CN114562947A - Maintenance-free hub bearing's negative play check out test set - Google Patents
Maintenance-free hub bearing's negative play check out test set Download PDFInfo
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- CN114562947A CN114562947A CN202210120106.XA CN202210120106A CN114562947A CN 114562947 A CN114562947 A CN 114562947A CN 202210120106 A CN202210120106 A CN 202210120106A CN 114562947 A CN114562947 A CN 114562947A
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- support frame
- bearing
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- loading
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a negative clearance detection device of a maintenance-free hub bearing, which comprises a detection device and a bearing to be detected, wherein the bearing to be detected is provided with two inner rings and comprises a fixing tool for mounting the bearing to be detected; the loading equipment is used for carrying out axial loading on the equipment to be tested on the fixed tool so as to extrude two inner rings of the bearing to be tested; and the distance measuring device is arranged on the fixed tool and corresponds to the position of the loading equipment and is used for detecting the stroke distance of the loading equipment. The invention can enable the negative clearance detection data to be more effective and reliable, can have the effect of monitoring the negative clearance state, and improves the reliability of the service life.
Description
Technical Field
The invention relates to bearing detection equipment, in particular to negative clearance detection equipment of a maintenance-free hub bearing.
Background
The maintenance-free hub bearing needs to be controlled to be a negative clearance due to the requirement of service life, the detection of the negative clearance mostly adopts indirect monitoring of the side amount of the moment at present, but the factors of moment influence are more, and the monitoring interference items of the multiple negative clearances are more, so that the detection effect is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the maintenance-free hub bearing negative clearance detection equipment, which can enable negative clearance detection data to be more effective and reliable, has the effect of monitoring the negative clearance state and improves the reliability of the service life.
In order to realize the purpose, the invention provides the following technical scheme: a negative internal clearance detection device of a maintenance-free hub bearing comprises a detection device and a bearing to be detected, wherein the bearing to be detected is provided with two inner rings, and the detection device comprises
The fixing tool is used for mounting a bearing to be tested;
the loading equipment is used for carrying out axial loading on the equipment to be tested on the fixed tool so as to extrude two inner rings of the bearing to be tested;
and the distance measuring device is arranged on the fixed tool and corresponds to the position of the loading equipment and is used for detecting the stroke distance of the loading equipment.
As a further improvement of the invention, the fixing tool comprises a support frame and a fixing piece which is detachably arranged on the support frame; the mounting is cyclic annular, range unit installs the position that corresponds the mounting center on the support frame.
As a further improvement of the invention, the outer surface of one end of the fixing piece, which corresponds to the supporting frame, is provided with a threaded bulge, the supporting frame is provided with a threaded groove matched with the threaded bulge, and the supporting frame is connected with the fixing frame in a threaded fit manner.
As a further improvement of the invention, the loading device comprises a hydraulic push rod and a tool arranged on the hydraulic push rod, the tool is provided with a connecting seat and a pushing and pressing piece arranged on the connecting seat, and the connecting seat is used for being detachably connected with the end part of a telescopic rod of the hydraulic push rod; the pushing and pressing piece is cylindrical and is used for assembling the bearing to be tested, a circular truncated cone is arranged at the end part of the pushing and pressing piece, the diameter of the circular truncated cone is matched with the inner diameter of the inner ring of the bearing to be tested, and the step of the circular truncated cone abuts against the end face of the inner ring so as to support the inner ring; the end part of the circular truncated cone corresponds to the distance measuring device, and the end part of the circular truncated cone is a sealed plane and is matched with the distance measuring device to detect the distance between the circular truncated cone and the distance measuring device.
As a further improvement of the invention, the distance measuring device adopts a laser distance measuring instrument or an infrared distance measuring instrument.
As a further improvement of the invention, the fixing tool further comprises an assembling base; the assembly base is provided with a slide rail, the width of the slide rail is matched with the support frame, the support frame is assembled in the slide rail in a sliding mode, the hydraulic push rod is fixedly connected to the assembly base, and the hydraulic push rod is connected with the support frame through a tension sensor.
As a further improvement of the invention, a portal frame is arranged on the assembly base corresponding to the position of the support frame, the upper beam part of the portal frame is abutted against the top of the support frame to limit the support frame from tilting upwards or separating from the slideway, and when the length of the slideway exceeds the portal frame, the exceeding part is not more than the length of the support frame.
As a further improvement of the invention, a rolling roller which is used for abutting against the support frame is arranged on the upper beam part of the portal frame, and the rotating direction of the rolling roller is matched with the moving direction of the support frame; the rolling rollers are arranged in a plurality of numbers and are all propped against the upper beam part of the supporting frame.
