CN111122178B - Axle type chassis dynamometer for vehicle - Google Patents
Axle type chassis dynamometer for vehicle Download PDFInfo
- Publication number
- CN111122178B CN111122178B CN202010056404.8A CN202010056404A CN111122178B CN 111122178 B CN111122178 B CN 111122178B CN 202010056404 A CN202010056404 A CN 202010056404A CN 111122178 B CN111122178 B CN 111122178B
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- detection
- detection box
- eddy current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
Abstract
The invention discloses a vehicle shaft type chassis dynamometer, which comprises a rack, wherein the side wall of the rack is rotatably connected with a plurality of wheels, the upper end of the rack is detachably connected with a detection box, the side wall of the detection box is provided with a first through hole, a first support bearing is arranged in the first through hole, an input shaft is arranged in the first support bearing, the end part of the input shaft is provided with a coupler, and one end of the input shaft, which is far away from the first support bearing, is coaxially and fixedly connected with a torque detection wheel. The invention directly drives the input shaft in the detection box to rotate through the output shaft of the vehicle chassis, and drives the rotation speed detection wheel and the torque detection wheel to rotate through the input shaft, so that the condition of the vehicle during running can be obtained in time, thus avoiding the measurement error caused by the slippage between a tire and a roller in a roller type detection mode, and preventing the vehicle from rushing out due to the deviation when the wheel runs at high speed in the roller type detection mode to generate dangerous conditions.
Description
Technical Field
The invention relates to the technical field of vehicle detection equipment, in particular to a vehicle shaft type chassis dynamometer.
Background
The chassis dynamometer is an indoor bench test device for testing performances such as automobile dynamic property, multi-working condition emission indexes, fuel indexes and the like.
The existing chassis dynamometer is a drum-type chassis dynamometer generally, when in detection, wheels of a detected vehicle are supported on a drum, the wheels rotate at a certain rotating speed to enable the drum to rotate, corresponding data are measured by equipment connected with the drum, and the data are fed back to a test system to obtain the condition of the vehicle in the driving process. However, in the measurement mode, the friction force between the tire and the roller is used for transmission, the tire and the roller are easy to slip in the test process, so that measurement errors are caused, and meanwhile, when the tire runs at a high speed, if a certain included angle is formed between the tire and the roller, the vehicle can be rushed out due to deviation, and finally dangerous situations are caused.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a vehicle axle type chassis dynamometer.
In order to achieve the purpose, the invention adopts the following technical scheme:
the vehicle shaft type chassis dynamometer comprises a rack, wherein the side wall of the rack is rotatably connected with a plurality of wheels, the upper end of the rack is detachably connected with a detection box, a first through hole is formed in the side wall of the detection box, a first supporting bearing is installed in the first through hole, an input shaft is arranged in the first supporting bearing, a coupler is installed at the end part of the input shaft, one end of the input shaft, which is far away from the first supporting bearing, is coaxially and fixedly connected with a torque detection wheel, one end of the torque detection wheel is fixedly connected with a force arm, an eddy current brake reaction force sensor matched with the force arm is installed in the detection box, an eddy current brake is installed on the side wall of the torque detection wheel, a rotating speed detection wheel is installed on the side wall of the eddy current brake, a rotating speed sensor matched with the rotating speed detection wheel is installed in the detection box, and a dynamic torque sensor matched with the rotating speed detection wheel is also installed in the detection box, the second through-hole has been seted up to the lateral wall of detection case, install second support bearing in the second through-hole, be equipped with the back shaft in the second support bearing, just the one end and the coaxial fixed connection of rotational speed detection wheel that the second support bearing was kept away from to the back shaft, eddy current brake reaction force sensor, rotational speed sensor have the computer through data input output card electric connection jointly.
Preferably, a plurality of air intakes have been seted up to the upper end of detection case, the air outlet has been seted up to the lateral wall of detection case, it is connected with the fan of blowing to rotate on the inner wall of detection case, the spout has been seted up to the lateral wall of detection case, rotate on the inner wall of spout and connect intermeshing's first gear and second gear, first gear and the coaxial fixed connection of fan of blowing, fixedly connected with driving motor on the lateral wall of detection case, just driving motor's output shaft and the coaxial fixed connection of second gear.
