CN205691344U - Sedan lifted type air bag lifting brake testing stand - Google Patents

Sedan lifted type air bag lifting brake testing stand Download PDF

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Publication number
CN205691344U
CN205691344U CN201620503894.0U CN201620503894U CN205691344U CN 205691344 U CN205691344 U CN 205691344U CN 201620503894 U CN201620503894 U CN 201620503894U CN 205691344 U CN205691344 U CN 205691344U
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CN
China
Prior art keywords
air bag
lifting
frame
assembly
platform
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Withdrawn - After Issue
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CN201620503894.0U
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Chinese (zh)
Inventor
苏建
张雪平
张益瑞
牛治慧
陈雷
于桂范
于桂波
张萍萍
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CHANGCHUN SUJIAN NEW TECHNOLOGY DEVELOPMENT Co Ltd
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CHANGCHUN SUJIAN NEW TECHNOLOGY DEVELOPMENT Co Ltd
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Priority to CN201620503894.0U priority Critical patent/CN205691344U/en
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Publication of CN205691344U publication Critical patent/CN205691344U/en
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Abstract

This utility model relates to a kind of Sedan lifted type air bag lifting brake testing stand.Its technical scheme includes: platform side is strengthened truss and welded body with U-shaped frame assembly and be fixed on the both sides of brake platform framework and the base of anti-force rolling brake testing platform;Anti-force rolling brake testing platform is lifted to certain altitude with directive wheel general assembly body by lifting two set U-frame frame general assembly body by four set barreled air bag assemblies;Sensor calibration system is arranged on 1, No. 2 stand air bag lifting devices before testing stand formally uses, and demarcates 1, No. 2 cantilever beam weighting transducers respectively;Air bag lift control system is arranged on testing stand one end, by controlling the inflatable and deflatable lifting controlling anti-force rolling brake testing platform and the landing of air bag.This testing stand solve need badly on current market a kind of have stage body lifting function load brake test bench to check multiaxis lorry, by and fill the problem of the truck combination braking safety that axle semitrailer forms, it is rational in infrastructure, and cost is relatively low.

Description

Sedan lifted type air bag lifting brake testing stand
Technical field
This utility model relates to a kind of braking performance detector being applied to automobile, more specifically, it relates to a kind of Sedan lifted type air bag lifting brake testing stand.
Background technology
On stand, braking ability is carried out according to regulation vehicle in GB7258-2012 " motor vehicles safe and technical specification " During detection, it is desirable to the brake force summation of vehicle and the percentage ratio of complete vehicle weight and axle braking force must reach with the percentage ratio of axle load To certain numerical value, but existing vehicle detection industry major part is all, at vehicle Light Condition, it is braked performance detection , and in actual motion, major part vehicle is at load condition, for its unloaded and load condition of general passenger car The change of lower weight ratio is inconspicuous, then the unloaded brake force detected can substitute for loading and is even fully loaded with brake force;But for goods Car, especially multiaxis lorry, by and fill the truck combination that axle semitrailer forms, its actual operating loading mass is far longer than The weight of its vehicle own, then its load brake power will be far longer than unloaded brake force, therefore can not be by the unloaded brake force of detection Brake force when replacing it to load even full load condition, this just requires heavy vehicle sky to be carried out when carrying out vehicle detection Carry braking forces measuring and be also performed to the detection of load brake power.
GB21861 " Vehicle Security inspection project and method " Plays revision according to up-to-date revision gives top priority to what is the most important Vehicle, enhances school bus, large and medium bus, weight medium truck, the safe practice examination requirements of trailer.For multiaxis lorry, by And the truck combination filling axle semitrailer composition to carry out loading brake inspection, then use the cylinder counter-force with stage body lifting function Formula brake test bench, is loaded test axle by lifting stage body, measures axle load under surveyed axle loaded condition, and calculate on request Load braking ratio per axle, load axle brake imbalance rate.
In the existing patent about lifting brake platform, have plenty of in anti-force type roller test stand bottom installation structure complexity Hydraulic lifting mechanism, this mode not only floor space is relatively big, stage body lifting the most difficult control of stationarity;Have plenty of liquid Cylinder pressure is arranged on anti-force type drum braking platform side and directly lifts, but the rational height of hydraulic cylinder is less than anti-force type drum braking platform Upper surface, this artificial lifting way is relatively costly, it is also difficult to realizes brake platform and steadily lifts, and loads in lifting state Brake platform rollover phenomenon it is susceptible to during braking performance test.
Utility model content
Technical problem to be solved in the utility model is to need badly on current market a kind of to have adding of stage body lifting function Carry brake test bench check multiaxis lorry, by and the problem that fills the truck combination braking safety that axle semitrailer forms, it is provided that A kind of rational in infrastructure, lower-cost Sedan lifted type air bag lifting brake testing stand.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that realization, and accompanying drawings is as follows:
A kind of Sedan lifted type air bag lifting brake testing stand, is strengthened truss and U-shaped by anti-force rolling brake testing platform, platform side Frame assembly welding body, stand air bag lifting device, sensor calibration system and air bag lift control system composition, described stand Air bag lifting device is made up of 1, No. 2 stand air bag lifting devices 3,4, and its structure is identical is symmetrically mounted on the rolling of existing anti-force type At four angles at cylinder brake tester 1 two ends, and it is arranged on concrete foundation I by foundation bolt, described 1, No. 2 stand gas Capsule lifting device 3,4 is formed with directive wheel general assembly body 13,14 by 1, No. 2 barreled air bag assemblies;Reinforcement purlin, described side Frame welds body 2 and is fixed on the both sides of brake platform framework and the base of anti-force rolling brake testing platform 1 with U-shaped frame assembly, uses Strengthen the bearing strength of anti-force rolling brake testing platform 1;Described four set barreled air bag assemblies and directive wheel general assembly body 13,14 by lifting two set U-frame frame general assembly body, anti-force rolling brake testing platform 1 is lifted to certain altitude;Described Sensor calibration system 5 is arranged on 1, No. 2 stand air bag lifting devices 3,4 before testing stand formally uses, respectively to 1, No. 2 1, No. 2 cantilever beam weighting transducers 15,16 in stand air bag lifting device 3,4 are demarcated, to guarantee the detection of testing stand Precision;Described air bag lift control system 6 is arranged on testing stand one end, controls counter-force by controlling the inflatable and deflatable of air bag The lifting of formula Roller brake tester 1 and landing.
Described platform side strengthen truss weld with U-shaped frame assembly body 2 by 1, No. 2 platform sides reinforcement truss welding bodies 7,8, platform Truss horizontal-associate channel-section steel 9 is strengthened in side and 1, No. 2 U-frame framves form with Lifting air sac assembly 10,11, and described 1, No. 2 platform sides are strengthened Truss welding body 7,8 structure is identical, by a long channel-section steel of longitudinal direction and a long square steel tube of longitudinal direction and some vertical short grooves Steel is welded, and two long square steel tubes of longitudinal direction are strengthened truss horizontal-associate channel-section steel 9 by platform side and welded together, steel pipe two ends are welded on 1, On U-frame frame 17 in No. 2 U-frame framves and Lifting air sac assembly 10,11.
Described 1, No. 2 barreled air bag assemblies are identical with directive wheel general assembly body 13,14 structure, and the two is respectively by 1,2 Number cantilever beam weighting transducer 15,16 is symmetricly set at the left and right sides U-shaped mouth of U-frame frame 17, and all with U-shaped frame assembly Assembly 12 overlaps along the symmetrical centre face of vehicle heading;Described 1, No. 2 cantilever beam weighting transducers 15,16 are by sensing Device supports bulb bowl plastic cement seat and is arranged on air bag lifting mandrel lifting travel adjustment plug 31;
Upper guide pulley assembly 30 in described 1, No. 2 barreled air bag assemblies and directive wheel general assembly body 13,14 and Lower directive wheel and bearing assembly 44, all with the lateral surface of the square steel tube of U-frame frame 17 both sides as guide rail, to anti-force type cylinder system That moves platform 1 elevating movement plays guide support effect.
Described 1, number barreled air bag assembly and directive wheel general assembly body 13,14, mainly by upper guide pulley assembly 30, Air bag lifting mandrel lifting travel adjusts plug 31,35,1, No. 2 side force strut angle assemblings of air bag air hose and joint assembly Body 36,37, Lifting air sac assembly 42 and lower directive wheel form with bearing assembly 44, and described upper guide pulley assembly 30 is solid Being scheduled on tubular bladder support upper plate 32, the two symmetrical centre face overlaps, and described lower directive wheel is fixed with bearing assembly 44 In lower directive wheel bearing mounting seat 57 on tubular air bag support base plate 34, its symmetrical centre face is assembled with upper guide pulley The symmetrical centre face of body 30 overlaps, and described 1, No. 2 side force strut angle assemblies 36,37 are arranged on tubular bladder support upper plate The rear side of 32 upper surfaces, described Lifting air sac assembly 42 is arranged on air bag top attachment dish 41 and air bag flange in the bottom tie-plate Between 43, described air bag flange in the bottom tie-plate 43 is arranged on the air bag flange in the bottom tie-plate within tubular air bag support 33 In mounting seat 48, described air bag air hose is arranged on by air bag flange in the bottom tie-plate 43 with one end of joint assembly 35 The bottom of Lifting air sac assembly 42, the other end is passed by hole by the air bag appendix on tubular air bag support 33, then It is connected with air bag lift control system assembly 6 by air hose.
