A hole grouting ultrasonic detection device convenient to fix

Abstract

The utility model discloses a kind of hole grouting ultrasonic detection devices of being convenient for fixed, belong to grouting detection technical field, it includes detector main body, the second connecting rod outside is connected with support rod with symmetrical structure, connecting rod is rotatably connected between the support rod, the knock hammer is buckled with the fixed block outside, the fixed block top is slidably connected with the adjusting lock block used in cooperation with the knock hammer;The utility model solves the intensity deviation problem of traditional manual knocking by mechanical transmission structure, avoids the detection data fluctuation caused by fatigue, uneven force when artificial handheld knocking, the preliminary location of detecting head by the inside half-arc rubber block of limiting cylinder and the flexible fixing of extruding rod end rubber limiting block, both can ensure that detecting head closely adheres measured surface, also can avoid the problem of unstable adhesion degree when artificial handheld, while the standard use of coupling agent further reduces ultrasonic signal loss, from the precision of detection data guaranteeing from two aspects of knocking and detection.

Description

Technical Field

[0001] This utility model belongs to the field of grouting detection technology, specifically a grouting ultrasonic detection device for easily fixed ducts. Background Technology

[0002] In the construction of prestressed bridge structures, building beam and column ducts, and tunnel lining grouting, the density of the grouting directly determines the load-bearing capacity and durability of the engineering structure. If there are problems such as incomplete grouting, voids, or segregation in the ducts, it will lead to corrosion of prestressing tendons, uneven stress on the structure, and long-term use may easily cause safety hazards such as cracking and collapse. Therefore, accurate detection of the grouting quality is a key link in the post-construction acceptance and operation and maintenance phases.

[0003] In existing ultrasonic testing of grouting ducts, the testing equipment typically consists of three parts: the main body of the instrument, the ultrasonic probe, and the striking hammer. The testing process requires manual operation. The operator must hold the ultrasonic probe head with one hand and place it tightly against the test surface outside the channel. To ensure effective propagation of ultrasonic waves, a coupling agent must be applied between the probe head and the test surface. During the holding process, continuous pressure must be applied to ensure that the probe head fits tightly. With the other hand, a hammer is held and struck on the surface to be tested near the probe. The vibration generated by the strike excites the propagation of ultrasonic waves. At the same time, the striking force and frequency must be controlled so that the ultrasonic waves can stably penetrate the grouting structure.

[0004] The existing technology has the following shortcomings: On the one hand, when the probe is held manually, the contact force and angle are easily affected by hand shaking and fatigue, resulting in uneven distribution of coupling agent, unstable ultrasonic wave propagation path, fluctuation of detection signal, and affecting the accuracy of defect judgment; On the other hand, the striking force and frequency of the hammer are entirely dependent on manual control. The striking force varies between different operators or even between the same operator at different times. The excitation intensity of ultrasound is directly related to the vibration frequency. The force deviation will lead to large dispersion of the reflected signal parameters, making it impossible to accurately distinguish whether the signal abnormality is caused by grouting defects or operational errors, thus reducing the reliability of the detection data. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides an ultrasonic testing device for grouting in ducts that is easy to fix. It solves the problem that when the probe is manually held, the contact force and angle are easily affected by hand tremors and fatigue, resulting in uneven distribution of coupling agent, unstable ultrasonic wave propagation path, and fluctuating detection signal, which in turn affects the accuracy of defect judgment. At the same time, the striking force and frequency of the hammer are completely dependent on manual control, and there are differences in the striking force of different operators or the same operator at different times.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultrasonic testing device for easy fixing of grouting, comprising a testing instrument body, a support frame snapped to one side of the testing instrument body, a base slidably connected to the bottom of the support frame, a first connecting rod fixedly connected to the top of the support frame in a symmetrical structure, a motor disposed inside the first connecting rod, a gear coaxially fixedly connected to the output end of the motor, a second connecting rod fixedly connected to the inside of the support frame below the gear, a support rod symmetrically connected to the outside of the second connecting rod, a connecting rod rotatably connected between the support rods, a swing frame fixedly installed at both ends of the connecting rod, one end of the swing frame located in the gear tooth groove, a fixing block fixedly connected to the other end of the swing frame, a striking hammer snapped to the outside of the fixing block, and an adjusting locking block slidably connected to the top of the fixing block for use with the striking hammer; An electric telescopic rod is fixedly connected to the outside of the support frame. The output end of the electric telescopic rod is connected to a movable arm. The other end of the movable arm is provided with a limit cylinder, and a pressing rod is threaded onto the limit cylinder.

