A self-resetting bending-torsion testing machine anti-bending cylinder device

Abstract

The utility model discloses a kind of self-resetting bending-torsion testing machine bending-resistant oil cylinder devices, belong to bending-torsion testing machine technical field, including bending-resistant oil cylinder, the hinged mechanism is arranged in the central upper of bending-resistant oil cylinder, device support is connected in the upper of the hinged mechanism, two reset springs are respectively arranged in the upper of bending-resistant oil cylinder, buffer block is arranged in the central of reset spring, device support is connected in the upper of reset spring, damping mechanism is arranged in the upper of bending-resistant cylinder tube.The utility model uses above-mentioned self-resetting bending-torsion testing machine bending-resistant oil cylinder device, by setting the hinged support in the central of bending-resistant oil cylinder and the reset spring of both sides of bending-resistant oil cylinder, bending-resistant oil cylinder is automatically reset under the action of spring force, efficiency is improved, artificial waste and inaccurate positioning are avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of bending and torsion testing machines, and specifically discloses a self-resetting bending and torsion testing machine anti-bending cylinder device. Background Technology

[0002] In the field of bending testing machines, bending and torsion testing machines are key equipment for testing the mechanical properties of materials, and are widely used for testing the bending and torsional properties of various metallic and non-metallic materials. During actual testing, the thrust cylinder is usually set to an initial position perpendicular to the workpiece being tested. As the test progresses and deformation accumulates, the workpiece's geometry changes significantly, causing an angle to appear between the thrust cylinder axis and the normal direction of the workpiece's force-bearing surface, which gradually increases. This angular deviation leads to decreased force application accuracy and increased test data deviation.

[0003] The traditional solution involves designing the thrust cylinder as a rotatable structure. During operation, the thrust cylinder rotates as the workpiece deforms, ensuring that the cylinder axis is perpendicular to the force-bearing surface of the workpiece throughout the experiment. However, this method has significant limitations. Because the amount of workpiece deformation varies after each test, the thrust cylinder may remain in an unpredictable position. Before subsequent tests, operators must readjust the thrust cylinder angle. This process is not only time-consuming and labor-intensive but also relies on the operator's experience and judgment, making it difficult to guarantee the accuracy of angle restoration. Especially when conducting large-scale repeated tests or long-term fatigue tests, this manual intervention significantly reduces testing efficiency and increases the risk of human error. Summary of the Invention

[0004] The purpose of this invention is to provide a self-resetting bending and torsion testing machine anti-bending cylinder device. Through the hinge mechanism arranged above the anti-bending cylinder, in conjunction with the reset spring, the bending and torsion testing machine can automatically reset after the work is completed, without the need for extra manual intervention, thereby improving work efficiency, avoiding human risk, and improving the reliability of test results.

[0005] To achieve the above objectives, this utility model provides a self-resetting bending and torsion testing machine anti-bending cylinder device, including an anti-bending cylinder. A hinge mechanism is provided at the top center of the anti-bending cylinder, and a device support is connected above the hinge mechanism. Two return springs are respectively provided at both ends of the upper part of the anti-bending cylinder. A buffer block is provided in the center of the return spring, and the upper part of the return spring is connected to the device support. A damping mechanism is provided above the anti-bending cylinder.

[0006] Preferably, the anti-bending cylinder includes an anti-bending cylinder barrel, an end cap, a cylinder head, a piston rod, and hydraulic lines. The end cap is located in front of the cylinder barrel, and the piston rod extends from the center of the end cap. The cylinder head is located behind the anti-bending cylinder barrel, and the hydraulic lines are connected to the rear of the cylinder head.

[0007] Preferably, the end cap and the cylinder head are fixed to the anti-bending cylinder by fixing bolts.

[0008] Preferably, the device bracket is provided with four adjusting bolts for adjusting the reset spring, and the adjusting bolts are located directly above the reset spring.

[0009] Preferably, the damping mechanism includes a slide rail, a slider, a connecting rod, a damper, and a damping bracket.

