CN205228955U - Railway vehicle coupling fatigue strength test bench - Google Patents

Abstract

The utility model provides a railway vehicle coupling fatigue strength test bench, include: a pair of coupling of experimental usefulness, the both ends difference fixed mounting of coupling is on left side simulation mount pad and right side simulation mount pad, left side simulation mount pad is connected with the removal roof beam, and removal roof beam fixed connection actuator, actuator are fixed on the stiff end reaction beam, right side simulation mount pad passes through the connecting rod to be fixed on adjustable mechanism, and this adjustable mechanism can adjust the upper and lower position of the connected one end of connecting rod and/or control the position. The utility model discloses experimentation cost is low, experimental convenient and fast more, and the pertinence is stronger, and test efficiency is higher.

Description

A railway vehicle coupler fatigue strength test bench

technical field

The utility model relates to the mechanical field, in particular to a railway vehicle coupler fatigue strength test bench.

Background technique

Railway transportation is the main mode of transportation in my country, and the proportion of railway freight transportation exceeds half of the total freight transportation in the country. With the development of my country's railway freight towards the direction of heavy load and speed increase, the requirements for couplers are getting higher and higher. The force of the coupler in actual use has become worse, and the failure of the coupler such as cracks and breaks has become more frequent, which has seriously affected the safety and efficiency of railway transportation.

The coupler buffer device is one of the most basic and important components of a railway vehicle. Generally speaking, the composition of the coupler buffer device includes the coupler (knuckle and coupler body, etc.), buffer, coupler frame, front and rear slave plates, etc. The main function of the coupler is to complete the connection between each vehicle and keep a certain distance between the vehicle and the vehicle. In addition, it can also transmit traction and impact. The buffer is used to alleviate the longitudinal impulse generated during the actual running of the train and the collision generated during the shunting operation. It can effectively absorb the impact kinetic energy, thereby reducing the dynamic effect of the vehicles when they collide with each other. The coupler is a steel casting, and its main failure mode is fracture caused by fatigue cracks. In order to study the causes of coupler crack initiation and coupler fatigue strength, it is very meaningful to establish a coupler fatigue strength test bench.

Utility model content

The purpose of this utility model is to provide a railway vehicle coupler fatigue strength test bench, which can complete the fatigue strength test of the test coupler, the test cost is low, the test efficiency is high, and the test result is more real and reliable; at the same time, the strain of different parts of the coupler can be tested parameters; and the test has little influence on the surrounding environment.

A railway vehicle coupler fatigue strength test bench, comprising: a pair of couplers for testing, the two ends of the coupler are respectively fixedly installed on the left simulation mounting base and the right simulation mounting base; the left simulation mounting base is connected with a moving beam, which moves The beam is fixedly connected to the actuator, and the actuator is fixed on the reaction beam at the fixed end; the right analog mount is fixed on the adjustable mechanism through the connecting rod, and the adjustable mechanism can adjust the up and down position of the connecting rod and the end connected to it and/or left and right positions.

Further, in the railway vehicle coupler fatigue strength test bench as described above, the adjustable mechanism includes a tail support and a reaction seat, one end of the connecting rod is fixed on the tail support, and the tail support is installed on the reaction seat; A longitudinal chute is arranged on the reaction base, and the tail is supported and installed on the longitudinal chute, and a support frame capable of adjusting its height is installed on the reaction base.

Further, the railway vehicle coupler fatigue strength test bench as described above includes two parallel tracks, and the two ends of the two tracks respectively have the fixed end reaction beams, wherein the fixed end reaction beam on the left is connected to the The actuator is connected, and the moving beam is installed between two rails and can slide left and right along the two rails.

Further, in the aforementioned railway vehicle coupler fatigue strength test bench, the two rails are fixed on the foundation through the support base.

Furthermore, in the above-mentioned coupler fatigue strength test bench for railway vehicles, the foundation is a basin-shaped foundation, a pit is arranged on the foundation, and the two rails are laid on both sides of the pit.

