CN201583374U - Suspension-type car chassis electric dynamometer - Google Patents
Suspension-type car chassis electric dynamometer Download PDFInfo
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- CN201583374U CN201583374U CN2010200010710U CN201020001071U CN201583374U CN 201583374 U CN201583374 U CN 201583374U CN 2010200010710 U CN2010200010710 U CN 2010200010710U CN 201020001071 U CN201020001071 U CN 201020001071U CN 201583374 U CN201583374 U CN 201583374U
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Abstract
The utility model discloses a suspension-type car chassis electric dynamometer, which comprises a stander, wherein the middle part of the stander is provided with a supporting shell, the middle part of the supporting shell is provided with a two-shaft motor, two output shafts of the two-shaft motor are respectively provided with a roller, a continuously-driven bearing mechanism is arranged respectively between two ends of a two-shaft motor shell and the roller corresponding to the two-shaft motor, the two continuously-driven bearing mechanism on two ends of the two-shaft motor are symmetric to each other, have identical rotation speed and have opposite rotation direction. The continuously-driven bearing mechanism is arranged between the end part of the two-shaft motor and the roller, so the accuracy of the test is improved, and the service life of the dynamometer is prolonged; and the two-shaft motor with large torque and low rotation speed is used as a drive motor and is assembled on the middle position of the dynamometer, so the structure is compact and reasonable, the installation is rapid and convenient, and the land occupation area of a foundation pit is reduced.
Description
Technical field
The utility model relates to a kind of vehicle performance checkout equipment, and particularly a kind of middle-size and small-size vehicle carries out the chassis dynamometer of indoor bench test.
Background technology
Road simulation dynamometer is a kind of important indoor bench test equipment, not only can carry out dynamic property to automobile by chassis dynamometer and detect, but also can measure multi-state discharge index and oil consumption etc.The function of road simulation dynamometer is by the control to load simulation and charger, replaces the road surface with drum surface, realizes all kinds of operating modes of vehicle ' are simulated.Has the advantage that the external condition of not being subjected to influences.Can under the condition that automobile does not disintegrate, detect rapidly, reflect the technology status and the usability of each mechanism of automobile, system, parts exactly.Road simulation dynamometer can be searched fault and hidden danger place, help people to take corresponding prevention and guarantee measure, guarantee that vehicle moves under good situation, thereby prolongation automotive service life, improve movement capacity, reduce production costs, reduce environmental pollution, energy savings guarantees the safe operation of vehicle.In addition, road simulation dynamometer can also combine with l-G simulation test, shortens the R﹠D cycle of automobile greatly, finds the defective in the design early, for the performance of car load provides guarantee.
Road simulation dynamometer is to be primary and foremost purpose to measure power, certainly will involve the transition form of energy so, its nucleus equipment is the measurement of power unit, one class is to convert mechanical energy to heat energy, magnetic hysteresis dynamometer machine, electric eddy current dynamometer, mechanical dynamometer machine, hydraulic dynamometer etc. are arranged, not only cause energy dissipation, but also need the configuration heat dissipation equipment.Another kind of is electric dynamometer, is equivalent to a generator, the mechanical energy of prime mover input can be converted into electric energy and feed back to electrical network, and be divided into direct current and exchange two classes, the DC generator advantage is that control is simple, shortcoming is to need periodic maintenance, the AC machine advantage is non-maintaining, and deficiency is that control is complicated.
Present road simulation dynamometer is broadly divided into two classes from structure, and a class is the side-mounted chassis dynamometer of present ubiquitous motor, and promptly the side that motor is placed on dynamometer machine drives.Because this topology layout is fairly simple, so most of road simulation dynamometer all adopts this form.Another kind of is motor middle chassis dynamometer, is about to the centre that motor is placed on dynamometer machine.This chassis dynamometer compact conformation has dwindled the volume of complete machine, for the carrying and the placement of dynamometer machine brought convenience.
Road simulation dynamometer divides by purposes and can be divided into two classes, and a class is to be purpose with the vehicle annual test, i.e. traffic control department vehicle testing line chassis dynamometer, and this dynamometer machine function is single relatively.Another kind of is to be purpose with the vehicle development, i.e. the electric dynamometer for automotive chassis that uses in enterprise and research unit.Maximum between them is not both the former only simulated roadway resistance, and the latter not only wants the simulated roadway resistance also will simulate the inertia of actual vehicle.