Described U-frame frame general assembly body 12 is made up of support crossbeam 18 on U-frame frame 17 and U-frame frame, and the two leads to Crossing bolt-connection together, U-frame frame 17 is U-shaped structural framing, described U-frame frame supports crossbeam 18 by U-frame frame Support crossbeam square tube 24, entablature are welded with U-frame frame left and right side connecting plate 28,29.
Described upper guide pulley assembly 30 is by the upper guide pulley 66 upper guide pulley bearing group identical with two structures Becoming, described upper guide pulley 66 is made up of upper guide pulley intermediate calender rolls 74 and upper guide pulley left and right side block plate 75,76, institute State the length of guide pulley intermediate calender rolls 74 identical with the width of the rectangular steel tube column of U-frame frame 17, described upper orienting roll Cylinder 66 moves with the touch with the outer surface rolling of the rectangular steel tube column of U-frame frame 17, and upper guide pulley 66 is arranged on orienting roll In cylinder support shaft 67, the rotation centerline of the two overlaps;
Described lower directive wheel and bearing assembly 44 are by lower directive wheel 77, lower directive wheel support shaft 78, lower guide wheel shaft Bearing 79 and lower directive wheel bearing conjoined pad composition, described lower directive wheel 77 is arranged on lower guiding by lower directive wheel support shaft 78 In two lower guide wheel shaft mounting ear ring seats of axle support 79.
Described tubular air bag support 33 is a barrel-like structure, tubular air bag support pipe 46, tubular air bag prop up Seat upper junction plate 45, tubular air bag support lower connecting plate 47 and air bag flange in the bottom tie-plate mounting seat 48 are welded, institute State the upper and lower connecting plate of tubular air bag support 45,47 and be annular connecting plate, it is along the circumferential direction uniformly arranged under several Bolt thread through hole, air bag flange in the bottom tie-plate mounting seat 48 is welded on the inside of tubular air bag support pipe 46, is used for pacifying Dress air bag flange in the bottom tie-plate 43;At tubular air bag support pipe 46 at bottom, it is provided with 1, No. 2 air bag appendixs and leads to Via 49,50 and lower directive wheel bearing are symmetricly set on circle by hole 49,50 in 180 degree by hole 51,1,2 air bag appendix Tubular bladder seat tube 46 both sides, convenient different barreled air bag assemblies and directive wheel general assembly body install air bag air hose with Joint assembly 35, tubular air bag support 33 is not only Lifting air sac assembly 42 and provides vertical support, to Lifting air sac yet Catenary motion during inflation venting plays guide effect, overcomes the uneven stability of air bag itself.
Described tubular bladder support upper plate 32 is lifted mandrel by tubular bladder support upper plate disk 52 and air bag and leads Form to hole 53;Described air bag top attachment dish 41 is lifted mandrel mounting seat 55 by air bag top attachment dish disk 54 and air bag Composition;Described tubular air bag support base plate 34 is installed by tubular air bag support base plate square plate 56 and lower directive wheel bearing Seat 57 is welded;Described air bag lifting mandrel 40 is by air bag lifting major axis 59, air bag lifting mandrel nylon jacket lower block platform 60 Form with air bag lifting spindle flanges base 61.
Described air bag lift control system assembly 6 is by air shut-off valve 93,94, No. 1 bi-bit bi-pass of air filter Electromagnetic valve 95,96, No. 2 two-position two-way solenoid valves 97 of threeway connecting tube, acoustic filter tubulature 98 and acoustic filter 99 form, to lifting During airbag aeration, open air shut-off valve 93 and No. 1 two-position two-way solenoid valve 95, air through air filter 94 filter after, Four air hoses through threeway connecting tube 96 lower end are transported in four Lifting air sacs, and air bag intake process is gradually by anti-force type Drum braking platform 1 lifting;When Lifting air sac is exitted, close air shut-off valve 93 and No. 1 two-position two-way solenoid valve 95, open 2 Number two-position two-way solenoid valve 97, air is discharged in air via acoustic filter tubulature 98 by acoustic filter 99, and air bag is in venting Anti-force type drum braking platform 1 is gradually fallen by process.
Described sensor calibration system 5 is to be demarcated 84, No. 2 power of counter-force screw rod by No. 1 power to demarcate counter-force screw rod 85, standard Load measurement instrument 86, sensor calibration system square tube beam 87, metering institute sensor 88 and hydraulic jack 89 form, described Sensor calibration system square tube beam 87 is by two different lengths but the identical sensor calibration system square tube entablature of thickness 90 and sensor calibration system square tube sill 91 be welded, described 1, No. 2 power are demarcated counter-force screw rods 84,85 and are respectively symmetrically Being vertically mounted on the two ends of sensor calibration system square tube sill 91, the symmetrical centre face of the two is all and sensor calibration system The symmetrical centre face of square tube beam 87 overlaps;Described metering institute sensor 88 is fixedly mounted under sensor calibration system square tube The bottom face center position of crossbeam 91, the upper end of hydraulic jack 89 contacts connection with measuring institute's sensor 88, the rotation of the two Turn centrage to overlap and all (this symmetrical centre face and vehicle traveling side on the symmetrical centre face of U-frame frame general assembly body 12 To vertical);Gauge load measuring instrument 86 is fixedly mounted on the upper surface center of sensor calibration system square tube entablature 90 Place.
Compared with prior art the beneficial effects of the utility model are:
Sedan lifted type air bag lifting brake testing stand the most described in the utility model utilizes Sedan lifted type principle to use barreled air bag Mode is braked the overall lifting of platform by directive wheel, and anti-force type drum braking platform is positioned at two U-shaped frame assemblies, four The lifting point of application of air bag is higher than brake platform upper surface, and the Sedan lifted type principle of employing is by brake platform lifting or landing, this mode Ensure that steadily rising and landing of brake platform, novel in structural design is unique.
It is total that Sedan lifted type air bag lifting brake testing stand the most described in the utility model employing four is arranged on two U-frame framves Barreled air bag assembly on one-tenth lifts with directive wheel general assembly body, and tubular bearing is providing bottom support for air bag Simultaneously, it is also possible to provide lateral circumferential support to air bag, overcome the flexibility of air bag itself, make brake platform in lifting process Good levelness, upper and lower directive wheel assembly can be kept the most reasonably to be arranged on tubular bearing top and bottom, knot Structure compact and reasonable, is greatly saved cost and takes up an area space.
The axle of four upper guide pulleys that Sedan lifted type air bag lifting brake testing stand the most described in the utility model is comprised Line is all the time more than brake platform upper surface, it is possible to ensure to carry out loading braking performance test after being lifted to require height by brake platform Time, brake platform will not occur the phenomenon of rollover, it is ensured that the know clearly safety of detection process and the accuracy of testing result.
Sedan lifted type air bag lifting brake testing stand the most described in the utility model uses cantilever type weighing sensor to install Above four barreled air bags, it is possible to measuring the axle weight measuring tested axletree before brake force, by conventional Platform balance for shaft weight and Brake platform combines, and improves detection efficiency, reduces floor space simultaneously.