[0007] As a further embodiment of this utility model: a protective block is sleeved on the outside of the motor, the protective block is fixedly connected to the first connecting rod, a protective shell is snapped on one side of the protective block, the gear is located inside the protective shell, and a slot is opened at the bottom of the protective shell to cooperate with the gear and the swing frame.

[0008] As a further embodiment of this utility model: a tension spring is fixedly connected between the bottom of the fixing block and the second connecting rod, and a slot for use with the hammer is provided on one side of the fixing block.

[0009] As a further embodiment of this utility model: the adjusting lock block comprises a bidirectional threaded rod and a pressing block, and a rubber pad for use with the striking hammer is installed inside the pressing block.

[0010] As a further embodiment of this utility model: multiple sets of semi-arc-shaped rubber blocks are embedded and installed inside the limiting cylinder, and a semi-arc-shaped limiting block is fixedly connected to the end of the extrusion rod. The limiting block is made of rubber material.

[0011] As a further embodiment of this utility model: the bottom of the support frame is provided with protrusions in a symmetrical structure, and the base is provided with a sliding groove that cooperates with the protrusions.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The mechanical transmission structure solves the problem of force deviation in traditional manual striking. The motor drives the gear to rotate, and with the reciprocating swing of the swing frame and the return assistance of the tension spring, the striking hammer can always maintain a uniform speed and force, avoiding the fluctuation of test data caused by fatigue and uneven force when manually striking. 2. The probe head is initially limited by the semi-circular rubber block inside the limiting cylinder and flexibly fixed by the rubber limiting block at the end of the extrusion rod. This ensures that the probe head fits tightly against the surface being measured and avoids the problem of unstable fit when manually held. At the same time, the proper use of the coupling agent further reduces ultrasonic signal loss, ensuring the accuracy of the test data from both the impact and detection aspects. 3. The sliding engagement between the bottom protrusion of the support frame and the base groove allows for smooth overall movement. Combined with the flexible fine-tuning of the probe position via the electric telescopic rod, continuous multi-area testing can be achieved without repeated manual disassembly and adjustment of components, significantly simplifying the operation process and saving testing time. In terms of safety, the protective block on the outside of the motor and the snap-on protective shell form a double protection, which can not only isolate dust and grout debris from contaminating core components such as gears and motors, but also prevent operators from accidentally contacting the moving mechanical structure, avoiding the risk of accidental injury. At the same time, each component adopts a stable connection method such as snap-on and threaded connection, reducing the problem of work interruption caused by loose components during the testing process. Attached Figure Description

[0013] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model; Figure 2 This is a second-view schematic diagram of the overall structure of this utility model; Figure 3 This is a first-view schematic diagram of the cross-sectional structure of this utility model; Figure 4 This is a second-view schematic diagram of the cross-sectional structure of this utility model; Figure 5 For the present utility model Figure 4 A magnified view of a portion of point A in the middle.

