouting sleeve mainly relies on ultrasonic non-destructive testing technology. Its basic principle is to use the obvious differences in the propagation speed, reflection characteristics, propagation time, and echo signal amplitude of ultrasonic waves when they propagate in different acoustic impedance media such as steel bars, grouting materials, and air. By analyzing the changes in these acoustic parameters, it is possible to determine whether there are ungrouted areas or voids inside the sleeve.

[0003] In actual engineering testing, existing ultrasonic testing equipment often requires manual scanning of the probe on the outer wall of a vertical sleeve. Since the sleeve surface is cylindrical and the construction site is mostly at height, manual operation is not only labor-intensive and inefficient, but also extremely difficult to ensure stable contact between the probe and the sleeve surface, resulting in large fluctuations in the acquired ultrasonic signal and poor detection accuracy. More importantly, the lack of an effective fixing device makes the testing equipment prone to sudden fall due to its own weight when climbing vertically or stopping midway, posing serious safety hazards and risks of equipment damage. Utility Model Content

[0004] Existing grout fullness testing equipment has problems such as difficulty in stable fixation on the vertical sleeve, easy slippage and fall, and unstable detection coupling.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A portable grout fullness testing device, comprising:

[0007] The movable ring seat can be opened and closed and fitted onto the outer periphery of the grouting sleeve, and can be moved up and down along the axial direction of the grouting sleeve.

[0008] Several moving mechanisms are arranged in a circular array on the inner side of the moving ring seat to drive the moving ring seat to move along the axial direction of the grouting sleeve;

[0009] A first self-locking structure is provided on the moving mechanism to block the grouting sleeve when the equipment stops or is in an abnormal state, so as to prevent the moving ring seat from slipping or falling.

[0010] The second self-locking structure is arranged in a circular array on the inner side of the movable ring seat, and is used to clamp and lock the grouting sleeve when the movable ring seat reaches the predetermined position.

[0011] A sensor assembly, disposed on the second self-locking structure, is used to detect the grouting sleeve;

[0012] The first self-locking structure includes a connecting rod and a self-locking block disposed at one end thereon. The connecting rod is rotatably connected to the mounting frame of the moving mechanism and is provided with an elastic element for driving the connecting rod to rotate toward the grouting sleeve, so that the self-locking block is pressed against the outer surface of the grouting sleeve.

[0013] Furthermore, the elastic element is a torsion spring, which is disposed at the rotatable connection between the connecting rod and the mounting bracket.

[0014] Furthermore, the first self-locking structure also includes a second telescopic device, which is disposed on the mounting frame. Its telescopic end is configured to abut against the connecting rod, and is used to drive the connecting rod to rotate against the force of the elastic element, so that the self-locking block moves away from the grouting sleeve.

[0015] Furthermore, during the vertical movement of the movable ring seat along the grouting sleeve, the second telescopic device remains extended, so that the self-locking block is disengaged from the grouting sleeve.

[0016] Furthermore, the moving mechanism includes a telescopic device one, a mounting frame, a traveling roller, and a servo motor two. The telescopic device one is fixed to the inner side of the moving ring seat, the mounting frame is connected to the telescopic end of the telescopic device one, the traveling roller is rotatably mounted on the mounting frame, and the servo motor two is drively connected to the traveling roller.

[0017] Furthermore, the outer periphery of the walking roller is provided with a friction strip.

[0018] Furthermore, the second self-locking structure includes several telescopic elements three and a locking plate. The telescopic elements three are arranged circumferentially inside the movable ring seat. The telescopic end of each telescopic element three is connected to a locking plate, and multiple locking plates form a ring structure.

[0019] Furthermore, a friction strip is provided on the inner side of the locking plate.

[0020] Furthermore, when the second self-locking structure is in the locked state, the telescopic device retracts to reduce the clamping force of the traveling roller on the grouting sleeve.

[0021] Furthermore, the sensor assembly includes several ultrasonic sensors, which are disposed on the locking plate and are mounted via a flexible mounting structure.

