CN208282973U - The vertical load power system of high-precision pivoted arm force-measuring framework tests structure - Google Patents
The vertical load power system of high-precision pivoted arm force-measuring framework tests structure Download PDFInfo
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- CN208282973U CN208282973U CN201820939121.6U CN201820939121U CN208282973U CN 208282973 U CN208282973 U CN 208282973U CN 201820939121 U CN201820939121 U CN 201820939121U CN 208282973 U CN208282973 U CN 208282973U
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- curb girder
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- bridge circuit
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Abstract
The utility model improves a kind of vertical load power system test structure of high-precision pivoted arm force-measuring framework, the pivoted arm force-measuring framework has two curb girders and two crossbeams, the both ends of two curb girders constitute the quadrangle of the force-measuring framework, all there are four high separation load identification point regions for definition on the quadrangle, foil gauge is pasted on each high separation load identification point region, to constitute multiple groups full-bridge circuit structure.So, a full-bridge circuit structure is formed i.e. on each angle of force-measuring framework, four full-bridge circuit structures are then formed on four angles altogether, each full-bridge circuit independently decouples, it is four times of traditional test structure amplification coefficient, the measurement accuracy of the vertical load power system test structure of pivoted arm force-measuring framework can be greatlyd improve.
Description
Technical field
The utility model relates to the structures that the vertical load power system of the pivoted arm force-measuring framework to rail vehicle is tested.
Background technique
Rail vehicle truck vertical load power system include drift along load, sidewinder load and torsional load.
In the prior art, when carrying out the analysis of vertical load power system for railway vehicle bogie frame structure, Yi Zhongfang
Formula is that truck journal box spring and positioning arm are fabricated to independent force-measuring sensing respectively using load direct method of testing
Device, the load-time history of synchronism detection journal box spring and positioning arm under the conditions of practice, and be combined and calculate
To the Main Load of frame construction.Although this method measurement accuracy is high, closed between the load measured and structural strain in dynamic
System.
Another way is foil gauge to be pasted in truck transom and curb girder junction, according to survey using crossbeam method of testing
Examination needs composition to drift along, sidewinder or torsional load full-bridge circuit.Although this method solve measure between load and structural strain
Dynamic relationship problem, but wiring distance is easily damaged, system testing precision is low.
Utility model content
The purpose of this utility model is: providing a kind of vertical load power system test knot of high-precision pivoted arm force-measuring framework
On the one hand structure shortens wiring distance, on the other hand increases complete by forming a full-bridge circuit at each angle of force-measuring framework
The quantity of bridge circuit, to improve measuring accuracy.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of vertical load power system test structure of high-precision pivoted arm force-measuring framework, the pivoted arm force-measuring framework have two
Root curb girder and two crossbeams, the both ends of two curb girders constitute the quadrangle of the force-measuring framework, it is characterised in that:
All there are four high separation load identification point regions for definition on the quadrangle, are respectively as follows:
First area: curb girder upper cover plate outer, and it is located at nearside crossbeam center line to primary spring cap cylinder and curb girder transition
Between junction；
Second area: curb girder lower cover plate outer, and it is located at nearside crossbeam center line to primary spring cap cylinder and curb girder transition
Between junction；
Third region: edge in curb girder upper cover plate, and it is located at nearside crossbeam center line to primary spring cap cylinder and curb girder transition
Between junction；
The fourth region: edge in curb girder lower cover plate, and it is located at nearside crossbeam center line to primary spring cap cylinder and curb girder transition
Between junction；
Wherein so-called nearside crossbeam refers to that crossbeam more close with angle where each region；
The first foil gauge is pasted on the first region, is pasted the second foil gauge on the second region, is glued on the third area
Third foil gauge is pasted, the 4th foil gauge is pasted in the fourth region；The first foil gauge, the second foil gauge on the same angle,
Three foil gauges and the 4th foil gauge form full-bridge circuit structure；
In the full-bridge circuit structure, the first foil gauge and the second foil gauge form adjacent arms, third foil gauge and the 4th strain
Piece forms adjacent arms, the first foil gauge and the pairs of arm of third foil gauge group, the second foil gauge and the 4th pairs of arm of foil gauge group.
The vertical load power system of the high-precision pivoted arm force-measuring framework tests structure, in which: in the every of force-measuring framework
A angle is disposed at least one set of spare full-bridge circuit structure.
Mechanical characteristic of the utility model for pivoted arm positioning formula bogie frame, the curb girder upper cover above axle box swivel arm
Plate, lower cover plate edge paste foil gauge and form full-bridge circuit, and arrange at the symmetric position of framework quadrangle identical four it is complete
Bridge circuit distinguishes the vertical load of four positions, is then combined to be calculated and drifts along, sidewinders and reverse three kinds of vertical loads
System.
