CN213530232U - Rectangular pyramid reel spindle structure - Google Patents
Rectangular pyramid reel spindle structure Download PDFInfo
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- CN213530232U CN213530232U CN202021983346.5U CN202021983346U CN213530232U CN 213530232 U CN213530232 U CN 213530232U CN 202021983346 U CN202021983346 U CN 202021983346U CN 213530232 U CN213530232 U CN 213530232U
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- main shaft
- pyramid
- sleeve
- spindle
- rectangular pyramid
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Abstract
The utility model relates to a rectangular pyramid reel main shaft structure belongs to steel rolling technical field, has solved current rectangular pyramid reel main shaft structural design unreasonable, have warp and make connecting bolt fracture problem. The rectangular pyramid winding drum main shaft structure is characterized in that a main shaft is of a cantilever structure, a clamping sleeve is arranged at the head of the main shaft and the outer supporting end, the clamping sleeve is in surface contact with the main shaft end and is in interference fit with the main shaft end, the opened part of the main shaft is clamped, the front end of the main shaft is prevented from being stressed and deformed, a connecting bolt between the main shaft and the outer supporting end is prevented from being stressed and broken, the maintenance frequency is reduced, and the production cost is reduced.
Description
Technical Field
The utility model relates to a steel rolling technical field especially relates to a rectangular pyramid reel main shaft structure for cold rolling strip.
Background
Uncoilers are important auxiliary equipment in the production of cold-rolled thin strip, and whether the uncoilers can work normally directly influences the quality and yield of the strip. The structural design of the winding drum is the most critical in the uncoiler.
The rectangular pyramid structure is a common structural form, and the main shaft and the outer support end of the traditional rectangular pyramid winding drum are of split structures and are fixedly installed through rabbets and connected through bolts. The stress of the outer support end is transferred to the main shaft spigot, the front end of the main shaft is in a free state, the front end is easy to deform and break, and the accident that the connecting bolt between the front end of the main shaft of the uncoiler and the outer support end breaks has occurred for many times in production practice.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the present invention aims to provide a rectangular pyramid winding drum main shaft structure for solving the problem that the connecting bolt is broken due to the unreasonable and deformation of the existing rectangular pyramid winding drum main shaft structure.
The purpose of the utility model is mainly realized through the following technical scheme:
a rectangular pyramid winding drum main shaft structure comprises a main shaft, an outer supporting end, a clamping sleeve, a stop block, a pull rod, a pyramid sleeve and a fan-shaped plate; the spindle is connected with the outer supporting end, the fan-shaped plate is contacted with the inclined plane of the pyramid sleeve, and the pyramid sleeve is connected with the pull rod through the stop block; the main shaft is of a cantilever structure, the front end of the main shaft is provided with a clamping sleeve, and the clamping sleeve is used for clamping the front end of the main shaft.
Furthermore, the cutting ferrule is in surface contact with the main shaft, and a center hole of the cutting ferrule is in interference fit with the front end of the main shaft.
Further, the axial length of the clamping sleeve is not greater than the length of the step at the front end of the main shaft.
Furthermore, the pull rod is connected with a piston rod of the hydraulic expansion and contraction cylinder through a connecting sleeve.
Furthermore, the pyramid sleeve is in clearance fit with the spindle.
Further, the number of the sector plates is 4.
Furthermore, a shaft sleeve in the central hole of the main shaft is in clearance fit with the pull rod.
Further, the main shaft is fixedly connected with the outer supporting end through a bolt.
Furthermore, the stop block is fixedly connected with the pull rod through a nut.
Further, the stop block is fixedly connected with the pyramid sleeve through a bolt.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
(1) the utility model discloses increase the cutting ferrule at the easy fracture position of rectangular pyramid reel main shaft promptly at main shaft and outer support end junction, change the free form of main shaft front end into main shaft front end fastening and decide, avoid because main shaft free end takes place to warp with outer support end tang atress, lead to the bolt fracture problem of main shaft and outer support end junction, the utility model discloses simple structure is reliable, effectively prevents the bolt fracture of main shaft and outer support end junction.
(2) The utility model discloses increased the cutting ferrule, reduced the maintenance number of times, avoided the bolt not hard up and fracture, effectively avoided improving production efficiency, reduction in production cost because of the shut down maintenance that the bolt fracture problem leads to.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
Fig. 1 is a schematic structural diagram of the rectangular pyramid winding drum of the present invention.
Fig. 2 is an enlarged schematic view of the mounting position of the rectangular pyramid reel cutting sleeve of the present invention.
Reference numerals:
1-main shaft, 2-outer supporting end, 3-cutting sleeve, 4-stop block, 5-pull rod, 6-pyramid sleeve and 7-sector plate.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of the invention, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit the scope of the invention.
