CN107101797B

CN107101797B - Cylindrical experimental device for measuring shock resistance of buffer

Info

Publication number: CN107101797B
Application number: CN201710404327.9A
Authority: CN
Inventors: 谢新宇; 葛建立; 安子行; 陆继辉; 黄飞; 王浩; 杨国来; 孙全兆
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 2017-06-01
Filing date: 2017-06-01
Publication date: 2023-08-04
Anticipated expiration: 2037-06-01
Also published as: CN107101797A

Abstract

The invention discloses a cylindrical experimental device for measuring shock resistance of a buffer, which comprises a sleeve, an outer cylinder, a chassis, a barrel, M flanges and N guide rails, wherein the bottom of the outer cylinder is fixedly connected with the chassis, the barrel is arranged in the outer cylinder, the outer wall of the barrel is sleeved with guide blocks, the N guide rails are arranged along the long axis direction of the barrel and are uniformly distributed on the inner wall of the outer cylinder, and the guide blocks are matched with the guide rails and slide along the guide rails; the M flanges are uniformly distributed along the circumferential direction of the outer cylinder and fixedly connected with the outer cylinder, P lugs are arranged on the outer wall of the sleeve, the sleeve is fixedly connected with the top of the barrel, the sleeve is positioned above the outer cylinder, one end of the buffer to be tested is fixedly connected with the lugs of the sleeve, and the other end of the buffer to be tested is fixedly connected with the flanges. The invention has simple and reliable structure and low production cost, well simulates the impact condition of the transmitting device, and is applicable to various buffers.

Description

Cylindrical experimental device for measuring shock resistance of buffer

Technical Field

The invention belongs to the field of experimental devices, and particularly relates to a cylindrical experimental device for measuring shock resistance of a buffer.

Background

In many occasions where mechanical impact exists (such as a transmitting device, an automobile suspension system and the like), a buffer is required, and the shock resistance of the buffer needs to be tested experimentally, so that a buffer performance test device is required.

The existing buffer performance experimental device is generally drop hammer type or hydraulic type, and the existing buffer performance experimental device works under the condition of low frequency to perform experiments, so that the high-frequency dynamic characteristic of the buffer cannot be obtained. The impact force generated in the transmitting device has a short duration (about 0.3 ms) and a large force amplitude (generally more than 30 KN), and therefore, a damper is required to have good high-frequency performance.

Disclosure of Invention

The invention aims to provide a cylindrical experimental device for measuring shock resistance of a buffer, which solves the problem that the high-frequency dynamic characteristic of the buffer cannot be obtained when the existing buffer is tested under the condition of low frequency.

The technical solution for realizing the purpose of the invention is as follows: a cylindrical experimental device for measuring shock resistance of a buffer comprises a sleeve, an outer cylinder, a chassis, a barrel, M buffer installation seats and N guide rails, wherein M is more than or equal to 2, N is more than or equal to 2 and less than or equal to 8, the bottom of the outer cylinder is fixedly connected with the chassis, the barrel is arranged in the outer cylinder, a flange is sleeved on the outer wall of the barrel, the N guide rails are arranged along the long axis direction of the barrel and are uniformly distributed on the inner wall of the outer cylinder, and the flange is in clearance fit with the guide rails and slides along the guide rails; the M buffer mounting seats are uniformly distributed along the circumferential direction of the outer cylinder and fixedly connected with the outer cylinder, P lugs are arranged on the outer wall of the sleeve, P=M, the sleeve is fixedly connected with the top of the barrel, the sleeve is positioned above the outer cylinder, one end of the buffer to be tested is fixedly connected with the lugs of the sleeve, and the other end of the buffer to be tested is fixedly connected with the buffer mounting seat.

The bottom plate of the buffer mounting seat is a mounting surface, and the mounting surface is provided with radian and is matched with the outer cylinder; the buffer mounting seat is provided with a support lug, the support lug is provided with a through hole and is connected with one end of the buffer to be tested, and a reinforcing rib is arranged between the support lug and the bottom plate.

The barrel is a cylinder, the top of the barrel is provided with an annular boss, and pressure is transmitted to the buffer to be tested through clearance fit of the boss and the sleeve.

The outer cylinder is a cylinder, and a plurality of lightening holes are formed in the outer cylinder, avoiding the guide rail and the buffer mounting seat.

Compared with the prior art, the invention has the remarkable advantages that: (1) The structure is simple and reliable, the production cost is low, and the impact condition of the transmitting device is well simulated; (2) The device can be used for installing buffers in most length and diameter ranges, and has good adaptability.

Drawings

Fig. 1 is a schematic view of the overall structure of a cylindrical experimental device for measuring shock resistance of a buffer according to the present invention.

Fig. 2 is a partial enlarged view of the outer cylinder and chassis of the cylindrical test device for measuring shock resistance of the shock absorber according to the present invention.

Fig. 3 is an enlarged view of a damper mount of a cylindrical experimental apparatus for measuring impact resistance of a damper according to the present invention.

Fig. 4 is an enlarged view of a sleeve of a cylindrical test device for measuring shock resistance of a bumper according to the present invention.

