CN109556560B - Shift fork foot deflection testing arrangement - Google Patents
Shift fork foot deflection testing arrangement Download PDFInfo
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- CN109556560B CN109556560B CN201811456876.1A CN201811456876A CN109556560B CN 109556560 B CN109556560 B CN 109556560B CN 201811456876 A CN201811456876 A CN 201811456876A CN 109556560 B CN109556560 B CN 109556560B
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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
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device for testing deformation of a fork foot of a gear shifting fork, which comprises: the device comprises a base, a first clamp and a second clamp, wherein one end of the top surface of the base is provided with a box body, and the outer side wall of the box body is provided with the first clamp; the base body is arranged on the top surface of the base body, the first clamp faces the base body, and a second clamp opposite to the first clamp is arranged on the side surface of the base body; the power executing mechanism is arranged in the box body and provided with two rods which can stretch out and draw back along the horizontal direction, fork foot fixing devices are arranged on the two rods, and force sensors are arranged in the fork foot fixing devices; and the two displacement measuring devices are fixed on the base and used for measuring the displacement of the two fork foot fixing devices. The invention can simply, conveniently, quickly and accurately measure the deformation of the fork foot of the gear shifting fork.
Description
Technical Field
The invention relates to a testing device, in particular to a device for testing deformation of a fork foot of a shifting fork of a transmission.
Background
The transmission shifting fork is an actuating mechanism for realizing the gear switching of the transmission, and the rigidity of a shifting fork foot structure is one of important indexes of the structural design of the shifting fork. The rigidity of the fork foot of the shifting fork directly reflects the deformation of the fork foot under the condition of certain concentrated force, and the deformation of the fork foot of the shifting fork can be quickly and accurately measured through a testing device.
The testing device in the prior art comprises a clamping mechanism, a tension machine connecting rod structure, a disc structure and a base, wherein the clamping mechanism and the tension machine connecting rod structure are connected with the base, a shifting fork is installed in the clamping mechanism and is fixedly clamped, the disc structure is installed on a tension machine connecting rod and is used for applying load to a shifting fork pin, a certain gap exists between the disc structure and the tension machine connecting rod in a matched mode, and the disc structure can realize small radial play on the tension machine connecting rod. When a certain load is applied to the connecting rod of the tensile machine in one direction, the shifting fork legs have different rigidity to push the disk to slightly shift in the radial direction, and the axial maximum displacement of the two fork legs is picked up through the displacement measuring devices respectively to obtain the deformation of the fork legs at two sides.
The method for measuring the deformation of the two fork legs of the shifting fork by adopting the method for applying load to the two fork legs of the shifting fork by dragging the disc structure by the tension machine connecting rod has inevitable large error.
Firstly, a single tensile machine connecting rod applies load through a disc structure, the load distributed to two fork legs cannot be balanced, and an error exists in the difference of the deformation of the two fork legs of the shifting fork;
secondly, the displacement difference of the two fork legs is influenced by the radial play of the disc, which may cause that the deformation measured by the left fork leg and the right fork leg is not a real value, resulting in serious random error or even error.
Disclosure of Invention
The invention aims to provide a device for testing deformation of a fork foot of a gear shifting fork, which is used for solving the defects in the prior art and can simply, conveniently, quickly and accurately measure the deformation of the fork foot of the gear shifting fork.
The invention provides a device for testing deformation of a fork foot of a gear shifting fork, which comprises:
the device comprises a base, a first clamp and a second clamp, wherein one end of the top surface of the base is provided with a box body, and the outer side wall of the box body is provided with the first clamp;
the base body is arranged on the top surface of the base body, the first clamp faces the base body, and a second clamp opposite to the first clamp is arranged on the side surface of the base body;
the power executing mechanism is arranged in the box body and provided with two rods which can stretch out and draw back along the horizontal direction, fork foot fixing devices are arranged on the two rods, and force sensors are arranged in the fork foot fixing devices;
and the two displacement measuring devices are fixed on the base and used for measuring the displacement of the two fork foot fixing devices.
In the aforementioned shift fork foot deformation amount testing device, preferably, a rail arranged along a length direction of the base is disposed on a top surface of the base, and the bottom of the seat body is in sliding fit with the rail.
In the aforementioned shift fork foot deformation amount testing device, preferably, the first clamp and the second clamp have the same structure, and both have an installation groove and a locking rod, the locking rod is in threaded connection with the side wall of the installation groove.
In the aforementioned gear shift fork foot deformation amount testing device, preferably, the power executing mechanism includes a first hydraulic oil chamber and a second hydraulic oil chamber and a main oil chamber, the main oil chamber with the first hydraulic oil chamber with the second hydraulic oil chamber intercommunication, install the solenoid valve on the main oil chamber, two the pole respectively with the first hydraulic oil chamber with the second hydraulic oil chamber is installed together.
In the aforementioned device for testing deformation of a fork foot of a gear shifting fork, preferably, the power executing mechanism includes two sets of cylinders, and the two rods are respectively two sets of telescopic rods of the cylinders.
