A reinforcing bar testing device

Abstract

The utility model discloses a reinforcing bar detection test device, include: testing machine main part, mobile frame and fixed assembly, the testing machine main part is used for the tensile test of reinforcing bar, mobile frame sets up in the front of testing machine main part, the fixed assembly is used for the clamping of reinforcing bar end, the fixed assembly includes the limiting portion who sets up in the top of testing machine main part and the top of mobile frame, the inner chamber of limiting portion is provided with the movable part for clamping reinforcing bar, the front of limiting portion is provided with the blocking portion for the limiting movable part, the utility model discloses setting up the fixed assembly in the side of testing machine main part and mobile frame, and the movable part of clamping reinforcing bar in the inner chamber of limiting portion is positioned to blocking portion in fixed assembly, compared with directly using bolt to insert the pressing plate and carries out the limiting fixed of movable part, this blocking portion design avoids the pressing plate long -time to be extruded, and the phenomenon of easy bolt loosening is caused.

Description

Technical Field

[0001] This utility model relates to the field of rebar testing equipment, and in particular to a rebar testing device. Background Technology

[0002] In the field of building construction quality inspection, the mechanical property testing of reinforcing steel bars is a core step in determining structural safety. The reliability of the sample clamping system directly determines the measurement accuracy of key parameters such as tensile strength and yield load. Traditional reinforcing steel bar testing devices generally use a bolt-plate rigid locking mechanism to limit the movable part (movable clamping block of the fixture).

[0003] However, during the test, the high-frequency vibration impact generated by the tension of the steel bar causes the bolt preload to decrease exponentially. Therefore, after multiple steel bar tests, the pressure plate bolts are prone to loosening, which may lead to the risk of the movable clamping block falling off.

[0004] Therefore, how to construct a structure that avoids bolt loosening due to vibration and impact has become an urgent technical problem to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a steel bar testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a steel bar testing device, comprising: The main body of the testing machine is used for tensile testing of reinforcing bars; A movable frame, which is located on the front of the main body of the testing machine; A fixing component is provided for clamping the end of a reinforcing bar. The fixing component includes a limiting part disposed on the top of the main body of the testing machine and the top of the moving frame. The inner cavity of the limiting part is provided with a movable part for clamping the reinforcing bar, and the front of the limiting part is provided with a blocking part for limiting the movable part.

[0007] Preferably, the limiting portion includes: Fixed sleeves, a plurality of fixed sleeves are respectively disposed on the top of the main body of the testing machine and the top of the movable frame; A clamping slot block is provided at the bottom of a fixed sleeve, and a movable part is provided in the inner cavity of the clamping slot block.

[0008] Preferably, the active part includes: Clamping blocks, a plurality of clamping blocks are symmetrically arranged in the inner cavity of the clamping groove block, the clamping blocks being used to clamp the ends of the reinforcing bars; A lifting member is disposed in the inner cavity of the clamping slot block, and the lifting member is used to lift and move the clamping block.

[0009] Preferably, the clamping side of the clamping block is provided with a friction groove, which is used to increase the surface friction of the clamping block.

[0010] Preferably, the lifting element includes: A movable toothed column, the end of which is inserted into the inner cavity of the clamping slot block and the inner cavity of the fixed sleeve, and the bottom of which is inserted into the top of the clamping block. A lifting hole is provided on the top of the clamping block, and the lifting hole is used to move the toothed column through the insertion. A rotating toothed block is hinged to the front of a clamping slot block, and the rotating toothed block meshes with the side of the clamping slot block.

[0011] Preferably, the blocking portion includes: A plurality of the closing blocks are symmetrically interspersed on the front side of the clamping slot block; A fixing bolt, the ends of which are sequentially inserted and connected to the front of the closing block and the front of the clamping groove block; An anti-loosening component is provided at the intersection of the fixing bolt and the sealing block, and the anti-loosening component is used to prevent the fixing bolt from loosening.

[0012] Preferably, the anti-loosening component includes: An active hole is provided on the front side of the closed block; A compression spring is sleeved on the outside of the fixing bolt and located in the inner cavity of the movable hole. The compression spring is used to increase the thread friction of the fixing bolt.