Further, in the aforementioned railway vehicle coupler fatigue strength test bench, the adjustable mechanism is installed in the pit.

Beneficial effect:

First, on a test rig, the fatigue strength test of the railway vehicle coupler was completed. The test cost is low, the test is more convenient and fast, the pertinence is stronger, and the test efficiency is higher. And special test research can be carried out for key parts. The constraint mode and force loading are consistent with the actual line operation, and the obtained test data is more realistic, providing more reliable test data for the design and maintenance of the coupler.

Secondly, this test bench conducts tests through the assembly of two couplers connected to each other, which can greatly save the test cost. It also makes it possible to more realistically simulate the actual operation of the train line, making the test data more real and reliable.

Finally, during the test, the longitudinal load is mainly applied to the coupler.

Description of drawings

Fig. 1 is the main view structure schematic diagram of the utility model railway car coupler fatigue strength test bench;

Fig. 2 is the top view structure schematic diagram of the utility model railway car coupler fatigue strength test bench;

Fig. 3 is an A-A cross-sectional schematic diagram of the fatigue strength test bench for a railway vehicle coupler of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the technical solutions in the utility model are described clearly and completely below. Obviously, the described embodiments are some embodiments of the utility model, rather than all implementations example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1-3, the railway vehicle coupler fatigue strength test bench provided by the utility model includes: a pair of couplers 1 for testing, and the two ends of the coupler 1 are respectively fixedly installed on the left simulation mounting seat 2a and the right simulation installation on the seat 2b; the left analog mounting seat 2a is connected with a moving beam 3, the moving beam 3 is fixedly connected to the actuator 4, and the actuator 4 is fixed on the reaction beam 5 at the fixed end; the right analog mounting seat 2b is connected through the The rod 8 is fixed on an adjustable mechanism capable of adjusting the up and down position and/or the left and right position of the end connected to the connecting rod 8 .

Further, the adjustable mechanism includes a tail support 9 and a reaction seat 10, one end of the connecting rod 8 is fixed on the tail support 9, and the tail support 9 is installed on the reaction seat 10; the reaction seat 10 A longitudinal chute is arranged on the top, the tail support 9 is mounted on the longitudinal chute, and a support frame capable of adjusting its height is installed on the reaction force seat 10 .

Further, two rails 11a arranged in parallel are included, and the two ends of the two rails 11a respectively have the fixed-end reaction beam 5, wherein the fixed-end reaction beam 5 on the left is connected to the actuator 4, The moving beam 3 is installed between two rails 11a, and can slide left and right along the two rails 11a. The two rails 11 a are fixed on the foundation 11 through the support base 12 . The foundation 11 is a basin-shaped foundation, and a pit is arranged on the foundation 11, and the two rails 11a are laid on both sides of the pit. The adjustable mechanism is mounted in the pocket.

The specific composition of the above-mentioned coupler 1 is: after the two couplers 1 are connected and assembled, they are respectively installed on the left analog mounting base 2a and the right analog mounting base 2b, and the left analog mounting base 2a is installed and fixed on the mounting base of the moving beam. The right analog mount 2b is fixed on the tail support 9 by the connecting rod 8 .

Such a coupler assembly form is convenient, accurate and reliable to simulate the connection mode of the real coupler, and at the same time, it can better improve the experimental effect and save costs.

The specific structure of the above-mentioned foundation 11 is: the foundation 11 is a basin-shaped foundation, and is a rectangular structure, and there is a pit inside the rectangle, and the reaction force seat 10 is fixed on the ground of the pit, and T-shaped guide rails 11a are laid on both sides of the pit .

Such a basin-shaped foundation can save the height of the test space, and at the same time facilitate the assembly and disassembly of the coupler, and can also realize a multi-purpose one for testing other components.

