A tooling for steel fiber tensile test

Abstract

The utility model relates to metal product testing device field discloses a kind of tool for steel fiber tensile test, including base, the upper surface of the base is slidably connected with mounting seat, the upper surface of the mounting seat is fixedly connected with support block, the inner wall of the support block is equipped with installation groove, the inner wall of the installation groove is slidably connected with fixed block, the top of the fixed block is provided with stable extrusion assembly, the upper surface of the mounting seat is fixedly connected with mounting block, the inner wall of the mounting block is provided with threaded push rod.In the utility model, by setting fixed block and support block, stable extrusion assembly of cooperation can let fixed block stable synchronous clamping, when being stretched test to stable clamping steel fiber, the inclined surface of fixed block and support block contact converts part friction into normal pressure perpendicular to inclined surface, so that fixed block is further pressed steel fiber, avoid steel fiber to fall off in the process of stretching due to insufficient friction, improve the practicality of device.

Description

Technical Field

[0001] This utility model relates to the field of metal product testing devices, and in particular to a tooling for steel fiber tensile testing. Background Technology

[0002] Steel fiber refers to fibers with an aspect ratio (the ratio of fiber length to its diameter; when the fiber cross-section is non-circular, the diameter of the equivalent cross-sectional area is used) of 40 to 80, produced by cutting fine steel wires, shearing cold-rolled strip steel, milling steel ingots, or rapidly cooling molten steel.

[0003] In steel fiber tensile testing, suitable fixtures are required to assist in the test. When existing fixtures clamp steel fibers, because the steel fibers are relatively thin, if the clamping force is too large, the stress will concentrate near the end of the specimen, causing the steel fibers to break near the end during the test and the true results cannot be obtained. If the clamping force is too low, the steel fibers will fall off before the results are obtained, affecting the tensile test results. Therefore, a fixture for steel fiber tensile testing is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a tooling for steel fiber tensile testing, which aims to solve the problems in the prior art where "if the clamping force of the steel fiber is too large, the stress will be concentrated near the end of the sample, causing the steel fiber to break near the end during the test and the true result cannot be obtained; if the clamping force is too low, the steel fiber will fall off before the result is obtained, affecting the tensile test result".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tooling for steel fiber tensile testing, comprising a base, a mounting seat slidably connected to the upper surface of the base, a support block fixedly connected to the upper surface of the mounting seat, an installation groove formed in the inner wall of the support block, a fixing block slidably connected to the inner wall of the installation groove, a stabilizing extrusion assembly disposed on the top of the fixing block, an installation block fixedly connected to the upper surface of the mounting seat, a threaded push rod disposed on the inner wall of the installation block, the stabilizing extrusion assembly comprising a stabilizing frame, the stabilizing frame fixedly connected to the top of the support block, a sliding groove formed in the inner wall of the stabilizing frame, a stabilizing block slidably connected to the inner wall of the sliding groove, a limiting groove formed in the inner wall of the stabilizing block, a limiting block slidably connected to the inner wall of the limiting groove, and a push plate fixedly connected to the outer wall of the stabilizing block.

[0006] As a further description of the above technical solution: A support frame is fixedly connected to the outer wall of the mounting base, and the support frame is V-shaped.

[0007] As a further description of the above technical solution: The stabilizing block is shaped like an I-beam, and the sliding groove is shaped like an L-beam.

[0008] As a further description of the above technical solution: The mounting groove is inclined, the contact surface between the fixing block and the support block is inclined, and multiple sets of support blocks and fixing blocks are provided, with the multiple sets of support blocks and fixing blocks symmetrically arranged about the center line of the mounting base as the axis of symmetry.

[0009] As a further description of the above technical solution: One end of the threaded push rod is fixedly connected to a rotating wheel, and the other end of the threaded push rod is rotatably connected to a pressing block.

[0010] As a further description of the above technical solution: The mounting base is provided in multiple sets, and the multiple sets of mounting bases are symmetrically arranged with the center line of the base as the axis of symmetry.

