Reinforcing steel bar adapter for strength detection
By designing a rebar conversion joint with an inner conical guide surface and circumferentially arranged clamping parts, the problem of poor adaptability of traditional testing devices to irregularly shaped rebars is solved, achieving efficient and stable rebar testing and connection.
Patent Information
- Application Number
- CN202422984336.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Traditional precast pile end reinforcement detection devices cannot flexibly adapt to diverse reinforcement types, resulting in reinforcement shaking and displacement during the detection process, low detection accuracy and efficiency, and unstable connections.
A rebar conversion joint for strength testing is designed, which adopts an inner conical guide surface and circumferentially arranged clamping parts, combined with threaded connection, to achieve precise guidance and tight fixation of rebars of different shapes and diameters.
It improves the versatility and accuracy of rebar testing, simplifies the testing process, enhances the stability and maintainability of connections, and ensures the reliability of test results and construction quality.
Smart Images
Figure CN223526117U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of detection accessories, specifically, and relates to a reinforcing steel bar conversion joint for strength detection. BACKGROUND
[0002] In the field of modern construction engineering, as a key component of the foundation bearing structure, the quality and strength of the end reinforcing steel bar of the prefabricated pile plays a decisive role in the overall building stability, and accurate and efficient reinforcing steel bar strength detection is crucial. However, the traditional connecting device for detecting the end reinforcing steel bar of the prefabricated pile has many limitations and cannot meet the current stringent construction requirements.
[0003] From the perspective of the diversity of reinforcing steel bars, in order to meet different mechanical properties and design requirements, a variety of reinforcing steel bar types are used, including round, square, and special-shaped reinforcing steel bars with concave-convex patterns. However, the design of the past detection connecting tooling is rigid, and it is mainly designed for conventional round reinforcing steel bars. When facing special-shaped reinforcing steel bars, there is a lack of flexible and stable clamping methods, and the reinforcing steel bar cannot be closely fitted to the unique profile, resulting in frequent shaking and displacement of the reinforcing steel bar during the detection preparation stage, unstable detection conditions, and greatly reduced detection preparation efficiency.
[0004] In terms of detection operation convenience and precision control, the problem is also prominent. The traditional connecting method often lacks delicate guide structures. When inserting the reinforcing steel bar into the connecting device, due to the differences in steel bar diameter and slight deviations in insertion angle, the reinforcing steel bar cannot be accurately guided into position, which can easily cause the connecting components to be out of balance and skewed, resulting in inaccurate clamping, fixation failure, and the need for a large amount of time for manual adjustment. This makes the initial position of the reinforcing steel bar inconsistent during each detection, and the reliability of the strength detection data obtained is questionable. SUMMARY
[0005] The utility model provides a reinforcing steel bar conversion joint for strength detection, which solves the poor connectivity problem of the prefabricated pile conversion joint in the related art.
[0006] The technical solution of the utility model is as follows:
[0007] A reinforcing steel bar conversion joint for strength detection includes:
[0008] The conversion joint includes:
[0009] The first connecting piece has an inner cavity with an inner conical guide surface,
[0010] The clamping piece has a conical surface and a clamping part, the conical surface is used to abut against the inner conical guide surface, and the clamping part is clamped with the reinforcing steel bar. The clamping piece is arranged in a circle,
[0011] An abutting member is threadedly arranged on the inner cavity, and an end of the abutting member is used for abutting with the clamping member.
[0012] As a further technical solution, the clamping members form a clamping cavity used for clamping the steel bars.
[0013] As a further technical solution, the abutting member comprises:
[0014] A first abutting member is arranged in the inner cavity in a lifting manner, and is used for abutting with the clamping member,
[0015] A second abutting member is threadedly arranged on the inner cavity,
[0016] An elastic member is arranged at one end of the first abutting member and at the other end of the second abutting member, and provides a force for abutting the first abutting member with the clamping member.
[0017] As a further technical solution, the clamping member has an outer conical guide surface located on one side of the clamping portion, and is used for guiding when the steel bar is inserted into the clamping cavity.
