CN102230503A - Abrasion-proof rotation structure - Google Patents
Abrasion-proof rotation structure Download PDFInfo
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- CN102230503A CN102230503A CN2011101881629A CN201110188162A CN102230503A CN 102230503 A CN102230503 A CN 102230503A CN 2011101881629 A CN2011101881629 A CN 2011101881629A CN 201110188162 A CN201110188162 A CN 201110188162A CN 102230503 A CN102230503 A CN 102230503A
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- elasticity
- rotational structure
- rotatingshaft
- friction top
- wear
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Abstract
The invention discloses an abrasion-proof rotation structure. The abrasion-proof rotation structure is provided with a tightening cap, wherein the tightening cap is provided with a thread suitable to be screwed into a screwed hole; an outer elastic gasket is arranged between the tightening cap and an inner elastic gasket; a contact surface between the outer elastic gasket and the inner elastic gasket is in force fit; the contact surface is gradually expanded along the direction of the tightening cap which is screwed into the screwed hole. When the abrasion-proof rotation structure is practically used and when a clearance between the inner elastic gasket and the outer elastic gasket or between the inner elastic gasket and a rotating shaft exists due to abrasion, the tightening cap is screwed up clockwise or anticlockwise along the direction of the thread on the outer wall of the tightening cap; the tightening cap is extruded to the direction of the front section of the rotating shaft along the thread; meanwhile, the outer elastic gasket downwards moves to extrude the inner elastic gasket so as to solve the problem that a fixing device in the prior art can not be normally used after abrasion.
Description
Technical field
The present invention relates to a kind of rotating mechanism, be specifically related to a kind of wear-resisting rotational structure.
Background technique
Rotational structure has in the first-class equipment of the fire hose very to be used widely.Early stage rotational structure normally utilizes the Spielpassung between rigid rotation axle and the hole to realize rotating, owing to have higher intensity, this structure is normally used for the occasion higher to the life requirements of part.But this early stage rotational structure defective is: owing to be provided with the gap between described axle and the hole, just make described rotatingshaft depart from the axis direction in hole easily, the phenomenon of " off-centre " promptly takes place.
In order to solve the above-mentioned rotatingshaft problem of " off-centre " easily, Chinese patent literature CN200946620Y discloses a kind of rotational structure, a kind of device that rotatingshaft is fixed and adjusted is provided in this rotational structure, rotatingshaft in this patent is a kind of " eccentric shaft ", between the big end of described eccentric shaft and tightening nut, be set with the swelling unit that at least two bulging joining sleeves form, the external diameter of swelling unit and internal diameter respectively with support on the tapped hole internal diameter and the external diameter of eccentric shaft suitable, axially stacked and its surface of contact is the inclined-plane between two bulging joining sleeves, thereby make when eccentric shaft moves radially, resiliently deformable can take place in described swelling unit, tapped hole on the swelling support is also held eccentric shaft tightly, thereby reaches the purpose that described eccentric shaft is fixed.
Above-mentioned rotational structure of the prior art, by being set, can fix described rotatingshaft really described swelling unit at the use initial stage, but increase along with service time, described swelling unit with the process of the long-term friction of described rotatingshaft in be easy to generate wearing and tearing, thereby make between described swelling unit and the described rotatingshaft and produce the gap, and the generation in described gap can make the fixation of described swelling unit forfeiture to described rotatingshaft, and causes described rotatingshaft can't normally use because of the problem of " off-centre " again.
In addition, in the above-mentioned rotational structure of the prior art, described eccentric shaft except rubbing with described swelling unit, also can rub with described lining in rotation process, because the friction position is many, the phenomenon of described eccentric shaft easier appearance wearing and tearing after long-time the use.
Summary of the invention
In order to solve the rotational structure that available technology adopting swelling unit is fixed, increase along with service time, described swelling unit with the process of the long-term friction of described rotatingshaft in be easy to generate wearing and tearing, thereby make between described swelling unit and the described rotatingshaft and produce the gap, and cause described rotatingshaft because the problem of " off-centre " and proper functioning again, and easy wear problems the invention provides a kind of wear-resisting rotational structure to described rotatingshaft because the friction position is many.