[0014] In the diagram: 1. Main body of the detector; 2. Support frame; 3. Base; 4. First connecting rod; 5. Motor; 6. Gear; 7. Protective shell; 8. Second connecting rod; 9. Support rod; 10. Connecting rod; 11. Swing frame; 12. Fixing block; 13. Adjusting lock block; 14. Striking hammer; 15. Tension spring; 16. Electric telescopic rod; 17. Movable arm; 18. Limiting cylinder; 19. Extrusion rod; 20. Protective block. Detailed Implementation

[0015] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0016] like Figures 1-5 As shown, this utility model provides a technical solution: An easily fixed ultrasonic testing device for grouting includes a main body 1, a support frame 2 snapped to one side of the main body 1, a base 3 slidably connected to the bottom of the support frame 2, symmetrical protrusions on the bottom of the support frame 2, and a groove for cooperating with the protrusions in the base 3. Specifically, when performing ultrasonic testing of grouting, the device is first assembled and prepared. The main body 1 is then connected and fixed to the support frame 2 via the snap-fit ​​structure to ensure a stable connection. Subsequently, the sliding fit between the bottom of the support frame 2 and the base 3 is adjusted according to the position requirements of the testing area, so that the entire testing device is stably placed at the appropriate starting position for testing.

[0017] The support frame 2 is symmetrically connected to the top of a first connecting rod 4. A motor 5 is installed inside the first connecting rod 4. A gear 6 is coaxially fixedly connected to the output end of the motor 5. A second connecting rod 8 is fixedly connected to the inside of the support frame 2 below the gear 6. A support rod 9 is symmetrically connected to the outside of the second connecting rod 8. A connecting rod 10 is rotatably connected between the support rods 9. A swing frame 11 is fixedly installed at both ends of the connecting rod 10. The crossbar at one end of the swing frame 11 is located in the tooth groove of the gear 6. A fixing block 12 is fixedly connected to the other end of the swing frame 11. A hammer 14 is snapped to the outside of the fixing block 12. An adjusting lock block 13 that works with the hammer 14 is slidably connected to the top of the fixing block 12. The adjusting lock block 13 consists of a bidirectional threaded rod and a pressing block. A rubber pad that works with the hammer 14 is installed inside the pressing block. Specifically, when installing the hammer 14, after it is inserted into the slot of the fixing block 12, rotate the bidirectional threaded rod of the adjusting locking block 13 to drive the two pressing blocks on both sides to move closer to each other, so that the rubber pad inside the pressing block is tightly attached to the surface of the hammer 14, thereby achieving a stable lock on the hammer 14.

[0018] An electric telescopic rod 16 is fixedly connected to the outside of the support frame 2. A movable arm 17 is connected to the output end of the electric telescopic rod 16. A limit cylinder 18 is provided at the other end of the movable arm 17. A pressing rod 19 is threadedly connected to the limit cylinder 18. Multiple sets of semi-circular rubber blocks are embedded and installed inside the limiting cylinder 18, and a semi-circular limiting block is fixedly connected to the end of the extrusion rod 19. The limiting block is made of rubber material. Next, the probe and coupling agent are processed. First, the coupling agent is evenly applied to the probe of the grouting ultrasonic testing. Then, the probe with the coupling agent applied is inserted into the limiting cylinder 18 at the end of the movable arm 17. By rotating the extrusion rod 19 on the limiting cylinder 18, the probe is squeezed and fixed by the threaded engagement between the extrusion rod 19 and the limiting cylinder 18, ensuring that the probe is stable in position and can fit tightly against the surface being tested during the testing process, without the need for manual handling.

[0019] After that, the hammer 14 is installed and connected to the outside of the fixing block 12 by a snap-fit ​​structure. At the same time, the adjusting lock block 13 on the top of the fixing block 12 is slid to make the adjusting lock block 13 cooperate with the hammer 14, so as to further ensure that the hammer 14 is installed firmly and in a precise position.

