CN111982373A - Measuring device and measuring method for hub load of automatic tensioner - Google Patents
Measuring device and measuring method for hub load of automatic tensioner Download PDFInfo
- Publication number
- CN111982373A CN111982373A CN202010695333.6A CN202010695333A CN111982373A CN 111982373 A CN111982373 A CN 111982373A CN 202010695333 A CN202010695333 A CN 202010695333A CN 111982373 A CN111982373 A CN 111982373A
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- bearing
- hub load
- automatic tensioner
- pin hole
- hubload
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a device and a method for measuring the hub load of an automatic tensioner, wherein the device comprises the automatic tensioner, a bearing, a tool part, a hub load sensor, a tension wheel, a bearing dust cover and a bolt; the tensioning arm of the automatic tensioner is provided with a journal for mounting a bearing, and the tool part is positioned on the surface of the journal; the hub load sensor is arranged on the tool component, the bearing is in interference fit with the tension wheel, and the tension wheel and the tool component are fixed on the bearing through the bearing dust cover and the bolt. The measuring device disclosed by the invention has the advantages of compact and simple structure and low cost, can effectively and conveniently obtain the hub load of the automatic tensioner, and can convert in real time to obtain the working torque of the tensioner at the rotating speed of each crankshaft wheel, thereby providing guidance for reducing the risks of belt slipping, breakage and the like, improving the design precision of a gear train of an accessory driving system at the front end of an engine and the like.
Description
Technical Field
The invention relates to a device and a method for measuring tensioner hubload, in particular to a device and a method for measuring automatic tensioner hubload.
Background
In the engine front end accessory system, the output power of a crankshaft is transmitted to each load wheel through a belt, and the stress state of each load wheel is directly related to the gear train layout and the service life of the system. In the early development process of the accessory system, at present, the tension of each belt section in the system is measured by using a tension meter under the static working condition of the engine, and whether the pretightening force of the belt meets the requirements or not is verified, see patent CN 104870957A. However, under the dynamic working condition of the engine, the hub load of each load wheel is difficult to be accurately measured in real time, and the working state of the belt pulley is obtained, so that the accessory gear train is difficult to be accurately designed. In particular, excessive hubload in an automatic tensioner in an accessory system can cause the belt to be susceptible to fatigue failure, and excessive hubload can cause the system to slip, resulting in poor NVH performance of the system.
In patent CN204269278U, a unit for acquiring dynamic tension of a belt of an automobile engine is described. In the patent, a load signal of a belt is acquired by arranging a force sensor with a lead wire, and then the load signal is subjected to data processing to obtain the hub load of a belt pulley. However, the device needs to modify and design the original bearing inner ring, is difficult to process, and has the trouble of arrangement caused by lead wires.
In patent CN203606057U, an engine idler dynamic measurement device is described. In the patent, a simulated idler wheel consisting of a hub component and an outer ring is designed, a strain gauge is attached to a web plate of the hub component, then the strain of the strain gauge is collected, and the load of a belt acting on the idler wheel is converted. Although the method can obtain the dynamic load capacity of the idler wheel, the structure design of the idler wheel is complex and difficult to process; the strain gauge is inconvenient to arrange due to more wiring, the spoke plate is easy to fall off, and the measurement precision of the strain gauge is easily interfered by various factors, so that the measurement result is unreliable.
Disclosure of Invention
The invention is an apparatus and method for measuring automatic tensioner hubload. The invention has simple structure and convenient operation, can obtain the hub load of the automatic tensioner in real time, prevents the bad effect caused by overlarge or undersize hub load, and can be used for verifying and checking the reliability of the design of the gear train in real time.
The invention is realized by at least one of the following technical schemes.
A measuring device for hub load of an automatic tensioner comprises the automatic tensioner, a bearing, a tool part, a hub load sensor, a tension pulley, a bearing dust cover and a bolt; the tensioning arm of the automatic tensioner is provided with a journal for mounting a bearing, and the tool part is positioned on the surface of the journal; the hub load sensor is arranged on the tool component, the bearing is in interference fit with the tension wheel, and the tension wheel and the tool component are fixed on the bearing through the bearing dust cover and the bolt.