The fixed-end reaction beam 5 is sleeved on two long pull rods 6, and each long pull rod 6 has two lock nuts 7, and the lock nuts 7 fix the fixed-end reaction beam 5 to limit its longitudinal movement along the long pull rods. 6 to move, one end of the actuator 4 is fixed in the middle of the fixed end reaction beam 5, the other end of the actuator 4 is connected to one side of the moving beam 3, and the other side of the moving beam 3 is fixed to the left analog mounting seat 2a of the coupler, The actuator 4 applies a longitudinal load to the moving beam 3, and then transmits it to the coupler simulation mount 2a.

In the test, a longitudinal load is applied by the actuator to the moving beam, which is transferred to the coupler dummy mount.

Working process and principle of the present utility model are:

After the two couplers are connected and assembled, they are respectively installed in the two coupler simulation mounts. One simulation mount is fixed on one side of the moving beam, and the other side of the moving beam is connected to the actuator, which applies the longitudinal load. It is sent to the moving beam, and then transferred to the coupler simulation mounting seat, and the actuator is fixed on the fixed end reaction beam. The reaction beam at the fixed end is sleeved on two long tie rods, and fixed by two pairs of lock nuts so that it cannot move longitudinally along the tie rods. Another coupler dummy mount is attached to the rear support via a link, constraining it longitudinally. The tail support is fixed on the reaction seat. During the test, the moving beam 3 is given a force by the actuator, and the moving beam 3 transmits the force to the coupler 1 through the left analog mounting seat 2a, and the right side of the coupler 1 adjusts the up and down position and position of the connecting rod 8 through the adjustable bracket. The left and right positions, and finally the offset of this position is transmitted to the right analog mounting base 2b through the connecting rod 8, and finally transmitted to the left side of the coupler 1 through the right analog mounting base 2b, so that the strain of the concerned parts of the coupling can be tested and the target number of times can be completed Carry out a flaw detection inspection of the coupler after loading.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (6)

1. a coupler of railway car testing table for fatigue strength, it is characterized in that, comprise: a pair hitch (1) of test, the two ends of hitch (1) are fixedly mounted on left simulation mount pad (2a) and right simulation mount pad (2b) respectively; Described left simulation mount pad (2a) is connected with trave lling girder (3), and trave lling girder (3) is fixedly connected with actuator (4), actuator (4) is fixed on stiff end reaction beam (5); Described right simulation mount pad (2b) is fixed on adjustable mechanism by connecting rod (8), and this adjustable mechanism can the upper-lower position of regulating connecting rod (8) connected one end and/or right position.

2. coupler of railway car testing table for fatigue strength according to claim 1, it is characterized in that, described adjustable mechanism comprises tail support (9), counter-force seat (10), one end of described connecting rod (8) is fixed on tail support (9) and connects, and tail support (9) is arranged on counter-force seat (10); Described counter-force seat (10) is provided with longitudinal chute, described tail support (9) be arranged on this longitudinal chute, described counter-force seat (10) is provided with can regulate its height bracing frame.

3. coupler of railway car testing table for fatigue strength according to claim 2, it is characterized in that, comprise two tracks (11a) be arranged in parallel, the two ends of these two tracks (11a) have described stiff end reaction beam (5) respectively, wherein, the stiff end reaction beam (5) on the left side is connected with described actuator (4), and described trave lling girder (3) to be arranged between two tracks (11a) and can to horizontally slip along described two tracks (11a).

4. coupler of railway car testing table for fatigue strength according to claim 3, is characterized in that, described two tracks (11a) are fixed on ground (11) by base for supporting (12).

5. coupler of railway car testing table for fatigue strength according to claim 4, it is characterized in that, described ground (11) is basin shape ground, and this ground (11) is provided with a pit, and described two tracks (11a) are laid on the both sides of this pit.

6. coupler of railway car testing table for fatigue strength according to claim 5, is characterized in that, described adjustable mechanism is arranged in described pit.