CN203758672U - Novel automobile drum type brake heat-machine performance test device - Google Patents
Novel automobile drum type brake heat-machine performance test device Download PDFInfo
- Publication number
- CN203758672U CN203758672U CN201420082122.5U CN201420082122U CN203758672U CN 203758672 U CN203758672 U CN 203758672U CN 201420082122 U CN201420082122 U CN 201420082122U CN 203758672 U CN203758672 U CN 203758672U
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- brake
- machine performance
- semiaxis
- testing device
- performance testing
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Abstract
The utility model discloses a novel automobile drum type brake heat-machine performance test device comprising a single-wheel test module and a power output module, wherein the single-wheel test module mainly consists of a brake device and a wheel hub, and a power output end of the power output module is connected with the wheel hub through a half shaft. The brake device comprises a brake base plate, an actuating wheel cylinder and a brake drum, wherein the brake base plate is provided with a non-contact infrared temperature sensor, and a torque and rotation speed sensor is arranged on the half shaft through two shaft coupling devices. According to the novel automobile drum type brake heat-machine performance test device, the brake base plate is provided with the non-contact infrared temperature sensor, convenience of installation is realized, and temperature of the inner surface of the brake drum can be measured when the brake drum is rotating at high speed; with the rotation of the brake drum, temperature of different positions of the inner surface of the brake drum can be effectively measured, and high sampling precision is realized; based on the principleof many-body dynamics, the torque and rotation speed sensor is arranged on the half shaft, and braking torque can be precisely measured without any chassis dynamometer; the novel automobile drum type brake heat-machine performance test device is advantaged by compact structure and low cost.
Description
Technical field
The utility model relates to a kind of new automobile drum brake heat-machine performance testing device.
Background technology
In Motor Vehicle Braking Procedure, the outside surface of the Brake shoe lining assembly of drum brake and brake drum inside surface are all subject to the effect of friction force, simultaneously also must be with the temperature phenomenon that raises, its stress state shows as existing mechanical stress again thermal stress, i.e. the heat of indication-machine coupling conventionally.
The theoretical analysis of brake heat-machine coupling generally completes based on dynamics and thermodynamics and numerical solution software (as ANSYS etc.), and self-evident, how the degree of agreement of theoretical analysis and engineering reality must be verified by experimental provision.
The patent No. is that the utility model patent of CN200620098353.0 discloses " a kind of temperature-detecting device of motor vehicle drum brake ", in this device, contact type temperature sensor is arranged between the brake-shoe and friction disc of drum brake, this device can not be measured temperature in brake drum, temperature that only can testing friction plate inner surface single-point position, and work under bad environment, measuring accuracy is low.
On the other hand, at present the braking moment of measured automobiles drum brake is generally by drum dynamometer, and is equipped with dynamometer machine and just can completes test, causes cost high.
Utility model content
The utility model provides a kind of new automobile drum brake heat-machine performance testing device, and object is that the temperature rise data in braking procedure are measured to detent.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of new automobile drum brake heat-machine performance testing device, comprise the single-wheel test module and the power take-off module that are mainly formed by detent and wheel hub, the clutch end of power take-off module is connected with wheel hub by semiaxis, detent comprises back-plate, actuates wheel cylinder and brake drum, and described back-plate is provided with non-contact infrared temperature sensor.
The inner side of described back-plate is provided with the sensor stand for described non-contact infrared temperature sensor is installed.
Described in being positioned at, described sensor stand actuates wheel cylinder top and the inside surface near described brake drum.
Between the clutch end of described power take-off module and described semiaxis, be provided with torque rotary speed sensor.
Described power take-off module comprises testing table pedestal, testing table pedestal is provided with motor and variator, the input shaft of variator is connected with motor, output shaft is connected with one end of described torque rotary speed sensor by shaft coupling, and the other end of torque rotary speed sensor is connected with described semiaxis by another shaft coupling.
Described motor is Y-series threephase asynchronous.
