CN211205775U - Five-axis chassis dynamometer - Google Patents
Five-axis chassis dynamometer Download PDFInfo
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- CN211205775U CN211205775U CN202020248573.7U CN202020248573U CN211205775U CN 211205775 U CN211205775 U CN 211205775U CN 202020248573 U CN202020248573 U CN 202020248573U CN 211205775 U CN211205775 U CN 211205775U
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Abstract
The utility model discloses a five chassis dynamometers. The five-axis chassis dynamometer comprises a guide rail, and a first axis dynamometer unit, a second axis dynamometer unit, a third axis dynamometer unit, a fourth axis dynamometer unit and a fifth axis dynamometer unit which are sequentially arranged on the guide rail in a sliding manner and have basically the same structure. The utility model provides a five chassis dynamometers, application scope is wide.
Description
Technical Field
The utility model relates to an automobile inspection equipment field especially relates to a five chassis dynamometers.
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 automobile chassis dynamometer simulates a road surface through a roller, calculates a road simulation equation, and simulates each working condition of an automobile by using a loading device. However, most of the existing chassis dynamometers can only measure by aiming at one specific vehicle measurement, and the application range is small.
SUMMERY OF THE UTILITY MODEL
The utility model provides an overcome the problem that prior art exists, provide a five chassis dynamometer, application scope is wide.
The utility model adopts the technical proposal that:
a five-axis chassis dynamometer comprises
The guide rails are arranged in parallel;
the first shaft dynamometer unit is arranged on the guide rail in a sliding mode; the first axle dynamometer unit comprises a rack, and a first main roller, a second main roller, a third auxiliary roller, a fourth auxiliary roller, a first lifting device, a second lifting device, a vortex machine, an axle distance moving device and a pneumatic brake device which are fixed on the rack, wherein the first main roller is connected with the second main roller, two ends of a connecting structure of the first main roller and the second main roller are connected with the vortex machine and a clutch, the third auxiliary roller is connected with the fourth auxiliary roller, and the first lifting device and the second lifting device are respectively positioned between the first main roller and the third auxiliary roller and between the second main roller and the fourth auxiliary roller;
the second shaft dynamometer unit is in the same structure as the first shaft dynamometer unit, is arranged on the guide rail in a sliding mode and is positioned on one side of the first shaft dynamometer unit, and is connected with a clutch on the first shaft dynamometer unit through a synchronous belt and a variable-wheel-base power transmission device;
the third shaft dynamometer unit is in the same structure as the first shaft dynamometer unit, is arranged on the guide rail in a sliding mode and is positioned on one side, away from the first shaft dynamometer unit, of the second shaft dynamometer unit, and is connected with a clutch on the second shaft dynamometer unit through a synchronous belt and a variable-wheelbase power transmission device;
the fourth shaft dynamometer unit is structurally characterized in that a back-dragging motor is further connected on the basis of the structure of the first shaft dynamometer unit, is arranged on the guide rail in a sliding mode and is positioned on one side, away from the second shaft dynamometer unit, of the third shaft dynamometer unit, the fourth shaft dynamometer unit is connected with a clutch on the third shaft dynamometer unit through a synchronous belt and a variable-axle-distance power transmission device, and the back-dragging motor is connected with the fourth auxiliary roller;
and the fifth dynamometer unit has the same structure as the first dynamometer unit and is arranged on the guide rail in a sliding manner, the fourth dynamometer unit is far away from one side of the third dynamometer unit, and the fifth dynamometer unit is connected with a clutch of the fourth dynamometer unit through a synchronous belt and a variable-wheelbase power transmission device.
Further, the wheel base moving device comprises a wheel base moving motor, a gear is mounted at the end of the power output end of the wheel base moving motor and drives the gear to rotate, and a rack matched with the gear is mounted on the guide rail.
Further, a force sensor is arranged on the vortex machine.
Furthermore, a rotating speed measuring encoder is connected to the vortex machine.
The utility model has the advantages that:
the utility model discloses a solve the little problem of chassis dynamometer application scope among the prior art, designed a five chassis dynamometers. The five-axis chassis dynamometer comprises a guide rail, and a first axis dynamometer unit, a second axis dynamometer unit, a third axis dynamometer unit, a fourth axis dynamometer unit and a fifth axis dynamometer unit which are sequentially arranged on the guide rail in a sliding manner. And the adjacent first shaft dynamometer unit, second shaft dynamometer unit, third shaft dynamometer unit, fourth shaft dynamometer unit and fifth shaft dynamometer unit are connected with the variable-wheel-base power transmission device through the synchronous belt. The vehicle with different wheel bases and different vehicle types is tested by adjusting the distance between each dynamometer unit and starting the corresponding dynamometer unit.
