CN211515729U

CN211515729U - Novel rotary wheel

Info

Publication number: CN211515729U
Application number: CN201922457927.9U
Authority: CN
Inventors: 周立成; 周立刚; 陈华伟; 崔继德
Original assignee: Zhumadian Hengjiu Machinery Manufacturing Co ltd
Current assignee: Henan Hengjiu Brake System Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-18
Anticipated expiration: 2029-12-30

Abstract

The utility model belongs to metal material handles the field device, concretely relates to novel revolve wheel, including U-shaped support, axle, revolve the wheel body, the axle passes through U-shaped support fixed stay, and it is fixed that lock nut is passed through to the outer end that the axle stretches out the U-shaped support, and the axle middle part is passed through the bearing and is connected the wheel body that revolves, it is spacing that the two-sided correspondence of the wheel body that revolves has set firmly the bearing pressure disk, the utility model provides a pair of novel revolve wheel, simple structure facilitates the use.

Description

Novel rotary wheel

Technical Field

The utility model belongs to metal material handles field device, concretely relates to novel revolve wheel.

Background

The spinning forming belongs to the special mode of metal plastic forming, the principle of the spinning forming is that a blank is fixed on a die, the die and the blank rotate at a high speed, a spinning wheel on the outer side applies great pressure to the blank, so that the metal blank is deformed, and finally a part with the same shape as the die is formed. The spinning technology can solve the major bottleneck problem which restricts the manufacturing industry and the military industry in China; embodies the combination of military and civilian and the combination of military and civilian, and has great strategic significance for guaranteeing the national security and enhancing the comprehensive national strength. With the development of national economy and military industry in China, the spinning forming is more and more widely applied and plays an important role. When the steel shell on the outer layer of the bimetal composite material brake drum is produced, the spinning wheel is easy to wear in the process of spinning the steel plate into the steel shell. The spinning roller is required to have high hardness and good wear resistance, a large amount of heat is generated in the spinning process, the temperature of the spinning roller is high, and the spinning roller is required to have certain red hardness, namely, the hardness and the wear resistance of the spinning roller are not degraded under the condition of high temperature. In the structure, the spinning wheel is arranged on a shaft, the shaft is arranged in a spinning wheel chamber, two bearings are supported in the spinning wheel chamber, the spinning wheel chamber is hung down by a traveling crane when the spinning wheel is replaced every time, the shaft is disassembled, the spinning wheel can be replaced, the spinning wheel is replaced every time for at least four hours, and the shaft in the structure is used as a cantilever beam, and the two bearings support the external stress, so that the shaft is easy to break.

Disclosure of Invention

An object of the utility model is to overcome the not enough of prior art, provide a novel spinning wheel, the structure is simpler, facilitates the use.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a novel spinning wheel, includes U-shaped support, axle, spinning wheel body, the axle passes through U-shaped support fixed stay, and the outer end that the axle stretches out the U-shaped support is fixed through lock nut, and the axle middle part is passed through the bearing and is connected the spinning wheel body, it is spacing that the two sides correspondence of spinning wheel body has set firmly the bearing pressure disk.

Furthermore, the spinning roller body is provided with 2 working faces, and the outer contour of the vertical section of the working face of the spinning roller body is M-shaped.

Further, the quantity of bearing is 2, sets up respectively at the both ends of spinning wheel body and axle junction, leaves the space between 2 bearings.

Further, the spinning wheel body is made of high-chromium cast iron, the trademark is KmTBCr28, and the chemical composition range is as follows: 2.0-3.3%, Si: less than or equal to 1.5 percent of Mn: less than or equal to 2.0 percent, Ni: less than or equal to 2.5 percent, Cr: 28-29%, Mo: less than or equal to 3.0 percent, Cu: less than or equal to 1.2 percent of P: less than or equal to 0.1 percent, S: less than or equal to 0.06 percent.

The utility model has the advantages that:

1. the utility model discloses change the working face of wheel among the prior art into the M type by simple A type, A type working face revolves the wheel and only has a working face, and wearing and tearing exceed the limit value, just scrapped, and M type working face revolves the wheel has two working faces, has worn and torn one, changes 180 installations, still can continue work, and a life-span of revolving the wheel has been prolonged, is the twice of A type, and the cost has just reduced.

2. The epaxial is installed to the spinning wheel among the prior art, and the axle is installed to spinning wheel room, and it has two bearings to support to spin wheel indoor, the utility model discloses saved spinning wheel room, directly can with a fixed bolster, the structure is retrencied, reduction in production cost.

3. The spinning wheel among the prior art has spinning wheel room, changes the spinning wheel at every turn, need hang down spinning wheel room with the driving a vehicle, unpacks the axle apart, just can change the spinning wheel, changes the spinning wheel at every turn and needs four hours at least, the utility model discloses directly can change on the spinning machine can, easy operation, 1-2 hours both can accomplish to change the spinning wheel.

4. The axle of rotatory wheel is equivalent to a cantilever beam among the prior art, and two bearings support outer atress, and the axle is easy disconnected, and the utility model discloses a U type support is equivalent to simple beam, and two bearings support between the atress, the atress is more reasonable, and the axle is difficult for disconnected.

