CN204202586U - Geometry passes through property measurement mechanism - Google Patents
Geometry passes through property measurement mechanism Download PDFInfo
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- CN204202586U CN204202586U CN201420564308.4U CN201420564308U CN204202586U CN 204202586 U CN204202586 U CN 204202586U CN 201420564308 U CN201420564308 U CN 201420564308U CN 204202586 U CN204202586 U CN 204202586U
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Abstract
The utility model provides a kind of geometry by property measurement mechanism, and described measurement mechanism comprises: measure table top, for vehicle contact; At least one lifter, is connected with described measurement table top, for adjusting adjustable height and/or the angle of inclination of described measurement table top; And sensor group, be arranged on described measurement table top, in the process of described measurement table top and vehicle contact, measure the angle of inclination of described measurement table top.Geometry described in the utility model, by property measurement mechanism, by arranging sensor group on measurement table top, directly can obtain the minimum ground clearance of vehicle, approach angle and departure angle, can reduce error, improve the precision measured.
Description
Technical field
The utility model relates to a kind of proving installation of vehicle performance, and particularly a kind of geometry passes through property measurement mechanism.
Background technology
Trafficability, generally refers to the ability that vehicle travels on uneven road surface and mellow soil.Vehicle geometry can be divided into by property and the support property passed through by property.The geometry of vehicle is generally determined by the physical dimension of vehicle self and the size of the obstacle run into by property.Wherein, geometry is mainly comprised by the parameter of property: the minimum ground clearance of vehicle, tire size, approach angle and departure angle etc.
Described minimum ground clearance is the distance of minimum point to surface level of vehicle zone line; Described approach angle is the angle between surface level and the plane being cut in static load front tyre outer rim, is positioned at that front is any is fixed on upper all in this plane of rigid element on vehicle; Described departure angle is the angle between surface level and the plane being cut in the last wheel tyre outer rim of static load vehicle, and what be positioned at last wheel rear is anyly fixed on rigid element on vehicle all on that plane.
Vehicle be the very important parameter of car load by property, be the parameter must announced before car load dispatches from the factory.Geometry for car load has clear and definite national standard by property, but the survey instrument that uses of each enterprise or measuring method have difference greatly.
Current common measuring method mainly comprises:
1, computer simulation is measured.But the method loses contact with reality, vehicle state in practice cannot be embodied, can only estimate as the initial stage of design.
2, take vehicular sideview picture, be then printed as drawing and measure on drawing.But the method affects measurement by shooting angle, error is larger.
3, plank or other material flat boards is used to carry out actual measurement.Uses platen area large owing to measuring institute, be affected by gravity in lifting process and cause flat board locally sagging, measuring accuracy cannot ensure, dull and stereotyped rising height tested person personnel judge difference and cause data error in addition.
Utility model content
In view of this, the utility model is intended to propose a kind of geometry by property measurement mechanism, to improve the degree of accuracy of measurement.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of geometry is by property measurement mechanism, and described measurement mechanism comprises: measure table top, for vehicle contact; At least one lifter, is connected with described measurement table top, for adjusting adjustable height and/or the angle of inclination of described measurement table top; And sensor group, be arranged on described measurement table top, in the process of described measurement table top and vehicle contact, measure the angle of inclination of described measurement table top.
Further, described measurement mechanism also comprises: control circuit, for receiving the data message of described sensor group transmission, to adjust the adjustable height of described lifter.
Further, described sensor group comprises: at least one first obliquity sensor, tilts forward and back angle for what measure described measurement table top.
Further, the quantity of described first obliquity sensor is two, and two described first obliquity sensors are separately positioned on the relative two ends of described measurement table top.
Further, described sensor group also comprises: pressure transducer, for measuring the pressure that described measurement table top bears.
Further, described sensor group also comprises: the second obliquity sensor, for measuring the angle that tilts of described measurement table top, with judge described measurement table top everywhere whether tilt forward and back angle consistent.
Further, described measurement mechanism also comprises: tall auxiliary mesa, is movably connected on described measurement table top, and can overturn 180 ° on described measurement table top, for contacting with the minimum point of vehicle zone line or contacting with the tire of vehicle is tangent.
