CN107192483B - Dynamometer machine - Google Patents
Dynamometer machine Download PDFInfo
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- CN107192483B CN107192483B CN201710568531.4A CN201710568531A CN107192483B CN 107192483 B CN107192483 B CN 107192483B CN 201710568531 A CN201710568531 A CN 201710568531A CN 107192483 B CN107192483 B CN 107192483B
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- vertical plate
- rotor
- rotating shaft
- brake
- rear vertical
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The dynamometer comprises a front vertical plate, wherein a rear vertical plate matched with the front vertical plate is arranged on the rear side of the front vertical plate; the front vertical plate and the rear vertical plate are positioned and connected through positioning pins; an opening is formed between the front vertical plate and the rear vertical plate; a brake is erected at the opening; the brake is erected between the front vertical plate and the rear vertical plate through a rotating shaft; the brake comprises a rotor sleeved outside the rotating shaft, and a stator matched with the rotor is sleeved outside the rotor; a rotor end cover is fixed at the front end of the rotor; the rotor end cover is connected with a rotor cup, and the rotor cup is sleeved outside the rotor; one end of the rotating shaft penetrates through the front vertical plate, and the other end of the rotating shaft is positioned in the rear vertical plate; one end of the rotating shaft, which is positioned on the rear vertical plate, is connected with a code disc. The dynamometer disclosed by the invention has better heat dissipation and more stable operation, and hot air is led out to the outside at the first time when the dynamometer is operated, so that the effect of rapid cooling is achieved, and the stable and normal operation of the dynamometer is ensured.
Description
Technical Field
The invention relates to a dynamometer.
Background
The dynamometer can be used for testing the torque, the rotating speed, the power and the like of an engine, and also can be used as loading equipment of a gear box, a speed reducer and a gearbox for testing the torque, the rotating speed, the power and the like of the engine are sensed by a sensor and are dataized by the traditional dynamometer, the front support and the rear support of the dynamometer are of split structures, and errors are easily caused in the processing of bearing hole sites on the front support structure and the rear support structure, so that the assembly precision is error, and the measurement precision is affected.
In the running process of the dynamometer, high temperature can be generated inside the dynamometer, most of the dynamometers are provided with cooling pipelines in the stator, cooling water is utilized to cool, but the cooling structure in the mode has requirements and is not suitable for all types of dynamometers, cooling is performed through the cooling pipelines, a water inlet pipe and a water outlet pipe are required to be arranged on a front vertical plate and are used for connecting the cooling pipelines, when torque is tested, a brake of the dynamometer can swing to a certain extent, the water inlet pipe and the water outlet pipe can correspondingly form tensile force, and the swinging brake is pulled, so that measurement accuracy is affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing a dynamometer, which can ensure the assembly precision of front and rear supporting structures during assembly, ensure the measurement precision, lead hot air to the outside at the first time when the dynamometer operates, play a role in rapid cooling and guarantee the stable and normal operation of the dynamometer.
The technical scheme adopted for solving the technical problems is as follows:
the invention discloses a dynamometer, which comprises a front vertical plate and is characterized in that: a rear vertical plate matched with the front vertical plate is arranged on the rear side of the front vertical plate; the front vertical plate and the rear vertical plate are positioned and connected through positioning pins; an opening is formed between the front vertical plate and the rear vertical plate; a brake is erected at the opening; the brake is erected between the front vertical plate and the rear vertical plate through a rotating shaft; the brake comprises a rotor sleeved outside the rotating shaft, and a stator matched with the rotor is sleeved outside the rotor; a rotor end cover is fixed at the front end of the rotor; the rotor end cover is connected with a rotor cup, and the rotor cup is sleeved outside the rotor; one end of the rotating shaft penetrates through the front vertical plate, and the other end of the rotating shaft is positioned in the rear vertical plate; one end of the rotating shaft, which is positioned on the rear vertical plate, is connected with a code disc; a speed measuring sensor matched with the code disc is arranged in the rear vertical plate; a rear end cover is arranged between the rear vertical plate and the brake, and the rear end cover is fixed with the stator; the rear end cover extends out of the shaft sleeve backwards, and the shaft sleeve is positioned in the rear vertical plate; the shaft sleeve is sleeved outside the rotating shaft; the shaft sleeve is provided with a sensor shifting block, and a torque sensor corresponding to the position of the sensor shifting block is arranged in the rear vertical plate; a rotor cover fixed with the stator is arranged between the front vertical plate and the brake; the rotor cover is connected with an air deflector positioned in the opening; the rear vertical plate is provided with an air inlet; an air cooling runner is arranged in the brake; a labyrinth seal groove is arranged between the rear end cover and the rear vertical plate, and labyrinth seal is carried out between the brake and the rear vertical plate through the labyrinth seal groove; the air inlet is communicated with the air cooling flow passage through the labyrinth seal groove.
