CN213052558U - Assembly structure of rolling roller and hollow shaft - Google Patents
Assembly structure of rolling roller and hollow shaft Download PDFInfo
- Publication number
- CN213052558U CN213052558U CN202021290440.2U CN202021290440U CN213052558U CN 213052558 U CN213052558 U CN 213052558U CN 202021290440 U CN202021290440 U CN 202021290440U CN 213052558 U CN213052558 U CN 213052558U
- Authority
- CN
- China
- Prior art keywords
- hole
- hollow shaft
- section
- rolling roller
- step hole
- 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
- Rolling Contact Bearings (AREA)
Abstract
An assembly structure of a rolling roller and a hollow shaft relates to an assembly structure, which comprises the rolling roller and the hollow shaft, wherein a central hole of the hollow shaft is composed of a first step hole, a second step hole and a long hole which are sequentially communicated, the first step hole is arranged in one side of the hollow shaft and is provided with a conical hole with a large outer end and a small inner end, the inner end of the first step hole is communicated with the second step hole, the diameter of the second step hole is smaller than that of the inner end of the first step hole, the long hole is arranged in the other side of the hollow shaft, the inner end of the long hole is communicated with the second step hole, the diameter of the long hole is smaller than that of the second step hole, a pull rod is arranged in the long hole, threads are arranged outside the outer end of the pull rod, and; one side of the rolling roller is arranged in a first step hole and a second step hole of the hollow shaft; the utility model discloses simple structure, change the convenience, improved production efficiency greatly.
Description
Technical Field
The utility model relates to an assembly structure especially relates to an assembly structure of roll-milling roller and hollow shaft.
Background
As is known, bearing forging belongs to hot working, the temperature of a blank is high, so that a die is quickly abraded and loses efficacy, the die is required to be replaced in time when losing efficacy, and the quality of a product is influenced. When a medium-large bearing forging with the outer diameter of more than 200mm is produced, a large rolling roller diameter and a large assembly area of the rolling roller and a hollow shaft are designed for ensuring a long service life of the rolling roller due to large products, after the rolling roller and the hollow shaft assembled by the rolling roller rotate relatively, the rolling roller and the hollow shaft assembled by the rolling roller are locked, when the rolling roller fails, the rolling roller is very difficult to disassemble, a hollow shaft module assembled with the rolling roller needs to be disassembled, a hydraulic jack is used for separating the rolling roller from the hollow shaft, the disassembling and the assembling need to be carried out within about half an hour, the bearing forging belongs to on-line operation, one device is shut down, the whole line is shut down, and the production efficiency is seriously influenced.
Disclosure of Invention
In order to overcome the deficiency in the background art, the utility model discloses an assembly structure of rolling roller and hollow shaft.
In order to realize the purpose, the utility model adopts the following technical scheme:
an assembly structure of a rolling roller and a hollow shaft comprises the rolling roller and the hollow shaft, wherein a central hole of the hollow shaft is composed of a first step hole, a second step hole and a long hole which are sequentially communicated, the first step hole is formed in one side of the hollow shaft and is set to be a conical hole with a large outer end and a small inner end, the inner end of the first step hole is communicated with the second step hole, the diameter of the second step hole is smaller than that of the inner end of the first step hole, the long hole is formed in the other side of the hollow shaft, the inner end of the long hole is communicated with the second step hole, the diameter of the long hole is smaller than that of the second step hole, a pull rod is arranged in the long hole, threads are arranged outside the outer end of the pull rod, and; one side of the rolling roller is arranged in a first step hole and a second step hole of the hollow shaft;
the middle part of the rolling roller is provided with a conical section, one side of the large-diameter section of the conical section is provided with a connecting shaft section A in an extending way, one side of the small-diameter section of the conical section is provided with a connecting shaft section B in an extending way, an inner hole is arranged in the connecting shaft section B, and the inner end section of the pull rod is a polished rod and is inserted in the inner hole; and a plane is arranged on the outer surface of the connecting shaft section B along the axial direction and is in clearance fit with the second step hole.
In the assembly structure of the rolling roller and the hollow shaft, the connecting shaft section A, the conical section and the connecting shaft section B of the rolling roller are coaxially arranged.
The cross section of the connecting shaft section B is the same as that of the second stepped hole in the assembling structure of the rolling roller and the hollow shaft.
