Steel and concrete tensile strength detection device

Abstract

The utility model provides a steel and concrete tensile strength detection device, and relates to the technical field of constructional engineering. The middle position of the front end in the fixing frame is rotationally connected with a bidirectional screw with handles at the two ends, the two sides of the front end in the fixing frame are slidably connected with bidirectional sliding blocks with threaded holes in the side faces respectively, and the left end and the right end of the bidirectional screw are located in the threaded holes of the bidirectional sliding blocks respectively. The fitting piece and the limiting piece are connected in a rotating mode, when the concrete workpiece is fixed, the fitting piece can be adjusted in a self-adaptive rotating mode according to the structural shape of the concrete workpiece, the detection device can adapt to the concrete workpieces of different structural shapes, the universality of the detection device is greatly improved, and the application range of the detection device is widened. The problem that an existing detection device cannot be effectively attached and fixed according to the actual structural shape of a concrete workpiece, and consequently universality is insufficient is solved.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and more specifically, it relates to a device for testing the tensile strength of steel and concrete. Background Technology

[0002] In the field of modern construction engineering, steel-concrete composite structures are widely used in various engineering projects such as bridges, high-rise buildings, and industrial plants due to their advantages such as good mechanical properties, high load-bearing capacity, and excellent seismic performance. In steel-concrete composite structures, the connection performance between steel and concrete is one of the key factors to ensure the overall performance of the structure. Tensile strength, as an important indicator for measuring the connection performance between the two, is crucial for assessing the safety and reliability of the composite structure.

[0003] Application number CN202210173531.5 discloses a tooling for testing the bond strength between steel and concrete, which facilitates the testing of the bond strength between steel bars and concrete on the construction site, improving the ease of use and accuracy of the device. It includes a pressure plate, multiple sets of pressure sensors, a mounting plate, multiple sets of helical tubes, multiple sets of gears, an internal gear ring, multiple sets of connecting rods, a rotating handle, multiple sets of screws, a connecting plate, a protective cover, and clamping components. The pressure plate has a first insertion hole at its center. Multiple sets of pressure sensors are evenly distributed and fixedly installed on the right end face of the pressure plate. The mounting plate is fixedly connected to the detection ends of the multiple sets of pressure sensors. The mounting plate has a second insertion hole. Multiple sets of helical tubes are evenly distributed and rotatably installed on the right end face of the mounting plate. Multiple sets of gears are respectively fixedly installed on the multiple sets of helical tubes. The internal gear ring is rotatably installed on the right end face of the mounting plate, and all sets of gears mesh with the internal gear ring. Multiple sets of connecting rods are located on the outer end face of the internal gear ring.

[0004] Based on the above patent searches and understanding of existing applications of tensile strength testing for steel and concrete:

[0005] 1. In the existing tensile strength testing of steel and concrete, the fixed installation of the testing device often relies on a third party for fixation and maintenance, which is cumbersome and inefficient. At the same time, the stability of the fixation is difficult to guarantee, affecting the accuracy and reliability of the test.

[0006] 2. Traditional testing devices have poor adaptability to concrete components with different structural shapes and are difficult to effectively fit and fix according to the actual structural shape of the concrete components, resulting in insufficient versatility and limiting the application range of the testing devices.

[0007] 3. Existing testing devices struggle to accurately locate and clamp reinforcing bars at different positions within concrete, failing to meet diverse testing needs and impacting the comprehensiveness and accuracy of the test results. Utility Model Content

[0008] To address the aforementioned technical problems, this utility model provides a steel and concrete tensile strength testing device. This addresses the issues that existing testing devices often rely on third-party fixation for installation, resulting in cumbersome operation and low installation efficiency. Furthermore, current testing devices cannot effectively fit and fix the concrete components according to their actual structural shape, leading to insufficient versatility. Additionally, existing testing devices struggle to accurately position, select, and clamp, failing to meet diverse testing needs.

[0009] The technical solution adopted in this utility model is as follows:

[0010] A steel and concrete tensile strength testing device includes a fixed frame; a bidirectional screw with handles at both ends is rotatably connected to the middle of the front end of the fixed frame; a bidirectional slider with threaded holes on its side is slidably connected to both sides of the front end of the fixed frame; the left and right ends of the bidirectional screw are respectively located in the threaded holes of a bidirectional slider; a limiting member is fixedly connected to the middle of the front end of each bidirectional slider; two semi-circular grooves are opened on the inner side of each limiting member; and a fitting member is rotatably connected to each semi-circular groove of the limiting member.

[0011] According to one embodiment of the present invention, a spacing frame is fixedly connected to the top middle position of the fixed frame, a motor A is fixedly connected to the top middle position of the spacing frame, an L-shaped lifting frame is slidably connected to the front end of the inner side of the spacing frame, a threaded hole is opened at the top rear end position of the lifting frame, the shaft of the motor A is threaded, and the shaft of the motor A passes through the threaded hole of the lifting frame.

[0012] According to one embodiment of the present invention, a positioning frame is fixedly installed at the lower front end of the lifting frame, and the lower part of the positioning frame is fixedly connected to the inner position of the gear ring.

