CN101710013B - Vehicle axle load testing device used as braking station sensor - Google Patents
Vehicle axle load testing device used as braking station sensor Download PDFInfo
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- CN101710013B CN101710013B CN2009101537253A CN200910153725A CN101710013B CN 101710013 B CN101710013 B CN 101710013B CN 2009101537253 A CN2009101537253 A CN 2009101537253A CN 200910153725 A CN200910153725 A CN 200910153725A CN 101710013 B CN101710013 B CN 101710013B
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- electromagnetism
- tensimeter
- reduction valve
- axle load
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Abstract
The invention discloses a motor vehicle axle load testing device used as a braking station sensor, which mainly comprises a working platform stand, four working air cylinders, a force measurement sensor, a sensor fixing base and a drum type braking force testing platform, wherein the four working air cylinders are arranged in the working platform stand, the drum type braking force testing platform is fixedly installed at a center position in the working platform stand, the working air cylinders are respectively arranged at the positions of the four corners of the inner side of the working platform stand and are fixedly installed with the inner wall of the working platform stand, the force measurement sensor is fixedly installed on the sensor fixing base, and the working push rods of the working air cylinders are opposite to a force measurement contact of the force measurement sensor. The invention has the advantages that the invention has the function of measuring braking force and axle load and reduces the parking and positioning times and the test time; the measurement is accurate and reliable; and the entire height of the testing platform is lowered, and the maintenance is easy.
Description
Technical field
The present invention relates to the proving installation of a kind of motor vehicle damping force and axle load.
Background technology
The performance of vehicle braking device is directly connected to the security of motor vehicle operation.The general index of weighing braking ability is recently to represent with the damping force (braking force) and the percentage of axle load (reflection car weight).At present, most proving installations are to test damping force test and axle load as two independent devices, this mode makes the test of braking ability must be divided into two stations and arranges, both increased the space requirement that device is arranged, increased the stop frequency in the test process simultaneously, increase the time of test, reduce testing efficiency, increase labor intensity of operating personnel.In the braking test, detect in order to realize robotization in addition, the essential extra braking test station that increases is measured with regard to level sensor.Certainly will increase device, reduce the global reliability of detection system.
Summary of the invention
Technical matters to be solved by this invention provides a kind of motor vehicle axle load testing device of used as braking station sensor.
The technical scheme that the present invention is taked for its technical matters of solution is: the motor vehicle axle load testing device of this used as braking station sensor mainly comprises worktable frame and places four interior working cylinders of worktable frame, force cell, sensor firm banking and drum-type braking force test board, the drum-type braking force test board is fixedly mounted on the middle position in the worktable frame, working cylinder respectively in the position at four angles, inboard of worktable frame and with the inwall fixed installation of worktable frame, force cell is fixedly mounted on the sensor firm banking, and the work push rod of described working cylinder is relative with the dynamometry contact of force cell.
Further; the present invention also comprises pneumatic overload protection arrangement; described pneumatic overload protection arrangement comprises instrument air dryer; first reduction valve; second reduction valve; first tensimeter; second tensimeter; electromagnetism two position three-way valve and electromagnetism two-position four-way valve; described instrument air dryer is connected respectively with second reduction valve with first reduction valve; first reduction valve is connected with first tensimeter; second reduction valve is connected with second tensimeter; described first reduction valve; first tensimeter; second reduction valve is connected with the electromagnetism two position three-way valve respectively with second tensimeter; the electromagnetism two position three-way valve is connected with the electromagnetism two-position four-way valve, and described electromagnetism two-position four-way valve is connected respectively with four working cylinders.
Compared with prior art, advantage of the present invention is:
1) damping force measuring system and axle load measuring system are united two into one, reduce the location number of times that stops, reduce the test duration, improve testing efficiency;
2) reduce extra braking station sensor, reduced the source of trouble, improve the global reliability of system;
3) adopt high and low air pressure control, avoid overload that additional load causes destruction, have overload protection function, the life-span of system and reliability are improved the axle load sensor;
4) braking mechanism for testing and axle load testing device do not superpose on same height, have reduced the test board whole height, reduce mechanism complexity, maintenance easy to use;
5) the axle load detection faces comprises whole testing stand, has enlarged effective testing table top, makes the vehicle in the test process in place convenient, improves detection progress and precision.
Description of drawings
Fig. 1 is the scheme of installation of working cylinder of the present invention;
Fig. 2 is the vertical view of apparatus of the present invention;
Fig. 3 is the A-A cross-sectional schematic of Fig. 2;
Fig. 4 is the B-B cross-sectional schematic of Fig. 1;
Fig. 5 (A) is that the structure of force cell of the present invention is installed enlarged diagram;
Fig. 5 (B) is the schematic top plan view of Fig. 5 (A);
Fig. 6 is a working cylinder diagrammatic cross-section of the present invention;
Fig. 7 is the fundamental diagram of the present invention when being connected with pneumatic overload protection arrangement.