Preferably, the stock solution chamber has been seted up to the lateral wall of detection case, the stock solution intracavity is filled there is the coolant liquid, the lateral wall of detection case has been seted up and has been taken out the sap cavity, inlay the feed liquor pipe that is equipped with intercommunication stock solution chamber and liquid suction chamber on the inner wall of detection case, the sealed sliding connection of liquid suction chamber has the sliding plug, install first check valve in the feed liquor pipe, install the second check valve on the sliding plug, install the drive arrangement who drives sliding plug round trip movement in the spout, it is equipped with the condenser pipe to inlay on the inner wall of detection case, the one end and the stock solution chamber intercommunication of condenser pipe, the other end and the liquid suction chamber intercommunication of condenser pipe.
Preferably, the driving device comprises a screw nut which is slidably connected in the chute, a reciprocating screw rod matched with the screw nut is rotatably connected to the inner wall of the chute, the reciprocating screw rod is fixedly connected with the second gear in a coaxial mode, and the screw nut is fixedly connected with the sliding plug through a connecting rod.
Preferably, the side wall of the detection box is provided with a liquid filling port communicated with the liquid storage cavity, and the liquid filling port is internally connected with a sealing plug in a sealing and sliding manner.
Preferably, the first one-way valve only allows the cooling liquid to flow from the liquid storage cavity to the liquid pumping cavity, and the second one-way valve only allows the cooling liquid to flow from one side of the sliding plug close to the liquid inlet pipe to the other side of the sliding plug close to the condensation pipe.
Preferably, a data processing and operation module is arranged in the computer, an information input module and an information output module are arranged in the data input/output card, the information input module is electrically connected with the reaction force sensor, the rotating speed sensor and the dynamic torque sensor of the eddy current brake, the information input module is also electrically connected with the spark plug pulse sensor, the information output module is electrically connected with the eddy current brake, the information input module is electrically connected with the load adjusting module, and the information output module is electrically connected with the display terminal.
Preferably, the information input module is used for inputting information transmitted by the eddy current brake reaction force sensor, the rotating speed sensor, the dynamic torque sensor, the spark plug pulse sensor and the load adjusting module, the load adjusting module is used for adjusting the load capacity of the input shaft, the information output module is used for outputting the load adjusting information to the eddy current brake, and the information output module is further used for outputting the information processed by the data processing and computing module to the display terminal.
The invention has the following beneficial effects:
1. an output shaft of a vehicle chassis directly drives an input shaft in the detection box to rotate, the input shaft drives a rotating speed detection wheel and a torque detection wheel to rotate, and meanwhile, a rotating speed sensor and a dynamic torque sensor detect related data and input the data into a computer through a data input and output card for processing and operation, so that the condition of the vehicle during running can be obtained in time, and thus, a measurement error caused by slippage between a tire and a roller in a drum-type detection mode can be avoided;
2. the output shaft of the chassis of the vehicle directly drives the input shaft in the detection box to rotate so as to measure, and the dangerous condition caused by the fact that the vehicle rushes out due to deviation when wheels run at high speed in a drum-type detection mode can be prevented;
3. through setting up the eddy current brake, can simulate out the various resistances that the vehicle received at the process of traveling to the rotating member loading resistance in the detection case, still can adjust the load size through load adjusting module simultaneously, so still can make measuring result more accurate.
Drawings
FIG. 1 is a schematic structural diagram of a vehicle axle type chassis dynamometer provided by the invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 1;
FIG. 4 is a schematic cross-sectional view at C-C in FIG. 1;
FIG. 5 is a block diagram of an internal system of a vehicle axle type chassis dynamometer, according to the present invention.
In the figure: the device comprises a machine frame 1, a detection box 2, a wheel 3, a first through hole 4, a first supporting bearing 5, an input shaft 6, an eddy current brake 7, a torque detection wheel 8, a rotating speed detection wheel 9, a force arm 10, an eddy current brake reaction force sensor 11, a rotating speed sensor 12, a supporting shaft 13, a second through hole 14, a second supporting bearing 15, a liquid storage cavity 16, a computer 17, a driving motor 18, a liquid pumping cavity 19, a sliding plug 20, a connecting rod 21, a liquid inlet pipe 22, a condensation pipe 23, a sliding chute 24, a reciprocating lead screw 25, a lead screw nut 26, a first gear 27, a second gear 28, a blower fan 29, an air inlet 30, an air outlet 31, a dynamic torque sensor 32, a chassis output shaft 33 and a coupler 34.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-5, the vehicle shaft type chassis dynamometer comprises a frame 1, wherein the side wall of the frame 1 is rotatably connected with a plurality of wheels 3, the upper end of the frame 1 is detachably connected with a detection box 2, the side wall of the detection box 2 is provided with a first through hole 4, a first support bearing 5 is installed in the first through hole 4, an input shaft 6 is arranged in the first support bearing 5, and the end part of the input shaft 6 is provided with a coupler 34.
