CN214702070U

CN214702070U - Positive internal clearance measuring device based on displacement-torque measurement

Info

Publication number: CN214702070U
Application number: CN202023144440.4U
Authority: CN
Inventors: 李双; 黄德杰; 王青娣
Original assignee: Wanxiang Group Corp; Zhejiang Wanxiang Precision Industry Co Ltd
Current assignee: Wanxiang Group Corp; Zhejiang Wanxiang Precision Industry Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-11-12
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a positive play measuring device based on displacement-torque measurement, mainly include base etc, the cooperation of the rotatory ejector pin of screw thread is installed in the threaded hole at base center, the cooperation installation bottom pressure head in the rotatory ejector pin top of screw thread, the adjusting collar install in the top of base and cooperate with the big counter bore of base, the bearing inner race is installed on the adjusting collar, the gasket is placed on the adjusting collar, the annular briquetting is placed on bearing inner race and gasket, be equipped with the through-hole on the annular briquetting, the width of through-hole and the through-hole diameter phase-match on the adjusting collar, the annular briquetting runs through the location of bolt and through-hole and screws up on the adjusting collar, the pressure equipment quality piece is placed on the bearing ring flange, the displacement sensor axis coincides with wheel hub bearing unit's the central axis. The utility model creatively uses the method of combining the torque measurement and the displacement measurement, can be used for distinguishing the positive and negative clearance state of the bearing, and can directly measure the value of the positive clearance; the mechanism is simple, compact in structure and easy to operate.

Description

Positive internal clearance measuring device based on displacement-torque measurement

Technical Field

The utility model relates to a field of wheel hub bearing, concretely relates to positive play measuring device based on displacement-torque measurement.

Background

A hub bearing is an automotive component that carries weight and provides precise guidance for the rotation of the hub. The play of the hub bearing is usually measured with special equipment. The prior art device of patent application No. 201420743371.4 is structured as follows: the upper and lower supports are respectively fixed on the upper and lower sides of the workbench, the longitudinal lifting driving device can drive the outer ring positioning ring to descend the outer ring of the bearing, the upper pressurizing cylinder structure is fixedly connected with the outer ring positioning ring, the lower end of a piston rod of the upper pressurizing cylinder structure is fixedly connected with the upper inner ring pressure plate, the upper inner ring pressure plate can compress the upper end surface of the inner ring of the bearing, the upper end of a piston rod of the lower pressurizing cylinder structure is fixedly connected with the lower inner ring pressure plate, the lower inner ring pressure plate can compress the lower end surface of the inner ring of the bearing, and the measuring pen can continuously take values of the height of the upper end surface of the piston rod of the upper pressurizing cylinder structure and transmit the values to the control system. The prior art scheme mainly has the following defects: the structure is complex, and the occupied space of the whole frame is overlarge due to the fact that too many motion executing mechanisms need to be fixedly installed; and it cannot be judged whether the bearing is in the positive play or negative play state.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a positive play measuring device based on displacement-torque measurement.

The purpose of the utility model is accomplished through following technical scheme: the positive clearance measuring device based on displacement-torque measurement mainly comprises a displacement sensor fixing support, a displacement sensor, a press-mounting mass block, a bearing flange, a bearing outer ring, a bolt, an annular pressing block, a gasket, an adjusting sleeve, a bearing inner ring, a bottom pressing head, a thread rotating ejector rod, a base and a torque wrench, wherein the thread rotating ejector rod is installed in a threaded hole in the center of the base in a matching manner, the bottom pressing head is installed at the top end of the thread rotating ejector rod in a matching manner, the adjusting sleeve is installed above the base and matched with a large counter bore of the base, the bearing flange is installed in a bearing formed by the bearing inner ring and the bearing outer ring, the bearing flange, the bearing inner ring and the bearing outer ring are hub bearing units, the bearing outer ring is installed on the adjusting sleeve, an installation surface of the bearing outer ring is matched with a central round hole of the adjusting sleeve, a step at the top end of the bottom pressing head is matched with an inner hole of the bearing flange, the gasket is placed on the adjusting sleeve, the annular briquetting is placed on bearing inner race and gasket, be equipped with the through-hole on the annular briquetting, the width of through-hole and the through-hole diameter phase-match on the adjustment cover, the annular briquetting runs through the location of bolt and through-hole and screws up on the adjustment cover, the pressure equipment quality piece is placed on the bearing flange, displacement sensor installs on the displacement sensor fixed bolster, the rigidity of displacement sensor fixed bolster, the displacement sensor axis coincides with the central axis of wheel hub bearing unit, the measuring head of displacement sensor bottom is relative with the circular shallow slot at pressure equipment quality piece upper portion center, and keep in contact throughout and measure, the rotatory ejector pin of screw thread is supporting to be equipped with torque wrench.

The tail end of the thread rotating ejector rod is a hemispherical protrusion and is matched with a hemispherical groove at the lower end of the bottom pressure head, the radius of the hemispherical groove of the bottom pressure head is larger than that of the hemispherical protrusion of the thread rotating ejector rod, and matching centering is formed between the thread rotating ejector rod and the hemispherical protrusion.