Described single-wheel test module also comprises support, support comprises the hollow taper housing that horizontally disposed and described semiaxis is coaxial, hollow taper housing is enclosed within semiaxis outside, described detent and wheel hub are arranged on the outside of hollow taper housing, and the end flange of semiaxis is stretched out outside hollow taper housing and is fixedly connected with wheel hub.
Described wheel hub is arranged on described hollow taper housing by bearing, and described back-plate is enclosed within on hollow taper housing.
The outer end of described hollow taper housing is provided with the set nut to described brake drum axial location.
New automobile drum brake heat-machine performance testing device of the present utility model arranges non-contact infrared temperature sensor on back-plate, easy for installation, under brake drum High Rotation Speed, can measure its internal surface temperature; Along with the rotation of brake drum, can effectively measure the temperature at its inside surface diverse location place, sampling precision is high; In addition, by torque rotary speed sensor being arranged between the clutch end and semiaxis of power take-off module, synchro measure semiaxis driving torque and hub rotation speed, obtain braking moment based on dynamic static(al) (square) equilibrium principle again, device is simple, compared with traditional automobile rotary drum testing table, there is compact conformation, the advantage little, cost is low takes up room.
Brief description of the drawings
Fig. 1 is the structural representation of the proving installation of embodiment mono-;
Fig. 2 is the structural representation of the proving installation of embodiment bis-;
Fig. 3 is the layout schematic diagram of temperature sensor;
Mark in above-mentioned figure is: 1, power take-off module; 1A, testing table pedestal; 1B, motor; 1C, clutch coupling; 1D, variator; 1E, front shaft coupling; 2, single-wheel test module; 2A, semiaxis; 2B, hollow taper housing; 2C, back-plate; 2D, sensor stand; 2E, brake drum; 2F, wheel hub; 2G, bearing; 2H, set nut; 2I, flange; 2J, screw; 2K, brake-shoe; 2L, actuate wheel cylinder; 2M, rear shaft coupling; 2N, right web joint; 3A, torque rotary speed sensor; 3B, non-contact infrared temperature sensor; 4, base platen.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is described in further detail, and object is to help those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technical scheme, and contributes to its enforcement.
Embodiment mono-
As shown in figures 1 and 3, a kind of new automobile drum brake heat-machine performance testing device of the present embodiment, comprise single-wheel test module 2 and power take-off module 1, single-wheel test module 2 is mainly made up of detent and wheel hub 2F, power take-off module 1 is for providing power, its clutch end is connected with wheel hub 2F by semiaxis 2A, detent comprises back-plate 2C, actuate wheel cylinder 2L and brake drum 2E, back-plate 2C is provided with non-contact infrared temperature sensor 3B, under brake drum 2E High Rotation Speed, can measure its internal surface temperature, along with the rotation of brake drum 2E, can effectively measure the temperature at its inside surface diverse location place, sampling precision is high.
Specifically, the medial surface of back-plate 2C is provided with the sensor stand 2D for equipped with non-contact infrared temperature sensor 3B, sensor stand 2D is positioned at and actuates wheel cylinder 2L top and the inside surface near brake drum 2E, promote brake-shoe 2K motion when actuating wheel cylinder 2L, make to produce friction between brake-shoe 2K and brake drum 2E and cause brake drum 2E temperature rise, the size of the infrared radiation energy that brake drum 2E outwards launches is corresponding with the temperature of brake drum 2E itself, non-contact infrared temperature sensor 3B is transformed into electric signal by the radiation energy that receives this infrared ray and had, can record accordingly the temperature rise data of brake drum 2E.
In the present embodiment, this proving installation also comprises base platen 4, and power take-off module 1 and single-wheel test module 2 are arranged on base platen 4.Power take-off module 1 comprises the testing table pedestal 1A being fixedly mounted on base platen 4, a motor 1B and a variator 1D are installed on testing table pedestal 1A, the input shaft of variator 1D is connected by clutch coupling 1C with the output shaft of motor 1B, and the output shaft of variator 1D is fixedly connected with semiaxis 2A by shaft coupling.On variator 1D, have operating rod, motor 1B is Y-series threephase asynchronous 1B.
