CN116412981A - Dynamic calibrating device for bow net contact force - Google Patents
Dynamic calibrating device for bow net contact force Download PDFInfo
- Publication number
- CN116412981A CN116412981A CN202310123370.3A CN202310123370A CN116412981A CN 116412981 A CN116412981 A CN 116412981A CN 202310123370 A CN202310123370 A CN 202310123370A CN 116412981 A CN116412981 A CN 116412981A
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- contact
- pantograph
- force
- sleeve
- connecting beam
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- 230000007246 mechanism Effects 0.000 claims abstract description 108
- 230000005284 excitation Effects 0.000 claims abstract description 25
- 238000013016 damping Methods 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008846 dynamic interplay Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
Abstract
The invention discloses a dynamic calibration device for bow net contact force, which relates to the technical field of railway electric contact connection equipment, and comprises the following components: the contact mechanism is used for contacting with the pantograph to be tested; the excitation mechanism is used for applying pressure between the contact mechanism and the pantograph to be tested; the elastic damping mechanism is arranged between the contact mechanism and the excitation mechanism and is used for transmitting the thrust of the excitation mechanism to the contact mechanism so as to keep the contact between the contact mechanism and the pantograph to be tested; and the measuring mechanism is arranged between the elastic damping mechanism and the contact mechanism so as to measure the pressure between the contact mechanism and the pantograph to be measured. The dynamic calibration device for the contact force of the pantograph and the net can ensure stable and accurate value of the calibration process, and the calibration process keeps reliable contact between the pantograph to be tested and the pantograph slide plate to be detected.
Description
Technical Field
The invention relates to the technical field of railway electric contact connection equipment, in particular to a dynamic calibration device for bow net contact force.
Background
The bow net contact force is a core basic parameter for evaluating the bow gateway system of the high-speed railway, the calibration is an important basis for realizing the high-precision measurement of the dynamic interaction relation of the bow net system, and the accurate measurement seriously affects the evaluation of the bow gateway system and the safe and reliable operation of the bow net system. At present, although a relatively perfect 6C system assessment and inspection laboratory is established in high-speed railway infrastructure inspection, and an equivalent dynamic contact force assessment and inspection method is formulated according to international standards, due to the lack of a proper bow net dynamic coupling device, the existing bow net contact force dynamic calibration device cannot realize full-band bow net contact force dynamic calibration, a large number of bow net contact force dynamic detection devices still can only utilize standard weights to carry out static force calibration, namely the so-called static calibration, so that the influence of structural parameters on model time-varying characteristics is difficult to evaluate, errors, even mistakes, of detection results are caused, and scientific research and contact net equipment state assessment and analysis are severely restricted.
Disclosure of Invention
The invention aims to provide a dynamic calibration device for the contact force of a pantograph net, which can ensure stable and accurate values of a calibration process and maintain reliable contact between a pantograph to be tested and a pantograph sliding plate to be calibrated in the calibration process.
The above object of the present invention can be achieved by the following technical solutions:
the invention provides a dynamic calibration device for bow net contact force, which comprises:
a pantograph to be measured;
the contact mechanism is used for contacting with the pantograph to be tested;
the excitation mechanism is used for applying pressure between the contact mechanism and the pantograph to be tested;
the elastic damping mechanism is arranged between the contact mechanism and the excitation mechanism and is used for transmitting the thrust of the excitation mechanism to the contact mechanism so as to keep the contact between the contact mechanism and the pantograph to be tested;
and the measuring mechanism is arranged between the elastic damping mechanism and the contact mechanism so as to measure the pressure between the contact mechanism and the pantograph to be measured.
In a preferred embodiment, the elastic damping mechanism comprises:
a first sleeve disposed over the excitation mechanism;
one end of the first movable piece is arranged on the measuring mechanism, and the other end of the first movable piece is movably arranged in the first sleeve;
the elastic piece is arranged in the first sleeve and connected to the first movable piece;
the elastic piece can generate elastic force, and the elastic force is transmitted to the contact mechanism through the first movable piece and the measuring mechanism so as to generate pressure between the contact mechanism and the pantograph to be measured.
In a preferred embodiment, the elastic damping mechanism comprises:
the second sleeve and the first sleeve are oppositely arranged at two sides of the excitation mechanism;
one end of the second movable piece is arranged on the measuring mechanism, and the other end of the second movable piece is movably arranged in the second sleeve;
the damper is arranged in the second sleeve and connected to the second movable piece;
the damper can generate resistance when the contact mechanism and the excitation mechanism move relatively, so that the contact mechanism is prevented from oscillating under the action of the elastic force of the elastic piece.
In a preferred embodiment, the excitation mechanism comprises:
the first sleeve and the second sleeve are oppositely arranged at two sides of the first connecting beam;
and the driver is arranged on the first connecting beam and is used for driving the first connecting beam so as to compress the elastic piece to generate elastic force.
In a preferred embodiment, the first connection beam has a preset motion under the drive of the driver, and the preset motion at least comprises a sinusoidal motion.