[0018] As a further technical solution, the first abutting member has a first accommodating groove, the second abutting member has a second accommodating groove, when the elastic member is compressed to the shortest, the first abutting member abuts with the second abutting member, and the elastic member is located in the first accommodating groove and the second accommodating groove.
[0019] As a further technical solution, the second abutting member has an adapter threaded hole opening into the inner cavity.
[0020] As a further technical solution, further comprising:
[0021] An adapter is threadedly arranged in the adapter threaded hole.
[0022] The working principle and beneficial effects of the utility model are as follows:
[0023] In the utility model, the clamping members in the adapter are arranged in a circumferential manner, the clamping portions can be clamped with the steel bars, and the clamping manner of the circumferential arrangement can adapt to steel bars of various shapes, whether the steel bars are circular or are special-shaped steel bars with certain edges and corners, effective fixation can be realized through the clamping members. For example, when special design prefabricated piles are processed, special-shaped steel bars with protrusions or grooves are used inside, the clamping portions of the clamping members can closely fit the special shapes of the steel bars, so that the steel bars do not shake or deviate during the adjustment process, and the universality and adaptability of the tooling to different types of steel bars are improved.
[0024] The first connecting piece in the conversion joint has an inner cavity provided with an inner conical guide surface, and the clamping piece has a corresponding conical surface. When the steel bar is inserted into the conversion joint, the conical surface first abuts against the inner conical guide surface, and the cooperation of the conical surfaces plays a precise guiding role. During the process of inserting the steel bar into the conversion joint, different steel bar diameters will push the clamping piece to different positions along the conical surface, so that the clamping diameter of the clamping piece changes, thereby being able to clamp different diameter steel bars, and even if the steel bar insertion angle is slightly deviated, under the guidance of the conical surface, the steel bar can also smoothly enter the correct position without causing the clamping piece to be deflected, so as to ensure that the clamping part of the clamping piece can accurately clamp the steel bar, and improve the accuracy and efficiency of the steel bar fixation.
[0025] Moreover, after the steel bar is inserted and clamped, the abutting piece is threadedly arranged on the inner cavity, and the end thereof is used for abutting against the clamping piece. By tightening the abutting piece, pressure can be applied to the clamping piece, so that the clamping piece clamps the steel bar more tightly, and the position accuracy of the steel bar in the fixing piece is ensured.
[0026] The conversion joint is threadedly arranged in the second threaded hole of the fixing piece, and this threaded connection mode makes the installation and disassembly of the conversion joint very convenient. In daily maintenance or when the conversion joint needs to be replaced, such as being worn or damaged due to long-term use, it only needs to be screwed out or screwed in by using a corresponding tool, without the need for complex disassembly and assembly operations. When the detection device is connected with the conversion joint, the strength detection can be realized, so that when the strength of the steel bar is detected, the connection speed of the detection device and the steel bar is faster, and the working hours wasted due to detection are reduced.
[0027] Moreover, since the conversion joint is a relatively independent component, the various components inside it, such as the first connecting piece, the clamping piece, the abutting piece, etc., are also convenient for individual inspection, maintenance and replacement. For example, if it is found that the clamping part of the clamping piece is damaged or deformed, the clamping piece can be taken out separately for repair or replacement, without the need for large-scale disassembly of the entire tooling, further simplifying the maintenance process and improving the maintainability of the tooling.
[0028] The conversion joint and the fixing piece are connected by threads, and this connection mode has high connection strength and stability. During long-term construction use, even in the case of frequent adjustment of the position of the steel bar, under the action of the self-weight of the steel bar and external forces such as vibration at the construction site, the conversion joint will not easily fall off from the second threaded hole of the fixing piece, ensuring the integrity and stability of the conversion joint.