[0013] The technical effects and advantages of this utility model are as follows: This invention features a fixing component on the side of the main body of the testing machine and the moving frame. The blocking part in the fixing component limits the movable part of the reinforcing bar clamped in the inner cavity of the limiting part. Compared with directly using bolts to insert pressure plates to limit and fix the movable part, this blocking part design avoids the pressure plate being squeezed by the movable part for a long time, which can easily lead to the bolts loosening. Attached Figure Description

[0014] Figure 1 This is a front view of the entire utility model.

[0015] Figure 2 This is a front view of the fixing component of this utility model.

[0016] Figure 3 This is a cross-sectional view of the entire utility model.

[0017] Figure 4 This is a cross-sectional view of the connection between the fixing bolt and the clamping groove block of this utility model.

[0018] In the diagram: 1. Main body of the testing machine; 2. Moving frame; 3. Fixed assembly; 301. Fixed sleeve; 302. Moving gear column; 303. Rotating gear block; 304. Clamping groove block; 305. Clamping block; 3051. Lifting hole; 3052. Friction groove; 306. Sealing block; 3061. Movable hole; 307. Fixing bolt; 308. Compression spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides, for example Figure 1 - Figure 4 The steel bar testing device shown includes: a testing machine body 1, a movable frame 2, and a fixing component 3; Specifically, the main body 1 of the testing machine is used for tensile testing of reinforcing bars, the movable frame 2 is set on the front of the main body 1 of the testing machine, and the fixing component 3 is used for clamping the ends of the reinforcing bars; It should be noted that the overall structure of the testing machine body 1 and the moving frame 2 refers to the working principle of the STS1000 testing machine; Specifically, the fixing component 3 includes a limiting part disposed on the top of the main body 1 of the testing machine and the top of the moving frame 2. The inner cavity of the limiting part is provided with a movable part for clamping the reinforcing bar, and the front of the limiting part is provided with a blocking part for limiting the movable part. Furthermore, the limiting part includes: a fixing sleeve 301 and a clamping groove block 304; Specifically, multiple fixed sleeves 301 are respectively disposed on the top of the main body 1 of the testing machine and the top of the movable frame 2, the clamping groove block 304 is disposed on the bottom of the fixed sleeve 301, and the movable part is disposed in the inner cavity of the clamping groove block 304. It should be noted that the fixed sleeve 301 is fixed to the top of the main body 1 of the testing machine and the top of the moving frame 2 by welding, and the clamping slot block 304 is fixed to the fixed sleeve 301 by welding. Furthermore, the active part includes: clamping block 305 and lifting component; It should be noted that multiple clamping blocks 305 are symmetrically arranged in the inner cavity of the clamping slot block 304. The clamping blocks 305 are used to clamp the ends of the reinforcing bars. The lifting member is arranged in the inner cavity of the clamping slot block 304 and is used to lift and move the clamping blocks 305. Specifically, the clamping side of the clamping block 305 is provided with a friction groove 3052, which is used to increase the surface friction of the clamping block 305. Furthermore, the lifting component includes: a movable toothed column 302, a lifting hole 3051, and a rotating toothed block 303; It should be noted that the end of the movable toothed column 302 is inserted into the inner cavity of the clamping slot block 304 and the inner cavity of the fixed sleeve 301. The bottom of the movable toothed column 302 is inserted into the top of the clamping block 305. The lifting hole 3051 is opened on the top of the clamping block 305. The lifting hole 3051 is used for the insertion of the movable toothed column 302. The rotating toothed block 303 is hinged to the front of the clamping slot block 304. The rotating toothed block 303 meshes with the side of the clamping slot block 304. Specifically, the bottom of the movable toothed column 302 is provided with a protrusion for engaging the lifting hole 3051. During the upward movement of the movable frame 2 as a whole, the two clamping blocks 305 press against each other and move closer together to achieve stable clamping of the reinforcing bar. By rotating the rotating toothed block 303, the operator can drive the movable toothed column 302 upward, thereby moving the two clamping blocks 305 away from each other and unlocking the reinforcing bar.

