CN108254170B - Fatigue test device for tension compensation of contact net - Google Patents
Fatigue test device for tension compensation of contact net Download PDFInfo
- Publication number
- CN108254170B CN108254170B CN201810030065.9A CN201810030065A CN108254170B CN 108254170 B CN108254170 B CN 108254170B CN 201810030065 A CN201810030065 A CN 201810030065A CN 108254170 B CN108254170 B CN 108254170B
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 96
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000009776 industrial production Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a fatigue test device for tension compensation of a contact net, which is used for testing the tension compensation device, and comprises a first counterweight mechanism, a moment balancing mechanism and a traction mechanism arranged on a support frame; under the condition of testing the tension compensation device, the supporting frame is used for fixing the first tension compensation device and the moment balance mechanism on two sides of the traction mechanism; the first weight mechanism is connected with the first tension compensation device and is used for providing tension for the first tension compensation device; the traction mechanism is respectively connected with the first tension compensation device and the moment balance mechanism and is used for traction the first tension compensation device to rotate. The fatigue test device has the advantages of simple structure, low production cost, easy industrial production and capability of efficiently carrying out fatigue test on the tension compensation device.
Description
Technical Field
The invention relates to the technical field of tests, in particular to a fatigue test device for tension compensation of a contact net.
Background
The overhead contact net is an important supporting facility of the electrified railway, and mainly provides power energy for electric locomotives, motor trains and high-speed rails, and the dynamic performance of the overhead contact net has a great influence on the stability of the current flowing of the train along with popularization of the electrified railway in China and improvement of the operation speed. When the environment temperature changes, the overhead contact net wire expands with heat and contracts with cold, and the tension compensation device is used as an important device for maintaining the constant tension of the overhead contact net wire, so that whether the overhead contact net wire works normally or not has an extremely important effect on maintaining the space form of the overhead contact net, the dynamic performance of the overhead contact net and the safety of the current-carrying and railway operation of a locomotive.
Currently, the common tension compensation device is provided with a pulley compensation device and a ratchet wheel compensation device, and in order to ensure the reliability of the transmission efficiency of the tension compensation device, a fatigue test device for tension compensation of a contact net is generally required to be adopted for quality detection of the products. Therefore, how to design a fatigue test device for tension compensation of a contact net for a high-efficiency tension compensation device becomes a technical problem to be solved in the field.
Disclosure of Invention
In order to overcome the defects, the technical problem to be solved by the invention is to provide a fatigue test device for tension compensation of a contact net, which is used for improving the efficiency of performing fatigue test on the tension compensation device.
In order to solve the technical problems, the fatigue test device for tension compensation of the overhead line system is used for testing the tension compensation device and comprises a first counterweight mechanism, a moment balancing mechanism and a traction mechanism arranged on a support frame;
under the condition of testing the tension compensation device, the supporting frame is used for fixing the first tension compensation device and the moment balance mechanism on two sides of the traction mechanism; the first weight mechanism is connected with the first tension compensation device and is used for providing tension for the first tension compensation device; the traction mechanism is respectively connected with the first tension compensation device and the moment balance mechanism and is used for traction the first tension compensation device to rotate.
Optionally, the moment balance mechanism is constituted by a second weight mechanism.
Optionally, the moment balance mechanism is composed of a second tension compensation device and a second counterweight mechanism; the second tension compensation device is respectively connected with the traction mechanism and the second counterweight mechanism; the second counterweight mechanism is used for providing tension for the second tension compensation device; the traction mechanism is also used for traction the second tension compensation device to rotate.
Optionally, the first tension compensation device and the second tension compensation device rotate in the same direction under the traction of the traction mechanism.
Optionally, the fatigue test device for tension compensation of the overhead line system further comprises two wire reels and two connecting mechanisms, wherein one end of each connecting mechanism is fixed on one wire reel, and the other end of each connecting mechanism is connected with the first tension compensation device or the second tension compensation device; the two wire reels are arranged on the traction mechanism.
Optionally, the traction mechanism comprises a traction machine; the two wire reels are arranged on pulleys of the traction machine.
Optionally, the traction mechanism further comprises a variable frequency servo motor and a gear set mechanism, and the gear set mechanism is respectively connected with the pulley and a motor shaft of the variable frequency servo motor.
Optionally, when weights of the two weight mechanisms are different, the variable frequency servo motor is used for adjusting the power of the motor in a variable frequency manner.
Optionally, the gear set mechanism includes a traction gear, a transmission gear, and a belt; the motor shaft is connected with the traction gear; the transmission gear is connected with the pulley through the belt; the traction gear is connected with the transmission gear in a gear transmission mode.
Optionally, a key connection is adopted between the motor shaft and the traction gear.
