Device for detecting tensile strength of embedded bar glue

Abstract

The utility model relates to the technical field of embedded steel bar glue, in particular to an embedded steel bar glue tensile strength detection device which comprises an upper supporting frame, a concrete test block is placed on the inner wall of the bottom of the upper supporting frame, a clamping assembly used for fixing the concrete test block is arranged at the bottom of the upper supporting frame, and a testing groove is formed in the top of the concrete test block. A testing groove is formed in the upper supporting frame, a testing steel bar is inserted into the testing groove, steel bar planting glue is injected into the testing groove, a three-jaw chuck for fixing the testing steel bar is arranged in the upper supporting frame, and a lifting assembly is arranged at the top of the three-jaw chuck. According to the utility model, the stable performance of the test component is ensured, the tensile strength of the embedded steel bar glue is measured by adjusting the height of the test component through the lifting component and observing whether the pressure reading of the display screen is greatly changed, the operation is convenient, and the tensile detection is directly carried out on the bonding area of the embedded steel bar glue by adopting the concrete test block and the test steel bar; the detection test data can be more effective, and the detection effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of rebar-planting glue, in particular to a rebar-planting glue tensile strength detection device. Background Art

[0002] Rebar reinforcement is a simple and effective connection and anchoring technology for concrete structures. It uses a specific glue or adhesive to stick ordinary steel bars or bolted anchor bars to the internal components of the building to achieve the purpose of reinforcing and repairing the internal components. It is now widely used in the reinforcement and renovation of buildings. When used, a special injection glue gun is used to inject it into the hole. It has the characteristics of rapid solidification, strong anchoring force, pre-embedded, no expansion stress, good seismic performance, convenience and speed, anti-aging, and good resistance to media (acid, alkali, salt).

[0003] After searching, the patent publication number CN211179478U is a detection device for detecting the tensile viscosity of sealant, including a bracket, a top frame is fixedly connected to the inner side of the bracket near the top, and a bottom frame is fixedly connected to the inner side of the bottom of the bracket away from the top frame. A first pull rod is passed through the middle of the top frame, and a first hook is hinged at the bottom end of the first pull rod. A second pull rod is passed through the middle of the bottom frame, and a second hook is hinged at the top end of the second pull rod. A pre-pressure adjustment mechanism is also installed on the top of the bracket, and the pre-pressure adjustment mechanism is connected to the surface of the first pull rod. In the process of implementing this solution, it was found that the following problems in the prior art have not been well solved: the prior art directly detects the rebar glue itself when testing the tensile strength of the rebar glue, and cannot detect the bonding point, so that the test data cannot be fully explained, affecting the detection effect. Therefore, it is urgent to design a rebar glue tensile strength detection device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a tensile strength detection device for reinforcing bar adhesive to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A rebar planting glue tensile strength testing device comprises an upper support frame, a concrete test block is placed on the inner wall of the bottom of the upper support frame, and a clamping assembly for fixing the concrete test block is arranged at the bottom of the upper support frame, a test groove is opened on the top of the concrete test block, and a test steel bar is inserted into the inside of the test groove, and rebar planting glue is injected into the test groove, a three-jaw chuck for fixing the test steel bar is arranged inside the upper support frame, and a lifting assembly is arranged on the top of the three-jaw chuck, and a test assembly is arranged in the middle position of the lifting assembly.

[0007] Furthermore, the clamping assembly includes guide openings opened at both ends of the bottom of the upper support frame, and the inside of the guide openings is plugged with a clamping plate, the top of the clamping plate is attached to the top surface of the concrete test block, a lifting sleeve is fixed at the middle position of the bottom of the clamping assembly, and a threaded rod is rotatably connected to the middle position of the bottom of the upper support frame, the outer wall of the threaded rod is screwed to the inner wall of the lifting sleeve, and a knob is fixed at the bottom of the threaded rod.

[0008] Furthermore, a disassembly opening is provided on one side of the middle position of the top of the clamping plate, and an inclined glue injection tube is fixedly installed on one side of the disassembly opening.

[0009] Furthermore, the lifting assembly includes a cylinder fixedly mounted on both ends of the inner wall at the top of the upper support frame, and the piston end of the cylinder is fixedly mounted with the same lifting plate, two guide holes are opened in the middle position of the lifting plate, and a door frame passing through the guide holes is fixedly mounted on the top of the three-jaw chuck.

[0010] Furthermore, the test assembly includes a pressure sensor fixedly installed in the middle position of the top of the lifting plate, and a pressing head fixedly installed in the middle position of the top of the portal frame, the bottom of the pressing head fits with the top of the pressure sensor, a controller fixedly installed on one side of the upper support frame, and a display screen fixedly installed on one side of the controller, and the display screen, controller and pressure sensor are electrically connected.

[0011] Furthermore, fixed plates are fixed on both sides of the portal frame, and springs are fixed between the bottom of the fixed plate and the top of the lifting plate.

