CN220819621U - Elastic sling fatigue test device - Google Patents
Elastic sling fatigue test device Download PDFInfo
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- CN220819621U CN220819621U CN202322089949.0U CN202322089949U CN220819621U CN 220819621 U CN220819621 U CN 220819621U CN 202322089949 U CN202322089949 U CN 202322089949U CN 220819621 U CN220819621 U CN 220819621U
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims description 16
- 238000012360 testing method Methods 0.000 abstract description 12
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses an elastic sling fatigue test device, which relates to elastic sling test equipment, and comprises: the first installation assembly comprises a first installation arm, a first wire clamp, a first angle adjusting device and a first linear driving device, wherein the telescopic end of the first linear driving device is connected with the first installation arm, the first wire clamp is arranged on the first installation arm through the first angle adjusting device, and the first end of the elastic sling is clamped on the first wire clamp; the second installation assembly comprises a second installation arm, a second angle adjusting device and a second wire clamp, the second wire clamp is arranged on the second installation arm through the second angle adjusting device, and the second end of the elastic sling is clamped on the second installation arm; and the controller is electrically connected with the first linear driving device. The utility model is additionally provided with the first angle adjusting device and the second angle adjusting device, which are used for adjusting the static angle of the elastic sling, so that fatigue tests can be carried out under the condition of different static angles.
Description
Technical Field
The utility model relates to the technical field of elastic sling testing equipment, in particular to an elastic sling fatigue test device.
Background
The overhead contact system is an important component of an electrified railway, and a pantograph on an electric locomotive is directly contacted with the overhead contact system to acquire current, so that electric power required by operation is provided for a train. The elastic sling is a key component of the elastic chain type suspension contact net and is used for increasing the elasticity of positioning points and reducing the elasticity non-uniformity of the contact net, so that the pantograph can realize stable and continuous current taking under the high-speed running condition.
The patent number CN114002080A discloses an elastic sling fatigue test device and a method, wherein the device comprises: the first linear driving device is connected with the first mounting arm to drive the first mounting arm to reciprocate along the vertical direction, and one end of the elastic sling is clamped on the first wire clamp; the second installation assembly comprises a second installation arm and a second wire clamp, the second wire clamp is arranged on the second installation arm, and the other end of the elastic sling is clamped on the second installation arm; and the controller is in communication connection with the first linear driving device. In the specific use process, the first linear driving device is controlled to move through the controller, so that the elastic sling fatigue test can be completed.
However, both clamps in this construction are fixed to the mounting arm, however in field use the elastic slings have different static angles after installation, and variations in angle may affect their fatigue life. However, the above patent only can test elastic slings at one angle, and has certain limitations.
Therefore, there is a need in the art for an elastic sling fatigue test device that addresses the above-described issues.
Disclosure of utility model
The utility model aims to provide an elastic sling fatigue test device which is used for solving the technical problems in the prior art and can test the fatigue strength of the elastic sling under different static angles.
In order to achieve the above object, the present utility model provides the following solutions:
the utility model discloses an elastic sling fatigue test device, which comprises:
The first installation assembly comprises a first installation arm, a first wire clamp, a first angle adjusting device and a first linear driving device, wherein the telescopic end of the first linear driving device is connected with the first installation arm, the telescopic end of the first linear driving device is used for driving the first installation arm to reciprocate along the vertical direction, the first wire clamp is arranged on the first installation arm through the first angle adjusting device, the first angle adjusting device is used for adjusting the angle of the first wire clamp, and the first end of the elastic sling is clamped on the first wire clamp;
The second installation assembly comprises a second installation arm, a second angle adjusting device and a second wire clamp, the second wire clamp is arranged on the second installation arm through the second angle adjusting device, the second angle adjusting device is used for adjusting the angle of the second wire clamp, and the second end of the elastic sling is clamped on the second installation arm;
and the first linear driving device is electrically connected with the controller.
Preferably, the first angle adjusting device comprises a first bolt and a first nut, the first bolt can pass through the first mounting arm and the first wire clamp, and the first bolt is in threaded connection with the first nut;
The second angle adjusting device comprises a second bolt and a second nut, the second bolt can penetrate through the second mounting arm and the second wire clamp, and the second bolt is in threaded connection with the second nut.
