CN103308236B - Wheel constraining device for detecting braking force of automobile rack - Google Patents
Wheel constraining device for detecting braking force of automobile rack Download PDFInfo
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- CN103308236B CN103308236B CN201310203618.3A CN201310203618A CN103308236B CN 103308236 B CN103308236 B CN 103308236B CN 201310203618 A CN201310203618 A CN 201310203618A CN 103308236 B CN103308236 B CN 103308236B
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- pivot pin
- connecting hole
- firm banking
- hydraulic system
- force cell
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Abstract
The invention discloses an assistant device for automobile detection equipment in the industrial field of automobiles, and in particular relates to a wheel constraining device for detecting braking force of an automobile rack. The invention aims to solve the problem that the braking force detection error is great because the detected automobile is in an unstable state in braking force detection of existing automobile rack. The device consists of a constraining cylinder mechanism, a lifting hydraulic system and a positioning hydraulic system. Horizontal forward constraint is applied to the wheel tested by the constraining cylinder to test that the wheel is in a stable state. The lifting and positioning hydraulic systems are connected through a connecting arm in a herringbone shape, so that the constraining cylinder can move freely in a two-dimensional plane.
Description
Technical field
The present invention relates to the auxiliary detection device of a kind of automotive inspection equipment of auto industry field, in particular, it relates to a kind of automobile stand braking forces measuring wheel restraint device.
Background technology
China's vehicle in use quantity rapid growth, along with the lifting of automobile quantity and speed, the driving safety of automobile is most important.Therefore, the braking ability of automobile is detected and becomes rules and regulations critical item.So far, the most of vehicle inspection and test stations of China are all to detect on automobile drum braking monitor station or plate brake stage to vehicle in use braking forces measuring, part vehicle adopts road examination, and owing to detecting the features such as automobile braking force is convenient, stable, safe, quick, reproducible on drum braking monitor station, be widely used.While carrying out braking forces measuring on stand monitor station, there is three kinds of states, i.e. steady state (SS), unsteady state and critical conditions in vehicle.During steady state (SS), test wheel attachment coefficient makes full use of, and test wheel all contacts with cylinder before and after stand, and all has adhesion.Unsteady state, for test wheel departs from front roll, only contacts with back roll, or test wheel shifts out the state of testing table.Critical conditions is the criticality between steady state (SS) and unsteady state.Only under steady state (SS), could realize the true maximum braking capacity test of tested vehicle.When carrying out automobile stand braking forces measuring, after tested wheel lock up, brake drum can make tested vehicle shift out testing table or depart from front roll in unstable state state the braking counter-force of wheel, and this phenomenon occurs, by the damping force of test is not conformed to automobile actual braking force, to be easy to cause erroneous judgement.At present, still without comparison effectively, way addresses the above problem easily, classic method is that the development test of the method application single car produces effect very much, but cannot on the detection line of continuous-flow type operation, apply by the fixing problems that solves of vehicle traction.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing Automobile Braking Force Detecting platform tested automobile problem in unsteady state when carrying out automobile stand braking forces measuring, provide a kind of tested automotive test wheel is applied to a constraint, make the automobile stand braking forces measuring wheel restraint device of tested automobile in steady state (SS).
Consult Fig. 1 to Figure 12, for solving the problems of the technologies described above, the present invention adopts following technical scheme to be achieved.
Automobile stand braking forces measuring wheel restraint device by retraining cylinder mechanism B, lifting hydraulic system C, location hydraulic system D forms, install lower than hydraulic system D bottom surface, location lifting hydraulic system C bottom surface, and lifting hydraulic system C is " people " font with location hydraulic system D and is connected.
Constraint cylinder mechanism B described in technical scheme forms by retraining cylinder 1, roller end cover 2, drum shaft 3, roller sleeve 4, bearing with spherical outside surface 5 and linking arm 6.
Constraint cylinder is round-meshed stepped appearance roller end cover 2 solder ups of middle processing for 1 two ends, drum shaft 3 covers have the end, one end of roller sleeve 4 to be connected with bearing 5 inner ring interference fit, bearing with spherical outside surface 5 is connected with the bearing saddle bore sphere of linking arm 6 upper ends, drum shaft 3 is connected with the middle circular hole interference fit of roller end cover 2, and roller sleeve 4 is sleeved on drum shaft 3 outsides, other end end.