As a further improvement of the invention, the tension sensor and the distance measuring device are both connected to a printing device, and the printing device acquires tension change of the tension sensor and time data and prints a relation graph between time and tension change; the printing equipment also acquires a distance change and tension change relation diagram of the distance measuring device.
As a further improvement of the invention, the inner ring surface of the fixing piece is a frosted surface.
The invention has the advantages that the stroke distance of the loading equipment is detected by the distance measuring device in the loading process, the data of the negative clearance is directly converted by the displacement change, the detection conclusion can be intuitively, effectively and reliably obtained, and the detection process is quick. In the specific data change expression, the two inner ring end faces of the bearing in the initial state are in a non-fit state, the slope of an image formed by the displacement and the loading force in the stage is large, and then the inner ring reaches the fit state, the slope formed by the displacement and the loading force in the stage is small, so that a turning point is formed, namely the negative play state of the bearing.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the bearing to be tested in an assembled state according to the present invention;
FIG. 3 is a schematic diagram of the output tension-distance relationship of the printing apparatus of the present invention;
FIG. 4 is a schematic diagram of the output load pressure-distance relationship of the printing apparatus of the present invention;
FIG. 5 is a schematic diagram of the relationship between the output loading pressure and the tension and distance of the printing apparatus according to the present invention.
Reference numerals: 1. fixing the tool; 11. a support frame; 111. a thread groove; 12. a fixing member; 121. a threaded boss; 13. assembling a base; 131. a slideway; 2. loading equipment; 21. a hydraulic push rod; 22. assembling; 221. a connecting seat; 222. a biasing member; 223. a circular truncated cone; 224. a step; 3. a distance measuring device; 4. a tension sensor; 5. a gantry; 51. a rolling roller; 6. a printing apparatus.
Detailed Description
The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
As shown with reference to figures 1-5,
a negative internal clearance detection device of a maintenance-free hub bearing comprises a detection device and a bearing to be detected, wherein the bearing to be detected is provided with two inner rings, and the detection device comprises
The fixing tool 1 is used for installing a bearing to be tested;
the loading device 2 is used for carrying out axial loading on the device to be tested on the fixed tool 1 so as to extrude two inner rings of the bearing to be tested;
and the distance measuring device 3 is arranged on the fixed tool 1 and corresponds to the position of the loading equipment 2 and is used for detecting the stroke distance of the loading equipment 2.
In this scheme, check out test set is examining time measuring bearing, at first install the bearing that awaits measuring on fixed frock 1, then carry out axial loading through loading equipment 2 to the bearing that awaits measuring, let two inner rings of the bearing that awaits measuring be close to each other and know mutually and laminate, detect loading equipment 2's stroke distance through range unit 3 at the loaded in-process simultaneously, change the data that directly turns into the negative play through the displacement, can be directly perceived and effective, reliable acquisition detection conclusion, and the testing process is quick. In the specific data change expression, the two inner ring end faces of the bearing in the initial state are in a non-fit state, the slope of an image formed by the displacement and the loading force in the stage is large, and then the inner ring reaches the fit state, the slope formed by the displacement and the loading force in the stage is small, so that a turning point is formed, namely the negative play state of the bearing.
The fixing tool 1 comprises a support frame 11 and a fixing piece 12 which is detachably arranged on the support frame 11; the fixing member 12 is in a ring shape, and the distance measuring device 3 is mounted on the support frame 11 at a position corresponding to the center of the fixing member 12.
The supporting frame 11 provides a supporting force, so that a clamping effect on the bearing to be tested can be formed between the loading equipment 2 and the supporting force, and the bearing to be tested can be stressed and extruded; install the bearing that awaits measuring through mounting 12, can provide the installation position to mounting 12 is cyclic annular, means the centre for hollow design, and range unit 3 is located this hollow position department, because the detection of negative play is realized through extrudeing the inner circle, therefore the tip of loading equipment 2 cooperates the loading with the inner circle, and at this moment, range unit 3 can directly surely be accurate cooperate the detection distance change with the tip of loading equipment 2.
In the further setting, set up screw thread protrusion 121 at the surface of mounting 12, can cooperate with support frame 11, let screw thread protrusion 121 and the thread groove 111 on the support frame 11 carry out the screw assembly, be convenient for change to the bearing that awaits measuring of different sizes, can ensure the detection precision of the bearing that awaits measuring.