The technological scheme of wear-resisting rotational structure of the present invention is:
A kind of wear-resisting rotational structure comprises:
Be provided with the support of tapped hole;
Rotatingshaft, described rotatingshaft are arranged in the described support;
Described rotational structure also is provided with:
The elasticity internal gasket, described elasticity internal gasket is nested to be arranged on the described rotatingshaft;
Limit stoper is around being arranged on the described rotatingshaft and inconsistent with the bottom of described elasticity internal gasket;
Described rotational structure also comprises friction top, and described friction top is provided with the suitable screw thread that screws in described tapped hole, and the bottom of described friction top has the gap that is suitable for described friction top screw-in with described tapped hole bottom;
Between described friction top and described elasticity internal gasket, be provided with pad outside the elasticity, the surface of contact compression fit of outer pad of described elasticity and described elasticity internal gasket, described surface of contact is expanded gradually along the direction that described friction top screws in described tapped hole.
Along the screw-in direction of described friction top, also be provided with a mounting hole on the described support, the internal diameter of described axle mounting hole and the external diameter of described rotatingshaft are suitable.
The inboard of described friction top has the groove that holds the outer pad of described elasticity.
Between the inwall of axle mounting hole and described rotatingshaft, be provided with radially swelling part.
Described radially swelling part is made up of interior swelling part and outer swelling part, and the surface of contact of described interior swelling part and outer swelling part is the inclined-plane.
Form at least one seal groove on the rotatingshaft in described axle mounting hole, O type circle is set in described seal groove.
Described friction top top extends upward and forms the bare terminal end that protrudes in described support top;
Be provided with protective cover around described bare terminal end, described protective cover is threaded with described bare terminal end, and the lower surface of described protective cover and described support are conflicted and be provided with.
The angle of described surface of contact and described horizontal plane is 45 °-65 °.
The outer pad of described elasticity is the pitch cone that matches with the surface of contact of described elasticity internal gasket, and described pitch cone is expanded gradually along the direction that described friction top screws in described tapped hole.
The outer pad of described elasticity internal gasket and described elasticity is the body of non-closure, and the indentation, there gap of the body of described non-closure is 0.5-2mm.
The advantage of wear-resisting rotational structure of the present invention is:
(1) wear-resisting rotational structure of the present invention, the surface of contact compression fit of outer pad of described elasticity and described elasticity internal gasket, described surface of contact is expanded gradually along the direction that described friction top screws in described tapped hole; Therefore the outer pad of described elasticity can produce one extruding force to the inclined-plane of described elasticity internal gasket, described extruding force is being decomposed into power downward on the axial direction and one in the radial direction towards the power in the center of circle on the inclined-plane, thereby realized fastening effect to described pad, that has effectively avoided rotatingshaft axially collects together phenomenon, and has eliminated gap radially.The outer periphery of the present invention's pad outside described elasticity is equipped with friction top, when reality is used, when outside described elasticity internal gasket and the described elasticity between the pad or described elasticity internal gasket and described rotatingshaft produce the gap because of wearing and tearing the time, can select to tighten clockwise or counterclockwise described friction top according to the direction of screw thread on the described friction top outer wall, with of the direction extruding of described friction top along described screw thread towards described rotatingshaft leading portion, driving the outer pad of described elasticity simultaneously moves down described elasticity internal gasket is pushed, thereby the elimination gap has solved the problem that fixing device of the prior art can't normally be used again after wearing and tearing.
Simultaneously, rotational structure described in the present invention, described rotatingshaft only produce friction with described elasticity internal gasket in rotation process, and do not contact with the inwall of described tapped hole, this setup has reduced the friction position of described rotatingshaft, has effectively reduced the degree of wear of described rotatingshaft.
In addition, in the rotational structure described in the present invention, adopt engage thread to connect between described friction top and the described tapped hole, thereby can regulate the extruding degree of outer pad of described elasticity and internal gasket by the screw-in degree of regulating described friction top in use, the degree of flexibility when thereby the described rotatingshaft of may command rotates, when described rotatingshaft both forwards fixed position to, thereby can fix rotatingshaft by tightening described friction top.
(2) wear-resisting rotational structure of the present invention is provided with radially swelling part between the inwall of axle mounting hole and described rotatingshaft.By described swelling part is set, the use that matches with outer pad of the elasticity on the described extension and elasticity internal gasket has prevented the phenomenon of described rotatingshaft " off-centre " more effectively.
(3) wear-resisting rotational structure of the present invention forms at least one seal groove on the rotatingshaft in described axle mounting hole, and O type circle is set in described seal groove.Described O type has enclosed the effect of sealing, can be used for and need seal water, oil, perhaps needs to feed the occasion of gas.
(4) wear-resisting rotational structure of the present invention, described compressing is stamped the outside formation bare terminal end that part is exposed to described support.By described bare terminal end is set, when needs are tightened described friction top, only need to use spanner or the described bare terminal end of other tool holder to rotate described rotatingshaft again and get final product, be convenient to the staff and operate.
(5) wear-resisting rotational structure of the present invention is provided with protective cover around described bare terminal end, and described protective cover and described bare terminal end are by being threaded, and the lower surface of described protective cover is close to described support setting.The effect of described protective cover is to keep the cleaning of recess in described rotatingshaft and the friction top, prevents that dust or dirt from entering.
(6) wear-resisting rotational structure of the present invention, it is 45 °-65 ° that the outer pad of described elasticity and the surface of contact of described elasticity internal gasket and the angle of described horizontal plane are set.The reason of She Zhiing is like this, if the angle setting is too small, the extruding force that is subjected on the then described inclined-plane mainly concentrates on axially, and the decomposing force that the footpath makes progress is less, makes to be easy to generate the gap between described elasticity internal gasket and the described rotatingshaft; If it is excessive that angle is provided with, then extruding force mainly concentrates on radially, and the decomposing force axially is less, and that just can't effectively control rotatingshaft axially collects together phenomenon, the present invention is 45 °-65 ° by the angle that described surface of contact and described horizontal plane are set, and has effectively avoided above-mentioned situation.
(7) wear-resisting rotational structure of the present invention, the outer pad of described elasticity internal gasket and described elasticity is the body of non-closure, the indentation, there gap of described non-closed body is 0.5-2mm.The outer pad of described elasticity internal gasket of the present invention and described elasticity is set to the shape of non-closure, when installation and removal, after described friction top taken off, again resilient pad is directly taken off and get final product, be convenient to staff's operation, the indentation, there gap that described non-closed annular is set in addition is 0.5-2mm, if it is excessive that reason is that the gap is provided with, then can have influence on the fastening effect of described pad to described rotatingshaft, and the gap setting is too small, when temperature changes, owing to the described pad of effect that expands with heat and contract with cold deforms easily, if the phenomenon of the too small easy generation bulge that the gap is provided with.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the cross section structure schematic representation of wear-resisting rotational structure of the present invention;
Fig. 2 is the cross section structure schematic representation of the convertible mode of wear-resisting rotational structure of the present invention;
Fig. 3 is the cross section structure schematic representation of radially swelling part of the present invention;
Fig. 4 is the cross section structure schematic representation of the another convertible mode of wear-resisting rotational structure of the present invention;
Reference character is expressed as among the figure:
The 1-tapped hole; The 2-support; The 3-rotatingshaft; 4-elasticity internal gasket; The 5-limit stoper; The outer pad of 6-elasticity; The 7-friction top; 8-is the swelling part radially; Swelling part in the outer swelling part 10-of 9-; The 11-seal groove; 12-O type circle; The 13-bare terminal end; The 14-protective cover; The 15-groove; 16-axle mounting hole.
Embodiment
Embodiment 1
Wear-resisting rotational structure described in the present embodiment comprises as shown in Figure 1: the support 2 that is provided with tapped hole 1;
Described rotational structure also is provided with:
Elasticity internal gasket 4, described elasticity internal gasket 4 nested being arranged on the described rotatingshaft 3;
Described rotational structure also comprises friction top 7, and described friction top 7 is provided with the suitable screw thread that screws in described tapped hole 1, and the bottom of described friction top 7 has the gap that is suitable for described friction top 7 screw-ins with described tapped hole 1 bottom;
Between described friction top 7 and described elasticity internal gasket 4, be provided with pad 6 outside the elasticity, the surface of contact compression fit of outer pad 6 of described elasticity and described elasticity internal gasket 4, described surface of contact is expanded gradually along the direction that described friction top screws in described tapped hole 1, and the angle of described surface of contact and described horizontal plane is 42 °.