Sedan lifted type air bag lifting brake testing stand the most described in the utility model is on original anti-force type drum braking platform Weld platform side reinforcement truss and welded body with U-shaped frame assembly, improve rigidity and the intensity of braking stand, made brake platform lift When rising state-detection loading brake force, will not deform even phenomenon of rupture.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is further described:
The axonometric projection that Fig. 1 is Sedan lifted type air bag lifting brake testing stand described in the utility model to be assembled with ground regards Figure;
Fig. 2 is the axonometric projection view of Sedan lifted type air bag lifting brake testing stand described in the utility model;
Fig. 3 is the forward sight projection view of Sedan lifted type air bag lifting brake testing stand described in the utility model;
Fig. 4 is that truss and U-frame frame are strengthened in the platform side of Sedan lifted type air bag lifting brake testing stand described in the utility model The axonometric projection view of assembly welding body;
Fig. 5 is that the axle of the stand air bag lifting device of Sedan lifted type air bag lifting brake testing stand described in the utility model is surveyed Projection view;
Fig. 6 is the forward sight of the stand air bag lifting device of Sedan lifted type air bag lifting brake testing stand described in the utility model Projection view;
Fig. 7 is that the stand air bag lifting device of Sedan lifted type air bag lifting brake testing stand described in the utility model is (without circle Tubular air bag support) forward sight projection view;
Fig. 8 is the axle of the U-frame frame general assembly body of Sedan lifted type air bag lifting brake testing stand described in the utility model Survey projection view;
Fig. 9 is the axonometric projection view of the U-frame frame of Sedan lifted type air bag lifting brake testing stand described in the utility model;
Figure 10 is the axle supporting crossbeam on the U-frame frame of Sedan lifted type air bag lifting brake testing stand described in the utility model Survey projection view;
Figure 11 is No. 1 barreled air bag assembly and the guiding of Sedan lifted type air bag lifting brake testing stand described in the utility model The axonometric projection view of wheel assembly assembly;
Figure 12 is No. 1 barreled air bag assembly and the guiding of Sedan lifted type air bag lifting brake testing stand described in the utility model The section view projection view of wheel assembly assembly;
Figure 13 is that the axle of the tubular air bag support of Sedan lifted type air bag lifting brake testing stand described in the utility model is surveyed Projection view;
Figure 14 is the non-etc. of the tubular air bag support of Sedan lifted type air bag lifting brake testing stand described in the utility model Axonometric projection view;
Figure 15 is the tubular bladder support upper plate of Sedan lifted type air bag lifting brake testing stand described in the utility model Axonometric projection view;
Figure 16 is the tubular bladder support upper plate of Sedan lifted type air bag lifting brake testing stand described in the utility model Section view projection view;
Figure 17 is that the axle of the air bag top attachment dish of Sedan lifted type air bag lifting brake testing stand described in the utility model is surveyed Projection view;
Figure 18 is the tubular air bag support base plate of Sedan lifted type air bag lifting brake testing stand described in the utility model Axonometric projection view;
Figure 19 is that the axle of the air bag lifting mandrel of Sedan lifted type air bag lifting brake testing stand described in the utility model surveys throwing Video display figure;
Figure 20 is that the section view of the air bag lifting mandrel of Sedan lifted type air bag lifting brake testing stand described in the utility model is thrown Video display figure;
Figure 21 is the air bag lifting mandrel lifting travel of Sedan lifted type air bag lifting brake testing stand described in the utility model Adjust the axonometric projection view of plug;
Figure 22 is the axle of the upper guide pulley assembly of Sedan lifted type air bag lifting brake testing stand described in the utility model Survey projection view;
Figure 23 is the axle of No. 1 upper guide pulley bearing of Sedan lifted type air bag lifting brake testing stand described in the utility model Survey projection view;
Figure 24 is the axonometric projection of the upper guide pulley of Sedan lifted type air bag lifting brake testing stand described in the utility model View;
Figure 25 is lower directive wheel and the bearing assembly of Sedan lifted type air bag lifting brake testing stand described in the utility model Axonometric projection view;
Figure 26 is that the axle of the lower guide wheel shaft bearing of Sedan lifted type air bag lifting brake testing stand described in the utility model is surveyed Projection view;
Figure 27 is that the axle of the sensor calibration system of Sedan lifted type air bag lifting brake testing stand described in the utility model is surveyed Projection view;
Figure 28 is that the sensor calibration system square tube of Sedan lifted type air bag lifting brake testing stand described in the utility model is horizontal The axonometric projection view of beam;
Figure 29 is the axle rising air bag fall control system of Sedan lifted type air bag lifting brake testing stand described in the utility model Survey projection view;
In figure: I. concrete foundation, II. Sedan lifted type barreled air bag lifting brake testing stand, the 1. examination of anti-force type drum braking Testing platform, 2. a side reinforcement truss welds body with U-shaped frame assembly, No. 3.1 stand air bag lifting devices, and No. 4.2 stand air bags are lifted Liter device, 5. sensor calibration system, 6. air bag lift control system assembly, No. 7.1 platform sides reinforcement truss welding bodies, 8.2 Truss welding body is strengthened in number platform side, and 9. truss horizontal-associate channel-section steel is strengthened in a side, No. 10.1 U-frame framves and Lifting air sac assembly, No. 11.2 U-frame framves and Lifting air sac assembly, 12.U shape frame assembly assembly, No. 13.1 barreled air bag assemblies and directive wheel General assembly body, No. 14.2 barreled air bag assemblies and directive wheel general assembly body, No. 15.1 cantilever beam weighting transducers, No. 16.2 Cantilever beam weighting transducer, 17.U shape framework, 18.U shape framework supports crossbeam, 19.U shape framework square tubes soldering body, No. 20.1 U Shape framework and entablature connecting plate, No. 21.2 U-frame framves and entablature connecting plate, No. 22.1 cantilever beam weighting transducers are installed Plate, No. 23.2 cantilever beam weighting transducer installing plates, support crossbeam square tube on 24.U shape framework, 25. hydraulic jack top support seats, No. 26.1 U-frame framves and entablature overhead gage, No. 27.2 U-frame framves and entablature overhead gage, 28. entablatures are left with U-frame frame Side connecting plate, 29. entablatures and U-shaped frame right connecting plate, guide pulley assembly on 30., 31. air bag lifting mandrel liftings Traffic control system plug, 32. tubular bladder support upper plates, 33. tubular air bag supports, 34. tubular air bag support base plates, 35. Air bag air hose and joint assembly, No. 36.1 side force strut angle assemblies, No. 37.2 side force strut angle assemblies, 38. power demarcate counter-force bolt and nut, 39. some foundation bolt assemblies, 40. air bag lifting mandrels, 41. air bag top attachment Dish, 42. Lifting air sac assemblies, 43. air bag flange in the bottom tie-plates, 44. times directive wheels and bearing assembly, 45. tubulars Air bag support upper junction plate, 46. tubular air bag support pipes, 47. tubular air bag support lower connecting plates, method bottom 48. air bags Blue tie-plate mounting seat, No. 49.1 air bag appendixs are by hole, and No. 50.2 air bag appendixs are by hole, 51. times directive wheel bearings By hole, 52. tubular bladder support upper plate disks, 53. air bag lifting mandrel pilot holes, 54. air bag top attachment dish disks, 55. air bag lifting mandrel mounting seat, 56. tubular air bag support base plate square plates, 57. times directive wheel bearing mounting seats, 58. Lower directive wheel bearing side force carrying bolt mounting seat, 59. air bag lifting major axis, 60. air bag lifting mandrel nylon jacket lower block platforms, 61. air bag lifting spindle flanges bases, 62. air bag lifting mandrel lifting travels adjust plug installing hole, 63. air bag lifting mandrel Buddhist nuns The actor playing a supporting role, 64. air bag lifting mandrel lifting travels adjust plug top plug, and 65. air bag lifting mandrel lifting travels adjust plug bolt column, Guide pulley on 66., guide pulley support shaft on 67., No. 68.1 upper guide pulley bearings, No. 69.1 upper guide pulley bearing connection Body pad, No. 70.2 upper guide pulley bearings, No. 71.2 upper guide pulley bearing conjoined pads, on 72., guide pulley support shaft is installed Earrings, guide pulley bearing mounting seat on 73., guide pulley intermediate calender rolls on 74., block plate on the left of guide pulley on 75., Block plate on the right side of guide pulley on 76., 77. times directive wheels, 78. times directive wheel support shafts, 79. times guide wheel shaft bearings, No. 80.1 Lower directive wheel bearing conjoined pad, No. 81.2 lower directive wheel bearing conjoined pads, 82. times guide wheel shaft mounting ear ring seats, guide for 83. times Axle support base plate, No. 84.1 power demarcation counter-force screw rods, No. 85.2 power demarcation counter-force screw rods, 86. gauge load measuring instruments, 87. Sensor calibration system square tube beam, 88. metering institute sensors, 89. hydraulic jack, in 90. sensor calibration system square tubes Crossbeam, 91. sensor calibration system square tube sills, 92. metering institute sensor installing plates, 93. air shut-off valves, 94. air Filter, No. 95.1 two-position two-way solenoid valves, 96. threeway connecting tubes, No. 97.2 two-position two-way solenoid valves, 98. acoustic filters also fill Pipe, 99. acoustic filters
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
The purpose of this utility model is to provide a kind of Sedan lifted type air bag lifting brake testing stand, in testing agency pair Automobile especially multiaxis lorry, by and fill the truck combination that axle semitrailer forms and carry out desk-top loading braking performance test, judge vapour Whether car brake force under loading even full load condition meets the requirements.Sedan lifted type air bag lifting brake described in the utility model Testing stand installs two set stand air bag lifting devices at the two ends of existing brake tester, uses the mode profit of four barreled air bags With carrying a sedan, principle can lift landing brake tester smoothly by guide wheel device, and ensure that brake platform is loading Lifting state do not occur turn on one's side phenomenon, rational in infrastructure simply, there is good Social benefit and economic benefit.
Refering to Fig. 1 to Fig. 3, Sedan lifted type air bag lifting brake testing stand II described in the utility model is horizontally arranged at coagulation In soil base I;Sedan lifted type air bag lifting brake testing stand II is to be strengthened truss and U by anti-force rolling brake testing platform 1, platform side Shape frame assembly welding body 3, No. 2 stand air bag lifting devices 4 of 2, No. 1 stand air bag lifting device, sensor calibration system 5 and Air bag lift control system 6 forms.
