CN218002909U

CN218002909U - NVH detection rack of electric vehicle bridge speed reducer

Info

Publication number: CN218002909U
Application number: CN202221796914.XU
Authority: CN
Inventors: 全兴仪; 张进峰; 杨连发; 孙斌; 干金明
Original assignee: Dongfeng Dana Axle Co Ltd
Current assignee: Dongfeng Dana Axle Co Ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-12-09
Anticipated expiration: 2032-07-11

Abstract

The utility model relates to an NVH detection rack of a trolley bridge speed reducer, which comprises a machine table, a central turntable module and a detection loading module; the central turntable module comprises a turntable, a fixing clamp and a motor controller, the turntable is rotatably connected to the upper end of a machine table, the upper end of the machine table is provided with a feeding station and a detection station which are positioned at two sides of the center of the turntable, the turntable is provided with two mounting positions which are positioned at two sides of the center of the turntable, each mounting position is provided with the fixing clamp for fixing a speed reducer to be detected and a motor assembly, and the motor controller is detachably and electrically connected with the speed reducer fixed on the fixing clamp and a motor of the motor assembly; the detection loading module comprises two loading assemblies, the two loading assemblies are respectively located on two opposite sides of a detection station, the integrated NVH detection of the reducer with the motor assembly is realized by the rack, the motor of the reducer and the motor assembly is adopted for detection, the tool motor does not need to be additionally prepared for driving, and the actual assembly condition can be reflected.

Description

NVH detection rack of electric vehicle bridge speed reducer

Technical Field

The utility model relates to an automobile manufacturing check out test set technical field, concretely relates to trolley-bus bridge reduction gear NVH testing stand.

Background

The NVH diagnosis is carried out on the speed reducer in the conventional speed reducer manufacturing field through a total running-in reducing test and in an artificial auscultation mode, and the process is influenced by the proficiency of operators and wastes working hours. At present, new energy automobiles develop quickly, and a detection solution for a new energy reducer with a motor assembly is lacked.

SUMMERY OF THE UTILITY MODEL

Based on the above expression, the utility model provides an electric bridge reduction gear NVH detects rack to it is big that reduction gear and motor assembly NVH diagnosis receive operating personnel proficiency to influence, the long technical problem of check-out time among the solution prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a NVH detection rack for a trolley bridge speed reducer comprises a machine table, a central turntable module and a detection loading module;

the central turntable module comprises a turntable, a fixing clamp and a motor controller, the turntable is rotatably connected to the upper end of the machine table, the upper end of the machine table is provided with a feeding station and a detection station which are positioned at two sides of the center of the turntable, the turntable is provided with two mounting positions which are positioned at two sides of the center of the turntable, each mounting position is provided with the fixing clamp for fixing a speed reducer to be detected and a motor assembly, and the motor controller is detachably and electrically connected with the speed reducer fixed on the fixing clamp and a motor of the motor assembly;

the detection loading module comprises two loading components, and the two loading components are respectively positioned on two opposite sides of the detection station and used for loading the load torque of the speed reducer and the motor assembly.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

the application provides a detect rack, rotate through the carousel and realize when one in two installation positions corresponds with the material loading station, another just corresponds with the detection station, can be when detecting the station detection at material loading station on-line reduction gear and motor assembly, the waste of man-hour has been avoided, during the detection, motor through among motor controller control speed reducer and the motor assembly, it is adjustable to realize the moment of torsion, this rack has realized the integrated NVH of the electrified motor assembly of reduction gear and has detected, detect when realizing speed reducer and motor, the motor of adopting speed reducer and motor assembly itself detects, need not additionally to prepare the frock motor and drive, more can reflect the actual assembly condition.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, each the loading subassembly includes slide mechanism and moment of torsion loading mechanism, slide mechanism is used for driving moment of torsion loading mechanism is to keeping away from or being close to the one side motion of detection station, two moment of torsion loading mechanism connects the half shell spline of differential mechanism's both sides respectively.

Further, slide mechanism includes guide rail, slip table and driving piece, the guide rail connect in the board upper end, slip table slidable connect in on the guide rail, the driving piece is used for the drive the slip table slides, torque loading mechanism install in on the slip table.

Further, moment of torsion load mechanism includes load motor and spline connection sleeve, inside the spline connection sleeve have with half shell spline matched with tooth's socket, load motor with spline connection sleeve drive is connected for the drive spline connection sleeve rotates, works as load motor does not drive spline connection sleeve rotates, but spline connection sleeve free rotation.

Furthermore, the detection rack further comprises a plurality of vibration acceleration sensors, and the vibration acceleration sensors can be fixed on the bearing positions of the speed reducer and the motor of the motor assembly.

Drawings

Fig. 1 is a schematic perspective view of an NVH detection rack of a trolley bridge speed reducer provided by an embodiment of the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1;

fig. 3 is a schematic structural diagram of the left loading assembly in fig. 1.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that spatial relationship terms, such as "below … …", "below … …", "below … …", "above … …", "above", and the like, may be used herein to describe the relationship of one element or feature to another element or feature shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "below … …" and "below … …" may include both an upper and a lower orientation. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have transmission of electrical signals or data therebetween.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

As shown in fig. 1 to 3, the present application provides a trolley bridge speed reducer NVH detection bench, which includes a machine table 1, a central turntable module 2 and a detection loading module.

The machine table 1 is used as a bearing main body of the whole detection bench.

The central turntable module 2 comprises a turntable 21, a fixing clamp 22 and a motor controller 23, the turntable 21 is rotatably connected to the upper end of the machine table 1, the upper end of the machine table 1 is provided with a feeding tool 1a and a detection station 1b which are positioned at two sides of the center of the turntable 21, the turntable 21 is provided with two installation positions which are positioned at two sides of the center of the turntable 21, each installation position is provided with the fixing clamp 22 for fixing a speed reducer and a motor assembly to be detected, and the motor controller 23 is detachably connected with a motor 201 which is fixed on the speed reducer of the fixing clamp 22 and the motor assembly 200.

In this embodiment, the three-phase line connection of the driving motor to the motor controller 23 is realized by manual operation, and a plurality of vibration acceleration sensors are fixed at the bearing positions of the speed reducer and the motor, so that the early assembly work of the detection of the speed reducer and motor assembly 200 is realized.

The detection loading module comprises two loading components 3 which are respectively positioned at two opposite sides of the detection station 1b and used for loading the load torque of the speed reducer and motor assembly 200.

In this embodiment, each loading subassembly 3 includes slide mechanism 31 and moment of torsion loading mechanism 32, slide mechanism 31 is used for driving moment of torsion loading mechanism 32 is to keeping away from or being close to one side motion of detection station, two moment of torsion loading mechanism 32 connects the half shell spline 202 of the both sides of differential respectively, and is specific, half shell spline 202 includes differential left shell spline and differential right side shell spline.

The sliding mechanism 31 includes a guide rail 311, a sliding table 312 and a driving element 313, the guide rail 311 is connected to the upper end of the machine table 1, the sliding table 312 is slidably connected to the guide rail 311, the driving element 313 is used for driving the sliding table 312 to slide, and the torque loading mechanism 32 is installed on the sliding table 312.

In this embodiment, the driving element 313 is preferably a displacement structure formed by a screw motor and a nut pair, and the rotation of the screw motor drives the nut pair to axially translate on the screw, so that the sliding table 312 is connected with the nut, and the sliding of the sliding table is further achieved.

Wherein, moment of torsion loading mechanism 32 includes load motor 321 and spline connection sleeve 322, inside the spline connection sleeve 322 have with half shell spline 202 matched with tooth's socket, load motor 321 with spline connection sleeve 322 drive connection is used for the drive spline connection sleeve 322 rotates, works as load motor 321 does not drive when spline connection sleeve 322 rotates, but spline connection sleeve 322 free rotation.

After the speed reducer and motor assembly 200 is assembled in place, the turntable 21 rotates to enable the speed reducer and motor assembly 200 to rotate to a detection station, at the moment, the sliding table 312 moves to enable the spline connecting sleeves 322 on the two sides to be in butt joint with the corresponding half-shell splines 202, and then the motor controller achieves rotation control of the motor according to a preset detection program to achieve adjustment of load torque.

In the actual detection operation, the motor controller controls the rotating speed and the torque of the reducer motor through frequency conversion, and controls the rotating speed and the torque of the motor on the load side at the same time, so as to simulate the acceleration, the constant speed and the deceleration operation of the assembly in the actual working condition, and it can be understood that in the acceleration and the constant speed simulation process, the load motor 321 does not drive the spline connection sleeve 322 to rotate, the half-shell spline 202 can rotate freely at the moment to realize the detection, in the deceleration operation detection or the braking detection, the load motor 321 drives the spline connection sleeve 322 to deflect to apply the torque to the half-shell spline 202, so as to more accurately simulate the tooth back stress condition of the half-shell spline 202 in the braking, and the vibration data of the bearing positions of the reducer and the motor assembly are collected through a vibration accelerator sensor to realize the collection of the detection data; furthermore, in practical use, data acquisition is completed, a frequency domain/time domain graph is drawn on the speed reducer and the motor bearing by computer data analysis software, an assembly is firstly distinguished by experienced operators in the acquisition process, unqualified and qualified data are subjected to self-learning by the software, and when the data reach a certain amount, the software establishes a judgment standard by long-term self-learning, and the equipment self-completes a diagnosis function.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A NVH detection rack for a trolley bridge speed reducer is characterized by comprising a machine table, a central turntable module and a detection loading module;

the detection loading module comprises two loading components, and the two loading components are respectively positioned on two opposite sides of the detection station and are used for loading the load torque of the speed reducer and the motor assembly.

2. The NVH detection rack of the trolley bridge retarder according to claim 1, wherein each loading assembly comprises a sliding mechanism and a torque loading mechanism, the sliding mechanism is used for driving the torque loading mechanism to move to a side far away from or close to the detection station, and the two torque loading mechanisms are respectively connected with half shell splines on two sides of the differential.

3. The NVH detection rack of the electric bridge speed reducer according to claim 2, wherein the sliding mechanism comprises a guide rail, a sliding table and a driving part, the guide rail is connected to the upper end of the machine table, the sliding table is slidably connected to the guide rail, the driving part is used for driving the sliding table to slide, and the torque loading mechanism is installed on the sliding table.

4. The NVH detection gantry of claim 2, wherein the torque loading mechanism comprises a load motor and a splined sleeve, the splined sleeve having a spline groove therein for engaging a half-shell spline, the load motor being drivingly coupled to the splined sleeve for driving the splined sleeve to rotate, the splined sleeve being freely rotatable when the load motor does not drive the splined sleeve to rotate.

5. The trolley bridge retarder NVH detection bench of claim 2, further comprising a plurality of vibration acceleration sensors that can be fixed to the retarder bearing and motor bearing locations of the retarder and motor assembly.