[0013] According to one embodiment of the present invention, a surrounding member is slidably connected to the circumferential surface of the toothed ring, and a motor B is provided at the bottom outer side of the surrounding member. The rotating shaft of the motor B is fixedly connected to a gear B, and the gear B meshes with the toothed ring for transmission.

[0014] According to one embodiment of the present invention, an adjustment frame is fixedly installed at the bottom of the surrounding member by a connecting rod, and a motor C is fixedly installed on the inner side of the adjustment frame. The shaft of the motor C is threaded and passes through the inner position of the adjustment frame.

[0015] According to one embodiment of the present invention, an adjusting block is slidably connected to the inner position of the adjusting frame, and the adjusting block has a threaded hole. The rotating shaft of the motor C passes through the threaded hole of the adjusting block, and a chuck clamp is provided at the top position of the adjusting block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention, by setting up a bidirectional screw, bidirectional sliders, limiting components, and bonding components, allows for easy and convenient operation during testing. The concrete component is placed between two limiting components, and the handle of the bidirectional screw is rotated to move the two bidirectional sliders in opposite directions, reducing the distance between the two limiting components until all four bonding components are in contact with the concrete component. This achieves a fixed installation of the testing device without the need for third-party maintenance, ensuring high stability and accuracy.

[0018] The bonding component and the limiting component are connected by a rotation. When fixing the concrete component, the bonding component can be adaptively rotated and adjusted according to the structural shape of the concrete component. This can adapt to concrete components with different structural shapes, greatly increasing the versatility of the testing device and expanding its application range.

[0019] Through the coordination of motor B, gear B, gear ring, surrounding component, motor C, adjusting block, and chuck clamp, the angle and position of the adjusting frame, motor C, adjusting block, and chuck clamp can be flexibly adjusted, enabling the chuck clamp to be accurately positioned above and clamped above the reinforcing bars at different locations inside the concrete. This achieves precise positioning and selection of reinforcing bars at different locations inside the concrete, meets diverse testing needs, and improves the comprehensiveness and accuracy of the testing results. Attached Figure Description

[0020] Figure 1 This is a top view schematic diagram of the steel and concrete tensile strength testing device of this utility model.

[0021] Figure 2 This is a schematic diagram of the left side of the steel and concrete tensile strength testing device of this utility model.

[0022] Figure 3 This is a side view schematic diagram of the steel and concrete tensile strength testing device of this utility model.

[0023] Figure 4 This is a side view of the overall structure of the fixing frame of this utility model.

[0024] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0025] 1. Fixing frame; 101. Bidirectional screw; 102. Bidirectional slider; 103. Limiting component; 104. Fitting component; 2. Spacing frame; 201. Motor A; 202. Lifting frame; 203. Positioning frame; 204. Gear ring; 205. Surrounding component; 206. Motor B; 207. Gear B; 208. Adjusting frame; 209. Motor C; 210. Adjusting block; 211. Chuck clamp. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The use of terms such as "a," "an," or "the" in this utility model patent application specification and claims does not indicate a quantity limitation, but rather indicates the presence of at least one. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0028] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0029] Example:

[0030] As attached Figure 1 To be continued Figure 4 As shown:

[0031] This utility model provides a device for testing the tensile strength of steel and concrete, including a fixed frame 1; a bidirectional screw 101 with handles at both ends is rotatably connected to the middle position of the front end of the fixed frame 1; a bidirectional slider 102 with threaded holes on the side is slidably connected to the two sides of the front end of the fixed frame 1; the left and right ends of the bidirectional screw 101 are respectively located in the threaded holes of a bidirectional slider 102; a limiting member 103 is fixedly connected to the middle position of the front end of each bidirectional slider 102; two semi-circular grooves are opened on the inner side of each limiting member 103; and a fitting member 104 is rotatably connected to each semi-circular groove of the limiting member 103.

[0032] The fixed frame 1 has a fixedly connected spacing frame 2 at the top center, and a fixedly connected motor A201 at the top center of the spacing frame 2. An L-shaped lifting frame 202 is slidably connected to the front end of the spacing frame 2. A threaded hole is provided at the rear end of the top of the lifting frame 202, and the shaft of the motor A201 is threaded and passes through the threaded hole of the lifting frame 202. A positioning frame 203 is fixedly installed below the front end of the lifting frame 202, and the lower part of the positioning frame 203 is fixedly connected to the inside of a gear ring 204. A surrounding component 205 is slidably connected to the circumference of the gear ring 204, and the bottom of the surrounding component 205... A motor B206 is installed on the side, and the shaft of the motor B206 is fixedly connected to a gear B207. The gear B207 meshes with the gear ring 204 for transmission. An adjusting frame 208 is fixedly installed around the bottom of the component 205 via a connecting rod. A motor C209 is fixedly installed on the inner side of the adjusting frame 208. The shaft of the motor C209 is threaded and passes through the inner position of the adjusting frame 208. An adjusting block 210 is slidably connected to the inner position of the adjusting frame 208, and the adjusting block 210 has a threaded hole. The shaft of the motor C209 passes through the threaded hole of the adjusting block 210. A chuck clamp 211 is installed on the top position of the adjusting block 210.