Described Sedan lifted type air bag lifting brake testing stand II is at the two ends of existing anti-force rolling brake testing platform 1 It is symmetrically installed No. 1 stand air bag lifting device 3 and 4, No. 1 stand air bag lifting device 3 of No. 2 stand air bag lifting devices and No. 2 It is internal that stand air bag lifting device 4 is arranged on concrete foundation I by foundation bolt, No. 1 stand air bag lifting device 3 and No. 2 Stand air bag lifting device 4 structure composition is identical and all includes No. 1 barreled air bag assembly and directive wheel general assembly body and 2 Number barreled air bag assembly and directive wheel general assembly body, four set barreled air bag assemblies are symmetricly set on directive wheel general assembly body Four lifting devices are formed at four angles of anti-force rolling brake testing platform 1;Platform side is strengthened truss and is welded with U-shaped frame assembly Body 2 is welded on both sides and the base of the brake platform framework of anti-force rolling brake testing platform 1, strengthens the examination of anti-force type drum braking Test the bearing strength of platform 1, it is to avoid anti-force type drum braking occurs when lifting state carries out desk-top loading braking performance test to automobile Testing stand 1 deforms or condition in damaged;Four set barreled air bag assemblies and directive wheel general assembly body are total by lifting two set U-frame frame Assembly is become to strengthen truss and weld the anti-force rolling brake testing platform 1 of body 2 by being welded with platform side with U-shaped frame assembly and be lifted to Certain altitude;Sensor calibration system 5 is to be arranged on No. 1 stand air bag lifting device 3 and No. 2 platforms before testing stand formally uses On frame air bag lifting device 4, respectively No. 1 cantilever beam weighting transducer 15 in No. 1 stand air bag lifting device 3 and No. 2 are hanged No. 1 cantilever beam weighting transducer 15 in arm beam load cell 16 and No. 2 stand air bag lifting devices 4 and No. 2 cantilever beams LOAD CELLS 16 is demarcated, to guarantee the accuracy of detection of Sedan lifted type air bag lifting brake testing stand II;Air bag elevating control System 6 is arranged on Sedan lifted type air bag lifting brake testing stand II left end, controls counter-force by controlling the inflatable and deflatable of air bag The lifting of formula Roller brake tester 1 and landing.
Refering to Fig. 4, described platform side reinforcement truss welds body 2 and comprises No. 1 platform side reinforcement truss welding with U-shaped frame assembly Truss welding body 8 is strengthened in 7, No. 2 platform sides of body, 9, No. 1 U-frame frame of truss horizontal-associate channel-section steel and Lifting air sac assembly 10 are strengthened in platform side With No. 2 U-frame framves and Lifting air sac assembly 11.Truss welding body 7 and No. 2 platform sides reinforcement truss welding bodies 8 are strengthened in No. 1 platform side Structure composition is identical, is all by a long channel-section steel of longitudinal direction and a long square steel tube of longitudinal direction and some vertical short channel-section steel welding The truss structure become, the two is strengthened truss horizontal-associate channel-section steel 9 by platform side and welds together;Truss welding body 7 He is strengthened in No. 1 platform side The long channel-section steel of longitudinal direction and the some vertical short channel-section steels of No. 2 platform side reinforcement truss welding bodies 8 are respectively welded at anti-force type drum braking On the braking stand dual-side of testing stand 1, the long square steel tube of longitudinal direction of the two is all welded on the system of anti-force rolling brake testing platform 1 The bottom of dynamic stand, platform side reinforcement truss horizontal-associate channel-section steel 9 is arranged on the horizontal of the braking stand of anti-force rolling brake testing platform 1 Position, middle;No. 1 U-frame frame and Lifting air sac assembly 10 it is respectively welded at bottom the two ends of two long square steel tubes of longitudinal direction With No. 2 U-frame framves with on the U-frame frame 17 in Lifting air sac assembly 11, thus greatly strengthen anti-force type drum braking The bearing capacity of platform 1;Existing anti-force type drum braking platform 1 is all in inside ground, due to ground support its carrying out Typically will not deform during braking forces measuring and or rupture impaired, but when carrying out desk-top loading braking performance test, counter-force Formula drum braking platform 1 be lifted to certain altitude depart from ground support, to automobile especially to multiaxis lorry, by and fill axle When the bigger automobile of these axle anharmonic ratioes of truck combination of semitrailer composition carries out loading braking performance test, anti-force type drum braking platform 1 Braking stand easily deform even Broken condition, platform side is strengthened truss and weld body 2 and anti-force type rolling with U-shaped frame assembly The braking stand of cylinder brake platform 1 welds together, and not only increases its longitudinal rigidity and prevents its linear deformation or fracture, also strengthens Its lateral stiffness prevents it from side web-like condition occurring.
Refering to Fig. 5 to Fig. 7, No. 1 stand air bag lifting device 3 described in the utility model and No. 2 stand air bag lifting dresses Put 4 structure compositions identical, all include 12, No. 1 barreled air bag assembly of U-frame frame general assembly body and directive wheel general assembly 14, No. 1 cantilever beam weighting transducer 15 of 13, No. 2 barreled air bag assemblies of body and directive wheel general assembly body and No. 2 cantilever beams are weighed Sensor 16.No. 1 barreled air bag assembly and directive wheel general assembly body 13 and No. 2 barreled air bag assemblies and directive wheel general assembly Body 14 structure composition is identical, and the two is respectively by No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beam weighting transducers 16 It is symmetricly set on the left and right sides of the U-frame frame 17 of U-frame frame general assembly body 12, No. 1 cantilever beam weighting transducer 15 and No. 2 Under the cantilever beam weighting transducer 16 short square steel tube port by the U-shaped mouth both sides of two bolts symmetrical peace respectively U-frame frame 17 Side, the symmetrical centre face of No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beam weighting transducers 16 overlaps, and all with U-frame frame General assembly body 12 overlaps along the symmetrical centre face of vehicle heading;No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beams claim Weight sensor 16 is arranged on No. 1 barreled air bag assembly and directive wheel general assembly body 13 by sensor support bulb bowl plastic cement seat Adjust on plug 31 with the air bag lifting mandrel lifting travel in directive wheel general assembly body 14 with No. 2 barreled air bag assemblies;No. 1 bucket Dress air bag assembly and the upper guiding in directive wheel general assembly body 13 and No. 2 barreled air bag assemblies and directive wheel general assembly body 14 Cylinder assembly 30 and lower directive wheel and bearing assembly 44 are all using the lateral surface of the square steel tube of U-frame frame 17 both sides as leading Rail, the lateral surface of the square steel tube of U-frame frame 17 both sides processes to smooth surface through polishing;No. 1 barreled air bag assembly and guiding Wheel assembly assembly 13 and No. 2 barreled air bag assemblies and the upper guide pulley assembly 30 in directive wheel general assembly body 14 and under Directive wheel and bearing assembly 44 not only act as the guide effect to anti-force type drum braking platform 1 elevating movement, additionally it is possible to it Play lateral support effect and ensure the stationarity of lifting process;No. 1 barreled air bag assembly and directive wheel general assembly body 13 and No. 2 Barreled air bag assembly and directive wheel general assembly body 14 are arranged on concrete foundation I by several foundation bolts respectively.
No. 1 stand air bag lifting device 3 is identical with No. 2 stand air bag lifting device 4 structure compositions, is separately mounted to The two ends, left and right of anti-force type drum braking platform 1, travel centrage about vehicle detection symmetrical;No. 1 stand air bag lifting dress Put No. 1 barreled air bag assembly in 3 and No. 2 stand air bag lifting devices 4 and directive wheel general assembly body 13 and No. 2 barreled air bags Assembly and directive wheel general assembly body 14 are respectively by No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beam weighting transducers 16 Lifting U-frame frame general assembly body 12, and then strengthen truss by No. 1 platform side being welded on U-frame frame general assembly body 12 Anti-force type drum braking platform 1 is raised to certain height by the long square steel tube of longitudinal direction of welding body 7 and No. 2 platform side reinforcement truss welding bodies 8 Degree;Lead on the upper guide pulley assembly 30 of in No. 1 stand air bag lifting device 3 and No. 2 stand air bag lifting devices 4 four Axis to cylinder support axle 67 is consistently higher than the upper surface of anti-force type drum braking platform 1, is so avoided that anti-force type cylinder system Dynamic platform 1, when lifting state carries out desk-top loading braking performance test to vehicle, is turned on one's side due to the effect of inertia of vehicle traveling Phenomenon, it is ensured that the safety of detection and the accuracy of testing result.
Refering to Fig. 8 to Figure 10, U-frame frame general assembly body 12 described in the utility model includes U-frame frame 17 and U-frame Supporting crossbeam 18 on frame, the two is by bolt-connection together.U-frame frame 17 is U-shaped structural framing, U-frame frame square tubes soldering Body 19 is its agent structure;U-frame frame square tubes soldering body 19 is to be mutually perpendicular to weldering by a foundation beam square tube and two steel pipe posts Connect and form, outside the U-shaped port of two steel pipe posts, be respectively welded the short square tube that two segment length are identical, short square tube and steel pipe Column is mutually perpendicular to;Inside the U-shaped port of U-frame frame square tubes soldering body 19, balanced welding then No. 1 U-frame frame is with entablature even Fishplate bar 20 and No. 2 U-frame framves and 21, No. 1 U-frame frame of entablature connecting plate and entablature connecting plate 20 and No. 2 U-frame framves are with upper Cross-beam connecting plate 21 is rectangle steel plate, and the inner surface of the two is the wedge-shaped surface of upper-thin-lower-thick, the four of rectangle steel plate Four upper bolt circle through holes it are uniformly arranged at individual angle;No. 1 cantilever beam weighting transducer installing plate 22 and No. 2 cantilever beam weighing and sensings Device installing plate 23 is respectively welded at the lower surface of two sections of short rectangular steel tubes outside the U-shaped port of U-frame frame square tubes soldering body 19, No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beam weighting transducers 16 are arranged on No. 1 cantilever beam by two stay bolts respectively On LOAD CELLS installing plate 22 and No. 2 cantilever beam weighting transducer installing plates 23;Outside two steel pipe posts of U-frame frame 17 Surface all processes to smooth surface through polishing, as upper guide pulley 66 and the guide rail of lower directive wheel 77.