In a specific scheme of the loading device 2, the loading force is implemented through the hydraulic push rod 21, in fact, an electric push rod can be adopted, and the hydraulic push rod 21 can provide a certain buffering effect. In addition, the tooling 22 is designed, the tooling 22 is composed of a connecting seat 221 and a pushing part 222, the pushing part 222 is installed on the hydraulic push rod 21 by using the connecting seat 221, the connecting seat 221 can be conveniently and directly replaced with the pushing part 222, of course, the connecting seat 221 can be installed on the hydraulic push rod 21 for a long time, and the size of the bearing to be tested is replaced and adapted in a mode that the pushing part 222 and the connecting seat 221 are detached and replaced. The pushing piece 222 arranged in a cylindrical shape facilitates assembly of the bearing to be tested, the circular truncated cone 223 is arranged at the end of the pushing piece to form a step 224, the size of the circular truncated cone 223 is matched with that of the inner ring of the bearing to be tested, assembly can be achieved, the inner ring is supported through the step 224 of the circular truncated cone 223, and force can be applied to the end of the inner ring through the step 224 in the loading process. Simultaneously the tip of round platform 223 sets up to the plane of sealing, can with range unit 3 more adaptations, range unit 3 can cooperate this plane to range a distance, obtains the displacement data of round platform 223, and then the detection numerical value of reaction negative play.
In addition, general loading equipment 2 has the detection part that detects present applied pressure, so can directly let support frame 11 and loading equipment 2 fix in a place under the common circumstances can, only need between the two carry out pressurization loading through the push rod of loading equipment 2 can, relative fixed between the two can let the loading effect more stable. As another alternative embodiment, the supporting frame 11 may also be slidable, a mounting base 13 is configured, a slide 131 capable of allowing the supporting frame 11 to slide is disposed on the mounting base 13, the supporting frame 11 is mounted in the slide 131, and the hydraulic push rod 21 is fixed on the mounting base 13, at this time, the two have a function of generating relative displacement, and then the two are connected through the tension sensor 4, and the tension sensor 4 may adopt an S-shaped tension sensor 4, which has a characteristic of high strength. When hydraulic pressure push rod 21 carries out the loading to the bearing that awaits measuring, can let produce the motion trend of keeping away from relatively between support frame 11 and the hydraulic pressure push rod 21, loading force can feed back through force transducer 4 simultaneously, and then obtains an solitary pulling force data, can cooperate hydraulic pressure push rod 21 from the pressure measurement part in area to carry out the secondary and confirm, ensures the vertical accuracy of detection. And the tension sensor 4 can limit the movement of the support frame 11, and the cooperation of the slideway 131 and the support frame 11 only serves as a structure for generating a movement trend. Based on the above usage scheme, the length of the slideway 131 does not need to be too long actually, and only a small amount of displacement space of the support frame 11 needs to be provided to match the deformation of the tension sensor 4.
In order to make the assembly of support frame 11 more stable, portal frame 5 is still added to this scheme, cover support frame 11 through portal frame 5, can avoid loading equipment 2 attitude change to appear at loaded in-process support frame 11, for example, the uneven problem that produces the perk of atress, portal frame 5 has two kinds of condition with the cooperation of slide 131, one kind is that the length of portal frame 5 has covered slide 131, another kind is that a part of slide 131 surpasss the coverage of portal frame 5, when needing the restraint this moment, the part that surpasss can not be greater than the length of support frame 11, can retrain support frame 11 through portal frame 5 this moment, possess better assembly effect.
When loading equipment 2 carries out the loading to the bearing that awaits measuring, the power that is used for support frame 11 is also very big, if support frame 11 directly contacts with portal frame 5, can produce great wearing and tearing, sets up roll roller 51 at the upper beam play of portal frame 5, can reduce wear, possesses the restraint effect simultaneously.
According to the scheme, a printing device 6 can be additionally configured, the printing device 6 is matched with the tension sensor 4 and the distance measuring device 3 to obtain the tension value and the time value of the tension sensor 4, a tension change graph is drawn according to the time value and the tension value, the coordinate of the tension change graph is the time and the tension value, the change indication of the tension can be obtained through the feedback, and the change graph printed by the printing device 6 can be visually indicated and recorded; the distance measuring device 3 is matched with the tension sensor 4, the printing equipment 6 obtains tension change and distance change, the tension change and the distance change are matched, a change relation graph of the position tension and the distance can be obtained, and a change state graph of the negative clearance is fed back. In fact, since the hydraulic push rod 21 may be provided with a pressure detecting component, the pressure detecting component can be provided with a pressure detecting component for detecting the loading pressure, and the tension may also be the loading pressure detected by the pressure detecting component. Certainly, the combination of the loading pressure and the pulling force can be realized, the mean value of the loading pressure and the pulling force is drawn, the drawings related to the pulling force and the loading pressure can be printed on the same coordinate axis, and then the drawings are visually compared, whether the current detection part is abnormal or not can be fed back more accurately, when the difference between the drawings is large, an operator can be reminded to maintain and check the equipment, and the detection result is prevented from being large in deviation.