Current road simulation dynamometer mainly is the twin-roll dynamometer machine that detection line is used, and this dynamometer machine radius roller is little, the simulated roadway out of true.At the prior art performance and the detection level of road simulation dynamometer, the electric dynamometer for automotive chassis that development technique content is higher is a development trend.
The utility model content
The utility model provides a kind of suspension type electric dynamometer for automotive chassis that can strengthen the test accuracy and can increase the service life for solving the technical matters that exists in the known technology.
The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is: a kind of suspension type electric dynamometer for automotive chassis, comprise frame, described central rack is fixed with support housing, the middle part of described support housing is equipped with dual-axle motor, be separately installed with cylinder on two output shafts of described dual-axle motor, be respectively equipped with the Bearning mechanism of continuous drive between the two ends of described dual-axle motor housing and the described cylinder corresponding, the Bearning mechanism left-right symmetric of the continuous drive at described dual-axle motor housing two ends with it, rotational speed is identical and sense of rotation is opposite.
The Bearning mechanism of described continuous drive comprises that the outer ring is fixed on bearing I and inner ring and the affixed bearing I I of described dual-axle motor housing in the described support housing, described bearing I and the coaxial installation of described bearing I I, and be provided with between the two and drive circle, the power intake of described driving circle is sleeved on the central axle sleeve of described cylinder, and by chain transmission or be connected with the output shaft of motor with transmission synchronously.
The housing of described dual-axle motor is provided with force cell.
Described force cell is a U.S. CE LTRON STC LOAD CELLS
Advantage and the good effect that the utlity model has are: be provided with the Bearning mechanism of continuous drive between the end of dual-axle motor and the cylinder corresponding with it, can make the accuracy of test strengthen, prolong the serviceable life of dynamometer machine; Drive motor adopts the slow-revving dual-axle motor of high pulling torque, is assemblied in the centre position of dynamometer machine, makes compact conformation reasonable, convenience quick for installation, the floor area of having dwindled foundation ditch.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a left view of the present utility model;
Fig. 3 is a vertical view of the present utility model;
Fig. 4 is the cut-open view of the Bearning mechanism of the utility model continuous drive;
Fig. 5 is the left view of the Bearning mechanism of the utility model continuous drive.
Among the figure: 1, base, 2, lateral brace, 3, cylinder, 4, dual-axle motor, 5, motor, 6, support housing, 7, motor output shaft, 8, expansion set, 9, chain, 10, drive circle, 11, bearing I, 12, bearing I I, 13, demarcate the arm mouth, 14, force cell, 15, fan blower, 16, speed encoder.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1～Fig. 5, a kind of suspension type electric dynamometer for automotive chassis of the utility model, comprise the dynamometer machine frame that constitutes by base 1 and lateral brace 2, dual-axle motor 4, two motors 5, the Bearning mechanism of continuous drive, two 48 inches cylinders 3, brake system, fan blower 15, speed encoder 16, force cell 14.Dynamometer machine also is furnished with the PLC rack, power cabinet, computer control system.
The technical characterstic of the utility model mechanical part is: 1) dual-axle motor 4 is mid-: dual-axle motor 4 is placed in the middle of the dynamometer machine, and the power of generation is spread out of by two output shafts, assembles 48 inches cylinders 3 by expansion set 8 on the every motor output shaft 7.In the present embodiment, dual-axle motor 4 adopts variable-frequency motor.Cylinder 3 on the motor output shaft 7 is used for simulated roadway.The mid-structure of this drive motor makes the complete machine axial dimension reduce, and has dwindled the foundation ditch floor area, has reduced machine-building cost and on-the-spot installation expense.2) Bearning mechanism of continuous drive: the Bearning mechanism that between the two ends of dual-axle motor 4 housings and the cylinder 3 corresponding, adds continuous drive with it, as shown in Figure 4, coaxial installation bearing I11 and bearing I I12 between the shell end of dual-axle motor 4 and support housing 6, bearing I I12 is being overlapped in bearing I 11 the insides, wherein the inner ring of bearing I I12 is fixed on the housing of dual-axle motor 4, and the outer ring of bearing I 11 is fixed in the support housing 6.Be provided with between described bearing I 11 and the described bearing I I12 and drive circle 10, the