CN110823594A - Power assembly test bench - Google Patents
Power assembly test bench Download PDFInfo
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- CN110823594A CN110823594A CN201911043243.2A CN201911043243A CN110823594A CN 110823594 A CN110823594 A CN 110823594A CN 201911043243 A CN201911043243 A CN 201911043243A CN 110823594 A CN110823594 A CN 110823594A
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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
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Abstract
The invention discloses a power assembly test bench which comprises two transmission mechanisms, wherein each transmission mechanism is provided with an input shaft and an output shaft; the input shaft and the output shaft of the same transmission mechanism are in transmission connection; and the two groups of mounting supports are respectively used for fixing a power assembly to-be-tested piece, and two ends of a transmission shaft of the power assembly to-be-tested piece are respectively connected with input shafts or output shafts of the two transmission mechanisms through shaft system components. Compared with the mode that the test bench in the prior art uses the engine as the power source of the whole transmission system, the power assembly test bench can save two loading motors and corresponding motor variable-frequency driving systems, and a test piece to be tested of one power assembly can be used as a test-assistant power assembly during test, thereby greatly saving the production cost on the premise of not influencing the test efficiency and quality, and simultaneously testing the test pieces to be tested of the two power assemblies during the test time, and greatly improving the working efficiency.
Description
Technical Field
The invention relates to the technical field of automobile test racks, in particular to a power assembly test rack.
Background
The power assembly of the new energy automobile comprises a driving motor, a speed reducer, a suspension and a transmission shaft. The power assembly is used as a core component of a new energy automobile, the performance of the power assembly such as torque, noise and the like needs to be tested before the whole automobile is assembled, and the performance of the power assembly is mainly tested on a power assembly test bench at present. The existing power assembly test bench mainly comprises a bench system, an automatic control system, a data acquisition system, a bench auxiliary device and the like. The rack system mainly comprises a load motor, a torque sensor, a tested piece mounting support and the like, wherein the load motor can axially move to meet the requirements of mounting of different tested piece sizes.
Chinese utility model patent with publication number CN206470066U discloses an electric automobile power assembly test bench, include: a suspension mounting bracket for fixing the power assembly to be tested; the electric dynamometer is connected with the power assembly to be tested; the motor controller is connected with a driving motor of the power assembly to be tested; and the monitoring system is connected with the electric dynamometer and the motor controller. The electric dynamometer is connected with a torque output end of the power assembly to be tested, the rotating speed and the torque of the driving motor are continuously changed in the process of running of the driving motor in the power assembly to be tested, the load provided by the electric dynamometer is used for increasing the torque of the driving motor, the driving motor outputs the rotating speed and the torque in real time by using the internal sensing device and transmits the rotating speed and the torque to the monitoring system through the motor controller, and the monitoring system controls the electric dynamometer to keep the torque to stably work when the rotating speed and the torque of the driving motor are determined to reach the running state and be stable of the whole vehicle. The power assembly test bench is matched with a power assembly to be tested, so that the running state of the whole vehicle can be restored, the abnormal sound position of the power assembly in the running process of the whole vehicle is positioned and the fault is identified, the interference outside the power assembly can be eliminated, the power assembly test bench has higher resolution and inspection efficiency, and the system problem of the power assembly can be analyzed.
However, when the test bench for the power assembly of the electric vehicle is used for performing simulation test on the performance of the power assembly in the operation process, the driving motor and the corresponding variable frequency driving system need to be loaded at the two ends of the tested power assembly respectively, so that the cost of the test bench for the power assembly is increased.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the technical problems that a power assembly test bench needs to be additionally provided with a loading motor and is high in production cost in the prior art, so that the power assembly test bench is provided.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a powertrain test rack comprising:
two transmission mechanisms, each of the two transmission mechanisms having an input shaft and an output shaft; the input shaft and the output shaft of the same transmission mechanism are in transmission connection;
and the two groups of mounting supports are respectively used for fixing a power assembly to-be-tested piece, and two ends of a transmission shaft of the power assembly to-be-tested piece are respectively connected with input shafts or output shafts of the two transmission mechanisms through shaft system components.