[0011] As a further description of the above technical solution: The limiting block is fixedly connected to the top of the fixing block, and the pushing plate is snapped into the outer wall of the squeezing block.

[0012] As a further description of the above technical solution: A baffle is slidably connected to the outer wall of the support block, and the support block and the baffle are elastically connected by a spring.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by setting a fixed block and a support block, and cooperating with a stable extrusion component that can stably and synchronously clamp the fixed block, when the steel fiber is stably clamped for tensile testing, the inclined surface of the fixed block and the support block in contact converts part of the frictional force into a normal pressure perpendicular to the inclined surface, so that the fixed block further compresses the steel fiber, preventing the steel fiber from falling off due to insufficient friction during the stretching process, thus improving the practicality of the device.

[0014] 2. In this utility model, by setting a stop block and an installation groove, when the fixing block needs to be replaced, the spring force is overcome to pull the stop plate outward, releasing the enclosure of the installation groove. When the stabilizing block is lifted up along the vertical section of the L-shaped sliding groove, the fixing block 6 can be taken out, realizing the quick replacement of fixing blocks that are compatible with steel fibers of different specifications, thus improving the use effect of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model; Figure 2 This is a three-dimensional structural breakdown diagram of the stabilizer, support block, and mounting block in this utility model; Figure 3This is a three-dimensional structural breakdown diagram of the fixing block and the supporting block in this utility model; Figure 4 This is a three-dimensional structural diagram of the threaded push rod and the stabilizing block in this utility model.

[0016] Legend: 1. Base; 2. Mounting base; 3. Support block; 4. Mounting groove; 5. Stabilizing extrusion assembly; 51. Stabilizing frame; 52. Sliding groove; 53. Stabilizing block; 54. Restricting groove; 55. Restricting block; 56. Push plate; 6. Fixing block; 7. Mounting block; 8. Threaded push rod; 9. Support frame; 10. Rotating wheel; 11. Extrusion block; 12. Baffle; 13. Spring. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a fixture for steel fiber tensile testing, comprising a base 1 for mounting a mounting seat 2, a mounting seat 2 for mounting and fixing other components slidably connected to the upper surface of the base 1, a support block 3 for restricting a fixing block 6 to compress and clamp the steel fiber fixedly connected to the upper surface of the mounting seat 2, an installation groove 4 for allowing the fixing block 6 to slide against the inner wall of the support block 3, a fixing block 6 for compressing and clamping the steel fiber slidably connected to the inner wall of the installation groove 4, a stabilizing compression component 5 provided on the top of the fixing block 6, the stabilizing compression component 5 for allowing symmetrically arranged fixing blocks 6 to compress the steel fiber synchronously and stably, avoiding misalignment between the fixing blocks 6, and a mounting block 7 for mounting a threaded push rod 8 fixedly connected to the upper surface of the mounting seat 2. The inner wall of 7 is provided with a threaded push rod 8 for pushing the fixed block 6 to squeeze the steel fiber. The stabilizing extrusion assembly 5 includes a stabilizing frame 51 for making the stabilizing block 53 move smoothly. The stabilizing frame 51 is fixedly connected to the top of the support block 3 and is supported and fixed by the support block 3. The inner wall of the stabilizing frame 51 is provided with a sliding groove 52 for making the stabilizing block 53 slide. The inner wall of the sliding groove 52 is slidably connected with a stabilizing block 53 for limiting the limiting block 55. The inner wall of the stabilizing block 53 is provided with a limiting groove 54 for making the limiting block 55 move parallel. The inner wall of the limiting groove 54 is slidably connected with a limiting block 55. When the limiting block 55 is driven to move by the stabilizing block 53, it can only move horizontally on the inner wall of the limiting groove 54 to avoid the fixed block 6 from being staggered. The outer wall of the stabilizing block 53 is fixedly connected with a push plate 56 for pushing the fixed block 6.

