A tensile testing device for building materials

Abstract

This utility model discloses a tensile testing device for building materials, belonging to the field of building material testing technology. It includes a main structure and a protective structure. The main structure includes a base and a top plate. A support frame is fixedly connected between the base and the top plate. Hydraulic cylinders are symmetrically installed at the bottom of the top plate. A crossbeam is fixedly connected to the piston rod of the hydraulic cylinder. A fixing sleeve is fitted onto the outer side of the crossbeam, and an upper clamp is fixedly connected to the bottom of the fixing sleeve. This utility model uses an infrared receiver to receive point-like laser light emitted by an infrared transmitter. The deformation of the crossbeam is confirmed based on the receiving state of the infrared receiver. When the crossbeam deforms, the infrared receiver cannot align with the infrared transmitter, allowing monitoring of the crossbeam deformation under high loads and preventing eccentric tensile testing of the sample. An electric guide rail is installed on the crossbeam for lateral drive of the fixing sleeve, facilitating the simulation of composite forces during vertical tensile testing by providing lateral force.

Description

Technical Field

[0001] This utility model specifically relates to a tensile testing device for building materials, belonging to the field of building materials testing technology. Background Technology

[0002] In the field of modern construction engineering, ensuring the quality of building materials is crucial to ensuring the safety and durability of buildings. Traditional building material testing methods rely heavily on manual operation and experience-based judgment. This method is not only time-consuming and labor-intensive, but the accuracy of the measurement results is often affected by the operator's experience. In addition, with the continuous emergence of new building materials, traditional testing methods can no longer meet the requirements of diversity and high precision. In recent years, with the development of automation and intelligent technology, tensile testing devices have been widely used as an important means of testing building materials.

[0003] Current tensile testing equipment on the market cannot effectively monitor frame deformation under high loads when conducting material testing. Frame deformation may cause eccentric tension on the specimen, thus affecting the accuracy of the test results. This directly limits its application in some application scenarios that require high-precision testing. In addition, most existing tensile testing equipment can only simulate the force in a single direction and cannot truly simulate the complex force state in actual working conditions.

[0004] To address the aforementioned technical issues, a tensile testing device for building materials is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a tensile testing device for building materials, which can monitor the deformation of the crossbeam under high loads, prevent eccentric tension of the sample, and provide lateral force for composite stress simulation.

[0006] A tensile testing device for building materials includes a main body and a protective mechanism. The main body includes a base and a top plate. A support frame is fixedly connected between the base and the top plate. Hydraulic cylinders are symmetrically installed at the bottom of the top plate. A crossbar is fixedly connected to the piston rod of the hydraulic cylinder. A fixing sleeve is fitted on the outer side of the crossbar. An upper clamp is fixedly connected to the bottom of the fixing sleeve. A lower clamp is fixedly connected to the top of the base. Electric guide rails are installed on both sides of the crossbar. The movable end of the electric guide rail is fixedly connected to the fixing sleeve. A fixing plate is symmetrically fixedly connected to one side of the crossbar. An infrared transmitter and an infrared receiver are respectively installed on the adjacent sides of the two fixing plates.

[0007] Furthermore, the protective mechanism includes a front baffle, side baffles and a rear baffle. The front baffle is hinged to one side of the support frame, the two side baffles are symmetrically fixed to both sides of the support frame, and the rear baffle is fixedly connected to the rear side of the support frame.

[0008] Furthermore, cameras are installed at equal intervals on one side of the support frame.

[0009] Furthermore, protective plates are fixedly connected to one side of the support frame at equal intervals.

[0010] Furthermore, a tension sensor is installed at the connection between the hydraulic cylinder and the crossbeam.

[0011] Furthermore, two fixing rods are fixedly connected between the base and the top plate, and the fixing rods pass through the cross frame and are slidably connected to the cross frame.

[0012] Beneficial effects:

[0013] This invention uses an infrared receiver to receive point laser light emitted by an infrared transmitter. The deformation of the crossbeam is confirmed based on the reception status of the infrared receiver. When the crossbeam deforms, the infrared receiver cannot align with the infrared transmitter. This allows for monitoring of the crossbeam deformation under high loads, preventing eccentric stretching of the sample. An electric guide rail is installed on the crossbeam to drive the fixing sleeve laterally, facilitating the simulation of composite forces by providing lateral force during vertical stretching. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure of the base in this utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure of the crossbar in this utility model;

[0017] Figure 4 This is a schematic diagram of the installation structure of the support frame in this utility model;

[0018] Figure 5 This is a schematic diagram of the camera installation structure in this utility model.

[0019] In the diagram: 10. Main body; 11. Base; 12. Support frame; 13. Top plate; 14. Hydraulic cylinder; 15. Fixing rod; 16. Cross frame; 17. Fixing sleeve; 18. Upper clamp; 19. Lower clamp; 31. Fixing plate; 32. Infrared transmitter; 33. Infrared receiver; 34. Electric guide rail; 35. Tension sensor; 36. Protective plate; 37. Camera; 20. Protective mechanism; 21. Front baffle; 22. Side baffle; 23. Rear baffle. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 As shown, a tensile testing device for building materials consists of a main body 10 and a protective mechanism 20.