[0029] Meanwhile, the abutting member is screwed on the inner cavity of the first connecting member inside the conversion joint, and the screw connection also enhances the stability of the connection between the components. When the abutting member is screwed to press the clamping member, the components can be tightly matched, and the components will not be loose or disconnected due to pressure changes or external force interference, further ensuring the firmness and stability of the reinforcement, so that the reinforcement of the precast pile can always maintain a stable state during the entire adjustment process, providing a strong guarantee for the quality detection of building construction. BRIEF DESCRIPTION OF DRAWINGS
[0030] The above-mentioned characteristics, technical features, advantages and implementation modes of the present application will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.
[0031] Fig. 1 The present application is a structural schematic diagram;
[0032] Fig. 2 The present application is a sectional structural schematic diagram;
[0033] In the figure: conversion joint-4, first connecting member-401, inner cavity-402, inner conical guide surface-403, clamping member-404, conical surface-405, clamping part-406, abutting member-407, clamping cavity-408, first abutting member-409, second abutting member-410, elastic member-411, outer conical guide surface-412, first accommodating groove-413, second accommodating groove-414, adapter screw hole-415, reducing joint-5. DETAILED DESCRIPTION
[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific implementation modes of the present application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.
[0035] In order to make the drawing simple, only the parts related to the present application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0036] In this article, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0037] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0038] Reference Figs. 1-2 For the first embodiment of the utility model, a reinforcing steel bar conversion joint for strength detection is proposed, which comprises a conversion joint 4, the conversion joint 4 comprises a first connecting piece 401, the first connecting piece 401 has an inner cavity 402, the inner cavity 402 has an inner tapered guide surface 403, the clamping piece 404 has a tapered surface 405 and a clamping part 406, the tapered surface 405 is used for abutting with the inner tapered guide surface 403, the clamping part 406 is clamped with the reinforcing steel bar, the clamping piece 404 is arranged in a plurality of circumferences, the abutting piece 407 is threadedly arranged on the inner cavity 402, and the end of the abutting piece 407 is used for abutting with the clamping piece 404.
[0039] In the embodiment, the clamping pieces 404 in the conversion joint 4 are arranged in a plurality of circumferences, the clamping parts 406 thereof can be clamped with the reinforcing steel bar, and the clamping mode of the circumferential arrangement can adapt to reinforcing steels of various shapes, whether it is a circular reinforcing steel or a special-shaped reinforcing steel with certain edges and corners, effective fixation can be realized through the clamping pieces 404. For example, when some special design prefabricated piles use special-shaped reinforcing steels with protrusions or grooves inside, the clamping parts 406 of the clamping pieces 404 can closely fit the special shape of the reinforcing steel, so that the reinforcing steel will not shake or deviate during the adjustment process, and the versatility and adaptability of the tooling to different types of reinforcing steels are improved.
[0040] The first connecting piece 401 in the conversion joint 4 has an inner cavity 402 provided with an inner tapered guide surface 403, and the clamping piece 404 has a tapered surface 405 corresponding thereto. When the steel bar is inserted into the conversion joint 4, the tapered surface 405 first abuts against the inner tapered guide surface 403, and the cooperation of the tapered surfaces plays a precise guiding role. During the process of inserting the steel bar into the conversion joint 4, different steel bar diameters will push the clamping piece 404 along the tapered surface to different positions, so that the clamping diameter of the clamping piece 404 changes, thereby being able to clamp steel bars of different diameters. At the same time, even if the insertion angle of the steel bar is slightly deviated, the steel bar can also smoothly enter the correct position under the guidance of the tapered surface, without causing the clamping piece 404 to be deflected, so as to ensure that the clamping part 406 of the clamping piece 404 can accurately clamp the steel bar, thereby improving the accuracy and efficiency of the steel bar fixation.
[0041] Moreover, after the steel bar is inserted and clamped, the abutting piece 407 is threadedly arranged on the inner cavity 402, and the end thereof is used to abut against the clamping piece 404. By screwing the abutting piece 407, pressure can be applied to the clamping piece 404, so that the clamping piece 404 clamps the steel bar more tightly, thereby guaranteeing the positional accuracy of the steel bar in the fixing member 2.