The through hole on the annular pressing block is in a long strip shape.

And a circular groove is dug at the bottom of the bearing flange and matched with the flange plate mounting surface of the press-mounting mass block.

The utility model has the advantages that: the utility model discloses creatively use the method that torque measurement and displacement measurement combined together, to third generation wheel hub bearing unit, can be used for distinguishing the positive negative play state of bearing, can directly measure the numerical value of positive play simultaneously, can be used to the detection after the product manufacturing is accomplished, whether the play to the product is in the design range to aassessment, be favorable to the analysis and research after the product inefficacy of the control of product quality; the mechanism is simple, can be manually installed and disassembled, has compact structure, is easy to operate, occupies small space and is suitable for various occasions.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Description of reference numerals: the device comprises a displacement sensor fixing support 1, a displacement sensor 2, a press-fitting mass block 3, a bearing flange 4, a bearing outer ring 5, a bolt 6, an annular pressing block 7, a gasket 8, an adjusting sleeve 9, a bearing inner ring 10, a bottom pressing head 11, a threaded rotating ejector rod 12, a base 13 and a torque wrench 14.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawing, the positive play measuring device based on displacement-torque measurement mainly comprises a displacement sensor fixing support 1, a displacement sensor 2, a press-fitting mass block 3, a bearing flange 4, a bearing outer ring 5, a bolt 6, an annular pressing block 7, a gasket 8, an adjusting sleeve 9, a bearing inner ring 10, a bottom pressure head 11, a thread rotating ejector rod 12, a base 13 and a torque wrench 14, wherein the thread rotating ejector rod 12 is installed in a threaded hole in the center of the base 13 in a matched mode, the thread rotating ejector rod 12 moves up and down through rotation, the bottom pressure head 11 is installed at the top end of the thread rotating ejector rod 12 in a matched mode, the tail end of the thread rotating ejector rod 12 is a hemispherical bulge and matched with a hemispherical groove at the lower end of the bottom pressure head 11, the radius of the hemispherical groove of the bottom pressure head 11 is larger than that of the thread rotating ejector rod 12, and matched and centered is formed between the bottom pressure head and the bottom pressure head. The adjusting sleeve 9 is arranged above the base 13 and matched with a large counter bore of the base 13, the adjusting sleeve 9 is provided with four through holes, the size and the position of the through holes correspond to four threaded holes on the base 13, bolt connection can be realized, the bearing flange 4 is arranged in a bearing formed by a bearing inner ring 10 and a bearing outer ring 5, the bearing flange 4, the bearing inner ring 10 and the bearing outer ring 5 are hub bearing units, the bearing outer ring 5 is arranged on the adjusting sleeve 9, the mounting surface of the bearing outer ring 5 is matched with a central round hole of the adjusting sleeve 9 to realize the mounting and the positioning of the hub bearing units, the step at the top end of the bottom pressure head 11 is matched with an inner hole of the bearing flange 4, the gasket 8 is arranged on the adjusting sleeve 9, the annular pressing block 7 is arranged on the bearing outer ring 5 and the gasket 8, the annular pressing block 7 is provided with the through holes, the width of the through holes is matched with the diameter of the through holes on the adjusting sleeve 9, and the annular pressing block 7 is screwed on the adjusting sleeve 9 through the bolts 6 and the positioning of the through holes, the through hole on the annular pressing block 7 is in a long strip shape, so that the left and right positions of the annular pressing block 7 can be adjusted to be matched with the size of the hub bearing unit. The bearing outer ring 5 is fixed on the adjusting sleeve 9 and does not move, the press-fitting mass block 3 is placed on the bearing flange 4, a circular groove is dug at the bottom of the bearing flange 4, and the circular groove is matched with a flange plate mounting surface of the press-fitting mass block 3. The displacement sensor 2 is installed on the displacement sensor fixing support 1, the position of the displacement sensor fixing support 1 is fixed, the axis of the displacement sensor 2 is overlapped with the central axis of the hub bearing unit, a measuring head at the bottom of the displacement sensor 2 is opposite to a round shallow groove at the center of the upper part of the press-mounting mass block 3 and is always kept in contact for measurement, and the threaded rotary ejector rod 12 is matched with the torque wrench 14.

The utility model discloses the working process:

the utility model discloses the equipment is accomplished the back, with displacement sensor 2 and torque wrench 14's demonstration numerical value zero clearing, uses torque wrench 14 to remove to twist reverse the rotatory ejector pin 12 of screw thread to drive bottom pressure head 11 and realize vertical ascending displacement motion. The bottom pressure head 11 continuously moves upwards until the step part above the bottom pressure head is contacted with the bearing inner ring 10, and the bearing inner ring 10 and the bearing flange 4 are combined together to form an integral upward movement due to the matching between the bearing inner ring 10 and the bearing flange 4, so that the press-mounting mass block 3 pressed on the bearing flange 4 also realizes the same displacement, and the displacement is collected and recorded by the displacement sensor 2 in real time. In the whole process of test measurement, the torque wrench 14 also displays and records the torque value required by twisting the threaded rotating ejector rod 12 in real time, when the rotating torque reaches a certain value, the twisting is stopped, and the value displayed on the displacement sensor 2 is the positive clearance value of the hub bearing unit.