power intake of described driving circle 10 is sleeved on the central axle sleeve of described cylinder 3, be used for the support of cylinder 3, the power intake of described driving circle 10 is connected by the output shaft of chain transmission with motor 5.Certainly, also can adopt synchronous band transmission between driving circle 10 and the motor 5.Dual-axle motor 4 just is in the state of suspending like this.Range of connection is 1.5 tons a force cell 14 on the shell of dual-axle motor 4, force cell 14 is fixed on the support housing 6, force cell 14 can limit the rotation of dual-axle motor 4 housings, and can correspondingly measure the moment of torsion of dual-axle motor 4 housings output.Support housing 6 is provided with demarcates arm mouth 13, can put counterweight in the end of demarcating arm by demarcating arm mouth 13 affixed demarcation arm vertical with its output shaft on the housing of dual-axle motor 4, demarcates verification force cell 14.What in the present embodiment, force cell 14 adopted is U.S. CE LTRONSTC LOAD CELLS.The Bearning mechanism of above-mentioned continuous drive, the power intake that drives circle 10 is sleeved on the central axle sleeve of cylinder 3, cylinder 3 there is supporting role, motor 5 drives the power intake rotation that drives circle 10 by chain 9, what produce between the power intake of the central axle sleeve of cylinder 3 and driving circle 10 is kinetic friction, can effectively reduce the frictional dissipation of output shaft.3) brake system: on two cylinders brake system has been installed all, detent is the clamped-in style structure, has adopted the friction catch principle, similar disc brake.At mounting vehicle, carry out brake hard under the situation that cylinder hypervelocity or dynamometer machine break down.4) cooling system: at dynamometer machine main frame rear portion a fan blower 15 is arranged, follow the work of dual-axle motor 4 and start working.The effect of fan blower 15 is that dual-axle motor 4 is dispelled the heat, and ensures the normal operation of machine.
Drive motor of the present utility model is an alternating-current variable frequency motor, has adopted double output shaft.Because the quality of test vehicle and cylinder all can be applied on the output shaft, the time has been grown and will cause certain damage to output shaft.So between the end of dual-axle motor 4 and cylinder, be provided with the Bearning mechanism of above-mentioned continuous drive, one side of this mechanism plays a supportive role to cylinder, an other side is connected between the shell of support housing 6 and dual-axle motor 4, meeting and cylinder 3, dual-axle motor 4 produce friction, may cause certain frictional dissipation, the Bearning mechanism of continuous drive can reduce friction effectively, has also improved the distribution of stress simultaneously.As Fig. 4, shown in 5, the Bearning mechanism of continuous drive drives bearing I 11 and bearing I I12 rotation by motor 5 by chain 9.When cylinder 3 is static, begin to drive bearing I 11 and bearing I I12 rotation by motor 5, when cylinder rotated, motor 5 worked on.Because kinetic friction is far smaller than static friction, said mechanism has reduced the damping of bearing friction pair largely.The Bearning mechanism left-right symmetric of the continuous drive at dual-axle motor housing two ends, rotational speed is identical, and direction is opposite.So just offset the influence that the bearing rotation by the Bearning mechanism of two continuous drive causes the drive motor output shaft.The another one advantage of the Bearning mechanism of continuous drive is, makes the action of gravity of cylinder can be evenly distributed on the bearing, has prolonged the serviceable life of dynamometer machine, has improved the precision of dynamometer machine.
The technical characterstic of electronic section of the present utility model is: this dynamometer machine also disposes central control system, comprises the electric distribution cabinet, PLC rack, computer control system.The electric distribution cabinet provides power to dynamometer machine, and PLC rack and computer control system are used for the various working conditions of analyzing and processing dynamometer machine.
On this next door, dynamometer machine cylinder 3 centers speed encoder 16 is housed, speed encoder 16 is an optical encoder, and this optical encoder is made up of grating dish and photoelectric detection system.The grating dish is to open several slots on the plectane of certain diameter five equilibrium.Because photoelectric code disk and motor coaxle, during the motor rotation, grating dish and motor be with the speed rotation, and the pick-up unit of forming through electronic components such as light emitting diodes detects exports some pulse signals, and the umber of pulse by the record coding device just can obtain rotating speed of motor.Speed encoder 16 is connected to central control system, gives central control system with the information of feedback cylinder 3.