[0021] It should be noted that the blocking part includes: a sealing block 306, an anti-loosening component, and a fixing bolt 307; Specifically, multiple closed blocks 306 are symmetrically interspersed on the front of the clamping slot block 304, and the ends of the fixing bolts 307 are sequentially interspersed on the front of the closed blocks 306 and the front of the clamping slot block 304. Anti-loosening components are provided at the intersection of the fixing bolts 307 and the closed blocks 306. It should be noted that the clamping slot block 304 has screw holes corresponding to the fixing bolts 307 on its front side, and the anti-loosening component is used to prevent the fixing bolts 307 from loosening. Specifically, the anti-loosening components include: movable hole 3061 and compression spring 308; It should be noted that the movable hole 3061 is opened on the front of the closed block 306, and the compression spring 308 is sleeved on the outside of the fixing bolt 307 and located in the inner cavity of the movable hole 3061. The compression spring 308 is used to increase the thread friction of the fixing bolt 307. Specifically, the compressed spring 308 exerts a thrust on the fixing bolt 307 under pressure, making the fixing bolt 307 in close contact with the screw hole and preventing the fixing bolt 307 from loosening.

[0022] In actual use, a fixing component 3 is provided on the side of the main body 1 and the moving frame 2 of the testing machine. The blocking part in the fixing component 3 is used to limit the movable part of the steel bar clamped in the inner cavity of the limiting part. Compared with directly using bolts to insert the pressure plate to limit and fix the movable part, this blocking part design avoids the pressure plate being squeezed by the movable part for a long time, which can easily lead to the loosening of the bolts.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A testing device for reinforcing steel bars, characterized in that, include: The main body of the testing machine (1) is used for tensile testing of reinforcing bars; A movable frame (2) is disposed on the front of the main body (1) of the testing machine; The fixing component (3) is used to clamp the end of the reinforcing bar. The fixing component (3) includes a limiting part set on the top of the main body (1) of the testing machine and the top of the moving frame (2). The inner cavity of the limiting part is provided with a movable part for clamping the reinforcing bar, and the front of the limiting part is provided with a blocking part for limiting the movable part.

2. The steel reinforcement testing device according to claim 1, characterized in that, The limiting part includes: Fixed sleeves (301), a plurality of fixed sleeves (301) are respectively disposed on the top of the main body (1) of the testing machine and the top of the movable frame (2); A clamping slot (304) is provided at the bottom of a fixed sleeve (301), and the movable part is provided in the inner cavity of the clamping slot (304).

3. The steel reinforcement testing device according to claim 2, characterized in that, The activity department includes: Clamping blocks (305), a plurality of clamping blocks (305) are symmetrically arranged in the inner cavity of clamping slot block (304), the clamping blocks (305) are used to clamp the ends of the reinforcing bars; A lifting member is disposed in the inner cavity of the clamping slot (304) and is used for lifting and moving the clamping block (305).

4. The steel reinforcement testing device according to claim 3, characterized in that, The clamping side of the clamping block (305) is provided with a friction groove (3052), which is used to increase the surface friction of the clamping block (305).

5. A steel bar testing device according to claim 3, characterized in that, The lifting component includes: The movable toothed column (302) has its end inserted into the inner cavity of the clamping slot block (304) and the inner cavity of the fixed sleeve (301), and its bottom is inserted into the top of the clamping block (305). A lifting hole (3051) is provided on the top of the clamping block (305), and the lifting hole (3051) is used for the insertion of the moving toothed column (302); Rotating tooth block (303), the rotating tooth block (303) is hinged to the front of clamping slot block (304), and the rotating tooth block (303) meshes with the side of clamping slot block (304).

6. The steel reinforcement testing device according to claim 3, characterized in that, The blocking part includes: A plurality of the closing blocks (306) are symmetrically interspersed on the front side of the clamping slot block (304); Fixing bolt (307), the ends of which are sequentially inserted and connected to the front of the closing block (306) and the front of the clamping groove block (304); An anti-loosening component is provided at the intersection of the fixing bolt (307) and the closing block (306), and the anti-loosening component is used to prevent the fixing bolt (307) from loosening.

7. A steel bar testing device according to claim 6, characterized in that, The anti-loosening component includes: An active hole (3061) is provided on the front side of the closed block (306); A compression spring (308) is sleeved on the outside of the fixing bolt (307) and located in the inner cavity of the movable hole (3061). The compression spring (308) is used to increase the thread friction of the fixing bolt (307).

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