[0010] Preferably, the slide rail is disposed on the anti-bending cylinder, the lower half of the slider is connected to the slide rail, the upper half of the slider is hinged to the connecting rod, the connecting rod passes through the upper surface of the device bracket, the damper is connected above the connecting rod, the damper is placed on the damping bracket, and the damping bracket is disposed on the upper surface of the device bracket.

[0011] Preferably, the hinge mechanism consists of a hinge bracket and a hinge rod.

[0012] Therefore, this utility model adopts the above-mentioned self-resetting bending and torsion testing machine anti-bending cylinder device. Through the hinge mechanism arranged above the anti-bending cylinder, in conjunction with the return spring, the bending and torsion testing machine can automatically reset after the work is completed. The buffer block and damper are used to avoid possible collisions during the spring rebound process. The adjusting bolt can adjust the tightness of the return spring to ensure that the spring can still accurately reset after fatigue. No extra manual intervention is required, which improves work efficiency, avoids human risk, and improves the reliability of test results.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a self-resetting bending and torsion testing machine anti-bending cylinder device according to the present invention; Figure 2 This is a cross-sectional schematic diagram of the damping mechanism in the anti-bending cylinder device of a self-resetting bending and torsion testing machine according to this utility model.

[0015] Figure Labels 1. Slide rail; 2. Adjusting bolt; 3. Damper; 4. Connecting rod; 5. Damping bracket; 6. Hinge bracket; 7. Hinge rod; 8. Fixing bolt; 9. Piston rod; 10. End cap; 11. Slider; 12. Return spring; 13. Buffer block; 14. Anti-bending cylinder; 15. Cylinder head; 16. Device bracket; 17. Hydraulic pipeline. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example 1 This invention provides a self-resetting bending and torsion testing machine anti-bending cylinder device, the structure of which is as follows: Figure 1-2 As shown, the device includes an anti-bending cylinder. A hinge mechanism is provided at the top center of the anti-bending cylinder. The anti-bending cylinder is connected to the device support 16 above through this hinge mechanism. Two sets of return springs 12 are symmetrically arranged above the anti-bending cylinder. Each set consists of two identical return springs 12. The return springs 12 are used to realize the automatic reset function of the device. A damping mechanism is arranged above the anti-bending cylinder.

[0019] The anti-bending cylinder includes an anti-bending cylinder barrel 14, a piston rod 9, an end cap 10, a cylinder head 15, hydraulic lines 17, and fixing bolts 8. The end cap 10 is located at the front end of the anti-bending cylinder barrel 14 and is fixed to the anti-bending cylinder barrel 14 by four fixing bolts 8. The piston rod 9 passes through the middle of the end cap 10 and moves forward to push the test piece. The cylinder head 15 is located at the rear end of the anti-bending cylinder barrel 14 and is fixed to the anti-bending cylinder barrel 14 by four fixing bolts 8. The hydraulic lines 17 are connected to the cylinder head 15.

[0020] The hinge mechanism consists of a hinge bracket 6 on the anti-bending cylinder 14, a hinge bracket 6 on the device bracket 16, and a hinge rod 7. The hinge bracket 6 forms a rotating pair connection through the hinge rod 7.

[0021] The reset mechanism employs four sets of reset springs 12, each set of which has a buffer block 13 at its center to absorb impact energy during the reset process and prevent direct collision between the anti-bending cylinder and the device support 16. The upper end of the reset spring 12 is connected to the device support 16, which has four adjusting bolts 2 for adjusting the preload of the reset spring 12 to ensure accurate reset even under fatigue conditions.

[0022] like Figure 2As shown, the damping mechanism consists of a slide rail 1, a slider 11, a connecting rod 4, a damper 3, and a damping bracket 5. The slide rail 1 is mounted on the anti-bending cylinder 14. The lower half of the slider 11 is connected to the slide rail 1, and the upper half of the slider 11 is hinged to the connecting rod 4. The connecting rod 4 passes through the upper surface of the device bracket 16, and the damper 3 is connected above the connecting rod 4. The damper 3 is mounted on the damping bracket 5, which is also mounted on the upper surface of the device bracket 16. The slide rail 1, slider 11, connecting rod 4, and damper 3 form a four-bar linkage. When the anti-bending cylinder self-resets, the cylinder of the damping mechanism generates resistance, causing the movement speed of the anti-bending cylinder to slow down rapidly, allowing the anti-bending cylinder to return to its balanced state more quickly and improving working efficiency.