The coaxial fixedly connected with moment detection wheel 8 of one end that first support bearing 5 was kept away from to input shaft 6, the one end fixedly connected with arm of force 10 of moment detection wheel 8, install in the detection case 2 with arm of force complex eddy current brake reaction force sensor 11, eddy current brake 7 is installed to the lateral wall of moment detection wheel 8, rotational speed detection wheel 9 is installed to the lateral wall of eddy current brake 7, install in the detection case 2 with rotational speed detection wheel 9 complex revolution speed sensor 12, still install in the detection case 2 with rotational speed detection wheel 9 complex dynamic torque sensor 32.
It should be noted that the eddy current brake 7 can also be replaced by a generator, a pump, a flywheel, and a magnetic powder brake, and only the load effect needs to be improved, and meanwhile, the eddy current brake 7 is also the existing brake equipment, and the installation mode thereof is also the existing mature technology.
The lateral wall of detection case 2 has seted up second through-hole 14, installs second support bearing 15 in the second through-hole 14, is equipped with back shaft 13 in the second support bearing 15, and back shaft 13 keeps away from the coaxial fixed connection of one end and rotational speed detection wheel 9 of second support bearing 15.
The eddy current brake 7, the eddy current brake reaction force sensor 11 and the rotating speed sensor 12 are electrically connected with a computer 17 through a data input/output card.
The eddy current brake 7, the eddy current brake reaction force sensor 11, the rotation speed sensor 12, and the data input/output card are common components in conventional electrical inspection equipment, and the connection method and the installation method thereof are conventional mature technologies.
A plurality of air intakes 30 have been seted up to the upper end of detection case 2, and air outlet 31 has been seted up to the lateral wall of detection case 2, rotates on the inner wall of detection case 2 and is connected with blast fan 29, and spout 24 has been seted up to the lateral wall of detection case 2, rotates on the inner wall of spout 24 and connects intermeshing's first gear 27 and second gear 28.
The first gear 27 is coaxially and fixedly connected with the blower fan 29, the driving motor 18 is fixedly connected to the side wall of the detection box 2, and the output shaft of the driving motor 18 is coaxially and fixedly connected with the second gear 28.
The driving device comprises a screw nut 26 which is connected in the sliding groove 24 in a sliding mode, a reciprocating screw 25 matched with the screw nut 26 is connected to the inner wall of the sliding groove 24 in a rotating mode, the reciprocating screw 25 is fixedly connected with the second gear 28 in a coaxial mode, and the screw nut 26 is fixedly connected with the sliding plug 20 through a connecting rod 21.
It should be noted that, by providing the first gear 27 and the second gear 28, the blower fan 29 and the reciprocating screw 25 can be operated simultaneously through the cooperation of the two gears, so that the air can be blown and the cooling liquid can flow circularly through the input of the same driving motor 18, which not only saves electric energy, but also dissipates heat from the condenser tube 23 by the air blown by the blower fan 29, and the air and the cooling liquid complement each other, thereby further improving the heat dissipation effect.
The side wall of the detection box 2 is provided with a liquid feeding port communicated with the liquid storage cavity 16, and the inside of the liquid feeding port is hermetically and slidably connected with a sealing plug.
The computer 17 is internally provided with a data processing and operation module, the data input/output card is internally provided with an information input module and an information output module, the information input module is electrically connected with the reaction force sensor 11, the rotating speed sensor 12 and the dynamic torque sensor 32 of the eddy current brake, the information input module is also electrically connected with a spark plug pulse sensor, the information output module is electrically connected with the eddy current brake 7, the information input module is electrically connected with a load adjusting module, and the information output module is electrically connected with a display terminal.
The information input module is used for inputting information transmitted by the eddy current brake reaction force sensor 11, the rotating speed sensor 12, the dynamic torque sensor 32, the spark plug pulse sensor and the load adjusting module, the load adjusting module is used for adjusting the load capacity of the input shaft 6, the information output module is used for outputting load adjusting information to the eddy current brake, and the information output module is also used for outputting the information processed by the data processing and operation module to the display terminal.