In the setting of optimization, can be with the inner wall design of mounting 12 for the frosting, reduce the influence when range finding is carried out to range unit 3, let the range finding effect more stable.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a non-maintaining wheel hub bearing's negative play check out test set, includes check out test set and the bearing that awaits measuring, and the bearing that awaits measuring possesses two inner circles, a serial communication port, include
The fixing tool is used for installing a bearing to be tested;
the loading equipment is used for carrying out axial loading on the equipment to be tested on the fixed tool so as to extrude two inner rings of the bearing to be tested;
and the distance measuring device is arranged on the fixed tool and corresponds to the position of the loading equipment and is used for detecting the stroke distance of the loading equipment.
2. The negative windage detection apparatus according to claim 1, wherein the fixing tool includes a support frame and a fixing member detachably mounted on the support frame; the mounting is cyclic annular, range unit installs the position that corresponds the mounting center on the support frame.
3. The negative clearance detection apparatus according to claim 2, wherein a threaded protrusion is provided on the fixing member on an outer surface of one end corresponding to the support frame, a threaded groove adapted to the threaded protrusion is provided on the support frame, and the support frame is connected to the fixing frame by a threaded fit.
4. The negative windage detection device according to claim 2, wherein the loading device includes a hydraulic push rod, a tool provided on the hydraulic push rod, the tool having a connecting seat and a pushing member mounted on the connecting seat, the connecting seat being adapted to be detachably connected to an end of a telescopic rod of the hydraulic push rod; the pushing and pressing piece is cylindrical and is used for assembling the bearing to be tested, a circular truncated cone is arranged at the end part of the pushing and pressing piece, the diameter of the circular truncated cone is matched with the inner diameter of the inner ring of the bearing to be tested, and the step of the circular truncated cone abuts against the end face of the inner ring so as to support the inner ring; the tip of this round platform is corresponding with range unit, and the tip of round platform is the plane of sealing, detects the distance between the two with range unit cooperation.
5. The negative windage detection apparatus according to claim 4, wherein the distance measuring device employs a laser distance meter or an infrared distance meter.
6. The negative backlash detection apparatus according to claim 4, wherein the fixing tool further comprises an assembly base; the assembly base is provided with a slide rail, the width of the slide rail is matched with the support frame, the support frame is assembled in the slide rail in a sliding mode, the hydraulic push rod is fixedly connected to the assembly base, and the hydraulic push rod is connected with the support frame through a tension sensor.
7. The negative windage detection apparatus according to claim 6, wherein a gantry is provided on the assembly base at a position corresponding to the support frame, an upper beam portion of the gantry abuts against a top portion of the support frame to limit the support frame from tilting upward or separating from the chute, and when the length of the chute exceeds the gantry, the exceeding portion is not greater than the length of the support frame.
8. The negative windage detection device according to claim 7, wherein a rolling roller for abutting against the support frame is provided on an upper beam portion of the gantry, and a rotation direction of the rolling roller is adapted to a moving direction of the support frame; the rolling rollers are arranged in a plurality of numbers and are all propped against the upper beam part of the supporting frame.
9. The negative windage detection device of claim 6, wherein the tension sensor and the distance measuring device are both connected to a printing device, and the printing device obtains tension variation of the tension sensor and time data to print a time-to-tension variation graph; the printing equipment also acquires a distance change and tension change relation diagram of the distance measuring device.
10. The negative windage detection apparatus according to claim 5, wherein the inner ring surface of the fixing member is a frosted surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210120106.XA CN114562947B (en) | 2022-01-26 | 2022-01-26 | Maintenance-free hub bearing negative clearance detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210120106.XA CN114562947B (en) | 2022-01-26 | 2022-01-26 | Maintenance-free hub bearing negative clearance detection equipment |
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| CN114562947A true CN114562947A (en) | 2022-05-31 |
| CN114562947B CN114562947B (en) | 2023-10-20 |
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| CN114562947B (en) | 2023-10-20 |
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