On the housing of this dynamometer machine drive motor, be provided with a force cell 14, because the power that power that motor stator is subjected to and rotor are subjected to is a pair of reacting force, i.e. equal and opposite in direction.So the moment of torsion of the drive motor housing that force cell 14 is measured output also just equals the moment of torsion of drive motor output.Force cell 14 is connected to central control system, gives central control system with the torque information of feedback drive motor output.
The utility model need be placed on testing vehicle above the cylinder of this dynamometer machine before starting.When placing vehicle, the cylinder of dynamometer machine must maintain static.The brake system of cylinder adopts air clamper, promptly by air pump, with brake bush cylinder is clamped.The clamping force size can regulated at will, to satisfy the vehicle of placing different quality.Brake system is connected to central control system, can control automatically by center system.After the vehicle stationary, start two motors, the Bearning mechanism of continuous drive is started working.As Fig. 4, shown in 5, before middle centrally-mounted driving drives cylinder 3 rotations.At first be that two motors 5 begin to rotate, drive bearing I 11 and bearing I I12 rotation by chain 9.The continuous rotation of Bearning mechanism makes each position of bearing evenly be subjected to the action of gravity of test vehicle and cylinder, makes stress evenly distribute, and has effectively prolonged the serviceable life of this dynamometer machine.In addition, what produce between the power intake of the central axle sleeve of cylinder 3 and driving circle 10 is kinetic friction, and friction factor is less, has so just reduced the frictional dissipation of dynamometer machine.Two Bearning mechanism sense of rotation of the present utility model are opposite, i.e. clockwise direction rotation, and then another one is rotation counterclockwise.Because the power that the bearing rotation can cause output shaft to transmit produces error, so adopted the mode of the relative opposite spin of motor.Be that one of them makes positive work, make negative work for one, so just offset two merits that the Bearning mechanism rotation is done.
On the utility model, simulate when sliding, the size of resistance under the friction speed that contrast road coasting test collects, thus obtain the resistance that needs load.Whole experiment adopts central control system to set and regulate, thereby has realized the control of road resistance simulation.All operation informations and the analog case of final dynamometer machine all reflect on computer control system.
Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.
Claims (4)
1. suspension type electric dynamometer for automotive chassis, comprise frame, it is characterized in that, described central rack is fixed with support housing, the middle part of described support housing is equipped with dual-axle motor, be separately installed with cylinder on two output shafts of described dual-axle motor, be respectively equipped with the Bearning mechanism of continuous drive between the two ends of described dual-axle motor housing and the described cylinder corresponding with it, Bearning mechanism left-right symmetric, the rotational speed of the continuous drive at described dual-axle motor housing two ends is identical and sense of rotation is opposite.
2. suspension type electric dynamometer for automotive chassis according to claim 1, it is characterized in that, the Bearning mechanism of described continuous drive comprises that the outer ring is fixed on bearing I and inner ring and the affixed bearing I I of described dual-axle motor housing in the described support housing, described bearing I and the coaxial installation of described bearing I I, and be provided with between the two and drive circle, the power intake of described driving circle is sleeved on the central axle sleeve of described cylinder, and by chain transmission or be connected with the output shaft of motor with transmission synchronously.
3. suspension type electric dynamometer for automotive chassis according to claim 1 is characterized in that the housing of described dual-axle motor is provided with force cell.
4. suspension type electric dynamometer for automotive chassis according to claim 3 is characterized in that, described force cell is a U.S. CE LTRON STC LOAD CELLS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200010710U CN201583374U (en) | 2010-01-19 | 2010-01-19 | Suspension-type car chassis electric dynamometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200010710U CN201583374U (en) | 2010-01-19 | 2010-01-19 | Suspension-type car chassis electric dynamometer |
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| Publication Number | Publication Date |
|---|---|
| CN201583374U true CN201583374U (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200010710U Expired - Lifetime CN201583374U (en) | 2010-01-19 | 2010-01-19 | Suspension-type car chassis electric dynamometer |
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| Country | Link |
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| CN (1) | CN201583374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769810B (en) * | 2010-01-19 | 2011-05-11 | 中国汽车技术研究中心 | Suspension type electric dynamometer for automotive chassis |
-
2010
- 2010-01-19 CN CN2010200010710U patent/CN201583374U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769810B (en) * | 2010-01-19 | 2011-05-11 | 中国汽车技术研究中心 | Suspension type electric dynamometer for automotive chassis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100915 Effective date of abandoning: 20100119 |