Further, described tall auxiliary mesa is provided with the 3rd obliquity sensor, tilts forward and back angle for what measure when described tall auxiliary mesa and vehicle contact described tall auxiliary mesa.
Further, described lifter is provided with displacement transducer, for measuring the height of described lifter.
Further, the quantity of described lifter is three, is in steady state (SS) for controlling described measurement table top.
Relative to prior art, geometry described in the utility model has following advantage by property measurement mechanism:
(1) the utility model geometry is by property measurement mechanism, by arranging sensor group on measurement table top, directly can obtain the minimum ground clearance of vehicle, approach angle and departure angle, can reduce error, improve the precision measured.
(2) the utility model geometry passes through property measurement mechanism, table top and tall auxiliary mesa two parts are measured by being divided into by one piece of sheet material measurement, and the 3rd obliquity sensor is being set by arranging on described measurement table top in the first obliquity sensor and tall auxiliary mesa, guarantee that both are in same plane, can reduce in lifting process because of the sagging error caused in flat board local.Meanwhile, measuring table top and tall auxiliary mesa can stored collapsed, and floor area is little, and is easy to safeguard.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is for the geometry described in the utility model embodiment is by the structural representation of property measurement mechanism;
Fig. 2 is for the geometry described in the utility model embodiment is by the configuration state schematic diagram of property measurement mechanism when minimum ground clearance is measured.
Description of reference numerals:
1-measures table top, 11-first obliquity sensor, 12-pressure transducer, 13-second obliquity sensor, 2-lifter, 3-control circuit, 4-tall auxiliary mesa, 41-the 3rd obliquity sensor, 5-pedestal, 6-wheel, and 7-articulated system, 8-holds oscillating bearing.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 1, the utility model geometry is comprised by property measurement mechanism: measure table top 1, for vehicle contact; At least one lifter 2, is connected with described measurement table top 1, for adjusting adjustable height and/or the angle of inclination of described measurement table top 1; And sensor group, be arranged on described measurement table top 1, in the process of described measurement table top 1 and vehicle contact, measure the angle of inclination of described measurement table top 1.
In measuring process, completely manually can regulate the height of described lifter 2, can also by arranging control circuit 3, for receiving the data message of described sensor group transmission, to adjust the adjustable height of described lifter 2, improve the automatic controlling extent of measurement mechanism.Wherein, described control circuit 4 can comprise comparator circuit.Such as the data message of the described sensor group transmission received and setting value are compared, judge whether to be greater than setting value, if so, then output low level signal reduces to control described lifter 2, otherwise output high level signal raises to control described lifter 2.Wherein, described sensor group comprises at least one first obliquity sensor 11, tilts forward and back angle for what measure described measurement table top 1.Described first obliquity sensor 11 is generally provided with two, and two described first obliquity sensors arrange 11 at the relative two ends of described measurement table top 1.
In measuring process, owing to needing the adjustable height and/or the angle of inclination that adjust described measurement table top 1, may cause the opposite end of described measurement table top to tilt forward and back angle inconsistent, thus the accuracy of measurement can be affected.Therefore, when the numerical value that two first sensors 11 are measured is inconsistent, show the surface of described measurement table top 1 to tilt forward and back angle inconsistent, need to adjust further; When the numerical value that two first sensors 11 are measured is consistent, show to measure table top in order, directly can carry out next step operation.By arranging two first sensors 11, the situation of current described measurement table top 1 can be shown intuitively, being convenient to adjustment.
For guarantee further described measurement table top 1 everywhere to tilt forward and back angle consistent, described sensor group also comprises the 3rd sensor 13, for measuring the angle that tilts of described measurement table top 1.Described control circuit 3 can according to the measurement data of described 3rd sensor 13 judge described measurement table top 1 everywhere whether tilt forward and back angle consistent, thus the height of the described lifter 2 of adjustment relative further, can reduce error, improve the precision measured.
Described sensor group also comprises pressure transducer 12, for measuring the pressure that described measurement table top 1 bears.When described second sensor 12 measure numerical value in a preset range time, now first sensor 11 measure described measurement table top 1 tilt forward and back approach angle or the departure angle that angle is vehicle.