Supporting crossbeam 18 on U-frame frame is by supporting crossbeam square tube 24, entablature on U-frame frame with U-shaped frame left even Fishplate bar 28 and entablature are welded with U-shaped frame right connecting plate 29;Entablature and U-shaped frame left connecting plate 28 and upper horizontal stroke Beam and U-shaped frame right connecting plate 29 are welded on U-frame frame the two ends supporting crossbeam square tube 24, both at No. 1 U-frame The rectangle steel plate that frame is identical with entablature connecting plate 21 size shape with entablature connecting plate 20 and No. 2 U-frame framves, and on it The bolt lower through-hole arranged the most respectively with No. 1 U-frame frame and entablature connecting plate 20 and No. 2 U-frame framves and entablature connecting plate On bolt on 21, through hole is the most corresponding;Entablature is connected with U-shaped frame right with U-shaped frame left connecting plate 28 and entablature The outer surface that plate 29 and No. 1 U-frame frame and entablature connecting plate 20 and No. 2 U-frame framves contact with entablature connecting plate 21 is Upper thick and lower thin wedge-shaped surface, with No. 1 U-frame frame and entablature connecting plate 20 and No. 2 U-frame framves with in entablature connecting plate 21 Wedge-shaped surface cooperates, and so greatly facilitates the installation supporting crossbeam 18 on U-frame frame 17 and U-frame frame;In order to make U-shaped Support crossbeam 18 on framework 17 and U-frame frame to firmly install, at entablature and U-shaped frame left connecting plate 28 and entablature and U The long limit upper surface of shape frame right connecting plate 29 is respectively welded one piece of No. 1 U-frame frame and entablature overhead gage 26 and No. 2 U-shapeds Framework and 27, No. 1 U-frame frame of entablature overhead gage and entablature overhead gage 26 and No. 2 U-frame framves with on entablature overhead gage 27 It is provided with three bolt circle through holes along long limit, can prevent from supporting on U-frame frame the play up and down of crossbeam 18 and U-frame frame 17;At U The upper surface center welding one piece supporting crossbeam square tube 24 on shape framework has certain thickness rectangle steel plate, is used for laying Hydraulic jack 89 in sensor calibration system 5, the effect of rectangle steel plate is the effect avoiding timing signal to concentrate due to stress The upper surface supporting crossbeam square tube 24 on U-frame frame is made to deform.
Refering to Figure 11 to Figure 12, No. 1 barreled air bag assembly described in the utility model and directive wheel general assembly body 13 and 2 Number barreled air bag assembly is identical with directive wheel general assembly body 14 structure composition, all include guide pulley assembly 30, Air bag lifting mandrel lifting travel adjusts plug 31, tubular bladder support upper plate 32, tubular air bag support 33, tubular air bag Base-plate 34, air bag air hose and joint assembly 36, No. 2 side force strut angles of 35, No. 1 side force strut angle assembly Assembly 37, some foundation bolt assemblies 39, air bag lifting mandrel 40, air bag top attachment dish 41, Lifting air sac assembly 42, air bag flange in the bottom tie-plate 43, lower directive wheel and bearing assembly 44 and air bag lifting mandrel nylon jacket 63.
Refering to Figure 13 to Figure 14, tubular air bag support 33 is a barrel-like structure, is tubular air bag support pipe 46, circle Tubular bladder bearing upper junction plate 45, tubular air bag support lower connecting plate 47 and air bag flange in the bottom tie-plate mounting seat 48 are welded Connect and form;Tubular air bag support upper junction plate 45 is annular connecting plate, and it is along the circumferential direction uniformly arranged several lower spiral shells Bolt tapped through hole, tubular air bag support lower connecting plate 47 is annular connecting plate, and it is along the circumferential direction uniformly arranged several Upper bolt circle through hole, air bag flange in the bottom tie-plate mounting seat 48 is welded on the inside of tubular air bag support pipe 46, is used for pacifying Dress air bag flange in the bottom tie-plate 43;At the close bottom of tubular air bag support pipe 46, it is provided with No. 1 air bag appendix and leads to 49, No. 2 air bag appendixs of via pass through hole 49 and No. 2 by hole 50 and lower directive wheel bearing by hole 51,1 air bag appendix Air bag appendix is symmetricly set on tubular air bag support pipe 46 both sides by hole 50 in 180 degree, and convenient different barreled air bags are total Becoming and install air bag air hose and joint assembly 35 with directive wheel general assembly body, tubular air bag support 33 is not only lifting Air bag assembly 42 provides vertical support, also catenary motion during Lifting air sac inflation venting is played guide effect, overcomes The uneven stability of air bag itself.
Refering to Figure 15 to Figure 16, tubular bladder support upper plate 32 described in the utility model is by tubular bladder support Plate disk 52 and air bag lifting mandrel pilot hole 53 form, the most uniform on tubular bladder support upper plate disk 52 Bolt circle through hole on several is set, relative with the lower bolt thread through hole on tubular air bag support upper junction plate 45 respectively Should, it is also provided with several inside it and No. 1 upper guide pulley bearing 68 and the lower bolt thread of No. 2 upper guide pulley bearings 70 are installed Through hole and No. 1 side force strut angle assembly 36 of installation and the screwed hole of No. 2 side force strut angle assemblies 37, and a confession Power demarcates the round tube hole that counter-force screw rod passes through;Air bag lifting mandrel pilot hole 53 is arranged on tubular bladder support upper plate disk 52 Circle centre position;Tubular bladder support upper plate 32 is arranged on the upper end of tubular air bag support 33.
Refering to Figure 17, air bag top attachment dish 41 is to be lifted mandrel by air bag top attachment dish disk 54 and air bag to install the end Seat 55 composition, air bag top attachment dish disk 54 is along the circumferential direction uniformly arranged bolt manhole on several, and air bag lifts Mandrel mounting seat 55 is a round boss structure, and round boss arranges a circular groove, and inside grooves is along the circumferential direction Arranging lower bolt thread hole, air bag top attachment dish 41 is arranged on the top of Lifting air sac assembly 42.
Refering to Figure 18, tubular air bag support base plate 34 described in the utility model is by tubular air bag support base plate side Shape plate 56 and lower directive wheel bearing mounting seat 57 are welded, and tubular air bag support base plate square plate 56 is provided with several The lower bolt thread hole corresponding with the upper bolt circle through hole on tubular air bag support lower connecting plate 47, props up at tubular air bag Four tapped through holes passed through for foundation bolt it are uniformly arranged at four angles of seat bottom plate square plate 56;Lower directive wheel bearing is installed Seat 57 is the square boss structure welding center at tubular air bag support base plate square plate 56, it is arranged under four installations The lower bolt thread hole of guide wheel shaft bearing 79, at the rear side of lower directive wheel bearing mounting seat 57, is provided with a lower directive wheel Bearing side force carrying bolt mounting seat 58, is used for the phenomenon being moved rearwards by when avoiding lower directive wheel bearing 79 by side force, Thus ensure that lower directive wheel 77 contacts with the lateral column outer surface of U-frame frame 17 all the time.
Refering to Figure 19 and Figure 20, air bag described in the utility model lifting mandrel 40 is to be lifted major axis 59, air bag by air bag Lifting mandrel nylon jacket lower block platform 60 and air bag lifting spindle flanges base 61 form;The upper end of air bag lifting major axis 59 is provided with The screwed hole adjusting plug 31 for installing air bag lifting mandrel lifting travel of certain depth, for the lifting mandrel lifting of locked air bag Traffic control system plug 31, is provided with a screwed hole installing locked bolt, the lifting of air bag in the upper end of air bag lifting major axis 59 After stroke is set by air bag lifting mandrel lifting travel adjustment plug 31 adjustment, i.e. by lateral bolt, air bag is lifted mandrel It is locked that lifting travel adjusts plug 31, prevents it from upper and lower play phenomenon occurring;Air bag lifting spindle flanges base 61 is arranged on air bag In the groove of lifting mandrel mounting seat 55, on it, peripherally disposed several lift in mandrel mounting seat 55 with air bag The round tube hole that lower bolt thread hole is corresponding;In order to control the lifting stroke of Lifting air sac, it is ensured that air bag is in entirely pneumatic state Time anti-force type drum braking platform 1 is just lifted to required height, air bag lifting spindle flanges base 61 upper surface set Put air bag lifting mandrel nylon jacket lower block platform 60, when reaching predetermined lift height, air bag lifting mandrel nylon jacket lower block platform 60 Just touch air bag lifting mandrel pilot hole 53 and the lower surface of air bag lifting mandrel nylon jacket 63.
Refering to Figure 21, it is to be lifted mandrel by air bag that air bag described in the utility model lifting mandrel lifting travel adjusts plug 31 Lifting travel adjusts plug top plug 64 and air bag lifting mandrel lifting travel adjusts plug bolt column 65 and constitutes, air bag lifting mandrel lifting The upper surface of Traffic control system plug top plug 64 is provided with some circular grooves, for the support bulb with cantilever beam weighting transducer Bowl is connected with plastic cement seat;Arrange several on the lateral circumference face of air bag lifting mandrel lifting travel adjustment plug top plug 64 to have The circular hole of certain depth, is used for installing and adjust air bag lifting mandrel lifting travel by instrument and adjusts plug 31, the air bag lifting heart Axle lifting travel adjusts plug 31 and is arranged on air bag lifting mandrel 40 by air bag lifting mandrel lifting travel adjustment plug bolt column 65 Upper end.