The utility model provides a five-axis automobile chassis dynamometer refers to GB18285 "ignition type engine car exhaust emission limit value and measuring method", GB3847 "automobile compression ignition type engine and compression ignition type engine car exhaust smoke intensity emission limit value and measuring method", JT/T445-2008 "automobile chassis dynamometer" etc. standard's requirement to according to the customization production of technical requirement of inviting the mark. The test device is suitable for various tests such as dynamic detection, oil consumption detection, emission detection and the like of two-axis, three-axis, four-axis and five-axis automobiles with the engine power not exceeding 800kw and the maximum single-axis total mass not exceeding 13000kg in ultrahigh and low temperature environments (20 ℃ to 35 ℃). The dynamometer adopts an eddy current machine type, five chassis dynamometers can change the wheel base, and the change range meets the requirements of the change range of the wheel base of four types of trains.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a five-axis chassis dynamometer according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first dynamometer unit according to an embodiment of the present invention.
Fig. 3 is a schematic view of the working principle of the variable wheel base power transmission device according to the embodiment of the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.
Embodiments of the present invention/utility model will be described in detail below with reference to the drawings.
The utility model discloses an embodiment, five chassis dynamometers, its structure is shown in figure 1. The five-axis chassis dynamometer comprises a guide rail 1, a first axis dynamometer unit 2, a second axis dynamometer unit 3, a third axis dynamometer unit 4, a fourth axis dynamometer unit 5 and a fifth axis dynamometer unit 6. The guide rails 1 are arranged in two in total and are arranged in parallel at intervals. The first shaft dynamometer unit 2, the second shaft dynamometer unit 3, the third shaft dynamometer unit 4, the fourth shaft dynamometer unit 5 and the fifth shaft dynamometer unit 6 are sequentially arranged on the guide rail 1 and can independently slide along the length direction of the guide rail 1. The distance between the first shaft dynamometer cell 2 and the second shaft dynamometer cell 3, and the distance between the second shaft dynamometer cell 3 and the third shaft dynamometer cell 4 are 1625mm, the distance between the third shaft dynamometer cell 4 and the fourth shaft dynamometer cell 5 is 3750mm, and the distance between the fourth shaft dynamometer cell 5 and the fifth shaft dynamometer cell 6 is 2150 mm. The forward and backward movement distance ranges of the first shaft dynamometer unit 2, the second shaft dynamometer unit 3 and the third shaft dynamometer unit 4 are +/-300 mm, and the forward and backward movement distance ranges of the fourth shaft dynamometer unit 5 and the fifth shaft dynamometer unit 6 are +/-400 mm. The adjacent first shaft dynamometer unit 2, second shaft dynamometer unit 3, third shaft dynamometer unit 4, fourth shaft dynamometer unit 5 and fifth shaft dynamometer unit 6 are connected with a variable-shaft-distance power transmission device through a synchronous belt 7, so that the distance between the adjacent first shaft dynamometer unit 2, second shaft dynamometer unit 3, third shaft dynamometer unit 4, fourth shaft dynamometer unit 5 and fifth shaft dynamometer unit 6 can be changed, and the synchronous rotation of the adjacent first shaft dynamometer unit 2, second shaft dynamometer unit 3, third shaft dynamometer unit 4, fourth shaft dynamometer unit 5 and fifth shaft dynamometer unit 6 can be ensured at any time. In the embodiment, the variable-wheelbase power transmission device is a tension wheel, and the working principle of the variable-wheelbase power transmission device is shown in the attached drawing 3.
