阅读说明：本技术 车轮轮毂轴承单元轴向游隙检测装置及方法 (Device and method for detecting axial clearance of wheel hub bearing unit ) 是由 冯克阳 杨艳伟 崔志刚 张国庆 戴国水 于 2021-07-30 设计创作，主要内容包括：本发明涉及检具的领域,具体涉及一种车轮轮毂轴承单元轴向游隙检测装置及方法,检测装置包括支撑底板以及检测芯轴,所述检测芯轴用于固定车轮轮毂轴承内圈,支撑底板上设有游隙测量百分表,游隙测量百分表的测量触头抵住车轮轮毂轴承外壳,支撑底板两侧设有手动旋转装置,手动旋转装置用于带动支撑底板翻转,翻转后,车轮轮毂轴承外壳在自身重力作用下向下位移量在游隙测量百分表上直接读取,测得游隙。相较于现有技术,本发明采用人工手动方式实现机构的180°翻转,避免检测过程中产生过大的振动；检测装置可根据具体使用进行移动,可灵活实现小批量车轮轮毂轴承单元游隙的检测。(The invention relates to the field of checking tools, in particular to a device and a method for detecting axial clearance of a wheel hub bearing unit. Compared with the prior art, the mechanism is turned over for 180 degrees in a manual mode, and excessive vibration is avoided in the detection process; the detection device can move according to specific use, and can flexibly realize the detection of the small-batch wheel hub bearing unit clearance.)

1. The utility model provides a wheel hub bearing unit axial internal clearance detection device which characterized in that: the wheel hub bearing inner ring detection device comprises a supporting base plate (1) and a detection mandrel (2), wherein the detection mandrel (2) is used for fixing a wheel hub bearing inner ring (5), manual rotating devices (4) are arranged on two sides of the supporting base plate (1), the manual rotating devices (4) are used for driving the supporting base plate (1) to overturn, and a play measurement dial indicator (3) is arranged on the supporting base plate (1); the measuring contact of the clearance measuring dial indicator (3) is propped against the wheel hub bearing shell (6), and the clearance measuring dial indicator (3) is used for reading the downward displacement of the turned wheel hub bearing shell (6) under the action of self gravity.

2. The wheel hub bearing unit axial play detection device according to claim 1, characterized in that: the manual rotating device (4) comprises a connecting plate (4-1), a flange plate (4-2), an end cover plate (4-3), a fixing seat (4-4), a limiting pin (4-5) and a safety pin (4-6), wherein the supporting base plate (1) is fixedly connected with the connecting plate (4-1), the flange plate (4-2) and the end cover plate (4-3) are sequentially connected, the flange plate (4-2) penetrates through the fixing seat (4-4), a sealing deep groove ball bearing (4-7) is arranged between the flange plate (4-2) and the fixing seat (4-4), the end cover plate (4-3) is provided with a 180-degree arc groove, and the limiting pin (4-5) is connected with the fixing seat (4-4) and penetrates through the arc groove, the control of the front and rear limit positions of the turnover is realized through the limiting pin (4-5), the safety pin (4-6) is inserted into the fixing seat (4-4) and the end cover plate (4-3), and the safety pin (4-6) is used for positioning when the turnover reaches the limit positions.

3. The wheel hub bearing unit axial play detecting device according to claim 2, characterized in that: the method is characterized in that: the end cover plate (4-3) is connected with a handle (4-8).

4. The wheel hub bearing unit axial play detecting device according to claim 1, characterized in that: and the detection mandrel (2) is provided with a large nut (2-1) for locking and fixing the wheel hub bearing inner ring (5).

5. A wheel hub bearing unit axial clearance detection method is characterized in that: the method comprises the following steps:

(1) fixing a detection mandrel (2) on a support base plate (1), sleeving a wheel hub bearing on the detection mandrel (2), and screwing a large nut (2-1) by selecting a torque wrench to fit large and small torques;

(2) the measuring contact of the clearance measuring dial indicator (3) is abutted against the lower end face of a wheel hub bearing shell (6) and is fixed in position, a safety pin (4-6) is inserted to fix a supporting base plate (1), then the wheel hub bearing shell (6) rotates for three circles around one direction, the wheel hub bearing shell (6) is pressed down in the rotating process, the wheel hub bearing shell (6), a roller and a wheel hub bearing inner ring (5) are in full contact and are uniformly and stably stressed, then a mark point is searched, and the pointer of the clearance measuring dial indicator (3) is adjusted to a zero position at the moment;

(3) the safety pin (4-6) is pulled out, the handle (4-8) is rotated, the supporting base plate (1) is driven to integrally turn over for 180 degrees, then the safety pin (4-6) is inserted to fix the supporting base plate (1), and at the moment, the downward displacement of the wheel hub bearing shell (6) under the action of self gravity is directly read on the clearance measurement dial indicator (3);

(4) and the value read by the clearance measurement dial indicator (3) in the detection process is the axial clearance of the wheel hub bearing unit.