The invention has the following beneficial effects:
the fatigue testing device for the tension compensation of the overhead line system, which is disclosed by the embodiment of the invention, belongs to a balance fatigue testing machine, is simple in structure, low in production cost, easy to realize industrial production and capable of efficiently carrying out fatigue test on the tension compensation device.
Drawings
Fig. 1 is a schematic structural diagram of an alternative fatigue test device for tension compensation of a contact net in an embodiment of the present invention.
Detailed Description
In order to solve the problems in the prior art, the invention provides a fatigue test device for tension compensation of a contact net, and the invention is further described in detail below with reference to the accompanying drawings and the embodiment. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment of the invention provides a fatigue test device for tension compensation of a contact net, which is used for testing the tension compensation device, and as shown in figure 1, comprises a first counterweight mechanism, a moment balancing mechanism and a traction mechanism arranged on a support frame;
under the condition of testing the tension compensation device, the supporting frame is used for fixing the first tension compensation device and the moment balance mechanism on two sides of the traction mechanism; the first weight mechanism is connected with the first tension compensation device and is used for providing tension for the first tension compensation device; the traction mechanism is respectively connected with the first tension compensation device and the moment balance mechanism and is used for traction the first tension compensation device to rotate.
Wherein, first counter weight mechanism can include balancing weight 1, couple 2 and haulage rope 3.
The moment balance mechanism can only consist of a second weight mechanism, and the moment during the fatigue test is balanced through the second weight mechanism; the second weight mechanism may include a hanger, a hauling rope and a deployment block 10. Of course, in order to increase the efficiency of the fatigue test, the moment balancing mechanism may be composed of the second tension compensation device 9 and the second arrangement mechanism.
Wherein the traction mechanism may comprise a traction machine 8.
The supporting frame is not shown in the figure, and the structure of the supporting frame can be set according to practical situations, and is not particularly limited herein.
The fatigue testing device for the tension compensation of the overhead line system, which is disclosed by the embodiment of the invention, belongs to a balance fatigue testing machine, is simple in structure, low in production cost, easy to realize industrial production and capable of efficiently carrying out fatigue test on the tension compensation device.
On the basis of the above-described embodiments, modifications of the above-described embodiments are further proposed.
In the embodiment of the present invention, optionally, the moment balance mechanism is composed of a second tension compensation device 9 and a second weight mechanism; the second tension compensation device 9 is respectively connected with the traction mechanism and the second counterweight mechanism; the second counterweight mechanism is used for providing tension for the second tension compensation device; the traction mechanism is also used for traction the second tension compensation device to rotate.
In an embodiment of the present invention, optionally, the rotation directions of the first tension compensation device and the second tension compensation device are the same under the traction of the traction mechanism.
In the embodiment of the present invention, optionally, the fatigue test device for tension compensation of the catenary further includes two wire reels and two connection mechanisms, wherein one end of each connection mechanism is fixed on one wire reel, and the other end is connected with the first tension compensation device or the second tension compensation device; the two wire reels are arranged on the traction mechanism. The structure of the two connection means may be identical, for example, one of which comprises two wire ropes 5, 7 connected by a wire clamp 6.
In an embodiment of the invention, optionally, the traction mechanism comprises a traction machine 8; two wire reels are arranged on the pulleys of the traction machine 8.
In an embodiment of the present invention, optionally, the traction mechanism further includes a variable frequency servo motor 14 and a gear set mechanism, and the gear set mechanism is connected to the pulley and a motor shaft of the variable frequency servo motor, respectively. Wherein the gear set mechanism comprises a traction gear 13, a transmission gear 12 and a belt 11; the motor shaft is connected with a traction gear 13; the transmission gear 12 is connected with the pulley through the belt 11; the traction gear 13 and the transmission gear 12 are connected by means of a gear transmission. The motor shaft is connected with the traction gear 13 by a key.
In the embodiment of the invention, optionally, when weights of the two weight mechanisms are different, the variable-frequency servo motor is used for adjusting the power of the motor in a variable-frequency manner.
In an embodiment of the invention, optionally, for each weight mechanism, the weight mechanism comprises a deployment block haulage rope 3; the balancing weight is provided with a hook 2, one end of the traction rope is connected with the balancing weight through the hook 2, and the other end of the traction rope is connected with a tension compensation device.
The working principle of the embodiment of the present invention is briefly described below.
In the embodiment of the invention, optionally, the fatigue test device for tension compensation of the overhead line system comprises a variable-frequency servo motor 14, a traction gear 13 with a shaft, a transmission gear 12 with a shaft, a belt 11 and a traction machine 8, wherein two sides of the traction machine 8 are respectively provided with a set of tension compensation devices 4 and 9, and each tension compensation device is connected with a balancing weight 1 through a hook 2 and a traction rope 3; one end of a steel wire rope 5 is fixed on the tension compensation device 4, the other end of the steel wire rope is connected with a steel wire rope 7 through a wire clamp 6, and the other end of the steel wire rope 7 is fixed on a traction machine 8.