[0033] When using:

[0034] When the testing device needs to be fixedly installed at the concrete testing position, place the concrete component between the two limiting members 103, and then rotate the handle on the bidirectional screw 101. Since the left and right ends of the bidirectional screw 101 are respectively engaged with the threaded holes of the bidirectional slider 102, the rotation of the bidirectional screw 101 will drive the two bidirectional sliders 102 to move in opposite directions on both sides of the front end of the fixed frame 1, reducing the distance between the two limiting members 103 until the four fitting members 104 fit the concrete component, thus fixing the testing device at the testing position. No third-party fixation is required. Furthermore, combined with the rotation operation between the fitting members 104 and the limiting members 103, the fitting members 104 will adapt to the structural shape of the concrete component and perform adaptive rotation adjustment, increasing versatility.

[0035] When motor B206 is started, gear B207, which is fixedly connected to the shaft of motor B206, meshes with gear ring 204, thereby driving the surrounding member 205 to rotate on the circumference of gear ring 204. By controlling the rotation of motor B206, the angle of surrounding member 205 is adjusted so that adjusting frame 208, motor C209, adjusting block 210, and chuck clamp 211 are in a suitable angular position. When motor C209 is started, the shaft of motor C209 is threaded and passes through the threaded hole of adjusting block 210. The rotation of motor C209 will drive adjusting block 210 to slide inside adjusting frame 208. After the above adjustment, chuck clamp 211 can be accurately positioned above the steel reinforcement inside the concrete. The steel reinforcement is clamped by chuck clamp 211. In summary, the above structure type can be used to locate and select the position of steel reinforcement in different positions inside concrete.

[0036] When motor A201 is started, the shaft of motor A201 is threaded and passes through the threaded hole at the rear end of the top of the lifting frame 202. The rotation of motor A201 will cause the lifting frame 202 to slide at the front end of the internal spacer 2, increasing the overall distance between the chuck clamp 211 and the fixed frame 1. If the steel bar held by the chuck clamp 211 is deformed or displaced, motor A201 will stop suddenly to determine the sliding distance of the lifting frame 202 in the spacer 2, thereby determining the tensile strength limit of the steel and concrete.

[0037] Although this application has been described with reference to the foregoing embodiments, those skilled in the art will understand that various changes can be made without departing from the spirit and scope of this application as defined by the appended claims. While this specification contains details of many specific implementations, these should not be construed as limiting the scope of the claims, but rather as descriptions of features specific to particular embodiments. The scope of this application is defined by the appended claims and their equivalents, and is not limited to the embodiments described above.

Claims

1. A steel and concrete tensile strength detection device, characterized in that: Including fixed frame (1);The inside front end of the fixed frame (1) is rotationally connected with two-way screw rod (101) with handle at both ends, and the inside front end of the fixed frame (1) is slidably connected with two-way sliding block (102) with threaded hole opened on the side, the left and right ends of the two-way screw rod (101) are located in the threaded hole of one two-way sliding block (102) respectively, the front end of each two-way sliding block (102) is fixedly connected with a limiting piece (103), two semicircular grooves are formed in the inner side of each limiting piece (103), and a fitting piece (104) is rotationally connected in the semicircular groove of the limiting piece (103).

2. The device for testing the tensile strength of steel and concrete according to claim 1, characterized in that: The top of the fixed frame (1) is fixedly connected with a spacing frame (2), the top of the spacing frame (2) is fixedly connected with motor A (201), the inside front end of the spacing frame (2) is slidably connected with L-shaped lifting frame (202), the top rear end of the lifting frame (202) is provided with a threaded hole, the rotating shaft of the motor A (201) is provided with a thread, and the rotating shaft of the motor A (201) is connected in the threaded hole of the lifting frame (202).

3. The device for testing the tensile strength of steel and concrete according to claim 2, characterized in that: The front end of the lifting frame (202) is fixedly connected with a positioning frame (203), and the positioning frame (203) is fixedly connected with a tooth ring (204).

4. The device for testing the tensile strength of steel and concrete according to claim 3, characterized in that: The circumferential surface of the tooth ring (204) is slidably connected with a surrounding member (205), the bottom of the surrounding member (205) is provided with a motor B (206), the rotating shaft of the motor B (206) is fixedly connected with a gear B (207), and the gear B (207) is engaged with the tooth ring (204).

5. The apparatus for testing the tensile strength of steel and concrete according to claim 4, wherein: The bottom of the surrounding member (205) is fixedly connected with an adjusting frame (208) through a connecting rod, the inner side of the adjusting frame (208) is fixedly connected with a motor C (209), the rotating shaft of the motor C (209) is provided with a thread, and the rotating shaft of the motor C (209) is connected in the inside of the adjusting frame (208).

6. The apparatus for testing the tensile strength of steel and concrete according to claim 5, wherein: The inside of the adjusting frame (208) is slidably connected with an adjusting block (210), and the adjusting block (210) is provided with a threaded hole, the rotating shaft of the motor C (209) is connected in the threaded hole of the adjusting block (210), and the top of the adjusting block (210) is provided with a chuck clamp (211).

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