CN107883911B - Rotatable lever measuring device - Google Patents

Rotatable lever measuring device Download PDF

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Publication number
CN107883911B
CN107883911B CN201711288647.9A CN201711288647A CN107883911B CN 107883911 B CN107883911 B CN 107883911B CN 201711288647 A CN201711288647 A CN 201711288647A CN 107883911 B CN107883911 B CN 107883911B
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China
Prior art keywords
clamping groove
pressing
rod
lever
power shaft
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CN201711288647.9A
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CN107883911A (en
Inventor
徐超
刘树林
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Nanjing Tops Automation Equipment Co ltd
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Nanjing Tops Automation Equipment Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/16Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects

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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 rotatable lever type measuring device which can realize dynamic measurement of a differential mechanism. The measuring device utilizes the lever to drive the tension rod connected with the upper half shaft gear of the differential to move up and down, utilizes the motor to drive the tension rod to rotate, and utilizes the sensor to measure displacement values when the upper half shaft gear is respectively positioned at an upper limit position and a lower limit position in a simulated working state of the differential.

Description

Rotatable lever measuring device
Technical Field
The invention belongs to the technical field of detection equipment, and particularly relates to a rotatable lever type measuring device.
Background
The differential mechanism can enable the left driving wheel and the right driving wheel to realize a mechanism rotating at different rotation speeds, and mainly comprises a left half shaft gear, a right half shaft gear, two planetary gears and a gear frame, wherein the parts are arranged in a differential mechanism shell. In order to prevent the gears from contacting the housing, excessive wear, and control the amount of gear shifting, shims are provided between the planetary gears and the transmission housing.
In the structure of the differential, the gap between the side gear and the housing is adjusted by the spacer, the thickness of the spacer determines the distribution of the planetary gears, and the assembly of the differential and the cooperation of the internal parts of the differential are affected, so that the gap value is an important index, and therefore, the measurement of the selected pad of the differential is very important. The conventional cushion selection measurement is static measurement, and the method is to measure the up-and-down displacement of the side gear by using a sensor by utilizing the up-and-down movement of the tensioning mechanism. However, the static measuring method can only measure the displacement of the gear at this position, while the displacement of the differential in the actual operating state is not known.
Disclosure of Invention
The invention aims to: the invention aims at overcoming the defects in the prior art, and provides a rotatable lever type measuring device, which can be used for realizing dynamic measurement of a differential mechanism selecting pad.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a rotatable lever type measuring device, comprising a base 1, wherein a first bracket 2, a second bracket 20, a sensor bracket 3 and a clamp are arranged on the base 1, a displacement sensor 4 is connected to the sensor bracket 3, and the displacement sensor 4 is used for measuring displacement; the device comprises a first bracket 2, a first support 6, a motor 9 and a lever rotating seat 22, wherein the center of the first bracket 6 is movably connected with a tension rod 7, a measuring block 5 is arranged at the part, below the mounting seat 6, of the tension rod 7, the head of a displacement sensor 4 is in contact with the measuring block 5 to measure the displacement of the measuring block 5, the end, below the mounting seat 6, of the tension rod 7 is a tension head, the end, above the mounting seat 6, of the tension rod 7 is connected with a tension rod clamping groove 26, the tension rod clamping groove 26 is provided with a clamping groove along the circumference, the upper part of the tension rod clamping groove 26 is connected with a pressing rod 10, the pressing rod 10 is movably connected with a pressing block 8, the upper end of the pressing rod 10 is connected with a contact block 12, a spring 11 is arranged between the pressing block 8 and the contact block 12, the pressing block 8 moves downwards under the action of the spring 11 to tightly press the tension rod clamping groove 26 so as to press the tension rod 7, the motor 9 is connected with the tension rod 7 through a transmission mechanism, and the tension rod 7 can be driven to rotate by the motor 9; the second support 20 is provided with a pressing plate support 16, a pressing cylinder 15 and a lowering cylinder 17, the pressing cylinder 15 is transversely placed, the pressing cylinder 15 is connected with a pressing plate 14, the pressing plate 14 is movably connected with the pressing plate support 16, the pressing plate 14 can rotate around the pressing plate support 16 under the pushing of the pressing cylinder 15, the pressing rod 10 is downwards pressed, the lowering cylinder 17 is connected with a power shaft 18, the power shaft 18 is vertically placed, the lower part of the power shaft 18 is connected with a lifting cylinder 23, the power shaft 18 is provided with a power shaft clamping groove 19, the power shaft clamping groove 19 is provided with a clamping groove around the circumference, two ends of the lever 21 are respectively connected with the power shaft clamping groove 19 and the clamping groove on the tensioning rod clamping groove 26 through levers 21, the middle part of each lever 21 is movably connected with the lever rotating seat 22, and each lever 21 can rotate around the lever rotating seat 22.
As an improvement of the scheme, the tensioning rod 7 is connected with the mounting seat 6 through a bearing.
As an improvement of the scheme, the motor 9 and the tensioning rod 7 are in transmission through gear connection.