Preferably, the elastic sling further comprises a horizontal tension loading device, wherein the loading end of the horizontal tension loading device can be connected with the second end of the elastic sling, the loading end of the horizontal tension loading device is used for applying horizontal tension to the elastic sling, and the horizontal tension loading device is electrically connected with the controller.
Preferably, the device further comprises a first force detection device, a second force detection device and a display, wherein the first force detection device is used for detecting a first loading force applied to the elastic sling by the first mounting arm, the second force detection device is used for detecting the horizontal tension applied to the elastic sling by the horizontal tension loading device, and the first force detection device, the second force detection device and the display are all electrically connected with the controller.
Preferably, the sling adjusting device further comprises a sling adjusting device, wherein the sling adjusting device comprises two adjusting wheels, and the elastic sling can be penetrated out from between the two adjusting wheels.
Preferably, the elastic sling further comprises at least one third installation component, at least one third installation component is arranged between the first installation component and the second installation component, at least one third installation component is arranged along the length direction of the elastic sling, the third installation component comprises a third installation arm and a third linear driving device, the third linear driving device is connected with the third installation arm and is used for driving the third installation arm to reciprocate along the vertical direction, the elastic sling sequentially penetrates through each third installation arm, and each third linear driving device is electrically connected with the controller.
Preferably, the third installation component further comprises a first pulley and a second pulley, the first pulley and the second pulley are vertically and oppositely arranged on the third installation arm along the vertical direction, a gap for the elastic sling to pass through is reserved between the first pulley and the second pulley, and the elastic sling sequentially passes through the gap.
Preferably, the third mounting assembly further comprises third force detection means for detecting a second loading force exerted by the third mounting arm on the elastic sling.
Preferably, the second mounting arm is a fixed bracket.
Preferably, the second mounting assembly further comprises a second linear driving device, the second linear driving device is connected with the second mounting arm, the second linear driving device is used for driving the second mounting arm to reciprocate along the vertical direction, and the second linear driving device is electrically connected with the controller.
Compared with the prior art, the utility model has the following technical effects:
according to the utility model, a corresponding fatigue life test can be carried out aiming at the service state of the elastic sling, so that the service life of the elastic sling in a corresponding service environment is predicted;
Further, by additionally arranging the first angle adjusting device and the second angle adjusting device, the static angle of the elastic sling can be adjusted, and the service lives of the elastic slings with different static angles can be tested.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a fatigue test apparatus for elastic slings according to an embodiment of the present utility model;
In the figure: 1-a first mounting arm; 2-a first wire clip; 3-a first linear drive; 4-a second mounting arm; 5-a second wire clip; 6-a controller; 7-a horizontal tension loading device; 8-a first force detecting means; 9-a second force detection device; 10-a display; 11-a third mounting arm; 12-a third linear drive; 13-a first pulley; 14-a second pulley; 15-a third force detection device; 16-data lines; 17-elastic slings; 18-a first angle adjustment device; 19-a second angle adjustment means; 20-sling adjustment device.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide an elastic sling fatigue test device which is used for solving the technical problems in the prior art and can test the fatigue strength of the elastic sling under different static angles.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Embodiment 1,
As shown in fig. 1, this embodiment provides an elastic sling fatigue test device, including:
A first mounting assembly comprising a first mounting arm 1, a first wire clamp 2, a first angle adjustment device 18 and a first linear drive 3. The telescopic end of the first linear driving device 3 is connected with the lower end of the first mounting arm 1, and the telescopic end of the first linear driving device 3 is used for driving the first mounting arm 1 to reciprocate along the vertical direction. The first wire clamp 2 is arranged on the first mounting arm 1 by a first angle adjusting device 18, the first angle adjusting device 18 being used for adjusting the angle of the first wire clamp 2. The first end of the elastic sling 17 is clamped to the first wire clamp 2.
The second installation component, the second installation component includes second installation arm 4, second angle adjusting device 19 and second fastener 5, and second fastener 5 passes through second angle adjusting device 19 to be set up on second installation arm 4, and second angle adjusting device 19 is used for adjusting the angle of second fastener 5, and the second end of elastic sling 17 presss from both sides tightly on second installation arm 4.
