JP3015418U - Impact test device using elastic rubber spring - Google Patents

Abstract

(57) [Abstract] [Purpose] Simplify the device, make it easier to use, and lower the price. [Configuration] Guide rail (1), acceleration frame (2), stopper (3), tension frame (4), launching device (5), collision mass body
It has (6), a rubber spring (7), and a cylinder (8). The guide rail is installed on the stationary side (9) vertically to the test body (10), and the acceleration frame and the tension frame attached to the launching device are movably installed. The stopper is installed on the stationary side on the moving path of the acceleration frame. The collision mass body is located on the acceleration frame, is moved to the guide rail, and is erected to be temporarily fixed to the acceleration frame. The rubber spring is installed between the acceleration frame and the stationary side, and the cylinder is installed between the tension frame and the stationary side. The rubber spring is tensioned by the cylinder, the acceleration frame is released by the launching device, and the acceleration frame is accelerated by the accumulated force of the rubber spring,
The impingement mass is separated from the acceleration frame by the stopper and impinges on the test body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an impact test device using an elastic rubber spring.

[0002]

[Prior art]

 Gravity (falling type), gas pressure, hydraulic pressure, rotary inertia force, metal springs, etc. are often used as the acceleration source energy of the collision mass body of the impact tester.

[0003]

[Problems to be solved by the device]

 Each of the above methods also has various problems such as a complicated device, difficulty in use, and high price.

The present invention focuses on the fact that the performance of the elastic rubber spring is improved so that it can be used as an energy source for an impact tester, such as an increase in the tensile holding energy per unit volume and a decrease in aging. , It aims to solve such problems by adopting it.

[0005]

[Means for Solving the Problems]

 An impact test device using an elastic rubber spring according to the present invention has a guide rail, an acceleration frame, a stopper, a tension frame, a launching device, a collision mass body, a rubber spring, and a cylinder.

The guide rail is installed on the stationary side in a direction perpendicular to the test body. The acceleration frame is movably installed on the guide rail. The stopper is installed on the stationary side by being exposed on the moving path of the acceleration frame. The tension frame is movably installed on the guide rail. The launcher is for the acceleration frame and is attached to the tension frame. Then, the collision mass body is movably mounted on the guide rail on the side of the acceleration frame facing the test body and temporarily fixed to the acceleration frame.

As an example of the temporary fixing mechanism, there is the following mechanism. That is, a rod with a neck groove is projected from the upper surface of the collision object mass, a shaft hole is formed in the lower part of the acceleration frame for loosely fitting this rod, and a part of itself is formed on the side surface of this shaft hole by a spring. When the rod is loosely fitted into the shaft hole, the sphere is pressed into the neck groove to temporarily fix the collision object mass to the acceleration frame, and when the acceleration frame hits the stopper and stops. Collider Mass Mass pushes back the sphere and the acceleration frame falls freely.

On the other hand, the rubber spring is installed between the acceleration frame and the stationary side. Also, the cylinder is installed between the tension frame and the stationary side. Then, a tensile load is applied to the rubber spring by the cylinder, the acceleration frame is released by the launching device, the acceleration frame is accelerated by the accumulated force of the rubber spring, and the acceleration frame is blocked by the stopper. The collision mass body is separated, and the collision mass body collides with the test body.

The launching device includes a pair of hook arms pivotally supported by the tension frame and an electromagnetic mechanism for connecting the hook arms to cooperate or separate the hook arms, and the acceleration frame includes the hook arms. Engageable pins are provided.

The collision mass is provided with a collision head on the surface facing the test body. The rubber springs are arranged in an even number and axially symmetrically.

The cylinder is connected to a load setting valve, a pressure detector, and a firing load indicator, and the influence of the time and temperature changes of the elastic characteristics of the rubber spring on the firing speed of the collision mass is immediately before firing. It is designed to be eliminated by adjusting the tensile load of.

[0012]

[Action]

 A rubber spring is installed between the acceleration frame and the fixed side. Temporarily fix the collision mass to the acceleration frame, and restrain the acceleration frame with the launcher (hacker device). If the tension frame is moved against the rubber spring by the cylinder, the tensile load increases as the rubber spring expands.