The first dynamometer unit 2 includes a frame 201, and a first main drum 202, a second main drum 203, a third sub-drum 204, a fourth sub-drum 205, a first lifting device 206, a second lifting device 207, a vortex machine 208, a wheel base moving device, and a pneumatic brake device fixed to the frame 201, as shown in fig. 2. The first main drum 202 and the second main drum 203 are connected, and the distance between the adjacent ends thereof is 800mm and the distance between the remote ends thereof is 3200 mm. The third sub drum 204 and the fourth sub drum 205 are connected, and the distance between the adjacent ends thereof is 800mm, and the distance between the remote ends thereof is 3200 mm. The first main roller 202 and the second main roller 203 are connected with the eddy current machine 208 and the clutch 209 at two ends respectively. A force sensor 210 is provided on the vortex machine 208. The clutches 209 of the adjacent first dynamometer unit 2 and the adjacent second dynamometer unit 3 are connected by a synchronous belt 7 and a variable-wheelbase power transmission device. The clutch 209 is an electromagnetic clutch, and can control whether the first axis dynamometer unit is connected or disconnected with the second axis dynamometer unit 3, the third axis dynamometer unit 4, the fourth axis dynamometer unit 5 and the fifth axis dynamometer unit 6. The first and second lifting devices 206 and 207 are respectively located between the first and third main drums 202 and 204 and between the second and fourth main drums 203 and 205. The wheel base moving device and the pneumatic brake device are located below the frame 201. The wheel base moving device comprises a wheel base moving motor, a gear is mounted at the end of the power output end of the wheel base moving motor and drives the gear to rotate, a rack is mounted on a guide rail, and the rack and pinion motion can realize the forward and backward movement of the dynamometer unit of the first shaft. After the first shaft dynamometer unit 2 moves in place, the pneumatic brake device works to realize clamping brake and ensure that the dynamometer does not shake back and forth in the test process.
The second axis dynamometer unit 3, the third axis dynamometer unit 4, the fourth axis dynamometer unit 5, and the fifth axis dynamometer unit 6 have substantially the same structure as the first axis dynamometer unit 2. The difference lies in that the fourth shaft dynamometer unit 5 is connected with a back-dragging motor 8 and a drum rotating speed measuring encoder 9. The back-dragging motor 8 is connected with the fourth auxiliary roller, and the back-dragging motor 8 can be used for testing the internal loss of the dynamometer and the dynamometers of other shaft chassis by a sliding method. The drum speed measuring encoder 9 is connected with the vortex machine.
The five-axis chassis dynamometer in the embodiment is matched in work as follows:
a, starting a fourth axis dynamometer unit and a fifth axis dynamometer unit when a two-axis military vehicle (with the wheelbase of 2300-plus 2950 mm) is tested, wherein clutches on the two axes are combined, and clutches on other axes are disconnected;
and for a two-shaft military vehicle (the wheel base is 2950 and 4500 mm), starting the third shaft dynamometer unit and the fourth shaft dynamometer unit, combining the clutches on the two shafts, and disconnecting the clutches on the other shafts.
And b, for the test of the three-axis military vehicle (the distance between the first shaft and the second shaft is 3000-4500 mm, the distance between the second shaft and the third shaft is 1250-1500 mm), starting the second shaft dynamometer unit, the third shaft dynamometer unit and the fourth shaft dynamometer unit, and disconnecting the clutches on other dynamometers.
c, for the test of a four-axis military vehicle (the distance between a first axis and a second axis is 1800-2500 slowly, the distance between the second axis and a third axis is 3000-4000 mm, and the distance between the third axis and a fourth axis is 1250-1500 mm), starting a second axis dynamometer unit, a third axis dynamometer unit, a fourth axis dynamometer unit and a fifth axis dynamometer unit, and disconnecting clutches on other dynamometers.
And d, for testing a five-axis military vehicle (the distance between a first shaft and a second shaft is 1800-2500 slow, the distance between the second shaft and a third shaft is 3000-4500 mm, the distance between the third shaft and a fourth shaft is 1250-1500 mm, and the distance between the fourth shaft and the fifth shaft is 1250-1500 mm), starting the first shaft dynamometer unit, the second shaft dynamometer unit, the third shaft dynamometer unit, the fourth shaft dynamometer unit and the fifth shaft dynamometer unit, and combining all clutches.
Taking a military measurement test for two shafts as an example, after the position among the first shaft dynamometer unit, the second shaft dynamometer unit, the third shaft dynamometer unit, the fourth shaft dynamometer unit and the fifth shaft dynamometer unit is adjusted by the working of the wheel base moving device, the pneumatic brake is installed and locked at the position. The vehicle is driven onto a five-axis chassis dynamometer, wheels are positioned at the centers of a first main roller, a second main roller, a third auxiliary roller and a fourth auxiliary roller, a first lifting device 206 and a second lifting device fall down, a fourth shaft dynamometer unit and a fifth shaft dynamometer unit are started, clutches on the two shafts are combined, and clutches on other shafts are disconnected, so that the test can be started.