The utility model discloses a concrete embodiment discloses a rectangular pyramid reel main shaft structure, as shown in fig. 1-2, avoids the main shaft front end to lead to the connecting bolt atress fracture between main shaft and the outer support end because of the atress warp. The rectangular pyramid winding drum main shaft structure comprises a main shaft 1, an outer supporting end 2, a clamping sleeve 3, a stop block 4, a pull rod 5, a pyramid sleeve 6 and a sector plate 7. The front end of the main shaft 1 is provided with a clamping sleeve 3, a step is arranged between the clamping sleeve 3 and the main shaft 1, and the step is used for axial positioning. The cutting sleeve 3 is vertically positioned with the mounting plane of the outer support end 2, and the main shaft 1 and the outer support end 2 are mounted and matched through a rabbet and are connected and fixed by bolts. The stop block 4 is sleeved on the pull rod 5 and is fixedly connected with the pull rod 5 through a nut. The stop block 4 is fixedly connected with the pyramid sleeve 6 through a bolt, namely the pull rod 5 is relatively fixed with the stop block 4 and the pyramid sleeve 6, and when the pull rod 5 axially moves, the stop block 4 and the pyramid sleeve 6 are driven to axially move together. One side of the pyramid sleeve 6 is contacted with the surface of the main shaft 1 and moves axially along the surface of the main shaft 1 under the driving of the pull rod 5; the inclined plane of the other side of the pyramid sleeve 6 is contacted with the inclined planes of the four sector plates 7 to realize relative sliding. One end of a pull rod 5 is fixedly connected with the stop block 4 through a nut, the other end of the pull rod is connected with a piston rod of the hydraulic expansion and contraction cylinder through a connecting sleeve, the pull rod 5 is driven by the piston rod of the hydraulic expansion and contraction cylinder to jointly realize axial movement along with the piston rod of the hydraulic expansion and contraction cylinder, the pyramid sleeve 6 is driven to realize synchronous axial movement, the inclined plane of the sector plate 7 and the inclined plane of the pyramid sleeve 6 slide relatively, radial movement of the excircle of the sector plate 7 is realized, and the expansion and contraction function of the winding drum is realized.
Be equipped with cutting ferrule 3 on main shaft 1, cutting ferrule 3 is the ring structure, is interference fit between the centre bore of cutting ferrule 3 and the main shaft 1 front end, ensures that cutting ferrule 3 blocks on main shaft 1. The axial length of the cutting sleeve 3 is not more than the length of the step at the front end of the main shaft 1, so that the normal installation among the main shaft 1, the outer supporting end 2 and the cutting sleeve 3 is ensured. The clamping sleeve 3 is arranged at the front end of the main shaft 1, so that the free state of the front end of the main shaft 1 is changed into a fixed state, when the outer supporting end 2 is subjected to alternating stress, the relative movement of the spigot of the outer supporting end 2 in the main shaft 1 is reduced, the stress of the connecting bolt between the outer supporting end 2 and the main shaft 1 is stable, the connecting bolt between the main shaft and the outer supporting end is prevented from being broken due to stress deformation of the front end of the main shaft 1, and the maintenance cost and the maintenance time are reduced.
The stop block 4 is of a circular ring structure, and a hole of the stop block 4 is in clearance fit with the pull rod 5, so that the stop block 4 is connected with the pull rod 5. The edge of the stop block 4 is provided with a threaded hole, a bolt penetrates through the threaded hole to fixedly connect the stop block 4 with the pyramid sleeve 6, and the distance between the threaded hole and the stop block 4 is larger than the diameter of the main shaft, so that the normal installation among the stop block 4, the pyramid sleeve 6 and the main shaft 1 is ensured.
The pull rod 5 is a step shaft, one end of the pull rod is provided with threads and can be tightly connected with the stop block 4 through a nut, the other end of the pull rod is connected with a piston rod of the hydraulic expansion and contraction cylinder through a connecting sleeve, and the pull rod 5 is driven by the piston rod of the hydraulic expansion and contraction cylinder to move axially. When the pull rod 5 axially moves towards one side of the outer support end 2, the stop block 4 drives the inclined surface of the pyramid sleeve 6 and the inclined surface of the sector plate 7 to relatively slide, so that the radial distance between the sector plate 7 and the main shaft 1 is reduced, the sector plate 7 moves inwards, and the winding drum is contracted; when the pull rod 5 moves towards the other side, the stop block 4 drives the pyramid sleeve to push the sector plate 7 outwards, and the sector plate 7 moves outwards to realize the expansion of the winding drum.
The pyramid cover 6 is connected with the stop block 4 through a bolt, the pyramid cover and the main shaft 1 are in clearance fit, and the pyramid cover 6 can move axially along the main shaft 1. The inclined plane of the rectangular pyramid part of the pyramid sleeve 6 is matched with the inclined plane of the fan-shaped plate 7, so that the axial movement of the pyramid sleeve 6 can be converted into the radial movement of the fan-shaped plate 7, and the expansion and contraction functions of the winding drum are realized.
The number of the sector plates 7 is 4, and the sector plates are uniformly distributed around the circumference of the main shaft 1. The inclined plane of the sector plate 7 is attached to the inclined plane of the pyramid sleeve 6 and moves radially under the drive of the pyramid sleeve 6, so that the expansion and contraction functions of the winding drum are realized.