The code disc is fixed on the rotating shaft through the code disc pressing pad.
The front side of the front vertical plate is provided with a front end cover, and the front vertical plate is fixed with the front end cover through screws; the front end cover is sleeved outside the rotating shaft.
A heat insulation cushion block is arranged between the shaft sleeve of the rear end cover and the sensor shifting block.
The rotor cup is connected to the rotor through a deep groove ball bearing; and a butterfly spring is arranged between the deep groove ball bearings.
The edge of the front vertical plate extends out of the shade towards the rear vertical plate; the opening is covered by the shade, a chamber is formed by enclosing the shade, the front vertical plate and the rear vertical plate, and the brake is positioned in the chamber.
The beneficial effects of the invention are as follows:
compared with the prior art, the air inlet of the dynamometer with the structure can enable external cooling air to continuously enter the brake, hot air in the brake is continuously led out to the outside from the air deflector by the cooling air, hot air can be discharged in the fastest time, a rapid cooling effect is achieved, a labyrinth seal groove is arranged between the brake and the rear vertical plate, labyrinth seal is carried out between the brake and the rear vertical plate through the labyrinth seal groove, non-contact seal is carried out between the brake and the rear vertical plate through the labyrinth seal, after the cooling air enters from the air inlet of the rear vertical plate, the cooling air can enter the brake through the labyrinth seal groove and flows into the air cooling flow channel to carry out cooling operation, the rear vertical plate and the brake are not required to be connected through a pipeline, and the influence of the pipeline on measurement accuracy is eliminated.
Compared with the prior art, the front vertical plate and the rear vertical plate of the dynamometer adopting the structure are positioned and connected through the positioning pins, and the front vertical plate and the rear vertical plate form an integrated structure due to the existence of the positioning pins, so that bearing hole positions on the front vertical plate and the rear vertical plate can be processed simultaneously, form and position tolerances of the bearing holes of the front vertical plate and the rear vertical plate are ensured, concentricity of the bearing holes is ensured, equipment measurement precision errors caused by assembly precision are eliminated by the structure that the front vertical plate and the rear vertical plate are assembled integrally, and the stability in operation is higher.
Drawings
FIG. 1 is a schematic view of an open-type structure of a dynamometer of the present invention;
FIG. 2 is a schematic view of the closed structure of the dynamometer of the present invention;
FIG. 3 is a schematic view of the labyrinth seal groove of the dynamometer of the present invention;
fig. 4 is a perspective view of the dynamometer of the present invention.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
referring to fig. 1 to 4, the present invention provides a dynamometer, which includes a front vertical plate 1, wherein a rear vertical plate 2 matched with the front vertical plate 1 is arranged at the rear side of the front vertical plate 1; the front vertical plate 1 and the rear vertical plate 2 are positioned and connected through a positioning pin 101; an opening 3 is formed between the front vertical plate 1 and the rear vertical plate 2; a brake 4 is arranged at the opening 3; the brake 4 is erected between the front vertical plate 1 and the rear vertical plate 2 through a rotating shaft 5; the brake 4 comprises a rotor 6 sleeved outside the rotating shaft 5, and a stator 7 matched with the rotor 6 is sleeved outside the rotor 6; a rotor end cover 8 is fixed at the front end of the rotor 6; the rotor end cover 8 is connected with a rotor cup 9, and the rotor cup 9 is sleeved outside the rotor 6; one end of the rotating shaft 5 penetrates through the front vertical plate 1, and the other end of the rotating shaft is positioned in the rear vertical plate 2; one end of the rotating shaft 5, which is positioned on the rear vertical plate 2, is connected with a code disc 10; a speed measuring sensor 11 matched with the code wheel 10 is arranged in the rear vertical plate 2; a rear end cover 12 is arranged between the rear vertical plate 2 and the brake 4, and the rear end cover 12 is fixed with the stator 7; the rear end cover 12 extends out of the shaft sleeve 13 backwards, and the shaft sleeve 13 is positioned in the rear vertical plate 2; the shaft sleeve 13 is sleeved outside the rotating shaft 5; the shaft sleeve 13 is provided with a sensor shifting block 14, and a torque sensor 15 corresponding to the position of the sensor shifting block 14 is arranged in the rear vertical plate 2; a rotor cover 16 fixed with the stator 7 is arranged between the front vertical plate 1 and the brake 4; the rotor cover 16 is connected with an air deflector 17 positioned in the opening 3; an air inlet 201 is arranged on the rear vertical plate 2; an air cooling flow passage 18 is arranged in the brake 4; a labyrinth seal groove 1201 is arranged between the rear end cover 12 and the rear vertical plate 2, and labyrinth seal is carried out between the brake 4 and the rear vertical plate 2 through the labyrinth seal groove; the air inlet 201 is communicated with the air cooling flow passage 18 through a labyrinth seal groove 1201.
