CN103332066A - Fixed-gap shaft head nut and method for adjusting gap of bearings thereof - Google Patents
Fixed-gap shaft head nut and method for adjusting gap of bearings thereof Download PDFInfo
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- CN103332066A CN103332066A CN2013102995984A CN201310299598A CN103332066A CN 103332066 A CN103332066 A CN 103332066A CN 2013102995984 A CN2013102995984 A CN 2013102995984A CN 201310299598 A CN201310299598 A CN 201310299598A CN 103332066 A CN103332066 A CN 103332066A
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- axis head
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Abstract
The invention discloses a fixed-gap shaft head nut. The fixed-gap shaft head nut comprises a shaft head nut body which is installed on a shaft head of a shaft body and matched with outer threads of the shaft head. A lock washer is arranged on one side of the shaft head nut body, an inner bearing and an outer bearing are arranged on one side of the lock washer, a groove cavity penetrating through the whole shaft head nut body and a pin shaft which is inserted inside the groove cavity are arranged on the shaft head nut body, a compression spring is arranged on the pin shaft in a sleeved mode, the compression spring is arranged inside the groove cavity, and one end of the compression spring abuts against the flange of the pin shaft, a plurality of holes are evenly formed in the circumference line, corresponding to the pin shaft, of the lock washer, and the diameter of each hole is matched with the diameter of the pin shaft. An existing inaccurate adjustment method of the gap between hub bearings is changed, the gap between the bearings is very simple, convenient and precise to adjust, and therefore installing performance of an axle is improved.
Description
Technical field
The present invention relates to trailer superimposed trailer parts technical field, specifically, relate to a kind of fixed gap axis head nut and bearing space method of adjustment thereof that is installed on the axletree spindle nose.
Background technology
Axis head nut is mounted in one of part on the trailer superimposed trailer axletree spindle nose, outer bearing and oil sealing thereof in being equipped with on the axletree spindle nose, in the prior art, the gap of interior outer bearing is by the axis head nut adjustment, generally adopt the way of Hui Song, be example with two big spindle nose series, concrete method of operation is the spring cotter of taking apart on the spindle nose, the special-purpose anistree sleeve of use axis head nut and torque-indicating wrench fastening nut when rotating wheel hub (is not having under the situation of suitable torque-indicating wrench to the moment of torsion of stipulating, with the feel wheel hub rotate the braking sense arranged slightly till), contrarotation axis head nut 1/7 circle then is with the cotter-pin hold of nut notch alignment spindle nose and insert spring cotter.The shortcoming of this adjustment mode is that the bearing space adjustment is inaccurate, and it is not high to adjust precision, and the end play is big, and end float misalignment is big, and bearing and spindle nose wear and tear easily, bring hidden danger to driving vehicle.
On the other hand, because spindle nose is provided with cotter-pin hold, make the externally threaded burr of spindle nose at pin-and-hole position be difficult to cleaning, enter bearing inside easily, influence bearing life.
Summary of the invention
The objective of the invention is to overcome not high, the spacious deficiency of the easy pine of bearing of bearing space adjustment precision of existing trailer superimposed trailer axletree spindle nose, provide a kind of bearing space to adjust fixed gap axis head nut and bearing space method of adjustment thereof accurately.
Technical scheme of the present invention is: a kind of fixed gap axis head nut, comprise on the spindle nose that is installed in axis body and the axis head nut that cooperates with the spindle nose outside thread, one side of axis head nut is provided with stop washer, side at stop washer is provided with inside and outside bearing, described axis head nut is provided with the vallecular cavity that runs through whole axis head nut and is inserted in the interior bearing pin of described vallecular cavity, be arranged with pressure spring on the bearing pin, described pressure spring is in described vallecular cavity, and described pressure spring one end is resisted against on the flange of described bearing pin; Evenly be provided with a plurality of holes on the circumference of the corresponding described bearing pin of described stop washer, diameter and the pin diameter in described hole are suitable.
The head of described bearing pin is provided with draw ring.
Radially be provided with pin-and-hole on the described bearing pin, in the described pin-and-hole straight pin be set.
A kind of fixed gap axis head nut bearing space method of adjustment may further comprise the steps:
A) use axis head nut socket wrench specially adapted for it and torque-indicating wrench to tighten axis head nut to setting torque rating,
B) free end that described draw ring is pulled outwardly the bearing pin of sening as an envoy to bounces back in the vallecular cavity,
C) the rotating shaft head nut makes bearing pin along sliding on the circumference at the place, hole of stop washer, and until the free end of the bearing pin hole on the stop washer, the pressure spring in the axis head nut vallecular cavity inserts the bearing pin free end in the hole on the stop washer.
Further, described step a comprises: use axis head nut socket wrench specially adapted for it and torque-indicating wrench to tighten axis head nut to moment of torsion 365-395Nm earlier, then axis head nut is returned Song Yizhou, re-use torque-indicating wrench and tighten axis head nut to moment of torsion 10-50Nm.
Further, described step a can be: use axis head nut socket wrench specially adapted for it and torque-indicating wrench to tighten axis head nut to moment of torsion 10-50Nm.
The present invention compared with prior art, its beneficial effect is:
The present invention is provided with lash adjusting device at axis head nut, makes bearing space control in an accuracy rating of determining, clearance control precision height makes inside and outside bearing space adjust very convenient and accurate.Be example with embodiments of the invention, when evenly distributing 30 holes on the stop washer, calculate with pitch 2.117mm that the adjustment precision in gap can be controlled in the 0.07mm.
The bearing pin of lash adjusting device inserts in the hole of stop washer when the gap is adjusted, make axis head nut keep transfixion, therefore, can save and have the spring cotter that is used for preventing the nut rotation on the axis head nut now, thereby solve the problem of the difficult cleaning of axis head nut burr.
Description of drawings
Fig. 1 is fixed gap axis head nut scheme of installation of the present invention.
Fig. 2 is fixed gap axis head nut front view of the present invention.
Fig. 3 is fixed gap axis head nut side sectional view of the present invention.
Fig. 4 is stop washer structural representation of the present invention.
The specific embodiment
Below pass through the specific embodiment, and the invention will be further described by reference to the accompanying drawings.
As shown in Figures 1 to 4, fixed gap axis head nut of the present invention is installed in the end of spindle nose, outer bearing 7 on spindle nose, also being equipped with, and wherein neck bearing is resisted against on the axle journal, separate with bearing seat between the interior outer bearing 7, wheel hub 8 free rotation ground supportings are on interior outer bearing 7.The negative thread of axis head nut 2 cooperates on the free end that is screwed to spindle nose with the outside thread of spindle nose, axis head nut 2 be screwed into the degree of depth can adjust in the tolerance clearance of outer bearing 7.The opening of wheel hub cover 9 cap seal wheel hubs 8 prevents that dust from entering the inside of wheel hub 8.
See shown in Figure 3ly, the front, the outside at outer bearing is provided with stop washer 6, and the inner end surface of axis head nut 2 and stop washer 6 are fitted.See shown in Figure 4, be evenly distributed with 30 holes 61 on the stop washer 6, the diameter in hole 61 and bearing pin 1 adapt, bearing pin 1 is arranged on the inside of axis head nut 2, specifically sees shown in Figure 3ly, is provided with a vallecular cavity 21 at axis head nut 2, vallecular cavity 21 runs through the thickness of whole axis head nut 2, vallecular cavity 21 is divided into two different chambers of internal diameter, and wherein the chamber of the bigger and close stop washer 6 of internal diameter is spring cavity, is provided with pressure spring 3 in the spring cavity; The chamber of the less and close draw ring 5 of internal diameter is bearing pin chambeies.The outer end of bearing pin 1 is provided with draw ring 5, forms one thereon and is pulled outwardly the axle 1 required operating surface of pulling pin.The other end of bearing pin 1 is provided with a flange 11, the diameter of flange 11 and spring cavity internal diameter adapt, pressure spring 3 is set in outside the bearing pin 1 and is arranged in the spring cavity, pressure spring 3 one ends are resisted against on the step end face that spring cavity and bearing pin chamber be connected to form, and the other end is resisted against a side of the flange 11 of bearing pin 1.When pressure spring 3 was compressed, it had had the potential energy that flange 11 is pushed open outward.Bearing pin 1 is provided with pin-and-hole near an end of draw ring 5, and pin-and-hole radially arranges, and is inserted with straight pin 4 in the pin-and-hole, also is provided with the positioning groove of straight pin 4 in the vallecular cavity 21 of axis head nut 2, makes bearing pin 1 remain in the vallecular cavity 21.Be under the free state at pressure spring 3, the free end of bearing pin 1 stretches out from vallecular cavity 21, and the thickness of its extension elongation and stop washer 6 is makeed an appointment, and the outside end face of flange 11 is concordant with the end face of axis head nut 2.
When axis body has been installed interior outer bearing 7, wheel hub 8 parts such as grade and with after axis head nut 2 locking, use socket wrench specially adapted for it and torque-indicating wrench fastening nut when rotating wheel hub 8 to arrive the moment of torsion 10-50Nm of regulation, preferred 15 Nm, then the draw ring 5 on the axis head nut 2 is outwards pulled out, the free end of bearing pin 1 is withdrawn in the vallecular cavity 21 of axis head nut 2, pressure spring 3 is compressed to have compression potential energy, slow rotating shaft head nut 2 then, make relative stop washer 6 rotations of end face of axis head nut 2, when axis head nut 2 rotates hole 61 to the free end of bearing pin 1 over against stop washer 6, the free end of bearing pin 1 no longer is subjected to the prevention of stop washer 6 and drops on fully in the scope in hole 61, the compression potential energy of pressure spring 3 transforms the kinetic energy of bearing pin 1, the free end of bearing pin 1 inserts in the hole 61 of stop washer 6, and axis head nut 2 can not rotate again.The negative thread pitch of axis head nut 2 is designed to 2.117mm, and evenly is furnished with 30 holes on the stop washer 6, and therefore, when draw ring 5 was pulled out bearing pin 1 and adjusted the rotary gap of axis head nut 2, its precision control had improved three times.
As another embodiment, in above-mentioned bearing space method of adjustment, axletree at different series, the step of adjusting the setting torque rating of axis head nut 2 also can be such: when axis body has been installed interior outer bearing 7, wheel hub 7 parts such as grade and with after axis head nut 2 locking, use socket wrench specially adapted for it and torque-indicating wrench when rotating wheel hub 8, to tighten axis head nut 2 to moment of torsion 380Nm, offset neck bearing in the wheel hub 8 to the free gap between the axis head nut 2, guarantee that internal clearance is 0, and then with 2 times Song Yizhou of axis head nut (circle), based on 380Nm, suitably adjust the regulation torque scope of its 15Nm forward or backward with the torque-indicating wrench fastening nut.All the other steps and last same.
The present invention has changed not method of adjustment accurately of existing hub bearing gap, makes the adjustment of bearing space very easy and accurate, thereby has improved the installation capability of axletree.
Claims (6)
1. fixed gap axis head nut, comprise on the spindle nose that is installed in axis body and the axis head nut that cooperates with the spindle nose outside thread, one side of axis head nut is provided with stop washer, side at stop washer is provided with inside and outside bearing, it is characterized in that: described axis head nut is provided with the vallecular cavity that runs through whole axis head nut and is inserted in the interior bearing pin of described vallecular cavity, be arranged with pressure spring on the bearing pin, described pressure spring is in described vallecular cavity, and described pressure spring one end is resisted against on the flange of described bearing pin; Evenly be provided with a plurality of holes on the circumference of the corresponding described bearing pin of described stop washer, diameter and the pin diameter in described hole are suitable.
2. fixed gap axis head nut according to claim 1, it is characterized in that: the head of described bearing pin is provided with draw ring.
3. fixed gap axis head nut according to claim 2 is characterized in that: radially be provided with pin-and-hole on the described bearing pin, in the described pin-and-hole straight pin be set.
4. fixed gap axis head nut bearing space method of adjustment according to claim 3 is characterized in that may further comprise the steps:
A) use axis head nut socket wrench specially adapted for it and torque-indicating wrench to tighten axis head nut to setting torque rating,
B) free end that described draw ring is pulled outwardly the bearing pin of sening as an envoy to bounces back in the vallecular cavity,
C) the rotating shaft head nut makes bearing pin along sliding on the circumference at the place, hole of stop washer, and until the free end of the bearing pin hole on the stop washer, the pressure spring in the axis head nut vallecular cavity inserts the bearing pin free end in the hole on the stop washer.
5. fixed gap axis head nut bearing space method of adjustment according to claim 4, it is characterized in that described step a comprises: use axis head nut socket wrench specially adapted for it and torque-indicating wrench to tighten axis head nut to moment of torsion 365-395Nm earlier, then axis head nut is returned Song Yizhou, re-use torque-indicating wrench and tighten axis head nut to moment of torsion 10-50Nm.
6. fixed gap axis head nut bearing space method of adjustment according to claim 4 is characterized in that described step a is: use axis head nut socket wrench specially adapted for it and torque-indicating wrench to tighten axis head nut to moment of torsion 10-50Nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102995984A CN103332066A (en) | 2013-07-17 | 2013-07-17 | Fixed-gap shaft head nut and method for adjusting gap of bearings thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102995984A CN103332066A (en) | 2013-07-17 | 2013-07-17 | Fixed-gap shaft head nut and method for adjusting gap of bearings thereof |
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| CN103332066A true CN103332066A (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102995984A Pending CN103332066A (en) | 2013-07-17 | 2013-07-17 | Fixed-gap shaft head nut and method for adjusting gap of bearings thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620766A (en) * | 2016-07-15 | 2018-01-23 | 斯凯孚公司 | Hub with center nut |
| CN108443300A (en) * | 2018-05-11 | 2018-08-24 | 万雷 | A kind of thread connector for preventing from loosening |
| CN108466525A (en) * | 2018-03-15 | 2018-08-31 | 泉州臻美智能科技有限公司 | A kind of anti-sideslip safety and stability formula automobile front drive axle driving mechanism |
| CN109154310B (en) * | 2016-04-05 | 2024-03-22 | Itt制造企业有限责任公司 | EZ adjusting impeller clearance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2322178A (en) * | 1997-01-31 | 1998-08-19 | Meritor Heavy Vehicle Sys Ltd | Hub and axle assembly lock nut |
| CN2303120Y (en) * | 1996-09-23 | 1999-01-06 | 邹高扬 | Looseness-proof screw |
| CN201661569U (en) * | 2009-10-09 | 2010-12-01 | 广西玉柴重工有限公司 | Inserted pin used for hinge pin locking |
| CN201763835U (en) * | 2010-08-25 | 2011-03-16 | 安徽华菱车桥有限公司 | Hub bearing pre-tightening force adjusting device for automobile front axle |
| CN201923206U (en) * | 2011-01-04 | 2011-08-10 | 安徽福马车桥有限公司 | Front axle wheel hub locking device of automobile |
| CN203381440U (en) * | 2013-07-17 | 2014-01-08 | 广东富华工程机械制造有限公司 | Shaft head nut assembly structure |
-
2013
- 2013-07-17 CN CN2013102995984A patent/CN103332066A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303120Y (en) * | 1996-09-23 | 1999-01-06 | 邹高扬 | Looseness-proof screw |
| GB2322178A (en) * | 1997-01-31 | 1998-08-19 | Meritor Heavy Vehicle Sys Ltd | Hub and axle assembly lock nut |
| CN201661569U (en) * | 2009-10-09 | 2010-12-01 | 广西玉柴重工有限公司 | Inserted pin used for hinge pin locking |
| CN201763835U (en) * | 2010-08-25 | 2011-03-16 | 安徽华菱车桥有限公司 | Hub bearing pre-tightening force adjusting device for automobile front axle |
| CN201923206U (en) * | 2011-01-04 | 2011-08-10 | 安徽福马车桥有限公司 | Front axle wheel hub locking device of automobile |
| CN203381440U (en) * | 2013-07-17 | 2014-01-08 | 广东富华工程机械制造有限公司 | Shaft head nut assembly structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109154310B (en) * | 2016-04-05 | 2024-03-22 | Itt制造企业有限责任公司 | EZ adjusting impeller clearance |
| CN107620766A (en) * | 2016-07-15 | 2018-01-23 | 斯凯孚公司 | Hub with center nut |
| CN107620766B (en) * | 2016-07-15 | 2021-05-04 | 斯凯孚公司 | Hub unit with central nut |
| CN108466525A (en) * | 2018-03-15 | 2018-08-31 | 泉州臻美智能科技有限公司 | A kind of anti-sideslip safety and stability formula automobile front drive axle driving mechanism |
| CN108466525B (en) * | 2018-03-15 | 2020-11-03 | 湖北和德工业科技有限公司 | Sideslip-preventing safe and stable type automobile front drive axle driving mechanism |
| CN108443300A (en) * | 2018-05-11 | 2018-08-24 | 万雷 | A kind of thread connector for preventing from loosening |
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Application publication date: 20131002 |