Technical Field

The invention relates to the field of detection tools, in particular to a device and a method for detecting axial clearance of a wheel hub bearing unit.

Background

The prior art discloses convertible commercial car wheel hub bearing play detects machine CN201520948031.X, including measuring with amesdial, inside bearing outer cover, measurement dabber frame, outer end bearing outer cover, locking with big nut, outer end bearing endotheca, the hub casing, the inside bearing endotheca and the hub unit support rotation axis of usefulness that await measuring, measure dabber frame and fix the center department at hub unit support rotation axis, install the location shoulder position at the detection dabber frame in the inside bearing, inside bearing outer cover and outer end bearing outer cover are installed inside the hub casing, the hub casing is installed on inside bearing inner cover, the cover is equipped with the spacer sleeve and is located between inside bearing outer cover and the outer end bearing outer cover on the measurement dabber frame, the locking is with big nut threaded connection on the upper portion of measuring the dabber frame.

The detection steps are as follows:

1. fixing a detection mandrel frame on a hub unit supporting rotating shaft;

2. then the inner bearing inner sleeve base surface is arranged at the position of a positioning shaft shoulder of the detection mandrel frame downwards;

3. the hub shell with the installed inner and outer bearing outer sleeves and the installed hub shell are placed on the inner end bearing inner sleeve, then the special spacer bush is sleeved on the detection mandrel, and the end surface of the large opening of the special spacer bush is close to the non-base surface of the inner end bearing inner sleeve;

4. placing the base surface of the outer end bearing inner sleeve upwards in the hub shell, installing the base surface of the outer end bearing inner sleeve to be close to the small base surface of the spacer sleeve, and screwing the large nut;

5. abutting a measuring contact of the clearance measuring dial indicator against the lower end face of the hub shell, and aligning a measuring pointer to a zero position of the dial indicator;

6. the hub shell supports the rotating shaft to turn over 180 degrees under the drive of the stepless speed regulating gearbox, at the moment, the hub shell moves downwards under the action of self gravity, and the displacement value can be directly read on a clearance measurement dial indicator;

7. the height of the spacer bush can be accurately determined and processed according to the common axial play of the two bearings, so that the hub bearing is ensured to obtain reasonable long-life working play.

According to the scheme, the implementation mode of overturning 180 degrees is simple in description and difficult to implement, and vibration is generated in the driving process of the stepless speed regulating gearbox, so that the accuracy of a measuring result is influenced.

And because commercial car wheel hub unit self is heavier, this detection machine and gearbox linkage, inconvenient removal are difficult to realize the nimble detection of play.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a device and a method for detecting the axial clearance of a wheel hub bearing unit.

The purpose of the invention is achieved by the following technical scheme: this kind of wheel hub bearing unit axial internal clearance detection device, including supporting baseplate and detection dabber, it is used for fixed wheel hub bearing inner race to detect the dabber, is equipped with the internal clearance on the supporting baseplate and measures the percentage table, and the measuring contact that the percentage table was measured to the internal clearance supports wheel hub bearing shell, and the supporting baseplate both sides are equipped with manual rotary device, and manual rotary device is used for driving the supporting baseplate upset, and after the upset, wheel hub bearing shell is direct reading on the internal clearance measures the percentage table to the displacement volume downwards under self action of gravity, records the internal clearance.

Further, manual rotary device includes connecting plate, ring flange, end cover board, fixing base, spacer pin, safety pin, supporting baseplate and connecting plate fixed connection, connecting plate, ring flange, end cover board connect gradually, and the ring flange passes the fixing base, be equipped with sealed deep groove ball bearing between ring flange and the fixing base, set up 180 degrees arc channels on the end cover board, the spacer pin is connected with the fixing base and alternates on the arc channel, realizes the control of two extreme positions around the upset through the spacer pin, and the safety pin alternates on fixing base and end cover board, and the safety pin is used for the upset to reach the location when extreme position.

The invention also discloses a method for detecting the axial clearance of the wheel hub bearing unit, which comprises the following steps:

(1) fixing a detection mandrel on a support base plate, sleeving a wheel hub bearing on the detection mandrel, and selecting a large nut which is suitable for large and small torques to screw by using a torque wrench;

(2) the measuring contact of the clearance measuring dial indicator is abutted against the lower end face of the wheel hub bearing shell and is fixed in position, the supporting bottom plate is fixed by inserting the safety pin, then the wheel hub bearing shell rotates for three circles around one direction, the wheel hub bearing shell is pressed downwards in the rotating process, the wheel hub bearing shell, the roller and the wheel hub bearing inner ring are in full contact and are uniformly and stably stressed, then a mark point is searched, and the pointer of the clearance measuring dial indicator is adjusted to a zero position;

(3) the safety pin is pulled out, the handle is rotated, the supporting base plate is driven to integrally turn over for 180 degrees, then the safety pin is inserted to fix the supporting base plate, and at the moment, the downward displacement of the wheel hub bearing shell under the action of self gravity is directly read on the clearance measurement dial indicator;

(4) and the value read by the clearance measurement dial indicator in the detection process is the axial clearance of the wheel hub bearing unit.

