CN216082359U

CN216082359U - Railway I type bullet strip fatigue test device

Info

Publication number: CN216082359U
Application number: CN202121611606.0U
Authority: CN
Inventors: 王增玉
Original assignee: Linzhou Public Service Railway Equipment Manufacturing Co ltd
Current assignee: Linzhou Public Service Railway Equipment Manufacturing Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-03-18
Anticipated expiration: 2031-07-15

Abstract

The utility model relates to a railway I-type elastic strip fatigue test device, which comprises a workbench, wherein a test box is arranged on the top surface of the test box, the front end and the rear end of the test box are both open and can be opened and closed and are connected with transparent box doors, the inner wall of the test box is provided with a sound absorption layer, the outer wall of the test box is provided with a sound insulation layer, the outer top of the test box is provided with a salt fog box, the outer side part of the test box is provided with a control center, the inner top of the test box is provided with a salt fog concentration sensor and a plurality of hydraulic cylinders, the bottoms of the left side and the right side of the salt fog box are both communicated with a plurality of conveying pipelines, the tail ends of the conveying pipelines are both stretched into the adjacent side part of the test box and fixedly connected with nozzles, the hydraulic cylinders are uniformly distributed at intervals, piston rods of the hydraulic cylinders are all downward and are fixedly connected with pressure heads, pressure sensors are arranged at the joints of the pressure heads and the piston rods of the corresponding hydraulic cylinders, and a clamping fixture matched with the I-type elastic strips is arranged at the bottom of the test box below each pressure head. The utility model can effectively absorb sound and reduce noise, can build a proper atmosphere corrosion environment and can simultaneously carry out fatigue tests on a plurality of elastic strips, thereby ensuring the test efficiency and quality.

Description

Railway I type bullet strip fatigue test device

Technical Field

The utility model belongs to the technical field of railway elastic strips, and particularly relates to a railway I-type elastic strip fatigue test device.

Background

Railway rails are components that support locomotives and the direction of locomotives and are secured to the sleepers of the track bed by resilient fasteners. The buckling and pressing piece of the elastic fastener is mainly an elastic strip, and the buckling and pressing piece is used for generating buckling and pressing force to act on the rail through bending and twisting deformation of the elastic strip, so that reliable connection between the steel rails is effectively ensured for a long time, the integrity of the rail is kept as much as possible, the steel rails are prevented from moving longitudinally and transversely relative to the sleeper, and the rail gauge is ensured to be normal, so that the running safety of rail vehicles is ensured. In addition, the contact between the train wheels and the steel rails is rigid, so that vibration cannot be avoided, and the special elastic structure of the elastic strips enables the elastic strips to absorb impact energy generated when the train runs, so that the shock absorption effect is achieved.

Currently, the types of elastic strips are many, and mainly include types A, B, C4, I, II, III, W1, W2 and the like. No matter which kind of elastic strip works under repeated alternating stress, needs to bear various effects such as bending, torsion, fatigue and corrosion, and also needs to bear extremely high instantaneous impact load when a vehicle passes through, so that the performance requirement on the elastic strip is very strict, and various performances of the elastic strip need to be tested and detected in the production and manufacturing process of the elastic strip. When the fatigue strength of the I-type elastic strip is tested, the elastic strip is usually fixed on a matched mould, then the toe end of the elastic strip is subjected to assembling displacement and dynamic displacement on the basis, and whether the elastic strip is broken or cracked after a certain number of tests under fixed loading frequency is observed. However, in an actual test, only one clamping fixture on one fatigue test device is often used, only one fatigue test of a single elastic strip can be performed at a time, the detection efficiency is low, the test is an open test, a suitable atmosphere corrosion environment can not be created, the test result is not accurate enough and effective, great noise pollution is easily generated when the pressing device operates, the comfort level of the surrounding environment is greatly reduced, the environment is not environment-friendly and practical enough, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a railway i-type elastic bar fatigue testing apparatus capable of effectively absorbing sound and reducing noise, creating a suitable air corrosion environment, and performing a fatigue test on a plurality of elastic bars at the same time, so as to solve the above problems.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a railway I type bullet strip fatigue test device, includes the workstation, the proof box has set firmly on the top surface of workstation, both ends are all uncovered and can open and shut and be connected with transparent chamber door around the proof box, the inner wall of proof box is equipped with sound absorbing layer, outer wall is equipped with the puigging, be equipped with control center on the outer top of proof box, the outside portion, be equipped with salt fog concentration sensor and a plurality of pneumatic cylinder on the interior top, the bottom of salt fog case left and right sides all communicates has a plurality of pipeline, pipeline's tail end all stretches into neighbouring proof box lateral part and fixedly connected with nozzle, the nozzle inclines to set up downwards, the pneumatic cylinder is rectangle array interval equipartition and its piston rod all down and fixedly connected with pressure head, the pressure head is equipped with pressure sensor with the junction of the piston rod of corresponding pneumatic cylinder, pressure sensor, Salt fog concentration sensor all is connected with control center electricity, and the proof box bottom of every pressure head below all is equipped with the mould with I type bullet strip looks adaptation.