Furthermore, a first positioning pin hole and a second positioning pin hole are formed in the shaft neck.
Further, the tool part comprises a pressing plate, a gasket and a main plate, wherein a concave groove for placing the wheel hub load sensor, a first pin hole and a second pin hole are formed in the main plate.
Further, the first pin hole and the first positioning pin hole, and the second pin hole and the second positioning pin hole are arranged on the upper end face of the journal with concentricity, and circumferential positioning is achieved through the first pin and the second pin respectively.
Further, the pressure plate is provided with an arc surface and a rectangular surface, wherein the arc surface is matched with the bearing inner ring, and the rectangular surface is in contact with one end face of the hub load sensor.
Further, the wheel hub load sensor is arranged in the wheel hub load acting direction, a gasket is arranged on the surface, in contact with the main plate, of the wheel hub load sensor, and looseness prevention is achieved through the gasket.
Further, the sum of the height of the main plate and the height of the journal is equal to the height of the bearing.
Further, the bearing and journal are clearance fit; the height of the shaft neck is smaller than the bearing height of the tensioning wheel.
Furthermore, the first positioning pin hole and the second positioning pin hole in the journal are geometrically arranged according to the gear train layout of the engine front end accessory driving system and are symmetrically arranged on two sides of the action direction of the wheel hub load.
In an engine front end accessory driving system comprising a plurality of load wheels, a belt wraps a tension wheel at a certain wrap angle phi, and a fixed pivot point exists on a tension arm; in order to maintain the tension of the system stable, the working moment M of the tensionerNComprises the following steps:
in the formula: l istThe radial distance between the rotation center of the central spindle of the tensioner and the rotation center of the tensioning wheel is referred to as the arm length of the tensioning arm for short; ftThe resultant force of the belt tension acting on the tension pulley under any engine working condition is the wheel hub load; gamma is the included angle between the tensioning arm and the wheel hub load acting direction;
wherein, the included angle gamma between the tensioning arm and the wheel hub load acting direction is obtained by the conversion of the displacement of the testing tensioning arm, and the wheel hub load FtAnd obtaining the measured value according to the wheel hub load sensor.
Compared with the prior art, the invention has the technical effects that:
the device for measuring the hub load of the automatic tensioner, disclosed by the invention, has the advantages of compact and simple structure and low cost, can effectively and conveniently obtain the hub load of the automatic tensioner, reduce the risks of belt slipping, breakage and the like, improve the wheel train design precision of an accessory driving system at the front end of an engine, and can obtain the working torque of the tensioner at the rotating speed of each crankshaft wheel in real time.
Drawings
FIG. 1 is a schematic view of an automatic tensioner hubload measurement apparatus of the present embodiment;
FIG. 2 is a schematic view of the tensioner arm of the present embodiment;
FIG. 3 is a schematic view of a wheel hub load mounting tooling assembly according to the present embodiment;
FIG. 4 is a force analysis diagram of a tensioner in a classic engine front end accessory system;
FIG. 5 shows the measured results of the hub load of the automatic tensioner at a constant average rotational speed of the crankshaft according to the present embodiment;
FIG. 6 is the measured result of the output torque of the automatic tensioner at a constant average rotational speed of the crankshaft according to the present embodiment;
in the figure: 1-automatic tensioner; 101-a first dowel hole; 102-a second dowel hole; 103-journal; 104-a tensioning arm; 2-a bearing; 3-tooling components; 301-a first pin hole; 302-a second pin hole; 303-a concave groove; 304-a platen; 305-a shim; 306-a first pin; 307-a second pin; 308-a main board; 4-a wheel hub load sensor; 5-a tension wheel; 6-bearing dust cap; 7-mounting bolts.
Detailed Description
For a better understanding of the present invention, embodiments thereof are described in further detail below with reference to the accompanying drawings.
The device for measuring the hub load of the automatic tensioner shown in fig. 1 mainly comprises the automatic tensioner 1, a bearing 2, a tool part 3, a hub load sensor 4, a tension wheel 5, a dust cover 6 and a bolt 7. The hub load sensor is used for acquiring a belt resultant force signal acting on the tension pulley.