Furthermore, the two transmission mechanisms are gear boxes, the two gear boxes are arranged oppositely, the input shafts and the output shafts of the gear boxes are parallel and are positioned on the same horizontal plane, and the transmission shaft of the test piece to be tested of the power assembly and the input shafts or the output shafts of the two gear boxes are positioned on the same horizontal straight line.
Further, the shafting component includes:
the torque sensor is connected with an input shaft or an output shaft of the gearbox;
and one end of the transmission half shaft is connected with the power assembly to-be-tested piece, and the other end of the transmission half shaft is connected with the torque sensor.
Further, the shafting component also comprises a coupling connected between the torque sensor and the transmission half shaft.
Further, the test bench still includes the test platform seat, be equipped with on the test platform seat a plurality of with the spout that the output shaft syntropy of gear box was arranged, two sets of the installing support is all installed on the spout.
Further, two the gear box is respectively through base fixed mounting on the test platform seat, install the sensor fixing base on the base, torque sensor installs on the sensor fixing base.
Further, the mounting support comprises a plurality of mounting seats matched with the suspension on the to-be-tested piece of the power assembly, and the mounting seats are all slidably mounted on the corresponding sliding grooves.
Further, the mount includes:
the bracket base is slidably mounted on the sliding groove;
the fixing column is connected with the bracket base and is internally provided with a longitudinally arranged mounting hole;
the lifting screw rod is longitudinally and movably arranged in the mounting hole, and is connected with a connecting seat matched with the suspension;
the adjusting nut is rotatably arranged at the top of the fixed column and is in threaded fit with the lifting screw rod;
and the adjusting handle is connected to the peripheral wall of the adjusting nut and extends outwards along the direction perpendicular to the axis of the adjusting nut.
Further, a damping base is arranged at the bottom of the support base in a cushioning mode.
Further, the test bench still includes the protection casing, two the gear box is located outside the protection casing, two between the gear box the power assembly treat the test piece with the shafting part all is located in the protection casing.
The technical scheme of the invention has the following advantages:
1. according to the power assembly test bench, before the test of the power assembly test piece is carried out, the two power assembly test pieces are respectively fixed on the two mounting brackets, and two ends of the transmission shafts of the two power assembly test pieces are respectively connected with the input shafts or the output shafts of the two transmission mechanisms through the shaft system component; during testing, one power assembly to be tested is used as a test accompanying power assembly, the other power assembly to be tested is used as a tested power assembly, the test accompanying power assembly simulates wheels to provide load, the rotating speed and the torque of a driving motor of the tested power assembly are continuously changed in the movement process of the driving motor, the load provided by the test accompanying power assembly increases the torque of the driving motor of the tested power assembly, the driving motor of the tested power assembly outputs the rotating speed and the torque, and the rotating speed and the torque are transmitted to a monitoring system through a driving motor controller, and the monitoring system controls the test accompanying power assembly to keep stable torque operation when the rotating speed and the torque of the driving motor of the tested power assembly are determined to reach the running state of the whole vehicle and are stable, so that the test of the running parameters of the tested power assembly is realized; similarly, the tested power assembly is used for simulating wheels to provide load for increasing torque of a driving motor of the power assembly to be tested, so that the running parameters of the power assembly to be tested can be tested; compared with the mode that the test bench in the prior art uses the engine as the power source of the whole transmission system, the power assembly test bench can save two loading motors and corresponding motor variable-frequency driving systems, and a test piece to be tested of one power assembly can be used as a test-assistant power assembly during test, thereby greatly saving the production cost on the premise of not influencing the test efficiency and quality, and simultaneously testing the test pieces to be tested of the two power assemblies during the test time, and greatly improving the working efficiency.
2. According to the power assembly test bench, the torque sensors are respectively arranged between the two output ends of the power assembly test piece and the gear box, power distribution and power consumption of the two ends of the transmission shaft of the power assembly test piece can be measured during testing, test working conditions can be conveniently switched, and actual working conditions are truly reflected.