The utility model geometry also comprises tall auxiliary mesa 4 by property measurement mechanism, is movably connected on described measurement table top 1, and can rotate 180 ° on described measurement table top 1, for contacting with the minimum point of vehicle zone line or the tangent contact of tire of vehicle.Described tall auxiliary mesa 4 is collapsible to be placed on described measurement table top 1, and for depositing or measuring minimum ground clearance, floor area is little, and is easy to measure; Also deployable and described measurement table top 1 is in same plane, for approach angle or the departure angle of measuring vehicle, can improve the flatness measuring table top, reduce the error because Equipment causes.
Tall auxiliary mesa 4 is flexibly connected with described measurement table top 1 by articulated system 7, two table tops can relatively rotate along hinged system 7, but due to the positive stop effect by articulated system 7, described measurement table top 1 and tall auxiliary mesa 4 can only change between 0 °-180 °.
Wherein, described measurement table top 1 and tall auxiliary mesa 4 can be respectively accurately machined light type aluminium material, and thickness is 10mm, have good flatness.
For guaranteeing that described tall auxiliary mesa 4 is in same plane with described measurement table top 1 upon deployment, in described tall auxiliary mesa 4, this has the 3rd obliquity sensor 41, tilts forward and back angle for what measure described tall auxiliary mesa 4 and described tall auxiliary mesa 3 during vehicle contact.
When the measurement numerical value of described 3rd obliquity sensor 41 is consistent with the numerical value that described first obliquity sensor 11 is measured, represent tall auxiliary mesa 4 and measure table top 1 in the same plane, otherwise, not in same plane.Can indicate intuitively and measure table top 1 and the state residing for tall auxiliary mesa 4, be convenient to regulate, to improve the precision of measurement.
Described lifter 2 is provided with displacement transducer (not shown), for measuring the height of described lifter 2.When the minimum ground clearance of measuring vehicle, the numerical value of described 5th sensor measurement is minimum ground clearance.
Wherein, the quantity of described lifter 2 is traditionally arranged to be three, is in steady state (SS) for controlling described measurement table top.Described lifter 2 is hinged with described measurement table top 1 by end oscillating bearing 8, when adjusting the adjustable height and/or pitch angle of measuring table top 1, can adjust the height of each described lifter 2 respectively, make described measurement table top 1 everywhere to tilt forward and back angle consistent.
Described lifter 2 is bolted on pedestal 5, and is provided with 4 wheels 6 below pedestal 5.Wherein, 4 wheels 6 are connected with pedestal 5 by wheel shaft, and the surfacing of described wheel 6 is without decorative pattern, ensure the stability of test macro.4 wheels do not have deflecting roller, to ensure the linear driving performance that test macro is good.Described pedestal 5 is also provided with balancing weight, is unlikely to ensure test desk face tilt in measuring process and tumbles.
The approach angle of vehicle or the measuring process of departure angle: (1) launches tall auxiliary mesa 4, and the height of lifter 2 manually or can be adjusted by control circuit 3, visual measurement table top to tilt forward and back angle close but be less than the approach angle/departure angle of vehicle.(2) proving installation is moved to the below of vehicle to be measured, the lower limb of tall auxiliary mesa 4 is contacted with the tire of vehicle is tangent.(3) according to the measurement data of each sensor, by the height of control circuit 3 or each lifter 2 of Non-follow control.When measurement table top 1 is consistent with the angle of tall auxiliary mesa 4, and when the measurement numerical value of described pressure transducer 13 is in a preset range, now, the measurement numerical value of the first obliquity sensor 11 (or the 3rd obliquity sensor 41) is approach angle or the departure angle of vehicle.
The measuring process (as shown in Figure 2) of minimum ground clearance: tall auxiliary mesa 4 can rotate up along hinged system 7 and fit with described measurement table top 1 by (1).If desired, can first the multiple sensors measured on table top 1 be taken off, tall auxiliary mesa 4 folding be placed on measure on table top 1 after, described multiple sensor is arranged in tall auxiliary mesa 4.(2) manually or control circuit 3 adjust the height of lifter 2, make measurement table top promote certain altitude but be less than the minimum ground clearance of vehicle.(3) table top is measured in leveling, multiple lifter 2 is synchronously raised, when the measurement numerical value of described pressure transducer 13 is in preset range, now, table surface height is the minimum ground clearance of required vehicle, and wherein, this minimum ground clearance can obtain from the displacement transducer of lifter 2.
