An out-of-plane deformation detection device for energy-consuming components

Abstract

The present invention relates to the field of detection technology, and discloses an out-of-plane deformation detection device for energy-absorbing components. The present invention includes two swing rods and a slide board, the two sides of the slide board are respectively fitted with the two swing rods, the two swing rods are symmetrically placed with the slide board as the center of the symmetry plane, the swing rods can slide up and down relative to the slide board along the direction of the slide board, the two swing rods are respectively provided with supports, a guide rod is provided between the supports, and is slidably connected with the supports, the two ends of the guide rod extend out of the corresponding supports respectively, the middle part of the guide rod is slidably provided with two matching clamps, a spring is installed on the guide rod between the clamp and the support, and a displacement sensor is clamped between the two clamps. After the detection device is installed, the detection point is the diagonal center point of the energy-absorbing component. When the energy-absorbing component performs shearing motion and vertical stretching exists, the swing rod with the support extends along the swing rod direction, the spring extends to release the compression displacement, and the gap between the support and the clamp is supplemented to ensure that the measuring point is still the diagonal center point of the energy-absorbing component, and vice versa.

Description

Technical Field

[0001] The invention relates to the field of detection technology, and in particular to an out-of-plane deformation detection device for an energy-consuming component. Background Art

[0002] At present, the main form of failure of energy-absorbing components in experiments is failure of components due to excessive out-of-plane deformation. Usually, grids are drawn on the energy-absorbing components, and the grid size is measured after the components are destroyed, so as to calculate the out-of-plane deformation of the energy-absorbing components. However, this method is often affected by factors such as drawing instruments, measurement personnel and measurement tools, and the measurement accuracy is not high. In addition, it is impossible to measure the monitoring points in real time as the energy-absorbing components deform during the test, resulting in inaccurate test results. Summary of the invention

[0003] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides an out-of-plane deformation detection device for an energy-consuming component.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an out-of-plane deformation detection device for an energy-absorbing component, comprising two swing rods and a slide plate, the two sides of the slide plate are respectively fitted with the two swing rods, the two swing rods are symmetrically placed with the slide plate as the center of the symmetry plane, the two swing rods and the slide plate are connected as a whole, the swing rod can slide up and down relative to the slide plate along the direction of the slide plate, the two swing rods are respectively provided with a support, a guide rod is provided between the two supports, and is slidably connected with the support, the two ends of the guide rod extend out of the corresponding support respectively, the middle part of the guide rod is slidably provided with two matching clamps, a spring is installed on the guide rod between the clamp and the support, a displacement sensor is clamped between the two clamps, and the slide plate is made of a material with a small friction coefficient with the swing rod. After the detection device is installed, the detection point is the diagonal center point of the energy-absorbing component, when the energy-absorbing component performs shearing motion and vertical stretching exists, the swing rod with the support extends along the swing rod direction, the spring extends to release the compression displacement, supplements the gap between the support and the clamp, and ensures that the detection point is still the diagonal center point of the energy-absorbing component, and vice versa. At the same time, a slide plate with a small friction coefficient is used to reduce the friction during relative motion and reduce wear during motion.

[0005] Preferably, the rocker arm and the skateboard are both provided with long slot holes, and the rocker arm and the skateboard are connected by a connecting piece, one end of the connecting piece is fixed to the rocker arm on one side, and the other end passes through the long slot hole of the skateboard and the long slot hole of the rocker arm on the other side, thereby connecting the rocker arm and the skateboard into one.

[0006] Preferably, the connecting member is a driving screw, and a through hole is provided on the rocker arm. The driving screw passes through the through hole of the rocker arm on one side, the long slot hole of the skateboard, and the long slot hole of the rocker arm on the other side in sequence to connect the three into one.

[0007] Preferably, a nut is provided at the threaded end of the plug screw.

[0008] Preferably, the driving screw is provided with a shaft sleeve, and the shaft sleeve is provided with a shaft shoulder for positioning, and can be slidably and tightly connected to the long slot hole of the rocker arm and the slide plate.