3. According to the power assembly test bench provided by the invention, the two power assembly test pieces and the two gear boxes are arranged on the same test platform seat, and the power assembly test bench has the advantages of simple structure and high compactness.
4. According to the power assembly test bench provided by the invention, the structural design that the position and the height of the mounting bracket on the test platform seat are adjustable can adapt to the adaptability of the test bench to different power assembly test pieces.
5. According to the power assembly test bench provided by the invention, the protective cover is arranged on the rotating part of the test bench, so that the safety of the test bench in the test process can be ensured, and the noise generated in the rotating process of the rotating part can be isolated.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a top view of a powertrain test rig provided in an embodiment of the present invention;
FIG. 2 is a front view of a powertrain test stand provided by an embodiment of the present invention;
FIG. 3 is a front view of one of the first mounts of the first mounting bracket in an embodiment of the invention with portions broken away to show internal construction;
fig. 4 is a right side view of the first bracket of fig. 3.
Description of reference numerals: 1. a test platform base; 11. a chute; 2. a gear case; 3. mounting a bracket; 31. a mounting seat; 311. a bracket base; 312. fixing a column; 313. a lifting screw rod; 314. adjusting the nut; 315. an adjusting handle; 316. a connecting seat; 317. a locking structure; 4. a power assembly to-be-tested piece; 41. a drive shaft; 42. suspension; 5. a shafting member; 51. a torque sensor; 52. a drive half shaft; 53. a coupling; 6. a base; 7. a sensor holder; 8. shock mount.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
A powertrain test bench as shown in fig. 1 and fig. 2 comprises a test platform base 1, two transmission mechanisms mounted on the test platform base 1, and two sets of mounting brackets 3. The two transmission mechanisms are provided with input shafts and output shafts, and the input shafts and the output shafts of the same transmission mechanism are in transmission connection; the two groups of mounting brackets 3 are respectively used for fixing two power assembly to-be-tested pieces 4, and two ends of a transmission shaft 41 of each power assembly to-be-tested piece 4 are respectively connected with input shafts or output shafts of the two transmission mechanisms through a shaft system component 5.
Before testing of the power assembly test pieces 4, fixing the two power assembly test pieces 4 on the two mounting brackets 3 respectively, and connecting two ends of transmission shafts 41 of the two power assembly test pieces 4 with input shafts or output shafts of the two transmission mechanisms through shaft system components 5 respectively; during testing, one power assembly to-be-tested 4 is used as a test accompanying power assembly, the other power assembly to-be-tested 4 is used as a tested power assembly, the test accompanying power assembly simulates wheels to provide load, the rotating speed and the torque of a driving motor of the tested power assembly are constantly changed in the movement process of the driving motor of the tested power assembly, the load provided by the test accompanying power assembly increases the torque of the driving motor of the tested power assembly, the driving motor of the tested power assembly outputs the rotating speed and the torque, the rotating speed and the torque are transmitted to a monitoring system through a driving motor controller, and the monitoring system controls the test accompanying power assembly to keep stable torque when the rotating speed and the torque of the driving motor of the tested power assembly are determined to reach the running state of the whole vehicle and be stable, so that the test of the running parameters of the tested power assembly is realized; similarly, the tested power assembly is used for simulating wheels to provide load for increasing torque of a driving motor of the power assembly to be tested, so that the running parameters of the power assembly to be tested can be tested; compared with the mode that the test bench in the prior art uses an engine as a power source of the whole transmission system, the power assembly test bench can save two loading motors and corresponding motor variable-frequency driving systems, and can use one power assembly to-be-tested piece 4 as a test-assistant power assembly during testing, thereby greatly saving the production cost on the premise of not influencing the testing efficiency and quality, and simultaneously testing the two power assemblies to-be-tested pieces 4 in the testing time, and greatly improving the working efficiency.