[0042] The conversion joint 4 is threadedly arranged in the second threaded hole 203 of the fixing member 2, and this threaded connection mode makes the installation and dismounting of the conversion joint 4 very convenient. When routine maintenance or replacement of the conversion joint 4 is needed, such as wear or damage due to long-term use, the conversion joint 4 can be screwed out or screwed in by using a corresponding tool, without the need for complex dismounting and assembling operations. When the detection device is connected with the conversion joint 4, the strength detection can be realized, so that the connection speed of the detection device and the steel bar is faster when the strength of the steel bar is detected, and the working hours wasted due to detection are reduced.
[0043] Moreover, since the conversion joint 4 is a relatively independent component, the various components inside it, such as the first connecting piece 401, the clamping piece 404, and the abutting piece 407, are also convenient for individual inspection, maintenance, and replacement. For example, if it is found that the clamping part 406 of the clamping piece 404 is damaged or deformed, the clamping piece 404 can be individually taken out for repair or replacement, without the need for large-scale disassembly of the entire tooling, thereby further simplifying the maintenance process and improving the maintainability of the tooling.
[0044] The conversion joint 4 and the fixing member 2 are connected by threading, and this connection mode has high connection strength and stability. During long-term construction use, even if the position of the steel bar is frequently adjusted, the steel bar is subjected to its own weight, and is affected by external forces such as vibration at the construction site, the conversion joint 4 will not easily fall off from the second threaded hole 203 of the fixing member 2, thereby ensuring the integrity and stability of the conversion joint 4.
[0045] Meanwhile, inside the conversion joint 4, the abutting piece 407 is threadedly arranged on the inner cavity 402 of the first connecting piece 401, and this threaded connection also enhances the stability of the connection between the components. When the abutting piece 407 is tightened to exert pressure on the clamping piece 404, the components can be tightly fitted together, and there will be no loosening or disconnection of the components due to changes in pressure or external interference, further ensuring the firmness and stability of the reinforcement fixation, so that the reinforcement of the precast pile can always maintain a stable state during the entire adjustment process, providing a strong guarantee for the quality detection of building construction.
[0046] Further, the clamping pieces 404 form a clamping cavity 408 for clamping the reinforcement.
[0047] In this embodiment, the design of the clamping pieces 404 forming the clamping cavity 408 provides a relatively customized accommodation space for the reinforcement. In building engineering, there are certain differences in the specifications and shapes of the reinforcement used by precast piles, and the clamping cavity 408 can be self-adaptively adjusted according to the actual conditions of different reinforcements. For example, for larger diameter reinforcement, the clamping pieces 404 will expand outward to a certain extent, increasing the inner diameter of the clamping cavity 408 to adapt to the size of the reinforcement; for smaller diameter reinforcement, the clamping pieces 404 will be closer together, reducing the inner diameter of the clamping cavity 408 to ensure tight wrapping of the reinforcement. This self-adaptive adjustment capability ensures that the reinforcement can be accurately and stably fixed in the clamping cavity 408 regardless of its thickness, effectively ensuring the positional accuracy of the reinforcement during strength detection, thereby improving the detection accuracy.
[0048] Meanwhile, the shape of the clamping cavity 408 can also better adapt to the shape characteristics of the reinforcement. If the reinforcement has a certain curvature or is not a standard circle, the clamping cavity 408 can conform to the shape of the reinforcement through the flexible arrangement and deformation of the clamping pieces 404, avoiding problems such as loose fixation and shaking due to the mismatch between the shape of the reinforcement and the fixation space, further ensuring the firmness and stability of the reinforcement fixation.
[0049] The clamping cavity 408 clamps the reinforcement from multiple directions through multiple clamping pieces 404, forming a full-range fixation method. Compared with traditional single-direction fixation, this full-range clamping can more effectively resist external interference from different directions. The clamping pieces 404 in the clamping cavity 408 tightly clamp the reinforcement from all around, so that the reinforcement can still remain in a fixed position when subjected to these external forces, without significant displacement, shaking or loosening, greatly enhancing the reliability of the reinforcement fixation and ensuring the structural integrity of the precast pile, reducing the occurrence of quality problems of the precast pile due to reinforcement strength detection.