The utility model according to framework kinetic characteristic, directly against framework drift along power system, sidewinder power system, twisting resistance system survey
Examination needs, and devises bogie force-measuring framework；According to pivoted arm position formula bogie mechanical characteristic, framework it is four vertical by
The independent full-bridge circuit of power Position Design, makes to drift along on the basis of careful calculating, sidewinders, reverses three kinds of combined test power
System has bigger level of response, while the disturbance response for generating other power systems responds about low two orders of magnitude than test,
To ensure the decoupling precision of each power system.The it is proposed of bogie force-measuring framework not only ensure that measuring accuracy, but make the load measured with
Preferable quasi-static relationship is presented between structural strain.
Detailed description of the invention
Fig. 1 is the schematic top plan view of CR400AF trailer force-measuring framework；
Figure 1A is the bridge arrangement figure of the vertical load test structure of CR400AF trailer force-measuring framework；
Fig. 2, Fig. 3 are the strain gauge adhesion regions of CR400AF trailer force-measuring framework vertical load test structure；
Fig. 4 is the schematic top plan view of CR400BF trailer force-measuring framework；
Fig. 4 A is the bridge arrangement figure of the vertical load test structure of CR400BF trailer force-measuring framework；
Fig. 5, Fig. 6 are the strain gauge adhesion regions of CR400BF trailer force-measuring framework vertical load test structure.
Description of symbols: the first foil gauge of 1-；The second foil gauge of 2-；3- third foil gauge；The 4th foil gauge of 4-；Q1-
One parallactic angle；Bis- parallactic angle of Q2-；Tri- parallactic angle of Q3-；Tetra- parallactic angle of Q4-；51- primary spring cap cylinder；71- crossbeam；Outside 81- curb girder upper cover plate
Edge；82- curb girder lower cover plate outer；Edge in 83- curb girder upper cover plate；Edge in 84- curb girder lower cover plate；S1- range；S2- range.
Specific embodiment
The manufacturing process for introducing bogie force-measuring framework roughly first is as follows:
(1) the frame construction finite element model that each model is established using finite element method is applied simulation to frame construction and carried
Lotus architecturally designs strain group bridge mode for vertical force system, determines the high separation load identification point region of force-measuring framework.
(2) foil gauge is pasted in high separation load identification point region, foil gauge is connected into full-bridge circuit.
(3) frame construction is subjected to static demarcating on multichannel load force-measuring framework special calibrating testing stand, obtained complete
Corresponding relationship between bridge circuit and calibration load, completes the production of force-measuring framework.
The detailed process of high separation load identification point and the mark in step (3) on framework are found in above-mentioned steps (1)
Determine process, and be not belonging to the utility model it is claimed within the scope of, the public will not be influenced and use the utility model
Load test is carried out, therefore, it will not go into details for the utility model.
In conjunction with diagram, the specific structure for introducing the utility model is as follows:
As shown in Figure 1, being a kind of vertical view of typical pivoted arm force-measuring framework (by taking CR400AF trailer force-measuring framework as an example)
Structure schematic diagram has two curb girders and two crossbeams 71, and the both ends of two curb girders constitute the quadrangle of the force-measuring framework, the quadrangle point
It is not named as a parallactic angle Q1, two parallactic angle Q2, three parallactic angle Q3 and four parallactic angle Q4, there are four high separation load to know on each angle
Other region, is respectively as follows:
First area: curb girder upper cover plate outer 81, and it is located at 71 center line of nearside crossbeam to primary spring cap cylinder 51 (as schemed
Shown in 1) and curb girder transition junction between (as shown in range S1)；
Second area: curb girder lower cover plate outer 82, and it is located at 71 center line of nearside crossbeam to primary spring cap cylinder 51 (as schemed
Shown in 1) and curb girder transition junction between (as shown in range S1)；
Third region: along 83 in curb girder upper cover plate, and it is located at 71 center line of nearside crossbeam to primary spring cap cylinder 51 (as schemed
Shown in 1) and curb girder transition junction between (as shown in range S2)；
The fourth region: along 84 in curb girder lower cover plate, and it is located at 71 center line of nearside crossbeam to primary spring cap cylinder 51 (as schemed
Shown in 1) and curb girder transition junction between (as shown in range S2)；
Wherein so-called nearside crossbeam refers to that crossbeam more close with angle where each region.