Wherein, 1. dynamometry contact 10. sensor firm banking 11. force cell set bolts, the 12. sensor firm banking set bolts of working panel 2. drum-type braking force testboards, 3. worktable frame 4. working cylinders, 5. force cell 6. cylinder holders, 7. cylinder stretching screws and nut 8. cylinder operation push rods 9. force cells and nut 13. start 15. upper chamber's scavenge ports lower chamber of air cylinder chambers 16., raising board upper chamber of air cylinder chambers 14., 17. lower chambers scavenge ports, 18. source of high pressure air, 19. air dryers, 20. first pressure-reducing valves, 21. second pressure-reducing valves, 22. first Pressure gauges, 23. second Pressure gauges, 24. electromagnetism two position three-way valves, 25. electromagnetism two-position four-way valves
Embodiment
As shown in Figures 1 to 4, the motor vehicle axle load testing device of used as braking station sensor of the present invention comprise cuboid worktable frame 3, place four working cylinders 4 in the worktable frame 3, corresponding with working cylinder 4 four force cells 5 and four sensor firm bankings 10 and drum-type braking force test board 2.As Fig. 2 and shown in Figure 4, working cylinder 4 places the position at four angles, inboard of worktable frame 3 respectively; Working cylinder 4 is fixedly installed togather with cylinder holder 6, and cylinder holder 6 is fixed on the inwall of worktable frame 3 (referring to Fig. 3).
As shown in Figure 6, working cylinder 4 is divided into upper chamber of air cylinder chamber 14 and cylinder lower chambers 16 by working piston.In upper chamber of air cylinder chamber 14 upper chamber's scavenge port 15 is arranged, 16 have a lower chambers scavenge port 17 in the lower chamber of air cylinder chamber.
Shown in Fig. 5 A and Fig. 5 B, force cell 5 of the present invention is fixedly mounted on the sensor firm banking 10 by force cell set bolt 11, sensor firm banking 10 is fixedly mounted on the basis by base set bolt and nut 12 again, and the dynamometry contact 9 of force cell 5 is relative with the work push rod 8 of working cylinder 4.
As a relatively independent system of the present invention, drum-type braking force test board 2 is fixed in the middle position in the worktable frame 3.
Further, as shown in Figure 7, apparatus of the present invention also comprise pneumatic overload protection arrangement.In pneumatic overload protection arrangement; instrument air dryer 19 is connected respectively with second reduction valve 21 with first reduction valve 20; first reduction valve 20 is connected with first tensimeter 22; second reduction valve 21 is connected with second tensimeter 23; first reduction valve 20, first tensimeter 22, second reduction valve 21 are connected with electromagnetism two position three-way valve 24 respectively with second tensimeter 23; electromagnetism two position three-way valve 24 is connected with electromagnetism two-position four-way valve 25, and electromagnetism two-position four-way valve 25 is connected respectively with four working cylinders 4.
The characteristics of apparatus of the present invention are to have concurrently the dual-use function of measuring damping force and axle load.
The course of work of apparatus of the present invention is as follows:
Before vehicle sailed on the working panel 1, electromagnetism two position three-way valve 24 was connected in low pressure line with pipeline.When first reduction valve 20 is reduced to less pressure with the pressure of source of high pressure air 18, electromagnetism two-position four-way valve 25 control gas circuits make the air of less pressure enter the upper chamber of air cylinder chamber 14 of working cylinder 4 through upper chamber's scavenge port 15, promoting cylinder operation push rod 8 moves downward, cylinder operation push rod 8 contacts with the dynamometry contact 9 of force cell, working cylinder push work platform frame 3 built on stilts make worktable frame 3 unsettled.This moment, vehicle sailed on the working panel 1 by direction shown in Figure 2.During beginning, owing to the big power that four force cells 5 are experienced of misalignment of wheel position and drum-type braking force test board 2 is inhomogeneous.Because air pressure is lower, the bearing capacity of working cylinder 4 is less, and force cell 5 can play good overload protective function.Simultaneously corresponding force cell 5 is stressed, and sends data to PC.Because wheel unbalance loading, the force cell 5 at four angles, inboard that is positioned at worktable frame 3 this moment is stressed inconsistent, vehicle need continue to overtake, when the measured numerical value basically identical of four side force sensors 5, show that vehicle's center of gravity is consistent with working panel 1 center of gravity, determine that promptly vehicle puts in place, this moment, electromagnetism two position three-way valve 24 switched to gas circuit the gas circuit of elevated pressures, second reduction valve 21 is adjusted to elevated pressures with air pressure, the air of elevated pressures enters upper chamber of air cylinder chamber 14 through upper chamber's scavenge port 15, this moment, air pressure was higher, the bearing capacity of working cylinder 4 is bigger, promoting cylinder operation push rod 8 moves downward, all force cells 5 are simultaneously stressed simultaneously, cylinder operation push rod 8 is subjected to the reacting force vertically upward of force cell 5, driving working cylinder 4 moves upward, and because working cylinder 4 is connected as a single entity with cylinder holder 6, and cylinder holder 6 is fixed on the worktable frame 3, therefore whole worktable frame 3 together with working panel 1 and on the motor vehicle wheel shaft parked move vertically upward.Because working cylinder 4 impulse strokes are very little,, realize the measurement of axle load so after worktable frame 3 breaks away from ground supporting, be fixed on the gravitational cue that force cell 5 is experienced and automatic checkout system is transmitted on the basis.After axle load measure to finish, make the air of elevated pressures enter lower chamber of air cylinder chamber 16 through lower chambers scavenge port 17 by electromagnetism two-position four-way valve 25 control gas circuits, and promote cylinder operation push rod 8 and move upward, worktable frame 3 lands.Drum-type braking force test board 2 carries out the test of damping force then, and data pass to PC.So just all finished the measurement of axle load and braking, vehicle rolls working panel 1 away from.Again pipeline is connected in the gas circuit of lower pressure afterwards by electromagnetism two position three-way valve 24, then electromagnetism two-position four-way valve 25 control gas circuits make low-pressure air enter upper chamber of air cylinder chamber 14, promoting cylinder operation push rod 8 moves downward, worktable frame 3 is unsettled again, waits for that next vehicle sails measurement into.