Constraint cylinder 1 is a cylindrical component of being made by hollow steel pipe, and two ends, inner side are processed into stepped.
Drum shaft 3 ends, one end are processed into stepped.
Lifting hydraulic system C described in technical scheme is mainly comprised of stay-supported type displacement sensor 7, stay-supported type displacement sensor firm banking 8, hydraulic stem 9, hydraulic cylinder upper flange 10, hydraulic cylinder 11, hydraulic cylinder lower flange 12, lower shaft joint 13, firm banking 14 and pivot pin 15.
Stay-supported type displacement sensor 7 is fixed by bolts on stay-supported type displacement sensor firm banking 8, stay-supported type displacement sensor firm banking 8 is fixed by bolts to linking arm 6 outsides, stay-supported type displacement sensor 7 bracing wire ends are fixed by bolts to the outside of hydraulic cylinder upper flange 10, hydraulic stem 9 ends, upper end are fixedly connected with the connecting hole screw thread of linking arm 6 lower ends, hydraulic cylinder lower flange 12 is fixedly connected with lower shaft joint 13 screw threads, pivot pin 15 inserts in lower shaft joint 13 connecting holes and firm banking 14 connecting holes, pivot pin 15 outside surfaces coordinate with lower shaft joint 13 connecting hole inside surfaces and firm banking 14 connecting hole internal surface gaps, firm banking 14 use expansion bolts fix on the ground.
Mainly by pivot pin force cell 16, pivot pin force cell, fixedly catch 17, upper axle joint 19, hydraulic stem 9, hydraulic cylinder upper flange 10, hydraulic cylinder 11, hydraulic cylinder lower flange 12, lower shaft joint 13, firm banking 14 and pivot pin 15 form location hydraulic system D described in technical scheme.
The connecting hole of 19 lower ends, upper axle joint is fixedly connected with hydraulic stem 9 upper end end thread, pivot pin force cell 16 inserts in the connecting hole and upper axle joint 19 connecting holes at linking arm 6 middle parts, pivot pin force cell 16 outside surfaces coordinate with linking arm 6 middle part connecting hole inside surfaces and upper axle joint 19 connecting hole internal surface gaps, while inserting pivot pin force cell 16, outside is pointed to in the one end with pivot pin force cell outlet screw 18, pivot pin force cell fixedly catch 17 is inserted in the pickup groove of pivot pin force cell 16 other ends, hydraulic cylinder lower flange 12 is fixedly connected with lower shaft joint 13 screw threads, pivot pin 15 inserts in lower shaft joint 13 connecting holes and firm banking 14 connecting holes, pivot pin 15 outside surfaces coordinate with lower shaft joint 13 connecting hole inside surfaces and firm banking 14 connecting hole internal surface gaps, firm banking 14 use expansion bolts fix on the ground.
The invention has the beneficial effects as follows:
(1) automobile stand braking forces measuring wheel restraint device of the present invention, by test wheel is applied to level constraint forward, make tested automobile in steady state (SS), the problem of tested automobile in unsteady state when having solved existing Automobile Braking Force Detecting platform and carrying out automobile stand braking forces measuring.
(2) automobile stand braking forces measuring wheel restraint device of the present invention, adopt stay-supported type displacement sensor and pivot pin force cell to control hydraulic cylinder extension amount, can control according to different wheel size the stroke of hydraulically extensible system, realization coordinates with tested vehicle testing wheel, has versatility.
(3) automobile stand braking forces measuring wheel restraint device of the present invention, the lifting and the location that adopt hydraulically extensible system to realize constraint cylinder, simple in structure, and hydraulic system can provide the enough large constraining force to test wheel, the stability of assurance structure.
(4) automobile stand braking forces measuring wheel restraint device of the present invention, constraint cylinder design is that ball bearing connects, when test wheel is retrained, together rotate with test wheel, can be so that test wheel in steady state (SS), can not cause interference to damping force test again, and then realize the true maximum braking capacity test of tested automobile.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention will be further described:
Fig. 1 is the axonometric projection graph that duty that automobile stand braking forces measuring wheel restraint device coordinates with stand braking forces measuring platform A is seen from front.
Fig. 2 is the axonometric projection graph that off working state that automobile stand braking forces measuring wheel restraint device coordinates with stand braking forces measuring platform A is seen from front.
Fig. 3 is the left view of the duty that coordinates with stand braking forces measuring platform A of automobile stand braking forces measuring wheel restraint device.