[0022] Compared with the prior art, the beneficial effects of this application are as follows: The movable grout fullness detection device provided by this application can move along the sleeve axis to realize multi-position continuous detection, thereby improving detection efficiency and coverage. It also prevents slippage or falling under abnormal conditions through the first self-locking structure, thereby improving the safety of use. At the same time, the second self-locking structure clamps and locks the sleeve during detection, thereby achieving stable positioning and improving detection accuracy. Furthermore, by separating the movement and locking functions, the device operates smoothly and the locking is reliable, resulting in better overall performance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the exploded structure of the movable ring seat of this utility model;

[0026] Figure 3 This is a schematic diagram of the inverted structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the moving mechanism and the first self-locking structure of this utility model;

[0028] Figure 5 This utility model Figure 4 A structural diagram from another perspective.

[0029] In the diagram: 1. Moving ring seat; 101. Clamp; 102. Connecting seat; 103. Gear set; 104. Servo motor one; 2. Grouting sleeve; 3. Moving mechanism; 301. Expansion joint one; 302. Mounting frame; 303. Walking roller; 304. Servo motor two; 4. First self-locking structure; 401. Connecting rod; 401a. Front end; 401b. Tail end; 402. Self-locking block; 403. Expansion joint two; 404. Torsion spring; 405. Hinge shaft; 5. Second self-locking structure; 501. Expansion joint three; 502. Locking plate; 6. Ultrasonic sensor; 7. Friction strip one; 8. Friction strip two; 9. Friction strip three. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] This application is described below with reference to the accompanying drawings and specific embodiments:

[0032] like Figure 1-5 As shown, this utility model provides a technical solution: a movable grout fullness testing device. The device is installed on the outside of the vertically embedded grouting sleeve 2 in prefabricated buildings. It utilizes the principle of the difference in the propagation characteristics of ultrasonic waves in different media to perform non-destructive testing on the grout fullness inside the sleeve. In addition, one of the core advantages of this device is that it solves the industry pain points of existing testing devices on vertical arc surfaces, such as "unstable placement, easy slippage, and inaccurate measurement", through the innovative double mechanical self-locking mechanism. It can also adapt to sleeves of different diameters and achieve rapid loading and unloading. The testing device mainly includes a movable ring seat 1, several movable mechanisms 3, a first self-locking structure 4, a second self-locking structure 5, and a sensor assembly.

[0033] like Figure 1 and Figure 2 As shown, the movable ring seat 1 serves as the load-bearing foundation of the entire equipment and adopts an openable and closable split ring structure design. Specifically, it includes a pair of semi-circular clamps 101. The ends of these two clamps 101 are movably connected to a stable connecting seat 102 via hinged rotating shafts, forming a hub structure similar to a clamp. A precision gear set 103 is configured inside the connecting seat 102. The rotating shaft ends of the two clamps 101 are each coaxially fixed with mutually meshing transmission gears. A servo motor 104 is fixed outside the connecting seat 102. When the sleeve needs to be inspected, the operator starts the servo motor 104, and its power output drives the rotating shaft of one clamp 101 to rotate. With the meshing transmission of the gear set 103, the other clamp 101 rotates synchronously and in the opposite direction, thereby achieving efficient opening of the two clamps 101 and fitting them onto the outside of the grouting sleeve 2. After fitting, the motor reverses, and the two clamps 101 close and tighten, completing the rapid installation of the equipment.

[0034] like Figure 1 , Figure 4 and Figure 5As shown, the moving mechanism 3 is responsible for driving the moving ring seat 1 to move up and down along the axial direction of the sleeve for scanning. Several moving mechanisms 3 are arranged in a circumferential array on the inner side of the moving ring seat 1. Each moving mechanism 3 includes a telescopic device 301 fixed radially to the inner wall of the moving ring seat 1. The end of its telescopic rod is fixedly connected to a U-shaped mounting bracket 302. A traveling roller 303 is mounted in the groove of the mounting bracket 302 through a wheel axle. In order to prevent slippage on the metal or rough surface of the sleeve, the outer circumferential surface of the traveling roller 303 is provided with There are friction strips 7 arranged in a circular array. A servo motor 304 is fixed on the side of the mounting frame 302. Its output shaft is connected to the wheel axle of the walking roller 303. When working, the telescopic device 301 first extends outward, pushing the mounting frame 302 closer and making the walking roller 303 press against the outer wall of the grouting sleeve 2 with a preset clamping force. Then, the servo motor 304 drives the walking roller 303 to rotate. Multiple moving mechanisms 3 work together to drive the entire moving ring seat 1 to climb up or move down smoothly along the sleeve.