Preferably, the workstation is made by the concrete, the lateral part and the bottom parcel of workstation have foamed aluminum plate, foamed aluminum plate's bottom is equipped with the rubber slipmat.

Preferably, the test chamber and the transparent chamber door are both made of transparent acrylic plates.

Preferably, the sound absorption layer is sound absorption cotton.

Preferably, the soundproof layer is soundproof damping felt.

Preferably, a material pump and a flow control valve are arranged on the conveying pipeline.

The utility model has the beneficial effects that: the utility model has reasonable design and simple structure, and the arrangement of the test box can form a relatively closed test environment, thereby being more beneficial to noise reduction and environmental protection and providing the required test environment. The arrangement of the two transparent box doors which can be connected with the test box in an opening and closing manner facilitates the situation that the elastic strip is taken and placed by an operator before and after the test and the elastic strip is monitored in the test process. Through the cooperation of setting up of sound-absorbing layer on the proof box inner wall and the puigging on the outer wall, can strengthen the proof box greatly inhale the sound and give sound insulation the performance of making an uproar, can play good and effectual noise reduction effect in the test process to the noise pollution that greatly reduced test operation produced guarantees the comfort level of surrounding environment, makes whole test device environmental protection more practical. Through the cooperation of setting up of salt fog case, pipeline, nozzle, salt fog concentration sensor and control center, can build out the salt fog corrosive environment of appointed concentration in the test box, easy operation is convenient, more can satisfy experimental needs in a flexible way, provides more real experimental environment for the experiment to improve the accurate validity of test result greatly. Through the cooperation that sets up of multiunit pneumatic cylinder, pressure sensor, pressure head and mould, can carry out the fatigue test of many bullet strips simultaneously in a test to improve test efficiency greatly, labour saving and time saving more is favorable to reducing test cost.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the test chamber of the present invention.

Reference numbers in the figures: the test bench comprises a workbench, a test box, a transparent box door, a sound absorption layer, a sound insulation layer, a salt fog box, a conveying pipeline, a nozzle, a control center, a salt fog concentration sensor, a hydraulic cylinder, a pressure sensor, a pressure head, a clamping fixture, a foamed aluminum plate, a rubber anti-skid pad, a material pump and a flow control valve, wherein the workbench is 1, the test box is 2, the transparent box door is 3, the sound absorption layer is 4, the sound insulation layer is 5, the salt fog box is 6, the conveying pipeline is 7, the nozzle is 8, the control center is 9, the salt fog concentration sensor is 10, the hydraulic cylinder is 11, the pressure sensor is 12, the pressure head is 13, the clamping fixture is 14, the foamed aluminum plate is 15, the rubber anti-skid pad is 16, the material pump is 17, and the flow control valve is 18.