In a preferred embodiment, the contact mechanism includes a second connecting beam, and the first movable member and the second movable member are respectively disposed on two sides of the second connecting beam.
In a preferred embodiment, the contact mechanism comprises an analog contact wire, the analog contact wire is arranged on the second connecting beam, and the analog contact wire presses on the pantograph to be tested.
In a preferred embodiment, the measuring mechanism includes two force sensors, one of which is disposed between the first movable member and the second connection beam, and the other of which is disposed between the second movable member and the second connection beam, so as to detect the pressure between the second connection beam and the pantograph to be measured.
The invention has the characteristics and advantages that:
the dynamic calibration device for the contact force of the bow net is provided with the elastic damping mechanism, the elastic damping mechanism consists of the spring and the damper, the displacement of different vibration frequencies generated by driving of the excitation mechanism can be converted into dynamic force and transmitted to the calibrated and detected pantograph slide plate through the simulated contact line, meanwhile, the large-amplitude and high-frequency vibration of the pantograph slide plate is not caused, the reliable contact between the simulated contact line and the pantograph slide plate in the full-frequency band calibration process is realized, the stable and controllable calibration process is ensured, the dynamic calibration of the contact force of the bow net in the full frequency band is accurate, and basic metering equipment guarantee is provided for tracing the dynamic contact force value of the bow net.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, 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 showing the overall structure of the dynamic bow net contact force calibrating device.
Fig. 2 is a schematic diagram showing the mechanism connection of the dynamic calibration device for bow net contact force.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, may be in communication with each other in two elements, may be directly connected, or may be indirectly connected through an intermediary, and the specific meaning of the terms may be understood by those of ordinary skill in the art in view of the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 and 2, the present invention provides a dynamic calibration device for bow net contact force, comprising: a pantograph A to be measured; the contact mechanism 1 is used for contacting with the pantograph A to be tested; the excitation mechanism 2 is used for applying pressure between the contact mechanism 1 and the pantograph A to be tested; the elastic damping mechanism 3 is arranged between the contact mechanism 1 and the excitation mechanism 2, and the elastic damping mechanism 3 is used for transmitting the thrust of the excitation mechanism 2 to the contact mechanism 1 so as to keep contact between the contact mechanism 1 and the pantograph A to be tested; and a measuring mechanism 4 arranged between the elastic damping mechanism 3 and the contact mechanism 1 to measure the pressure between the contact mechanism 1 and the pantograph A to be measured.
In order to further explain the dynamic calibration device for bow net contact force in the embodiment of the invention, the specific structure, connection relation and the like of the dynamic calibration device are further described, wherein:
in a preferred embodiment, the elastic damping mechanism 3 comprises: a first sleeve 31 provided on the excitation mechanism 2; a first movable member 32 having one end provided on the measuring mechanism 4 and the other end movably provided in the first sleeve 31; an elastic member 33 disposed in the first sleeve 31 and connected to the first movable member 32; the elastic member 33 can generate elastic force, and the elastic force is transmitted to the contact mechanism 1 through the first movable member 32 and the measuring mechanism 4, so as to generate pressure between the contact mechanism 1 and the pantograph a to be measured.
In a preferred embodiment, the elastic damping mechanism 3 comprises: the second sleeve 34 and the first sleeve 31 are oppositely arranged at two sides of the excitation mechanism 2; a second movable member 35 having one end provided on the measuring mechanism 4 and the other end movably provided in the second sleeve 34; a damper 36 disposed in the second sleeve 34 and connected to the second movable member 35; wherein the damper 36 can generate resistance force when the contact mechanism 1 and the exciting mechanism 2 relatively move, so as to prevent the contact mechanism 1 from oscillating under the elastic force of the elastic member 33.
In a preferred embodiment, the excitation mechanism 2 comprises: the first connecting beam 21, the first sleeve 31 and the second sleeve 34 are oppositely arranged at two sides of the first connecting beam 21; the driver 22 is disposed on the first connection beam 21, and the driver 22 is used for driving the first connection beam 21 to compress the elastic member 33 to generate elastic force.
In a preferred embodiment, the first connecting beam 21 has a predetermined movement under the drive of the driver 22, the predetermined movement comprising at least a sinusoidal movement.
In a preferred embodiment, the contact mechanism 1 comprises a second connecting beam 11, and the first movable member 32 and the second movable member 35 are respectively disposed at both sides of the second connecting beam 11.
In a preferred embodiment, the contact mechanism 1 comprises an analog contact wire 12, the analog contact wire 12 being arranged on the second connecting beam 11, the analog contact wire 12 being pressed against the pantograph a to be tested.
In a preferred embodiment, the measuring mechanism 4 comprises two force sensors, one of which is arranged between the first movable member 32 and the second connection beam 11, and the other of which is arranged between the second movable member 35 and the second connection beam 11, for detecting the pressure between the second connection beam 11 and the pantograph a to be measured.