[0035] It should be noted that when the second self-locking structure 5 is in the locked state, the telescopic device 301 retracts appropriately, so that the clamping force of the traveling roller 303 on the grouting sleeve 2 is reduced or in a non-primary stress state, thereby avoiding over-constraint interference between the traveling roller 303 and the locking plate 502.

[0036] like Figure 1 , Figure 4 and Figure 5 As shown, due to the weight of the equipment and the need to operate on a vertical sleeve at a high altitude, fall protection is crucial. This invention innovatively integrates a first self-locking structure 4 at the bottom of the mounting frame 302 of the aforementioned moving mechanism 3. This is a purely mechanical passive safety catch-all mechanism. This structure includes a connecting rod 401 bent in a zigzag shape. The middle part of the connecting rod 401 is hinged to the bottom of the mounting frame 302 via a hinge shaft 405, forming a structure similar to a seesaw or pendulum. The front end 401a of the connecting rod 401... A self-locking block 402 is fixed, and friction strips with a high coefficient of friction are embedded on the inner side of the self-locking block 402. An elastic element is provided at the connection position of the connecting rod 401 and the hinge shaft 405 of the mounting bracket 302. The elastic element is preferably a torsion spring 404. The torsion spring 404 is used to apply a continuous rotational torque to the connecting rod 401. Under the force of the torsion spring 404, the connecting rod 401 rotates around the hinge shaft 405, so that the self-locking block 402 is continuously pressed against the outer surface of the grouting sleeve 2, thereby forming a stable self-locking fit.

[0037] To release the self-locking mechanism when movement is required, a second telescopic device 403 is provided at the bottom of the mounting bracket 302. The end of the telescopic rod abuts against the tail end 401b of the connecting rod 401. The front end 401a and the tail end 401b of the connecting rod 401 are located on both sides of the hinge shaft 405. When lifting or lowering is required, the second telescopic device 403 extends outward and pushes the tail end 401b of the connecting rod 401, forcing the connecting rod 401 to overcome the force of the torsion spring 404 and rotate in the opposite direction around the hinge shaft, so that the self-locking block 402 is away from the surface of the grouting sleeve 2, eliminating movement interference.

[0038] Furthermore, during the lifting and lowering movement of the equipment along the grouting sleeve 2, the expansion joint 403 remains in an extended state so that the self-locking block 402 is always detached from the surface of the grouting sleeve 2, thereby avoiding interference with the normal movement of the traveling roller 303.

[0039] When a power outage or drive failure occurs, the expansion joint 403 loses its drive and retracts. The connecting rod 401 resets under the elastic restoring force of the torsion spring 404, causing the self-locking block 402 to be pressed back against the outer wall of the grouting sleeve 2, thereby achieving automatic restoration of the self-locking state.

[0040] Once the moving ring seat 1 reaches the designated detection height under the drive of the servo motor, it needs to stop extremely stably to ensure accurate acquisition of the ultrasonic detection signal. At this time, the second self-locking structure 5 is activated. This structure is an active positioning and locking mechanism, which includes several telescopic joints 501 fixed in a circumferential array on the inner side of the moving ring seat 1. The ends of the telescopic rods of these telescopic joints 501 are connected to an arc-shaped locking plate 502. The arc is adapted to the outer diameter of the grouting sleeve 2. Multiple locking plates 502 are spliced ​​together in the circumferential direction to form a ring structure. Friction strips 9 are also provided on the inner arc surface of the locking plate 502. After reaching the position, the traveling roller 303 stops rotating, and the telescopic joints 501 extend strongly in sync, pushing the arc-shaped locking plate 502 to close from all sides to the center, tightly hugging the outer wall of the grouting sleeve 2, and achieving absolute locking of the position.

[0041] In this locked state, the second self-locking structure 5 serves as the main load-bearing locking structure to stably maintain the spatial position of the moving ring seat 1; at the same time, the first self-locking structure 4 is only in an auxiliary fitting or non-load-bearing state to avoid force conflicts between the multiple locking structures.

