Rolling cotton feeding seat for splitting machine
The design of the rolling cotton seat solves the problem of strips of linen stacking and tangling in traditional containers, achieving uniform winding and rapid separation of linen, thus improving production efficiency and convenience.
Patent Information
- Application Number
- CN202422917829.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Traditional box-shaped containers are prone to stacking and tangling when holding strips of flax produced by fiber opening machines, making them inconvenient to handle in subsequent processes.
A rolling cotton-feathering seat structure is adopted, which includes a bottom conveyor, a turntable, an annular plate seat, and a telescopic core tower. The turntable drives the telescopic core tower and the annular plate seat to rotate synchronously, so as to achieve uniform winding and separation of strip-shaped linen. The telescopic core tower is used to meet the requirements of uniform stacking and rapid separation.
It enables uniform winding and rapid separation of strip-shaped linen fibers, simplifies subsequent processes, and improves production efficiency and convenience.
Smart Images
Figure CN223879898U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of hemp production device, in particular to a kind of rolling cotton seat for fiber opening machine. BACKGROUND
[0002] Hemp is often used in the production and processing process Fiber opening machine is used to separate the fiber of hemp dry stem from the xylem and other non-fiber parts, and the fluffy hemp obtained by fiber opening machine processing is long fiber and short fiber. After separation and carding by fiber opening machine, the fluffy hemp in the form of conveying belt is transported out of the fiber opening machine, and the hemp fiber can be pressed into a wide strip shape for easy handling.
[0003] Traditional containers are usually box-shaped containers that contain the wide strip-shaped fluffy hemp produced by the fiber opening machine. However, the box-shaped structure often causes random stacking of the fluffy hemp in strip form, and the irregular winding of the strip-shaped fluffy hemp becomes a chaotic mass, which is not convenient for subsequent processes. INVENTION CONTENTS
[0004] The present application provides a kind of rolling cotton seat for fiber opening machine, to solve the technical problem of receiving and containing the strip-shaped fluffy hemp produced by the fiber opening machine.
[0005] The technical solution adopted by the utility model to solve the above technical problems is: a kind of rolling cotton seat for fiber opening machine, characterized by comprising:
[0006] The bottom seat is provided with a bearing groove in the upper part, and a pressure bearing is arranged in the bearing groove. The outer side of the bearing groove is provided with a hook ring.
[0007] The wheel turntable is rotatably connected to the bottom seat through the pressure bearing. The outer part of the wheel turntable is provided with a guard ring, and the inner side of the guard ring is provided with a convex ring. The convex ring of the guard ring is connected to the hook ring in a hooking and hooking gap.
[0008] The ring plate seat is arranged on the upper part of the wheel turntable, and the lower part of the ring plate seat is uniformly provided with a concave-convex groove.
[0009] The elastic hanging pin is symmetrically arranged in the ring plate seat in the form of sliding connection.
[0010] The telescopic core tower is connected to the wheel turntable in the form of threaded connection, and the telescopic core tower further comprises a tower column, a middle cone column, a top cone column, a elastic sheath and a lifting ring.
[0011] Preferably, the guard ring is connected to the outer circle of the wheel turntable by bolting, and the guard ring and the wheel turntable rotate synchronously.
[0012] Preferably, the inner side of the guard ring is sequentially provided with a sealing cotton ring and a bristle ring, the sealing cotton ring is connected with the bottom carrier, and the guard ring is sealingly connected between the sealing cotton ring and the bottom carrier.
[0013] Preferably, the bristle ring is arranged at the lower end of the guard ring and is adhesively connected, the bristles of the bristle ring are arranged on the outer end face of the sealing cotton ring, and the bristle ring rotates synchronously with the guard ring and the rotating disc.
[0014] Preferably, the inner side of the rotating disc is provided with a core guide joint, and the rotating disc is threadedly connected with the root tower column of the telescopic core tower through the core guide joint.
[0015] Preferably, the inner side of the core guide joint is provided with a guide arc segment, and the core guide joint forms a uniform transition with the inner hole of the root tower column through the guide arc segment.