[0022] The main structure 10 includes a base 11 and a top plate 13. A support frame 12 is fixedly connected between the base 11 and the top plate 13. Hydraulic cylinders 14 are symmetrically installed at the bottom of the top plate 13. A cross frame 16 is fixedly connected to the piston rod of the hydraulic cylinder 14. A fixing sleeve 17 is fitted on the outside of the cross frame 16. An upper clamp 18 is fixedly connected to the bottom of the fixing sleeve 17. A lower clamp 19 is fixedly connected to the top of the base 11. Electric guide rails 34 are installed on both sides of the cross frame 16. The movable end of the electric guide rail 34 is fixedly connected to the fixing sleeve 17. A fixing plate 31 is symmetrically fixedly connected to one side of the cross frame 16. The two fixing plates 31 are adjacent on one side. An infrared transmitter 32 and an infrared receiver 33 are installed on the base 11. The infrared transmitter 32 is model LM90553D6-CU and the infrared receiver 33 is model WH0038K. An integrated switch group is located on one side of the base 11 to control the infrared transmitter 32, the infrared receiver 33, the electric guide rail 34 and the hydraulic cylinder 14. The switch group is connected to an external mains power supply or a portable power supply to power the infrared transmitter 32, the infrared receiver 33, the electric guide rail 34 and the hydraulic cylinder 14. A tension sensor 35 is installed at the connection between the hydraulic cylinder 14 and the crossbeam 16.

[0023] As a technical optimization of this utility model, in order to observe the crack propagation process in a timely manner, cameras 37 are installed at equal intervals on one side of the support frame 12, and protective plates 36 are fixedly connected at equal intervals on one side of the support frame 12. The protective plates 36 are transparent and protect the cameras 37 to prevent the fragments generated during the crack from damaging the cameras 37.

[0024] As a technical optimization of this utility model, in order to enhance the stability of the cross frame 16 when it moves, two fixing rods 15 are fixedly connected between the base 11 and the top plate 13. The fixing rods 15 pass through the cross frame 16 and are slidably connected to the cross frame 16.

[0025] As a technical optimization of this utility model, both the upper clamp 18 and the lower clamp 19 are composed of a fixed frame, two clamping plates and two screws. The screws are symmetrically threaded on the fixed frame, and one end of the screw is rotatably connected to the clamping plate. Anti-slip pads are provided on the contact surface between the clamping plate and the sample, and the clamping plate is slidably connected to the fixed frame.

[0026] The protective mechanism 20 includes a front baffle 21, side baffles 22 and a rear baffle 23. The front baffle 21 is hinged to one side of the support frame 12. The two side baffles 22 are symmetrically fixed to both sides of the support frame 12. The rear baffle 23 is fixedly connected to the rear side of the support frame 12. The front baffle 21, side baffles 22 and rear baffle 23 are all made of transparent tempered glass. The front baffle 21 is equipped with a door lock structure to prevent the front baffle 21 from being accidentally opened during the test.

[0027] Working principle: Open the front baffle 21, connect the bottom of the sample to the lower clamp 19, and connect the top to the upper clamp 18. In the initial state, the upper clamp 18 and the lower clamp 19 are aligned and symmetrically set. Close the front baffle 21. The internal sample state can be observed through the front baffle 21, side baffle 22 and rear baffle 23. The camera 37 records the crack propagation process of the sample. Start the hydraulic cylinder 14 to pull the crossbeam 16 upward to stretch the sample. During the stretching process, the electric guide rail 34 can be started to drive the fixed sleeve 17 to move laterally, thereby giving the sample a lateral force to simulate a composite stress condition. When the crossbeam 16 deforms due to high load, the infrared receiver 33 and the infrared transmitter 32 are offset, which causes the infrared receiver 33 to be unable to receive the laser emitted by the infrared transmitter 32. When the infrared receiver 33 cannot receive the laser, the test is stopped in time, and the deformed crossbeam 16 is maintained to prevent the deformation from causing the sample to be stretched eccentrically.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tensile testing device for building materials, comprising a main body (10) and a protective mechanism (20), characterized in that: The main structure (10) includes a base (11) and a top plate (13). A support frame (12) is fixedly connected between the base (11) and the top plate (13). A hydraulic cylinder (14) is symmetrically installed at the bottom of the top plate (13). A cross frame (16) is fixedly connected to the piston rod of the hydraulic cylinder (14). A fixing sleeve (17) is fitted on the outside of the cross frame (16). An upper clamp (18) is fixedly connected to the bottom of the fixing sleeve (17). A lower clamp (19) is fixedly connected to the top of the base (11). Electric guide rails (34) are installed on both sides of the cross frame (16). The movable end of the electric guide rail (34) is fixedly connected to the fixing sleeve (17). A fixing plate (31) is symmetrically fixedly connected to one side of the cross frame (16). An infrared transmitter (32) and an infrared receiver (33) are respectively installed on the adjacent side of the two fixing plates (31).

2. The building material detection tensile test apparatus of claim 1, wherein: The protective mechanism (20) includes a front baffle (21), a side baffle (22) and a rear baffle (23). The front baffle (21) is hinged to one side of the support frame (12), the two side baffles (22) are symmetrically fixed to both sides of the support frame (12), and the rear baffle (23) is fixedly connected to the rear side of the support frame (12).

3. The building material detection tensile test apparatus of claim 1, wherein: Cameras (37) are installed at equal intervals on one side of the support frame (12).

4. The building material detection tensile test apparatus of claim 1, wherein: Protective plates (36) are fixedly connected at equal intervals on one side of the support frame (12).

5. The building material detection tensile test apparatus of claim 1, wherein: A tension sensor (35) is installed at the connection between the hydraulic cylinder (14) and the crossbeam (16).

6. The building material detection tensile test apparatus of claim 1, wherein: Two fixing rods (15) are fixedly connected between the base (11) and the top plate (13). The fixing rods (15) pass through the cross frame (16) and are slidably connected to the cross frame (16).

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