Fig. 4 is that automobile stand braking forces measuring wheel restraint device removes with the duty that stand braking forces measuring platform A coordinates the axonometric projection graph of seeing from front after ground.
Fig. 5 is that automobile stand braking forces measuring wheel restraint device removes with the off working state that stand braking forces measuring platform A coordinates the axonometric projection graph of seeing from front after ground.
Fig. 6 is that automobile stand braking forces measuring wheel restraint device is seen the axonometric projection graph of Standard from front.
Fig. 7 retrains cylinder mechanism B in automobile stand braking forces measuring wheel restraint device from front, to see the axonometric projection graph of Standard.
Fig. 8 retrains cylinder mechanism B in automobile stand braking forces measuring wheel restraint device from front, to see the cut-open view of Standard.
Fig. 9 is that in automobile stand braking forces measuring wheel restraint device, linking arm 6 is seen the axonometric projection graph of Standard and the cut-open view that linking arm 6 is seen from the left side from front.
Figure 10 locates the Standard figure of hydraulic system C in automobile stand braking forces measuring wheel restraint device.
Figure 11 is the Standard figure of pivot pin force cell 16 in automobile stand braking forces measuring wheel restraint device.
Figure 12 is stay-supported type displacement sensor 7 and pivot pin force cell 16 installation site schematic diagram in automobile stand braking forces measuring wheel restraint device.
In figure: A. automobile stand braking forces measuring platform, B. retrain cylinder mechanism, C. lifting hydraulic system, D. locate hydraulic system, 1. constraint cylinder, 2. roller end cover, 3. drum shaft, 4. roller sleeve, 5. bearing with spherical outside surface, 6. linking arm, 7. stay-supported type displacement sensor, 8. stay-supported type displacement sensor firm banking, 9. hydraulic stem, 10. hydraulic cylinder upper flange, 11. hydraulic cylinders, 12. hydraulic cylinder lower flanges, 13. lower shaft joints, 14. firm bankings, 15. pivot pins, 16. pivot pin force cells, 17. pivot pin force cells are catch fixedly, 18. pivot pin force cell outlet screws, axle joint on 19..
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Consult Fig. 1 to Figure 12, automobile stand braking forces measuring wheel restraint device by retraining cylinder mechanism B, lifting hydraulic system C, location hydraulic system D forms.Lifting hydraulic system C completes constraint cylinder mechanism B motion in the vertical direction, complete constraint cylinder mechanism B of location hydraulic system D motion in the horizontal direction.Install lower than hydraulic system D bottom surface, location lifting hydraulic system C bottom surface, and lifting hydraulic system C is " people " font with location hydraulic system D and is connected.
Described constraint cylinder mechanism B forms by retraining cylinder 1, roller end cover 2, drum shaft 3, roller sleeve 4, bearing with spherical outside surface 5 and linking arm 6.Constraint cylinder 1 is a cylindrical component of being made by hollow steel pipe, two ends, inner side are processed into stepped, round-meshed stepped appearance roller end cover 2 solder ups of middle processing for two ends, drum shaft 3 ends, one end are processed into stepped, be connected with the middle circular hole interference fit of roller end cover 2, roller sleeve 4 is sleeved on drum shaft 3 outsides, other end end, drum shaft 3 covers have the end, one end of roller sleeve 4 to be connected with bearing 5 inner ring interference fit, and bearing with spherical outside surface 5 is connected with the bearing saddle bore sphere of linking arm 6 upper ends.
Described lifting hydraulic system C is mainly comprised of stay-supported type displacement sensor 7, stay-supported type displacement sensor firm banking 8, hydraulic stem 9, hydraulic cylinder upper flange 10, hydraulic cylinder 11, hydraulic cylinder lower flange 12, lower shaft joint 13, firm banking 14 and pivot pin 15.Stay-supported type displacement sensor 7 is fixed by bolts on stay-supported type displacement sensor firm banking 8, stay-supported type displacement sensor firm banking 8 is fixed by bolts to linking arm 6 outsides, stay-supported type displacement sensor 7 bracing wire ends are fixed by bolts to the outside of hydraulic cylinder upper flange 10, hydraulic stem 9 ends, upper end are fixedly connected with the connecting hole screw thread of linking arm 6 lower ends, hydraulic cylinder lower flange 12 is fixedly connected with lower shaft joint 13 screw threads, pivot pin 15 inserts in lower shaft joint 13 connecting holes and firm banking 14 connecting holes, pivot pin 15 outside surfaces coordinate with lower shaft joint 13 connecting hole inside surfaces and firm banking 14 connecting hole internal surface gaps, firm banking 14 use expansion bolts fix on the ground.