[0016] Preferably, the root tower column, the middle cone column and the top cone column are conical cylinders with the same taper, the top cone column is arranged in the middle cone column, the middle cone column is arranged in the root tower column, the maximum diameter of the lower part of the middle cone column is greater than the minimum diameter of the upper end of the root tower column, and the minimum diameter of the upper part of the middle cone column is less than the maximum diameter of the lower end of the top cone column.
[0017] Preferably, the root tower column, the middle cone column and the top cone column are all provided with elastic sheaths made of rubber material with good elasticity, and the elastic sheaths are tightly sleeved and sealed at the gaps between the root tower column, the middle cone column and the top cone column.
[0018] Preferably, the ring plate seat is connected with the rotating disc in a concave-convex type, and the inner hole of the ring plate seat is gap-fitted with the root of the telescopic core tower.
[0019] Preferably, the elastic hanging pin is slidingly fitted with the ring plate seat, the outer side of the elastic hanging pin is provided with a pin ear, the inner side of the elastic hanging pin is provided with a tension spring at the end, and the elastic hanging pin is elastically connected with the ring plate seat through the tension spring.
[0020] The utility model discloses an advantageous effect is: the utility model discloses the wheel carousel can drive the telescopic core tower and the ring plate seat rotation synchronously, guarantee the ring plate seat can continuously place the strip-shaped flax that open -fibre machine produces, and when the strip-shaped flax accumulation is too high, can around the telescopic core tower even the winding type's stacking, the telescopic core tower can lengthen or shorten, satisfy even the stacking of the strip-shaped flax of stacking of practical application, simultaneously, the telescopic core tower is the cylinder of taper, after even the whole flax of the ring plate seat is wound, can separate with the telescopic core tower fast, guarantee through the ring plate seat can fast even the whole flax after winding is handled. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is the main view appearance schematic drawing of the utility model;
[0022] Figure 2 It is the main view structural schematic drawing of the utility model;
[0023] Figure 3 It is the main view appearance schematic drawing of the utility model; Figure 2 It is the structure schematic drawing of the A place of the utility model's partial enlargement;
[0024] Figure 4 It is the main view appearance schematic drawing of the ring plate seat of the utility model;
[0025] Figure 5 It is the main view appearance schematic drawing of the ring plate seat of the utility model; Figure 4
[0026] Figure 6 It is the schematic drawing of embodiment 1 of the utility model;
[0027] Figure 7 It is the schematic drawing of embodiment 2 of the utility model;
[0028] In the drawing: 1 bottom transport seat, 11 bearing groove, 12 pressure bearing, 13 hook ring, 14 lifting lug, 15 bottom foot, 2 wheel carousel, 21 guard ring, 211 convex ring, 212 sealing cotton ring, 213 brush ring, 22 core guide connector, 221 guide arc section, 3 ring plate seat, 31 concave-convex groove, 4 elastic hanging pin, 41 pin lug, 42 tension spring, 5 telescopic core tower, 51 tower column, 52 middle taper column, 53 top taper column, 54 elastic sheath, 55 lifting ring. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0030] As an example, as shown in Figure 1 , Figure 2 , Figure 3 The bottom carrier 1 can be made of metal material or non-metal material, preferably made of plastic material. The two sides of the bottom carrier 1 can be provided with lifting lugs 14. The lower part of the bottom carrier 1 can be provided with bottom feet 15. The lifting lugs 14 and the bottom feet 15 facilitate the lifting and placing of the bottom carrier 1. The upper part of the bottom carrier 1 can be provided with a bearing groove 11. The bearing groove 11 is turned on the bottom carrier 1 or is integrally formed with the bottom carrier 1. A pressure bearing 12 can be arranged in the bearing groove 11. A wheel rotating disc 2 is arranged on the bottom carrier 1. The wheel rotating disc 2 is rotatably connected to the bottom carrier 1 through the pressure bearing 12.
[0031] The bottom carrier 1 is provided with a hook ring 13, which is connected with the bottom carrier 1 by bolting or is integrally formed; the outer part of the wheel rotating disc 2 is provided with a guard ring 21, which can be two half annular sleeves and forms a circular sleeve after being combined; the guard ring 21 can be connected with the wheel rotating disc 2 by bolting; the inner side of the guard ring 21 is provided with a convex ring 211, which can be integrally formed with the guard ring 21, and the convex ring 211 of the guard ring 21 is placed on the lower side of the flange of the hook ring 13, the convex ring 211 of the guard ring 21 and the hook ring 13 form a hook shape, and the convex ring 211 of the guard ring 21 and the hook ring 13 are gap fitted. The wheel rotating disc 2 can rotate on the bottom carrier 1 through the pressure bearing 12, and the guard ring 21 rotates synchronously with the wheel rotating disc 2; the gap fitting between the convex ring 211 of the guard ring 21 and the hook ring 13 can prevent the wheel rotating disc 2 from falling off the bottom carrier 1, ensure that the wheel rotating disc 2 is stably placed on the bottom carrier 1, and the wheel rotating disc 2 can also rotate on the bottom carrier 1. The inner side of the guard ring 21 is sequentially provided with a sealing cotton ring 212 and a bristle ring 213; the sealing cotton ring 212 is annular and is placed at the gap between the guard ring 21 and the bottom carrier 1, and is connected with the bottom carrier 1 by adhesive bonding or bolting; the guard ring 21 is connected with the bottom carrier 1 by the sealing cotton ring 212, preventing the wool and hemp in the workshop from entering the gap and affecting the normal rotation of the wheel rotating disc 2 on the bottom carrier 1; the bristle ring 213 is placed at the lower end of the guard ring 21 and is connected by adhesive bonding; the bristles of the bristle ring 213 are placed on the outer side end face of the sealing cotton ring 212; the bristle ring 213 rotates synchronously with the guard ring 21 and the wheel rotating disc 2; the bristle ring 213 not only prevents the wool and hemp in the workshop from entering the gap between the guard ring 21 and the bottom carrier 1, but also cleans the exposed surface of the sealing cotton ring 212, ensuring that the interior of the wheel rotating disc 2 is not invaded by wool and dust even after long-term use. Embodiment 1
[0032] As an example, as Figure 1 , Figure 2 , Figure 3 , Figure 6As shown, the telescopic core tower 5 includes a root tower column 51, a middle cone column 52, a top cone column 53, a spring sheath 54 and a lifting ring 55. The inner side center of the wheel carousel 2 is provided with a core guide connector 22, and the wheel carousel 2 is threadedly connected with the root tower column 51 of the telescopic core tower 5 through the core guide connector 22. The telescopic core tower 5 can rotate synchronously with the wheel carousel 2. The root tower column 51, the middle cone column 52 and the top cone column 53 are conical cylinders with the same taper, and the top cone column 53 and the middle cone column 52 are sequentially arranged in the root tower column 51. The maximum diameter of the lower part of the middle cone column 52 is greater than the minimum diameter of the upper end of the root tower column 51, and the minimum diameter of the upper part of the middle cone column 52 is less than the maximum diameter of the lower end of the top cone column 53. The root tower column 51 and the middle cone column 52 can be telescopically extended or retracted in the top cone column 53. Embodiment 2
[0033] On the basis of the above-mentioned embodiments, with reference to Figure 1 , Figure 2 , Figure 3 , Figure 7 As shown, the root tower column 51, the middle cone column 52 and the top cone column 53 are all provided with a spring sheath 54, the spring sheath 54 is made of rubber material with good telescopic property, and the spring sheath 54 is tightly sleeved and sealed at the gap between the root tower column 51 or the middle cone column 52 and the top cone column 53. When the root tower column 51 and the middle cone column 52 are both inside the top cone column 53, the root tower column 51 is sealed through the gap between the spring sheath 54 and the top cone column 53; when the middle cone column 52 is extended in the top cone column 53, the gap between the middle cone column 52 and the top cone column 53 is sealed by one spring sheath 54, and the gap between the root tower column 51 and the middle cone column 52 is sealed by another spring sheath 54; when the root tower column 51 and the middle cone column 52 are sequentially extended in the top cone column 53, the gaps between the root tower column 51, the middle cone column 52 and the top cone column 53 can all be manually tightly sleeved and sealed by multiple spring sheaths 54 to prevent the gap from entering the wool and affecting the subsequent use. The inner side upper end of the core guide connector 22 is provided with a guide arc segment 221, and the core guide connector 22 forms a uniform transition with the inner hole of the root tower column 51 through the guide arc segment 221, so that the middle cone column 52 in the root tower column 51 can be smoothly inserted into the root tower column 51 when retracted.
