Bending resistance testing device for cold-formed thin-walled section steel

Abstract

The utility model provides a bending resistance testing device for cold-formed thin-walled section steel, which relates to the field of steel testing devices, is used for testing steel and comprises a shell, a positioning table is hinged to the right end of the shell, a pressure applying component is arranged in the left end of the shell, a plurality of hydraulic cylinders are symmetrically connected to the center of the shell up and down, and the hydraulic cylinders are hinged to the right end of the shell. The movable end of the hydraulic cylinder extends into the positioning table, the left end of the shell is connected with a frame, criss-cross steel wires are connected into the frame, the steel wires are in a grid shape, and rubber blocks are connected into steel wire grids. According to the bending resistance testing device for the cold-formed thin-walled section steel, a frame, steel wires and rubber blocks are arranged to form a blocking protective net cover. The to-be-tested steel is surrounded by the shell, the positioning table and the blocking protective net cover, the steel is isolated from the outside in the testing process, and therefore the protection effect is achieved. And damage to workers caused by steel bar breakage is avoided. And through cooperation of a rubber block and an elastic film, fragments generated by breakage are buffered, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of steel testing devices, specifically a bending resistance testing device for cold-formed thin-walled steel. Background Technology

[0002] With the development of modern industrial technology, houses can be manufactured in batches, much like machine production. Prefabricated house components are simply transported to the construction site and assembled. Currently, there are various types of steel, including cold-formed thin-walled steel, which requires sampling and testing after production.

[0003] When using a bending strength testing device to measure the bending strength of steel, the steel is prone to breakage and springing when bent to its limit. Since the testing work is exposed, the broken steel could easily injure nearby personnel. Furthermore, when bending one end of the steel, the force on the other end is easily shifted, affecting the accuracy of the test results. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a bending resistance testing device for cold-formed thin-walled steel sections, solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a bending resistance testing device for cold-formed thin-walled steel, which tests the steel, includes a shell, a positioning platform hinged to the right end of the shell, a pressure application component inside the left end of the shell, multiple hydraulic cylinders symmetrically connected vertically at the center of the shell, the movable ends of the hydraulic cylinders extending into the positioning platform, a frame connected to the left end of the shell, and crisscrossing steel wires connected inside the frame, the steel wires forming a mesh, and rubber blocks connected inside the steel wire mesh.

[0008] It also includes an elastic membrane, which is installed inside the housing and arranged horizontally, with an adhesive coating on the bottom of the elastic membrane.

[0009] The positioning platform is used to fix the end of the steel material, and the positioning platform covers two-thirds of the area of ​​the right port of the housing.

[0010] Preferably, the positioning platform has a sliding groove on the left side, and a base is connected to the center of the sliding groove. Two screws are symmetrically pivotally connected to the base. Two base plates are slidably fitted in the sliding groove. The base is located between the two base plates. The screws are horizontally threaded through the base plates. A motor is connected to the left side of the positioning platform, and the motor drive shaft is connected to the end of the screw.

[0011] Preferably, the pressure application assembly includes a pressure plate, a rack, an elastic diaphragm, and a pressure detection module. The pressure plate is U-shaped, with its bottom engaged with steel. The pressure detection module is located on the top of the pressure plate. The lower end of the rack is connected to the top of the pressure detection module, and the upper end of the rack extends vertically upward to the top of the housing. A drive gear is connected to the top of the housing, and the drive gear meshes with the rack.

[0012] Preferably, a bar is connected to the left side of the positioning platform, the right end of the housing is hinged to the bar, and a spring is connected between the two base plates.

[0013] (III) Beneficial Effects

[0014] This invention provides a bending resistance testing device for cold-formed thin-walled steel sections. It has the following beneficial effects:

[0015] 1. This bending resistance testing device for cold-formed thin-walled steel sections uses a frame, steel wire, and rubber blocks to form a protective barrier. The steel under test is surrounded by the shell, positioning platform, and protective barrier, isolating it from the outside environment during the test and thus providing protection. This prevents injury to workers from steel bar breakage. The rubber blocks and elastic membrane work together to cushion the fragments generated during breakage, improving safety.