In the aforementioned device for testing deformation of a fork foot of a shift fork, preferably, the power executing mechanism includes two sets of electric push-pull rods, and the two rods are respectively two sets of telescopic rods of the electric push-pull rods.
Compared with the prior art, the invention comprises the following steps: the device comprises a base, a seat body, a power executing mechanism and a displacement measuring device. A box body is arranged at one end of the top surface of the base, and a first clamp is formed on the outer side wall of the box body; the base body is arranged on the top surface of the base body, and the side surface of the base body is provided with a second clamp which is arranged opposite to the first clamp; the power executing mechanism is arranged in the box body and is provided with two rods which can stretch out and draw back along the horizontal direction, fork foot fixing devices are arranged on the two rods, and force sensors are arranged in the fork foot fixing devices; the two displacement measuring devices are fixed on the base and used for measuring the displacement of the two fork foot fixing devices. According to the invention, through the cooperation of the power executing mechanism, the fork foot fixing device and the force sensor, the problem of unbalanced stress on the two fork feet of the shifting fork can be effectively solved, so that the two fork feet are stressed in a balanced manner, and the measurement precision of the deformation of the fork feet of the shifting fork is improved.
Drawings
FIG. 1 is an isometric view of the overall structure of the present invention;
fig. 2 is a cross-sectional view of a portion of the structure of the present invention.
Description of reference numerals: 1-base, 2-track, 3-box, 4-first clamp, 5-seat, 6-second clamp, 7-power actuator, 8-rod, 9-fork foot fixing device, 10-force sensor, 11-displacement measuring device, 12-mounting groove, 13-locking rod, 14-first hydraulic oil chamber, 15-second hydraulic oil chamber, 16-main oil chamber, 17-solenoid valve.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The embodiment of the invention comprises the following steps: as shown in fig. 1 and 2, a shift fork foot deformation amount testing device includes: the device comprises a base 1, a seat body 5, a power executing mechanism 7 and a displacement measuring device 11. A base 1, wherein one end of the top surface of the base is provided with a box body 3, and the outer side wall of the box body 3 is provided with a first clamp 4; the base body 5 is arranged on the top surface of the base body 1, the first clamp 4 is arranged towards the base body 5, and the side surface of the base body 5 is provided with a second clamp 6 which is arranged opposite to the first clamp 4; the power executing mechanism 7 is arranged in the box body 3 and is provided with two rods 8 which can stretch out and draw back along the horizontal direction, fork foot fixing devices 9 are arranged on the two rods 8, and force sensors 10 are arranged in the fork foot fixing devices 9; and two displacement measuring devices 11 are fixed on the base 1 and used for measuring the displacement of the two fork foot fixing devices 9.
When the deformation of the fork legs of the gear shifting fork is measured, the two fork legs of the gear shifting fork are firstly clamped into the two fork leg fixing devices 9 respectively, then two ends of the upper portion of the gear shifting fork are fixed in the first clamp 4 and the second clamp 6 respectively, the power executing mechanism 7 is started after the two fork legs are fixed, the power executing mechanism 7 starts to drive the two rods 8, the two rods 8 exert thrust on the two fork legs of the gear shifting fork through the two fork leg fixing devices 9 respectively, the thrust magnitude received by the fork legs is measured by the force sensors 10 in the two fork leg fixing devices 9 and fed back to the control device, the control device adjusts the thrust magnitude of the two rods 8 according to data, the thrust received by the two fork legs of the gear shifting fork is equal, and the maximum axial deformation of the two fork legs is obtained through the displacement measuring device 11 after the system is stable.
In a specific embodiment, the top surface of the base 1 is provided with two rails 2 arranged along the length direction thereof, and the bottom of the seat body 5 is in sliding fit with the rails 2. Through the structural design, the gear shifting fork is suitable for gear shifting forks of different specifications, and the application range is widened.
Further, the first clamp 4 and the second clamp 6 are identical in structure and are provided with a mounting groove 12 and a locking rod 13, and the locking rod 13 is in threaded connection with the side wall of the mounting groove 12. The opening of mounting groove 12 sets up to in mounting groove 12 is installed to the upper portion that will shift the shift fork, will shift the shift fork through rotatory locking lever 13 after the installation and fix on first anchor clamps 4 and second anchor clamps 6. Of course, in addition to this structure, the first clamp 4 and the second clamp 6 may also adopt an electric automatic clamping structure, but the automatic clamping requires the installation of precision parts such as an air cylinder, and the manufacturing cost is high.
The power executing mechanism 7 is explained in detail below, the structure of the power executing mechanism 7 can be various, the invention provides three realizable structure forms,
the structure I is as follows: as shown in fig. 2, the power actuator 7 includes a first hydraulic oil chamber 14, a second hydraulic oil chamber 15 and a main oil chamber 16, the main oil chamber 16 is communicated with the first hydraulic oil chamber 14 and the second hydraulic oil chamber 15, a solenoid valve 17 is mounted on the main oil chamber 16, and the two rods 8 are respectively mounted with the first hydraulic oil chamber 14 and the second hydraulic oil chamber 15. Only some of the structures are shown above, and those skilled in the art can know that the hydraulic system naturally further includes a hydraulic oil tank, a hydraulic oil pump, a hydraulic controller, etc. to control the working state of the main oil chamber 16 through the solenoid valve 17, so as to control the working state of the two rods 8.
The structure II is as follows: the power executing mechanism 7 is provided with two sets of cylinders, and the two rods 8 are respectively telescopic rods of the two sets of cylinders. It will be appreciated by those skilled in the art that the use of a gas cylinder will necessarily also have a gas source, a gas pump and a controller. This technique is prior art and will not be described again.
The structure is three: the power executing mechanism 7 is two sets of electric push-pull rods, and the two rods 8 are respectively telescopic rods of the two sets of electric push-pull rods. The electric push-pull rod structure is also the prior art, and the most space-saving scheme is adopted in the three schemes, but the scheme is also the scheme with the highest manufacturing cost.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (5)
1. The utility model provides a gear shift fork prong deflection testing arrangement which characterized in that includes:
the device comprises a base (1), wherein a box body (3) is arranged at one end of the top surface of the base, and a first clamp (4) is formed on the outer side wall of the box body (3);
the base comprises a base body (5), wherein a track (2) arranged along the length direction of the base is arranged on the top surface of the base (1), the bottom of the base body (5) is in sliding fit with the track (2), the first clamp (4) faces the base body (5), and a second clamp (6) arranged opposite to the first clamp (4) is arranged on the side surface of the base body (5);
the power executing mechanism (7) is arranged in the box body (3) and is provided with two rods (8) which can stretch out and draw back along the horizontal direction, fork foot fixing devices (9) are respectively arranged on the two rods (8), and a force sensor (10) is arranged in each fork foot fixing device (9);
and two displacement measuring devices (11) are fixed on the base (1) and used for measuring the displacement of the two fork foot fixing devices (9).
2. The shift fork foot deformation amount test device according to claim 1, characterized in that: the first clamp (4) and the second clamp (6) are identical in structure and are provided with a mounting groove (12) and a locking rod (13), and the locking rod (13) is in threaded connection with the side wall of the mounting groove (12).
3. The shift fork foot deformation amount test device according to claim 1, characterized in that: the power execution mechanism (7) comprises a first hydraulic oil cavity (14), a second hydraulic oil cavity (15) and a main oil cavity (16), the main oil cavity (16) is communicated with the first hydraulic oil cavity (14) and the second hydraulic oil cavity (15), an electromagnetic valve (17) is installed on the main oil cavity (16), and the two rods (8) are respectively installed together with the first hydraulic oil cavity (14) and the second hydraulic oil cavity (15).
4. The shift fork foot deformation amount test device according to claim 1, characterized in that: the power executing mechanism (7) is provided with two sets of cylinders, and the two rods (8) are respectively telescopic rods of the two sets of cylinders.
5. The shift fork foot deformation amount test device according to claim 1, characterized in that: the power executing mechanism (7) is provided with two sets of electric push-pull rods, and the two rods (8) are respectively telescopic rods of the two sets of electric push-pull rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456876.1A CN109556560B (en) | 2018-11-30 | 2018-11-30 | Shift fork foot deflection testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456876.1A CN109556560B (en) | 2018-11-30 | 2018-11-30 | Shift fork foot deflection testing arrangement |
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| Publication Number | Publication Date |
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| CN109556560A CN109556560A (en) | 2019-04-02 |
| CN109556560B true CN109556560B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811456876.1A Active CN109556560B (en) | 2018-11-30 | 2018-11-30 | Shift fork foot deflection testing arrangement |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111036966B (en) * | 2019-12-30 | 2020-12-29 | 贵州友擘机械制造有限公司 | Clamping and fixing device for milling shifting fork |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201548452U (en) * | 2009-10-14 | 2010-08-11 | 长春科新试验仪器有限公司 | Following hydraulic chuck power source |
| KR101187535B1 (en) * | 2010-07-28 | 2012-10-02 | 현대위아 주식회사 | Test device of shift fork of manual transmission |
| CN103453826B (en) * | 2013-04-11 | 2016-02-03 | 浙江吉利汽车研究院有限公司杭州分公司 | A kind of pull-fork assembly comprehensive check tool |
| JP5764710B1 (en) * | 2014-12-02 | 2015-08-19 | 株式会社Ｎｔｔファシリティーズ | Displacement measuring device |
| CN204461299U (en) * | 2014-12-14 | 2015-07-08 | 綦江齿轮传动有限公司 | The cubing of gear shifting fork of speed-changing box |
| CN105136453B (en) * | 2015-09-30 | 2017-11-24 | 浙江万里扬股份有限公司 | A kind of transmission selector fork strength test system |
| CN205333307U (en) * | 2016-01-27 | 2016-06-22 | 长城汽车股份有限公司 | A experimental frock for shift fork capability test |
| CN205808706U (en) * | 2016-06-22 | 2016-12-14 | 南通信达诺测控技术有限公司 | A kind of assay device of the parking shift fork in automatic gearshift automobile vehicle gearbox |
| CN107063599A (en) * | 2017-04-24 | 2017-08-18 | 重庆理工大学 | A kind of stiffness test method of gearshift fork |
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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