[0009] Preferably, a protrusion is provided at one end of the rocker rod.

[0010] Preferably, a through hole is provided at the protrusion.

[0011] Preferably, a plug screw is provided in the through hole, and the rocker arm and the energy-absorbing component are connected via the plug screw.

[0012] Preferably, a disc spring is provided at the mounting position of the plug screw to prevent the device itself from undergoing out-of-plane deformation that would affect the measurement results.

[0013] Preferably, the thickness of the protrusion on the upper portion of the rocker arm is equal to twice the sum of the thickness of the lower portion of the rocker arm and the thickness of the slide plate.

[0014] Preferably, both ends of the guide rod are provided with limiting members.

[0015] Preferably, at least one of the limiting members at both ends of the guide rod is detachably connected.

[0016] Preferably, a shaft shoulder is provided on one side of the guide rod, and a nut is fixedly connected to the other side.

[0017] The beneficial effects of the present invention are:

[0018] First, the device is small and portable, easy to install, and can be installed in multiple locations for multi-point measurement.

[0019] Second, when testing energy-absorbing components, it is not affected by the vertical tensile and compressive deformation and shear deformation of the energy-absorbing components. It can automatically adjust with the movement of the energy-absorbing components and accurately follow the movement of the measuring point for real-time detection.

[0020] Third, it is easy to adjust and can be used to detect energy-consuming components of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure explosion of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the support of the present invention;

[0024] Figure 4-7 This is a schematic diagram of the application of the present invention.

[0025] In the figure: 1. rocker arm; 2. slide plate; 3. support; 4. fixture; 5. guide rod; 6. bushing; 7. displacement sensor; 8. spring; 9. plug screw; 10. disc spring; 11. nut; 12. long slot hole; 13. energy-absorbing component; 14. through hole; 15. shaft shoulder. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0027] Embodiment: An out-of-plane deformation detection device for an energy-consuming component, according to Figure 1-3 As shown, it includes a rocker bar, a slide plate, a support, a fixture, a guide rod, a bushing, a displacement sensor, a spring, a plug screw, a disc spring, and a nut. The two sides of the slide plate are respectively fitted with the two rocker bars, and the two rocker bars are symmetrically placed with the slide plate as the center of the symmetry plane. Taking the right rocker bar as an example, the rocker bar is provided with two through holes and one long slot hole from top to bottom, and the top side through hole is arranged at the protrusion for installing the plug screw and fixing the energy-absorbing component. The other through hole is arranged near the long slot hole for installing the plug screw and connecting the slide plate and the other rocker bar. The slide plate is provided with a long slot hole, and the long slot hole on the rocker bar and the long slot hole on the slide plate are equal in width. The support is provided with a through hole for installing the plug screw and a through hole for installing the guide rod. The head of the plug screw is provided with a thread, and the middle part It is divided into an optical axis. The plug screw and nut overlap and connect the support, pendulum, slide plate, sleeve and butterfly spring together. The plug screw and sleeve, pendulum, slide plate and support are all connected by overfitting to eliminate the installation gap, which is conducive to improving the detection accuracy. There is a groove on the back of the support for tight connection with the pendulum. The support and the clamp can be slidably connected to the guide rod in the order of support-clamp-clamp-support. One end of the guide rod is provided with a shoulder and the other end is fixed with a connecting nut to prevent the guide rod from coming out. The spring is connected to the guide rod between the support and the clamp after compression. The spring stiffness is the same, so that the displacement sensor is always located at the center of the device. The clamp is provided with a V-shaped groove for detachably fixing the displacement sensor between the two clamps. The pendulum is generally made of iron to ensure the rigidity of the structure. The slide plate can be made of copper-based or PTFE with a small friction coefficient with iron, which reduces the friction coefficient during relative motion and reduces wear.

[0028] according to Figure 4-6 As shown, the detection device is connected to the energy-absorbing component through a plug screw, and a disc spring is connected between the plug screw and the rocker arm of the device to eliminate the installation gap on the plane.