The utility model discloses an analysis of test result and evaluation:

the utility model discloses can be used for differentiateing positive, the negative play state that the play of wheel hub bearing located, if wheel hub bearing unit is in positive play state, there is the clearance between the outer raceway of raceway and bearing inner race 5, the rolling element in the bearing that also is bearing flange 4 and bearing inner race 10 formed, under this condition, contact when bottom pressure head 11 and bearing inner race 10 and begin to produce the displacement, and when being detected the record by displacement sensor 2, the numerical value that shows on the torque wrench 14 is very little, and keep unchangeable in certain displacement range. If the hub bearing unit is in a negative play state, that is, there is a squeeze between the bearing inner raceway formed by the bearing flange 4 and the bearing inner ring 10 and the outer raceway of the bearing outer ring 5, the rolling elements, in this case, when the bottom ram 11 comes into contact with the bearing inner ring 10 to start generating a displacement and is detected and recorded by the displacement sensor 2, the value displayed on the torque wrench 14 is large and increases with the increase of the displacement.

Example 2: on the basis of embodiment 1, the manual measurement process is changed into an automatic measurement mode, the torque wrench 14 is replaced by a rotating device with a torque sensor, such as a motor, a pneumatic motor, a hydraulic motor and the like, so that the automation of the measurement process is realized, meanwhile, the measured data result can be automatically transmitted to a processor, the displacement-torque data is analyzed and processed, and according to the processed result, the clearance value of the positive clearance bearing can be obtained, and the clearance value of the negative clearance bearing can also be obtained by indirect calculation according to a formula and standard sample piece data.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. A positive play measuring device based on displacement-torque measurement is characterized in that: mainly comprises a displacement sensor fixing support (1), a displacement sensor (2), a press-mounting mass block (3), a bearing flange (4), a bearing outer ring (5), a bolt (6), an annular pressing block (7), a gasket (8), an adjusting sleeve (9), a bearing inner ring (10), a bottom pressing head (11), a threaded rotary ejector rod (12), a base (13) and a torque wrench (14), wherein the threaded rotary ejector rod (12) is installed in a threaded hole in the center of the base (13) in a matching way, the bottom pressing head (11) is installed at the top end of the threaded rotary ejector rod (12) in a matching way, the adjusting sleeve (9) is installed above the base (13) and is matched with a large counter bore of the base (13), the bearing flange (4) is installed in a bearing formed by the bearing inner ring (10) and the bearing outer ring (5), and the bearing flange (4), the bearing inner ring (10) and the bearing outer ring (5) are hub bearing units, the bearing outer ring (5) is arranged on the adjusting sleeve (9), the mounting surface of the bearing outer ring (5) is matched with a central round hole of the adjusting sleeve (9), the top end step of the bottom pressure head (11) is matched with an inner hole of the bearing flange (4), the gasket (8) is arranged on the adjusting sleeve (9), the annular pressing block (7) is arranged on the bearing outer ring (5) and the gasket (8), a through hole is arranged on the annular pressing block (7), the width of the through hole is matched with the diameter of the through hole on the adjusting sleeve (9), the annular pressing block (7) is screwed on the adjusting sleeve (9) through the positioning of the bolt (6) and the through hole, the pressing mass block (3) is arranged on the bearing flange (4), the displacement sensor (2) is arranged on the displacement sensor fixing support (1), the position of the displacement sensor fixing support (1) is fixed, the axis of the displacement sensor (2) is coincided with the central axis of the hub bearing unit, the measuring head at the bottom of the displacement sensor (2) is opposite to the round shallow groove at the center of the upper part of the press-mounting mass block (3) and always kept in contact for measurement, and the threaded rotating ejector rod (12) is matched with a torque wrench (14).

2. The positive backlash measuring device based on the displacement-torque measurement according to claim 1, wherein: the tail end of the threaded rotary ejector rod (12) is hemispherical and convex, and is matched with a hemispherical groove at the lower end of the bottom pressure head (11), the radius of the hemispherical groove of the bottom pressure head (11) is larger than that of the hemispherical convex of the threaded rotary ejector rod (12), and matching centering is formed between the two.

3. The positive backlash measuring device based on the displacement-torque measurement according to claim 1, wherein: the through hole on the annular pressing block (7) is in a long strip shape.

4. The positive backlash measuring device based on the displacement-torque measurement according to claim 1, wherein: and a circular groove is dug at the bottom of the bearing flange (4), and the circular groove is matched with the flange plate mounting surface of the press-mounting mass block (3).