Detailed Description

The utility model is described in further detail below with reference to the following figures and detailed description:

as shown in figures 1 and 2, the fatigue test device for the railway I-shaped elastic strip comprises a workbench 1, wherein a test box 2 is fixedly arranged on the top surface of the workbench 1. The front end and the rear end of the test box 2 are both open and can be connected with a transparent box door 3 in an opening and closing manner. The inner wall of the test box 2 is provided with a sound absorption layer 4, and the outer wall is provided with a sound insulation layer 5. The outer top of the test box 2 is provided with a salt fog box 6, the outer side part is provided with a control center 9, and the inner top is provided with a salt fog concentration sensor 10 and a plurality of hydraulic cylinders 11. The bottom of the left side and the bottom of the right side of the salt spray box 6 are both communicated with a plurality of conveying pipelines 7, the tail ends of the conveying pipelines 7 extend into the side part of the adjacent test box 2 and are fixedly connected with nozzles 8, and the nozzles 8 are arranged in a downward inclined mode. The hydraulic cylinders 11 are uniformly distributed at intervals in a rectangular array, piston rods of the hydraulic cylinders 11 face downwards and are fixedly connected with pressure heads 13, pressure sensors 12 are arranged at the joints of the pressure heads 13 and the corresponding piston rods of the hydraulic cylinders 11, the pressure sensors 12 and the salt mist concentration sensor 10 are electrically connected with the control center 9, and a clamping fixture 14 matched with the I-shaped elastic strip is arranged at the bottom of the test box 2 below each pressure head 13;

the test box 2 can form a relatively closed test environment, and is more favorable for noise reduction and environmental protection and provides a required test environment. The arrangement of the two transparent box doors 3 which are connected with the test box 2 in an openable and closable manner facilitates the situation that operators take and place the elastic strips before and after the test and monitor the elastic strips in the test process. Through the cooperation of the arrangement of the sound absorbing layer 4 on the inner wall of the test box 2 and the sound insulating layer 5 on the outer wall, the performance of noise absorption and noise reduction of the test box 2 can be greatly enhanced, a good and effective noise reduction effect can be achieved in the test process, so that the noise pollution generated by the greatly reduced test operation can be avoided, the comfort level of the surrounding environment is ensured, and the whole test device is more environment-friendly and practical. Through the cooperation of setting up of salt fog case 6, pipeline 7, nozzle 8, salt fog concentration sensor 10 and control center 9, can build out the salt fog corrosive environment of appointed concentration in proof box 2, easy operation is convenient, more can satisfy experimental needs in a flexible way, provides truer test environment for the experiment to improve the accurate validity of test result greatly. Through the cooperation of setting up of multiunit pneumatic cylinder 11, pressure sensor 12, pressure head 13 and mould 14, can carry out the fatigue test of many bullet strips simultaneously in a test to improve test efficiency greatly, labour saving and time saving more is favorable to reducing test cost. The control center 9 and the clamping fixture 14 are all in the prior art, and are not described in detail herein.

In this embodiment, the working platform 1 is made of concrete, the side part and the bottom part of the working platform 1 are wrapped with foamed aluminum plates 15, and the bottom of the foamed aluminum plates 15 is provided with rubber anti-skid pads 16. The concrete has the advantages of high strength, low cost, convenient processing and manufacturing and the like, the foamed aluminum plate 15 is made of foamed aluminum and has the properties of light weight, high specific stiffness, high damping and shock absorption performance, impact energy absorption rate, easy installation and the like, the rubber anti-skid pad 16 is made of rubber tree collected latex and has good wear resistance and anti-skid performance, so that when the concrete is actually used, the integral strength and damping and shock resistance performance can be effectively enhanced through the arrangement and the matching of the workbench 1 and the foamed aluminum plate 15 wrapped on the workbench, the adverse effect of the vibration generated by the device during the operation on the surrounding environment can be favorably reduced, the comfort level of the surrounding environment is further improved, the adverse effect of the factors such as the vibration of the surrounding environment on the test operation can be effectively avoided, the friction force between the whole device and the ground can be further enhanced through the arrangement of the rubber anti-skid pad 16, and the device can be placed more stably and reliably, therefore, the working stability of the device is greatly improved, the efficiency and the quality of test operation are more favorably ensured, and the accuracy and the effectiveness of test results are improved.