[0019] Reference Figure 1 , Figure 2 and Figure 4 The outer wall of the mounting base 2 is fixedly connected to a support frame 9 for supporting the steel fiber. The support frame 9 is V-shaped, which can keep the supported steel fiber in a vertical and centered position, improving the accuracy of clamping and fixing the fixing block 6. One end of the threaded push rod 8 is fixedly connected to a rotating wheel 10 for easy rotation of the threaded push rod 8. The other end of the threaded push rod 8 is rotatably connected to an extrusion block 11 for pushing the push plate 56. When pushing the push plate 56, it can simultaneously drive the fixing block 6 and other parts of the stable extrusion assembly 5. The outer wall of the support block 3 is slidably connected to a baffle 12 to prevent the fixing block 6 from sliding out of the mounting groove 4. When it is necessary to replace different types of fixing blocks 6, the baffle 12 can be opened to take out the fixing block 6 to be replaced from the mounting groove 4 and then replace it with a new fixing block 6. The support block 3 and the baffle 12 are elastically connected by a spring 13. The spring 13 keeps the baffle 12 in a restrictive state on the fixing block 6.

[0020] Reference Figure 2 , Figure 3 and Figure 4The limiting block 55 is fixedly connected to the top of the fixing block 6 and supported by the fixing block 6. The pushing plate 56 is snapped onto the outer wall of the extrusion block 11, allowing the extrusion block 11 to drive the pushing plate 56 to move. The stabilizing block 53 is shaped like an I-beam to ensure that it remains perpendicular to the stabilizing frame 51 during movement. The sliding groove 52 is L-shaped, allowing it to be lifted upwards when the fixing block 6 is replaced, thus releasing the restriction on the fixing block 6. The mounting groove 4 is inclined, allowing the fixing blocks 6 to move closer together to complete the extrusion of the steel fiber when pushed. The contact surface between the fixing block 6 and the supporting block 3 is inclined, ensuring that the steel fiber is extruded. When the fixed block 6 is subjected to tension from friction with the steel fiber, the inclined surface will convert part of the tension into a compressive force on the fixed block 6 and the steel fiber, thereby making the fixed block 6 clamp tighter when the steel fiber is stretched. Multiple sets of support blocks 3 and fixed blocks 6 are provided. Multiple sets of support blocks 3 and fixed blocks 6 are symmetrically arranged about the center line of the mounting base 2 as the axis of symmetry. The support blocks 3 are arranged opposite each other by the inclined surface so that the fixed blocks 6 move away from or closer to each other when moving. Multiple sets of mounting base 2 are provided. Multiple sets of mounting base 2 are symmetrically arranged about the center line of the base 1 as the axis of symmetry, which allows the tooling to clamp both ends of the steel fiber for tensile testing.