In the assembly structure of the rolling roller and the hollow shaft, the taper A of the first step hole of the hollow shaft is 8-10 degrees, and the length L of the conical surface is 100-120 mm.
Since the technical scheme is used, the utility model discloses following beneficial effect has:
the utility model discloses an assembly structure of rolling roller and hollow shaft, through milling a plane at the position of rolling roller and hollow shaft assembly, and clearance fit, restrict both transition rotations, avoided unlimited rotation and the condition of locking to take place, the tapering A in hollow shaft 3 first step hole is 8-10, conical surface length L is 100-120 mm, increased both assembly area of contact, guarantee that the rolling roller can not appear the radial runout, avoided the rolling roller to have cracked risk; the utility model discloses simple structure, change the convenience, improved production efficiency greatly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the hollow shaft of the present invention;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is a schematic structural view of the rolling roller of the present invention;
FIG. 5 is a cross-sectional view of C-C of FIG. 4;
in the figure: 1. forging; 2. rolling a roller; 3. a hollow shaft; 4. a nut; 5. a pull rod; 6. a first stepped bore; 7. a second stepped bore; 8. a long hole; 9. connecting the shaft section A; 10. a tapered section; 11. connecting the shaft section B.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
The assembly structure of the rolling roller and the hollow shaft described with reference to the attached drawings 1-5 comprises a rolling roller 2 and a hollow shaft 3, a central hole of the hollow shaft 3 is composed of a first step hole 6, a second step hole 7 and a long hole 8 which are sequentially communicated, the first step hole 6 is arranged in one side of the hollow shaft 3 and is set to be a conical hole with a large outer end and a small inner end, the inner end of the first step hole 6 is communicated with the second step hole 7, the diameter of the second step hole 7 is smaller than that of the inner end of the first step hole 6, the long hole 8 is arranged in the other side of the hollow shaft 3, the inner end of the long hole 8 is communicated with the second step hole 7, the diameter of the long hole is smaller than that of the second step hole 7, a pull rod 5 is arranged in the long hole 8, threads are arranged outside the outer end of the pull rod 5; one side of the rolling roller 2 is arranged in a first step hole 6 and a second step hole 7 of the hollow shaft 3;
the middle part of the rolling roller 2 is provided with a conical section 10, one side of the large-diameter section of the conical section 10 is provided with a connecting shaft section A9 in an extending way, one side of the small-diameter section of the conical section 10 is provided with a connecting shaft section B11 in an extending way, an inner hole is arranged in the connecting shaft section B11, and the inner end section of the pull rod 5 is a polished rod and is inserted in the inner hole; the outer face of the connecting shaft section B11 is provided with a flat surface in the axial direction and is in clearance fit with the second stepped hole.
In the assembly structure of the rolling roller and the hollow shaft, the connecting shaft section A9, the conical section 10 and the connecting shaft section B11 of the rolling roller 2 are coaxially arranged.
In the assembly structure of the rolling roller and the hollow shaft, the cross section of the connecting shaft section B11 is the same as that of the second step hole 7.
In the assembly structure of the rolling roller and the hollow shaft, the taper A of the first step hole 6 of the hollow shaft 3 is 8-10 degrees, and the length L of the conical surface is 100-120 mm.
When the assembly structure of the rolling roller and the hollow shaft is implemented, the conical section 10 of the rolling roller 2 is installed in the hollow shaft 3 when the assembly structure is installed, the plane on the outer surface of the connecting shaft section B11 is matched with the plane of the inner hole of the second step in the hollow shaft 3, the polished rod end of the pull rod 5 penetrates through the long hole 8 and is inserted into the inner hole of the conical section 10, the outer end of the pull rod 5 is locked through a nut, and the forge piece 1 is installed on the connecting shaft section A9 of the rolling roller 2 for processing; when the rolling roller is replaced, only the nut needs to be loosened, the small hammer strikes the pull rod 5 to separate the rolling roller 2 from the hollow shaft 3, the replacement time is shortened to 5 minutes from the previous half hour, and the production efficiency is greatly improved.
The part of the utility model not detailed is prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.
