CN214007752U - Middle shaft for mounting double hubs - Google Patents
Middle shaft for mounting double hubs Download PDFInfo
- Publication number
- CN214007752U CN214007752U CN202022516196.3U CN202022516196U CN214007752U CN 214007752 U CN214007752 U CN 214007752U CN 202022516196 U CN202022516196 U CN 202022516196U CN 214007752 U CN214007752 U CN 214007752U
- Authority
- CN
- China
- Prior art keywords
- middle shaft
- expansion sleeve
- shaft body
- bottom wall
- bolt
- 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.)
- Active
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model discloses a middle shaft for installing double wheel hubs, which comprises a middle shaft body and expansion sleeves which are detachably arranged at two ends of the middle shaft body, wherein two ends of the middle shaft body are of frustum structures, and the diameters of the frustum structures are smaller when the middle shaft body is closer to the end part; the expansion sleeve is a cylindrical structure with an opening at one end, a first contraction joint is arranged on the side wall of the cylindrical structure, a through hole is arranged in the middle of the bottom wall of the cylindrical structure, a second contraction joint is arranged on the bottom wall along the radius, and the second contraction joint is communicated with the first contraction joint and the through hole; the inner cavity of the expansion sleeve is of a frustum-shaped inner cavity structure; the center position of the end part of the middle shaft is provided with a threaded hole, the expansion sleeve is sleeved at the end part of the middle shaft through a bolt, the end part of the bolt penetrates through the expansion sleeve to be connected with the threaded hole, and the head part of the bolt is pressed on the outer side of the bottom wall of the expansion sleeve. The utility model discloses convenient and fast when axis body both ends installation wheel hub.
Description
Technical Field
The utility model belongs to the technical field of wheel hub installs, especially, relate to a axis for installing double wheel hub.
Background
At present, the installation of a center shaft and a hub is mainly performed by key connection or interference fit installation, the key connection is not suitable for large-torque occasions, the interference fit installation needs to be performed by expansion with heat and contraction with cold and is not suitable for large-size hub installation occasions, and particularly when large-size hubs are simultaneously installed at two ends of the center shaft, the key connection and the interference fit installation are not very suitable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a axis for installing double wheel hub, convenient and fast when axis body both ends installation wheel hub.
In order to solve the technical problem, the utility model discloses a technical scheme is: a middle shaft for mounting a double hub comprises a middle shaft body and expansion sleeves which are detachably mounted at two ends of the middle shaft body, wherein two ends of the middle shaft body are of frustum structures, and the diameters of the frustum structures are smaller when the middle shaft body is closer to the end parts; the expansion sleeve is a cylindrical structure with an opening at one end, a first contraction joint is arranged on the side wall of the cylindrical structure, a through hole is arranged in the middle of the bottom wall of the cylindrical structure, a second contraction joint is arranged on the bottom wall along the radius, and the second contraction joint is communicated with the first contraction joint and the through hole; the inner cavity of the expansion sleeve is of a frustum-shaped inner cavity structure matched with the frustum structure; a threaded hole is formed in the center of the end part of the middle shaft, the expansion sleeve is sleeved on the end part of the middle shaft through a bolt, the end part of the bolt penetrates through the expansion sleeve to be connected with the threaded hole, and the head part of the bolt is pressed on the outer side of the bottom wall of the expansion sleeve; a gap exists between the inner side of the bottom wall of the expansion sleeve and the end face of the middle shaft, and the outer ring face of the side wall of the expansion sleeve and the outer ring face of the middle part of the middle shaft body are positioned on the same virtual cylinder ring face.
In the center shaft for mounting the double hubs, the diameter of the outer ring surface of the bottom wall is larger than that of the middle part of the center shaft body.
The gasket ring is arranged between the head of the bolt and the outer side of the bottom wall of the expansion sleeve.
Compared with the prior art, the utility model has the following advantage: the middle shaft of the utility model does not need to be connected by key or interference fit by using a mode of expansion with heat and contraction with cold when the wheel hub is installed; the expansion sleeve is detached during installation of the hub, the hub sleeve is arranged on the side wall of the expansion sleeve, then the expansion sleeve is arranged at the end of the center shaft body, the expansion sleeve is extruded to move towards the direction close to the middle part of the center shaft body by screwing the bolt, the diameter of the side wall of the expansion sleeve is increased under the action of the frustum structure in the moving process, the expansion hub is connected, and the hub installation is convenient and fast.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
1-bolt; 2-a shim ring; 3, expanding the sleeve;
4-middle shaft body.
Detailed Description
As shown in fig. 1, a center shaft for mounting a double hub comprises a center shaft body 4 and expansion sleeves 3 detachably mounted at two ends of the center shaft body 4, wherein two ends of the center shaft body 4 are of frustum structures, and the diameters of the frustum structures are smaller when the center shaft body is closer to the end parts; the expansion sleeve 3 is a cylindrical structure with an opening at one end, a first contraction joint is formed in the side wall of the cylindrical structure, a through hole is formed in the middle of the bottom wall of the cylindrical structure, a second contraction joint is formed in the bottom wall along the radius, and the second contraction joint is communicated with the first contraction joint and the through hole; the sleeve is easier to deform by arranging the first shrinkage joint and the second shrinkage joint; the inner cavity of the expansion sleeve 3 is a frustum-shaped inner cavity structure matched with the frustum structure; a threaded hole is formed in the center of the end part of the middle shaft, the expansion sleeve 3 is sleeved on the end part of the middle shaft through a bolt 1, the end part of the bolt 1 penetrates through the expansion sleeve 3 to be connected with the threaded hole, and the head part of the bolt 1 is pressed on the outer side of the bottom wall of the expansion sleeve 3; a gap exists between the inner side of the bottom wall of the expansion sleeve 3 and the end face of the middle shaft, and the outer ring face of the side wall of the expansion sleeve 3 and the outer ring face of the middle part of the middle shaft body 4 are positioned on the same virtual cylinder ring face.