[0016] 2. This bending resistance testing device for cold-formed thin-walled steel uses a base plate, motor, and screw to fix the steel, ensuring the base plate remains in close contact with the steel. It is suitable for steel of different sizes. The dual support of the base and hydraulic cylinder prevents the steel from shifting due to force when one end is bent, thus avoiding excessive testing errors. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 4 This is a partial structural diagram of the present invention;

[0021] Figure 5 This is a schematic diagram of the positioning platform structure of this utility model.

[0022] In the diagram: 1. Housing, 11. Drive gear, 2. Positioning platform, 21. Rod, 22. Base, 23. Base plate, 24. Motor, 25. Screw, 26. Spring, 3. Hydraulic cylinder, 4. Frame, 41. Steel wire, 42. Rubber block, 5. Pressure plate, 6. Rack, 7. Elastic diaphragm, 8. Pressure detection module. Detailed Implementation

[0023] This utility model embodiment provides a bending resistance testing device for cold-formed thin-walled steel sections, such as... Figure 1-5 As shown, the steel is being tested. The test includes a housing 1, with a positioning platform 2 hinged to the right end of the housing 1. A pressure-applying component is located inside the left end of the housing 1. Multiple hydraulic cylinders 3 are symmetrically fixed at the center of the housing 1, with their movable ends extending into the positioning platform 2. The diameter of the left end of the housing 1 is larger than that of the right end, which facilitates applying pressure to the left end of the steel bar to bend it.

[0024] A frame 4 is fixedly installed at the left end of the shell 1. Intersecting steel wires 41 are welded inside the frame 4, forming a mesh. Rubber blocks 42 are fixedly installed within the mesh of steel wires 41. The frame 4, steel wires 41, and rubber blocks 42 together form a barrier protective net.

[0025] It also includes an elastic membrane 7, which is fixedly installed inside the housing 1 and arranged horizontally. The bottom of the elastic membrane 7 is coated with an adhesive layer, as shown in the attached figure. Figure 3 As shown. The steel is installed below the elastic membrane 7.

[0026] Positioning platform 2 is used to fix the end of the steel material, and positioning platform 2 covers two-thirds of the area of ​​the right port of housing 1.

[0027] During operation, the steel is inserted into housing 1, and positioning platform 2 is flipped so that it supports the right end of the main steel. Then, hydraulic cylinder 3 extends to support and clamp the middle section of the steel. The pressure application component descends and contacts the left end of the steel. A protective mesh cover is then installed on the left end of housing 1. The pressure application component then begins to work, applying pressure to the left end of the steel to conduct a bending resistance test.

[0028] When the steel reaches its limit of stress and fractures, the resulting fragments impact the protective mesh. The fragments embed themselves in the rubber block 42, which acts as a buffer, reducing the impact force. The elastic membrane 7 and the adhesive coating work together to provide cushioning and facilitate the collection of fragments.

[0029] A sliding groove is provided on the left side of the positioning table 2. A base 22 is welded to the center of the sliding groove. Two screws 25 are symmetrically pivotally connected to the base 22. Two base plates 23 are slidably fitted in the sliding groove. The base 22 is located between the two base plates 23. The screws 25 are horizontally threaded through the base plates 23. A motor 24 is fixedly installed on the left side of the positioning table 2. The drive shaft of the motor 24 is welded to the end of the screws 25.

[0030] The positioning platform 2 is vertically flipped so that it is close to the housing 1. The base plate 23 is then inserted into the housing 1, and the steel is inserted from the left end of the housing 1. The upper end of the base plate 23 is engaged with the steel. The position of the base plate 23 is adjusted by the motor 24 and the screw 25, thus making it suitable for steel of different sizes.