[0042] Reference Figure 3The sensor assembly is the core component for performing the detection. It includes several ultrasonic sensors 6, which are arranged in an array along the arc-shaped extension direction of the locking plate 502 and fixedly mounted on the top surface of the locking plate 502. When the locking plate 502 of the second self-locking structure 5 is pressed tightly against the outer wall of the sleeve by the telescopic device 501, all the ultrasonic sensors 6 are also tightly attached to the surface of the sleeve with uniform and sufficient coupling pressure. During detection, the ultrasonic sensors 6 emit ultrasonic signals into the sleeve. Since there are steel bars, grout, and possible air cavities inside the sleeve, the acoustic impedance of these different media has significant differences. When the ultrasonic waves penetrate them, they will be reflected to different degrees. If there are ungrouted areas or air cavities inside, the ultrasonic waves will be strongly reflected when they encounter the air interface, resulting in a sharp attenuation of the amplitude of the received echo signal and a change in the propagation time. The processing system of the equipment can accurately determine whether there are defects inside the sleeve by analyzing the changes in these propagation times and echo amplitudes in real time.

[0043] Preferably, the ultrasonic sensor 6 is mounted on the locking plate 502 via an elastic mounting structure to provide a stable and uniform coupling pressure when the locking plate 502 presses against the grouting sleeve 2, thereby improving the stability and accuracy of the detection signal.

[0044] Working process: First, the operator controls servo motor 104 to open the moving ring seat 1 and place it on the outside of the exposed grouting sleeve 2, and then closes the clamp 101; next, the telescopic devices 301 of each moving mechanism 3 extend, so that the traveling rollers 303 press against the sleeve, and at the same time, servo motor 304 is started to prepare for lifting; during the lifting process, telescopic device 403 remains in the extended state, so that the first self-locking structure 4 is always in the released state, thereby avoiding obstruction to the movement process; when a power failure or abnormality occurs, telescopic device 403 loses its supporting force, and the first self-locking structure 4 automatically drives the self-locking block 402 to press the grouting sleeve 2 under the elastic action of torsion spring 404 to achieve anti-fall protection;

[0045] When the moving ring seat 1 reaches the position to be tested, the servo motor 2 304 stops, and the telescoping device 3 501 of the second self-locking structure 5 quickly extends, firmly locking the equipment onto the sleeve through the locking plate 502. At the same time, the telescoping device 1 301 retracts appropriately, causing the traveling roller 303 to reduce the clamping force or exit the main force-bearing state, thus allowing the second self-locking structure 5 to assume the main locking function. In addition, the first self-locking structure 4 maintains a close fit to the grouting sleeve 2 under the action of the torsion spring 404, forming a double anti-fall insurance. Finally, the ultrasonic sensor 6 attached to the locking plate 502 starts to work, collecting and analyzing ultrasonic data. After the single-point detection is completed, the second self-locking structure 5 slightly loosens, repeating the above lifting and locking steps until the scanning detection of the entire sleeve length is completed. This dual self-locking and complementary linkage mechanism greatly improves the reliability, safety and automation level of the grouting sleeve 2 fullness detection.

[0046] It should be noted that in some embodiments, the first self-locking structure 4 exists only as an auxiliary safety structure and does not participate in the main load-bearing, so as to avoid force conflict with the second self-locking structure 5.

[0047] In this embodiment, the telescopic joint 301, telescopic joint 403, and telescopic joint 501 can be actuators capable of linear reciprocating motion, preferably electric push rods. The telescopic joints coordinate their actions through preset control logic to form a complete working state switching mechanism. Specifically, the telescopic joints 301, 403, and 501 are electrically connected to the control unit and are linked for control according to their moving and locked states: when the equipment is moving axially along the grouting sleeve 2, the control unit outputs a first control command to keep the telescopic joint 301 extended to provide the pressing driving force for the traveling roller 303, while simultaneously keeping the telescopic joint 403 extended. By continuously pushing the connecting rod 401, the first self-locking structure 4 is released, thus avoiding obstruction of the movement process; at the same time, the telescopic joint 501 is retracted, causing the locking plate 502 to disengage from the grouting sleeve 2.