As a modification of the present solution, the pressing plate 14 is provided with a roller 13, and the roller 13 is in contact with the contact block 12.
As an improvement of the scheme, two ends of the lever 21 are connected with a follow-up bearing 29 and are respectively and movably connected with the power shaft clamping groove 19 and the clamping groove on the tensioning rod clamping groove 26 through the follow-up bearing 29.
As a modification of the present solution, the power shaft 18 is connected to the lowering cylinder 17 and the lifting cylinder 23 by springs.
As an improvement of the scheme, the clamp is a pneumatic clamp.
As an improvement of the scheme, a transmission device between the motor 9 and the tensioning rod 7 is arranged between the tensioning rod clamping groove 26 and the mounting seat 6.
The beneficial effects are that: when the rotatable lever type measuring device is used, the differential 24 is fixed in a clamp, the compression cylinder 15 works to push the compression plate 14 to rotate and compress the compression rod 10, the compression rod 10 moves downwards to push the tension rod 7 to move downwards, the head of the tension rod 7 stretches into the differential 24 to be in tension combination with the upper side gear 242, at the moment, the upper side gear 242 and the tension rod 7 can be regarded as a whole, then the cylinder 17 works to be lowered to push the power shaft 18 to move downwards, the power shaft 18 drives the lever 21 to rotate anticlockwise around the lever rotating seat 22, one end of the lever 21 connected with the tension rod clamping groove 26 is lifted, so that the tension rod 7 is driven to rise, the upper side gear 242 in the differential 24 is driven to move upwards due to the upward force, the upper side gear 242 contacts the shell 241 and stays at the upper limit position, the motor 9 is started, the motor drives the tension rod 7 to rotate, the displacement sensor 4 measures the position of the measuring block 5, and after the rotation is stabilized, the displacement sensor 4 measures the displacement value of the upper limit position. After the dynamic measurement of the upper limit position is finished, the upper limit position is switched to the lower limit position for measurement, the motor 9 is stopped, the tension rod 7 is stopped rotating, the lifting cylinder 23 works to drive the power shaft 18 to move upwards, the power shaft 18 drives the lever 21 to rotate clockwise around the lever rotating seat 22, one end of the lever 21 connected with the tension rod clamping groove 26 descends, the tension rod 7 is driven to descend, the upper half-circle gear 242 in the differential 24 receives downward force to move downwards, the upper half-axle gear 242 moves downwards until contacting and pressing the planetary gear 243 and stopping, the motor 9 is started at the lower limit position, the motor 9 drives the tension rod 7 to rotate, the displacement sensor 4 measures the position of the measuring block 5 at the moment, and after the rotation is stable, the displacement sensor 4 measures the displacement value of the lower limit position, and finally the measurement process is completed.
The power shaft 18 is connected with the lowering cylinder 17 and the lifting cylinder 23 through springs, so that uneven power transmission caused by hard connection between power mechanisms is avoided, and the power transmission is more stable.
The contact parts of the two ends of the lever 21 and the clamping grooves are connected with the follow-up bearings 29, so that the tension rod 7 is always stressed in the vertical direction and the eccentric problem is avoided.
The transmission device between the motor 9 and the tension rod 7 is arranged below the tension rod clamping groove 26, so that the tension rod 7 cannot be deflected by left and right force when rotating, concentricity of the tension rod 7 and the upper half shaft gear 242 in the differential mechanism 24 during measurement is further ensured, and measurement stability and accuracy are improved.
The rotatable lever type measuring device can realize dynamic measurement of the differential mechanism, and the obtained measured value is closer to the actual value of the differential mechanism in the actual working state, thereby being beneficial to improving the accuracy of selecting the pad.
Drawings
FIG. 1 is a schematic view of a rotatable lever type measuring device;
FIG. 2 is an enlarged, partial cross-sectional view of the mount;
FIG. 3 is an enlarged, partially cut-away view of the differential;
List of reference numerals: 1. the device comprises a base, 2, a first support, 3, a sensor support, 4, a displacement sensor, 5, a measuring block, 6, a mounting seat, 7, a tensioning rod, 8, a pressing block, 9, a motor, 10, a pressing rod, 11, a spring, 12, a contact block, 13, a roller, 14, a pressing plate, 15, a pressing cylinder, 16, a pressing plate support, 17, a lowering cylinder, 18, a power shaft, 19, a power shaft clamping groove, 20, a second support, 21, a lever, 22, a lever rotating seat, 23, a lifting cylinder, 24, a differential, 26, a tensioning rod clamping groove, 27, a driving gear, 28, a driven gear, 29, a follow-up bearing, 61, a mounting seat shell, 62, a mounting seat inner bushing, 63, a bearing, 241, a shell, 242, an upper half-axle gear, 243, a planetary gear, 244 and a measured gasket, 245 and a planetary gear shaft.
Detailed Description
The invention will be further elucidated with reference to the drawings in combination with embodiments, it being understood that the following embodiments are only illustrative of the invention and are not intended to limit the scope of the invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