[0012] Furthermore, both ends of the lifting plate are provided with limiting holes, and both sides of the inner wall of the upper support frame are fixed with guide rods passing through the limiting holes, and the bottom of the upper support frame is fixedly installed with a lower support frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model adopts a clamping assembly and a three-jaw chuck to fix the concrete test block and the test steel bar respectively, so as to ensure the stability of the test component. The height of the test component is adjusted by the lifting assembly, and the tensile strength of the anchoring glue is measured by observing whether the pressure indication on the display screen has a large change, and the operation is convenient.

[0015] The utility model fixes the test steel bar on the concrete test block by means of the anchoring glue, and uses the cooperation of the concrete test block, the test steel bar and the glue injection tube to perform tensile testing on the bonding area of ​​the test area, thereby directly performing tensile testing on the bonding area of ​​the anchoring glue, making the test data more effective and ensuring the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1The figure is a schematic diagram of the overall structure of a device for testing the tensile strength of rebar glue.

[0017] Figure 2 This is a schematic diagram of the concrete test block and test trough structure of a reinforcement glue tensile strength testing device.

[0018] Figure 3 This is a schematic diagram of the disassembly port and injection tube structure of a rebar glue tensile strength testing device.

[0019] Figure 4 The present invention is a schematic diagram of the portal frame and three-jaw chuck structure of a rebar adhesive tensile strength testing device.

[0020] Figure 5 This is an expanded view of the lifting plate and three-jaw chuck of a rebar glue tensile strength testing device.

[0021] In the figure: 1. upper support frame; 2. lower support frame; 3. clamping plate; 4. knob; 5. threaded rod; 6. concrete test block; 7. test steel bar; 8. three-jaw chuck; 9. lifting plate; 10. guide rod; 11. cylinder; 12. pressure sensor; 13. controller; 14. display screen; 15. guide port; 16. test slot; 17. lifting sleeve; 18. disassembly port; 19. glue injection hose; 20. pressing head; 21. door frame; 22. fixing plate; 23. spring; 24. guide hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5In an embodiment of the utility model, a tensile strength testing device for rebar glue comprises an upper support frame 1, a concrete test block 6 is placed on the bottom inner wall of the upper support frame 1, and a clamping assembly for fixing the concrete test block 6 is arranged at the bottom of the upper support frame 1, a test slot 16 is provided on the top of the concrete test block 6, and a test steel bar 7 is inserted into the test slot 16, and rebar glue is injected into the test slot 16, a three-jaw chuck 8 for fixing the test steel bar 7 is arranged inside the upper support frame 1, and a lifting assembly is arranged on the top of the three-jaw chuck 8, and a test assembly is arranged in the middle position of the lifting assembly, the lifting assembly comprises a cylinder 11 fixedly mounted on both ends of the top inner wall of the upper support frame 1, and the piston end of the cylinder 11 is fixedly mounted with the same lifting plate 9, two guide holes 24 are arranged in the middle position of the lifting plate 9, and a portal frame 21 passing through the guide hole 24 is fixedly mounted on the top of the three-jaw chuck 8, and the test assembly comprises a fixedly mounted in the middle of the top of the lifting plate 9 The pressure sensor 12 is arranged at the position, and a pressing head 20 is fixedly installed at the middle position of the top of the portal frame 21, and the bottom of the pressing head 20 is in contact with the top of the pressure sensor 12. A controller 13 is fixedly installed on one side of the upper support frame 1, and a display screen 14 is fixedly installed on one side of the controller 13. The display screen 14, the controller 13 and the pressure sensor 12 are electrically connected. Fixed plates 22 are fixed on both sides of the portal frame 21, and springs 23 are fixed between the bottom of the fixed plates 22 and the top of the lifting plate 9. The height of the test assembly is adjusted by the lifting assembly, and the tensile strength of the anchor glue is measured by observing whether the pressure indication of the display screen 14 changes significantly. The operation is convenient, and the tensile test is performed on the bonding part of the test area by the cooperation of the concrete test block, the test steel bar 7 and the glue injection tube 19, so as to directly perform tensile test on the bonding area of ​​the anchor glue, so that the test data can be more effective and the test effect is guaranteed.

[0024] Specifically, the clamping assembly includes guide openings 15 opened at both ends of the bottom of the upper support frame 1, and the inside of the guide openings 15 is plugged with a clamping plate 3, the top of the clamping plate 3 is attached to the top surface of the concrete test block 6, a lifting sleeve 17 is fixed to the middle position of the bottom of the clamping assembly, and a threaded rod 5 is rotatably connected to the middle position of the bottom of the upper support frame 1, the outer wall of the threaded rod 5 is screwed to the inner wall of the lifting sleeve 17, and a knob 4 is fixed to the bottom of the threaded rod 5, a disassembly opening 18 is opened on one side of the middle position of the top of the clamping plate 3, and an inclined glue injection tube 19 is fixedly installed on one side of the disassembly opening 18, the knob 4 in the clamping assembly is used to drive the threaded rod 5 to rotate, and the height of the clamping plate 3 is adjusted, so as to fix the concrete test block 6, and the test steel bar 7 and the anchor glue are injected into the test groove 16 through the glue injection tube 19 to ensure the fixing performance of the concrete test block 6 and the test steel bar 7.