The motor shaft is connected with the traction gear 13 by a key. The transmission gear 12 and the traction gear 13 adopt gear transmission. The traction machine 8 is connected with the traction gear 12 by a belt. The traction machine 8 is connected with tension compensation devices on two sides through a steel wire rope 7. And when the counterweights at the two sides are different, the power of the motor is adjusted through frequency conversion.
The pulley of the traction machine 8 is provided with two wire reels and force compensation devices at two sides which are respectively connected by steel wire ropes.
For clarity of description, the left and right sides of the drawing are defined as the left and right sides of the fatigue test device for contact net tension compensation. When the variable frequency servo motor is started to run clockwise, the traction machine 8 rotates clockwise. The left tension measuring compensation device 4 rotates clockwise to pull the left balancing weight 1 to ascend, the right tension measuring compensation device 9 rotates clockwise to sink the right balancing weight. After a certain time of operation, the variable frequency servo motor rotates anticlockwise, the traction machine 8 also rotates anticlockwise, the left-side tension compensation device and the right-side tension compensation device to be tested rotate anticlockwise, the left-side balancing weight sinks, and the right-side balancing weight rises, so that 1 fatigue test of the two tension compensation devices is completed. Repeating the operation, controlling the rotation direction of the traction machine through the variable-frequency servo motor, recording the number of times of completing the fatigue test, stopping rotating after the motor runs to the number of times of the fatigue test, and finally completing the detection of the fatigue life of the tension compensation device.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The fatigue test device for tension compensation of the overhead line system is characterized by being used for testing the tension compensation device and comprising a first counterweight mechanism, a moment balancing mechanism and a traction mechanism arranged on a support frame;
under the condition of testing the tension compensation device, the supporting frame is used for fixing the first tension compensation device and the moment balance mechanism on two sides of the traction mechanism; the first weight mechanism is connected with the first tension compensation device and is used for providing tension for the first tension compensation device; the traction mechanism is respectively connected with the first tension compensation device and the moment balance mechanism and is used for traction the first tension compensation device to rotate;
the moment balance mechanism consists of a second tension compensation device and a second counterweight mechanism; the second tension compensation device is respectively connected with the traction mechanism and the second counterweight mechanism; the second counterweight mechanism is used for providing tension for the second tension compensation device; the traction mechanism is also used for traction the second tension compensation device to rotate;
the fatigue test device for tension compensation of the overhead line system further comprises two wire reels and two connecting mechanisms, wherein one end of each connecting mechanism is fixed on one wire reel, and the other end of each connecting mechanism is connected with the first tension compensation device or the second tension compensation device; the two wire reels are arranged on the traction mechanism.
2. The fatigue test device for tension compensation of overhead line system according to claim 1, wherein the moment balance mechanism is constituted by a second weight mechanism.
3. The fatigue test device for tension compensation of overhead line system according to claim 1, wherein the first tension compensation device and the second tension compensation device rotate in the same direction under the traction of the traction mechanism.
4. The fatigue test device for tension compensation of overhead line system according to claim 1, wherein the traction mechanism comprises a traction machine; the two wire reels are arranged on pulleys of the traction machine.
5. The fatigue test device for catenary tension compensation according to claim 4, wherein the traction mechanism further comprises a variable frequency servo motor and a gear set mechanism, and the gear set mechanism is respectively connected with the pulley and a motor shaft of the variable frequency servo motor.
6. The fatigue test device for tension compensation of overhead line system according to claim 5, wherein the variable frequency servo motor is used for variable frequency adjustment of motor power when weights of the two weight mechanisms are different.
7. The fatigue test device for tension compensation of overhead line system according to claim 5, wherein the gear train mechanism comprises a traction gear, a transmission gear and a belt; the motor shaft is connected with the traction gear; the transmission gear is connected with the pulley through the belt; the traction gear is connected with the transmission gear in a gear transmission mode.
8. The fatigue test device for tension compensation of overhead line system according to claim 7, wherein the motor shaft and the traction gear are connected by a key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030065.9A CN108254170B (en) | 2018-01-12 | 2018-01-12 | Fatigue test device for tension compensation of contact net |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030065.9A CN108254170B (en) | 2018-01-12 | 2018-01-12 | Fatigue test device for tension compensation of contact net |
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| CN108254170A CN108254170A (en) | 2018-07-06 |
| CN108254170B true CN108254170B (en) | 2024-04-02 |
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| CN201810030065.9A Active CN108254170B (en) | 2018-01-12 | 2018-01-12 | Fatigue test device for tension compensation of contact net |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113970430B (en) * | 2021-10-22 | 2022-09-06 | 中国铁道科学研究院集团有限公司标准计量研究所 | Fatigue test system for multichannel contact net compensation device |
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