[0050] Further, the abutting member 407 comprises a first abutting member 409, which is arranged in the inner cavity 402 in a lifting manner and used to abut against the clamping member 404, and a second abutting member 410, which is arranged on the inner cavity 402 in a threaded manner, and the elastic member 411 is arranged at one end of the first abutting member 409 and at the other end of the second abutting member 410, thereby providing the abutting force between the first abutting member 409 and the clamping member 404.
[0051] In the embodiment, the abutting member 407 is designed by the combination of the first abutting member 409, the second abutting member 410 and the elastic member 411, thereby providing the precise and adjustable abutting force for the clamping of the clamping member 404 and the steel bar. During the insertion of the steel bar into the clamping cavity 408, the relative position of the clamping member 404 is easy to change, and the elastic member 411 is arranged at one end of the first abutting member 409 and at the other end of the second abutting member 410, thereby providing the appropriate elastic force according to the sliding condition of the steel bar, so that the first abutting member 409 is closely abutted against the clamping member 404, thereby enabling the first abutting member 409 to provide a positioning force to the clamping member 404, and further enabling the clamping member 404 to precisely clamp the steel bar.
[0052] The first abutting member 409 is arranged in the inner cavity 402 in a lifting manner and abutted against the clamping member 404, and this design makes the abutting process more stable. Compared with some simple rigid abutting methods, the first abutting member 409 can be self-adaptively adjusted according to the actual position and state of the clamping member 404 under the action of the elastic member 411, thereby ensuring that the abutting between the first abutting member 409 and the clamping member 404 is always close and uniform during the insertion of the steel bar, and thereby avoiding the misalignment between the clamping members 404, thereby affecting the detection efficiency.
[0053] Further, the clamping member 404 has an outer conical guide surface 412, which is located on one side of the clamping portion 406 and used for guiding the insertion of the steel bar into the clamping cavity 408.
[0054] In this embodiment, the outer conical guide surface 412 of the fastener 404 is located on one side of the clamping part 406 and plays an extremely important guiding role when the steel bar is inserted into the clamping cavity 408. In construction engineering, the steel bar in the prefabricated pile needs to be accurately inserted into the clamping cavity 408 for fixation, so as to facilitate subsequent accurate adjustment operation. The conical design of the outer conical guide surface 412 can automatically align the steel bar to the center position during insertion. Even if the initial angle of the steel bar during insertion is slightly deviated, it can still be quickly adjusted in direction under the guidance of the conical surface and smoothly enter the clamping cavity 408. For example, due to limited operation space or inaccurate manual operation in the construction site, the steel bar may not be inserted at a completely vertical angle. However, with the guidance function of the outer conical guide surface 412, the steel bar can still be easily and accurately inserted into the clamping cavity 408, greatly improving the success rate and efficiency of steel bar insertion and reducing the risk of excessive detection time caused by difficult insertion.
[0055] Further, the first abutting member 409 has a first accommodating groove 413, the second abutting member 410 has a second accommodating groove 414, and the elastic member 411 is configured to be compressed to the shortest, the first abutting member 409 abuts against the second abutting member 410, and the elastic member 411 is located in the first accommodating groove 413 and the second accommodating groove 414.
[0056] In this embodiment, the first abutting member 409 has a first accommodating groove 413, the second abutting member 410 has a second accommodating groove 414, and the elastic member 411 is compressed to the shortest, the first abutting member 409 abuts against the second abutting member 410, and the elastic member 411 is located in the two accommodating grooves. This design cleverly limits the working range of the elastic member 411, so as to accurately control the clamping force of the clamping member 404 during use. When the first abutting member 409 abuts against the second abutting member 410, rotating the second abutting member 410 can make the first abutting member 409 provide stable abutting force to the clamping member 404, thereby ensuring the clamping effect of the clamping member 404 on the steel bar.
[0057] Further, the second abutting member 410 has a transfer threaded hole 415 which is open to the inner cavity 402.