[0048] When the moving ring seat 1 reaches the target detection position, the control unit switches to the locking control mode and outputs the second control command, causing the telescopic device 3 501 to extend synchronously, driving each locking plate 502 to retract inward and hug the grouting sleeve 2. At the same time, the telescopic device 1 301 is controlled to retract to reduce the pressure of the traveling roller 303 on the grouting sleeve 2, so that the load is borne by the second self-locking structure 5. During this process, the telescopic device 2 403 can selectively retract appropriately, so that the first self-locking structure 4 is in an auxiliary fitting or pre-self-locking state.

[0049] Furthermore, in the event of a power outage, malfunction, or interruption of the control signal, the expansion joint 403 loses its driving and holding capability, and the connecting rod 401 automatically resets under the action of the torsion spring 404, thereby passively triggering the first self-locking structure 4 and pressing the grouting sleeve 2, forming a safety linkage response mechanism that does not require active control.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable grout fullness testing device, characterized in that, include: The movable ring seat (1) can be opened and closed and sleeved on the outer periphery of the grouting sleeve (2), and can be moved up and down along the axial direction of the grouting sleeve (2); Several moving mechanisms (3) are arranged in a circular array on the inner side of the moving ring seat (1) to drive the moving ring seat (1) to move axially along the grouting sleeve (2); The first self-locking structure (4) is provided on the moving mechanism (3) to block the grouting sleeve (2) when the equipment stops or is in an abnormal state, so as to prevent the moving ring seat (1) from slipping or falling. The second self-locking structure (5) is arranged in a circular array on the inner side of the movable ring seat (1) and is used to clamp and lock the grouting sleeve (2) when the movable ring seat (1) reaches the predetermined position. A sensor assembly, disposed on the second self-locking structure (5), is used to detect the grouting sleeve (2); The first self-locking structure (4) includes a connecting rod (401) and a self-locking block (402) disposed at one end thereon. The connecting rod (401) is rotatably connected to the mounting bracket (302) of the moving mechanism (3) and is provided with an elastic element for driving the connecting rod (401) to rotate toward the grouting sleeve (2) so that the self-locking block (402) is pressed against the outer surface of the grouting sleeve (2).

2. The portable grout fullness testing device according to claim 1, characterized in that: The elastic element is a torsion spring, which is located at the rotatable connection between the connecting rod (401) and the mounting bracket (302).

3. The portable grout fullness testing device according to claim 1 or 2, characterized in that: The first self-locking structure (4) further includes a second telescopic device (403), which is disposed on the mounting frame (302). Its telescopic end is configured to abut against the connecting rod (401) to drive the connecting rod (401) to rotate against the force of the elastic element so that the self-locking block (402) moves away from the grouting sleeve (2).

4. The portable grout fullness testing device according to claim 3, characterized in that: During the process of the moving ring seat (1) moving up and down along the grouting sleeve (2), the telescopic device (403) remains in an extended state, so that the self-locking block (402) is in a state of being disengaged from the grouting sleeve (2).

5. The portable grout fullness testing device according to claim 1, characterized in that: The moving mechanism (3) includes a telescopic device (301), a mounting frame (302), a walking roller (303), and a servo motor (304). The telescopic device (301) is fixed to the inner side of the moving ring seat (1). The mounting frame (302) is connected to the telescopic end of the telescopic device (301). The walking roller (303) is rotatably mounted on the mounting frame (302). The servo motor (304) is connected to the walking roller (303) in a transmission connection.

6. The portable grout fullness testing device according to claim 5, characterized in that: The outer periphery of the walking roller (303) is provided with friction strips (7).

7. The portable grout fullness testing device according to claim 1, characterized in that: The second self-locking structure (5) includes several telescopic threes (501) and a locking plate (502). The telescopic threes (501) are arranged in the circumferential direction on the inner side of the movable ring seat (1). The telescopic end of each telescopic three (501) is connected to a locking plate (502), and multiple locking plates (502) form a ring structure.

8. The portable grout fullness testing device according to claim 7, characterized in that: The locking plate (502) is provided with friction strip three (9) on its inner side.

9. The portable grout fullness testing device according to claim 5, characterized in that: When the second self-locking structure (5) is in the locked state, the telescoping device (301) retracts to reduce the clamping force of the walking roller (303) on the grouting sleeve (2).

10. The portable grout fullness testing device according to claim 7, characterized in that: The sensor assembly includes several ultrasonic sensors (6), which are disposed on the locking plate (502) and are mounted by a flexible mounting structure.

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