[0031] The pressure application assembly includes a pressure plate 5, a rack 6, an elastic diaphragm 7, and a pressure detection module 8. The pressure plate 5 is U-shaped, with its bottom snapped into the steel. The pressure detection module 8 is fixedly installed on the top of the pressure plate 5. The lower end of the rack 6 is fixedly installed on the top of the pressure detection module 8, and the upper end of the rack 6 extends vertically upward to the top of the housing 1. A drive gear 11 is fixedly installed on the top of the housing 1, and the drive gear 11 meshes with the rack 6.

[0032] A bar 21 is welded to the left side of the positioning platform 2, and the right end of the housing 1 is hinged to the bar 21. A spring 26 connects the two base plates 23. The spring 26 is always in a compressed state, and the elasticity of the spring 26 improves the firmness between the base plates 23. This prevents the upper ends of the two base plates 23 from being forced together during the test, ensuring that the base plates 23 remain in a vertical state.

[0033] In summary, this bending resistance testing device for cold-formed thin-walled steel sections establishes a protective barrier consisting of a frame 4, steel wire 41, and rubber blocks 42. The steel under test is enclosed by the shell 1, positioning platform 2, and protective barrier, isolating it from the external environment during the test and thus providing protection. This prevents injury to workers from steel bar breakage. The rubber blocks 42 and elastic membrane 7 work together to cushion the fragments generated during breakage, improving safety.

[0034] Furthermore, the steel is fixed in place by the cooperation of the base plate 23, motor 24, and screw 26, ensuring that the base plate 23 is always in contact with the steel, which is suitable for steel of different sizes. The double support of the base 23 and hydraulic cylinder 3 prevents the other end from shifting due to force when one end of the steel is bent, thus avoiding large test errors.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending resistance testing device for cold-formed thin-walled steel, used to test steel, characterized in that: Includes a housing (1), a positioning platform (2) is hinged to the right end of the housing (1), a pressure application component is provided inside the left end of the housing (1), and multiple hydraulic cylinders (3) are symmetrically connected at the center of the housing (1). The movable end of the hydraulic cylinder (3) extends into the positioning platform (2). A frame (4) is connected to the left end of the housing (1), and crisscrossing steel wires (41) are connected inside the frame (4). The steel wires (41) are in a grid shape, and rubber blocks (42) are connected inside the grid of steel wires (41). It also includes an elastic membrane (7), which is installed inside the housing (1) and is arranged horizontally. The bottom of the elastic membrane (7) is coated with an adhesive coating. The positioning platform (2) is used to fix the end of the steel material, and the positioning platform (2) covers two-thirds of the area of ​​the right port of the housing (1).

2. The bending resistance testing device for cold-formed thin-walled steel according to claim 1, characterized in that: The positioning platform (2) has a sliding groove on its left side, and a base (22) is connected to the center of the sliding groove. Two screws (25) are symmetrically pivotally connected to the base (22). Two base plates (23) are slidably fitted in the sliding groove. The base (22) is located between the two base plates (23). The screws (25) are horizontally threaded through the base plates (23). A motor (24) is connected to the left side of the positioning platform (2). The drive shaft of the motor (24) is connected to the end of the screws (25).

3. The bending resistance testing device for cold-formed thin-walled steel according to claim 2, characterized in that: The pressure application assembly includes a pressure plate (5), a rack (6), an elastic membrane (7), and a pressure detection module (8). The pressure plate (5) is U-shaped, and the bottom of the pressure plate (5) is snapped into the steel. The pressure detection module (8) is set on the top of the pressure plate (5). The lower end of the rack (6) is connected to the top of the pressure detection module (8), and the upper end of the rack (6) extends vertically upward to the top of the housing (1). The top of the housing (1) is connected to a drive gear (11), which meshes with the rack (6).

4. The bending resistance testing device for cold-formed thin-walled steel according to claim 3, characterized in that: The positioning platform (2) is connected to a bar (21) on the left side, and the right end of the housing (1) is hinged to the bar (21). A spring (26) is connected between the two base plates (23).

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