[0058] In this embodiment, the transfer threaded hole 415 of the second abutting member 410 is open to the inner cavity 402, which brings more functional expansion possibilities and flexible adjustment convenience to the tooling. When testing the prefabricated pile steel bar pull-out force, the transfer threaded hole 415 can be used as an interface to be screw-connected with the pull-out force detection device. This multifunctional transfer and adaptation capability realized through the transfer threaded hole 415 enables the tooling to better meet various complex construction requirements and improves its versatility and practicality.
[0059] The adapter threaded hole 415 also provides a convenient tool access point for on-site operations by construction personnel. In a construction site, construction personnel may need to use various tools to maintain, adjust, or monitor the tooling. This convenient tool access greatly simplifies the operation process, reduces the workload of construction personnel, improves construction efficiency, and reduces the risk of damage to the tooling due to improper operation. When the second abutting piece 410 itself needs to be replaced or repaired, the adapter threaded hole 415 can also serve as an auxiliary operation point. Construction personnel can use the adapter threaded hole 415 in conjunction with corresponding tools such as special disassembly tools to more easily disassemble the second abutting piece 410 from the inner cavity 402, then perform replacement or repair operations, and then reinstall the new or repaired second abutting piece 410 through the adapter threaded hole 415. The entire process is simple and efficient, improving the maintainability of the tooling and ensuring the detection efficiency during detection.
[0060] Further, a reducing adapter 5 is threadedly arranged in the adapter threaded hole 415.
[0061] In this embodiment, the reducing adapter 5 is threadedly arranged in the adapter threaded hole 415, which greatly enhances the adaptability of the conversion adapter 4 to steel bars of different diameters. In construction engineering, the steel bars used in precast piles have various specifications, and their diameters can differ greatly. When strength detection is required, the detection device adapter is often difficult to directly access the adapter threaded hole 415, and the reducing adapter can be used for connection at this time, improving the adaptability of the conversion adapter.
[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and all should be included in the scope of the claims of the present application.
Claims
1. A reinforcing bar conversion joint for strength testing, characterised in that, Comprise: A conversion joint (4) comprising: A first connecting piece (401) having an inner cavity (402) with an inner tapered guide surface (403), A clamping piece (404) having a tapered surface (405) for abutting with the inner tapered guide surface (403) and a clamping portion (406) clamped with the steel bar, the clamping piece (404) being arranged in several circumferential rows, An abutting piece (407) threadedly arranged on the inner cavity (402), the end of the abutting piece (407) being used to abut with the clamping piece (404).
2. The reinforcing bar transition joint for strength detection according to claim 1, characterized by The clamping pieces (404) form a clamping cavity (408) for clamping the steel bar.
3. The reinforcing bar transition joint for strength testing according to claim 2, characterized in that, The abutting piece (407) comprises: A first abutting piece (409) arranged in the inner cavity (402) for abutting with the clamping piece (404), A second abutting piece (410) threadedly arranged on the inner cavity (402), An elastic piece (411) acting on one end of the first abutting piece (409) and the other end of the second abutting piece (410), providing the force for the first abutting piece (409) to abut with the clamping piece (404).
4. The reinforcing bar transition joint for strength detection according to claim 3, characterized by The clamping piece (404) has an outer tapered guide surface (412) on one side of the clamping portion (406) for guiding when the steel bar is inserted into the clamping cavity (408).
5. A reinforcing bar transition joint for strength testing according to claim 4, characterised in that, The first abutting piece (409) has a first accommodating groove (413), the second abutting piece (410) has a second accommodating groove (414), and the elastic piece (411) is arranged to be compressed to the shortest, the first abutting piece (409) abuts with the second abutting piece (410), and the elastic piece (411) is located in the first accommodating groove (413) and the second accommodating groove (414).
6. A reinforcing bar transition joint for strength testing according to claim 5, characterised in that, The second abutting piece (410) has a conversion threaded hole (415) leading to the inner cavity (402).
7. The reinforcing bar transition joint for strength testing according to claim 6, wherein Further comprising: A reducing joint (5) threadedly arranged in the conversion threaded hole (415).