In this embodiment, two drive mechanisms are gear boxes 2, and two gear boxes 2 are arranged relatively, and two sets of mounting brackets 3 are located on the test platform base 1 between two gear boxes 2. The input shafts and the output shafts of the gear boxes 2 are parallel and are positioned on the same horizontal plane, and the transmission shaft 41 of the power assembly test piece 4 and the input shafts or the output shafts of the two gear boxes 2 are positioned on the same horizontal straight line. In other embodiments, the transmission mechanism may also be another gear set or another transmission mechanism that can be respectively connected to two ends of the transmission shaft 41 of the two test pieces 4 to be tested, and it is only necessary that power transmission can be performed between the two test pieces 4 to be tested.
In the present embodiment, the shafting component 5 includes a torque sensor 51 and a transmission half shaft 52, the torque sensor 51 is connected with the input shaft or the output shaft of the gear box 2; the transmission half shaft 52 is a vehicle half shaft matched with the power assembly to-be-tested piece 4, one end of the transmission half shaft 52 is connected with the power assembly to-be-tested piece 4, and the other end of the transmission half shaft 52 is connected with the torque sensor 51. The torque sensors 51 are respectively arranged on the shafting parts 5 at the two ends of the transmission shaft 41 of the test piece 4 to be tested of the power assembly, and during testing, the torque sensors 51 can simultaneously measure the power distribution and the power consumption at the two ends of the transmission shaft 41 of the test piece 4 to be tested of the power assembly, so that the test working conditions can be conveniently switched, and the actual working condition can be truly reflected.
Specifically, the shafting member 5 further includes a coupling 53 connected between the torque sensor 51 and the drive axle shaft 52.
In this embodiment, test platform seat 1 is a monoblock big platform seat, is equipped with a plurality of spouts 11 of arranging with the output shaft syntropy of gear box 2 on the test platform seat 1, and two sets of installing supports 3 are all installed on spout 11. The mounting mode that the mounting bracket 3 is mounted on the sliding groove 11 of the test platform seat 1 has simple structure and high compactness; and conveniently adjust the horizontal installation position of installing support 3 to the power assembly that adapts to different models size treats the fixed mounting of test piece 4. In other embodiments, the test platform base 1 may also be composed of a plurality of platform bases, two gear boxes 2 are respectively installed on the platform bases located at two sides, and the two gear boxes are installed on the platform base located in the middle between the two gear boxes; similarly, the platform base located in the middle also needs to be provided with a sliding groove 11 for the adjustable installation of the two sets of installation brackets 3.
In this embodiment, two gear boxes 2 are respectively through base 6 fixed mounting on test platform seat 1, install sensor fixing base 7 on the base 6, and torque sensor 51 installs on sensor fixing base 7. The torque sensor 51 is installed on the base 6 through the sensor fixing seat 7, so that the stability is higher, and the accuracy of the measurement result of the torque sensor 51 can be improved.
In this embodiment, the mounting bracket 3 includes four mounting seats 31 matched with the suspension 42 on the power assembly to-be-tested piece 4, the four mounting seats 31 are all slidably mounted on the corresponding sliding grooves 11, and the heights of the four mounting seats 31 in the vertical direction are adjustable, so as to improve the applicability of the mounting bracket 3 to different types of power assembly to-be-tested pieces 4. It should be understood here that the number of mounting seats 31 is adaptively selectable according to the number of suspensions 42 on the locomotion assembly test piece 4.
As shown in fig. 3 and 4, in particular, the mounting seat 31 includes a bracket base 311, a fixing column 312, a lifting screw 313, an adjusting nut 314 and an adjusting handle 315. Wherein, the bracket base 311 is slidably mounted on the chute 11; the fixing column 312 is fixedly connected above the bracket base 311, and a mounting hole which is longitudinally arranged is arranged in the fixing column; the lifting screw rod 313 is longitudinally and movably arranged in the mounting hole, and is fixedly connected with a connecting seat 316 which is used for being matched with the suspension 42 of the test piece 4 to be tested of the power assembly; the adjusting nut 314 is rotatably mounted at the top of the fixed column 312 and is in threaded fit with the lifting screw rod 313; the adjustment handle 315 is attached to the outer peripheral wall of the adjustment nut 314 and extends outward in a direction perpendicular to the axis of the adjustment nut 314. The lifting screw rod 313 can be driven to do lifting movement in the vertical direction in the mounting hole of the fixed column 312 by rotating the adjusting handle 315, and the lifting mechanism is simple in structure and easy to operate. It should be understood that the present embodiment only shows one specific embodiment in which the height of the mounting seat 31 is adjustable, and other ways in which the height of the mounting seat 31 can be adjusted are within the scope of the present application.