[0023] The self-resetting bending-torsion testing machine bending cylinder device described in this embodiment operates as follows: During testing, a test fixture is mounted on the front end of piston rod 9 and contacts the workpiece to be tested. Hydraulic medium enters the anti-bending cylinder through hydraulic line 17, pushing piston rod 9 forward and causing the test fixture to deform the workpiece. As the load increases, the workpiece deformation increases, and the test surface rotates. Because the anti-bending cylinder adopts a hinged structure, it can rotate during operation, allowing its axis to remain perpendicular to the force-bearing surface as the workpiece deforms. During this process, the return spring 12 is compressed and stretched.

[0024] After the test, the test fixture is separated from the workpiece, and the return spring 12 releases its stored energy to drive the anti-bending cylinder to reset. Simultaneously, the damping mechanism generates a resistive force, causing the reset speed to rapidly decrease, ultimately achieving precise repositioning at the initial position. If the return spring 12 experiences fatigue due to prolonged use, leading to a deviation in the reset position, the preload of the return spring 12 can be adjusted using the adjusting bolt 2 to ensure reset accuracy.

[0025] Therefore, this utility model adopts the above-mentioned self-resetting bending and torsion testing machine anti-bending cylinder device. Through the hinge mechanism arranged above the anti-bending cylinder, in conjunction with the return spring, the bending and torsion testing machine can automatically reset after the work is completed. The buffer block and damping are used to avoid possible collisions during the spring rebound process. The adjusting bolt can adjust the tightness of the return spring to ensure that the spring can still accurately reset after fatigue. No extra manual intervention is required, which improves work efficiency, avoids human risk, and improves the reliability of test results.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A self-resetting bending and torsion testing machine bending cylinder device, characterized in that: The device includes an anti-bending cylinder, a hinge mechanism at the top center of the anti-bending cylinder, a device bracket connected above the hinge mechanism, two return springs at each end of the upper part of the anti-bending cylinder, a buffer block at the center of the return spring, the upper part of the return spring connected to the device bracket, and a damping mechanism above the anti-bending cylinder.

2. The self-resetting bending and torsion testing machine anti-bending cylinder device according to claim 1, characterized in that: The anti-bending cylinder includes an anti-bending cylinder barrel, an end cap, a cylinder head, a piston rod, and hydraulic lines. The end cap is located at the front of the anti-bending cylinder barrel, and the piston rod extends from the center of the end cap. The cylinder head is located at the rear of the anti-bending cylinder barrel, and the hydraulic lines are connected to the rear of the cylinder head.

3. The self-resetting bending and torsion testing machine anti-bending cylinder device according to claim 2, characterized in that: The end cap and the cylinder head are fixed to the bending cylinder by fixing bolts.

4. The self-resetting bending and torsion testing machine anti-bending cylinder device according to claim 1, characterized in that: The device bracket is equipped with four adjusting bolts for adjusting the reset spring, and the adjusting bolts are located directly above the reset spring.

5. The self-resetting bending and torsion testing machine anti-bending cylinder device according to claim 1, characterized in that: The damping mechanism includes a slide rail, a slider, a connecting rod, a damper, and a damping support.

6. The self-resetting bending and torsion testing machine anti-bending cylinder device according to claim 5, characterized in that: The slide rail is mounted on the anti-bending cylinder. The lower half of the slider is connected to the slide rail, and the upper half of the slider is hinged to the connecting rod. The connecting rod passes through the device bracket, and the damper is connected above the connecting rod. The damper is mounted on the damping bracket, and the damping bracket is mounted on the upper surface of the device bracket.

7. The self-resetting bending and torsion testing machine anti-bending cylinder device according to claim 1, characterized in that: The hinge mechanism consists of a hinge bracket and a hinge rod.

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