Steel pipe bending test clamp
By designing a steel pipe bending test fixture including limiting parts, slot sliders, small bending molds, large bending molds and fixed rods, the problem of poor applicability of the existing technology to seamless steel pipes is solved, and steel pipes of different diameters are realized The precise loading and efficient bending test improves test efficiency and data accuracy.
Patent Information
- Application Number
- CN202420665160.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-02
AI Technical Summary
The existing three-point bending test fixtures have poor applicability, especially for seamless steel pipes with circular cross-sections, making it difficult to achieve precise loading and efficient testing.
A steel pipe bending test fixture was designed, including limiting parts, slot sliders, small bending molds, large bending molds and fixing rods. Through the cooperation of large bending molds and small bending molds, the adaptation of seamless steel pipes of different diameters is achieved. With a simple structure and easy manufacturing and maintenance.
It improves the test efficiency and data accuracy, expands the scope of application, realizes bending tests for steel pipes of different specifications, and is adjustable, making it convenient for tests of different specifications.
Smart Images
Figure CN222212466U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical property testing of metal materials, in particular to a steel pipe bending test fixture. Background Art
[0002] In the mechanical property test of metal materials, the three-point bending test is a common test method. Its principle is to place the sample on two supporting points with a certain distance, and apply a downward load to the sample at the midpoint of the two supporting points. When the three contact points of the sample form two equal moments, three-point bending occurs, and the sample will be bent into different angles around the large bending die at the midpoint.
[0003] However, most of the existing three-point bending test fixtures are designed for plates or bars, and their applicability to seamless steel pipes with circular cross-sections is poor. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a steel pipe bending test fixture with simple structure and convenient operation, so as to improve the test efficiency and data accuracy.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a steel pipe bending test fixture, comprising a first part and a second part, the first part comprising a limiting member, a slot slider arranged on the limiting member and a small bending die arranged on the slot slider, a slide groove is provided on the top of the limiting member, two slot sliders are arranged in the slide groove at intervals, two small bending dies are respectively arranged on the tops of the two slot sliders, the second part is arranged between the two small bending dies, the second part comprises a large bending die and a fixing rod, the bending surface of the large bending die and the bending surface of the small bending die have the same bending center, and the fixing rod is arranged on the top of the large bending die.
[0007] Furthermore, the large bending mold is arranged above the center of the two small bending molds.
[0008] Furthermore, the bottom surface of the large bending mold is provided with an arc-shaped groove that bends upward.
[0009] Furthermore, a downwardly curved arc groove is formed on the top surface of the small bending mold.
[0010] Furthermore, the fixing rod is threadably connected to the large bending die.
[0011] In summary, the beneficial effects of the utility model are:
[0012] The steel pipe bending test fixture of the utility model has a simple structure, is easy to manufacture and maintain, is easy to operate, and improves the test efficiency. In addition, through the cooperation of the large bending die and the small bending die, it can adapt to seamless steel pipes of different diameters, expand the scope of application, realize accurate loading and control of the sample, improve data accuracy, and at the same time has adjustability, adjusting distance and height, which is convenient for bending tests of steel pipes of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of a steel pipe bending test fixture from one perspective of the utility model;
[0014] Figure 2 for Figure 1 A schematic structural diagram of the steel pipe bending test fixture from another perspective is shown.
[0015] Attached photos
[0016] Limiting piece 1, card slot slider 2, small bending die 3, large bending die 4, fixing rod 5 DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.
[0018] See also Figure 1-Figure 2 The utility model provides a steel pipe bending test fixture, including a first part and a second part, the first part includes a limiter 1, a slot slider 2 arranged on the limiter, and a small bending die 3 arranged on the slot slider, a slide groove is opened on the top of the limiter, two slot sliders are arranged in the slide groove at intervals, two small bending dies are respectively arranged on the top of the two slot sliders, the second part is arranged between the two small bending dies, the second part includes a large bending die 4 and a fixing rod 5, the bending surface of the large bending die and the bending surface of the small bending die have the same bending center, and the fixing rod is arranged on the top of the large bending die.
[0019] In one embodiment, the large bending mold is disposed above the center of the two small bending molds.
[0020] In one embodiment, the bottom surface of the large bending mold is provided with an arc-shaped groove that bends upward.
[0021] In one embodiment, a top surface of the small bending mold is provided with a downwardly curved arc groove.
[0022] In one embodiment, the fixing rod is threadedly connected to the large bending die.
[0023] The utility model provides a steel pipe bending test fixture, wherein a top fixing rod is fixed on a specific three-point bending test machine, and a top fixing rod is installed on the machine, and the height of the top fixing rod can be adjusted; a large bending die is fixed by a thread on the lower end of the top fixing rod, and the bending die is provided with an arc-shaped groove to adapt to seamless steel pipes of different diameters; two slot sliders and a slide groove are provided; the slot slider is installed in the slide groove and can be flexibly moved laterally; at the same time, a small bending die is installed and fixed on the two slot sliders, and the same bending center is maintained with the large bending die, and a fixing plate is provided on the small bending die to fix the steel pipe.
[0024] The working principle of the steel pipe bending test fixture of the utility model is: put the steel pipe on two supporting points with a certain distance, apply a downward load to the steel pipe at the midpoint of the two supporting points, and three-point bending occurs when the three contact points of the steel pipe form two equal moments, and the steel pipe will bend to different angles around the large bending die at the midpoint. That is, the large bending die installed under the top fixing rod applies a downward force to the seamless steel pipe in the direction of the midpoint of the two supporting points, and the two small bending dies installed on the slide are two supporting fixed points, so a three-point interactive bending test fixture can be buckled.
[0025] The steel pipe bending test fixture of the utility model has a simple structure, is easy to manufacture and maintain, is easy to operate, and improves the test efficiency. In addition, through the cooperation of the large bending die and the small bending die, it can adapt to seamless steel pipes of different diameters, expand the scope of application, realize accurate loading and control of the sample, improve data accuracy, and at the same time has adjustability, adjusting distance and height, which is convenient for bending tests of steel pipes of different specifications.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.
Claims
1. A steel pipe bending test fixture, characterized in that: It includes a first part and a second part, the first part includes a limiting member, a slot slider arranged on the limiting member, and a small bending mold arranged on the slot slider, a sliding groove is opened on the top of the limiting member, two slot sliders are arranged in the sliding groove at intervals, two small bending molds are respectively arranged on the top of the two slot sliders, the second part is arranged between the two small bending molds, the second part includes a large bending mold and a fixing rod, the bending surface of the large bending mold and the bending surface of the small bending mold have the same bending center, and the fixing rod is arranged on the top of the large bending mold.
2. The steel pipe bending test fixture according to claim 1, characterized in that: The large bending mold is arranged above the centers of the two small bending molds.
3. The steel pipe bending test fixture according to claim 2, characterized in that: The bottom surface of the large bending mold is provided with an arc-shaped groove bending upward.
4. The steel pipe bending test fixture according to claim 3, characterized in that: The top surface of the small bending die is provided with an arc-shaped groove bending downward.
5. The steel pipe bending test fixture according to claim 4, characterized in that: The fixing rod is threadedly connected to the large bending die.