The first foil gauge 1 is pasted on the first region, pastes the second foil gauge 2 on the second region, on the third area
Third foil gauge 3 is pasted, the 4th foil gauge 4 is pasted in the fourth region；The first foil gauge 1, second strain on the same angle
Piece 2, third foil gauge 3 and the 4th foil gauge 4 form full-bridge circuit structure；As shown in Figure 1A, in each full-bridge circuit structure,
First foil gauge 1 and the second foil gauge 2 form adjacent arms, and third foil gauge 3 and the 4th foil gauge 4 form adjacent arms, the first foil gauge 1
With 3 groups of pairs of arms of third foil gauge, 4 groups of pairs of arms of the second foil gauge 2 and the 4th foil gauge.
In this way, forming a full-bridge circuit structure on each angle of force-measuring framework, four are then formed on four angles altogether
Full-bridge circuit structure can greatly improve the measurement accuracy of the vertical load power system test structure of pivoted arm force-measuring framework.
Alternatively, it is also possible to paste more foil gauges on each zone, to form more full-bridge circuit structures, with
At least one set of spare full-bridge circuit structure of each angle arrangement of force-measuring framework.
It is that the present invention is applied to CR400BF trailer force-measuring framework (another typical case referring again to Fig. 4, Fig. 4 A, Fig. 5, Fig. 6
Pivoted arm force-measuring framework) when, used structure is identical as previous embodiment, and it will not be described here.
Accordingly, it is believed that the vertical load power system of pivoted arm force-measuring framework provided by the utility model tests structure, it can
To be applied on any pivoted arm force-measuring framework.
Claims (2)
1. a kind of vertical load power system of high-precision pivoted arm force-measuring framework tests structure, which has two
Curb girder and two crossbeams, the both ends of two curb girders constitute the quadrangle of the force-measuring framework, it is characterised in that:
All there are four high separation load identification point regions for definition on the quadrangle, are respectively as follows:
First area: curb girder upper cover plate outer, and be located at nearside crossbeam center line and connect to primary spring cap cylinder with curb girder transition
Between；
Second area: curb girder lower cover plate outer, and be located at nearside crossbeam center line and connect to primary spring cap cylinder with curb girder transition
Between；
Third region: edge in curb girder upper cover plate, and be located at nearside crossbeam center line and connect to primary spring cap cylinder with curb girder transition
Between；
The fourth region: edge in curb girder lower cover plate, and be located at nearside crossbeam center line and connect to primary spring cap cylinder with curb girder transition
Between；
Wherein so-called nearside crossbeam refers to that crossbeam more close with angle where each region；
The first foil gauge is pasted on the first region, pastes the second foil gauge on the second region, pastes on the third area
Three foil gauges paste the 4th foil gauge in the fourth region；The first foil gauge, the second foil gauge on the same angle, third are answered
Become piece and the 4th foil gauge forms full-bridge circuit structure；
In the full-bridge circuit structure, the first foil gauge and the second foil gauge form adjacent arms, third foil gauge and the 4th foil gauge group
At adjacent arms, the first foil gauge and the pairs of arm of third foil gauge group, the second foil gauge and the 4th pairs of arm of foil gauge group.
2. the vertical load power system of high-precision pivoted arm force-measuring framework according to claim 1 tests structure, feature exists
In: at least one set of spare full-bridge circuit structure is disposed at each angle of force-measuring framework.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820939121.6U CN208282973U (en) | 2018-06-15 | 2018-06-15 | The vertical load power system of high-precision pivoted arm force-measuring framework tests structure |
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| CN201820939121.6U CN208282973U (en) | 2018-06-15 | 2018-06-15 | The vertical load power system of high-precision pivoted arm force-measuring framework tests structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608821A (en) * | 2018-06-15 | 2019-12-24 | 北京交通大学 | Vertical loading force system test structure of rotating arm type force measurement frame and manufacturing method thereof |
| CN111811843A (en) * | 2020-06-01 | 2020-10-23 | 中车青岛四方机车车辆股份有限公司 | Load testing method for rotating arm type axle box |
-
2018
- 2018-06-15 CN CN201820939121.6U patent/CN208282973U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608821A (en) * | 2018-06-15 | 2019-12-24 | 北京交通大学 | Vertical loading force system test structure of rotating arm type force measurement frame and manufacturing method thereof |
| CN111811843A (en) * | 2020-06-01 | 2020-10-23 | 中车青岛四方机车车辆股份有限公司 | Load testing method for rotating arm type axle box |
| CN111811843B (en) * | 2020-06-01 | 2022-07-08 | 中车青岛四方机车车辆股份有限公司 | Load testing method for rotating arm type axle box |
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