CN101907504B - Oil cylinder-propelled drum type braking force test device - Google Patents
Oil cylinder-propelled drum type braking force test device Download PDFInfo
- Publication number
- CN101907504B CN101907504B CN2010102148842A CN201010214884A CN101907504B CN 101907504 B CN101907504 B CN 101907504B CN 2010102148842 A CN2010102148842 A CN 2010102148842A CN 201010214884 A CN201010214884 A CN 201010214884A CN 101907504 B CN101907504 B CN 101907504B
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- gear
- tooth bar
- bearing
- drum
- test device
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Abstract
The invention discloses an oil cylinder-propelled drum type braking force test device. A piston of a hydraulic oil cylinder of the test device is fixedly connected with one end of a rack, and the other end of the rack is engaged with a gear; a gear shaft passes through the gear; two braking and testing units are symmetrically connected with two ends of the gear shaft respectively, a first bearing and a bearing seat are arranged between each braking and testing unit and the outer end face of the gear respectively, the gear shaft passes through the first bearing and the bearing seat, and an anti-offset device is arranged beside the rack; each braking and testing unit comprises a torque sensor, a first drum and a second drum; a second bearing and a bearing seat are arranged at two ends of the rotating shafts of the first drum and the second drum respectively; and one end of the rotating shaft of the first drum is connected with one end of the torque sensor, and the other end of the torque sensor is connected with the gear shaft. The test device has the advantages of high measurement precision, small error and capability of performing mobile test.
Description
Technical field
The present invention relates to a kind of motor vehicle braking force test device, relate in particular to the drum-type braking force test device that a kind of oil cylinder promotes.
Background technology
The quality of motor vehicle braking ability is directly connected to traffic safety, and functional and reliable brake system can guarantee traffic safety, avoids traffic accident; Otherwise, be easy to cause the serious accident of car crash.The quality of braking ability also influences the performance of motor vehicle dynamic property.Therefore, to the motor vehicle braking ability regularly detect, compulsory maintenance can ensure that motor vehicle often is in safety traffic under the good technical state.
Present widely used motor vehicle drum reaction type braking test board is to be placed on the wheel of tested vehicle on the brake drum; With the rotation of motor head roll, the method for the power opposite with the brake drum sense of rotation that records during according to car brakeing is measured a kind of equipment with pilot block system power.Though accuracy of detection is higher and scope of application broad, it is complicated to exist measuring error and complete machine structure, install highly higherly, and cost of manufacture is high, and can only detect motor vehicle in the place of fixing.
Summary of the invention
The objective of the invention is to deficiency, the drum-type braking force test device that provides a kind of oil cylinder to promote to prior art.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: the drum-type braking force test device that this oil cylinder promotes mainly comprises hydraulic jack, tooth bar, gear, gear shaft and two brakings and test cell; One end of the piston of hydraulic jack and tooth bar is fixedly connected, the other end of tooth bar and gearing mesh, and gear shaft runs through gear; Two the braking and test cell connect with the two ends of gear shaft respectively symmetrically; Be respectively equipped with clutch shaft bearing and bearing seat between the outer face of each braking and test cell and gear, gear shaft runs through clutch shaft bearing and bearing seat, is provided with anti-offset assembly on the tooth bar side; In each braking and test cell; Comprise torsion torque sensor, first cylinder and second tin roller; The two ends of the rotating shaft of first cylinder and the rotating shaft of second tin roller are installed with one second bearing and bearing seat respectively; One end of the rotating shaft of first cylinder connects with an end of torsion torque sensor, and the other end of torsion torque sensor connects with gear shaft.
Further, the anti-offset assembly of the present invention comprises three bearings, and wherein two bearings place the both sides of tooth bar symmetrically, and another bearing places the below of tooth bar, and tooth bar contacts with the outside surface of the cylindrical of three bearings respectively.
Further, the anti-offset assembly of the present invention is located at the position at the centre portion place of tooth bar.
Compared with prior art, the beneficial effect that has of the present invention is:
1) the present invention does not adopt LOAD CELLS like prior art but adopts torsion torque sensor; And the rotating shaft of torsion torque sensor and first cylinder connect and torsion torque sensor with adopt connecting of hinge wheel axle such as the positive six prismatic connecting modes that closely cooperate; So measuring accuracy of the present invention is high, and error is very little;
2) the present invention only need control the hydraulic jack positive action when work, and after measuring end, control hydraulic jack counteragent gets final product, so be very simple with easily in operation, be convenient to operating personnel and accept fast;
3) present widely used motor vehicle drum reaction type braking test device be that motor-driven, speed reduction unit slow down and drive what slow down is one-sided drum apparatus, so proving installation needs two motors and speed reduction unit.And the present invention drives tooth bar owing to the employing hydraulic jack, and rack drives gear and the rotation of first cylinder only need use a hydraulic jack to get final product; In addition,, thereby guaranteed the startup of both sides cylinder and tested vehicle wheel, the synchronism of braking, obtained higher measuring accuracy thus, reduce error owing to first cylinder of gear both sides is controlled by same hydraulic jack.And on manufacturing cost, obviously the present invention more saves, and promotes the use of more easily.