In the use process of the device, a certain vehicle chassis output shaft 33 is arranged in a coupler 34 (as shown in figure 1), the vehicle is started at the moment, so that the vehicle chassis output shaft 33 rotates, the input shaft 6 is driven to rotate together under the driving of the coupler 34, the torque detection wheel 8 and the rotating speed detection wheel 9 which are coaxially arranged with the input shaft 6 are further driven to rotate, the eddy current brake reaction force sensor 11, the rotating speed sensor 12 and the dynamic torque sensor 32 which are matched with the torque detection wheel 8 and the rotating speed detection wheel can record the torque, the rotating speed and the torque information of the torque detection wheel 8 and the rotating speed detection wheel 9, the recorded information is input into a data processing and transportation module in a computer 17 through an information input module in a data input and output module, and the information is output to a display terminal of the computer 17 through an information output module after the processing and the operation of the computer 17, the running state of the vehicle can be reflected in time. Meanwhile, the eddy current brake 7 can also increase the load of the input shaft 6 so as to simulate the resistance encountered by the vehicle in the driving process, so that the measurement result is more accurate, the load can be adjusted through the load adjusting module, and the load adjusting information can be transmitted to the eddy current brake 7 through the information input module and the information output module, so that the purpose of adjusting the load is achieved.
If eddy current brake 7 is improving when higher load, can produce higher temperature, cause the damage to check out test set for avoiding high temperature, can start driving motor 18 this moment and make second gear 28 rotate, so can make the first gear 27 with second gear 28 meshing rotate, and then drive blower fan 29 and rotate, can be discharged outside air by air intake 30 suction by air outlet 31 again, so can make the inside and outside air of detection case 2 alternately flow fast, thereby distribute away the inside heat of detection case 2 fast, avoid high temperature damage detection part.
Meanwhile, the driving motor 18 can drive the reciprocating lead screw 25 to rotate, so that a lead screw nut 26 matched with the reciprocating lead screw 25 moves back and forth in the sliding groove 24, the sliding plug 20 can be driven to move back and forth in the liquid pumping cavity 19 under the action of the connecting rod 21, under the flow limiting action of the first one-way valve and the second one-way valve, the cooling liquid in the liquid storage cavity 16 can be pumped into the liquid pumping cavity 19 through the liquid inlet pipe 22 when the sliding plug 20 moves to the right, and the cooling liquid at the left part of the sliding plug 20 can be extruded into the right side of the sliding plug 20 when the sliding plug 20 moves to the left, so that the cooling liquid in the liquid storage cavity 16 can be continuously pumped into the liquid pumping cavity 19 and then discharged into the condensing pipe 23 and finally flows into the liquid storage cavity 16 in a reciprocating mode, and the cooling can be carried out on the eddy current brake 7, and the heat dissipation effect is further enhanced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. Shaft type chassis dynamometer of vehicle, including frame (1), its characterized in that, the lateral wall of frame (1) rotates and is connected with a plurality of wheels (3), the upper end of frame (1) can be dismantled and is connected with detection case (2), first through-hole (4) have been seted up to the lateral wall of detection case (2), install first support bearing (5) in first through-hole (4), be equipped with input shaft (6) in first support bearing (5), shaft coupling (34) are installed to the tip of input shaft (6), the coaxial fixedly connected with moment detection wheel (8) of one end that first support bearing (5) were kept away from in input shaft (6), the one end fixedly connected with arm of force (10) of moment detection wheel (8), install in detection case (2) with arm of force complex eddy current brake reaction force sensor (11), eddy current brake (7) are installed to the lateral wall of moment detection wheel (8), a rotating speed detection wheel (9) is arranged on the side wall of the eddy current brake (7), a rotating speed sensor (12) matched with the rotating speed detection wheel (9) is arranged in the detection box (2), a dynamic torque sensor (32) matched with the rotating speed detection wheel (9) is also arranged in the detection box (2), a second through hole (14) is formed in the side wall of the detection box (2), a second supporting bearing (15) is installed in the second through hole (14), a supporting shaft (13) is arranged in the second supporting bearing (15), and one end of the supporting shaft (13) far away from the second supporting bearing (15) is coaxially and fixedly connected with the rotating speed detection wheel (9), the eddy current brake (7), the eddy current brake reaction force sensor (11) and the rotating speed sensor (12) are electrically connected with a computer (17) through a data input/output card;
