CN201697740U - Device for measuring braking force of low-speed and high-torque engineering vehicle - Google Patents
Device for measuring braking force of low-speed and high-torque engineering vehicle Download PDFInfo
- Publication number
- CN201697740U CN201697740U CN2010202315709U CN201020231570U CN201697740U CN 201697740 U CN201697740 U CN 201697740U CN 2010202315709 U CN2010202315709 U CN 2010202315709U CN 201020231570 U CN201020231570 U CN 201020231570U CN 201697740 U CN201697740 U CN 201697740U
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- braking force
- speed
- drive roll
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- speed reduction
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Abstract
The utility model relates to a device for measuring braking force of a low-speed and high-torque engineering vehicle, which comprises two parallel measuring table units, a control system and a measurement indicating instrument electrically connected with the control system, wherein the two measuring table units are connected into a whole by a middle cover plate therebetween, a notch is arranged at the front end of each measuring table unit, a tension bar is arranged on the notch, and each measuring table unit comprises a rack, a motor, a speed reducer, an S type force transducer arranged between the speed reducer and the rack, a force measuring rod, a driving roller and a driven roller which are arranged on the rack, a third roller arranged between the driving roller and the driven roller, and a lifting jack arranged below the space between the driving roller and the driven roller. The device for measuring braking force of the low-speed and high-torque engineering vehicle can detect the braking force intuitionally and conveniently, can truthfully reflect the dynamic braking performance of the vehicle during practical traveling, and simultaneously can detect the braking force more rapidly, accurately, economically and safely without limit of outside conditions; and the repeatability is better.
Description
Technical field
The utility model relates to the car brakeing force measuring device, relates in particular to a kind of low-speed big engineering truck braking force measuring apparatus at engineering truck damping force.
Background technology
The braking direct relation traffic safety, only just can give full play to other usabilities of automobile under the prerequisite that has guaranteed traffic safety, so detection is necessary to vehicle braked.And the equipment that is used for the car brakeing detection on the present market is few, mainly is to adopt the road examination to measure.The road examination needs the cement or the bituminous pavement of smooth, dry and cleaning when measuring, attachment coefficient between tire and the road surface is not less than 0.7, wind speed is not more than 5m/s, and the insensitivity of stipulating in the standard of need drawing on Surface of Trial Pavement requires the sideline of respective width proving road.Tested vehicle travels to the initial velocity that is higher than regulation along the center line of test track, puts variator in neutral gear, suddenly steps on braking when sliding into the initial velocity of regulation, makes vehicle immobilization.With velograph, fifth wheel instrument or with the braking distance of other method of testing measuring vehicle; With velograph, decelometer or the average retardation rate and the brake coordination time of fully sending with the additive method measuring vehicle.
But this method of testing can only reflect the quality of braking performance of vehicle, and,, be difficult for obtaining quantitative numerical value though can make qualitative analysis from dragging, impressing for the braking situation of each wheel and the distribution of damping force, and be difficult for the position that tracing trouble takes place, repeatability is relatively poor.The size of braking distance and braking deceleration, often different because of the situation and the road traffic condition on driver's method of operating, road surface.Only under the situation of the special-purpose test apparatus in test road, could obtain repeatability assay preferably.Except that road conditions, road examination also will be subjected to the restriction of weather conditions etc., and the danger that has an accident is arranged.Consume fuel, the wearing and tearing tire, the shock load during brake hard all has harmful effect to each parts of automobile.
The utility model content
The purpose of this utility model provides a kind of low-speed big engineering truck braking force measuring apparatus, and it is more accurate to detect effect, and more economical, safe and reliable.
For achieving the above object, the utility model provides a kind of low-speed big engineering truck braking force measuring apparatus, comprise two test desk unit that be arranged in parallel, control system and the measurement indicating instrument that electrically connects with control system, two test desk unit connect one by a cover plate that is provided with therebetween, test desk unit front end is provided with a fluting, which is provided with a stayed mast; Each test desk unit comprises: frame, motor, speed reduction unit, be located at S type force cell, dynamometer link between speed reduction unit and the frame, be located at drive roll, driven cylinder on the frame, be located at the 3rd cylinder between drive roll and the driven cylinder and be located at drive roll and driven cylinder between the lifting jack of below.Described drive roll and driven cylinder are installed on the frame by the ball bearing of usheing to seat at its two ends respectively, and drive roll is connected by chain drive with driven cylinder; Frame one end that described motor and speed reduction unit are located at, its top is provided with cover plate on one side, and motor directly links to each other with speed reduction unit by its flange, and the output sleeve of speed reduction unit is contained on the axle head of drive roll.