When the predetermined load is reached, the pressure supply is stopped and the tensile load is maintained. When the launcher is operated by an electromagnetic mechanism, the acceleration frame and the collision mass are accelerated. The acceleration frame stops by hitting a stopper with a damper, and after this point, the collision mass body separates from the acceleration frame and continues free running at a predetermined speed, and collides with the test body to perform an impact test.

The launching device has a pair of hook arms pivotally supported by the tension frame and an electromagnetic mechanism for connecting the two hook arms to cooperate or separate them, and the acceleration frame has the hook arms. When the engageable pin is provided, the tension frame and the acceleration frame are connected and released by an electromagnetic mechanism.

When the collision mass body is provided with a collision head on the test body facing surface, the load is locally applied to the test body by the collision head.

When the rubber springs are arranged in an even number and in axial symmetry, the tensile force with respect to the acceleration frame acts evenly in axial symmetry.

The cylinder is connected to a load setting valve, a pressure detector, and a firing load indicator, and the impact of the time and temperature changes of the elastic characteristics of the rubber spring on the firing speed of the collision mass is immediately before firing. If the tension is adjusted by adjusting the tensile load, the relaxation (load reduction with time) at a constant tension distance of the elastic rubber band can be dealt with by making the initial tensile load constant.

[0018]

【Example】

 Reference numeral 1 is a guide rail, 2 is an acceleration frame, 3 is a stopper, 4 is a tension frame, 5 is a launching device, 6 is a collision mass body, 7 is a rubber spring, and 8 is a cylinder.

The guide rail 1 is installed on the stationary side 9, for example, a foundation or a frame, and is perpendicular to the test body 10. The acceleration frame 2 is movably installed on the guide rail 1 by, for example, a rotator 11. The stopper 3 is installed on the stationary side 9 so as to project on the moving passage of the acceleration frame 2.

The tension frame 4 is movably installed on the guide rail 1 by means of, for example, a rotator 12. The launcher 5 is for the acceleration frame 2 and is attached to the tension frame 4. The collision mass body 6 is located on the surface of the acceleration frame 2 facing the test body 10, and is movably installed on the guide rail 1 by, for example, the rotator 13. The collision mass 6 can also be temporarily fixed to the acceleration frame 2.

The rubber spring 7 is installed between the acceleration frame 2 and the stationary side 9. The cylinder 8 is installed between the tension frame 4 and the stationary side 9.

Then, this device applies a tensile load to the rubber spring 7 by the cylinder 8, releases the acceleration frame 2 by the launching device 5, accelerates the acceleration frame 2 by the accumulated force of the rubber spring 7, and stops the stopper 3. Then, the acceleration frame 2 is blocked and the impact mass body 6 is separated. The impact mass body 6 continues free running thereafter and collides with the test body 10. The energy when the test body 10 is broken is measured.

Since the rubber spring 7 is used, the structure is simple, and the pressure can be accumulated in the rubber spring 7 only by supplying pressure to the cylinder 8. If the acceleration frame 2 is released by the launcher 5, the accumulated force of the rubber spring 7 can be applied to this. Acceleration, small size and effective testing are possible.

The launching device 5 has a pair of hook arms 22 and 23 pivotally supported by a shaft 21 on a tension frame 4, and an electromagnetic mechanism 24 that connects both hook arms. With this electromagnetic mechanism 24, both hook arms 22 and 23 are provided. Cooperate to achieve the hook function, or separate them to eliminate the hook function. The acceleration frame 2 is provided with a pin 25 that can be engaged with both hook arms 22 and 23.

The engagement and disengagement of the acceleration frame 2 and the launching device 5 need only be performed by operating the electromagnetic mechanism 24, and the work is simple.

The collision mass body 6 is provided with a collision head 26 on the surface facing the test body 10. The collision load on the test body 10 can be locally applied, and the load can be accurately measured.

The rubber springs 7 are evenly arranged in axial symmetry. Acceleration force can be applied to the acceleration frame 2 in a well-balanced manner, and measurement accuracy can be guaranteed.