A rotatable lever type measuring apparatus as shown in fig. 1 includes a base 1, and a first bracket 2, a second bracket 20, a sensor bracket 3, and a jig are provided on the base 1. The clamp is a pneumatic clamp. The sensor bracket 3 is connected with a displacement sensor 4, and the displacement sensor 4 is used for measuring displacement. The first bracket 2 is provided with a mounting seat 6, a motor 9 and a lever rotating seat 22, a tensioning rod 7 is movably connected to the center of the mounting seat 6, a measuring block 5 is arranged on the part, below the mounting seat 6, of the tensioning rod 7, and a head measuring head of the displacement sensor 4 is in contact with the measuring block 5 to measure the displacement of the measuring block 5. The end of the tensioning rod 7 below the mounting seat 6 is a tensioning head, the end of the tensioning rod 7 above the mounting seat 6 is connected with a tensioning rod clamping groove 26, the clamping groove 26 is provided with a clamping groove along the circumference, the upper part of the tensioning rod clamping groove 26 is connected with a pressing rod 10, the pressing rod 10 is movably connected with a pressing block 8, the upper end of the pressing rod 10 is connected with a contact block 12, a spring 11 is arranged between the pressing block 8 and the contact block 12 on the pressing rod 10, and the pressing block 8 moves downwards under the action of the spring 11 to tightly cling to the tensioning rod clamping groove 26 so as to press the tensioning rod 7. The motor 9 is connected with the tension rod 7 through a transmission mechanism, and the tension rod 7 can be driven to rotate by the motor 9. The second support 20 is provided with a pressing plate support 16, a pressing cylinder 15 and a lowering cylinder 17, the pressing cylinder 15 is transversely arranged, the pressing cylinder 15 is connected with a pressing plate 14, the pressing plate 14 is movably connected with the pressing plate support 16, the pressing plate 14 is provided with a roller 13, the roller 13 is in contact with the contact block 12, and the pressing plate 14 can rotate around the pressing plate support 16 under the pushing of the pressing cylinder 15 to press the pressing rod 10 downwards. The lowering cylinder 17 is connected with a power shaft 18, the power shaft 18 is vertically arranged, the lower part of the power shaft 18 is connected with a lifting cylinder 23, the power shaft 18 is connected with the lowering cylinder 17 and the lifting cylinder 23 through springs, the power shaft 18 is provided with a power shaft clamping groove 19, the power shaft clamping groove 19 is provided with clamping grooves around the circumference, the power shaft clamping groove 19 and the tensioning rod clamping groove 26 are connected through a lever 21, two ends of the lever 21 are respectively and movably connected with the clamping grooves on the power shaft clamping groove 19 and the tensioning rod clamping groove 26, the middle part of the lever 21 is movably connected with the lever rotating seat 22, and the lever 21 can rotate around the lever rotating seat 22.
As shown in fig. 2, a transmission device between the motor 9 and the tensioning rod 7 is arranged between the tensioning rod clamping groove 26 and the mounting seat 6, the transmission device is a gear, the output end of the motor 9 is connected with a driving gear 27, the tensioning rod 7 is connected with a driven gear 28, and the driving gear 27 is meshed with the driven gear 28. The mount 6 includes a mount housing 61, a mount inner bush 62 and a bearing, the mount housing 61 is connected with the first bracket 2, the mount inner bush 62 is connected with the tension rod 7, and the mount housing 61 is connected with the mount inner bush 62 through the bearing 63. The two ends of the lever 21 are connected with a follow-up bearing 29 and are respectively and movably connected with the power shaft clamping groove 19 and the clamping groove on the tensioning rod clamping groove 26 through the follow-up bearing 29.
The differential 24 is structured as shown in fig. 3, and includes a housing 241, an upper side gear 242, planetary gears 243, a spacer 244 to be tested, and planetary gear shafts 245.
In actual measurement, the differential 24 is fixed in a fixture, the planetary gear 243 is provided with the planetary gear shaft 245, the outer side of the planetary gear 243 is provided with the measured gasket, the compressing cylinder 15 works to push the compressing plate 14 to rotate to compress the compression bar 10, the compression bar 10 moves downwards to push the tension bar 7 to move downwards, the head of the tension bar 7 stretches into the differential 24 to be in tension combination with the upper side gear 242, at the moment, the upper side gear 242 and the tension bar 7 can be regarded as a whole, then the cylinder 17 works to be lowered, the power shaft 18 moves downwards, the power shaft 18 drives the lever 21 to rotate anticlockwise around the lever rotating seat 22, one end, connected with the clamping groove 26 of the tension bar, of the lever 21 is lifted, so that the tension bar 7 is driven to rise, the upper side gear 242 in the differential 24 moves upwards to enable the upper side gear 242 to be in contact with the shell 241 to stay at the upper limit position, at the moment, the motor 9 is started to drive the tension bar 7 to rotate, at the moment, the displacement sensor 4 measures the position of the measuring block 5, and after rotation is stabilized, the displacement value of the upper limit position is measured by the displacement sensor 4. After the dynamic measurement of the upper limit position is completed, the motor 9 is stopped, the tension rod 7 stops rotating, the lifting cylinder 23 works to drive the power shaft 18 to move upwards, the power shaft 18 drives the lever 21 to rotate clockwise around the lever rotating seat 22, one end of the lever 21 connected with the tension rod clamping groove 26 descends, thereby driving the tension rod 7 to descend, the upper half-circle gear 242 in the differential 24 receives downward force to move downwards, the upper half-axle gear 242 moves downwards to contact with the planetary gear 243, the planetary gear 243 receives transverse force to move to two sides until the planetary gear 243, the measured gasket 244 and the shell 241 are tightly contacted, at the moment, the upper half-axle gear 242 stays at the lower limit position, the motor 9 starts to drive the tension rod 7 to rotate, the displacement sensor 4 measures the position of the measured 5, after the rotation is stabilized, the displacement sensor 4 measures the displacement value of the lower limit position, finally, the measurement process is completed, the displacement value measured when the displacement sensor 4 is positioned at the upper half-axle gear 242 is positioned at the upper limit position and the lower limit position, the differential 24 receives the lateral force to move to two sides until the planetary gear 243 is tightly contacted with the shell 241, the gap is selected according to the accurate installation gap between the gasket and the shell.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features.

Claims (8)

1. The rotatable lever type measuring device is characterized by comprising a base (1), wherein a first bracket (2), a second bracket (20), a sensor bracket (3) and a clamp are arranged on the base (1), a displacement sensor (4) is connected to the sensor bracket (3), and the displacement sensor (4) is used for measuring displacement; the device is characterized in that a mounting seat (6), a motor (9) and a lever rotating seat (22) are arranged on the first support (2), a tensioning rod (7) is movably connected to the center of the mounting seat (6), a pressing block (8) is movably connected to the lower portion of the mounting seat (6), a contact block (12) is connected to the upper end of the pressing rod (10), a spring (11) is arranged between the pressing block (8) and the contact block (12), the tensioning rod (7) is arranged at the lower end of the mounting seat (6) and is a tensioning head, a tensioning rod clamping groove (26) is connected to the upper end of the mounting seat (6), a clamping groove (26) is formed in one circle along the circumference, a pressing rod (10) is connected to the upper portion of the tensioning rod clamping groove (26), a pressing block (8) is movably connected to the upper end of the pressing rod (10), a contact block (12) is connected to the upper end of the pressing rod (10), a spring (11) is arranged between the pressing block (8) and the contact block (12), and the pressing block (8) is positioned at the lower end of the spring (11) and is connected to the tensioning rod (7) under the action of the motor (6), and the tensioning rod (7) can be tightly pressed against the tensioning rod (9) through the tensioning mechanism; the second support (20) is provided with a pressing plate support (16), a pressing cylinder (15) and a lowering cylinder (17), the pressing cylinder (15) is transversely arranged, the pressing cylinder (15) is connected with a pressing plate (14), the pressing plate (14) is movably connected with the pressing plate support (16), the pressing plate (14) can rotate around the pressing plate support (16) under the pushing of the pressing cylinder (15), the pressing rod (10) is downwards pressed, the lowering cylinder (17) is connected with a power shaft (18), the power shaft (18) is vertically arranged, the lower part of the power shaft (18) is connected with a lifting cylinder (23), a power shaft clamping groove (19) is formed in the power shaft (18) in a circle, the power shaft clamping groove (19) is connected with a tensioning rod clamping groove (26) through a lever (21), two ends of the lever (21) are respectively movably connected with the clamping groove (19) and the clamping groove on the tensioning rod clamping groove (26), the middle part of the lever (21) is connected with the lever seat (22) in a movable mode, and the lever seat (22) can rotate around the lever seat (22); a differential (24) is fixed in the clamp.
2. A rotatable lever type measuring apparatus according to claim 1, wherein: the tensioning rod (7) is connected with the mounting seat (6) through a bearing.
3. A rotatable lever type measuring apparatus according to claim 2, wherein: the motor (9) is connected with the tensioning rod (7) through a gear for transmission.
4. A rotatable lever-type measuring device according to claim 3, wherein: the pressing plate (14) is provided with a roller (13), and the roller (13) is contacted with the contact block (12).
5. A rotatable lever type measuring apparatus as claimed in claim 4, wherein: the two ends of the lever (21) are connected with a follow-up bearing (29) and are respectively and movably connected with the power shaft clamping groove (19) and the clamping groove on the tensioning rod clamping groove (26) through the follow-up bearing (29).
6. A rotatable lever type measuring apparatus as claimed in claim 5, wherein: the power shaft (18) is connected with the lowering cylinder (17) and the lifting cylinder (23) through springs.
7. A rotatable lever type measuring apparatus as claimed in claim 6, wherein: the clamp is a pneumatic clamp.
8. A rotatable lever type measuring apparatus as claimed in claim 7, wherein: the transmission device between the motor (9) and the tensioning rod (7) is arranged between the tensioning rod clamping groove (26) and the mounting seat (6).
CN201711288647.9A 2017-12-07 2017-12-07 Rotatable lever measuring device Active CN107883911B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201711288647.9A CN107883911B (en) 2017-12-07 2017-12-07 Rotatable lever measuring device

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CN107883911B true CN107883911B (en) 2024-06-04

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109238207B (en) * 2018-09-26 2024-02-23 江苏上汽汽车变速器有限公司 Dynamic differential axial clearance measuring instrument and measuring method thereof
CN109489596B (en) * 2018-10-10 2019-07-12 南京马波斯自动化设备有限公司 Internal Spherical Surface measuring mechanism
CN113984357B (en) * 2021-10-20 2022-10-21 江苏太平洋齿轮传动有限公司 Detection system and detection method for differential assembly
CN116147561B (en) * 2023-04-20 2023-08-11 南京泰普森自动化设备有限公司 Gear shaft height measuring device and measuring method

Citations (5)

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Publication number Priority date Publication date Assignee Title
KR20120065531A (en) * 2010-12-13 2012-06-21 한국생산기술연구원 Measuring apparatus for measuring height of object using displacement sensor
CN203298752U (en) * 2013-05-31 2013-11-20 天津锐意泰克汽车电子有限公司 Displacement detection device used for detecting size of housing of camshaft position sensor
CN206430675U (en) * 2017-01-17 2017-08-22 宁夏菲斯克汽车轮毂轴承有限公司 A kind of automatic detection device of bearing axial play
JP2017166912A (en) * 2016-03-15 2017-09-21 トヨタ自動車株式会社 Device for measuring range of motion of side gears in differential unit
CN207600432U (en) * 2017-12-07 2018-07-10 南京泰普森自动化设备有限公司 A kind of rotatable lever measuring device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120065531A (en) * 2010-12-13 2012-06-21 한국생산기술연구원 Measuring apparatus for measuring height of object using displacement sensor
CN203298752U (en) * 2013-05-31 2013-11-20 天津锐意泰克汽车电子有限公司 Displacement detection device used for detecting size of housing of camshaft position sensor
JP2017166912A (en) * 2016-03-15 2017-09-21 トヨタ自動車株式会社 Device for measuring range of motion of side gears in differential unit
CN206430675U (en) * 2017-01-17 2017-08-22 宁夏菲斯克汽车轮毂轴承有限公司 A kind of automatic detection device of bearing axial play
CN207600432U (en) * 2017-12-07 2018-07-10 南京泰普森自动化设备有限公司 A kind of rotatable lever measuring device

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