The top of described friction top 7 extends upward and forms bare terminal ends 13 outstanding and described support 2 tops; As selectable mode of execution, also can not establish bare terminal end 13.
The using method of the rotational structure in the present embodiment is:
Described friction top 7 is connected with described support 2 by screw thread, squeezing action by the outer pad 6 of elasticity internal gasket 4 and elasticity in the friction top 7, on radial and axial direction, carry out fastening to described rotatingshaft 3, outside long-term use causes described elasticity internal gasket 4 and described elasticity between the pad 6 or described elasticity internal gasket 4 and described rotatingshaft 3 produce the gap because of wearing and tearing the time, can select to tighten clockwise or counterclockwise described friction top 7 according to the direction of screw thread on described friction top 7 outer walls, the direction of described friction top 7 along described screw thread towards described tapped hole 1 bottom screwed in, driving the outer pad 6 of described elasticity simultaneously moves down described elasticity internal gasket 4 is pushed, thereby eliminate gap radially, because the friction top 7 described in the present embodiment is provided with bare terminal end 13, when tightening friction top 7, only need use spanner or the described bare terminal end 13 of other tool holder to rotate described rotatingshaft 3 again and get final product, be convenient to the staff and operate.
In use, in order to reduce the wearing and tearing between the outer pad 6 of elasticity internal gasket 4 and elasticity, present embodiment is provided with lube layer between the pad 6 outside described elasticity internal gasket 4 and described elasticity.
Embodiment 2
Wear-resisting rotational structure described in the present embodiment comprises as shown in Figure 2: the support 2 that is provided with tapped hole 1;
Described rotational structure also is provided with: elasticity internal gasket 4, described elasticity internal gasket 4 nested being arranged on the described rotatingshaft 3;
Described rotational structure also comprises friction top 7, and described friction top 7 is provided with the suitable screw thread that screws in described tapped hole 1, and the bottom of described friction top 7 has the gap that is suitable for described friction top 7 screw-ins with described tapped hole 1 bottom;
Be provided with pad 6 outside the elasticity between described friction top 7 and described elasticity internal gasket 4, the inboard of described friction top has the groove 15 that holds the outer pad of described elasticity.The surface of contact compression fit of outer pad 6 of described elasticity and described elasticity internal gasket 4, the outer pad of described elasticity is the pitch cone that matches with the surface of contact of described elasticity internal gasket, described pitch cone is expanded gradually along the direction that described friction top screws in described tapped hole, and the angle of described surface of contact and described horizontal plane is 45 °.
Rotational structure described in the present embodiment also is provided with a mounting hole 16 along the screw-in direction of described friction top on the described support, the internal diameter of described axle mounting hole 16 and the external diameter of described rotatingshaft 3 are suitable.
Between the inwall of axle mounting hole 16 and described rotatingshaft, be provided with radially swelling part.Described radially swelling part 8 is made up of interior swelling part 10 and outer swelling part 9, and the surface of contact of described interior swelling part 10 and outer swelling part 9 is the inclined-plane.(as shown in Figure 3)
The top of the friction top 7 in the present embodiment extends upward and forms bare terminal ends 13 outstanding and described support 2 tops.
The using method of the rotational structure in the present embodiment is:
With described friction top 7 by being threaded in the described support 2, squeezing action by elasticity internal gasket 4 in the friction top 7 and the outer pad 6 of elasticity, on radial and axial direction, carry out fastening to described rotatingshaft 3, further prevent the eccentric phenomena of described rotatingshaft 3 simultaneously by the squeezing action of two other pad, outside long-term use causes described elasticity internal gasket 4 and described elasticity between the pad 6 or described elasticity internal gasket 4 and described rotatingshaft 3 produce the gap because of wearing and tearing the time, can select to tighten clockwise or counterclockwise described friction top 7 according to the direction of screw thread on described friction top 7 outer walls, described friction top 7 is threaded into along described, drive the outer pad 6 of described elasticity simultaneously and move down described elasticity internal gasket 4 is pushed, eliminate gap radially.
Wear-resisting rotational structure in the present embodiment is with embodiment 2 difference that as shown in Figure 4 the surface of contact of the outer pad of internal gasket of elasticity described in the present embodiment and described elasticity and the angle of described horizontal plane are 65 °.
Be provided with protective cover 14 around described bare terminal end 13 in the present embodiment, described protective cover 14 is threaded with described bare terminal end 13, and the lower surface of described protective cover 14 and described support 2 are conflicted and be provided with; Form 2 seal grooves 11 on the rotatingshaft 3 of rotational structure described in the present embodiment in described axle mounting hole 16, in described seal groove 11, be provided with O type circle 12.
In addition, the outer pad of internal gasket of elasticity described in the present embodiment and described elasticity is the body of non-closure, and the indentation, there gap of the body of described non-closure is 0.5mm, and as selectable mode of execution, described indentation, there gap also can be selected to be arranged between the 0.5-2mm.
The using method of the rotational structure in the present embodiment is:
With described friction top 7 by being threaded in the described support 2; and with described protective cover 19 by being screwed on the described friction top 7; squeezing action by the outer pad 6 of rubber-like elasticity internal gasket 4 and elasticity in the friction top 7; on radial and axial direction, carry out fastening to described rotatingshaft 3; further prevent the eccentric phenomena of described rotatingshaft 3 simultaneously by the squeezing action of two other pad; outside long-term use causes described elasticity internal gasket and described elasticity between the pad 6 or described elasticity internal gasket 4 and described rotatingshaft 3 produce the gap because of wearing and tearing the time; can unload described protective cover; select to tighten clockwise or counterclockwise described friction top 7 according to the direction of screw thread on described friction top 7 outer walls again; described friction top 7 is threaded into along described; drive the outer pad 6 of described elasticity simultaneously and move down described elasticity internal gasket 4 is pushed, eliminate gap radially.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are in the protection domain of the invention.
Claims (10)
1. wear-resisting rotational structure comprises:
Be provided with the support of tapped hole;
Rotatingshaft, described rotatingshaft are arranged in the described support;
It is characterized in that described rotational structure also is provided with:
The elasticity internal gasket, described elasticity internal gasket is nested to be arranged on the described rotatingshaft;
Limit stoper is around being arranged on the described rotatingshaft and inconsistent with the bottom of described elasticity internal gasket;
Described rotational structure also comprises friction top, and described friction top is provided with the suitable screw thread that screws in described tapped hole, and the bottom of described friction top has the gap that is suitable for described friction top screw-in with described tapped hole bottom;
Between described friction top and described elasticity internal gasket, be provided with pad outside the elasticity, the surface of contact compression fit of outer pad of described elasticity and described elasticity internal gasket, described surface of contact is expanded gradually along the direction that described friction top screws in described tapped hole.
2. rotational structure according to claim 1 is characterized in that, along the screw-in direction of described friction top, also is provided with a mounting hole on the described support, and the internal diameter of described axle mounting hole and the external diameter of described rotatingshaft are suitable.
3. rotational structure according to claim 2 is characterized in that, the inboard of described friction top has the groove that holds the outer pad of described elasticity.
4. wear-resisting rotational structure according to claim 1 and 2 is characterized in that, is provided with radially swelling part between the inwall of axle mounting hole and described rotatingshaft.
5. wear-resisting rotational structure according to claim 4 is characterized in that, described radially swelling part is made up of interior swelling part and outer swelling part, and the surface of contact of described interior swelling part and outer swelling part is the inclined-plane.
6. according to claim 2 or 4 or 5 described wear-resisting rotational structures, it is characterized in that, form at least one seal groove on the rotatingshaft in described axle mounting hole, O type circle is set in described seal groove.
7. wear-resisting rotational structure according to claim 1 is characterized in that, described friction top top extends upward and forms the bare terminal end that protrudes in described support top;
Be provided with protective cover around described bare terminal end, described protective cover is threaded with described bare terminal end, and the lower surface of described protective cover and described support are conflicted and be provided with.
8. according to the arbitrary described wear-resisting rotational structure of claim 1-7, it is characterized in that the angle of described surface of contact and described horizontal plane is 45 °-65 °.
