SU1355884A1 - Impact test bed - Google Patents

Abstract

The invention relates to a percussion testing technique for objects and provides an increase in the accuracy of testing by eliminating repeated shocks. In the described stand, ball 2 is accelerated by accelerator 4 in the U-shaped guide tube b and hits the bottom element 7, which transfers the load to the test object 8. To prevent repeated shocks, a valve 9 is provided to shut off the pipe 6 made in the form of an unequal arm. When the ball 2 is accelerated, a passage through the bend 10 of the pipe 6 acts on the short lever arm and turns the flap 9, and when rebounding from element 7, it opens the last one. After that, the end of the long arm of the lever rests on the inner surface of the tube 6, thereby preventing the passage of the ball 2. 1 sludge. lkglaea S. f3 p4, JI SP 01 00 00 4; dks1va |

Description

The invention relates to a test apparatus, in particular to test benches for dynamic effects.

The purpose of the invention is to improve the accuracy of tests by eliminating repeated shocks.

The essence of the invention consists in striking the tested object from the bottom with the help of a gaar, accelerated in the I-shaped Guide Tube, in the slot of the knee of which there is a flap overlapping the pipe after the first blow and preventing the ball from being hit again.

The drawing shows schematically a stand, a general view.

The stand contains a base 1, a drummer in the form of a ball 2, a device 3 for accelerating a ball, which is a spring accelerator 4 with a bar 5, and a guide tube 6, over whose output element 7 is installed to transfer the load to the test object 8. The stand is equipped with a rotary a flap 9 serving to close the pipe 6. The tube 6 is made U-shaped, in its knee 10. there is a cutout 11 for inserting the flap 9, which is an unequal-arm lever. On the basis of 1 stand, an emphasis 12 was mounted, on which the long arm of the lever 9 was supported in the initial state, while the short arm was inside the wheel 1355884.

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the latch 5, the ball 2 is accelerated by the spring accelerator 4 on the left vertical section of the pipe 6, after which it moves along the curve of the knee 10, acting on the short arm of the lever with the valve 9, turns it and, moving the pipe upwards, loads the test object 8 with a shock impulse element 7. After the ball 2, moving B in the opposite direction along the knee 10, opens the valve 9 and brakes on the vertical section of the pipe 6, after which the end of the long arm of the lever abuts the inner surface of the knee 10 of the pipe 6, Ball 2, again falling according to labor e 6, is braked by the closed valve 9. In this case, the disturbances from the impacts of the ball 2 on the valve 9 are not transmitted to the test object 8, since the guide tube 6 and the object 8 are located on different bases 1 and 14 and, moreover, the object 8 is suspended on the lifting mechanism 13.

The proposed stand construction completely excludes repeated strikes.

Claims (1)

Invention Formula The test bench for shock tests, containing a base, a ball-shaped striker, a device for accelerating the ball, a guide tube for moving the ball in it, and an element for transmitting nana 10 of the pipe b located above the tube inlet and may be loaded onto the test object. , to move a moving ball 2, the length is due to the fact that, for the purpose of the complete arm, it is selected from the condition that the valve stops when the end of the valve interacts with the inner surface of the pipe 6; The test object 8 with the element 7 is suspended on an external lifting mechanism 13 mounted on a separate base 14. 40    - j increase the accuracy of testing by eliminating repeated shocks, it is equipped with a butterfly valve, which serves to block the guide tube, the pipe is U-shaped and has a cutout in its knee for insertion of the valve, the valve is an unequal lever, on the base there is a stop on which In the initial state, the long arm of the lever is operated, while the short arm of the lever is located with the possibility of the ball acting on it when it is not heated, and the length of the long arm of the lever is chosen to ensure that the valve stops at the interaction of its end with the inner surface of the pipe. The stand works as follows. On the load-lifting mechanism 13, the test object 8 with element 7 is suspended. The ball 2 is mounted on the latch 5 and the spring is pressed with a pre-selected force with a K1-shny accelerator 4. The valve 9 is installed with a long arm up until it touches the stop 12, After the triggering UITI Order 5787/38 Prod “polygr, pr-tie, g, Uzhgorod, st. Design - 4  , 355884 neither ten 15 20 25 thirty the latch 5, the ball 2 is accelerated by the spring accelerator 4 on the left vertical section of the pipe 6, after which it moves along the curve of the knee 10, acting on the short arm of the lever with the valve 9, turns it and, moving the pipe upwards, loads the test object 8 with a shock impulse element 7. After the ball 2, moving B in the opposite direction along the knee 10, opens the valve 9 and brakes on the vertical section of the pipe 6, after which the end of the long arm of the lever abuts the inner surface of the knee 10 of the pipe 6, Ball 2, again falling on labor e 6, is braked by the closed valve 9. In this case, the disturbances from the impacts of the ball 2 on the valve 9 are not transmitted to the test object 8, since the guide tube 6 and the object 8 are located on different bases 1 and 14 and, moreover, the object 8 is suspended on the lifting mechanism 13. The proposed stand construction completely excludes repeated strikes. Invention Formula The test bench for shock tests, containing a base, a drummer in the form of a ball, a device for accelerating a ball, a guide tube for moving the ball in it, and is located above the bolt. pipe house is an element for transferring loads to the test object, which is intended to 40 45 50    - j increase the accuracy of testing by eliminating repeated shocks, it is equipped with a butterfly valve, which serves to block the guide tube, the pipe is U-shaped and has a cutout in its knee for insertion of the valve, the valve is an unequal lever, on the base there is a stop on which In the initial state, the long arm of the lever is operated, while the short arm of the lever is located with the possibility of the ball acting on it when it is not heated, and the length of the long arm of the lever is chosen to ensure that the valve stops at the interaction of its end with the inner surface of the pipe. Circulation 776 Subscription