As shown in fig. 2, the tensioner arm 104 of the automatic tensioner 1 has a journal 103 on which the bearing 2 is mounted. The bearing 2 is in interference fit with the tensioning wheel 5, and the bearing 2 is in clearance fit with the journal 103; the height of the shaft neck 103 is less than that of the bearing 2 of the mounting tension wheel 5, and the shaft neck 103 is provided with a first positioning pin hole 101 and a second positioning pin hole 102 for mounting a tool component 3;
the first positioning pin hole 101 and the second positioning pin hole 102 on the journal 103 need to be geometrically arranged according to the gear train layout of the engine front end accessory driving system, and are symmetrically arranged on two sides of the wheel hub load acting direction;
as shown in fig. 3, the tooling component 3 for mounting the wheel hub load sensor 4 mainly comprises a pressure plate 304, a gasket 305 and a main plate 308, wherein the main plate 308 is provided with a rectangular concave groove 303, a first pin hole 301 and a second pin hole 302. The first pin hole 301 and the first dowel hole 101, and the second pin hole 302 and the second dowel hole 102 are concentrically arranged on the upper end face of the journal 103, and are circumferentially positioned by a first dowel 306 and a second dowel 307, respectively.
The hub load sensor 4 has a Bluetooth data transmission function, does not need to be connected with a signal collector through a lead wire, and can directly transmit signals to data acquisition equipment;
the concave groove 303 on the main plate 308 is used for mounting a hub load sensor; in particular, the sum of the height of the main plate 308 and the height of the journal 103 is equal to the height of the bearing 2.
The pressing plate 304 has a circular arc surface and a rectangular surface. The arc surface is matched with the inner ring of the bearing 2, and the rectangular surface is contacted with one end surface of the hub load sensor 4;
the hub load sensor 4 is arranged in the hub load acting direction, a gasket 305 is arranged on the surface of the hub load sensor 4, which is in contact with the main plate 308, and looseness prevention is realized through the gasket 305;
the dust cap 6 is located on the tension wheel 5, and the shaft neck 103 and the tool component 3 are axially positioned through the dust cap 6 and the bolt 7.
A method for measuring the working torque of a tensioner based on the device for measuring the hubload of an automatic tensioner.
Fig. 4 shows a classic engine front end accessory system, where the load wheels are an electric motor wheel (ALT) and an air conditioning compressor wheel (AC), the drive wheel is a crankshaft wheel (CS), the belt is wrapped around a Tensioner (TEN) at a certain wrap angle phi, and the tensioner arm swings around a rotation pivot (P) at a certain angular velocity (omega). In order to maintain the tension of the system stable, the working moment M of the tensionerNComprises the following steps:
in the formula: l istThe radial distance between the rotation center of the central spindle of the tensioner and the rotation center of the tensioning wheel is referred to as the arm length of the tensioning arm for short; ftThe resultant force of the belt tension acting on the tension pulley under any engine working condition is the wheel hub load; gamma rayIs the angle between the tensioner arm and the direction of the hubload.
Wherein, the included angle gamma between the tensioning arm and the wheel hub load acting direction can be obtained by the conversion of the displacement of the testing tensioning arm, and the wheel hub load FtThe measured values can be obtained according to the tool component 3 and the hub load sensor 4, fig. 5 is the measured result of the hub load of the automatic tensioner when the rotating speed of a crankshaft wheel is 1000r/min, and fig. 6 is the calculation result of the working torque of the tensioner obtained by converting the measured result of the hub load of the automatic tensioner.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. An automatic tensioner hubload measuring device, comprising: the device comprises an automatic tensioner (1), a bearing (2), a tool part (3), a wheel hub load sensor (4), a tension wheel (5), a bearing dust cover (6) and a bolt (7); the tensioning arm 104 of the automatic tensioner (1) is provided with a journal (103) for mounting a bearing (2), and the tool part (3) is positioned on the surface of the journal (103); wheel hub load sensor (4) set up on frock part (3), bearing (2) and take-up pulley (5) interference fit, take-up pulley (5) and frock part (3) are fixed on bearing (2) through bearing shield (6) and bolt (7).
2. The automatic tensioner hubload measurement device of claim 1, wherein: the shaft neck (103) is provided with a first positioning pin hole (101) and a second positioning pin hole (102).