In the present embodiment, single-wheel test module 2 also comprises support, and support comprises horizontally disposed hollow taper housing 2B and the vertical right web joint 2N that arrange coaxial with semiaxis 2A, and hollow taper housing 2B is arranged on base platen 4 by right web joint 2N.Hollow taper housing 2B is enclosed within the outside of semiaxis 2A, detent and wheel hub 2F are arranged on the outside of hollow taper housing 2B, the end flange 2I of semiaxis 2A stretches out outside hollow taper housing 2B and is fixedly connected with wheel hub 2F, the rim section of flange 2I has through hole, passes and connects semiaxis 2A and wheel hub 2F for screw 2J.Hollow taper housing 2B is in the time arranging, and bigger diameter end is towards multi-speed transmission 1D, and miner diameter end is towards the flange 2I of semiaxis 2A.
It is upper that wheel hub 2F is arranged on hollow taper housing 2B by bearing 2G, and bearing 2G has two, and the inside and outside both sides of wheel hub 2F have counterbore, are respectively used to install two bearing 2G.The outer face rim section of wheel hub 2F has threaded hole, for mounting screw 2J.
Detent is the self-boosting type drum brake of prior art, and as shown in figures 1 and 3, detent mainly comprises the back-plate 2C of thin disc-shape, brake drum 2E taking inner cylinder face as working surface, actuates wheel cylinder 2L and brake-shoe 2K.Brake drum 2E is fixedly connected with wheel hub 2F, and back-plate 2C is enclosed within hollow taper housing 2B and goes up and fix, and actuates wheel cylinder 2L and is fixed on back-plate 2C.The miner diameter end of hollow taper housing 2B is provided with external thread, and the set nut 2H for brake drum 2E being carried out to axial location is installed at the screw thread place of miner diameter end.
Embodiment bis-
As shown in Figure 2, the key distinction of a kind of new automobile drum brake heat-machine performance testing device of the present embodiment and the proving installation of embodiment mono-is, the proving installation of the present embodiment also comprises torque rotary speed sensor 3A, this torque rotary speed sensor 3A is provided in a side of between the clutch end and semiaxis 2A of power take-off module 1, specifically, the output shaft of variator 1D is connected with one end of torque rotary speed sensor 3A by front shaft coupling 1E, and the other end of torque rotary speed sensor 3A is connected with semiaxis 2A by rear shaft coupling 2M.This torque rotary speed sensor 3A is integrated moment of torsion and speed probe, built-in non-contact torque sensor is for measuring the driving torque of semiaxis 2A, built-in wheel speed sensors adopts photoelectricity fluted disc mode to measure the rotating speed of semiaxis 2A, due to semiaxis 2A and wheel hub 2F synchronous rotary, so can record wheel hub 2F rotating speed.
According to dynamic static(al) (square) equilibrium principle, there is equilibrium relation in the moment of inertia of the driving torque of semiaxis 2A, system and brake braking force square.Torque rotary speed sensor 3A records semiaxis driving torque M and wheel hub rotational angular velocity ω, by acceleration
be the numerical differentiation of ω, obtain acceleration
in this proving installation, semiaxis radius, hub radius and mass of system are known quantity, thereby can try to achieve test macro moment of inertia J.And have: J=J
pass+ J
wheel.Wherein J
passfor semiaxis and power train moment of inertia thereof, J
wheelfor wheel hub moment of inertia.Making braking moment is T
b, there is following relational expression:
Semiaxis driving torque M and system moment of inertia in formula
be known quantity, can try to achieve braking moment T according to relational expression
b.