the upper end of the detection box (2) is provided with a plurality of air inlets (30), the side wall of the detection box (2) is provided with an air outlet (31), the inner wall of the detection box (2) is rotatably connected with a blowing fan (29), the side wall of the detection box (2) is provided with a sliding chute (24), the inner wall of the sliding chute (24) is rotatably connected with a first gear (27) and a second gear (28) which are meshed with each other, the first gear (27) and the blowing fan (29) are coaxially and fixedly connected, the side wall of the detection box (2) is fixedly connected with a driving motor (18), and an output shaft of the driving motor (18) is coaxially and fixedly connected with the second gear (28);
a liquid storage cavity (16) is formed in the side wall of the detection box (2), cooling liquid is filled in the liquid storage cavity (16), a liquid pumping cavity (19) is formed in the side wall of the detection box (2), a liquid inlet pipe (22) for communicating the liquid storage cavity (16) with the liquid pumping cavity (19) is embedded in the inner wall of the detection box (2), a sliding plug (20) is connected in the liquid pumping cavity (19) in a sealing and sliding mode, a first one-way valve is installed in the liquid inlet pipe (22), a second one-way valve is installed on the sliding plug (20), a driving device for driving the sliding plug (20) to move back and forth is installed in the sliding groove (24), a condensation pipe (23) is embedded in the inner wall of the detection box (2), one end of the condensation pipe (23) is communicated with the liquid storage cavity (16), and the other end of the condensation pipe (23) is communicated with the liquid pumping cavity (19);
the driving device comprises a screw nut (26) which is connected in a sliding groove (24) in a sliding mode, a reciprocating screw (25) matched with the screw nut (26) is connected to the inner wall of the sliding groove (24) in a rotating mode, the reciprocating screw (25) is coaxially and fixedly connected with a second gear (28), and the screw nut (26) is fixedly connected with the sliding plug (20) through a connecting rod (21);
a liquid feeding port communicated with the liquid storage cavity (16) is formed in the side wall of the detection box (2), and a sealing plug is connected in the liquid feeding port in a sealing and sliding manner;
the first one-way valve only allows the cooling liquid to flow from the liquid storage cavity (16) to the liquid pumping cavity (19), and the second one-way valve only allows the cooling liquid to flow from one side of the sliding plug (20) close to the liquid inlet pipe (22) to the other side of the sliding plug (20) close to the condensation pipe (23);
the computer (17) is internally provided with a data processing and operation module, the data input/output card is internally provided with an information input module and an information output module, the information input module is electrically connected with the reaction force sensor (11), the rotating speed sensor (12) and the dynamic torque sensor (32) of the eddy current brake, the information input module is also electrically connected with a spark plug pulse sensor, the information output module is electrically connected with the eddy current brake (7), the information input module is electrically connected with a load adjusting module, and the information output module is electrically connected with a display terminal;
the information input module is used for inputting information transmitted by an eddy current brake reaction force sensor (11), a rotating speed sensor (12), a dynamic torque sensor (32), a spark plug pulse sensor and a load adjusting module, the load adjusting module is used for adjusting the load capacity of the input shaft (6), the information output module is used for outputting load adjusting information to the eddy current brake, and the information output module is further used for outputting the information processed by the data processing and operation module to a display terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010056404.8A CN111122178B (en) | 2020-03-24 | 2020-03-24 | Axle type chassis dynamometer for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056404.8A CN111122178B (en) | 2020-03-24 | 2020-03-24 | Axle type chassis dynamometer for vehicle |
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| CN111122178A CN111122178A (en) | 2020-05-08 |
| CN111122178B true CN111122178B (en) | 2021-08-17 |
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| CN113310614B (en) * | 2021-05-26 | 2022-06-24 | 上海交通大学 | System and method for measuring friction force of low-speed machine for ship |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104568474A (en) * | 2015-01-28 | 2015-04-29 | 太原艾逖汽车检测设备有限公司 | Road surface running condition simulation device for automobile |
| CN205594928U (en) * | 2016-03-05 | 2016-09-21 | 太原天瑞迪汽车检测设备有限公司 | New energy automobile system -wide condition is exempted from way examination simulation teching and is examined test table |
| CN106163187A (en) * | 2016-08-15 | 2016-11-23 | 成都弥荣科技发展有限公司 | It is applicable to the protective cover improved structure of road simulation dynamometer |
| CN208206358U (en) * | 2018-04-11 | 2018-12-07 | 安徽清泉新能源科技集团有限责任公司 | A kind of motor dynamometer for electric vehicle |
| CN208223823U (en) * | 2018-05-07 | 2018-12-11 | 广东泓胜科技股份有限公司 | A kind of motor vehicle detecting chassis dynamometer of included refrigerating function |
| EP3825675B1 (en) * | 2018-07-18 | 2024-01-10 | Horiba, Ltd. | Vehicle testing device |
| CN209781021U (en) * | 2019-03-30 | 2019-12-13 | 湖南库泠斯特科技有限公司 | Novel heat dissipation automobile engine cooling system |
| CN109921568B (en) * | 2019-04-01 | 2020-12-08 | 灵璧县浩翔信息科技有限公司 | Automatic heat dissipation cooling mechanism of new energy automobile generator |
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