[0020] After all preparations are completed, the device is started for testing. First, the electric telescopic rod 16 on the outside of the support frame 2 is started. The output end of the electric telescopic rod 16 pushes the movable arm 17 to move, causing the limiting cylinder 18 and the internally fixed probe head to be adjusted to a position that precisely fits the surface to be measured. Then, the motor 5 on the inside of the first connecting rod 4 is started. The output end of the motor 5 drives the coaxially fixed gear 6 to rotate. Since one end of the swing frame 11 is located in the tooth groove of the gear 6, when the gear 6 rotates, it will drive the swing frame 11 to swing back and forth around the connecting rod 10 as the axis. The connecting rod 10 is supported by the support frame 16. The strut 9 is rotatably connected to the outside of the second link 8, which is fixed inside the support frame 2 and located below the gear 6, providing stable support for the swing frame 11 to swing. The fixed block 12 at the other end of the swing frame 11 drives the hammer 14 to swing back and forth synchronously, realizing automatic hammering of the grouting surface to be tested. During this process, if different areas need to be tested, the sliding fit between the support frame 2 and the base 3 can be adjusted to drive the entire testing device to move smoothly, so that the probe and the hammer 14 can be transferred synchronously to the new testing area to continue the testing operation.

[0021] This structure addresses the drawbacks of manual operation. Traditional testing requires a person to hold the probe head close to the surface being tested with one hand and strike it with the hammer 14 with the other. This is not only cumbersome but also prone to instability in probe head contact due to hand fatigue. Furthermore, there are significant deviations in manually controlling the striking force, affecting the accuracy of the test data. In contrast, this device uses a snap-fit ​​connection to fix the hammer 14 to the fixing block 12. Combined with the mechanical transmission structure of the gear 6 and the swing frame 11, it ensures that the force and frequency of each strike by the hammer 14 are completely consistent. At the same time, the limiting cylinder 18 and the squeezing rod 19 fix the probe head, avoiding the contact problem caused by manual handling, and greatly improving the reliability of the test data.

[0022] It can also improve the ease of operation and detection efficiency. The device can move the entire detection device smoothly through the sliding cooperation between the support frame 2 and the base 3. There is no need for manual repeated adjustment of the position of the probe head and the hammer 14, which simplifies the operation process of detection in different areas, reduces manual intervention steps, and saves detection time. At the same time, the electric telescopic rod 16 can flexibly adjust the position of the movable arm 17 and the probe head to ensure that the probe head can accurately fit the surface to be measured at different angles and positions, adapt to more complex detection scenarios, and further improve the applicability and efficiency of detection operations.

[0023] Finally, to enhance the stability and safety of the device, the main body 1 of the detector and the support frame 2 are connected by snap-fit, and the hammer 14 and the fixing block 12 are also connected by snap-fit. The connection of each component is stable, avoiding detection interruption or safety hazards caused by loose components during the detection process. Moreover, during the entire detection process, the operator does not need to directly contact the moving parts of the hammer 14 and the probe head, which reduces the risk of personnel injury caused by mechanical movement and improves the safety of the detection operation. In this embodiment, a protective block 20 is sleeved on the outside of the motor 5. The protective block 20 is fixedly connected to the first connecting rod 4. A protective shell 7 is snapped on one side of the protective block 20. The gear 6 is located inside the protective shell 7. A slot is opened at the bottom of the protective shell 7 to cooperate with the gear 6 and the swing frame 11. A tension spring 15 is fixedly connected between the bottom of the fixing block 12 and the second connecting rod 8. A slot is opened on one side of the fixing block 12 to cooperate with the hammer 14.

[0024] Specifically, when using this grouting ultrasonic testing device, after the installation of the motor 5 and the first connecting rod 4 is completed, the protective block 20 is fitted on the outside of the motor 5 and fixedly connected to the first connecting rod 4 to protect the motor 5. Then, the protective shell 7 is installed on one side of the protective block 20 through a snap-fit ​​structure, so that the gear 6 is completely covered inside the protective shell 7. The slot at the bottom of the protective shell 7 is just enough to leave space for the gear 6 and the swing frame 11 to cooperate and transmit, ensuring that the normal meshing movement of the two is not affected. When installing the hammer 14, it is aligned with the slot on one side of the fixed block 12 and snapped in to achieve initial positioning. Then, it is further fixed by adjusting the locking block 13. At the same time, the tension spring 15 between the bottom of the fixed block 12 and the second connecting rod 8 is naturally in the installation state, providing reset assistance for the swing of the swing frame 11. The cooperation between the protective block 20 and the protective shell 7 effectively shields the motor 5 and gear 6, preventing external dust, impurities, or debris generated during grouting operations from adhering to the motor 5 and gear 6 during the testing process, reducing interference with their normal operation, and preventing operators from accidentally contacting the moving gear 6, thus improving the safety of the device. The slotted design at the bottom of the protective shell 7 provides protection without affecting the transmission between the gear 6 and the swing frame 11, ensuring the continuity of the mechanical structure's operation. The slot on one side of the fixing block 12 allows for more precise positioning and a more stable connection when installing the hammer 14, preventing loosening or displacement during the hammering process. The tension spring 15 helps the swing frame 11 to quickly return to its original position after reciprocating swings. Combined with the rotation of the gear 6, it makes the striking action smoother and more stable, further ensuring the consistency of the striking force and improving the reliability of the test data.

[0025] When installing the probe, the probe coated with coupling agent is placed into the limiting cylinder 18. Multiple sets of semi-circular rubber blocks on the inner side of the limiting cylinder 18 first form a preliminary wrapping and limiting of the probe. Then, the extrusion rod 19 is rotated to move the semi-circular rubber limiting block at its end toward the probe and fit tightly, further fixing the probe. When adjusting the detection position, the support frame 2 is pushed so that the symmetrical protrusions at its bottom slide smoothly along the groove in the base 3, moving the entire device to the target detection area. By adjusting the bidirectional threaded rod of the locking block 13 in conjunction with the extrusion block with rubber pads, the extrusion force can be precisely adjusted by rotation to ensure that the striking hammer 14 is firmly fixed and does not loosen. At the same time, the rubber pads can be used to avoid hard damage to the striking hammer 14, while increasing friction to prevent slippage during striking. The semi-circular rubber block on the inner side of the limiting cylinder 18 cooperates with the rubber limiting block at the end of the extrusion rod 19 to accommodate probes of different sizes. Stable fixation is achieved through multi-directional flexible extrusion, which ensures that the probe is in close contact with the surface being measured, while avoiding damage to the probe due to rigid fixation. The protrusion at the bottom of the support frame 2 cooperates with the sliding groove of the base 3 to limit the movement trajectory of the device, making the entire device more stable when sliding and adjusting its position, reducing the impact of shaking on the detection accuracy, and improving the smoothness of the device's movement. This facilitates quick switching of detection areas and improves detection efficiency.

[0026] The working principle of this utility model is as follows: First, the main body 1 of the detector is connected and fixed to the support frame 2 by the buckle structure. The protrusion at the bottom of the support frame 2 slides and engages with the sliding groove inside the base 3. The position of the device is adjusted according to the requirements of the detection start position to make the whole stable. At the same time, the movable arm 17 is pushed by the electric telescopic rod 16, which drives the limiting cylinder 18 to move to the initial position that is suitable for the surface to be measured. Secondly, after applying coupling agent to the probe, it is placed into the limiting cylinder 18. The probe is initially wrapped and limited by multiple sets of semi-circular rubber blocks inside the limiting cylinder 18. Then, the extrusion rod 19 is rotated to apply flexible extrusion force to the probe through the semi-circular rubber limiting block at its end, ensuring that the probe is firmly fixed and closely fits the surface to be measured. At the same time, the hammer 14 is inserted into the slot on one side of the fixing block 12 to complete the initial positioning. The bidirectional threaded rod of the adjusting locking block 13 is rotated to drive the extrusion blocks with rubber pads on both sides to clamp the hammer 14, achieving double fixation of the hammer 14 and preventing the components from loosening during the test. It is worth mentioning that when the motor 5 inside the first connecting rod 4 is started, the motor 5 drives the coaxial fixed gear 6 to rotate. Since one end of the swing frame 11 is embedded in the tooth groove of the gear 6, the rotation of the gear 6 drives the swing frame 11 to swing back and forth around the connecting rod 10 as the axis. At the same time, the tension spring 15 at the bottom of the fixed block 12 assists the swing frame 11 to quickly reset, ensuring that the hammer 14 moves in a stable and uniform reciprocating motion with the swing frame 11, avoiding the deviation of the force of manual hammering. Finally, the protective block 20 on the outside of the motor 5 and the protective shell 7 installed by the snap fastener form a protective structure, which covers the gear 6. The transmission space between the gear 6 and the swing frame 11 is reserved only by the slot at the bottom of the protective shell 7. This prevents impurities from affecting the operation of the components and avoids personnel from contacting the moving parts. When different areas need to be detected, the support frame 2 is pushed so that the bottom protrusion slides smoothly along the groove of the base 3, which drives the entire device and the fixed probe and hammer 14 to move synchronously. Combined with the electric telescopic rod 16 to fine-tune the position of the probe, multi-area, precise continuous detection is achieved.