The controller 6, the first linear driving device 3 is electrically connected with the controller 6, and the controller 6 can be any existing PLC controller 6 or singlechip controller 6.
When the fatigue test of the elastic sling 17 of the high-speed railway overhead line system is required, firstly, the vibration displacement time-course data of the first position of the elastic sling 17 is acquired. Then, the horizontal tension of the elastic slings 17 is set, and the distance between the first mounting arm 1 and the second mounting arm 4 is arranged as required; the vibration displacement time-course data is converted into control codes of the motion displacement and the frequency of the first linear driving device 3, and the controller 6 controls the first linear driving device 3 to work through the control codes.
In this embodiment, the first angle adjusting device 18 includes a first bolt and a first nut, the first bolt can pass through the first mounting arm 1 and the first wire clip 2, corresponding through holes for the first bolt to pass through are provided on the first mounting arm 1 and the first wire clip 2, and then the first bolt is in threaded connection with the first nut, so that the first mounting arm 1 and the first wire clip 2 can be clamped. When the angle of the first wire clamp 2 needs to be adjusted, the first nut is only required to be unscrewed, then the angle of the first wire clamp 2 is properly adjusted according to actual needs, and then the first nut is screwed up to realize the positioning of the first wire clamp 2.
Similarly, the second angle adjusting device 19 includes a second bolt and a second nut, where the second bolt can pass through the second mounting arm 4 and the second wire clamp 5, corresponding through holes through which the second bolt passes are formed in the second mounting arm 4 and the second wire clamp 5, and then the second bolt is in threaded connection with the second nut, so that the second mounting arm 4 and the second wire clamp 5 can be clamped. The working principle of the second angle adjusting device 19 is the same as that of the first angle adjusting device 18, and thus will not be described in detail.
In this embodiment, the elastic sling fatigue test device further includes a horizontal tension loading device 7, the loading end of the horizontal tension loading device 7 can be connected to the second end of the elastic sling 17 (i.e. the end near the second mounting arm 4), the loading end of the horizontal tension loading device 7 is used for applying horizontal tension to the elastic sling 17, and the horizontal tension loading device 7 is electrically connected to the controller 6. For the specific structure of the horizontal tension loading device 7, the horizontal tension loading device 7 can be selected from the existing hydraulic cylinders, the hydraulic cylinders are horizontally arranged, the telescopic ends of the hydraulic cylinders (namely the loading ends of the horizontal tension loading device 7) are connected with the second ends of the elastic slings 17, and the stretching force in the horizontal direction is provided for the elastic slings 17 through the telescopic action of the hydraulic cylinders.
In a specific use process, the first wire clamp 2 clamps one end of the elastic sling 17 first, then applies horizontal force to the other end of the elastic sling 17 through the horizontal tension loading device 7, and after the elastic sling 17 reaches the required horizontal tension, the horizontal tension loading device 7 stops applying force, and at the same time, the second wire clamp 5 clamps the other end of the elastic sling 17.
In this embodiment, in order to facilitate monitoring the whole test process, the elastic sling fatigue test device further includes a first force detecting device 8, a second force detecting device 9 and a display 10, wherein the first force detecting device 8 is used for detecting a first loading force applied to the elastic sling 17 by the first mounting arm 1, the second force detecting device 9 is used for detecting a horizontal tension applied to the elastic sling 17 by the horizontal tension loading device 7, and the first force detecting device 8, the second force detecting device 9 and the display 10 are all electrically connected with the controller 6.
Specifically, the first force detecting device 8 and the second force detecting device 9 are existing force sensors, and the first mounting arm 1, the first force detecting device 8 and the first linear driving device 3 are connected in sequence; the elastic slings 17 are connected in sequence to one end of the second mounting arm 4, the second force detecting means 9 and the horizontal tension loading means 7. The first linear drive 3 is a linear motor. The first force detecting device 8, the second force detecting device 9, the display 10, the first linear driving device 3 and the horizontal tension loading device 7 are electrically connected with the controller 6 through data lines 16, the operation of each device is uniformly controlled by the controller 6, and corresponding parameters can be displayed on the display 10.