Mainly by pivot pin force cell 16, pivot pin force cell, fixedly catch 17, upper axle joint 19, hydraulic stem 9, hydraulic cylinder upper flange 10, hydraulic cylinder 11, hydraulic cylinder lower flange 12, lower shaft joint 13, firm banking 14 and pivot pin 15 form described location hydraulic system D.The connecting hole of 19 lower ends, upper axle joint is fixedly connected with hydraulic stem 9 upper end end thread, pivot pin force cell 16 inserts in the connecting hole and upper axle joint 19 connecting holes at linking arm 6 middle parts, pivot pin force cell 16 outside surfaces coordinate with linking arm 6 middle part connecting hole inside surfaces and upper axle joint 19 connecting hole internal surface gaps, while inserting pivot pin force cell 16, outside is pointed to in the one end with pivot pin force cell outlet screw 18, pivot pin force cell fixedly catch 17 is inserted in the pickup groove of pivot pin force cell 16 other ends, hydraulic cylinder lower flange 12 is fixedly connected with lower shaft joint 13 screw threads, pivot pin 15 inserts in lower shaft joint 13 connecting holes and firm banking 14 connecting holes, pivot pin 15 outside surfaces coordinate with lower shaft joint 13 connecting hole inside surfaces and firm banking 14 connecting hole internal surface gaps, firm banking 14 use expansion bolts fix on the ground.
Principle of work and the method for operating of automobile stand braking forces measuring wheel restraint device:
First, tested automobile sails into before stand braking forces measuring platform A, need to check that whether automobile stand braking forces measuring wheel restraint device is in off working state.After equipment inspection is normal, tested automobile sails automobile stand braking forces measuring platform A into, stand braking forces measuring platform A location switch sends the tested automobile signal that puts in place to single-chip microcomputer, single-chip microcomputer receives and puts in place after signal, control lifting hydraulic system C constraint cylinder 1 is given rise to certain altitude according to the size of test wheel, by stay-supported type displacement sensor 7, control lift height.After giving rise to specified altitude assignment, stay-supported type displacement sensor 7 is to single-chip microcomputer transmitted signal, and Single-chip Controlling lifting hydraulic system C stops lifting.Single-chip microcomputer is controlled location hydraulic system D again and is promoted constraint cylinder 1 near test wheel, when constraint cylinder 1 contacts with test wheel, the stressed meeting that is positioned at the pivot pin force cell 16 at linking arm 6 middle parts changes, pivot pin force cell 16 sends power variable signal to single-chip microcomputer immediately, and single-chip microcomputer is controlled location hydraulic system D stop motion after receiving signal.Location hydraulic system D is when promoting constraint cylinder 1 near test wheel, and lifting hydraulic system C need do corresponding cooperation and guarantee that constraint cylinder 1 Level Promoting is near test wheel.After constraint cylinder 1 puts in place, the relay of Single-chip Controlling stand braking forces measuring platform A, starts working stand braking forces measuring platform A, carries out automobile stand braking forces measuring.During test, constraint cylinder 1 together rotates with test wheel, and after test wheel lock up, 1 pair of test wheel of constraint cylinder applies level constraint forward, makes to test wheel in steady state (SS).After detection completes, Single-chip Controlling lifting makes to retrain cylinder 1 and gets back to initial position with location hydraulic system, i.e. off working state, and tested automobile rolls stand braking forces measuring platform A away from, completes automobile stand braking forces measuring.
Claims (4)
1. an automobile stand braking forces measuring wheel restraint device, it is characterized in that, described automobile stand braking forces measuring wheel restraint device by retraining cylinder mechanism (B), lifting hydraulic system (C), location hydraulic system (D) forms, install lower than hydraulic system (D) bottom surface, location lifting hydraulic system (C) bottom surface, and lifting hydraulic system (C) is " people " font with location hydraulic system (D) and is connected.