Claims (1)
1. the motor vehicle axle load testing device of a used as braking station sensor, it is characterized in that: it comprises worktable frame (3) and places interior four working cylinders (4) of worktable frame (3), force cell (5), sensor firm banking (10) and drum-type braking force test board (2), drum-type braking force test board (2) is fixedly mounted on the middle position in the worktable frame (3), working cylinder (4) respectively in the position at four angles, inboard of worktable frame (3) and with the inwall fixed installation of worktable frame (3), force cell (5) is fixedly mounted on the sensor firm banking (10), and the work push rod (8) of described working cylinder (4) is relative with the dynamometry contact (9) of force cell; Described motor vehicle axle load testing device also comprises pneumatic overload protection arrangement; described pneumatic overload protection arrangement comprises instrument air dryer (19); first reduction valve (20); second reduction valve (21); first tensimeter (22); second tensimeter (23); electromagnetism two position three-way valve (24) and electromagnetism two-position four-way valve (25); described instrument air dryer (19) is connected respectively with second reduction valve (21) with first reduction valve (20); first reduction valve (20) is connected with first tensimeter (22); second reduction valve (21) is connected with second tensimeter (23); described first reduction valve (20); first tensimeter (22); second reduction valve (21) is connected with electromagnetism two position three-way valve (24) respectively with second tensimeter (23); electromagnetism two position three-way valve (24) is connected with electromagnetism two-position four-way valve (25), and described electromagnetism two-position four-way valve (25) is connected respectively with four working cylinders (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101537253A CN101710013B (en) | 2009-11-02 | 2009-11-02 | Vehicle axle load testing device used as braking station sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101537253A CN101710013B (en) | 2009-11-02 | 2009-11-02 | Vehicle axle load testing device used as braking station sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101710013A CN101710013A (en) | 2010-05-19 |
| CN101710013B true CN101710013B (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101537253A Expired - Fee Related CN101710013B (en) | 2009-11-02 | 2009-11-02 | Vehicle axle load testing device used as braking station sensor |
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| Country | Link |
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| CN (1) | CN101710013B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229659Y (en) * | 1994-11-18 | 1996-06-19 | 王恩惠 | Plate type brake force dynamic detecting instrument |
| CN2279601Y (en) * | 1996-10-10 | 1998-04-22 | 王恩惠 | Plate type compound dynamic tester for braking force & axle load of vehicle |
| EP1508461B1 (en) * | 2003-08-16 | 2006-06-28 | Deere & Company | Hydopneumatic suspension |
| CN101226076A (en) * | 2008-01-28 | 2008-07-23 | 浙江大学 | Apparatus for measuring motor vehicle test bobbin charge |
| CN201522349U (en) * | 2009-11-02 | 2010-07-07 | 浙江大学 | Vehicle axle load testing device used as brake station sensor |
-
2009
- 2009-11-02 CN CN2009101537253A patent/CN101710013B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229659Y (en) * | 1994-11-18 | 1996-06-19 | 王恩惠 | Plate type brake force dynamic detecting instrument |
| CN2279601Y (en) * | 1996-10-10 | 1998-04-22 | 王恩惠 | Plate type compound dynamic tester for braking force & axle load of vehicle |
| EP1508461B1 (en) * | 2003-08-16 | 2006-06-28 | Deere & Company | Hydopneumatic suspension |
| CN101226076A (en) * | 2008-01-28 | 2008-07-23 | 浙江大学 | Apparatus for measuring motor vehicle test bobbin charge |
| CN201522349U (en) * | 2009-11-02 | 2010-07-07 | 浙江大学 | Vehicle axle load testing device used as brake station sensor |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平9-171408A 1997.06.30 |
| 邵千钧等.农用车制动称重复合检测试验台的研制.《农机化研究》.2003,(第2期),149-150，169. * |
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| Publication number | Publication date |
|---|---|
| CN101710013A (en) | 2010-05-19 |
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Granted publication date: 20110518 Termination date: 20121102 |