The code wheel 10 is fixed on the rotating shaft 5 through a code wheel pressing pad 19.
The front side of the front vertical plate 1 is provided with a front end cover 20, and the front vertical plate 1 and the front end cover 20 are fixed by screws; the front end cover 20 is sleeved outside the rotating shaft 5.
A heat insulation cushion block 21 is arranged between the shaft sleeve 13 of the rear end cover 12 and the sensor shifting block 14.
A deep groove ball bearing 22 and a belleville spring 23 are arranged between the rotor 6 and the rotor cup 9.
The rotor cup 9 is connected to the rotor 6 through a deep groove ball bearing 22; a belleville spring 23 is arranged between the deep groove ball bearings 22.
The edge of the front vertical plate 1 extends out of the shade 24 towards the direction of the rear vertical plate 2; the opening 3 is covered by the shade 24, a chamber 25 is formed by enclosing the shade 24, the front vertical plate 1 and the rear vertical plate 2, and the brake 4 is positioned in the chamber 25.
The application method of the invention is as follows:
when the torque of the engine needs to be tested, the rotating shaft of the engine is connected with the rotating shaft 5 through the coupler, then the engine is started, at the moment, the rotating shaft of the engine can rotate and simultaneously drives the rotating shaft 5 to rotate, the rotor 6 is sleeved outside the rotating shaft 5 and can rotate along with the rotating shaft, an electromagnetic field can be generated when the rotor 6 rotates, the stator 7 can apply resistance to the rotor 6, the reaction force formed by the resistance can enable the stator 7 to swing to a certain extent, the rear end cover 12 is fixed with the stator 7, so that the rear end cover 12 swings under the influence of the stator 7, the sensor shifting block 14 is driven to swing, the sensor shifting block 14 contacts with the torque sensor 15 along with the swing of the sensor shifting block 14, the force received by the sensor shifting block 14 is transmitted to the torque sensor 15, finally the torque sensor 15 outputs a signal to form actual data, a worker can clearly know the torque of the tested engine, and the rotating shaft 5 rotates along with the rotating speed measuring sensor 11 can test the rotating speed of the rotating shaft 5 along with the rotating speed measuring disc 10.
When the dynamometer operates, external cooling air enters the brake 4 through the air inlet 201, flows through the air cooling flow channel 18 and drives hot air of the brake 4, the cooling air drives the hot air to flow to the rotor cover 16 along with the flowing of the cooling air, finally, under the diversion effect of the air deflector 17, the hot air and the cooling air are all discharged to the opening 3 and dispersed in external air, and thus, the external cooling air is circulated, the external cooling air continuously enters from the air inlet 201, the hot air in the brake 4 is continuously led out to the outside from the air deflector 17 by the cooling air, the hot air can be discharged in the fastest time, the effect of rapid cooling is achieved, the normal operation of the dynamometer is ensured, the condition that the high temperature affects the dynamometer is avoided, the service performance and the test precision of the dynamometer are ensured, a labyrinth seal groove 1201 is arranged between the rear end cover 12 and the rear vertical plate 2, the brake 4 and the rear vertical plate 2 are sealed through the labyrinth seal groove 1201, the brake 4 and the rear vertical plate 2 are sealed in a non-contact mode, the air can be continuously led out from the air deflector 17 to the outside through the labyrinth seal groove 1201, the air inlet 201 is connected into the air cooling flow channel 2 through the air cooling flow channel 18, and the influence on the accuracy of the air cooling channel 2 is eliminated, and the accuracy of the measurement is not needed.
The brake 4 of the dynamometer is arranged at the opening 3 formed by the front vertical plate 1 and the rear vertical plate 2, so that the brake 4 is in an open environment, and the brake is contacted with external cooling air to the greatest extent, thereby accelerating the heat dissipation and improving the heat dissipation effect.
The front vertical plate 1 and the rear vertical plate 2 are positioned and connected through the positioning pins 101, the front vertical plate 1 and the rear vertical plate 2 form an integrated structure due to the existence of the positioning pins 101, so that bearing hole positions on the front vertical plate 1 and the rear vertical plate 2 can be processed simultaneously, form and position tolerances of the bearing holes of the front vertical plate and the rear vertical plate are ensured, concentricity of the bearing holes is ensured, equipment measurement precision errors caused by assembly precision are eliminated due to the integrated structure of the front vertical plate 1 and the rear vertical plate 2, and stability during operation is stronger.