In this embodiment, the bottom pad of the bracket base 311 is provided with a damper base 6. The support base 311 is installed on the test platform base 1 through the vibration damping base 6, and can play a role in buffering and noise reduction.
In this embodiment, a protective cover (not shown) is further installed on the testing platform base 1, the two gear boxes 2 are located outside the protective cover, and the two power assembly to-be-tested pieces 4 and the shafting component 5 between the two gear boxes 2 are located in the protective cover. The setting of protection casing not only can guarantee the security among the test bench test procedure, can also keep apart the noise that rotating part rotates the in-process and produces among the axis part.
In summary, in the power assembly test bench provided in the embodiment of the present invention, before the test of the to-be-tested piece 4 of the power assembly is performed, the to-be-tested piece 4 of the power assembly is respectively fixed on the two mounting brackets 3, and two ends of the transmission shaft 41 of the to-be-tested piece 4 of the power assembly are respectively connected to the input shaft or the output shaft of the two transmission mechanisms through the shaft system component 5; during testing, one power assembly to-be-tested 4 is used as a test accompanying power assembly, the other power assembly to-be-tested 4 is used as a tested power assembly, the test accompanying power assembly simulates wheels to provide load, the rotating speed and the torque of a driving motor of the tested power assembly are constantly changed in the movement process of the driving motor of the tested power assembly, the load provided by the test accompanying power assembly increases the torque of the driving motor of the tested power assembly, the driving motor of the tested power assembly outputs the rotating speed and the torque, the rotating speed and the torque are transmitted to a monitoring system through a driving motor controller, and the monitoring system controls the test accompanying power assembly to keep stable torque when the rotating speed and the torque of the driving motor of the tested power assembly are determined to reach the running state of the whole vehicle and be stable, so that the test of the running parameters of the tested power assembly is realized; similarly, the tested power assembly is used for simulating wheels to provide load for increasing torque of a driving motor of the power assembly to be tested, so that the running parameters of the power assembly to be tested can be tested; compared with the mode that the test bench in the prior art uses an engine as a power source of the whole transmission system, the power assembly test bench can save two loading motors and corresponding motor variable-frequency driving systems, and can use one power assembly to-be-tested piece 4 as a test-assistant power assembly during testing, thereby greatly saving the production cost on the premise of not influencing the testing efficiency and quality, and simultaneously testing the two power assemblies to-be-tested pieces 4 in the testing time, and greatly improving the working efficiency.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A powertrain test rig, comprising:
two transmission mechanisms, each of the two transmission mechanisms having an input shaft and an output shaft; the input shaft and the output shaft of the same transmission mechanism are in transmission connection;
and the two groups of mounting brackets (3) are respectively used for fixing a power assembly to-be-tested piece (4), and two ends of a transmission shaft (41) of the power assembly to-be-tested piece (4) are respectively connected with input shafts or output shafts of the two transmission mechanisms through a shafting component (5).
2. The powertrain testing bench according to claim 1, characterized in that the two transmission mechanisms are gear boxes (2), the two gear boxes (2) are arranged oppositely, the input shafts and the output shafts of the gear boxes (2) are parallel and on the same horizontal plane, and the transmission shaft (41) of the powertrain test piece (4) and the input shafts or the output shafts of the two gear boxes (2) are on the same horizontal straight line.
3. The powertrain test rig of claim 2, wherein the shafting component (5) comprises:
a torque sensor (51) connected to an input shaft or an output shaft of the gearbox (2);
and one end of the transmission half shaft (52) is connected with the power assembly to-be-tested piece (4), and the other end of the transmission half shaft is connected with the torque sensor (51).