Refering to Figure 11 to Figure 21, upper guide pulley assembly 30 is arranged on tubular bladder support upper plate 32 by bolt On, the symmetrical centre face of upper guide pulley assembly 30 overlaps with the symmetrical centre face of tubular air bag support base plate 34, under lead The lower directive wheel bearing mounting seat 57 being arranged on tubular air bag support base plate 34 by bolt to wheel and bearing assembly 44 On, its symmetrical centre face overlaps with the symmetrical centre face of upper guide pulley assembly 30, after the base plate of lower directive wheel and bearing 79 Side is provided with a side force carrying bolt, is used for avoiding in lifting process U-frame frame 17 to lower directive wheel and bearing assembly 44 side forces produced bring it about the phenomenon being moved rearwards by;No. 1 side force strut angle assembly 36 and No. 2 side force strut angles Assembly 37 is arranged on the rear side of tubular bladder support upper plate 32 upper surface, and the two is about tubular air bag support base plate 34 Symmetrical centre face is symmetrical, and No. 1 side force strut angle assembly 36 and No. 2 side force strut angle assemblies 37 are in angular structure, long The arm of angle is arranged on tubular bladder support upper plate 32 upper surface, and the short arm of angle is against tubular bladder support upper plate 32 and tubular gas The rear side of rami capsulares seat upper junction plate 45, is used for avoiding U-frame frame 17 in lifting process to produce upper guide pulley assembly 30 Side force and make tubular bladder support upper plate 32 and tubular air bag support upper junction plate 45 that relative displacement to occur;Lifting air sac Assembly 42 is arranged on air bag flange in the bottom tie-plate 43, and air bag flange in the bottom tie-plate 43 is arranged on tubular air bag support In air bag flange in the bottom tie-plate mounting seat 48 within 33, air bag top attachment dish 41 is arranged on Lifting air sac by bolt and fills Part 42 upper end, the air bag lifting mandrel mounting seat 55 of air bag lifting mandrel 40 is arranged on air bag flange in the bottom by bolt and joins In the groove of flange mounting seat 48, the air bag lifting major axis 59 of air bag lifting mandrel 40 is arranged on tubular bladder support upper plate 32 Air bag lifting mandrel pilot hole 53 internal, air bag lifting mandrel nylon jacket 63, air bag lifting mandrel liter are installed between the two Fall Traffic control system plug 31 adjusts plug bolt column 65 by air bag lifting mandrel lifting travel and is arranged in air bag lifting mandrel 40 Air bag lifting mandrel lifting travel adjusts in plug installing hole 62, uses lateral bolt that air bag lifts mandrel lifting after installing The position locking of Traffic control system plug 31, it is to avoid its upper and lower play;Air bag air hose passes through gas with one end of joint assembly 35 Capsule flange in the bottom tie-plate 43 is arranged on the bottom of Lifting air sac assembly 42, and the other end is by tubular air bag support 33 No. 1 air bag appendix is passed by hole 50 by hole 49 or No. 2 air bag appendixs, then by air hose and air bag lifting control System assembly 6 processed is connected;When air bag lift control system assembly 6 is to Lifting air sac assembly 42 gas transmission, air bag exists Gas replenishment process gradually promote air bag lifting mandrel 40 lift mandrel pilot hole along the air bag of tubular bladder support upper plate 32 53 move upward, then make U-shaped frame assembly fill by No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beam weighting transducers 16 Ligand 12 upward vertical movement, and then realize the lifting campaign of anti-force type drum braking platform 1, when air bag lift control system assembles Body 6 controls Lifting air sac assembly 42 when exitting, it is achieved the dropping motion of anti-force type drum braking platform 1.
Refering to Figure 22 to Figure 24, upper guide pulley assembly 30 described in the utility model include guide pulley 66, on The upper guide pulley of the upper guide pulley bearing conjoined pad 69,2 of the upper guide pulley bearing 68,1 of guide pulley support shaft 67,1 Bearing 70 and No. 2 upper guide pulley bearing conjoined pads 71.No. 1 upper guide pulley bearing 68 and No. 2 upper guide pulley bearings 69 are tied Structure is identical, is all to be mutually perpendicular to by upper guide pulley support shaft Mounting Earrings 72 and upper guide pulley bearing mounting seat 73 It is welded, upper guide pulley bearing mounting seat 73 is provided with along long limit three elongated through holes passed through for bolt;On lead It is by block plate 76 groups on the right side of block plate 75 on the left of upper guide pulley intermediate calender rolls 74, upper guide pulley and upper guide pulley to cylinder 66 Becoming, on the left of upper guide pulley, on the right side of block plate 75 and upper guide pulley, block plate 76 is symmetricly set on guide pulley intermediate calender rolls 74 Two ends, the length of upper guide pulley intermediate calender rolls 74 is identical with the width of the rectangular steel tube column of U-frame frame 17, upper guide pulley Intermediate calender rolls 74 contacts with the outer surface of the rectangular steel tube column of U-frame frame 17, block plate 75 and upper guiding on the left of upper guide pulley On the right side of cylinder, block plate 76 two sides with the rectangular steel tube column of U-frame frame 17 the most respectively contact, and this structure is not merely with upper Guide pulley 66 provides horizontal supporting role to U-frame frame 17, it is also possible to avoid guide pulley 66 in the side of U-frame frame 17 There is longitudinal movement in the outer surface of shape steel pipe post, it is ensured that the steady lifting of anti-force type drum braking platform 1;Upper guide pulley 66 are arranged in guide pulley support shaft 67, and the two rotation centerline overlaps, upper guide pulley 66 lifting process around Upper guide pulley support shaft 67 rotates, and No. 1 upper guide pulley bearing 68 and No. 2 upper guide pulley bearings 70 are by the two Upper guide pulley support shaft Mounting Earrings 72 TBE (threaded both ends) that is symmetrically mounted on guide pulley support shaft 67 axle on, point Not Tong Guo round nut by tight with upper guide pulley support shaft 67 for upper to No. 1 upper guide pulley bearing 68 and No. 2 guide pulley bearings 70 Connect firmly and connect;In order to strengthen the tightness of bolt-connection, guide pulley bearing in guide pulley bearing 68 and No. 2 on No. 1 respectively No. 1 upper guide pulley bearing conjoined pad 69 and No. 2 upper guide pulley bearing conjoined pads 71 it are provided with on 70.
Refering to Figure 25 to Figure 26, lower directive wheel described in the utility model and bearing assembly 44 include lower directive wheel 77, Lower directive wheel support shaft 78, the lower directive wheel bearing conjoined pad 80 of lower guide wheel shaft bearing 79,1 and No. 2 lower directive wheel bearing connection Body pad 81.Lower guide wheel shaft bearing 79 be to be welded by lower guide wheel shaft mounting ear ring seat 82 and lower guide wheel shaft base-plate 83 and Becoming, lower guide wheel shaft mounting ear ring seat 82 is two blocks of folding shape plates, on two pieces of folding shape plate one end and lower guide wheel shaft base-plate 83 Surface is mutually perpendicular to weld together, and the other end is respectively provided with one for the pin-and-hole installing lower directive wheel support shaft 78, two pieces of foldings Shape plate is symmetrically welded on lower guide wheel shaft base-plate 83, uses one piece of rectangular slab to roll over the upper of shape plates by two pieces for improving intensity Surface soldered is together;Lower guide wheel shaft base-plate 83 is a rectangular connecting panels, two blocks of folding shape plates on rectangular connecting panels Outside is respectively provided with two elongated through holes passed through for bolt;Lower directive wheel 77 is arranged in lower directive wheel support shaft 78 the two and turns Being dynamically connected, lower directive wheel support shaft 78 is fixedly mounted in the lower guide wheel shaft mounting ear ring seat 82 of lower guide wheel shaft bearing 79, For strengthening the tightness of bolt-connection, lower guide wheel shaft base-plate 83 is respectively provided with No. 1 lower directive wheel bearing conjuncted Pad 80 and No. 2 lower directive wheel bearing conjoined pads 81.
Refering to Figure 29, air bag lift control system assembly 6 described in the utility model is by air shut-off valve 93, air 94, No. 1 two-position two-way solenoid valve 95 of filter, 96, No. 2 two-position two-way solenoid valves 97 of threeway connecting tube, acoustic filter tubulature 98 Form with acoustic filter 99.When Lifting air sac is inflated, open air shut-off valve 93 and No. 1 two-position two-way solenoid valve 95, air warp Cross after air filter 94 filters through being passed through four air hoses being connected to threeway connecting tube 96 lower end by threeway connecting tube 96 Being transported in four Lifting air sacs, anti-force type drum braking platform 1 lifting is gradually got up by air bag at gas replenishment process;To Lifting air sac During venting, closing air shut-off valve 93 and No. 1 two-position two-way solenoid valve 95, open No. 2 two-position two-way solenoid valves 97, air passes through Acoustic filter 99 is discharged in air via acoustic filter tubulature 98, air bag at deflation course gradually by anti-force type drum braking platform 1 Settle out.