Described S type force cell is connected on dynamometer link one end, and the other end of the relative S type of dynamometer link force cell is connected with the housing of speed reduction unit.
Described stayed mast is provided with pulling force sensor away from an end of test desk unit, is inserted with a rod on the other end relatively.
The beneficial effects of the utility model are: low-speed big engineering truck braking force measuring apparatus of the present utility model, it is a kind of bench type test damping force device, it is satisfying the detection of car brakeing power intuitively, easy, when can truly reflect the braking ability of Automobile Dynamic in the automobile actual travel process, check rapider, accurately, economical, safety, and be not subjected to the restriction of external condition, repeatability better, can quantitatively record the braking overall process of each wheel, help analyzing the distribution of antero posterior axis damping force and the equilibrium state of every axle braking force, parameters such as brake coordination time provide reliable basis to fault diagnosis.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effects apparent by embodiment of the present utility model is described in detail.
In the accompanying drawing,
Fig. 1 is the front elevation of the utility model low-speed big engineering truck braking force measuring apparatus;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is a stayed mast structural representation in the utility model;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is single shaft anti-force type braking test desk schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
Shown in Fig. 1-4, low-speed big engineering truck braking force measuring apparatus of the present utility model, it is a kind of bench type test damping force device, it comprises that two identical test desk unit, control system 9 of structure reach the measurement indicating instrument that electrically connects with control system, two test desk unit be arranged in parallel, can detect the left and right vehicle wheel wheel respectively, two test desk unit link into an integrated entity by a cover plate 11; Each test desk unit comprises: frame 10, motor 1, speed reduction unit 2, S type force cell 3, dynamometer link 4, be located at the drive roll 5 on the frame 10, driven cylinder 6, the 3rd cylinder 7, lifting jack 8.The end that described motor 1 and speed reduction unit 2 are located at, top are provided with cover plate 12 on one side, can cover motor 1 and speed reduction unit 2.Motor 1, speed reduction unit 2 electrically connect with control system 9, and control system is connected with power supply by lead, and the circuit structure of control system and the circuit between said elements connect can pass through existing techniques in realizing.
Described drive roll 5 is installed on the frame 10 by the ball bearing 13 of usheing to seat at its two ends respectively with driven cylinder 6, and driven cylinder 6 links together by chain drive 14 with drive roll 5, motor 1 directly links to each other with speed reduction unit 2 by its flange, speed reduction unit 2 is located at an end of drive roll 5, its output sleeve is contained on the axle head of drive roll 5, and having constituted motor 1 and speed reduction unit 2 like this can be around the suspension driving-chain of drive roll 5 axis rotation.Described S type force cell 3 is located between speed reduction unit 2 and the frame and is connected on dynamometer link 4 one ends, and the other end of dynamometer link 4 relative S type force cells 3 is connected with the housing of speed reduction unit 2.
Working direction during according to vehicle detection, drive roll 5 can be divided into back roll and front roll with driven cylinder 6, wherein back roll (drive roll 5) is provided with a little more than front roll (driven cylinder 6), just usually said height cylinder, the suitable angle of setting that causes after reduce because of two centre of the drum that remedied reduces, and the negative effect that the detection maximum braking force is brought.Can make the testing process smoothness like this, not lose time, improve detection speed.Also strengthen resistance simultaneously, prevented that fork truck from the time running out of cylinder in braking, had influence on the detection quality of fork truck.
Described the 3rd cylinder 7 is located between drive roll 5 and the driven cylinder 6, the butcher cuts of wheel when being used to prevent to measure.For making convenient the sailing into reposefully of vehicle roll brake platform away from, lifting jack 8 is located at below between drive roll 5 and the driven cylinder 6.
Be the fully loaded device of special model engineering vehicle, described test desk unit front end also is provided with a stayed mast 15, and this test desk unit correspondence is established a fluting (not indicating), and stayed mast 15 is located on the fluting.Described stayed mast 15 is provided with pulling force sensor (not indicating) away from an end of test desk unit, be inserted with a rod (not indicating) relatively on the other end, be used for applying a fixation power, make pulling force sensor be subjected to the effect that the vehicle pulling force also can be subjected to power simultaneously at stayed mast to stayed mast 15.The output pulse signal of pulling force sensor is directly proportional with the pulling force size that stayed mast 15 is subjected to.When this setting also can prevent car brakeing, the unexpected locking of wheel, vehicle is because the former thereby measurement mechanism that flies out of inertia.