Claims (4)
1. The utility model provides an assembly structure of roll milling roller and hollow shaft, includes roll milling roller and hollow shaft, characterized by: the hollow shaft is provided with a central hole, a first stepped hole, a second stepped hole and a long hole, wherein the first stepped hole, the second stepped hole and the long hole are sequentially communicated, the first stepped hole is formed in one side of the hollow shaft and is arranged as a conical hole with a large outer end and a small inner end, the inner end of the first stepped hole is communicated with the second stepped hole, the diameter of the second stepped hole is smaller than that of the inner end of the first stepped hole, the long hole is formed in the other side of the hollow shaft, the inner end of the long hole is communicated with the second stepped hole and is smaller than that of the second stepped hole, a pull rod is arranged in the long hole, threads are arranged outside the outer end of the pull rod; one side of the rolling roller is arranged in a first step hole and a second step hole of the hollow shaft;
the middle part of the rolling roller is provided with a conical section, one side of the large-diameter section of the conical section is provided with a connecting shaft section A in an extending way, one side of the small-diameter section of the conical section is provided with a connecting shaft section B in an extending way, an inner hole is arranged in the connecting shaft section B, and the inner end section of the pull rod is a polished rod and is inserted in the inner hole; and a plane is arranged on the outer surface of the connecting shaft section B along the axial direction and is in clearance fit with the second step hole.
2. The assembly structure of the rolling roller and the hollow shaft according to claim 1, wherein: the connecting shaft section A, the conical section and the connecting shaft section B of the rolling roller are coaxially arranged.
3. The assembly structure of the rolling roller and the hollow shaft according to claim 1, wherein: the cross section of the connecting shaft section B is the same as that of the second stepped hole.
4. The assembly structure of the rolling roller and the hollow shaft according to claim 1, wherein: the taper A of the first step hole of the hollow shaft is 8-10 degrees, and the length L of the conical surface is 100-120 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021290440.2U CN213052558U (en) | 2020-07-06 | 2020-07-06 | Assembly structure of rolling roller and hollow shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021290440.2U CN213052558U (en) | 2020-07-06 | 2020-07-06 | Assembly structure of rolling roller and hollow shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213052558U true CN213052558U (en) | 2021-04-27 |
Family
ID=75571391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021290440.2U Active CN213052558U (en) | 2020-07-06 | 2020-07-06 | Assembly structure of rolling roller and hollow shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213052558U (en) |
-
2020
- 2020-07-06 CN CN202021290440.2U patent/CN213052558U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106955960A (en) | Cold upsetting die of car and its processing technology | |
| CN101342603B (en) | Boring spindle support | |
| CN104001843A (en) | A cold rolling method for forming bearing rings | |
| CN213052558U (en) | Assembly structure of rolling roller and hollow shaft | |
| CN101786031A (en) | Split-type squeeze roller assembly structure and assembly method | |
| CN202991820U (en) | Transmission shaft applied to hydraulic pump | |
| CN104343832B (en) | Spacer and hub assembly | |
| CN105935855A (en) | Repairing method for end face tooth rolling roll shaft of novel three-roll planetary rolling mill | |
| CN203712372U (en) | Knife stopping mechanism of direct connection main shaft | |
| CN103212941A (en) | Hydraulic type external thread cold rolling device | |
| CN216343407U (en) | Split type gear ring bearing | |
| CN203248408U (en) | Impeller hub dismounting device | |
| CN202108858U (en) | Engineering machinery transmission shaft bond axis | |
| CN209856215U (en) | Lower holding type main shaft connecting structure of flat-die granulator | |
| CN215786462U (en) | Assembly structure of hollow shaft and core roller of vertical rolling mill | |
| CN206998792U (en) | A kind of biserial sphere self-aligning roller bearing Special tool for assembling | |
| CN104454753B (en) | Modified motor spindle component and its processing method | |
| CN213223763U (en) | Main transmission connecting shaft of rod and wire mill | |
| CN114542566B (en) | Taper sleeve and taper sleeve pin shaft assembly for coal mining machine | |
| CN210513887U (en) | Straight-falling type axle test device | |
| CN203991690U (en) | Guide and guard with axle are | |
| CN218427276U (en) | Progressive combined type rolling wheel die | |
| CN218760868U (en) | Shaft structure for compensating aperture | |
| CN210173303U (en) | Grinding brush wheel spindle | |
| CN207960513U (en) | A kind of sleeve type swivel stem |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |