A kind of anti-retreating locking structure of clamp pressure type acoustic pipe connection

Abstract

The utility model provides a kind of anti-retreating locking structure of clamp pressure type sounding pipe connection, including mutually butting first pipe and second pipe, the inside of first pipe and second pipe is commonly provided with locking mechanism, locking mechanism includes three groups of mounting bracket, three groups of mounting bracket are fixed to the inner wall of first pipe at equal angle, and mounting shaft is worn and is installed on mounting bracket.The utility model cooperates through first pipe and second pipe, and the equal angle fixed three groups of mounting bracket of first pipe inner wall, mounting shaft worn and installed in mounting bracket, unlocking block slidably sleeved on mounting shaft, the upper locking block fixedly sleeved on mounting shaft, sliding shaft installed at equal angle with the inner wall of second pipe, spring and locking block sleeved on sliding shaft are used in cooperation, realize the anti-retreating locking of first pipe and second pipe and the unlocking function in later period, advantage is that three groups of structures distributed at equal angle can ensure that locking force is uniform, improve connection stability, simultaneously reserve unlocking passage to facilitate later maintenance, avoid the problem that pipe body cannot be disassembled after connection.

Description

Technical Field

[0001] This utility model belongs to the field of acoustic logging pipe technology, and more specifically, it relates to an anti-retrieval locking structure for clamp-type acoustic logging pipe connections. Background Technology

[0002] The clamp-type sonic logging tube is a key component of the ultrasonic testing system for cast-in-place piles. Serving as a dedicated channel for the probe to enter the pile, its core mechanism involves using a special hydraulic clamp to press the groove at the socket end of the tube to achieve connection. A built-in sealing ring forms a sealed structure. With advantages such as convenient installation, high tensile strength, and no site restrictions, it is widely used in pile foundation engineering for buildings, bridges, and tunnels. The stability of its connection and the durability of its seal directly affect the quality of ultrasonic wave transmission, which is a crucial prerequisite for ensuring the accuracy of pile foundation defect detection.

[0003] Existing clamp-type sonic logging pipes lack a dedicated anti-retraction locking mechanism, revealing numerous specific problems in enterprise production and actual construction. From the construction perspective, the existing structure relies solely on the passive locking state of "large at both ends and small in the middle" formed by the compression deformation of the pipe material, without any active anti-retraction design. During the hoisting of the reinforcing cage, the pipe body is prone to axial displacement due to vibration; during concrete pouring, the collision of the guide pipe during lifting and the impact of the vibrator can easily cause the joint to loosen and retract, requiring workers to make secondary adjustments and reinforcements, which also increases construction time and costs. From the perspective of service stability, if uneven settlement of the foundation occurs after the pile foundation is formed, the pipe body will be subjected to axial tension. The joint without an anti-retraction mechanism is very prone to gaps, causing mud and groundwater to seep into the pipe and block the channel. Enterprises need to invest additional manpower to clear the blockage, and may even have to use core drilling to remedy the situation because the channel blockage cannot be detected, which greatly increases the project cost.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a clamping anti-retraction locking structure for the connection of the sonic logging tube, in order to achieve a more practical purpose. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an anti-retraction locking structure for clamp-type acoustic tube connections, which is achieved by the following specific technical means: A clamp-type sonic logging pipe connection anti-retrieval locking structure includes a first pipe and a second pipe that are connected to each other. The first pipe and the second pipe are provided with a locking mechanism. The locking mechanism includes three sets of mounting brackets. The three sets of mounting brackets are fixed at equal angles to the inner wall of the first pipe. A mounting shaft is installed on the mounting bracket. An unlocking block is slidably fitted on the outer wall of the mounting shaft and a locking block is fixedly fitted on it. A sliding shaft is installed at equal angles on the inner wall of the second pipe. A spring and a locking block are fitted on the outer wall of the sliding shaft.

[0006] Preferably, a guide post is provided on the side wall of the insertion end of the second tube, and a guide groove is provided on the side wall of the first tube corresponding to the position of the guide post, and the guide post can slide along the axial direction of the guide groove.

[0007] Preferably, the outer wall of the second pipe is provided with a water-blocking protrusion to prevent impurities from entering the first pipe and the interior of the second pipe, and the water-blocking protrusion is tightly fitted to the outer wall of the second pipe.

[0008] Preferably, the outer walls of both the first and second tubes are provided with anti-slip textures, which are distributed in a ring along the outer wall of the mating sleeve.

[0009] Preferably, both the unlocking block and the locking block are conical and their bottom ends are positioned opposite each other. The bottom diameter of the unlocking block is larger than the bottom diameter of the locking block, and the side of the locking block facing the locking block has a driving slope.

[0010] Preferably, the mounting bracket is provided with an elastic buffer sheet on the side near the upper locking block. One end of the elastic buffer sheet is fixed to the side wall of the mounting bracket, and the other end is in contact with the outer wall of the upper locking block. When the first tube or the second tube deforms due to temperature changes, the elastic buffer sheet can undergo micro-elastic deformation with the deformation to compensate for the gap between the upper locking block and the locking block.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model uses a combination of a first tube and a second tube, with three sets of mounting brackets fixed at equal angles to the inner wall of the first tube, a mounting shaft passing through the mounting brackets, an unlocking block slidingly fitted onto the mounting shaft, and a locking block fixedly fitted onto the mounting shaft. These components work in conjunction with a sliding shaft installed at equal angles to the inner wall of the second tube, a spring fitted onto the sliding shaft, and a locking block. This combination enables the first and second tubes to be locked and unlocked later. The advantage is that the three sets of equally angled structures ensure uniform locking force, improving connection stability. Simultaneously, the reserved unlocking channel facilitates later maintenance and avoids the problem of the tubes being unable to be disassembled after connection. Furthermore, the guide post on the side wall of the second tube insertion end works in conjunction with the guide groove at the corresponding position on the side wall of the first tube to achieve axial guiding positioning when the two tubes are joined. This restricts relative rotation between the two tubes, preventing radial offset during joining and thus avoiding misalignment of the locking mechanism components, improving joining accuracy and efficiency, and reducing construction adjustment time.

[0012] 2. This utility model utilizes the water-blocking protrusions on the outer wall of the second pipe to achieve a tight fit with the outer wall of the second pipe, thereby preventing impurities from entering the interior of the first and second pipes. This has the advantage of preventing mud, sand, and rainwater from seeping into the pipes and corroding the locking mechanism (such as springs and locking blocks), extending the service life of the locking mechanism, and ensuring the long-term reliability of the anti-reverse locking function. The anti-slip texture on the outer wall of the first and second pipes, in conjunction with the pipe body itself, enhances the friction between the pipe body and tools such as pliers. This has the advantage of preventing tool slippage during clamping operations, ensuring accurate transmission of clamping pressure, assisting the locking mechanism in stably completing the locking action, and improving the safety and reliability of construction operations. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the disassembly state of this utility model. Figure 1 .

[0015] Figure 3 This is a schematic diagram of the disassembly state of this utility model. Figure 2 .

[0016] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. First tube; 2. Second tube; 3. Locking mechanism; 301. Mounting bracket; 302. Mounting shaft; 303. Unlocking block; 304. Locking block; 305. Locking block; 306. Sliding shaft; 307. Spring; 4. Anti-slip texture; 5. Water-blocking protrusion; 6. Guide post; 7. Guide groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example: As attached Figure 1 To be continued Figure 3 As shown: This utility model provides an anti-retrieval locking structure for a clamp-type acoustic logging tube connection, including a first tube 1 and a second tube 2 that are connected to each other. The first tube 1 and the second tube 2 are jointly provided with a locking mechanism 3. The locking mechanism 3 includes three sets of mounting brackets 301. The three sets of mounting brackets 301 are fixed at equal angles to the inner wall of the first tube 1. A mounting shaft 302 is installed on the mounting bracket 301. An unlocking block 303 is slidably fitted on the outer wall of the mounting shaft 302 and a locking block 304 is fixedly fitted on it. A sliding shaft 306 is installed at equal angles on the inner wall of the second tube 2. A spring 307 and a locking block 305 are fitted on the outer wall of the sliding shaft 306.

[0019] The second tube 2 has a guide post 6 on its insertion end sidewall, and the first tube 1 has a guide groove 7 on its sidewall corresponding to the guide post 6. The guide post 6 can slide axially along the guide groove 7. By using the guide post 6 on the insertion end sidewall of the second tube 2 in conjunction with the guide groove 7 on the sidewall of the first tube 1, the axial guiding and positioning effect is achieved when the two tubes are connected. The advantage is that it can directly restrict the relative rotation of the first tube 1 and the second tube 2, avoid the misalignment of the components of the locking mechanism 3 due to radial offset during the connection process, thereby improving the accuracy of the connection between the two tubes, reducing the adjustment time during construction, and improving the connection efficiency.

[0020] The outer wall of the second pipe 2 is provided with a water-blocking protrusion 5 to prevent impurities from entering the first pipe 1 and the interior of the second pipe 2. The water-blocking protrusion 5 fits tightly against the outer wall of the second pipe 2. Through the close fit between the water-blocking protrusion 5 and the outer wall of the second pipe 2, the effect of preventing impurities such as mud, sand and rainwater from entering the interior of the first pipe 1 and the second pipe 2 is achieved. Its advantage is that it can effectively protect the locking mechanism 3 inside the pipe, such as the mounting shaft 302, spring 307, locking block 305, and other components, from being corroded by impurities, extend the service life of the locking mechanism 3, and ensure the long-term stable and reliable anti-reverse locking function.

[0021] The outer walls of both the first pipe 1 and the second pipe 2 are provided with anti-slip textures 4. The anti-slip textures 4 are distributed in a ring along the outer wall of the connecting sleeve. The anti-slip textures 4 on the outer wall of the first pipe 1 and the anti-slip textures 4 on the outer wall of the second pipe 2 are used in conjunction with the corresponding pipe bodies to enhance the friction between the pipe body and the clamps and other construction tools. The advantage is that when clamping the sonic logging pipe, it can prevent the tool from slipping on the pipe body, ensure that the clamping pressure is accurately transmitted to the locking mechanism 3, assist the locking mechanism 3 in stably completing the locking action, and improve the safety and reliability of the construction operation.

[0022] Both the unlocking block 303 and the locking block 304 are conical and their bottom ends are positioned opposite each other. The bottom diameter of the unlocking block 303 is larger than that of the locking block 304. The locking block 305 has a driving ramp on the side facing the locking block 304. By using the unlocking block 303 and the locking block 304, which are conical and have a bottom diameter larger than that of the locking block 304, in conjunction with the driving ramp on the side of the locking block 305 facing the locking block 304, the locking mechanism 3 can smoothly complete the locking and unlocking actions. The advantage is that when locking, the driving ramp of the locking block 305 can smoothly contact the conical surface of the locking block 304, reducing the resistance between them and ensuring that the locking block 305 quickly engages with the locking block 304. When unlocking, the larger bottom end of the unlocking block 303 can push the locking block 304 to rotate around the mounting shaft 302 with less effort, reducing the unlocking operation force and improving ease of use.

[0023] Among them, the mounting bracket 301 is provided with an elastic buffer sheet on the side near the upper locking block 304. One end of the elastic buffer sheet is fixed to the side wall of the mounting bracket 301, and the other end is in contact with the outer wall of the upper locking block 304. When the first tube 1 or the second tube 2 deforms due to temperature changes, the elastic buffer sheet can undergo micro-elastic deformation with the deformation to compensate for the gap between the upper locking block 304 and the locking block 305. By using the elastic buffer sheet on the side of the mounting bracket 301 near the upper locking block 304 in contact with the outer wall of the upper locking block 304, the gap between the upper locking block 304 and the locking block 305 caused by the deformation of the first tube 1 or the second tube 2 due to temperature changes is compensated. The advantage is that it can avoid the problem of the upper locking block 304 and the locking block 305 not fitting tightly and the anti-retraction effect being reduced due to temperature difference deformation, and ensure that the locking mechanism 3 can maintain stable anti-retraction locking performance under different temperature conditions.

[0024] The working principle of this embodiment is as follows: First, the insertion end of the second tube 2 is connected to the first tube 1. At this time, the guide post 6 of the second tube 2 slides axially along the guide groove 7 of the first tube 1, quickly achieving precise positioning of the two tubes and restricting relative rotation. During the connection process, the spring 307 on the sliding shaft 306 on the inner wall of the second tube 2 gradually accumulates force due to the contact between the locking block 305 and the upper locking block 304 inside the first tube 1. After the two tubes are connected in place, the spring 307 releases its elastic force to push the locking block 305 to move along the sliding shaft 306. The driving inclined surface of the locking block 305 smoothly fits the conical surface of the upper locking block 304, which is fixedly mounted on the mounting shaft 302 and mounted on the mounting bracket 301 on the inner wall of the first tube 1. Combined with the three sets of equally angled locking mechanism 3 components, the locking block 305... 05 engages stably with the locking block 304, thereby achieving anti-reverse locking of the first tube 1 and the second tube 2. When unlocking is required for later maintenance, press the unlocking block 303, which is slidably fitted onto the mounting shaft 302. Its larger bottom end can push the locking block 304 to rotate around the mounting shaft 302, causing the locking block 304 to disengage from the locking block 305 and complete the unlocking operation. At the same time, the water-blocking protrusion 5 on the outer wall of the second tube 2 can prevent impurities from entering the tube and protect the locking mechanism 3. The anti-slip texture 4 on the outer walls of the first tube 1 and the second tube 2 facilitates stable clamping of the tool during clamping. The elastic buffer plate on the mounting bracket 301 can also compensate for the gap between the locking block 304 and the locking block 305 when the tube body is deformed due to temperature difference, ensuring the overall anti-reverse locking function is stable and reliable in all aspects.

[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A locking structure for preventing slippage in a clamp-type acoustic logging tube connection, characterized in that: The device includes a first tube (1) and a second tube (2) that are connected to each other. The first tube (1) and the second tube (2) are provided with a locking mechanism (3). The locking mechanism (3) includes three sets of mounting brackets (301). The three sets of mounting brackets (301) are fixed at equal angles to the inner wall of the first tube (1). The mounting brackets (301) are fitted with mounting shafts (302). The outer wall of the mounting shafts (302) is fitted with unlocking blocks (303) and locking blocks (304). The inner wall of the second tube (2) is fitted with sliding shafts (306) at equal angles. The outer wall of the sliding shafts (306) is fitted with springs (307) and locking blocks (305).

2. The anti-retraction locking structure for the clamp-type acoustic tube connection according to claim 1, characterized in that: The second tube (2) has a guide post (6) on the side wall of the insertion end, and the first tube (1) has a guide groove (7) on the side wall corresponding to the guide post (6). The guide post (6) can slide along the guide groove (7) axially.

3. The anti-retrieval locking structure for the clamp-type acoustic tube connection according to claim 1, characterized in that: The outer wall of the second pipe (2) is provided with a water-blocking protrusion (5) for preventing impurities from entering the first pipe (1) and the second pipe (2); the water-blocking protrusion (5) is closely fitted to the outer wall of the second pipe (2).

4. The anti-retrieval locking structure for the clamp-type acoustic tube connection according to claim 1, characterized in that: The outer walls of the first tube (1) and the second tube (2) are provided with anti-slip textures (4); the anti-slip textures (4) are distributed in a ring along the outer wall of the mating sleeve.

5. The anti-retrieval locking structure for the clamp-type acoustic tube connection according to claim 1, characterized in that: The unlocking block (303) and the locking block (304) are both conical and their bottom ends are opposite each other. The bottom diameter of the unlocking block (303) is larger than the bottom diameter of the locking block (304). The locking block (305) has a driving slope on the side facing the locking block (304).

6. The anti-retrieval locking structure for the clamp-type acoustic tube connection according to claim 1, characterized in that: The mounting bracket (301) is provided with an elastic buffer sheet on the side near the upper locking block (304). One end of the elastic buffer sheet is fixed to the side wall of the mounting bracket (301), and the other end is in contact with the outer wall of the upper locking block (304). When the first tube (1) or the second tube (2) deforms due to temperature change, the elastic buffer sheet can undergo micro-elastic deformation with the deformation to compensate for the gap between the upper locking block (304) and the locking block (305).

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