2. according to automobile stand braking forces measuring wheel restraint device claimed in claim 1, it is characterized in that, described constraint cylinder mechanism (B) is comprised of constraint cylinder (1), roller end cover (2), drum shaft (3), roller sleeve (4), bearing with spherical outside surface (5) and linking arm (6);
Middle processing round-meshed stepped appearance roller end cover (2) solder up for constraint cylinder (1) two ends, drum shaft (3) is connected with the middle circular hole interference fit of roller end cover (2), roller sleeve (4) is sleeved on outside, drum shaft (3) other end end, drum shaft (3) cover has the end, one end of roller sleeve (4) to be connected with bearing with spherical outside surface (5) inner ring interference fit, and bearing with spherical outside surface (5) is connected with the bearing saddle bore sphere of linking arm (6) upper end.
3. according to automobile stand braking forces measuring wheel restraint device claimed in claim 1, it is characterized in that, lifting hydraulic system (C) is mainly comprised of stay-supported type displacement sensor (7), stay-supported type displacement sensor firm banking (8), hydraulic stem (9), hydraulic cylinder upper flange (10), hydraulic cylinder (11), hydraulic cylinder lower flange (12), lower shaft joint (13), firm banking (14) and pivot pin (15);
Stay-supported type displacement sensor (7) is fixed by bolts on stay-supported type displacement sensor firm banking (8), stay-supported type displacement sensor firm banking (8) is fixed by bolts to linking arm (6) outside, stay-supported type displacement sensor (7) bracing wire end is fixed by bolts to the outside of hydraulic cylinder upper flange (10), hydraulic stem (9) end, upper end is fixedly connected with the connecting hole screw thread of linking arm (6) lower end, hydraulic cylinder lower flange (12) is fixedly connected with lower shaft joint (13) screw thread, pivot pin (15) inserts in lower shaft joint (13) connecting hole and firm banking (14) connecting hole, pivot pin (15) outside surface coordinates with lower shaft joint (13) connecting hole inside surface and firm banking (14) connecting hole internal surface gaps, firm banking (14) fixes on the ground with expansion bolt.
4. according to automobile stand braking forces measuring wheel restraint device claimed in claim 1, it is characterized in that, mainly by pivot pin force cell (16), pivot pin force cell, fixedly catch (17), upper axle joint (19), hydraulic stem (9), hydraulic cylinder upper flange (10), hydraulic cylinder (11), hydraulic cylinder lower flange (12), lower shaft joint (13), firm banking (14) and pivot pin (15) form location hydraulic system (D);
The connecting hole of lower end, upper axle joint (19) is fixedly connected with hydraulic stem (9) upper end end thread, pivot pin force cell (16) inserts in the connecting hole and upper axle joint (19) connecting hole at linking arm (6) middle part, pivot pin force cell (16) outside surface coordinates with linking arm (6) middle part connecting hole inside surface and upper axle joint (19) connecting hole internal surface gaps, while inserting pivot pin force cell (16), will point to outside with one end of pivot pin force cell outlet screw (18), pivot pin force cell fixedly catch (17) is inserted in the pickup groove of pivot pin force cell (16) other end, hydraulic cylinder lower flange (12) is fixedly connected with lower shaft joint (13) screw thread, pivot pin (15) inserts in lower shaft joint (13) connecting hole and firm banking (14) connecting hole, pivot pin (15) outside surface coordinates with lower shaft joint (13) connecting hole inside surface and firm banking (14) connecting hole internal surface gaps, firm banking (14) fixes on the ground with expansion bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310203618.3A CN103308236B (en) | 2013-05-28 | 2013-05-28 | Wheel constraining device for detecting braking force of automobile rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310203618.3A CN103308236B (en) | 2013-05-28 | 2013-05-28 | Wheel constraining device for detecting braking force of automobile rack |
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| Publication Number | Publication Date |
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| CN103308236A CN103308236A (en) | 2013-09-18 |
| CN103308236B true CN103308236B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310203618.3A Expired - Fee Related CN103308236B (en) | 2013-05-28 | 2013-05-28 | Wheel constraining device for detecting braking force of automobile rack |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677485A (en) * | 2017-09-15 | 2018-02-09 | 天津职业技术师范大学 | A kind of static single-wheel brake force special inspecting equipment |
| CN107782483A (en) * | 2017-11-01 | 2018-03-09 | 广州华工机动车检测技术有限公司 | A kind of servicing unit suitable for the desk-top detection of AWD car brake force |
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| CN103308236A (en) | 2013-09-18 |
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