All the other structures of the proving installation of the present embodiment are identical with embodiment's mono-.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (9)
1. new automobile drum brake heat-machine performance testing device, comprise the single-wheel test module and the power take-off module that are mainly formed by detent and wheel hub, the clutch end of power take-off module is connected with wheel hub by semiaxis, detent comprises back-plate, actuates wheel cylinder and brake drum, it is characterized in that: described back-plate is provided with non-contact infrared temperature sensor.
2. new automobile drum brake heat-machine performance testing device according to claim 1, is characterized in that: the inner side of described back-plate is provided with the sensor stand for described non-contact infrared temperature sensor is installed.
3. new automobile drum brake heat-machine performance testing device according to claim 2, is characterized in that: described in described sensor stand is positioned at, actuate wheel cylinder top and the inside surface near described brake drum.
4. according to the new automobile drum brake heat-machine performance testing device described in claim 2 or 3, it is characterized in that: between the clutch end of described power take-off module and described semiaxis, be provided with torque rotary speed sensor.
5. new automobile drum brake heat-machine performance testing device according to claim 4, it is characterized in that: described power take-off module comprises testing table pedestal, testing table pedestal is provided with motor and variator, the input shaft of variator is connected with motor, output shaft is connected with one end of described torque rotary speed sensor by shaft coupling, and the other end of torque rotary speed sensor is connected with described semiaxis by another shaft coupling.
6. new automobile drum brake heat-machine performance testing device according to claim 5, is characterized in that: described motor is Y-series threephase asynchronous.
7. new automobile drum brake heat-machine performance testing device according to claim 6, it is characterized in that: described single-wheel test module also comprises support, support comprises the hollow taper housing that horizontally disposed and described semiaxis is coaxial, hollow taper housing is enclosed within semiaxis outside, described detent and wheel hub are arranged on the outside of hollow taper housing, and the end flange of semiaxis is stretched out outside hollow taper housing and is fixedly connected with wheel hub.
8. new automobile drum brake heat-machine performance testing device according to claim 7, is characterized in that: described wheel hub is arranged on described hollow taper housing by bearing, and described back-plate is enclosed within on hollow taper housing.
9. new automobile drum brake heat-machine performance testing device according to claim 8, is characterized in that: the outer end of described hollow taper housing is provided with the set nut to described brake drum axial location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082122.5U CN203758672U (en) | 2014-02-25 | 2014-02-25 | Novel automobile drum type brake heat-machine performance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082122.5U CN203758672U (en) | 2014-02-25 | 2014-02-25 | Novel automobile drum type brake heat-machine performance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203758672U true CN203758672U (en) | 2014-08-06 |
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ID=51253928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420082122.5U Expired - Fee Related CN203758672U (en) | 2014-02-25 | 2014-02-25 | Novel automobile drum type brake heat-machine performance test device |
Country Status (1)
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| CN (1) | CN203758672U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136478A (en) * | 2015-09-23 | 2015-12-09 | 中国煤炭科工集团太原研究院有限公司 | Totally-enclosed wet-type multi-disc brake performance test device |
| CN107957387A (en) * | 2017-12-23 | 2018-04-24 | 安徽工程大学 | The test device and evaluation method of down products dust content |
| CN109073488A (en) * | 2016-04-15 | 2018-12-21 | Zf 腓德烈斯哈芬股份公司 | Brake testboard module |
-
2014
- 2014-02-25 CN CN201420082122.5U patent/CN203758672U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136478A (en) * | 2015-09-23 | 2015-12-09 | 中国煤炭科工集团太原研究院有限公司 | Totally-enclosed wet-type multi-disc brake performance test device |
| CN109073488A (en) * | 2016-04-15 | 2018-12-21 | Zf 腓德烈斯哈芬股份公司 | Brake testboard module |
| CN107957387A (en) * | 2017-12-23 | 2018-04-24 | 安徽工程大学 | The test device and evaluation method of down products dust content |
| CN107957387B (en) * | 2017-12-23 | 2023-06-09 | 安徽工程大学 | Method for evaluating dust content of down products |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150225 |
|
| EXPY | Termination of patent right or utility model |