4) the present invention is owing to adopt hydraulic jack to drive tooth bar; The rack drives gear and first cylinder; And very undersized hydraulic jack can provide very high driving force; So whole proving installation can both can have been made at fixed-site and be placed in the device of in the melt pit motor vehicle damping force being tested according to the difference of test site minification as required in proportion, also can make portable motor vehicle braking force test device by required scaled size.
Description of drawings
Fig. 1 is the drum-type braking force test device synoptic diagram that a kind of oil cylinder promotes;
Fig. 2 is that the A-A of union end of rotating shaft and torsion torque sensor of first cylinder among Fig. 1 is to synoptic diagram;
Fig. 3 is that the B-B of Fig. 2 is to synoptic diagram.
Among the figure: 1-1, clutch shaft bearing and bearing seat 1-2, second bearing and bearing seat 2, rotating shaft 3-1, the first cylinder 3-2, second tin roller 4, union end 5, torsion torque sensor 6, gear 7, bearing 8, tooth bar 9, gear shaft 10, bolt, nut and pad 11, tooth bar ring flange 12, piston flange dish 13, piston 14, hydraulic jack
Embodiment
The drum-type braking force test device that oil cylinder of the present invention promotes partly is made up of hydraulic jack 14, tooth bar 8, gear 6, gear shaft 9 and two brakings and test cell etc.
As shown in Figure 1, braking and test cell are to be used for realizing the transmission of car brakeing power and the test of braking torque force.In each braking and test cell, comprise torsion torque sensor 5, the first cylinder 3-1 and second tin roller 3-2.The two ends of the rotating shaft 2 of the first cylinder 3-1 and the rotating shaft 2 of second tin roller 3-2 are installed with one second bearing and bearing seat 1-2 respectively, guarantee that the first cylinder 3-1 and second tin roller 3-2 can freely rotate.One end of the rotating shaft 2 of the first cylinder 3-1 connects with an end of torsion torque sensor 5, and the other end of torsion torque sensor 5 connects with gear shaft 9.The rotating shaft 2 of the first cylinder 3-1 and gear shaft 9 mate as if mutual with the union end 4 of torsion torque sensor 5; Then torsion torque sensor 5 can more fast, accurately be sensed the damping force signal; For example like Fig. 1 and shown in Figure 2, the union end of torsion torque sensor 5 connects positive hexagonal prism shape in being, then the union end of the rotating shaft 2 of the first cylinder 3-1 and gear shaft 9 also adopts external positive hexagonal prism shape; Both mate each other, thereby form the connection that closely cooperates.
Between the outer face of each braking and test cell and gear 6, be provided with clutch shaft bearing and bearing seat 1-1 symmetrically; And gear shaft 9 runs through clutch shaft bearing and bearing seat 1-1; Clutch shaft bearing and bearing seat 1-1 are through being bolted on the frame; Thereby assurance gear 6 can only be done circumference with gear shaft 9 and rotatablely move, and other motions do not take place.
Like Fig. 1 and shown in Figure 3, in order to guarantee 8 of tooth bars the to-and-fro movements of fore-and-aft direction taking place, and side-to-side movement can not take place and moves downward, by tooth bar 8, be provided with anti-offset assembly.As wherein a kind of embodiment of the present invention; Anti-offset assembly comprises three bearings 7; Wherein two bearings 7 place the both sides of tooth bar 8 symmetrically; Another bearing 7 places the below of tooth bar 8, and the outside surface of the outer ring of three bearings 7 contacts with tooth bar 8 respectively, and three bearings 7 are fixing by the bolt axle journal that is fixed on the frame that passes its inner ring inside surface.Generally, can be as shown in figures 1 and 3, along the length direction of tooth bar 8 a plurality of anti-offset assemblies are set and then have better anti-offset effect.Especially, for reaching best anti-offset effect, the position that is preferably in the centre portion place of tooth bar 8 is provided with anti-offset assembly, for example in the position that belongs at the centre portion of tooth bar 8 as shown in figures 1 and 3 three bearing 7-1 is set.