The operation principle of Sedan lifted type air bag lifting brake testing stand:
Before test, when the most tested vehicle does not sails into, Sedan lifted type air bag lifting brake testing stand II is in concrete foundation I In, braking stand upper surface concrete foundation I upper surface of anti-force type drum braking platform 1 keeps concordant;Treat that tested vehicle sails into When normally detecting position of Sedan lifted type air bag lifting brake testing stand II, No. 1 stand air bag lifting device 3 and No. 2 stand air bags Four cantilever beam weighting transducers on lifting device 4 now will detect record in a computer by vehicle axle load;Data are remembered After record, opening the air shut-off valve 93 in air bag lift control system 6, air bag lift control system 6 starts simultaneously to No. 1 stand Respective No. 1 barreled air bag assembly and directive wheel general assembly body in air bag lifting device 3 and No. 2 stand air bag lifting devices 4 13 and No. 2 barreled air bag assemblies are inflated with the Lifting air sac assembly 42 in directive wheel general assembly body 14, and Lifting air sac assembles Body 42 promotes Lifting air sac mandrel 40 to move upward, by four cantilever beam weighting transducer lifting U-frame frame general assembly bodies 12, due to anti-force type drum braking platform 1 strengthen truss welding body 7 by No. 1 platform side and No. 2 platform sides strengthen truss welding bodies 8 with The U-frame frame general assembly body 12 at two ends welds together, and it is total that such anti-force type drum braking platform 1 overlaps upper and lower directive wheel by four The guide effect level become steadily rises, thus compresses tested wheel, and remaining wheel to be measured has the trend departing from ground, when four When Lifting air sac all reaches to be full of gaseity, anti-force type drum braking platform 1 is lifted to require height and maintain this height, remaining Wheel to be measured completely disengages from ground, and the axle load of the most tested axletree increases, and situation when axle load loads of can simulating loads Braking forces measuring, axle when loading is surveyed to measure out and is recorded in computer, starts afterwards by four cantilever beam weighting transducers Measuring this axle brake force at stress state, the brake force record of mensuration, in computer, calculates loading by computer Time braking ability the most up to standard.
After the first tested vechicle shaft detection terminates, air bag lift control system 6 starts to exit air bag, until counter-force Formula rolls upper end and I flush on concrete foundation of brake platform 1, and now vehicle continues to move forward so that follow-up tested Axletree is constantly in and detects position normally, similar above-mentioned detection process, is examined by the braking ability of the loaded condition of each axletree Measure.
Sedan lifted type air bag lifting brake testing stand described in the utility model, needs to weigh four cantilever beams before use Sensor is demarcated, and to guarantee that Sedan lifted type air bag lifting brake testing stand carries out loading the accuracy of detection of braking performance test, and shows With the presence of transducer calibration equipment structure complicated, operate the problems such as inconvenient and relatively costly, and be not specially adapted for Sedan lifted type air bag lifting brake testing stand described in the utility model, it is impossible to be well matched with Sedan lifted type described in the utility model The construction features of air bag lifting brake testing stand, therefore, this utility model provides a kind of for lifting brake testing stand simultaneously Sensor calibration system.
Refering to Figure 27 to Figure 28, sensor calibration system 5 described in the utility model includes that No. 1 power demarcates counter-force screw rod 84, No. 2 power demarcate counter-force screw rod 85, gauge load measuring instrument 86, sensor calibration system square tube beam 87, metering institute sensor 88 and hydraulic jack 89.Sensor calibration system square tube beam 87 is by two different lengths but the identical sensor mark of thickness Determining system square tube entablature 90 and sensor calibration system square tube sill 91 is welded, No. 1 power demarcates counter-force screw rod 84 and 2 Number power is demarcated counter-force screw rod 85 and is symmetrically mounted in the two ends tapped through hole of sensor calibration system square tube sill 91, the two Symmetrical centre face all overlaps with the symmetrical centre face of sensor calibration system square tube beam 87, and No. 1 power demarcates counter-force screw rod 84 and 2 Number power is demarcated counter-force screw rod 85 and is adjusted the height of sensor calibration system square tube beam 87 respectively by upper and lower two nuts;Meter Amount institute sensor 88 is fixedly mounted on the bottom face center position of sensor calibration system square tube sill 91, hydraulic jack The upper end of 89 contacts connection, the rotation centerline of hydraulic jack 89 and the rotation measuring institute's sensor 88 with measuring institute's sensor 88 Turn centrage to overlap and all (this symmetrical centre face and vehicle traveling side on the symmetrical centre face of U-frame frame general assembly body 12 To vertical);Gauge load measuring instrument 86 is fixedly mounted on the upper surface center of sensor calibration system square tube entablature 90 Place.
The operation principle of sensor calibration system 5:
Sensor calibration system 5, at timing signal, is two cantilever beams being respectively directed on No. 1 stand air bag lifting device 3 Two cantilever beam weighting transducers on LOAD CELLS and No. 2 stand air bag lifting devices 4 carry out demarcating simultaneously.Demarcate 1 When No. 1 cantilever beam weighting transducer 15 on number stand air bag lifting device 3 and No. 2 cantilever beam weighting transducers 16, sensor No. 1 power of calibration system 5 demarcates counter-force screw rod 84 and No. 2 power are demarcated counter-force screw rod 85 and are separately mounted to No. 1 barreled air bag assembly With directive wheel general assembly body 13 and No. 2 barreled air bag assemblies with on the tubular bladder support in directive wheel general assembly body 14 Relevant position on plate 32, during installation, demarcates counter-force screw rod 85 times by adjusting No. 1 power demarcation counter-force screw rod 84 and No. 2 power respectively The nut of end, it is ensured that the rotation centerline of the rotation centerline of hydraulic jack 89 and metering institute sensor 88 overlaps and all exists On the symmetrical centre face along vehicle heading of No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beam weighting transducers 16, this Plant arrangement to produce without additional moment, it is possible to ensure two cantilever beam weighing and sensings on No. 2 stand air bag lifting devices 4 Device does not interferes with the demarcation of two cantilever beam weighting transducers on No. 1 stand air bag lifting device 3;It is pressed downward against hydraulic jack The depression bar of 89, hydraulic jack 89 applies power vertically upward to metering institute sensor 88, can by gauge load measuring instrument 86 To read the size of the power applied, the power that hydraulic jack 89 is applied demarcates counter-force screw rod 84 and No. 2 power marks by No. 1 power Determine counter-force screw rod 85 and pass to No. 1 barreled air bag assembly and directive wheel general assembly body 13 and No. 2 barreled air bag assemblies and directive wheel On general assembly body 14, No. 1 cantilever beam weighting transducer 15 and No. 2 cantilever beam weighting transducers 16 are made to be sensed by with metering institute The active force vertically downward of device 88 formed objects, thus can be by the reading on gauge load measuring instrument 86 to No. 1 cantilever Beam load cell 15 and No. 2 cantilever beam weighting transducers 16 are demarcated.
Demarcate No. 1 cantilever beam weighting transducer 15 on No. 2 stand air bag lifting devices 4 and No. 2 cantilever beam weighing and sensings During device 16, similar above-mentioned calibration process.
Above are only detailed description of the invention of the present utility model, but design concept of the present utility model be not limited thereto, All changes utilizing this design that this utility model carries out unsubstantiality, all should belong to the behavior of this utility model protection domain.

Claims (10)

1. a Sedan lifted type air bag lifting brake testing stand, is strengthened truss and U-frame by anti-force rolling brake testing platform, platform side Frame assembly welding body, stand air bag lifting device, sensor calibration system and air bag lift control system composition, its feature exists In:
Described stand air bag lifting device is made up of 1, No. 2 stand air bag lifting devices (3,4), and its structure is identical to be symmetrically mounted on At four angles at existing anti-force rolling brake testing platform (1) two ends, and it is arranged on concrete foundation I by foundation bolt On, described 1, No. 2 stand air bag lifting devices (3,4) by 1, No. 2 barreled air bag assemblies and directive wheel general assembly body (13, 14) composition;Described side reinforcement truss welds body (2) and is fixed on anti-force rolling brake testing platform (1) with U-shaped frame assembly The both sides of brake platform framework and base, be used for strengthening the bearing strength of anti-force rolling brake testing platform (1);Described four set barreleds Air bag assembly overlaps U-frame frame general assembly body by anti-force type cylinder system with directive wheel general assembly body (13,14) by lifting two Dynamic test platform (1) is lifted to certain altitude;Described sensor calibration system (5) is arranged on 1, No. 2 before testing stand formally uses On stand air bag lifting device (3,4), biography of respectively 1, No. 2 cantilever beams in 1, No. 2 stand air bag lifting devices (3,4) being weighed Sensor (15,16) is demarcated, to guarantee the accuracy of detection of testing stand;Described air bag lift control system (6) is arranged on test Platform one end, by controlling the inflatable and deflatable lifting controlling anti-force rolling brake testing platform (1) and the landing of air bag.
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 1, it is characterised in that:
Described platform side is strengthened truss and is welded body (2) with U-shaped frame assembly by 1, No. 2 platform sides reinforcement truss welding body (7,8), platforms Side strengthens truss horizontal-associate channel-section steel (9) and 1, No. 2 U-frame framves form with Lifting air sac assembly (10,11), described 1, No. 2 platform sides Strengthen truss welding body (7,8) structure identical, hung down by a long channel-section steel of longitudinal direction and a long square steel tube of longitudinal direction and some Being welded to short channel-section steel, two long square steel tubes of longitudinal direction are strengthened truss horizontal-associate channel-section steel (9) by platform side and are welded together, steel pipe two ends It is welded on the U-frame frame (17) in 1, No. 2 U-frame framves and Lifting air sac assembly (10,11).
