CN208350250U - The lateral load force system of high-precision pivoted arm force-measuring framework tests structure - Google Patents
The lateral load force system of high-precision pivoted arm force-measuring framework tests structure Download PDFInfo
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- CN208350250U CN208350250U CN201820937356.1U CN201820937356U CN208350250U CN 208350250 U CN208350250 U CN 208350250U CN 201820937356 U CN201820937356 U CN 201820937356U CN 208350250 U CN208350250 U CN 208350250U
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Abstract
本实用新型提高一种高精度转臂式测力构架的横向载荷力系测试结构，该转臂式测力构架具有两根侧梁与两根横梁，两根侧梁的两端构成该测力构架的四角，在该四角上都定义有四个高分离度载荷识别点区域，在每个高分离度载荷识别点区域上粘贴应变片，以构成多组全桥电路结构。如此，即在测力构架的每个角上形成一个全桥电路结构，四个角上则共形成四个全桥电路结构，每个全桥电路独立解耦，是传统测试结构放大系数的四倍，可以极大地提高转臂式测力构架的横向载荷力系测试结构的测量精度。
The utility model improves the lateral load force system testing structure of a high-precision rotating arm type force measuring frame. The rotating arm type force measuring frame has two side beams and two transverse beams, and the two ends of the two side beams constitute the force measuring frame. Four high-resolution load identification point areas are defined on the four corners of the frame, and strain gauges are pasted on each high-resolution load identification point area to form multiple sets of full-bridge circuit structures. In this way, a full-bridge circuit structure is formed on each corner of the force measuring frame, and four full-bridge circuit structures are formed on the four corners. Each full-bridge circuit is independently decoupled, which is four times the amplification factor of the traditional test structure. It can greatly improve the measurement accuracy of the lateral load force system test structure of the rotary arm type force measuring frame.
Description
Technical field
The utility model relates to the structures that the lateral load force system of the pivoted arm force-measuring framework to rail vehicle is tested.
Background technique
In the prior art, when carrying out the analysis of lateral load force 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 kind uses positioning arm seat method of testing, i.e., pastes foil gauge in framework positioning arm seat root, composition is laterally
Load full-bridge circuit.Although foil gauge is viscous this method solve the dynamic relationship problem measured between load and structural strain
It pastes position to be limited to by bogie pattern, system testing precision is low.
Utility model content
The purpose of this utility model is: providing a kind of lateral load force 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 lateral load force 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 pairs of arm of foil gauge group, third foil gauge and the 4th are strained
The pairs of arm of piece group, the first foil gauge and third foil gauge form adjacent arms, and the second foil gauge and the 4th foil gauge form adjacent arms.
The lateral load force 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 transverse load of four positions, is then combined to be calculated and drifts along, sidewinders and reverse three kinds of transverse 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 has the cross force system of framework entirety bigger
Level of response, while the disturbance response for generating other power systems responds about low two orders of magnitude than test, to ensure each power system
Decoupling precision.The it is proposed of bogie force-measuring framework not only ensure that measuring accuracy, but also make between the load measured and structural strain
Preferable quasi-static relationship is presented.
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 transverse 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 transverse 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 transverse 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 transverse 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,
2 groups of pairs of arms of first foil gauge 1 and the second foil gauge, 4 groups of pairs of arms of third foil gauge 3 and the 4th foil gauge, the first foil gauge 1
Adjacent arms is formed with third foil gauge 3, the second foil gauge 2 and the 4th foil gauge 4 form adjacent arms.
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 lateral load force 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 lateral load force 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)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608820A (en) * | 2018-06-15 | 2019-12-24 | 北京交通大学 | Lateral load force system test structure and manufacturing method of pivoting arm force measuring frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608820A (en) * | 2018-06-15 | 2019-12-24 | 北京交通大学 | Lateral load force system test structure and manufacturing method of pivoting arm force measuring frame |
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