[0029] according to Figure 7 As shown in the figure, after the detection device is installed, the detection point is the diagonal center point of the energy-absorbing component. When the energy-absorbing component performs shearing movement and vertical stretching occurs, the swing arm with the support extends along the groove, the spring extends to release the compression displacement, and the gap between the support and the fixture is supplemented to ensure that the detection point is still the diagonal center point of the energy-absorbing component. Vice versa.

[0030] Working principle: After the out-of-plane deformation detection device is installed on the energy-absorbing component, during the experiment, the energy-absorbing component is subjected to reciprocating shearing movement in the plane under the action of the testing machine, and is accompanied by random vertical movement. The out-of-plane deformation detection device can automatically adjust with the shearing and vertical movement of the energy-absorbing component, so that the detection point of the displacement sensor will not be offset, and accurate measurement can be performed.

[0031] The above content is a further detailed description of the technical solution provided in combination with the preferred implementation methods of this patent. It cannot be determined that the specific implementation of the present invention is limited to the above descriptions. For ordinary technicians in the technical field to which this patent belongs, without departing from the concept of this patent, they can also make several simple deductions or substitutions, which should be deemed to fall within the scope of protection of this patent.

Claims

1. An out-of-plane deformation detection device for energy-consuming components, Features: It includes two rocker arms and a skateboard, wherein two surfaces of the skateboard are respectively fitted with the two rocker arms, the two rocker arms are symmetrically placed with the skateboard as the center of the symmetry plane, the two rocker arms and the skateboard are connected as a whole, the rocker arms can slide up and down along the direction of the skateboard relative to the skateboard, the two rocker arms are respectively provided with supports, a guide rod is provided between the two supports and is slidably connected to the supports, two ends of the guide rod respectively extend out of corresponding supports, two matching clamps are slidably provided in the middle of the guide rod, a spring is installed on the guide rod between the clamp and the support, and a displacement sensor is clamped between the two clamps.

2. The out-of-plane deformation detection device for energy-consuming components according to claim 1, Features: The swing rod and the slide plate are both provided with long slot holes, and the swing rod and the slide plate are connected by a connecting piece, one end of the connecting piece is fixed to the swing rod on one side, and the other end passes through the long slot hole of the slide plate and the long slot hole of the swing rod on the other side, thereby connecting the swing rod and the slide plate into one body.

3. The out-of-plane deformation detection device for energy-consuming components according to claim 2, Features: The connecting piece is a driving screw, and a through hole is provided on the rocker arm. The driving screw passes through the through hole of the rocker arm on one side, the long slot hole of the slide plate, and the long slot hole of the rocker arm on the other side in sequence to connect the three into one.

4. The out-of-plane deformation detection device for energy-consuming components according to claim 3, Features: The threaded end of the plug screw is provided with a nut.

5. The out-of-plane deformation detection device for energy-consuming components according to claim 3, Features: The plug screw is provided with a shaft sleeve, and the shaft sleeve is provided with a shaft shoulder for positioning, and can be slidably and tightly connected to the long slot hole of the swing rod and the slide plate.

6. The out-of-plane deformation detection device for energy-consuming components according to claim 1, Features: A protrusion is provided at one end of the swing rod, and the thickness of the protrusion on the upper part of the swing rod is equal to twice the sum of the thickness of the lower part of the swing rod and the thickness of the slide plate.

7. The out-of-plane deformation detection device for energy-consuming components according to claim 6, Features: The protrusion is provided with a through hole.

8. The out-of-plane deformation detection device for energy-consuming components according to claim 7, Features: A plug screw is arranged in the through hole, and the swing rod and the energy-absorbing component are connected by the plug screw.

9. An out-of-plane deformation detection device for energy-consuming components according to claim 3, 4, 5 or 8, Features: A disc spring is provided at the installation position of the plug screw to prevent the device itself from being deformed out of the plane and affecting the measurement result.

10. An out-of-plane deformation detection device for energy-absorbing components according to any one of claims 1 to 8, Features: Limiting pieces are provided at both ends of the guide rod, and at least one of the limiting pieces is detachably connected.

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