The cylinder 8 may be of any suitable type such as a hydraulic type, a hydraulic type, a pneumatic type and the like. The cylinder 8 is connected to a load setting valve 27, a pressure detector 28, and a firing load indicator 29. The elastic characteristics of the rubber spring 7 change with time and temperature, and the tensile load immediately before launching can be adjusted by these to give the collision mass body 6 a predetermined launching speed. In the drawings, 31 is a pressure supply side, 32 is a firing valve, and 33 is a carriage.

[0029]

[Effect of device]

 According to the present invention, since the device can be simplified by adopting the elastic rubber spring, the use is simple and the cost can be reduced.

According to the second aspect, the electromagnetic mechanism can easily and quickly disengage the launching device and the acceleration frame.

According to the third aspect, the load on the test body can be locally applied, and accurate measurement can be performed.

According to the fourth aspect, the acceleration of the rubber spring with respect to the acceleration frame is evenly applied, and this also enables accurate measurement.

According to the fifth aspect, it is possible to give a predetermined firing speed to the collision mass body by adjusting the temporal and temperature changes of the elastic characteristics of the rubber spring, which enables the device to be used for a long time and stably. it can.

[Brief description of drawings]

FIG. 1 is a front view showing a specific example of an impact test device using an elastic rubber spring according to the present invention.

FIG. 2 is a right side view of the same.

[Explanation of symbols]

 1 Guide Rail 2 Accelerating Frame 3 Stopper 4 Tension Frame 5 Launching Device 6 Collision Mass Body 7 Rubber Spring 8 Cylinder 9 Stationary Side 10 Specimen 11 trochanter 12 trochanter 13 trochanter 21 Axis 22 Hook Arm 23 Hook Arm 24 Electromagnetic Mechanism 25 Pin 26 Collision head 27 Load setting valve 28 Pressure detector 29 Firing load indicator

Claims (5)

[Scope of utility model registration request] 1. A guide rail (1) and an acceleration frame (2)
And stopper (3), tension frame (4) and launcher
(5), collision mass (6), rubber spring (7), cylinder (8)
The guide rail (1) is installed on the stationary side (9) in a direction perpendicular to the test body (10), and the acceleration frame (2) is movably installed on the guide rail (1). The stopper (3) is installed on the stationary side (9) by advancing on the moving path of the acceleration frame (2), and the tension frame (4) is movably installed on the guide rail (1). The launching device (5) is for the acceleration frame (2) and is attached to the tension frame (4), and the collision mass (6) is the same as the test body (10) of the acceleration frame (2). Of the rubber spring (7) on the opposite side of the guide rail (1) so as to be movable and temporarily fastened to the acceleration frame (2), and the rubber spring (7) and the stationary side (2). 9), the cylinder (8) is installed between the tension frame (4) and the stationary side (9), and a tensile load is applied to the rubber spring (7) by the cylinder (8).
The acceleration frame (2) is released by the launching device (5), the acceleration frame (2) is accelerated by the accumulated force of the rubber spring (7), and the acceleration frame (2) is stopped by the stopper (3). An impact test device using an elastic rubber spring, characterized in that the collision mass body (6) is blocked and separated, and the collision mass body (6) collides with the test body (10). 2. The launching device (5) is attached to the tension frame (4) by an axis.
(21) A pair of hook arms (22, 23) pivotally supported by (21) and an electromagnetic mechanism for connecting the hook arms (22, 23) to cooperate or separate them.
An impact test using an elastic rubber spring according to claim 1, further comprising a pin (25) having (24), and the hook arm (22, 23) being engageable with the hook frame (22, 23). apparatus. 3. The impact test apparatus using an elastic rubber spring according to claim 1, wherein the collision mass body (6) is provided with a collision head (26) on a surface facing the test body (10). 4. The impact test apparatus using an elastic rubber spring according to claim 1, wherein the rubber springs (7) are arranged in an even number and axially symmetrically. 5. The load setting valve (2) for the cylinder (8)
7), which is connected to the pressure detector (28) and the firing load indicator (29), and the effect of time and temperature changes of the elastic characteristics of the rubber spring (7) on the firing speed of the collision mass body (6) Is eliminated by adjusting the tensile load immediately before the launch.
An impact test device using the elastic rubber spring according to.