[0025] Specifically, limiting holes are provided at both ends of the lifting plate 9, and guide rods 10 passing through the limiting holes are fixed on both sides of the inner wall of the upper support frame 1. The lower support frame 2 is fixedly installed at the bottom of the upper support frame 1, and the stability of the lifting plate 9 during lifting is maintained by the guiding effect of the limiting holes and the guide rods 10.

[0026] The working principle of the utility model is as follows: before the test, the user opens a test groove 16 on the concrete test block 6 in advance, and then places the concrete test block 6 on the upper support frame 1, and uses the knob 4 in the clamping assembly to drive the threaded rod 5 to rotate, and adjusts the height of the clamping plate 3 to fix the concrete test block 6. The user injects the test steel bar 7 and the rebar embedding glue into the test groove 16 through the glue injection tube 19. After the rebar embedding glue is fixed for a period of time, the user uses the cylinder 11 in the lifting assembly to adjust the height of the lifting plate 9 so that the three-jaw chuck 8 is sleeved on the top of the test steel bar 7, and uses the three-jaw chuck 8 to fix the test steel bar 7. During the test, the user lifts the lifting plate 9 through the cylinder 11 in the lifting assembly, pulls the test steel bar 7 through the three-jaw chuck 8, and presses the pressure sensor 12 through the pressing head 20 to observe whether the pressure indication on the display screen 14 has a large change to measure the tensile strength of the rebar embedding glue, which is easy to operate.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A device for testing the tensile strength of a reinforcing steel bar adhesive, comprising an upper support frame (1), characterized in that: A concrete test block (6) is placed on the inner wall of the bottom of the upper support frame (1), and a clamping assembly for fixing the concrete test block (6) is arranged at the bottom of the upper support frame (1), a test slot (16) is opened at the top of the concrete test block (6), and a test steel bar (7) is inserted into the inside of the test slot (16), and steel bar embedding glue is injected into the test slot (16), a three-jaw chuck (8) for fixing the test steel bar (7) is arranged inside the upper support frame (1), and a lifting assembly is arranged on the top of the three-jaw chuck (8), and a test assembly is arranged in the middle of the lifting assembly.

2. A device for detecting tensile strength of reinforcing bar adhesive according to claim 1, characterized in that: The clamping assembly comprises guide openings (15) provided at both ends of the bottom of the upper support frame (1), and a clamping plate (3) is inserted into the guide openings (15), and the top of the clamping plate (3) is attached to the top surface of the concrete test block (6). A lifting sleeve (17) is fixed at the middle position of the bottom of the clamping assembly, and a threaded rod (5) is rotatably connected to the middle position of the bottom of the upper support frame (1), the outer wall of the threaded rod (5) is screwed to the inner wall of the lifting sleeve (17), and a knob (4) is fixed to the bottom of the threaded rod (5).

3. A device for detecting tensile strength of reinforcing bar adhesive according to claim 2, characterized in that: A disassembly opening (18) is provided at one side of the middle position of the top of the clamping plate (3), and an inclined glue injection tube (19) is fixedly installed at one side of the disassembly opening (18).

4. The device for detecting tensile strength of reinforcing bar adhesive according to claim 1, characterized in that: The lifting assembly comprises a cylinder (11) fixedly mounted on both ends of the inner wall of the top of the upper support frame (1), and a lifting plate (9) is fixedly mounted on the piston end of the cylinder (11), two guide holes (24) are provided in the middle of the lifting plate (9), and a portal frame (21) passing through the guide holes (24) is fixedly mounted on the top of the three-jaw chuck (8).

5. A device for detecting tensile strength of reinforcing bar adhesive according to claim 4, characterized in that: The test assembly comprises a pressure sensor (12) fixedly mounted at the middle position of the top of the lifting plate (9), and a pressing head (20) fixedly mounted at the middle position of the top of the door frame (21), the bottom of the pressing head (20) is in contact with the top of the pressure sensor (12), a controller (13) is fixedly mounted on one side of the upper support frame (1), and a display screen (14) is fixedly mounted on one side of the controller (13), and the display screen (14), the controller (13) and the pressure sensor (12) are electrically connected.

6. A device for detecting tensile strength of reinforcing bar adhesive according to claim 5, characterized in that: Fixed plates (22) are fixed on both sides of the door frame (21), and springs (23) are fixed between the bottom of the fixed plate (22) and the top of the lifting plate (9).

7. The device for detecting tensile strength of reinforcing bar adhesive according to claim 4, characterized in that: Limiting holes are provided at both ends of the lifting plate (9), and guide rods (10) passing through the limiting holes are fixed on both sides of the inner wall of the upper support frame (1), and a lower support frame (2) is fixedly mounted on the bottom of the upper support frame (1).

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