The diameter of the bottom wall outer ring surface is larger than that of the middle part of the middle shaft body 4. In practical use, the part of the bottom wall outer ring surface of the expansion sleeve 3, which is more protruded than the middle part of the middle shaft body 4, is used for limiting the hub when the hub is installed, and the hub is prevented from flying out when rotating at high speed.
And a gasket ring 2 is arranged between the head of the bolt 1 and the outer side of the bottom wall of the expansion sleeve 3. By arranging the gasket ring 2, on one hand, the bolt 1 can be prevented from loosening, on the other hand, the deformation resistance of the bolt hole can be enhanced, and the pressure applied by the bolt 1 can be better transmitted to the side wall of the expansion sleeve 3.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (3)
1. A bottom bracket for mounting a dual hub, comprising: the middle shaft comprises a middle shaft body and expansion sleeves which are detachably arranged at two ends of the middle shaft body, wherein two ends of the middle shaft body are of frustum structures, and the diameters of the frustum structures are smaller when the middle shaft body is closer to the end parts; the expansion sleeve is a cylindrical structure with an opening at one end, a first contraction joint is arranged on the side wall of the cylindrical structure, a through hole is arranged in the middle of the bottom wall of the cylindrical structure, a second contraction joint is arranged on the bottom wall along the radius, and the second contraction joint is communicated with the first contraction joint and the through hole; the inner cavity of the expansion sleeve is of a frustum-shaped inner cavity structure matched with the frustum structure; a threaded hole is formed in the center of the end part of the middle shaft, the expansion sleeve is sleeved on the end part of the middle shaft through a bolt, the end part of the bolt penetrates through the expansion sleeve to be connected with the threaded hole, and the head part of the bolt is pressed on the outer side of the bottom wall of the expansion sleeve; a gap exists between the inner side of the bottom wall of the expansion sleeve and the end face of the middle shaft, and the outer ring face of the side wall of the expansion sleeve and the outer ring face of the middle part of the middle shaft body are positioned on the same virtual cylinder ring face.
2. A bottom bracket for mounting a dual hub as defined in claim 1, wherein: the diameter of the bottom wall outer ring surface is larger than that of the middle part of the center shaft body.
3. A bottom bracket for mounting a dual hub as defined in claim 1, wherein: and a gasket ring is arranged between the head of the bolt and the outer side of the bottom wall of the expansion sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022516196.3U CN214007752U (en) | 2020-11-04 | 2020-11-04 | Middle shaft for mounting double hubs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022516196.3U CN214007752U (en) | 2020-11-04 | 2020-11-04 | Middle shaft for mounting double hubs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214007752U true CN214007752U (en) | 2021-08-20 |
Family
ID=77303260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022516196.3U Active CN214007752U (en) | 2020-11-04 | 2020-11-04 | Middle shaft for mounting double hubs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214007752U (en) |
-
2020
- 2020-11-04 CN CN202022516196.3U patent/CN214007752U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201794939U (en) | Hydraulic coupling | |
| CN201106611Y (en) | Orientation combined tire nut | |
| CN214007752U (en) | Middle shaft for mounting double hubs | |
| CN213809303U (en) | Cooling water pipe joint convenient to install for vehicle | |
| CN203585701U (en) | Compounded pipe hydraulic expansion device | |
| CN113374960A (en) | Pipeline connecting structure with angle compensation | |
| CN102797763A (en) | Novel hydraulic expansion sleeve | |
| CN210979319U (en) | Liquid hydrogen vacuum heat insulation gas cylinder | |
| CN203184916U (en) | Rubber shaft sleeve press mounting device | |
| CN201284795Y (en) | Anti-loosening apparatus for torque transmission of segmenting shaft | |
| CN212776079U (en) | Steam rotary joint sealing device | |
| CN212354267U (en) | Bicycle aluminium shoulder convenient to installation | |
| CN2445174Y (en) | Expansion pipe joint | |
| CN202790169U (en) | Novel hydraulic expansion casing | |
| CN214523760U (en) | Brake pipe locking and connecting device for automobile | |
| CN207139221U (en) | A kind of semi-ring card key formula installation and positioning structure of hydraulic jack | |
| CN206383812U (en) | Clutch pedal arm and attachment structure, clutch steerable system and the vehicle of total pump tappet | |
| CN210634350U (en) | Semi-axis sleeve for automobile driving front axle assembly | |
| CN203297312U (en) | Hollow shaft of internal splines of high-load torque | |
| CN201121076Y (en) | Wire wheel apparatus for deploying and retracting wire on textile machine | |
| CN218325760U (en) | Good heat dissipation's wheel hub bearing | |
| CN219827544U (en) | Novel simulator piston rod | |
| CN209762058U (en) | Steering power-assisted oil cylinder of commercial vehicle | |
| CN219257604U (en) | Electric vehicle handle sleeve with anti-drop structure | |
| CN103244068A (en) | Pressing cap structure of hydraulic jar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |