CN203629736U - Wheel hub spline shaft bolt pretightening force detection device - Google Patents
Wheel hub spline shaft bolt pretightening force detection device Download PDFInfo
- Publication number
- CN203629736U CN203629736U CN201320645621.6U CN201320645621U CN203629736U CN 203629736 U CN203629736 U CN 203629736U CN 201320645621 U CN201320645621 U CN 201320645621U CN 203629736 U CN203629736 U CN 203629736U
- Authority
- CN
- China
- Prior art keywords
- bolt
- sleeve
- thread bush
- detection device
- wheel hub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a wheel hub spline shaft bolt pretightening force detection device. The wheel hub spline shaft bolt pretightening force detection device comprises a base seat, a connection block and a connection sleeve, wherein the connection block is fixedly connected with the base seat, a top face center of the connection block is provided with a square hole, a lower end of the connection sleeve is inserted into the square hole and is connected with the connection block, an upper end of the connection sleeve extends upwards to form a thread sleeve, the thread sleeve is internally provided with a thread hole, the thread hole is internally provided with a spline shaft bolt, an outer side of the thread sleeve is sleeved with a flange sleeve, a lower end of the flange sleeve extends downwards to form a supporting sleeve, the supporting sleeve is sleeved at the outer side of the thread sleeve and is connected with a thread sleeve spline, circumference of an outer side of the supporting sleeve is provided with multiple strain gages, the strain gages are connected with a strain adapter, the strain adapter is connected with an industrial control computer, an upper end of the spline shaft bolt is provided with a sleeve, and the sleeve is connected with a torque wrench. The wheel hub spline shaft bolt pretightening force detection device is advantaged in that the wheel hub spline shaft bolt pretightening force detection device can rapidly and accurately detect a pretightening force of the bolt while a structure of the bolt is not damaged.
Description
Technical field
The utility model relates to detection device for bolt pretightening force, relates in particular to a kind of wheel hub splined shaft detection device for bolt pretightening force.
Background technology
At present, in order to study the long-pending relation with its pretightning force of wheel bolt friction factor, nut abutment surface, need play or pretightning force under hub bearing entrucking state to provide support, in third generation bearing-hub assembly, be connected with splined shaft bolt-locking by splined shaft, therefore need to detect the moment of torsion of splined shaft bolt and the linear relationship of pretightning force.In prior art, the pretightning force of bolt detects the general following two schemes that adopts: the first scheme, in bolt end central punch, sensitive element is imbedded to bolt inside, by the deformation of sensitive element perception bolt, electric signal to sensitive element output carries out analyzing and processing, gets pretightning force, detects; First scheme does not have on threaded double-screw bolt and processes measurement plane on bolt, and strain gauge adhesion, in this measurement plane, is drawn to signal wire by bolt bore, utilizes the strain of foil gauge to survey bolt pretightening.For the first scheme, some bolt self hardness is very high, is not easy to punching, and some bolt model is very little, punch very difficult, and all extremely difficult controls such as the smooth degree in right alignment, the hole of while hole and nut, thus cause accuracy of detection low, detection difficult; For first scheme, bolt is too little, is also difficult to process plane, and foil gauge lacks installation site, and the double-screw bolt entirety of some bolt is all threaded, and can affect the normal use of bolt after processing plane.To sum up, present screw axial pre tightening force detects all bolt self with destructiveness, and testing environment, state consistency be difficult to control, thereby causes accuracy of detection low, cannot detect even completely.
Chinese patent Granted publication number: CN202867494U, April 10 2013 Granted publication day, a kind of bolt that is provided with pretightning force detection rotary head is disclosed, comprise bolt, detect rotary head, fixed bar, spring, fixed pin and cementing agent, the axle center of bolt is provided with stepped hole, fixed pin holes and regulates pin-and-hole, detect rotary head and be provided with swing arm and adjustment pin, fixed bar is provided with boss and nut; Fixed bar is located in stepped hole, and cementing agent is connected fixed bar termination and stepped hole, detects rotary head and is sleeved on the boss of fixed bar, and fixed pin is embedded in fixed pin holes, and spring is located between adjustment pin and fixed pin.Detect the position of rotary head by naked-eye observation, can find early that the pretightning force of bolt reduces or lost efficacy, there is advantage simple in structure, easy to detect.Its weak point is need to process stepped hole in the axle center of bolt in this kind of detection mode, on a collection of bolt, each all processing step holes of bolt, the right alignment of each stepped hole, the degree of depth, diameter, roughness etc. can be variant, therefore pretightning force accuracy of detection is low, and consistance is poor.Bolt central punch also can reduce bolt self intensity simultaneously, destroys bolt self structure.
Utility model content
The utility model can destroy bolt self structure in order to overcome in bolt pretightening testing process of the prior art, the low deficiency of accuracy of detection simultaneously, provide a kind of in the situation that not destroying bolt self structure, can accurately detect the wheel hub splined shaft detection device for bolt pretightening force of bolt pretightening, easy to detect, check while can be used for the factory inspection of splined shaft bolt and maintenance, thereby the quality of assurance splined shaft bolt.
To achieve these goals, the utility model adopts following technical scheme:
A kind of wheel hub splined shaft detection device for bolt pretightening force, comprise pedestal, contiguous block and adapter sleeve, described contiguous block is fixedly connected with pedestal, the end face center of contiguous block is provided with square hole, the lower end of described adapter sleeve is stretched in square hole and is connected with contiguous block, the center, upper end of adapter sleeve upwards extends to form thread bush, in thread bush, be provided with threaded hole, in threaded hole, be provided with splined shaft bolt, the outside of described thread bush is arranged with flange cover, the lower end of described flange cover extends to form support set downwards, described support set be set in the outside of thread bush and with thread bush spline joint, the outer periphery of support set is provided with some foil gauges, described foil gauge is connected with strain adapter, described strain adapter is connected with industrial computer, the upper end of splined shaft bolt is provided with sleeve, described sleeve is connected with dial torque wrench.Jacket casing is at splined shaft bolt end, dial torque wrench is connected with sleeve, after dial torque wrench rotates, support set is constantly tightened and pushed to splined shaft bolt, make the foil gauge on support set produce deformation, the pretightning force of splined shaft bolt and the anchorage force of support set are a pair of acting force and reacting force, the equal and opposite in direction of power, specific moment of torsion of the every rotation of dial torque wrench all can be recorded, observe magnitude of voltage corresponding on industrial computer simultaneously, foil gauge was demarcated by foil gauge caliberating device, therefore each voltage can a corresponding pretightning force, thereby draw the relation of moment of torsion and pretightning force, realize the detection of pretightning force, in this kind of pretightning force testing process, do not need to destroy bolt self structure, can not affect bolt strength, whole structure of the detecting device is simple, detect very convenient, testing result is accurate.
As preferably, described foil gauge adopts full-bridge mode to connect.Full-bridge mode connects, and accuracy of detection is high.
As preferably, between described contiguous block and pedestal, bolt is connected, and described pedestal is provided with groove, and the bottom of described contiguous block is provided with the boss corresponding with groove.Boss coordinates with groove, prevents that dial torque wrench from relatively rotating between contiguous block and pedestal and affecting accuracy of detection in rotating.
As preferably, in adapter sleeve, be provided with cavity, described cavity and threaded hole connect.The double-screw bolt part of some bolt is longer, can stretch out thread bush, and the part of now stretching out just can stretch in cavity, prevents from causing tightening completely and affecting detection because bolt is long.
As preferably, outside, support set lower end is provided with annular breach, in described annular breach, is provided with gland, the lower end of the described gland formation flange that stretches out, the upper end in contact support of described flange and adapter sleeve.Flange on gland contacts with the upper surface of adapter sleeve, between the lower end surface of support set and the upper end of adapter sleeve, form a gap, prevent crimp between the lower end of support set and adapter sleeve and affect the precision of foil gauge, flange has effectively increased contact area simultaneously, has reduced pressure, the serviceable life of extension fixture, after long-time use, when gland produces wearing and tearing, distortion etc., can change in time, the maintenance cost of package unit is lower.
As preferably, between the lower surface of described support set and inner hole wall, be provided with chamfering.When support set is inserted on thread bush, chamfering plays guide effect, easier for installation.
A kind of foil gauge caliberating device, comprise pedestal, contiguous block and adapter sleeve, described contiguous block is connected with foundation bolt, the lower end of adapter sleeve is connected with contiguous block, the center, upper end of adapter sleeve upwards extends to form thread bush, the outside of described thread bush is arranged with flange cover, the lower end of described flange cover extends to form support set downwards, described support set be set in the outside of thread bush and with thread bush spline joint, foil gauge is attached to the outer periphery of support set, described foil gauge is connected with strain adapter, described strain adapter is connected with industrial computer, the upper end of described flange cover is provided with briquetting, the lower end of described briquetting extends to form backstay downwards, the lower end of described backstay is stretched in thread bush and is formed clearance fit with thread bush, the center, upper surface of described briquetting is provided with conical bore, in described conical bore, be provided with steel ball.The upper end of steel ball loads with adding carrier aircraft, support set generation deformation, foil gauge is experienced this strain, thereby output signal produces voltage signal after the processing of overstrain adapter and industrial computer, add after specific pressure of the every loading of carrier aircraft, recording voltage value, finally draw the linear relationship of load and voltage, therefore in wheel hub splined shaft detection device for bolt pretightening force, in the time that torque spanner rotates, the magnitude of voltage showing on industrial computer directly can be converted into corresponding pretightning force value, thereby draws intuitively the relation of moment of torsion and pretightning force.
As preferably, the axis conllinear of the axis of described conical bore and backstay.In the time adding load in carrier aircraft and be added on steel ball, the pressure-acting that steel ball produces briquetting on the axis of support set, prevents support set unbalance stress generation torsional deflection around in the process loading and affects the deformation of foil gauge, finally reduces stated accuracy.
As preferably, the lower end of described backstay is truncated cone-shaped structure.This kind of structure is convenient to location in backstay insertion threaded hole.
Therefore, the utlity model has in the situation that not destroying bolt self structure, detect fast and accurately the beneficial effect of bolt pretightening.
Accompanying drawing explanation
Fig. 1 is wheel hub splined shaft detection device for bolt pretightening force structural representation.
Fig. 2 is foil gauge caliberating device structural representation.
Fig. 3 is foil gauge signal processing structure schematic diagram in the utility model.
In figure: pedestal 1 contiguous block 2 adapter sleeve 3 thread bush 4 splined shaft bolt 5 flanges overlap 6 support set 7 foil gauge 8 strain adapter 9 industrial computer 10 sleeve 11 dial torque wrench 12 groove 13 boss 14 cavity 15 gland 16 flange 17 briquetting 18 backstay 19 conical bore 20 steel ball 21 pressure arms 22.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
A kind of wheel hub splined shaft detection device for bolt pretightening force as shown in Figure 1, comprise pedestal 1, contiguous block 2 and adapter sleeve 3, contiguous block is fixedly connected with foundation bolt, pedestal is provided with groove 13, the bottom of contiguous block 2 is provided with the boss corresponding with groove 14, the end face center of contiguous block 2 is provided with square hole, the lower end of adapter sleeve 3 is stretched in square hole and is connected with contiguous block, between adapter sleeve 3 and Connection Block 2, cannot relatively rotate, the center, upper end of adapter sleeve 3 upwards extends to form thread bush 4, in thread bush, be provided with threaded hole, in adapter sleeve 3, be provided with cavity 15, cavity and threaded hole connect, in threaded hole, be provided with splined shaft bolt 5, the outside of thread bush 4 is arranged with flange cover 6, the lower end of flange cover 6 extends to form support set 7 downwards, support set 7 be set in the outside of thread bush and with thread bush spline joint, the outer periphery of support set 7 is provided with four foil gauges 8, foil gauge 8 adopts full-bridge mode to connect into foil gauge group, as shown in Figure 3, foil gauge 8 is connected with strain adapter 9, strain adapter 9 is connected with industrial computer 10, the upper end of splined shaft bolt 5 is provided with sleeve 11, sleeve 11 is connected with dial torque wrench 12, first foil gauge is demarcated, thereby obtain the linear relationship of pressure and voltage, then use dial torque wrench to apply moment of torsion to splined shaft bolt, dial torque wrench in the utility model is Digital Electronic Torque Wrench, energy Real Time Observation torque value, when dial torque wrench does not rotate a specific moment of torsion, on industrial computer, all can produce a voltage corresponding with it, and voltage is direct and pressure correspondence, therefore just can draw intuitively the moment of torsion of one group of splined shaft bolt and the numerical value of pretightning force, thereby draw the linear relationship of moment of torsion and pretightning force, realize the detection of splined shaft bolt pretightening, so just can carry out quality testing to the splined shaft bolt dispatching from the factory, can also in the time of car inspection and repair, detect splined shaft bolt and whole bearing-hub assembly, maintenance, support set 7 outsides, lower end are provided with annular breach, between the lower surface of support set and inner hole wall, be provided with chamfering, in annular breach, be provided with gland 16, the lower end of gland 16 stretches out and forms flange 17, the upper end in contact of flange and adapter sleeve supports, flange on gland contacts with the upper surface of adapter sleeve, between the lower end surface of support set and the upper end of adapter sleeve, form a gap, prevent crimp between the lower end of support set and adapter sleeve and affect the precision of foil gauge, flange has effectively increased contact area simultaneously, reduce pressure, the serviceable life of extension fixture, after long-time use, when gland produces wearing and tearing, distortion etc., can change in time, the maintenance cost of package unit is lower.Adapter sleeve in the present embodiment, thread bush are integral type structure, and its structure is identical with the spline shaft structure in bearing-hub assembly, can directly replace with splined shaft; Flange cover is integral type structure with support set, its structure is identical with the flange inner ring assembly in bearing-hub assembly, can directly replace with flange inner ring assembly, very convenient in the time that vehicle hub bearing assembly overhauls like this, ectocine condition is little, and accuracy is more increased.
A kind of foil gauge caliberating device as shown in Figure 2, for calibration strain sheet, comprise pedestal 1, contiguous block 2 and adapter sleeve 3, contiguous block is connected with foundation bolt, the lower end of adapter sleeve is connected with contiguous block, the center, upper end of adapter sleeve 3 upwards extends to form thread bush 4, the outside of thread bush is arranged with flange cover 6, the lower end of flange cover extends to form support set 7 downwards, support set 7 be set in the outside of thread bush and with thread bush spline joint, foil gauge 8 is attached to the outer periphery of support set 7, as shown in Figure 3, foil gauge is connected with strain adapter 9 after adopting full-bridge mode to connect, strain adapter is connected with industrial computer 10, the upper end of flange cover 6 is provided with briquetting 18, the lower end of briquetting 18 extends to form backstay 19 downwards, the lower end of backstay 19 is truncated cone-shaped structure, the lower end of backstay 19 is stretched in thread bush 4 and is formed clearance fit with thread bush, the center, upper surface of briquetting is provided with conical bore 20, in conical bore, be provided with steel ball 21, the axis conllinear of the axis of conical bore 20 and backstay 19, the pressure arm 22 that adds carrier aircraft is pressed on steel ball exerts pressure to steel ball, support set generation deformation, foil gauge is experienced this strain, thereby output signal is through the processing of overstrain adapter, and then after the processing of the signal processing system in industrial computer, obtain corresponding voltage signal, add after specific pressure of the every loading of carrier aircraft, recording voltage value, finally draw the linear relationship of load and voltage, therefore in splined shaft detection device for bolt pretightening force, in the time that torque spanner rotates, the magnitude of voltage showing on industrial computer directly can be converted into corresponding pretightning force value, thereby draw intuitively the relation of moment of torsion and pretightning force.Foil gauge directly takes out briquetting after demarcating, and packs splined shaft bolt into, re-use dial torque wrench and turn bolt, obtain the respective value of one group of moment of torsion and voltage, be then converted into the respective value of one group of moment of torsion and pretightning force, finally obtain the linear relationship of pretightning force and moment of torsion.Therefore, the utlity model has in the situation that not destroying bolt self structure, detect fast and accurately the beneficial effect of bolt pretightening.
Claims (9)
1. a wheel hub splined shaft detection device for bolt pretightening force, it is characterized in that, comprise pedestal (1), contiguous block (2) and adapter sleeve (3), described contiguous block is fixedly connected with pedestal, the end face center of contiguous block (2) is provided with square hole, the lower end of described adapter sleeve (3) is stretched in square hole and is connected with contiguous block, the center, upper end of adapter sleeve (3) upwards extends to form thread bush (4), in thread bush, be provided with threaded hole, in threaded hole, be provided with splined shaft bolt (5), the outside of described thread bush (4) is arranged with flange cover (6), the lower end of described flange cover (6) extends to form support set (7) downwards, described support set (7) be set in the outside of thread bush and with thread bush spline joint, the outer periphery of support set (7) is provided with some foil gauges (8), described foil gauge (8) is connected with strain adapter (9), described strain adapter (9) is connected with industrial computer (10), the upper end of splined shaft bolt (5) is provided with sleeve (11), described sleeve (11) is connected with dial torque wrench (12).
2. wheel hub splined shaft detection device for bolt pretightening force according to claim 1, is characterized in that, described foil gauge (8) adopts full-bridge mode to connect.
3. wheel hub splined shaft detection device for bolt pretightening force according to claim 1, it is characterized in that, between described contiguous block (2) and pedestal (1), bolt is connected, and described pedestal is provided with groove (13), and the bottom of described contiguous block (2) is provided with the boss corresponding with groove (14).
4. according to the wheel hub splined shaft detection device for bolt pretightening force described in claim 1 or 3, it is characterized in that, be provided with cavity (15) in adapter sleeve (3), described cavity and threaded hole connect.
5. wheel hub splined shaft detection device for bolt pretightening force according to claim 1, it is characterized in that, outside, support set (7) lower end is provided with annular breach, in described annular breach, be provided with gland (16), the lower end of described gland (16) stretches out and forms flange (17), and the upper end in contact of described flange and adapter sleeve supports.
6. wheel hub splined shaft detection device for bolt pretightening force according to claim 1 or 5, is characterized in that, between the lower surface of described support set and inner hole wall, is provided with chamfering.
7. a foil gauge caliberating device, be used for demarcating foil gauge as described in claim 1, it is characterized in that, comprise pedestal (1), contiguous block (2) and adapter sleeve (3), described contiguous block is connected with foundation bolt, the lower end of adapter sleeve is connected with contiguous block, the center, upper end of adapter sleeve (3) upwards extends to form thread bush (4), the outside of described thread bush is arranged with flange cover (6), the lower end of described flange cover extends to form support set (7) downwards, described support set (7) be set in the outside of thread bush and with thread bush spline joint, foil gauge (8) is attached to the outer periphery of support set (7), described foil gauge is connected with strain adapter (9), described strain adapter is connected with industrial computer (10), the upper end of described flange cover (6) is provided with briquetting (18), the lower end of described briquetting (18) extends to form backstay (19) downwards, the lower end of described backstay (19) is stretched in thread bush (4) and is formed clearance fit with thread bush, the center, upper surface of described briquetting is provided with conical bore (20), in described conical bore, be provided with steel ball (21).
8. a kind of foil gauge caliberating device according to claim 7, is characterized in that, the axis of described conical bore (20) and the axis conllinear of backstay (19).
9. a kind of foil gauge caliberating device according to claim 7, is characterized in that, the lower end of described backstay (19) is truncated cone-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645621.6U CN203629736U (en) | 2013-10-21 | 2013-10-21 | Wheel hub spline shaft bolt pretightening force detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645621.6U CN203629736U (en) | 2013-10-21 | 2013-10-21 | Wheel hub spline shaft bolt pretightening force detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203629736U true CN203629736U (en) | 2014-06-04 |
Family
ID=50816202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320645621.6U Expired - Fee Related CN203629736U (en) | 2013-10-21 | 2013-10-21 | Wheel hub spline shaft bolt pretightening force detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203629736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568283A (en) * | 2013-10-21 | 2015-04-29 | 浙江万向精工有限公司 | Pre-tightening force detection device for spline shaft bolt of hub |
-
2013
- 2013-10-21 CN CN201320645621.6U patent/CN203629736U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568283A (en) * | 2013-10-21 | 2015-04-29 | 浙江万向精工有限公司 | Pre-tightening force detection device for spline shaft bolt of hub |
| CN104568283B (en) * | 2013-10-21 | 2017-01-25 | 浙江万向精工有限公司 | Pre-tightening force detection device for spline shaft bolt of hub |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104568280B (en) | Pre-tightening force detection device for hub bearing bolt | |
| CN203561471U (en) | Wheel bearing bolt pretightening force detection device | |
| CN203561472U (en) | Wheel core axle bolt pretightening force detection device | |
| CN103245452B (en) | A kind of High-strength bolt axial force measuring method | |
| CN104568283B (en) | Pre-tightening force detection device for spline shaft bolt of hub | |
| CN205373931U (en) | Connecting piece | |
| CN107677415B (en) | Torque wrench calibrating device | |
| CN104568282B (en) | Vehicle wheel bearing bolt pretightening force detection device | |
| CN104713674A (en) | Device for detecting axial tightening force of hexagonal head bolts | |
| CN104034528A (en) | Bearing temperature rising and friction moment tester and test method | |
| CN203561473U (en) | Hub bearing bolt pretightening force detection device | |
| CN101419105B (en) | Shaft part force measuring device | |
| CN203629736U (en) | Wheel hub spline shaft bolt pretightening force detection device | |
| CN104568281B (en) | Vehicle wheel core shaft bolt pretightening force detection device | |
| CN203561575U (en) | Testing apparatus for detecting friction coefficients of thread engagement surfaces | |
| CN104677535B (en) | Test sensor for dynamic torque of hexagonal shaft | |
| CN204976485U (en) | Shaft coupling alignment specialized tool | |
| CN202785411U (en) | Device for detecting bearing of tower crane | |
| CN201307042Y (en) | Shaft component force measuring device | |
| CN102607750A (en) | Test-bed for friction torque of rolling bearing | |
| CN204422122U (en) | Wheel six square shaft torsion-testing sensor | |
| CN210005137U (en) | Device for measuring stress of rolling pin in lead screw nut by stress ring method | |
| TWI422462B (en) | Tool holder structure having a sensor member | |
| CN205218970U (en) | Moment of torsion controlling means | |
| CN202867492U (en) | Bolt provided with pretightening force pointer detecting ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20191021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |