CN112557011B - Deformation amount testing device - Google Patents
Deformation amount testing device Download PDFInfo
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- CN112557011B CN112557011B CN202011427076.4A CN202011427076A CN112557011B CN 112557011 B CN112557011 B CN 112557011B CN 202011427076 A CN202011427076 A CN 202011427076A CN 112557011 B CN112557011 B CN 112557011B
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- Prior art keywords
- force
- assembly
- force application
- sensor assembly
- force sensor
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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
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a deformation testing device which comprises a base frame, a force application mechanism and a force application mechanism, wherein the base frame is used for fixing a gearbox, the force application mechanism comprises a force application shaft assembly, a force sensor assembly and a displacement sensor assembly, one end of the force application shaft assembly is used for penetrating through a bearing seat of the gearbox, the other end of the force application shaft assembly is used for extending out of a shell of the gearbox and connecting the shell with the force sensor assembly, the force sensor assembly is used for detecting the force application size of the force application mechanism, the displacement sensor assembly is connected with the position, close to the bearing seat, of the force application shaft assembly, and the displacement sensor assembly is used for detecting the displacement change of the position, close to the bearing seat, of the force application shaft assembly. The invention verifies the accuracy of the simulation test result through an actual test and improves the test speed.
Description
Technical Field
The invention relates to the technical field of gearbox tests, in particular to a deformation testing device.
Background
In the development and design process of the gearbox, the simulation support of CAE (computer numerical simulation) is not required, the CAE abstracts a mathematical model from the real engineering problem, and the model is dispersed and is under a proper working condition by using a finite element method so as to simulate analysis and test, so that the test cost can be greatly reduced, and the test speed can be improved. However, for some complex mechanisms, the accuracy of the CAE simulation result is still to be verified. The invention relates to a tool for verifying the accuracy of a simulation result of the deformation of a bearing seat of a gearbox shell, and ensuring the consistency of simulation input and actual measurement input conditions and the consistency of comparison results. The test tool needs to ensure the accuracy of the test result.
The existing testing tool is a gearbox complete machine test, a gearbox is horizontally fixed on a rack, relevant torque is input according to the actual working condition of the gearbox, holes are formed in the corresponding position of a bearing seat of a shell, deformation which cannot be eliminated exists, the deformation directly influences a testing result, and the simulation precision is difficult to achieve.
Disclosure of Invention
The invention mainly aims to provide a deformation testing device, and aims to solve the problem that the accuracy of a CAE simulation result in the prior art is not high.
In order to achieve the above object, the present invention provides a deformation amount testing apparatus, including:
a base frame for securing a transmission case;
a force application mechanism;
the forced mechanism, the forced mechanism includes forced axle subassembly, force sensor subassembly and displacement sensor subassembly, the one end of forced axle subassembly is used for passing the bearing frame of gearbox, the other end of forced axle subassembly is used for stretching out the casing of gearbox with the force sensor subassembly is connected, the force sensor subassembly is used for detecting force application mechanism's application of force size, the displacement sensor subassembly with the forced axle subassembly is close to the position department of bearing frame is connected, the displacement sensor subassembly is used for detecting the forced axle subassembly is close to the displacement change of the position department of bearing frame.
Preferably, the force application mechanism comprises a bracket assembly and a force application member fixed to the bracket assembly, the bracket assembly is fixedly connected to the base frame, and the force application member is arranged corresponding to the force sensor assembly and is used for applying force to the force sensor assembly.
Preferably, the bracket assembly comprises a supporting frame and a supporting seat which are connected with each other, the supporting frame is fixedly connected with the base frame, and the force application member is fixedly connected with the supporting seat.
Preferably, the force applying member is a hydraulic jack.
Preferably, the stressed shaft assembly comprises a connecting piece and a stressed shaft, one end of the stressed shaft penetrates through a bearing seat of the gearbox, the other end of the stressed shaft extends out of the gearbox shell, a through hole is formed in one end of the stressed shaft extending out of the gearbox shell, and the connecting piece penetrates through the through hole to be connected with the force sensor assembly.
Preferably, the displacement sensor assembly comprises a first displacement sensor disposed proximate an upper end of the bearing housing.
Preferably, the displacement sensor assembly further comprises a second displacement sensor disposed proximate a lower end of the bearing housing.
Preferably, the force sensor assembly includes a force sensor body disposed on a side of the force receiving shaft opposite to the force application mechanism and fixedly connected to the connecting member, and a force sensor connection pad disposed on a side of the force sensor body opposite to the force application mechanism and fixedly connected to the force sensor.
Preferably, the force-bearing mechanism further comprises a cover, and the cover is respectively connected with the force-bearing shaft, the force sensor body and the sensor connecting disc.
Preferably, the base frame comprises an iron floor and a base, the base is fixedly connected with the iron floor, the force application mechanism is fixedly connected with the iron floor, and the force application mechanism is fixedly connected with the base.
In the technical scheme of the invention, the deformation testing device comprises a base frame, a force application mechanism and a stress mechanism, wherein the stress mechanism comprises a stress shaft assembly, a force sensor assembly and a displacement sensor assembly. The force application mechanism has a certain telescopic amount and can provide a certain thrust, the force sensor assembly can detect the magnitude of the thrust provided by the force application mechanism, test results obtained by the force application mechanism under different acting forces can be tested, and test data under the action of different acting forces can be obtained. Provide thrust through application of force mechanism, thrust is conducted to the atress axle subassembly from force transducer subassembly and is made the atress axle subassembly along the displacement of the direction of the thrust that receives to make the bearing frame of transmission casing take place certain deformation, can detect the distance of atress axle subassembly displacement through displacement sensor, thereby reachs the deflection of transmission casing bearing frame. And the obtained experimental data is recorded, so that the accuracy of the test is improved, the accuracy of the simulation test result is verified through the actual test, and the test speed is improved.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is a schematic structural view of an unassembled transmission housing according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
10 | |
| 11 | |
2 | Force applying machineStructure of the |
| 20 | |
200 | |
| 201 | |
21 | |
| 3 | |
30 | Stressed |
| 300 | |
301 | |
| 31 | |
310 | |
| 311 | Force |
32 | |
| 320 | |
321 | |
| 33 | |
4 | Bearing seat |
| 5 | |
40 | Upper bearing seat |
| 41 | Lower end bearing seat |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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. 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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Please refer to fig. 1 to 3.
The invention provides a deformation testing device, aiming at verifying the accuracy of a simulation result of the deformation of a bearing seat of a gearbox shell.
The deformation testing device comprises a base frame 1, a force application mechanism 2 and a force application mechanism 3, wherein the base frame 1 is used for fixing a shell 5 of a gearbox, the force application mechanism 3 comprises a force application shaft assembly 30, a force sensor assembly 31 and a displacement sensor assembly 32, one end of the force application shaft assembly 30 is used for penetrating through a bearing seat 4 of the gearbox, the other end of the force application shaft assembly 30 is used for extending out of the shell 5 of the gearbox and being connected with the force sensor assembly 31, the force sensor assembly 31 is used for detecting the force application size of the force application mechanism 2, the displacement sensor assembly 32 is connected with the position, close to the bearing seat 4, of the force application shaft assembly 30, and the displacement sensor assembly 32 is used for detecting the displacement change of the position, close to the bearing seat 4, of the force application shaft assembly 30. The base frame 1 is provided with a plurality of bolt holes which can be matched with gearbox shells 5 of different models, the gearbox shells 5 are fixed on the base frame 1 through bolt connection, the stress mechanism 3 comprises a stress shaft assembly 30, the gearbox shells 5 are provided with bearing seats 4, each bearing seat 4 comprises an upper end bearing seat 40 and a lower end bearing seat 41, one end of the stress shaft assembly 30 passes through the lower end bearing seat 41 from the upper end bearing seat 40 to be abutted against the base frame 1 or be close to the base frame 1, the stress shaft assembly 30 is in clearance fit with the upper end bearing seats 40 and the lower end bearing seats 41, the other end of the stress shaft assembly 30 extends out of the bearing seats 4 of the gearbox shells 5 and is connected with the force sensor assembly 31, the force application mechanism 2 has certain expansion and contraction amount and can provide certain thrust, the force sensor assembly 31 can detect the thrust amount provided by the force application mechanism 2, and can test results obtained by the force application mechanism 2 under different acting forces, and obtaining test data under different acting forces. In this embodiment, application of force mechanism 2 provides thrust, thrust conducts to atress axle subassembly 30 from force sensor subassembly 31, because force sensor subassembly 31 sets up in the one end that the bed frame 1 was kept away from to atress axle subassembly 30, when application of force mechanism 2 applys thrust, atress axle subassembly 30 can be along the directional displacement of the thrust that receives, and make gearbox housing 5's bearing frame 4 take place certain deformation, displacement sensor can detect the distance of atress axle subassembly 30 displacement, thereby the distance through detecting atress axle subassembly 30 displacement reachs the deflection of gearbox housing 5's bearing frame 4. The experimental data are obtained under the condition that the testing device is not damaged, the accuracy of the test is improved, the accuracy of the simulation test result can be verified through the actual test, and the test speed is improved. The deformation testing device can be matched with different gearbox shells 5 and bearing seats 4, so that the testing cost is greatly reduced.
Further, the force application mechanism 2 includes a bracket assembly 20 and a force application member 21 fixed with the bracket assembly 20, the bracket assembly 20 is fixedly connected with the base frame 1, the force application member 21 is disposed corresponding to the force sensor assembly 31 and is used for applying force to the force sensor assembly 31, the bracket assembly 20 is fixed on the base frame 1, one end of the force application member 21 is fixed on the bracket assembly 20, the other end is disposed corresponding to the force sensor assembly 31, the force application member 21 has a certain expansion amount and can provide thrust to the force sensor assembly 31, when the force application member 21 provides thrust to the force sensor assembly 31, the force sensor assembly 31 can provide a reaction force to the force application member 21, the bracket assembly 20 can provide a fixed platform for the force application member 21 and can transmit the return force transmitted to the force application member 21 to the bracket assembly 20, so that the force application member 21 can stably provide thrust to the force sensor assembly 31, the stability of the deformation amount testing device of the inventor is increased.
Furthermore, the bracket assembly 20 includes a supporting frame 200 and a supporting base 201 which are connected to each other, the supporting frame 200 is fixedly connected to the base frame 1, and the force application member 21 is fixedly connected to the supporting base 201, the supporting frame 200 in this embodiment is a right-angled triangle, wherein a right-angled edge of the supporting frame 200 is fixedly connected to the base frame 1, and another right-angled edge of the supporting frame 200 is fixedly connected to the supporting frame 200, and the supporting base 201 provides a platform for the force application member 21 to place, so as to fix the force application member 21.
The force application member 21 is a hydraulic jack, which has a compact structure and works stably, and in other embodiments, a mechanical jack or an air pressure jack may be used, which is not described herein.
Specifically, referring to fig. 2, the stressed shaft assembly 30 includes a connecting member 300 and a stressed shaft 301, one end of the stressed shaft 301 passes through the bearing seat 4 of the transmission, the other end of the stressed shaft 301 extends out of the casing 5 of the transmission, a through hole is formed in one end of the stressed shaft 301 extending out of the casing 5 of the transmission, and the connecting member 300 passes through the through hole and is connected with the force sensor assembly 31. In this embodiment, atress axle 301 and the casing 5 that passes the gearbox, with 5 clearance fit of gearbox casing, make things convenient for atress axle 301's assembly and dismantlement in gearbox casing 5, atress axle 301 stretches out the one end of casing 5 and has seted up the through-hole, the one end of connecting piece 300 is passed the through-hole and is connected with force sensor subassembly 31, the other end of connecting piece 300 is formed with the screw thread, connecting piece 300 is connected with the one end that atress axle 301 kept away from force sensor subassembly 31 through threaded connection's mode, prevent that connecting piece 300 from falling out from the through-hole of atress axle 301.
More specifically, the displacement sensor assembly 32 includes a first displacement sensor 320, the first displacement sensor 320 being disposed proximate an upper end of the bearing housing 4. When the force-receiving shaft 301 is pushed by the force-applying mechanism 2, the upper-end bearing seat 40 deforms, the first displacement sensor 320 moves in a direction away from the force-applying mechanism 2, and the distance moved by the first displacement sensor 320 is the deformation of the upper-end bearing seat 40, i.e., the leftward deformation of the bearing seat 4.
Further, the displacement sensor assembly 32 further comprises a second displacement sensor 321, the second displacement sensor 321 being arranged near the upper end of the bearing housing 4. When the force receiving shaft 301 receives the thrust of the force applying mechanism 2, the lower end bearing block 41 deforms, the second displacement sensor 321 moves in a direction approaching the force applying mechanism 2, and the distance moved by the second displacement sensor 321 is the deformation of the lower end bearing block 41, i.e., the deformation of the bearing block 4 to the right.
Further, the force sensor assembly 31 includes a force sensor body 310 and a force sensor connecting pad 311, the force sensor body 310 is disposed on the side of the force receiving shaft 301 opposite to the force applying mechanism 2 and is fixedly connected to the connecting member 300, and the force sensor connecting pad 311 is disposed on the side of the force sensor body 310 opposite to the force applying mechanism 2 and is fixedly connected to the force sensor. The force sensor body 310 is connected with the force sensor connecting disc 311 in a flange connection mode, so that the force sensor is convenient to disassemble, is connected and fastened, and is high in strength. When the force applying member 21 applies force, the force applying member 21 abuts against the force sensor connecting disc 311, the force sensor connecting disc 311 transmits the thrust provided by the force applying member 21 to the force sensor body 310, and the force sensor connecting disc 311 is arranged to prevent the force sensor body 310 from directly contacting with the force applying member 21, so that the force sensor body 310 is damaged.
In addition, the force receiving mechanism 3 further comprises a cover 33, and the cover 33 is connected with the force receiving shaft 301, the force sensor body 310 and the sensor connecting disc respectively. The cover 33 can effectively prevent the force-bearing shaft 301, the force sensor body 310 and the force sensor connecting disc 311 from being thrown out due to unbalanced force during the test process.
Specifically, the base frame 1 comprises an iron floor 10 and a base 11, the base 11 is fixedly connected with the iron floor 10, the force application mechanism 2 is fixedly connected with the iron floor 10, and the force application mechanism 3 is fixedly connected with the base 11. The base 11 is arranged above the iron floor 10, and the iron floor 10 and the base 11 are fixed in a bolt connection mode, so that the base 11 arranged above the iron floor 10 is prevented from being displaced due to the thrust provided by the force application member 21 in the experiment process.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A deformation amount testing device is characterized by comprising:
a base frame for securing a transmission case;
a force application mechanism;
the stress mechanism comprises a stress shaft assembly, a force sensor assembly and a displacement sensor assembly, one end of the stress shaft assembly is used for penetrating through a bearing seat of the gearbox, the other end of the stress shaft assembly is used for extending out of a shell of the gearbox and being connected with the force sensor assembly, the force sensor assembly is used for detecting the force application size of the force application mechanism, the displacement sensor assembly is connected with the position, close to the bearing seat, of the stress shaft assembly, and the displacement sensor assembly is used for detecting the displacement change of the position, close to the bearing seat, of the stress shaft assembly; the force application mechanism comprises a support assembly and a force application member fixed with the support assembly, the support assembly is fixedly connected with the base frame, and the force application member is arranged corresponding to the force sensor assembly and is used for applying force to the force sensor assembly along a direction perpendicular to the force-bearing shaft assembly; the bracket component comprises a supporting frame and a supporting seat which are mutually connected, the supporting frame is fixedly connected with the base frame, and the force application member is fixedly connected with the supporting seat.
2. The deflection testing apparatus of claim 1, wherein the force applying member is a hydraulic jack.
3. The deformation testing device of claim 1, wherein the stressed shaft assembly comprises a connecting piece and a stressed shaft, one end of the stressed shaft penetrates through a bearing seat of the gearbox, the other end of the stressed shaft extends out of a shell of the gearbox, a through hole is formed in one end of the stressed shaft extending out of the shell of the gearbox, and the connecting piece penetrates through the through hole and is connected with the force sensor assembly.
4. The deflection testing apparatus of claim 3, wherein the displacement sensor assembly includes a first displacement sensor disposed proximate an upper end of the bearing housing.
5. The deflection testing apparatus of claim 4, wherein the displacement sensor assembly further comprises a second displacement sensor disposed proximate a lower end of the bearing housing.
6. The deformation amount testing device according to claim 3, wherein the force sensor assembly includes a force sensor body provided on a side of the force receiving shaft opposite to the force application mechanism and fixedly connected to the connecting member, and a force sensor land provided on a side of the force sensor body opposite to the force application mechanism and fixedly connected to the force sensor.
7. The deflection testing device of claim 6, wherein the force-receiving mechanism further comprises a cover coupled to the force-receiving shaft, the force sensor body, and the sensor interface pad, respectively.
8. The deformation testing device according to any one of claims 1 to 7, wherein the base frame comprises an iron floor and a base, the base is fixedly connected with the iron floor, the force applying mechanism is fixedly connected with the iron floor, and the force applying mechanism is fixedly connected with the base.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427076.4A CN112557011B (en) | 2020-12-09 | 2020-12-09 | Deformation amount testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427076.4A CN112557011B (en) | 2020-12-09 | 2020-12-09 | Deformation amount testing device |
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| CN112557011A CN112557011A (en) | 2021-03-26 |
| CN112557011B true CN112557011B (en) | 2022-04-29 |
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| CN117147356B (en) * | 2023-10-31 | 2024-01-26 | 万向钱潮股份公司 | Calibration device and calibration method for axial force testing machine |
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| CN106840708A (en) * | 2017-03-27 | 2017-06-13 | 重庆理工大学 | Gear box casing deformation test method |
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| CN108692959A (en) * | 2018-06-22 | 2018-10-23 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle dent resistance energy test device |
| CN108896305A (en) * | 2018-08-27 | 2018-11-27 | 中国第汽车股份有限公司 | Aluminum enclosure bearing block Thermal-mechanical Coupling strain measurement system and measurement method |
| CN110967155A (en) * | 2019-09-30 | 2020-04-07 | 中国第一汽车股份有限公司 | Rigidity testing device for flexible disk of automatic transmission |
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2020
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|---|---|---|---|---|
| US5675076A (en) * | 1994-02-25 | 1997-10-07 | Fev Motorentechnik Gmbh & Co. Kommanditgesellschaft | Device for measuring cylinder deformations in piston-type internal-combustion engines |
| CN106840708A (en) * | 2017-03-27 | 2017-06-13 | 重庆理工大学 | Gear box casing deformation test method |
| CN108362576A (en) * | 2018-02-23 | 2018-08-03 | 安徽江淮汽车集团股份有限公司 | A kind of deformation test method of speed changer |
| CN108692959A (en) * | 2018-06-22 | 2018-10-23 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle dent resistance energy test device |
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