The utility model, by arranging pressure transducer, the exposure level of control measurement table top and vehicle, is avoided measuring table top and is subject to severe crush, affect measurement result.By longer measurement flat board is divided into the two parts that can fold placement, be easy to safeguard, and by arranging the first obliquity sensor and arrange the 3rd obliquity sensor in tall auxiliary mesa on measurement table top, the flatness of two table tops can be improved, reduce the error because sheet material causes.Directly can obtain the correlation parameters such as the approach angle of vehicle, departure angle and minimum ground clearance, not need calculating or the operation of carrying out other, further reduce measuring error.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. geometry passes through a property measurement mechanism, and it is characterized in that, described measurement mechanism comprises:
Measure table top (1), for vehicle contact;
At least one lifter (2), is connected with described measurement table top (1), for adjusting adjustable height and/or the angle of inclination of described measurement table top (1); And
Sensor group, is arranged on described measurement table top (1), in the process of described measurement table top (1) with vehicle contact, measures the angle of inclination of described measurement table top (1).
2. geometry according to claim 1 passes through property measurement mechanism, and it is characterized in that, described measurement mechanism also comprises:
Control circuit (3), for receiving the data message of described sensor group transmission, to adjust the adjustable height of described lifter (2).
3. geometry according to claim 1 passes through property measurement mechanism, and it is characterized in that, described sensor group comprises:
At least one first obliquity sensor (11), tilts forward and back angle for what measure described measurement table top (1).
4. geometry according to claim 3 passes through property measurement mechanism, it is characterized in that, the quantity of described first obliquity sensor (11) is two, and two described first obliquity sensors (11) are separately positioned on the relative two ends of described measurement table top (1).
5. geometry according to claim 3 passes through property measurement mechanism, and it is characterized in that, described sensor group also comprises:
Pressure transducer (12), for measuring the pressure that described measurement table top (1) is born.
6. geometry according to claim 3 passes through property measurement mechanism, and it is characterized in that, described sensor group also comprises:
Second obliquity sensor (13), for measuring the angle that tilts of described measurement table top (1), with judge described measurement table top (1) everywhere whether tilt forward and back angle consistent.
7. geometry according to claim 1 passes through property measurement mechanism, and it is characterized in that, described measurement mechanism also comprises:
Tall auxiliary mesa (4), is movably connected on described measurement table top (1), and can go up upset 180 °, for contacting with the minimum point of vehicle zone line or contacting with the tire of vehicle is tangent described measurement table top (1).
8. geometry according to claim 7 passes through property measurement mechanism, it is characterized in that, described tall auxiliary mesa (4) is provided with the 3rd obliquity sensor (41), tilts forward and back angle for what measure when described tall auxiliary mesa (4) and vehicle contact described tall auxiliary mesa (4).
9. geometry according to claim 1 passes through property measurement mechanism, and it is characterized in that, described lifter (2) is provided with displacement transducer, for measuring the height of described lifter (2).
10. the geometry according to any one of claim 1-9 passes through property measurement mechanism, and it is characterized in that, the quantity of described lifter (2) is three, is in steady state (SS) for controlling described measurement table top (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564308.4U CN204202586U (en) | 2014-09-28 | 2014-09-28 | Geometry passes through property measurement mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564308.4U CN204202586U (en) | 2014-09-28 | 2014-09-28 | Geometry passes through property measurement mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN204202586U true CN204202586U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420564308.4U Expired - Fee Related CN204202586U (en) | 2014-09-28 | 2014-09-28 | Geometry passes through property measurement mechanism |
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| Country | Link |
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| CN (1) | CN204202586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692952A (en) * | 2018-03-26 | 2018-10-23 | 江铃控股有限公司 | The measurement method and device of automobile passability parameter |
-
2014
- 2014-09-28 CN CN201420564308.4U patent/CN204202586U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692952A (en) * | 2018-03-26 | 2018-10-23 | 江铃控股有限公司 | The measurement method and device of automobile passability parameter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20210928 |