With reference to figure 1-5, when carrying out the wheel braking force detection, tested vehicle reaches test desk, wheel places on drive roll 5 and the driven cylinder 6, put down lifting jack 8, with being connected with engineering truck that hook 150 people of stayed mast 15 are, the driver promotes the fully loaded of pallet fork simulating vehicle.Motor 1 energising is rotated through speed reduction unit 2 decelerations increase moment of torsion rear drive drive roll 5 and is rotated with driven cylinder 6, because tested wheel tyre cylindrical and two cylinder outer round surface are tangent, this moment, wheel also rotated with the identical linear velocity of cylinder under the effect of friction force, and the torque of being rotated by motor 1 drive wheels claims driving torque.Treat that the stable back of vehicle wheel rotational speed driver steps on brake pedal, the wheel rotation that under the moment of friction effect of wheel drag, reduces speed now.The cylinder that this moment, motor 1 drove, is kept wheel and is continued rotation to overcome brake frictional torque the tangential direction effect damping force of wheel tyre periphery.Simultaneously, wheel tyre is to the additional reacting force opposite and equivalent with damping force of the tangential direction of cylinder surface, under this moment of reaction effect, the reverse direction swing that speed reduction unit 2 housings rotate towards cylinder with dynamometer link 4, the power of dynamometer link 4 one ends converts the electric signal that is in proportion with damping force to through S type force cell 3, this signal is handled through control system, shows its quantized value, can show by measuring indicating instrument 92.
Vehicle is not when braking, and drive roll 5 is identical with the linear velocity of driven cylinder 6 surperficial linear velocities of rotating and tested wheel tyre cylindrical, can not cause tire wear.When tested wheel braking, especially when wheel lock up, linear velocity is inequality will to cause tire wear.Therefore, the 3rd cylinder of between drive roll 5 and driven cylinder 6, installing 7, but rotation can swing up and down again, make it remain on the extreme higher position by the spring of being located under it at ordinary times.When detecting, depress the 3rd cylinder 7 when the wheel of tested vehicle places on drive roll 5 and the driven cylinder 6, and reliably contact with its maintenance, when detecting, drive with the identical linear velocity rotation of tire by tire.In the braking procedure; if producing, the relative cylinder of tire slides; linear velocity will reduce; the sensor that is assemblied in the 3rd cylinder 7 axle heads reduces signal with speed and transfers to control system; linear velocity when the relative cylinder of linear velocity of tire; send the instruction auto stop when slip reaches 70-90%, avoid tire wear.
In sum, low-speed big engineering truck braking force measuring apparatus of the present utility model, it is a kind of bench type test damping force device, it is satisfying the detection of car brakeing power intuitively, easy, when can truly reflect the braking ability of Automobile Dynamic in the automobile actual travel process, check rapider, accurately, economical, safety, and be not subjected to the restriction of external condition, repeatability better, can quantitatively record the braking overall process of each wheel, help analyzing the distribution of antero posterior axis damping force and the equilibrium state of every axle braking force, parameters such as brake coordination time provide reliable basis to fault diagnosis.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection domain of the utility model accompanying Claim.
Claims (4)
1. low-speed big engineering truck braking force measuring apparatus, it is characterized in that, comprise two test desk unit that be arranged in parallel, control system and the measurement indicating instrument that electrically connects with control system, two test desk unit connect one by a cover plate that is provided with therebetween, test desk unit front end is provided with a fluting, which is provided with a stayed mast; Each test desk unit comprises: frame, motor, speed reduction unit, be located at S type force cell, dynamometer link between speed reduction unit and the frame, be located at drive roll, driven cylinder on the frame, be located at the 3rd cylinder between drive roll and the driven cylinder and be located at drive roll and driven cylinder between the lifting jack of below.
2. low-speed big engineering truck braking force measuring apparatus according to claim 1, it is characterized in that, described drive roll and driven cylinder are installed on the frame by the ball bearing of usheing to seat at its two ends respectively, and drive roll is connected by chain drive with driven cylinder; Frame one end that described motor and speed reduction unit are located at, its top is provided with cover plate on one side, and motor directly links to each other with speed reduction unit by its flange, and the output sleeve of speed reduction unit is contained on the axle head of drive roll.