The course of work of apparatus of the present invention is following:
Before apparatus of the present invention work begins, at first the required measurement wheel of motor vehicle is reached between the first cylinder 3-1 and the second tin roller 3-2, after motor vehicle stops well, primer fluid compressing cylinder 14.When hydraulic jack 14 was started working (piston 13 beginnings that are hydraulic jack 14 are outwards moved), the driver slammed brake.When the piston 13 of hydraulic jack 14 outwards moves, piston flange dish 12, the tooth bar ring flange 11 of power through piston 13 outer ends of hydraulic jack 14 is sent to tooth bar 8, tooth bar 8 moves forward like this, thereby driven gear 6 rotates with gear shaft 9.Gear shaft 9 drives first cylinder 3-1 rotation through the rotating shaft 2 of torsion torque sensor 5, the first cylinder 3-1.And motor vehicle is slammed by the driver owing to brake; Like this between the wheel and the first cylinder 3-1 because function of friction; Wheel applies a reciprocal power to cylinder, and the rotating shaft 2 of this power through the first cylinder 3-1 passes to torsion torque sensor 5, thereby torsion torque sensor 5 induces torsion signal.This signal is sent to computing machine through data line, and converting through computing machine to obtain the damping force of this motor vehicle institute measuring car wheel.
After measurement finished, driver's steering vehicle left, and operating personnel control hydraulic jack 14 work, and the piston 13 of hydraulic jack 14 is to motion in the other direction, and drive tooth bar 8 turns back to reference position, thereby measured ready for next step.
Claims (3)
1. the drum-type braking force test device that promotes of an oil cylinder; It is characterized in that: comprise hydraulic jack (14), tooth bar (8), gear (6), gear shaft (9) and two brakings and test cell; The piston (13) of said hydraulic jack (14) is fixedly connected with an end of tooth bar (8); The other end of tooth bar (8) and gear (6) engagement; Gear shaft (9) runs through gear (6), and said two brakings and test cell connect with the two ends of gear shaft (9) respectively symmetrically, are respectively equipped with clutch shaft bearing and bearing seat (1-1) between the outer face of each said braking and test cell and gear (6); Said gear shaft (9) runs through clutch shaft bearing and bearing seat (1-1), is provided with anti-offset assembly on said tooth bar (8) side; In each said braking and test cell; Comprise torsion torque sensor (5), first cylinder (3-1) and second tin roller (3-2); The two ends of the rotating shaft (2) of first cylinder (3-1) and the rotating shaft (2) of second tin roller (3-2) are installed with one second bearing and bearing seat (1-2) respectively; One end of the rotating shaft (2) of first cylinder (3-1) connects with an end of torsion torque sensor (5), and the other end of torsion torque sensor (5) connects with gear shaft (9).
2. the drum-type braking force test device that a kind of oil cylinder according to claim 1 promotes; It is characterized in that: said anti-offset assembly comprises three bearings (7); Wherein two bearings (7) place the both sides of tooth bar (8) symmetrically; Another bearing (7) places the below of tooth bar (8), and tooth bar (8) contacts with the outside surface of the cylindrical of said three bearings (7) respectively.
3. the drum-type braking force test device that a kind of oil cylinder according to claim 2 promotes is characterized in that: said anti-offset assembly is located at the position at the centre portion place of tooth bar (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102148842A CN101907504B (en) | 2010-06-29 | 2010-06-29 | Oil cylinder-propelled drum type braking force test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102148842A CN101907504B (en) | 2010-06-29 | 2010-06-29 | Oil cylinder-propelled drum type braking force test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101907504A CN101907504A (en) | 2010-12-08 |
| CN101907504B true CN101907504B (en) | 2012-02-22 |
Family
ID=43263027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102148842A Expired - Fee Related CN101907504B (en) | 2010-06-29 | 2010-06-29 | Oil cylinder-propelled drum type braking force test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101907504B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411721B (en) * | 2013-07-26 | 2015-01-21 | 太仓中博铁路紧固件有限公司 | Bolt torque detection device |
| CN112777537B (en) * | 2021-02-15 | 2023-11-28 | 山西高行液压股份有限公司 | Heavy-duty driving device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB231741A (en) * | 1924-08-26 | 1925-04-09 | Charles Francis Cowdrey | A new or improved brake testing device for automobiles |
| DE2427499A1 (en) * | 1974-06-07 | 1975-12-18 | Inst De Studii Si Cercetari Tr | Brake test apparatus for vehicle - has hydraulic axle loading device to prevent blocking of vehicle wheels |
| CN2064052U (en) * | 1989-09-02 | 1990-10-17 | 王豪良 | Testing machine for braking force of automobile |
| CN1280617C (en) * | 2004-11-25 | 2006-10-18 | 潍柴动力股份有限公司 | Exhausting braking measurement device of diesel engine |
| CN101458163A (en) * | 2008-11-13 | 2009-06-17 | 陶泽成 | Tester for bicycle brake performance |
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2010
- 2010-06-29 CN CN2010102148842A patent/CN101907504B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101907504A (en) | 2010-12-08 |
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Granted publication date: 20120222 Termination date: 20140629 |
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