9. wear-resisting rotational structure according to claim 1 is characterized in that, the outer pad of described elasticity is the pitch cone that matches with the surface of contact of described elasticity internal gasket, and described pitch cone is expanded gradually along the direction that described friction top screws in described tapped hole.
10. wear-resisting rotational structure according to claim 9 is characterized in that, the outer pad of described elasticity internal gasket and described elasticity is the body of non-closure, and the indentation, there gap of the body of described non-closure is 0.5-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101881629A CN102230503A (en) | 2011-07-06 | 2011-07-06 | Abrasion-proof rotation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101881629A CN102230503A (en) | 2011-07-06 | 2011-07-06 | Abrasion-proof rotation structure |
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| CN102230503A true CN102230503A (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101881629A Pending CN102230503A (en) | 2011-07-06 | 2011-07-06 | Abrasion-proof rotation structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840675A (en) * | 2016-04-29 | 2016-08-10 | 苏州鼎隆精密机械制造有限公司 | Shaft sleeve and fastening ring positioning assembly |
| CN105840666A (en) * | 2016-04-29 | 2016-08-10 | 苏州鼎隆精密机械制造有限公司 | Looseness preventing component for shaft sleeve fastening ring |
| CN105840671A (en) * | 2016-04-29 | 2016-08-10 | 苏州鼎隆精密机械制造有限公司 | Connecting and fixing assembly for shaft sleeves |
| CN110549300A (en) * | 2019-07-26 | 2019-12-10 | 深圳供电局有限公司 | electric rotary operating tool |
| CN111547216A (en) * | 2020-04-09 | 2020-08-18 | 武汉船用机械有限责任公司 | Nacelle propeller and method for mounting stator of propulsion motor thereof |
| CN113315886A (en) * | 2020-02-26 | 2021-08-27 | 杭州海康威视数字技术股份有限公司 | Video camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2080608U (en) * | 1991-01-15 | 1991-07-10 | 朱永楣 | Joint arrangement |
| CN2376567Y (en) * | 1999-04-30 | 2000-05-03 | 青岛塑料模具实业公司 | Quick joint for hose |
| CN200946620Y (en) * | 2006-09-08 | 2007-09-12 | 中江金启通印刷机械有限公司 | Fixing and regulating device of eccentric axle |
| CN202158050U (en) * | 2011-07-06 | 2012-03-07 | 广州海鸥卫浴用品股份有限公司 | Wear-resistant rotating structure |
-
2011
- 2011-07-06 CN CN2011101881629A patent/CN102230503A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2080608U (en) * | 1991-01-15 | 1991-07-10 | 朱永楣 | Joint arrangement |
| CN2376567Y (en) * | 1999-04-30 | 2000-05-03 | 青岛塑料模具实业公司 | Quick joint for hose |
| CN200946620Y (en) * | 2006-09-08 | 2007-09-12 | 中江金启通印刷机械有限公司 | Fixing and regulating device of eccentric axle |
| CN202158050U (en) * | 2011-07-06 | 2012-03-07 | 广州海鸥卫浴用品股份有限公司 | Wear-resistant rotating structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840675A (en) * | 2016-04-29 | 2016-08-10 | 苏州鼎隆精密机械制造有限公司 | Shaft sleeve and fastening ring positioning assembly |
| CN105840666A (en) * | 2016-04-29 | 2016-08-10 | 苏州鼎隆精密机械制造有限公司 | Looseness preventing component for shaft sleeve fastening ring |
| CN105840671A (en) * | 2016-04-29 | 2016-08-10 | 苏州鼎隆精密机械制造有限公司 | Connecting and fixing assembly for shaft sleeves |
| CN110549300A (en) * | 2019-07-26 | 2019-12-10 | 深圳供电局有限公司 | electric rotary operating tool |
| CN113315886A (en) * | 2020-02-26 | 2021-08-27 | 杭州海康威视数字技术股份有限公司 | Video camera |
| CN111547216A (en) * | 2020-04-09 | 2020-08-18 | 武汉船用机械有限责任公司 | Nacelle propeller and method for mounting stator of propulsion motor thereof |
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Application publication date: 20111102 |