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 1, it is characterised in that:
Described 1, No. 2 barreled air bag assemblies are identical with directive wheel general assembly body (13,14) structure, and the two is respectively by 1, No. 2 Cantilever beam weighting transducer (15,16) is symmetricly set at the left and right sides U-shaped mouth of U-frame frame (17), and all total with U-frame frame Assembly (12) is become to overlap along the symmetrical centre face of vehicle heading;Described 1, No. 2 cantilever beam weighting transducers (15,16) are led to Cross sensor support bulb bowl plastic cement seat to be arranged on air bag lifting mandrel lifting travel adjustment plug (31);
Upper guide pulley assembly (30) in described 1, No. 2 barreled air bag assemblies and directive wheel general assembly body (13,14) and Lower directive wheel and bearing assembly (44), all with the lateral surface of the square steel tube of U-frame frame (17) both sides as guide rail, roll anti-force type Cylinder brake platform (1) elevating movement play guide support effect.
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 3, it is characterised in that:
Described 1, No. 2 barreled air bag assemblies and directive wheel general assembly body (13,14), mainly by upper guide pulley assembly (30), air bag lifting mandrel lifting travel adjusts plug (31), air bag air hose and joint assembly (35), 1, No. 2 side forces Strut angle assembly (36,37), Lifting air sac assembly (42) and lower directive wheel and bearing assembly (44) form, described on lead Being fixed on tubular bladder support upper plate (32) to cylinder assembly (30), the two symmetrical centre face overlaps, described lower guiding On lower directive wheel bearing mounting seat (57) that wheel and bearing assembly (44) are fixed on tubular air bag support base plate (34), its Symmetrical centre face overlaps with the symmetrical centre face of upper guide pulley assembly (30), described 1, No. 2 side force strut angle assemblies (36,37) are arranged on the rear side of tubular bladder support upper plate (32) upper surface, and described Lifting air sac assembly (42) is arranged on Between air bag top attachment dish (41) and air bag flange in the bottom tie-plate (43), described air bag flange in the bottom tie-plate (43) is installed On air bag flange in the bottom tie-plate mounting seat (48) that tubular air bag support (33) is internal, described air bag air hose with connect One end of head assembly (35) is arranged on the bottom of Lifting air sac assembly (42) by air bag flange in the bottom tie-plate (43), separately One end is passed by hole by the air bag appendix on tubular air bag support (33), then by air hose and air bag lifting control System assembly (6) processed is connected.
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 3, it is characterised in that:
Described U-frame frame general assembly body (12) is made up of support crossbeam (18) on U-frame frame (17) and U-frame frame, the two By bolt-connection together, U-frame frame (17) is U-shaped structural framing, described U-frame frame supports crossbeam (18) by U-frame Support crossbeam square tube (24) on frame, entablature is welded with U-frame frame left and right side connecting plate (28,29).
6. according to a kind of Sedan lifted type air bag lifting brake testing stand described in claim 3 or 4, it is characterised in that:
Described upper guide pulley assembly (30) is by upper guide pulley (66) the upper guide pulley bearing group identical with two structures Becoming, described upper guide pulley (66) is by upper guide pulley intermediate calender rolls (74) and upper guide pulley left and right side block plate (75,76) group Becoming, the length of described upper guide pulley intermediate calender rolls (74) is identical with the width of the rectangular steel tube column of U-frame frame (17), described Upper guide pulley (66) moves with the touch with the outer surface rolling of the rectangular steel tube column of U-frame frame (17), upper guide pulley (66) Being arranged in guide pulley support shaft (67), the rotation centerline of the two overlaps;
Described lower directive wheel and bearing assembly (44) are by lower directive wheel (77), lower directive wheel support shaft (78), lower directive wheel Shaft stool (79) and lower directive wheel bearing conjoined pad composition, described lower directive wheel (77) is installed by lower directive wheel support shaft (78) In two lower guide wheel shaft mounting ear ring seats of lower guide wheel shaft bearing (79).
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 4, it is characterised in that:
Described tubular air bag support (33) is a barrel-like structure, tubular air bag support pipe (46), tubular air bag prop up Seat upper junction plate (45), tubular air bag support lower connecting plate (47) and air bag flange in the bottom tie-plate mounting seat (48) weld and Becoming, the described upper and lower connecting plate of tubular air bag support (45,47) is annular connecting plate, it is along the circumferential direction uniformly arranged Several lower bolt thread through holes, air bag flange in the bottom tie-plate mounting seat (48) is welded on tubular air bag support pipe (46) Inside, is used for installing air bag flange in the bottom tie-plate (43);At tubular air bag support pipe (46) at the bottom, be provided with 1, No. 2 air bag appendixs by hole (49,50) and lower directive wheel bearing by hole (51), 1, No. 2 air bag appendixs pass through hole (49, 50) it is symmetricly set on tubular air bag support pipe (46) both sides, convenient different barreled air bag assemblies and directive wheel assembly in 180 degree Assembly installs air bag air hose and joint assembly (35), and tubular air bag support (33) is not only Lifting air sac assembly (42) provide vertical support, also catenary motion during Lifting air sac inflation venting is played guide effect, overcome air bag itself Uneven stability.
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 4, it is characterised in that:
Described tubular bladder support upper plate (32) is lifted mandrel by tubular bladder support upper plate disk (52) and air bag and leads Form to hole (53);Described air bag top attachment dish (41) is lifted mandrel by air bag top attachment dish disk (54) and air bag and installs Base (55) forms;Described tubular air bag support base plate (34) by tubular air bag support base plate square plate (56) and under lead It is welded to wheeling support mounting seat (57);Described air bag lifting mandrel (40) is lifted major axis (59), air bag lifting by air bag Mandrel nylon jacket lower block platform (60) and air bag lifting spindle flanges base (61) composition.
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 1, it is characterised in that:
Described air bag lift control system assembly (6) by air shut-off valve (93), air filter (94), No. 1 two two Three-way electromagnetic valve (95), threeway connecting tube (96), No. 2 two-position two-way solenoid valves (97), acoustic filter tubulature (98) and acoustic filter (99) composition, when inflating Lifting air sac, opens air shut-off valve (93) and No. 1 two-position two-way solenoid valve (95), and air passes through After air filter (94) filters, four air hoses through threeway connecting tube (96) lower end are transported in four Lifting air sacs, Air bag intake process is gradually by anti-force type drum braking platform (1) lifting;When Lifting air sac is exitted, close air shut-off valve (93) With No. 1 two-position two-way solenoid valve (95), opening No. 2 two-position two-way solenoid valves (97), air passes through acoustic filter (99) via noise elimination Device tubulature (98) are discharged in air, and anti-force type drum braking platform (1) is gradually fallen by air bag at deflation course.
A kind of Sedan lifted type air bag lifting brake testing stand the most according to claim 1, it is characterised in that:
Described sensor calibration system (5) is demarcated counter-force screw rod (84) by No. 1 power, No. 2 power demarcate counter-force screw rod (85), standard Load measurement instrument (86), sensor calibration system square tube beam (87), metering institute's sensor (88) and hydraulic jack (89) group Becoming, described sensor calibration system square tube beam (87) is by two different lengths but the identical sensor calibration system side of thickness Pipe entablature (90) and sensor calibration system square tube sill (91) are welded, and 1, No. 2 described power demarcate counter-force screw rod (84,85) are respectively symmetrically the two ends being vertically mounted on sensor calibration system square tube sill (91), the symmetrical centre face of the two All symmetrical centre faces with sensor calibration system square tube beam (87) overlap;Described metering institute sensor (88) fixed installation In the bottom face center position of sensor calibration system square tube sill (91), the upper end of hydraulic jack (89) and metering institute Sensor (88) contact connects, and the rotation centerline of the two overlaps and all in the symmetrical centre of U-frame frame general assembly body (12) On face, i.e. this symmetrical centre face is vertical with vehicle heading;Gauge load measuring instrument (86) is fixedly mounted on transducer calibration The upper surface center position of system square tube entablature (90).
CN201620503894.0U 2016-05-30 2016-05-30 Sedan lifted type air bag lifting brake testing stand Withdrawn - After Issue CN205691344U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620503894.0U CN205691344U (en) 2016-05-30 2016-05-30 Sedan lifted type air bag lifting brake testing stand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620503894.0U CN205691344U (en) 2016-05-30 2016-05-30 Sedan lifted type air bag lifting brake testing stand

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106092599A (en) * 2016-05-30 2016-11-09 长春速建新技术开发有限公司 Sedan lifted type air bag lifting brake testing stand
CN108519238A (en) * 2018-03-20 2018-09-11 张玉国 Floating ball type guiding thrust device and automobile loading brake platform

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106092599A (en) * 2016-05-30 2016-11-09 长春速建新技术开发有限公司 Sedan lifted type air bag lifting brake testing stand
CN106092599B (en) * 2016-05-30 2019-07-30 长春速建新技术开发有限公司 Sedan lifted type air bag lifting brake testing stand
CN108519238A (en) * 2018-03-20 2018-09-11 张玉国 Floating ball type guiding thrust device and automobile loading brake platform
CN108519238B (en) * 2018-03-20 2020-04-28 张玉国 Floating ball type guiding thrust device and automobile loading brake platform

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Granted publication date: 20161116

Effective date of abandoning: 20190730