[0027] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An ultrasonic testing device for grouting in a hole that is easy to fix, comprising a testing instrument body (1), characterized in that: The main body (1) of the detector is snapped to one side with a support frame (2). The bottom of the support frame (2) is slidably connected to a base (3). The top of the support frame (2) is fixedly connected to a first connecting rod (4) in a symmetrical structure. A motor (5) is provided inside the first connecting rod (4). A gear (6) is coaxially fixedly connected to the output end of the motor (5). A second connecting rod (8) is fixedly connected to the inside of the support frame (2) below the gear (6). A support rod (9) is symmetrically connected to the outside of the second connecting rod (8). A connecting rod (10) is rotatably connected between the support rods (9). A swing frame (11) is fixedly installed at both ends of the connecting rod (10). One end of the swing frame (11) is located in the tooth groove of the gear (6). A fixing block (12) is fixedly connected to the other end of the swing frame (11). A hammer (14) is snapped to the outside of the fixing block (12). An adjusting lock block (13) is slidably connected to the top of the fixing block (12) to cooperate with the hammer (14). An electric telescopic rod (16) is fixedly connected to the outside of the support frame (2). An active arm (17) is connected to the output end of the electric telescopic rod (16). A limit cylinder (18) is provided at the other end of the active arm (17). A pressing rod (19) is threaded onto the limit cylinder (18).

2. The ultrasonic testing device for grouting in a hole, which is easy to fix, according to claim 1, is characterized in that: The motor (5) is fitted with a protective block (20) on the outside. The protective block (20) is fixedly connected to the first connecting rod (4). A protective shell (7) is snapped on one side of the protective block (20). The gear (6) is located inside the protective shell (7). The bottom of the protective shell (7) has a slot for use with the gear (6) and the swing frame (11).

3. The ultrasonic testing device for grouting in a hole, which is easy to fix, according to claim 1, is characterized in that: A tension spring (15) is fixedly connected between the bottom of the fixing block (12) and the second connecting rod (8), and a slot for use with the hammer (14) is provided on one side of the fixing block (12).

4. The ultrasonic testing device for grouting in a hole, which is easy to fix, according to claim 1, is characterized in that: The adjusting lock block (13) consists of a bidirectional threaded rod and a pressing block, and a rubber pad for use with the hammer (14) is installed inside the pressing block.

5. The ultrasonic testing device for grouting in a hole, which is easy to fix, according to claim 1, is characterized in that: Multiple sets of semi-arc-shaped rubber blocks are embedded and installed inside the limiting cylinder (18), and the end of the extrusion rod (19) is fixedly connected to a semi-arc-shaped limiting block, which is made of rubber material.

6. The ultrasonic testing device for grouting in a hole, which is easy to fix, according to claim 1, is characterized in that: The bottom of the support frame (2) is provided with protrusions in a symmetrical structure, and the base (3) is provided with a sliding groove for use with the protrusions.

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