Based on the above structural description, the dynamic calibration device for bow net contact force of the embodiment of the invention has the following beneficial effects:
the dynamic calibration device for the contact force of the pantograph and the net is provided with the elastic damping mechanism 3, the elastic damping mechanism 3 consists of a spring and a damper 36, displacement of different vibration frequencies generated by driving of the excitation mechanism 2 can be converted into dynamic force, the dynamic force is transmitted to a calibrated detection pantograph slide plate through the simulation contact line 12, meanwhile, large-amplitude and high-frequency vibration of the pantograph slide plate is not caused, the constant and reliable contact between the simulation contact line 12 and the pantograph slide plate in a full-frequency band calibration process is realized, the stable and controllable calibration process is ensured, the dynamic calibration of the contact force of the full-frequency band pantograph and the net is accurate, and basic metering equipment guarantee is provided for tracing the dynamic contact force value of the pantograph and the net.
The foregoing is merely exemplary embodiments of the present invention and those skilled in the art may make various modifications and alterations to the embodiments of the present invention based on the disclosure herein without departing from the spirit and scope of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Claims (8)
1. An arch net contact force dynamic calibration device, characterized by comprising:
the contact mechanism is used for contacting with the pantograph to be tested;
the excitation mechanism is used for applying pressure between the contact mechanism and the pantograph to be tested;
the elastic damping mechanism is arranged between the contact mechanism and the excitation mechanism and is used for transmitting the thrust of the excitation mechanism to the contact mechanism so as to keep the contact between the contact mechanism and the pantograph to be tested;
and the measuring mechanism is arranged between the elastic damping mechanism and the contact mechanism so as to measure the pressure between the contact mechanism and the pantograph to be measured.
2. The dynamic bow net contact force calibration device according to claim 1, wherein the elastic damping mechanism comprises:
a first sleeve disposed over the excitation mechanism;
one end of the first movable piece is arranged on the measuring mechanism, and the other end of the first movable piece is movably arranged in the first sleeve;
the elastic piece is arranged in the first sleeve and connected to the first movable piece;
the elastic piece can generate elastic force, and the elastic force is transmitted to the contact mechanism through the first movable piece and the measuring mechanism so as to generate pressure between the contact mechanism and the pantograph to be measured.
3. The dynamic bow net contact force calibration device according to claim 2, wherein the elastic damping mechanism comprises:
the second sleeve and the first sleeve are oppositely arranged at two sides of the excitation mechanism;
one end of the second movable piece is arranged on the measuring mechanism, and the other end of the second movable piece is movably arranged in the second sleeve;
the damper is arranged in the second sleeve and connected to the second movable piece;
the damper can generate resistance when the contact mechanism and the excitation mechanism move relatively, so that the contact mechanism is prevented from oscillating under the action of the elastic force of the elastic piece.
4. A dynamic bow net contact force calibration device according to claim 3, wherein the excitation mechanism comprises:
the first sleeve and the second sleeve are oppositely arranged at two sides of the first connecting beam;
and the driver is arranged on the first connecting beam and is used for driving the first connecting beam so as to compress the elastic piece to generate elastic force.
5. The dynamic bow net contact force calibration device according to claim 4, wherein the first connecting beam has a predetermined motion under the drive of the driver, the predetermined motion comprising at least a sinusoidal motion.
6. The dynamic bow net contact force calibration device according to claim 4, wherein the contact mechanism comprises a second connecting beam, and the first movable member and the second movable member are disposed on both sides of the second connecting beam, respectively.
7. The dynamic calibration device for bow net contact force according to claim 6, wherein the contact mechanism comprises an analog contact wire disposed on the second connecting beam, the analog contact wire pressing against the pantograph under test.
8. The dynamic calibration device for bow net contact force according to claim 7, wherein said measuring mechanism comprises two force sensors, one of said force sensors being disposed between said first movable member and said second connecting beam, and the other of said force sensors being disposed between said second movable member and said second connecting beam for detecting a pressure between said second connecting beam and said pantograph under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310123370.3A CN116412981A (en) | 2023-02-16 | 2023-02-16 | Dynamic calibrating device for bow net contact force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310123370.3A CN116412981A (en) | 2023-02-16 | 2023-02-16 | Dynamic calibrating device for bow net contact force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116412981A true CN116412981A (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310123370.3A Pending CN116412981A (en) | 2023-02-16 | 2023-02-16 | Dynamic calibrating device for bow net contact force |
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| CN (1) | CN116412981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116858524A (en) * | 2023-09-01 | 2023-10-10 | 中铁建电气化局集团轨道交通器材有限公司 | Device and method for testing energy consumption performance of elastic damping positioning wire clamp |
-
2023
- 2023-02-16 CN CN202310123370.3A patent/CN116412981A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116858524A (en) * | 2023-09-01 | 2023-10-10 | 中铁建电气化局集团轨道交通器材有限公司 | Device and method for testing energy consumption performance of elastic damping positioning wire clamp |
| CN116858524B (en) * | 2023-09-01 | 2023-11-28 | 中铁建电气化局集团轨道交通器材有限公司 | Device and method for testing energy consumption performance of elastic damping positioning wire clamp |
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