[0034] As an example, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the ring plate seat 3 is a ring-shaped plate, which can be placed on the upper part of the wheel carousel 2, and the lower part of the ring plate seat 3 is uniformly provided with a concave-convex groove 31; the ring plate seat 3 and the wheel carousel 2 are connected in a concave-convex manner, which ensures the synchronous rotation of the ring plate seat 3 and the wheel carousel 2, and the ring plate seat 3 and the wheel carousel 2 can also be locked in the form of a buckle; the inner hole of the ring plate seat 3 can be gap-fitted with the root of the telescopic core tower 5. The two sides of the ring plate seat 3 can also be provided with a spring hanging pin 4, which is placed in the ring plate seat 3 in a sliding connection manner, and the spring hanging pin 4 is slidingly connected with the ring plate seat 3; the outer side of the spring hanging pin 4 is provided with a fixedly connected pin ear 41, and the inner side of the spring hanging pin 4 is provided with a tension spring 42, and the spring hanging pin 4 is connected with the ring plate seat 3 through the tension spring 42; when the spring hanging pin 4 is manually pulled and the pin ear 41 is pulled out to rotate at an angle, the spring hanging pin 4 is more protruded from the ring plate seat 3 through the clamping of the pin ear 41, so that the ring plate seat 3 and the wheel carousel 2 can be synchronously rotated by the spring hanging pin 4. When the spring hanging pin 4 is rotated to align the pin ear 41 with the corresponding hole, the spring hanging pin 4 and the pin ear 41 are placed in the ring plate seat 3 under the pulling of the tension spring 42. The wheel carousel 2 can synchronously drive the telescopic core tower 5 and the ring plate seat 3 to rotate, which ensures that the ring plate seat 3 can continuously place the strip-shaped flax produced by the opening machine, and when the strip-shaped flax is stacked too high, it can be uniformly wound and stacked around the telescopic core tower 5, and the telescopic core tower 5 can be lengthened or shortened according to actual needs, meeting the needs of uniform stacking of the strip-shaped flax in actual application. The hoist in the room can lift the stacked flax through the lifting lugs of the spring hanging pins 4 on both sides of the ring plate seat 3, and when the ring plate seat 3 rises, the uniformly wound flax can be quickly separated from the tapered telescopic core tower 5, ensuring that the uniformly wound flax can be quickly transported by the ring plate seat 3.
[0035] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A rolling top-laying seat for a fiber opening machine, characterized by, The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
2. A rolling top-laying seat for an opening machine according to claim 1, characterized in that: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
3. A rolling top popper seat for an opener as defined in claim 2, wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
4. A rolling top popper seat for a fiber opener as defined in claim 3, wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
5. A rolling top popper seat for a fiber opener as defined in claim 1, wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
6. A rolling top popper for an opener as defined in claim 5, wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
7. A rolling top popper seat for a fiber opener as defined in claim 1, wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
8. A rolling top popper seat for a fiber opener as defined in claim 1, wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
9. A rolling top popper for an opener according to claim 1 wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing.
10. A rolling top popper seat for a fiber opener as defined in claim 1, wherein: The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating disc, ring plate seat, elastic hanging pin and telescopic core tower, which are connected by hooking and hooking, and the telescopic core tower is connected with the wheel rotating disc by screwing. The utility model relates to a kind of bottom carrier, wheel rotating