In this embodiment, proof box 2 and transparent chamber door 3 are made by transparent ya keli board, and transparent ya keli board has advantages such as resistant time and acid and alkali resistance can be good, longe-lived, impact resistance is strong, and proof box 2 and transparent chamber door 3 all adopt transparent ya keli board, can guarantee the effective life of whole proof box under the experimental environment of salt fog, do not influence the monitoring effect of transparent chamber door 3 again.

In this embodiment, sound absorbing layer 4 is cotton for inhaling the sound, and it has good inhale the sound and fall make an uproar, workable, corrosion-resistant performance etc. can effectively reduce the noise pollution of test process, can guarantee its life under salt fog corrosion test environment again, makes the device environmental protection more practical. Puigging 5 is syllable-dividing damping felt, and it has good sound insulation performance and the characteristics of easily installing, and convenient to use is convenient for cooperate proof box 2 to play further syllable-dividing and fall the effect of making an uproar, guarantees proof box 2's the noise reduction effect.

In this embodiment, the feed pump 17 and the flow control valve 18 are disposed on the delivery pipe 7, so as to facilitate the input of the salt spray.

The working principle of the utility model is as follows: when the utility model is used, the transparent box door 3 is firstly opened, and an elastic strip is fixed on each clamping fixture 14. After the salt fog box is fixed, the transparent box door 3 is closed, the material pump 17 is operated, the flow control valve 18 is opened, and salt fog with specified concentration is input into the test box 2 through the arrangement and the cooperation of the salt fog box 6, the conveying pipeline 7, the nozzle 8, the salt fog concentration sensor 10 and the control center 9, so that a proper salt fog corrosion environment is created for the test. Then, each hydraulic cylinder 11 is operated to make the piston rod of the hydraulic cylinder 11 do periodic telescopic movement, and the pressure head 13 is used for repeatedly pressing and measuring the toe end of the corresponding elastic strip, so that the fatigue test of the elastic strip is completed in a matching manner.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A railway I-shaped elastic strip fatigue test device comprises a workbench and is characterized in that a test box is fixedly arranged on the top surface of the workbench, the front end and the rear end of the test box are both open and can be opened and closed to be connected with transparent box doors, a sound absorption layer is arranged on the inner wall of the test box, a sound insulation layer is arranged on the outer wall of the test box, a salt fog box is arranged on the outer top of the test box, a control center is arranged on the outer side part of the test box, a salt fog concentration sensor and a plurality of hydraulic cylinders are arranged on the inner top of the test box, a plurality of conveying pipelines are communicated with the bottoms of the left side and the right side of the salt fog box, the tail ends of the conveying pipelines extend into the side part of the adjacent test box and are fixedly connected with nozzles, the nozzles are arranged in a downward inclined mode, the hydraulic cylinders are uniformly distributed at intervals in a rectangular array, piston rods of the hydraulic cylinders are downward and fixedly connected with pressure heads, and pressure sensors are arranged at the joints of the pressure heads and the piston rods of the corresponding hydraulic cylinders, pressure sensor, salt fog concentration sensor all are connected with the control center electricity, and the proof box bottom of every pressure head below all is equipped with the mould with I type bullet strip looks adaptation.

2. The railway type I elastic strip fatigue test device as claimed in claim 1, wherein the workbench is made of concrete, the side part and the bottom part of the workbench are wrapped with foamed aluminum plates, and rubber anti-slip pads are arranged at the bottoms of the foamed aluminum plates.

3. The fatigue testing device for railway type i spring bars as claimed in claim 1, wherein said test box and said transparent box door are made of transparent acrylic plate.

4. The railway type i spring bar fatigue test device of claim 1, wherein the sound absorbing layer is sound absorbing cotton.

5. The railway type i spring bar fatigue test device of claim 1, wherein the sound insulation layer is a sound insulation damping felt.

6. The fatigue testing device for I-shaped elastic strips of railways as claimed in claim 1, wherein a material pump and a flow control valve are arranged on the conveying pipeline.