3. The automatic tensioner hubload measurement device of claim 2, wherein: the tool component (3) comprises a pressing plate (304), a gasket (305) and a main plate (308), wherein a concave groove (303) for placing the wheel hub load sensor (4), a first pin hole (301) and a second pin hole (302) are formed in the main plate (308).
4. The automatic tensioner hubload measurement device of claim 3, wherein: the first pin hole 301 and the first positioning pin hole (101), the second pin hole 302 and the second positioning pin hole (102) are concentrically arranged on the upper end face of the journal (103), and are circumferentially positioned by a first pin (306) and a second pin (307), respectively.
5. The automatic tensioner hubload measurement device of claim 4, wherein: the pressing plate (304) is provided with an arc surface and a rectangular surface, wherein the arc surface is matched with the inner ring of the bearing (2), and the rectangular surface is in contact with one end face of the hub load sensor (4).
6. The automatic tensioner hubload measurement device of claim 5, wherein: the hub load sensor (4) is arranged in the action direction of the hub load, a gasket (305) is arranged on the surface, in contact with the main plate (308), of the hub load sensor (4), and looseness prevention is achieved through the gasket (305).
7. The automatic tensioner hubload measurement device of claim 6, wherein: the sum of the height of the main plate (308) and the height of the journal (103) is equal to the height of the bearing (2).
8. The automatic tensioner hubload measurement device of claim 7, wherein: the bearing (2) is in clearance fit with the journal (103); the height of the journal (103) is smaller than the bearing height of the tension wheel (5).
9. The automatic tensioner hubload measurement device of claim 8, wherein: the first positioning pin hole (101) and the second positioning pin hole (102) on the journal (103) are geometrically arranged according to the gear train layout of the engine front end accessory driving system and symmetrically arranged on two sides of the action direction of the wheel hub load.
10. The measuring method of the automatic tensioner hubload measuring apparatus according to any one of claims 1 to 9, characterized in that: in an engine front end accessory drive system comprising a plurality of load wheels, a belt wraps a tension wheel at a certain wrap angle phi, and a fixed pivot point exists on a tension arm; in order to maintain the tension of the system stable, the working moment M of the tensionerNComprises the following steps:
in the formula: l istThe radial distance between the rotation center of the central spindle of the tensioner and the rotation center of the tensioning wheel is referred to as the arm length of the tensioning arm for short; ftThe resultant force of the belt tension acting on the tension pulley under any engine working condition is the wheel hub load; gamma is the included angle between the tensioning arm and the wheel hub load acting direction;
wherein, the included angle gamma between the tensioning arm and the wheel hub load acting direction is obtained by the conversion of the displacement of the testing tensioning arm, and the wheel hub load FtAnd the measured values are obtained according to the wheel hub load sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010695333.6A CN111982373A (en) | 2020-07-19 | 2020-07-19 | Measuring device and measuring method for hub load of automatic tensioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010695333.6A CN111982373A (en) | 2020-07-19 | 2020-07-19 | Measuring device and measuring method for hub load of automatic tensioner |
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| CN111982373A true CN111982373A (en) | 2020-11-24 |
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| CN202010695333.6A Pending CN111982373A (en) | 2020-07-19 | 2020-07-19 | Measuring device and measuring method for hub load of automatic tensioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611493A (en) * | 2020-12-07 | 2021-04-06 | 潍柴动力股份有限公司 | Tensioner load calibration device and system and engine front end gear train |
| CN114088173A (en) * | 2021-11-10 | 2022-02-25 | 郑州业伟实业有限公司 | Overload-proof excavator weighing device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657753A (en) * | 2004-02-03 | 2005-08-24 | 三菱扶桑卡客车株式会社 | Adjusting device of belt tension |
| JP2006308339A (en) * | 2005-04-27 | 2006-11-09 | Mitsuboshi Belting Ltd | Belt load measuring apparatus |
| JP2010053877A (en) * | 2008-08-26 | 2010-03-11 | Ntn Corp | Automatic tensioner |
| CN202140521U (en) * | 2011-06-28 | 2012-02-08 | 广西玉柴机器股份有限公司 | Engine belt tensioning device with tensioning scales |
| CN202511936U (en) * | 2012-01-18 | 2012-10-31 | 安徽圣力达电器有限公司 | Tension sensor with wireless function |
| JP2014109237A (en) * | 2012-12-03 | 2014-06-12 | Toyota Motor Corp | Chain tension control device of internal combustion engine |
| CN204269278U (en) * | 2014-12-22 | 2015-04-15 | 无锡永凯达齿轮有限公司 | The collecting unit of motor car engine belt dynamic tension |
| US20160348766A1 (en) * | 2015-05-29 | 2016-12-01 | Kit Masters | Modular tensioner system |
| CN206056848U (en) * | 2015-07-21 | 2017-03-29 | 艾森巴赫布绍登有限两合公司 | For measuring the measurement roller of belt tension |
| CN106644211A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Force measuring device |
| CN208128080U (en) * | 2018-04-26 | 2018-11-20 | 重庆智驱科技有限公司 | The motor of bandgap calibration device |
| JP2019070533A (en) * | 2017-10-05 | 2019-05-09 | 株式会社東日製作所 | Auxiliary component for tension applying device |
| DE102018218161A1 (en) * | 2018-10-24 | 2020-04-30 | Contitech Antriebssysteme Gmbh | Method and device for measuring the pretensioning force of a drive belt |
| CN211013331U (en) * | 2019-11-29 | 2020-07-14 | 内江恒博机械制造有限公司 | Hydraulic tensioner push-out force detection tool |
-
2020
- 2020-07-19 CN CN202010695333.6A patent/CN111982373A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657753A (en) * | 2004-02-03 | 2005-08-24 | 三菱扶桑卡客车株式会社 | Adjusting device of belt tension |
| JP2006308339A (en) * | 2005-04-27 | 2006-11-09 | Mitsuboshi Belting Ltd | Belt load measuring apparatus |
| JP2010053877A (en) * | 2008-08-26 | 2010-03-11 | Ntn Corp | Automatic tensioner |
| CN202140521U (en) * | 2011-06-28 | 2012-02-08 | 广西玉柴机器股份有限公司 | Engine belt tensioning device with tensioning scales |
| CN202511936U (en) * | 2012-01-18 | 2012-10-31 | 安徽圣力达电器有限公司 | Tension sensor with wireless function |
| JP2014109237A (en) * | 2012-12-03 | 2014-06-12 | Toyota Motor Corp | Chain tension control device of internal combustion engine |
| CN204269278U (en) * | 2014-12-22 | 2015-04-15 | 无锡永凯达齿轮有限公司 | The collecting unit of motor car engine belt dynamic tension |
| US20160348766A1 (en) * | 2015-05-29 | 2016-12-01 | Kit Masters | Modular tensioner system |
| CN206056848U (en) * | 2015-07-21 | 2017-03-29 | 艾森巴赫布绍登有限两合公司 | For measuring the measurement roller of belt tension |
| CN106644211A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Force measuring device |
| JP2019070533A (en) * | 2017-10-05 | 2019-05-09 | 株式会社東日製作所 | Auxiliary component for tension applying device |
| CN208128080U (en) * | 2018-04-26 | 2018-11-20 | 重庆智驱科技有限公司 | The motor of bandgap calibration device |
| DE102018218161A1 (en) * | 2018-10-24 | 2020-04-30 | Contitech Antriebssysteme Gmbh | Method and device for measuring the pretensioning force of a drive belt |
| CN211013331U (en) * | 2019-11-29 | 2020-07-14 | 内江恒博机械制造有限公司 | Hydraulic tensioner push-out force detection tool |
Non-Patent Citations (2)
| Title |
|---|
| LONG, SHANGBIN 等: "Method for estimating vibration responses of belt drive systems with a nonlinear tensioner", 《NONLINEAR DYNAMICS》 * |
| 曾祥坤 等: "车用发动机自动张紧器静态力学特性实测分析", 《力学与实践》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611493A (en) * | 2020-12-07 | 2021-04-06 | 潍柴动力股份有限公司 | Tensioner load calibration device and system and engine front end gear train |
| CN114088173A (en) * | 2021-11-10 | 2022-02-25 | 郑州业伟实业有限公司 | Overload-proof excavator weighing device |
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Application publication date: 20201124 |