In this embodiment, the elastic sling fatigue test device further includes a sling adjusting device 20, where the sling adjusting device 20 is located at a side of the horizontal tension loading device 7 near the second mounting arm 4. The sling adjustment device 20 comprises two adjustment wheels, which are arranged up and down, between which the elastic sling 17 can be threaded. The purpose of the sling adjustment means 20 is to allow for a position adjustment of the elastic sling 17 so that it can be better connected to the horizontal tension loading means 7.
In this embodiment, the elastic sling fatigue test device further includes at least one third installation component, the at least one third installation component is disposed between the first installation component and the second installation component, and the at least one third installation component is disposed along the length direction of the elastic sling 17, the third installation component includes a third installation arm 11 and a third linear driving device 12, the third linear driving device 12 is connected with the third installation arm 11, the third linear driving device 12 is used for driving the third installation arm 11 to reciprocate along the vertical direction, the elastic sling 17 sequentially passes through each third installation arm 11, and each third linear driving device 12 is electrically connected with the controller 6. The number of the third mounting assemblies may be one or more, and may be set according to the corresponding service environment of the elastic slings 17.
In this embodiment, in order to reduce friction between the elastic mounting arm and the elastic sling 17, the third mounting assembly further includes a first pulley 13 and a second pulley 14, the first pulley 13 and the second pulley 14 are disposed on the third mounting arm 11 vertically opposite to each other, and a gap for the elastic sling 17 to pass through is left between the first pulley 13 and the second pulley 14, and the elastic sling 17 sequentially passes through the gaps in each third mounting assembly, so as to realize that the elastic sling 17 sequentially passes through each third mounting arm 11.
In this embodiment, the third mounting assembly further includes a third force detecting device 15, the third mounting arm 11, the third force detecting device 15 and the third linear driving device 12 are sequentially connected, and the third force detecting device 15 is used for detecting a second loading force applied to the elastic sling 17 by the third mounting arm 11.
In this embodiment, the second mounting arm 4 is a fixed bracket, and the horizontal tension loading device 7 is disposed on the fixed bracket.
Embodiment II,
The embodiment provides an elastic sling fatigue test device, and the technical characteristics of the embodiment are basically the same as those disclosed in the first embodiment, and the difference is that:
In the first embodiment, the second mounting arm 4 is a fixed bracket, and the second mounting arm 4 does not move.
In this embodiment, the second mounting assembly further includes a second linear driving device, where the second linear driving device is connected to the second mounting arm 4, and the second linear driving device is used to drive the second mounting arm 4 to reciprocate along the vertical direction, and the second linear driving device is electrically connected to the controller 6.
In the specific use process of the elastic sling fatigue test device provided by the embodiment, firstly, vibration displacement time-course data of the first position of the elastic sling 17 is obtained through simulation calculation or field measurement, the vibration displacement time-course data is converted into control codes of motion displacement and frequency of the first linear driving device 3, the second linear driving device and the third linear driving device 12, and the controller 6 controls the first linear driving device 3, the second linear driving device and the third linear driving device 12 to work through the control codes, so that vertical vibration displacement excitation in fig. 1 is applied to the elastic sling 17, and vibration load of the elastic sling 17 in a service state is simulated. And the number of load applied is recorded and displayed on the display 10 in real time, and the test is carried out until the manual stop or the elastic slings 17 are broken. After the test is interrupted, the number of loads is accumulated until the elastic slings 17 break when the test is continued. The number of loading times of the elastic sling 17 under the set test load is the fatigue life of the elastic sling 17 under the test load.
It should be noted that the first position is selected according to actual needs, and the horizontal tension of the elastic sling 17 is also selected according to actual needs.
The principles and embodiments of the present utility model have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present utility model and its core ideas; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (10)
1. An elastic sling fatigue test device, comprising:
The first installation assembly comprises a first installation arm, a first wire clamp, a first angle adjusting device and a first linear driving device, wherein the telescopic end of the first linear driving device is connected with the first installation arm, the telescopic end of the first linear driving device is used for driving the first installation arm to reciprocate along the vertical direction, the first wire clamp is arranged on the first installation arm through the first angle adjusting device, the first angle adjusting device is used for adjusting the angle of the first wire clamp, and the first end of the elastic sling is clamped on the first wire clamp;
The second installation assembly comprises a second installation arm, a second angle adjusting device and a second wire clamp, the second wire clamp is arranged on the second installation arm through the second angle adjusting device, the second angle adjusting device is used for adjusting the angle of the second wire clamp, and the second end of the elastic sling is clamped on the second installation arm;
and the first linear driving device is electrically connected with the controller.