[0021] Working principle: During use, the steel fiber to be tested is placed on the symmetrically arranged V-shaped support frame 9 and pushed towards the inside of the fixed block 6. Its V-shaped structure ensures that the steel fiber is automatically centered. Then, the rotating wheel 10 drives the threaded push rod 8 to advance axially, which drives the extrusion block 11 to push the push plate 56 of the stabilizing extrusion assembly 5. The movement of the push plate 56 causes the I-shaped stabilizing block 53 to slide horizontally along the sliding groove 52 of the stabilizing frame 51. At the same time, the limiting groove 54 drives the limiting block 55 to move parallel. Since the limiting block 55 is fixed to the top of the fixed block 6, the fixed block 6 slides in the mounting groove 4 along the inclined surface towards the center, realizing symmetrical extrusion of the steel fiber. The sliding cooperation between the limiting groove 54 and the limiting block 55 constrains the fixed block 6 to move only horizontally, avoiding misalignment. The symmetrically arranged fixed blocks 6 synchronously retract under the guidance of the inclined mounting groove 4 to ensure uniform distribution of clamping force. After the tensile test is started... When the steel fiber is subjected to axial tension, it generates friction with the fixed block 6. At this time, the inclined surface of the fixed block 6 in contact with the support block 3 converts part of the friction into a normal pressure perpendicular to the inclined surface, which makes the fixed block 6 further press the steel fiber, forming a self-locking effect. The clamping force increases with the increase of the tensile load, which prevents the steel fiber from falling off due to insufficient friction during the stretching process. When the fixed block 6 needs to be replaced, the baffle 12 is pulled outward to overcome the elastic force of the spring 13, and the enclosure of the mounting groove 4 is released. When the stabilizing block 53 is lifted along the vertical section of the L-shaped sliding groove 52, the fixed block 6 is taken out, realizing the quick replacement of clamping blocks adapted to different specifications of steel fibers. The symmetrically distributed mounting seats 2 clamp the two ends of the steel fiber synchronously and are connected to the testing machine through the base 1. During the stretching process, the stabilizing extrusion component 5 maintains the synchronous movement of the fixed block 6. The mechanical conversion of the inclined contact surface continuously enhances the clamping reliability and ensures the accuracy of the test data.

[0022] 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 tooling for steel fiber tensile testing comprising a base (1), characterized in that: The upper surface of the base (1) is slidably connected to the mounting seat (2), the upper surface of the mounting seat (2) is fixedly connected to the support block (3), the inner wall of the support block (3) is provided with the mounting groove (4), the inner wall of the mounting groove (4) is slidably connected to the fixing block (6), the top of the fixing block (6) is provided with the stabilizing extrusion component (5), the upper surface of the mounting seat (2) is fixedly connected to the mounting block (7), the inner wall of the mounting block (7) is provided with the threaded push rod (8); The stabilizing extrusion assembly (5) includes a stabilizing frame (51), which is fixedly connected to the top of the support block (3). The inner wall of the stabilizing frame (51) is provided with a sliding groove (52), and a stabilizing block (53) is slidably connected to the inner wall of the sliding groove (52). The inner wall of the stabilizing block (53) is provided with a limiting groove (54), and a limiting block (55) is slidably connected to the inner wall of the limiting groove (54). A pusher plate (56) is fixedly connected to the outer wall of the stabilizing block (53).

2. A tooling for steel fiber tensile testing according to claim 1, characterized in that: The outer wall of the mounting base (2) is fixedly connected to a support frame (9), and the support frame (9) is V-shaped.

3. A device for steel fiber tensile testing according to claim 1, characterized in that: The stabilizing block (53) is shaped like an I-beam, and the sliding groove (52) is shaped like an L-beam.

4. The tooling for steel fiber tensile testing according to claim 1, characterized in that: The mounting groove (4) is set in an inclined shape, the contact surface between the fixing block (6) and the support block (3) is set in an inclined shape, and multiple sets of the support block (3) and the fixing block (6) are provided. The multiple sets of the support block (3) and the fixing block (6) are symmetrically arranged with the center line of the mounting base (2) as the axis of symmetry.

5. The tooling for steel fiber tensile testing according to claim 1, characterized in that: One end of the threaded push rod (8) is fixedly connected to a rotating wheel (10), and the other end of the threaded push rod (8) is rotatably connected to a pressing block (11).

6. The tooling for steel fiber tensile testing according to claim 1, characterized in that: The mounting base (2) is provided in multiple sets, and the multiple sets of mounting bases (2) are symmetrically arranged with the center line of the base (1) as the axis of symmetry.

7. The tooling for steel fiber tensile testing according to claim 1, characterized in that: The limiting block (55) is fixedly connected to the top of the fixing block (6), and the push plate (56) is snapped onto the outer wall of the squeezing block (11).

8. The tooling for steel fiber tensile testing according to claim 1, characterized in that: The outer wall of the support block (3) is slidably connected to a baffle (12), and the support block (3) and the baffle (12) are elastically connected by a spring (13).

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