The five-axis automobile chassis dynamometer test system in the embodiment is produced according to the standard requirements of GB18285 (emission limit value and measurement method for automobile exhaust pollutants of ignition engines), GB3847 (emission limit value and measurement method for automobile exhaust smoke intensity of automobile compression ignition engines and compression ignition engines), JT/T445-2008 (automobile chassis dynamometer) and the like, and is customized according to the bidding technical requirements. The test device is suitable for various tests such as dynamic detection, oil consumption detection, emission detection and the like of two-axis, three-axis, four-axis and five-axis automobiles with the engine power not exceeding 800kw and the maximum single-axis total mass not exceeding 13000kg in ultrahigh and low temperature environments (20 ℃ to 35 ℃). The dynamometer adopts an eddy current machine type, five chassis dynamometers can change the wheel base, and the change range meets the requirements of the change range of the wheel base of four types of trains.
Claims (4)
1. The five-axis chassis dynamometer is characterized by comprising
The guide rails are arranged in parallel;
the first shaft dynamometer unit is arranged on the guide rail in a sliding mode; the first axle dynamometer unit comprises a rack, and a first main roller, a second main roller, a third auxiliary roller, a fourth auxiliary roller, a first lifting device, a second lifting device, a vortex machine, an axle distance moving device and a pneumatic brake device which are fixed on the rack, wherein the first main roller is connected with the second main roller, two ends of a connecting structure of the first main roller and the second main roller are connected with the vortex machine and a clutch, the third auxiliary roller is connected with the fourth auxiliary roller, and the first lifting device and the second lifting device are respectively positioned between the first main roller and the third auxiliary roller and between the second main roller and the fourth auxiliary roller;
the second shaft dynamometer unit is in the same structure as the first shaft dynamometer unit, is arranged on the guide rail in a sliding mode and is positioned on one side of the first shaft dynamometer unit, and is connected with a clutch on the first shaft dynamometer unit through a synchronous belt and a variable-wheel-base power transmission device;
the third shaft dynamometer unit is in the same structure as the first shaft dynamometer unit, is arranged on the guide rail in a sliding mode and is positioned on one side, away from the first shaft dynamometer unit, of the second shaft dynamometer unit, and is connected with a clutch on the second shaft dynamometer unit through a synchronous belt and a variable-wheelbase power transmission device;
the fourth shaft dynamometer unit is structurally characterized in that a back-dragging motor is further connected on the basis of the structure of the first shaft dynamometer unit, is arranged on the guide rail in a sliding mode and is positioned on one side, away from the second shaft dynamometer unit, of the third shaft dynamometer unit, the fourth shaft dynamometer unit is connected with a clutch on the third shaft dynamometer unit through a synchronous belt and a variable-axle-distance power transmission device, and the back-dragging motor is connected with the fourth auxiliary roller;
and the fifth dynamometer unit has the same structure as the first dynamometer unit and is arranged on the guide rail in a sliding manner, the fourth dynamometer unit is far away from one side of the third dynamometer unit, and the fifth dynamometer unit is connected with a clutch of the fourth dynamometer unit through a synchronous belt and a variable-wheelbase power transmission device.
2. The five-axis chassis dynamometer according to claim 1, wherein the wheel base moving device comprises a wheel base moving motor, a gear is mounted at the end of a power output end of the wheel base moving motor and drives the gear to rotate, and a rack matched with the gear is mounted on the guide rail.
3. The five-axis chassis dynamometer machine of claim 1, wherein force sensing is provided on the eddy current machine.
4. The five-axis chassis dynamometer as claimed in any one of claims 1-3, wherein a rotational speed measurement encoder is connected to the eddy current machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020248573.7U CN211205775U (en) | 2020-03-03 | 2020-03-03 | Five-axis chassis dynamometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020248573.7U CN211205775U (en) | 2020-03-03 | 2020-03-03 | Five-axis chassis dynamometer |
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| CN211205775U true CN211205775U (en) | 2020-08-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198288A (en) * | 2020-08-12 | 2021-01-08 | 石家庄华燕交通科技有限公司 | Mobile heavy vehicle exhaust emission detection system |
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2020
- 2020-03-03 CN CN202020248573.7U patent/CN211205775U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198288A (en) * | 2020-08-12 | 2021-01-08 | 石家庄华燕交通科技有限公司 | Mobile heavy vehicle exhaust emission detection system |
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