3. low-speed big engineering truck braking force measuring apparatus according to claim 1 is characterized in that, described S type force cell is connected on dynamometer link one end, and the other end of the relative S type of dynamometer link force cell is connected with the housing of speed reduction unit.
4. low-speed big engineering truck braking force measuring apparatus according to claim 1 is characterized in that described stayed mast is provided with pulling force sensor away from an end of test desk unit, is inserted with a rod on the other end relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202315709U CN201697740U (en) | 2010-06-21 | 2010-06-21 | Device for measuring braking force of low-speed and high-torque engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202315709U CN201697740U (en) | 2010-06-21 | 2010-06-21 | Device for measuring braking force of low-speed and high-torque engineering vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697740U true CN201697740U (en) | 2011-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202315709U Expired - Lifetime CN201697740U (en) | 2010-06-21 | 2010-06-21 | Device for measuring braking force of low-speed and high-torque engineering vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697740U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901636A (en) * | 2012-09-24 | 2013-01-30 | 中国人民解放军总后勤部军事交通运输研究所 | Single-shaft counter-force type double-rotary-drum detecting and testing platform of inertia braking system of trailer |
| CN103063348A (en) * | 2012-12-30 | 2013-04-24 | 徐州苏煤矿山设备制造有限公司 | Testing device of traction force and braking force of track locomotive |
| CN104792548A (en) * | 2015-04-30 | 2015-07-22 | 陕西理工学院 | Three-drum detection device used for simulating straight pavements with different attachment coefficients |
| CN106644518A (en) * | 2017-01-05 | 2017-05-10 | 贵州中航交通科技有限公司 | Automotive loading brake inspection table |
-
2010
- 2010-06-21 CN CN2010202315709U patent/CN201697740U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901636A (en) * | 2012-09-24 | 2013-01-30 | 中国人民解放军总后勤部军事交通运输研究所 | Single-shaft counter-force type double-rotary-drum detecting and testing platform of inertia braking system of trailer |
| CN103063348A (en) * | 2012-12-30 | 2013-04-24 | 徐州苏煤矿山设备制造有限公司 | Testing device of traction force and braking force of track locomotive |
| CN103063348B (en) * | 2012-12-30 | 2015-11-04 | 徐州苏煤矿山设备制造有限公司 | A kind of track hauling capacity of a locomotive and braking force test device |
| CN104792548A (en) * | 2015-04-30 | 2015-07-22 | 陕西理工学院 | Three-drum detection device used for simulating straight pavements with different attachment coefficients |
| CN104792548B (en) * | 2015-04-30 | 2017-12-29 | 陕西理工学院 | A kind of three rotary drum detection means for being used to simulate the different straight road surfaces of attachment coefficient |
| CN106644518A (en) * | 2017-01-05 | 2017-05-10 | 贵州中航交通科技有限公司 | Automotive loading brake inspection table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN ANCHE DETECTION CO., LTD. Free format text: FORMER NAME: SHENZHEN ANCHE DETECTION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Building No. 188 Shennan Road, Nanshan District Grand View of Shenzhen city in Guangdong province 518000 14 floor Patentee after: Shenzhen Anche Inspection Co., Ltd. Address before: Building No. 188 Shennan Road, Nanshan District Grand View of Shenzhen city in Guangdong province 518000 14 floor Patentee before: Shenzhen Anche Enterprise Technology Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 T3 factory building, Nanshan District hi tech Industrial Village, Guangdong, Shenzhen, T3b5-b02 Patentee after: Shenzhen Anche Inspection Co., Ltd. Address before: Building No. 188 Shennan Road, Nanshan District Grand View of Shenzhen city in Guangdong province 518000 14 floor Patentee before: Shenzhen Anche Inspection Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000, room 4, building 901, Shenzhen Software Park, two road, Nanshan District science and technology, Guangdong, Shenzhen, China Patentee after: Shenzhen Anche Inspection Co., Ltd. Address before: 518000 T3 factory building, Nanshan District hi tech Industrial Village, Guangdong, Shenzhen, T3b5-b02 Patentee before: Shenzhen Anche Inspection Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110105 |
|
| CX01 | Expiry of patent term |