The main shaft 1 is a cantilever structure, one end of the main shaft is fixed at the outer supporting end 2 through a bolt, and the other end of the main shaft is fixed on a bearing seat. The shaft sleeve in the central hole of the main shaft 1 is in clearance fit with the pull rod 5, so that the pull rod 5 can move freely along the axial direction, and the main shaft 1 does not move in the working process.
When the winding drum normally works, a piston rod of the hydraulic expansion and contraction cylinder drives the pull rod 5 to move axially, the pull rod 5 drives the stop block 4 to move synchronously, and then the pyramid sleeve 6 is driven to move along the main shaft, the pyramid sleeve 6 slides in a manner that the inclined surface of the pyramid sleeve is matched with the inclined surface of the sector plate 7 by virtue of the pyramid structure of the pyramid sleeve, and the sector plate 7 moves radially, so that the expansion and contraction function of the winding drum is realized. In the working process of the winding drum, the outer supporting end 2 can be affected by an alternating stress to enable the front end of the main shaft 1 to deform, the clamping sleeve 3 is installed at the front end of the main shaft 1 (as shown in figure 2), the clamping sleeve 3 clamps the front end of the main shaft 1, the front end of the main shaft 1 is changed into a fixed state from a free state, relative movement of a seam allowance of the outer supporting end 2 in the main shaft 1 is reduced, further, a connecting bolt between the outer supporting end 2 and the main shaft 1 is reduced in shearing force and tends to be stable, the possibility of fracture of the connecting bolt is reduced, the risk of shutdown is avoided, and good economic benefits are achieved.
In addition, the main shaft 1, the sector plate 7 and the pull rod 5 are independently arranged and can be independently processed and replaced, and the axial movement is realized by the connection between the pull rod 5 and a piston rod of the hydraulic expansion and contraction cylinder. The split structure between the main shaft 1 and the pull rod 5 is convenient for timely maintenance and replacement of the pull rod 5, and has low cost, easier maintenance and better economic benefit.
Compared with the prior art, the technical scheme provided by the embodiment has at least one of the following technical effects:
1. the utility model discloses the cutting ferrule structure of setting up at the main shaft front end can effectively reduce the deformation that main shaft free end and outer support end tang atress take place, avoids main shaft and the cracked problem of outer support end connecting bolt, and simple structure is reliable, and the effect is obvious.
2. The utility model discloses main shaft and pull rod adoption components of a whole that can function independently structure own, the pull rod is changed simply conveniently, and cost of maintenance is low, and economic benefits is good.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A rectangular pyramid winding drum main shaft structure is characterized by comprising a main shaft (1), an outer supporting end (2), a clamping sleeve (3), a stop block (4), a pull rod (5), a pyramid sleeve (6) and a sector plate (7); the spindle (1) is connected with the outer supporting end (2), the fan-shaped plate (7) is in contact with the inclined surface of the pyramid sleeve (6), and the pyramid sleeve (6) is connected with the pull rod (5) through the stop block (4) by the pyramid sleeve (6); the spindle (1) is of a cantilever structure, a clamping sleeve (3) is arranged at the front end of the spindle (1), and the clamping sleeve (3) is used for clamping the front end of the spindle (1).
2. The rectangular pyramid reel spindle structure according to claim 1, characterized in that the cutting sleeve (3) is in surface contact with the spindle (1), and the central hole of the cutting sleeve (3) is in interference fit with the front end of the spindle (1).
3. The rectangular pyramid mandrel spindle structure of claim 1, characterized in that the axial length of the ferrule (3) is no greater than the length of the front end step of the spindle (1).
4. The rectangular pyramid mandrel structure of claim 1, characterized in that the tie rod (5) is connected with the piston rod of the hydraulic expansion cylinder through a coupling sleeve.
5. The rectangular pyramid reel spindle structure of claim 1, characterized in that the pyramid sleeve (6) and the spindle (1) are in clearance fit.
6. Quadrangular pyramid mandrel substructure according to claim 1, characterized in that the number of sector plates (7) is 4.
7. The rectangular pyramid reel spindle structure of claim 1, characterized in that the bushing in the central hole of the spindle (1) is in clearance fit with the tie rod (5).
8. The rectangular pyramid reel spindle structure according to claim 1, characterized in that the spindle (1) and the outer support end (2) are fixedly connected by means of bolts.
9. The rectangular pyramid mandrel structure of claim 1, wherein the stop (4) and the pull rod (5) are fixedly connected by a nut.
10. The rectangular pyramid mandrel structure of any one of claims 1 to 9, wherein the stop (4) is fixedly connected to the pyramid housing (6) by means of a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021983346.5U CN213530232U (en) | 2020-09-11 | 2020-09-11 | Rectangular pyramid reel spindle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021983346.5U CN213530232U (en) | 2020-09-11 | 2020-09-11 | Rectangular pyramid reel spindle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213530232U true CN213530232U (en) | 2021-06-25 |
Family
ID=76491831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021983346.5U Active CN213530232U (en) | 2020-09-11 | 2020-09-11 | Rectangular pyramid reel spindle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213530232U (en) |
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2020
- 2020-09-11 CN CN202021983346.5U patent/CN213530232U/en active Active
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