The invention has the beneficial effects that: the mechanism is turned over for 180 degrees manually, so that overlarge vibration is avoided in the detection process; the detection device can move according to specific use, and can flexibly realize the detection of the small-batch wheel hub bearing unit clearance.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the inverted structure of the present invention;

description of reference numerals: the device comprises a supporting base plate 1, a detection mandrel 2, a large nut 2-1, a clearance measurement dial indicator 3, a manual rotating device 4, a connecting plate 4-1, a flange plate 4-2, an end cover plate 4-3, a fixing seat 4-4, a limiting pin 4-5, a safety pin 4-6, a sealing deep groove ball bearing 4-7, a handle 4-8, a wheel hub bearing inner ring 5, a wheel hub bearing outer shell 6 and a spacer bush 7.

Detailed Description

The invention will be described in detail below with reference to the following drawings:

example (b): as shown in fig. 1-2, the axial clearance detection device for the wheel hub bearing unit comprises a support base plate 1 and a detection mandrel 2, wherein the detection mandrel 2 is used for fixing an inner ring 5 of the wheel hub bearing, the support base plate 1 is provided with a clearance measurement dial indicator 3, a measurement contact of the clearance measurement dial indicator 3 is abutted against a wheel hub bearing shell 6, two sides of the support base plate 1 are provided with manual rotating devices 4, the manual rotating devices 4 are used for driving the support base plate 1 to turn over, after the turning over, the downward displacement of the wheel hub bearing shell 6 under the action of self gravity is directly read on the clearance measurement dial indicator 3, and the clearance is measured. The manual rotating device 4 comprises a connecting plate 4-1, a flange plate 4-2, an end cover plate 4-3, a fixed seat 4-4, a limiting pin 4-5 and a safety pin 4-6, wherein the supporting base plate 1 is fixedly connected with the connecting plate 4-1, the flange plate 4-2 and the end cover plate 4-3 are sequentially connected, the flange plate 4-2 penetrates through the fixed seat 4-4, a sealing deep groove ball bearing 4-7 is arranged between the flange plate 4-2 and the fixed seat 4-4, an arc groove of 180 degrees is formed in the end cover plate 4-3, the limiting pin 4-5 is connected with the fixed seat 4-4 and is inserted in the arc groove, the control of two limit positions before and after overturning is realized through the limiting pin 4-5, and the safety pin 4-6 is inserted in the fixed seat 4-4 and the end cover plate 4-3, the safety pin 4-6 is used for positioning when the roll-over reaches the extreme position.

The end cover plate 4-3 is connected with a handle 4-8 to facilitate turning. The detection mandrel 2 is connected with a large nut 2-1 for locking and fixing a wheel hub bearing inner ring 5, so that on one hand, the hub unit is prevented from falling after being turned over for 180 degrees, and on the other hand, the size of a clearance under a specific torque can be measured.

The working process of the invention is as follows:

fixing a detection mandrel 2 on a support base plate 1, sleeving a wheel hub bearing on the detection mandrel 2, and selecting a large nut 2-1 with a suitable large torque and a suitable small torque by using a torque wrench;

the measuring contact of the clearance measuring dial indicator 3 is abutted against the lower end face of the wheel hub bearing shell 6 and is fixed in position, the supporting bottom plate 1 is fixed by inserting the safety pins 4-6, then the wheel hub bearing shell 6 is rotated for three circles around one direction, the wheel hub bearing shell 6 is pressed down in the rotating process, the wheel hub bearing shell 6, the roller and the wheel hub bearing inner ring 5 are in full contact and are uniformly and stably stressed, then a mark point is searched, and the pointer of the clearance measuring dial indicator 3 is adjusted to a zero position;

then, the safety pin 4-6 is pulled out, the handle 4-8 is rotated, the supporting base plate 1 is driven to integrally turn over for 180 degrees, then the safety pin 4-6 is inserted to fix the supporting base plate 1, and at the moment, the downward displacement of the wheel hub bearing shell 6 under the action of self gravity can be directly read on the clearance measurement dial indicator 3;

the value read by the clearance measurement dial indicator 3 in the detection process is the axial clearance of the wheel hub bearing unit, and the height of the spacer 7 of the two wheel hub bearings can be accurately ground according to the clearance so as to ensure that the wheel hub unit has reasonable working clearance.

It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.