2. The elastic sling fatigue test device according to claim 1, wherein: the first angle adjusting device comprises a first bolt and a first nut, the first bolt can penetrate through the first mounting arm and the first wire clamp, and the first bolt is in threaded connection with the first nut;
The second angle adjusting device comprises a second bolt and a second nut, the second bolt can penetrate through the second mounting arm and the second wire clamp, and the second bolt is in threaded connection with the second nut.
3. The elastic sling fatigue test device according to claim 1, wherein: the horizontal tension loading device is characterized by further comprising a horizontal tension loading device, the loading end of the horizontal tension loading device can be connected with the second end of the elastic sling, the loading end of the horizontal tension loading device is used for applying horizontal tension to the elastic sling, and the horizontal tension loading device is electrically connected with the controller.
4. A resilient sling fatigue test device as defined in claim 3, wherein: the device comprises a controller, a first mounting arm, a second mounting arm, a first force detection device, a second force detection device and a display, wherein the first force detection device is used for detecting a first loading force applied to the elastic sling by the first mounting arm, the second force detection device is used for detecting the horizontal tension applied to the elastic sling by the horizontal tension loading device, and the first force detection device, the second force detection device and the display are all electrically connected with the controller.
5. The elastic sling fatigue test device according to claim 1, wherein: the sling adjusting device comprises two adjusting wheels, and the elastic sling can be penetrated out from between the two adjusting wheels.
6. The elastic sling fatigue test device according to claim 1, wherein: the elastic sling is characterized by further comprising at least one third installation component, wherein the at least one third installation component is arranged between the first installation component and the second installation component, the at least one third installation component is arranged along the length direction of the elastic sling, the third installation component comprises a third installation arm and a third linear driving device, the third linear driving device is connected with the third installation arm and is used for driving the third installation arm to reciprocate along the vertical direction, the elastic sling sequentially penetrates through each third installation arm, and each third linear driving device is electrically connected with the controller.
7. The elastic sling fatigue test device according to claim 6, wherein: the third installation component still includes first pulley and second pulley, first pulley with the second pulley along vertical direction relatively set up in on the third installation arm from top to bottom, just first pulley with leave between the second pulley and supply the clearance that the elastic sling passed, the elastic sling passes in proper order the clearance.
8. The elastic sling fatigue test device according to claim 6, wherein: the third mounting assembly further comprises third force detection means for detecting a second loading force exerted by the third mounting arm on the elastic sling.
9. The elastic sling fatigue test device according to claim 1, wherein: the second mounting arm is a fixed bracket.
10. The elastic sling fatigue test device according to claim 1, wherein: the second mounting assembly further comprises a second linear driving device, the second linear driving device is connected with the second mounting arm and used for driving the second mounting arm to reciprocate along the vertical direction, and the second linear driving device is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322089949.0U CN220819621U (en) | 2023-08-04 | 2023-08-04 | Elastic sling fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322089949.0U CN220819621U (en) | 2023-08-04 | 2023-08-04 | Elastic sling fatigue test device |
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| Publication Number | Publication Date |
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| CN220819621U true CN220819621U (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322089949.0U Active CN220819621U (en) | 2023-08-04 | 2023-08-04 | Elastic sling fatigue test device |
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| CN (1) | CN220819621U (en) |
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2023
- 2023-08-04 CN CN202322089949.0U patent/CN220819621U/en active Active
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Effective date of registration: 20240509 Address after: 610031 Xipu Campus of Southwest Jiaotong University, Pidu District, Chengdu City, Sichuan Province Patentee after: SOUTHWEST JIAOTONG University Country or region after: China Patentee after: China National Railway Group Co.,Ltd. Address before: 610031 north section of two ring road, Sichuan, Chengdu Patentee before: SOUTHWEST JIAOTONG University Country or region before: China |