Fig. 5 is an enlarged view of a barrel and flange of the cylindrical test device for measuring shock resistance of a bumper according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, a barrel-shaped experimental device for measuring shock resistance of a buffer comprises a sleeve 1, an outer barrel 2, a chassis 3, a barrel 4, 2 buffer installation seats 5 and 4 guide rails 6, wherein the bottom of the outer barrel 2 is fixedly connected with the chassis 3, the two are welded into a whole, the barrel 4 is arranged in the outer barrel 2, 1 flange plate is sleeved in front of and behind the outer wall of the barrel 4, 4 guide rails 6 are arranged along the long axis direction of the barrel 4 and are uniformly distributed on the inner wall of the outer barrel 2, and the flange plates are in clearance fit with the guide rails 6 and slide along the guide rails 6. The circumference evenly distributed of 2 buffer mount pad 5 along urceolus 2 outer walls links firmly with urceolus 2 through the bolt, and sleeve 1 outer wall is equipped with 2 lugs, and sleeve 1 links firmly with barrel 4 top, and sleeve 1 is located urceolus 2 top, and the lug of 7 one end of the buffer that awaits measuring and sleeve 1 links firmly through the screw thread, and the other end links firmly with buffer mount pad 5.

The bottom plate of the buffer mounting seat 5 is a mounting surface, the mounting surface is provided with radian, a supporting lug is arranged on the buffer mounting seat 5 matched with the outer cylinder 2, a through hole is arranged on the supporting lug, and the supporting lug is connected with one end of the buffer 7 to be tested. Reinforcing ribs are arranged between the lugs and the bottom plate. Two sides of the bottom plate are respectively provided with a row of through holes which are connected with the outer cylinder 2.

The connecting interface of the buffer 7 to be tested is provided with a sleeve at one end and a buffer mounting seat at one end, and both ends are connected by threads.

The barrel 4 is a cylinder, the top of the barrel is provided with an annular boss, and the boss is matched with the sleeve 1 to transmit pressure to the buffer 7 to be tested.

The outer cylinder 2 is a cylinder, and a plurality of lightening holes are formed in the outer cylinder 2 avoiding the guide rail 6 and the buffer mounting seat 5.

The barrel 4 is welded with a guide disc, a groove on the guide disc forms clearance fit with the guide rail 6, and a round edge on one side is cut off, so that interference with bolts and nuts for installing a buffer mounting seat is avoided.

The working process comprises the following steps:

the cylindrical experimental device for measuring the shock resistance of the buffer is arranged on a horizontal or vertical plane through the chassis 3. One end of the buffer 7 to be tested is fixedly connected with the supporting lugs of the sleeve 1 through threads, and the other end of the buffer 7 to be tested is fixedly connected with the buffer mounting seat 5. When the boss at the top of the barrel 4 receives an axial impact load, the impact load can be transmitted to the buffer 7 to be tested through the sleeve 1 matched with the boss, so that the buffer 7 to be tested works, and meanwhile, the barrel 4 moves along the guide rail 6 on the inner wall of the outer barrel 2, and therefore, the displacement and the speed of the buffer 7 to be tested can be obtained by measuring the displacement and the speed of the barrel 4. The invention can better simulate the impact condition of the transmitting device, and the measurement of physical quantities such as buffer displacement, speed and the like is more convenient.

Claims

1. A measure cylindric experimental apparatus of buffer shock resistance, its characterized in that: the novel high-speed buffer comprises a sleeve (1), an outer barrel (2), a chassis (3), a barrel (4), M buffer installation seats (5) and N guide rails (6), wherein M is more than or equal to 2, N is more than or equal to 2 and less than or equal to 8, the bottom of the outer barrel (2) is fixedly connected with the chassis (3), the barrel (4) is arranged in the outer barrel (2), the outer wall of the barrel (4) is sleeved with a guide disc, the N guide rails (6) are arranged along the long axis direction of the barrel (4) and are uniformly distributed on the inner wall of the outer barrel (2), and the guide disc is matched with the guide rails (6) to slide along the guide rails (6); m buffer mounting seats (5) are uniformly distributed along the circumferential direction of the outer cylinder (2) and fixedly connected with the outer cylinder (2), P lugs are arranged on the outer wall of the sleeve (1), P=M, the sleeve (1) is fixedly connected with the top of the barrel (4), the sleeve (1) is positioned above the outer cylinder (2), one end of a buffer (7) to be tested is fixedly connected with the lugs of the sleeve (1), and the other end of the buffer is fixedly connected with the buffer mounting seat (5);

the bottom plate of the buffer mounting seat (5) is a mounting surface, and the mounting surface is provided with radian and is matched with the outer cylinder (2); the buffer mounting seat (5) is provided with a support lug, the support lug is provided with a through hole and is connected with one end of the buffer (7) to be tested, and a reinforcing rib is arranged between the support lug and the bottom plate;

the barrel (4) is a cylinder, the top of the barrel is provided with an annular boss, and the boss is in clearance fit with the sleeve (1) to transmit pressure to the buffer (7) to be tested;

the outer cylinder (2) is a cylinder, and a plurality of lightening holes are formed in the outer cylinder (2) avoiding the guide rail (6) and the buffer mounting seat (5).