4. The powertrain testing stand of claim 3, characterized in that the shafting component (5) further comprises a coupling (53) connected between the torque sensor (51) and the drive axle shaft (52).
5. The powertrain testing bench of claim 3, characterized in that the testing bench further comprises a testing platform base (1), the testing platform base (1) is provided with a plurality of sliding grooves (11) which are arranged in the same direction as the output shaft of the gear box (2), and the two sets of mounting brackets (3) are mounted on the sliding grooves (11).
6. The powertrain testing bench of claim 5, characterized in that, two gear boxes (2) are respectively fixedly mounted on the testing platform base (1) through a base (6), a sensor fixing base (7) is mounted on the base (6), and the torque sensor (51) is mounted on the sensor fixing base (7).
7. The powertrain testing bench of claim 5, characterized in that the mounting bracket (3) comprises a number of mounting seats (31) matching with the suspension (42) on the powertrain test piece (4), each of the number of mounting seats (31) being slidably mounted on the corresponding chute (11).
8. The locomotion assembly test rig of claim 7, wherein the mount (31) comprises:
the bracket base (311) is slidably mounted on the sliding groove (11);
the fixing column (312) is connected to the bracket base (311) and is internally provided with a longitudinally arranged mounting hole;
the lifting screw rod (313) is longitudinally and movably arranged in the mounting hole, and is connected with a connecting seat (316) matched with the suspension (42);
the adjusting nut (314) is rotatably arranged at the top of the fixed column (312) and is in threaded fit with the lifting screw rod (313);
and an adjusting handle (315) connected to the outer peripheral wall of the adjusting nut (314) and extending outward in a direction perpendicular to the axis of the adjusting nut (314).
9. The locomotion assembly test rig of claim 8, wherein the bottom pad of the cradle base (311) is provided with a shock mount (6).
10. The powertrain test rig according to claim 5, characterized in that the test rig further comprises a protective cover, two of the gear boxes (2) are located outside the protective cover, and two of the powertrain test piece (4) and the shafting component (5) between the two gear boxes (2) are located inside the protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043243.2A CN110823594A (en) | 2019-10-30 | 2019-10-30 | Power assembly test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043243.2A CN110823594A (en) | 2019-10-30 | 2019-10-30 | Power assembly test bench |
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| Publication Number | Publication Date |
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| CN110823594A true CN110823594A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911043243.2A Pending CN110823594A (en) | 2019-10-30 | 2019-10-30 | Power assembly test bench |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380698A (en) * | 2020-03-06 | 2020-07-07 | 浙江零跑科技有限公司 | Be used for new energy automobile to drive power assembly to dragging test bench structure |
| CN113529809A (en) * | 2021-08-18 | 2021-10-22 | 一汽解放汽车有限公司 | Vibration isolation civil engineering construction method and assembly test experiment table |
| CN113588284A (en) * | 2021-07-05 | 2021-11-02 | 中汽研汽车检验中心（天津）有限公司 | To holding in palm durable test bench to new forms of energy electricity drive assembly |
| CN114705932A (en) * | 2022-03-24 | 2022-07-05 | 苏州信科检测技术有限公司 | EMC on-load testing device |
-
2019
- 2019-10-30 CN CN201911043243.2A patent/CN110823594A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380698A (en) * | 2020-03-06 | 2020-07-07 | 浙江零跑科技有限公司 | Be used for new energy automobile to drive power assembly to dragging test bench structure |
| CN111380698B (en) * | 2020-03-06 | 2022-04-01 | 浙江零跑科技股份有限公司 | Be used for new energy automobile to drive power assembly to dragging test bench structure |
| CN113588284A (en) * | 2021-07-05 | 2021-11-02 | 中汽研汽车检验中心（天津）有限公司 | To holding in palm durable test bench to new forms of energy electricity drive assembly |
| CN113529809A (en) * | 2021-08-18 | 2021-10-22 | 一汽解放汽车有限公司 | Vibration isolation civil engineering construction method and assembly test experiment table |
| CN114705932A (en) * | 2022-03-24 | 2022-07-05 | 苏州信科检测技术有限公司 | EMC on-load testing device |
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