The code wheel 10 is fixed on the rotating shaft 5 through the code wheel compressing pad 19, the stability between the code wheel 10 and the rotating shaft 5 can be improved through the code wheel compressing pad 19, and the stability of the code wheel 10 during rotation is improved, so that the accuracy of a speed measurement result is guaranteed.
The front side of the front vertical plate 1 is provided with a front end cover 20, the front vertical plate 1 and the front end cover 20 are fixed through screws, the front end cover 20 is sleeved outside the rotating shaft 5, the position of the rotating shaft 5 can be limited, concentricity of the rotating shaft 5 is guaranteed, and when the rotating shaft 5 is eccentric, the installation error of the rotating shaft 5 can be adjusted by adjusting the position of the front end cover 20.
A heat insulation cushion block 21 is arranged between the shaft sleeve 13 of the rear end cover 12 and the sensor shifting block 14, the heat insulation cushion block 21 can play a role in heat insulation, and the situation that the test result is deviated due to the influence of high temperature on the sensor shifting block is avoided.
The rotor cup 9 is connected to the rotor 6 through the deep groove ball bearings 22, and the belleville springs 23 are arranged between the deep groove ball bearings 22, so that the axial clearance of the rotor cup 9 is automatically eliminated in the running process of the dynamometer, the hysteresis force is more stable, the measurement precision of the equipment is higher, and the rotor cup can achieve the effect of high-speed rotation and the thermal deformation resistance.
The front vertical plate 1 edge extends the shade 24 towards rear vertical plate 2 direction, the shade covers opening 3, the shade 24, preceding vertical plate 1, enclose between rear vertical plate 2 three and form a cavity 25, stopper 4 is located cavity 25, make stopper 4 be in closed environment, stopper 4 can be fine protected including, avoid irrelevant personnel touch to the stopper, guarantee stopper 4 can not receive external influence when the operation, the stability when making the dynamometer operation is ensured, and preceding vertical plate and shade are integrated into one piece structure in fact, the shade belongs to a part of preceding vertical plate, preceding vertical plate this moment is U type form, when processing, only need to scratch out a space with the aluminium piece center, can accomplish the processing of preceding vertical plate, the machining process is very simple, thereby can not involve the processing of other spare parts, preceding vertical plate also need not to assemble the dynamometer through screw and other spare parts and seal, the preceding vertical plate of integrated into one piece structure has fabulous stability, avoid appearing the dynamometer during operation because the vibrations lead to the circumstances of not hard up, and the front vertical plate of integrated into one piece structure guarantees the precision measurement.
The front vertical plate of the dynamometer is L-shaped and is used as a base, a separate base is not required to be arranged below the front vertical plate and the rear vertical plate, parts are reduced, valves assembled with each other are removed, the front vertical plate and the base are of a split structure, the front vertical plate is of an integrated structure with the base, and the situation that the measurement accuracy is affected due to errors in assembly between the front vertical plate and the base is avoided.
Claims (4)
1. The utility model provides a dynamometer, includes front vertical plate, its characterized in that: a rear vertical plate matched with the front vertical plate is arranged on the rear side of the front vertical plate; the front vertical plate and the rear vertical plate are positioned and connected through positioning pins; an opening is formed between the front vertical plate and the rear vertical plate; a brake is erected at the opening; the brake is erected between the front vertical plate and the rear vertical plate through a rotating shaft; the brake comprises a rotor sleeved outside the rotating shaft, and a stator matched with the rotor is sleeved outside the rotor; a rotor end cover is fixed at the front end of the rotor; the rotor end cover is connected with a rotor cup, and the rotor cup is sleeved outside the rotor; one end of the rotating shaft penetrates through the front vertical plate, and the other end of the rotating shaft is positioned in the rear vertical plate; one end of the rotating shaft, which is positioned on the rear vertical plate, is connected with a code disc; a speed measuring sensor matched with the code disc is arranged in the rear vertical plate; a rear end cover is arranged between the rear vertical plate and the brake, and the rear end cover is fixed with the stator; the rear end cover extends out of the shaft sleeve backwards, and the shaft sleeve is positioned in the rear vertical plate; the shaft sleeve is sleeved outside the rotating shaft; the shaft sleeve is provided with a sensor shifting block, and a torque sensor corresponding to the position of the sensor shifting block is arranged in the rear vertical plate; a rotor cover fixed with the stator is arranged between the front vertical plate and the brake; the rotor cover is connected with an air deflector positioned in the opening; the rear vertical plate is provided with an air inlet; an air cooling runner is arranged in the brake; a labyrinth seal groove is arranged between the rear end cover and the rear vertical plate, and labyrinth seal is carried out between the brake and the rear vertical plate through the labyrinth seal groove; the air inlet is communicated with the air cooling flow passage through a labyrinth seal groove; a heat insulation cushion block is arranged between the shaft sleeve of the rear end cover and the sensor shifting block; the rotor cup is connected to the rotor through a deep groove ball bearing; and a butterfly spring is arranged between the deep groove ball bearings.
2. A dynamometer according to claim 1, characterized in that: the code disc is fixed on the rotating shaft through the code disc pressing pad.
3. A dynamometer according to claim 1, characterized in that: the front side of the front vertical plate is provided with a front end cover, and the front vertical plate is fixed with the front end cover through screws; the front end cover is sleeved outside the rotating shaft.
4. A dynamometer according to claim 1, characterized in that: the edge of the front vertical plate extends out of the shade towards the rear vertical plate; the opening is covered by the shade, a chamber is formed by enclosing the shade, the front vertical plate and the rear vertical plate, and the brake is positioned in the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710568531.4A CN107192483B (en) | 2017-07-13 | 2017-07-13 | Dynamometer machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710568531.4A CN107192483B (en) | 2017-07-13 | 2017-07-13 | Dynamometer machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107192483A CN107192483A (en) | 2017-09-22 |
| CN107192483B true CN107192483B (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710568531.4A Active CN107192483B (en) | 2017-07-13 | 2017-07-13 | Dynamometer machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN107192483B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390547B (en) * | 2019-10-15 | 2022-12-13 | 浙江大学台州研究院 | Dynamometer based on rotating speed measuring device |
| CN112229555B (en) * | 2020-09-24 | 2021-11-23 | 台州市光中电器制造有限公司 | Novel dynamometer |
| CN112229554B (en) * | 2020-09-24 | 2021-11-16 | 台州市光中电器制造有限公司 | Dynamometer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8505374B1 (en) * | 2009-12-10 | 2013-08-13 | Dynocom Industries, Inc. | Portable on vehicle dynamometer |
| CN204373821U (en) * | 2015-02-02 | 2015-06-03 | 北京菱动瑞创自动化技术有限公司 | A kind of direct water-cooling type disc type eddy current dynamometer |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB734024A (en) * | 1952-09-11 | 1955-07-20 | Heenan & Froude Ltd | Improvements in hydraulic dynamometers and brakes |
| JPH0555096U (en) * | 1991-12-25 | 1993-07-23 | 神鋼電機株式会社 | Oscillating dynamometer cooling device |
| JPH0632752U (en) * | 1992-09-30 | 1994-04-28 | エヌティエヌ株式会社 | Air-cooled bearing device |
| JP3723689B2 (en) * | 1998-09-02 | 2005-12-07 | 株式会社日立製作所 | Clothes dryer |
| US6840108B2 (en) * | 2003-01-08 | 2005-01-11 | Packaging Technologies & Inspection Llc | Method and apparatus for airborne ultrasonic testing of package and container seals |
| JP2005247049A (en) * | 2004-03-02 | 2005-09-15 | Suzuki Motor Corp | Cooling structure for vehicle transmission |
| CN104564881B (en) * | 2014-12-30 | 2016-06-08 | 浙江大学台州研究院 | Spool transfer composite hydraulic excitation controlling valve |
| CN104806301B (en) * | 2015-04-03 | 2016-11-02 | 清华大学 | A kind of noncontact finger tip-labyrinth-brush composite seal |
| CN205977817U (en) * | 2016-08-30 | 2017-02-22 | 四川三维鼓风机有限公司 | A seal cooling structure for ultra -temperature fan |
| CN206847832U (en) * | 2017-07-13 | 2018-01-05 | 台州市光中电器制造有限公司 | A kind of Novel dynamometer |
-
2017
- 2017-07-13 CN CN201710568531.4A patent/CN107192483B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8505374B1 (en) * | 2009-12-10 | 2013-08-13 | Dynocom Industries, Inc. | Portable on vehicle dynamometer |
| CN204373821U (en) * | 2015-02-02 | 2015-06-03 | 北京菱动瑞创自动化技术有限公司 | A kind of direct water-cooling type disc type eddy current dynamometer |
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| Publication number | Publication date |
|---|---|
| CN107192483A (en) | 2017-09-22 |
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