5. Among the prior art spinning wheel weight is big, the utility model discloses well spinning wheel's centre is equipped with the bearing, has the space in addition between the bearing, has alleviateed spinning wheel's weight, has saved the material cost.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view of the spinning roller body of the present invention;

FIG. 4 is a schematic view of the overall structure of a prior art spinning wheel;

fig. 5 is a cross-sectional view of a prior art spinning wheel body.

Detailed Description

The technical solution of the present invention is described in detail with reference to the following specific embodiments, but the present invention is not limited thereto.

The utility model provides a novel spinning wheel, as shown in fig. 1-3, includes U-shaped support 1, axle 2, spinning wheel body 3, axle 2 passes through U-shaped support 3 fixed stay, and axle 2 stretches out the outer end of U-shaped support 3 and passes through lock nut 5 fixedly, and axle 2 middle part is passed through bearing 4 and is connected spinning wheel body 3, it is spacing that bearing pressure disk 6 has set firmly to correspond on two sides of spinning wheel body 3, and overall structure is simple and convenient, has saved huge spinning wheel room, directly installs two bearings in the spinning wheel, convenient dismantlement, reduction in production cost to easily the installation, directly can change the spinning wheel on the spinning machine, easy operation, 1-2 hours both can accomplish the change, and U type support 3 is equivalent to simply supported roof beam, and the atress between two bearings 4 supports, and the atress is more reasonable, and the axle is difficult for breaking.

The outer contour of the vertical section of the working surface 7 of the spinning wheel body 3 is M-shaped, namely, the spinning wheel structure with double working surfaces is adopted, when the abrasion of one working surface exceeds the limit, the spinning wheel is reversely installed, the other working surface is used, the spinning can be continuously performed, and the spinning wheel structure is equivalent to a brand-new spinning wheel, so that the service life of the spinning wheel is greatly prolonged. The number of the bearings 4 is 2, the bearings are respectively arranged at two ends of the joint of the spinning wheel body 3 and the shaft 2, and gaps are reserved between the 2 bearings 4, so that the weight of the spinning wheel is reduced, and the material cost is saved.

Structurally, as compared with the prior art, as shown in fig. 4-5, the spinning wheel a is mounted on the shaft d, the shaft d is mounted on the spinning wheel chamber b, two bearings e are arranged in the spinning wheel chamber b for supporting, the pressing cover c is mounted at the rear end of the spinning wheel chamber b, only one working surface of the spinning wheel a is worn out when the abrasion exceeds a limit value, the spinning wheel chamber is arranged, the spinning wheel can be replaced only when the spinning wheel chamber is replaced each time, the spinning wheel chamber is hung down by a crane, the shaft is disassembled, the spinning wheel can be replaced each time for at least four hours, the arranged shaft is used as a cantilever beam, the two bearings support external stress, and the shaft is easy to break.

When the concrete implementation, the material of the middle rotary wheel of the utility model is KmTBCr28 cast iron, and the chemical composition is as follows:

C：2.0-3.3%， Si：≤1.5%，Mn：≤2.0% ，Ni：≤2.5%，Cr：28-29%，Mo：≤3.0% ， Cu：≤1.2%，P：≤0.1%，S：≤0.06%；

softening the rotary wheel before machining, keeping the temperature at 920-960 ℃ for 1-8h, slowly cooling to 700-750 ℃, keeping the temperature for 4-8h, cooling to below 600 ℃, discharging and air cooling or furnace cooling; hardening treatment is needed after machining, heat preservation is carried out for 2-6h at the temperature of 980 ℃ after 920-; after hardening, because of the existence of large internal stress in the matrix, the stress relief treatment is needed, the temperature is kept for 2-3h at 200-300 ℃, and the product is discharged for air cooling or furnace cooling. The hardness of the finished spinning wheel should be above 60HRC to ensure that the working condition requirements are met.

During the processing, in order to optimize the performance of the spinning wheel material, the inventor researches the pretreatment of the spinning wheel machine, and tests show that when the chromium content exceeds 10%, M7C3 type carbide is formed, but not M3C type carbide formed by low chromium. However, the most important change is the formation of M7C3 type carbides surrounded by austenite or its transformation products at high chromium levels. The M7C3 type carbide in the high-chromium cast iron is in a rod shape or a block shape or a granular shape with discontinuous distribution, but not in a continuous matrix or a net shape in the common white cast iron; therefore, the high-chromium cast iron has high wear resistance and also has equivalent toughness. Another important variation is that the hardness (1500-1800 HV) of the M7C3 type carbide (i.e., (Cr, Fe) 7C 3) is higher than the hardness (1060-1240 HV) of the M3C type carbide (i.e., (Cr, Fe) 3C). In the test process, trace elements such as Mn, Si, Cu and the like are added. The hardenability of the matrix is improved, the crystal grains are refined, and the toughness of the material is improved.

In the test process, rare earth modification treatment is found to refine crystal grains, thereby effectively improving the mechanical property and the wear resistance. The metallographic structure after the rare earth modification treatment is mainly chromium austenite plus M7C3 eutectic carbide. The wear resistance of chromium austenite is improved as the degree of work hardening of the matrix and the content of eutectic carbides increase. In the spinning process, a machining hardening layer with enough depth is generated on the surface of the spinning wheel, so that the original 500-600 HV is increased to 900-1000 HV, and the machining hardening depth reaches 5 mm.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are illustrative and not exclusive in all respects. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The utility model provides a novel spinning wheel, its characterized in that, includes U-shaped support, axle, spinning wheel body, the axle passes through U-shaped support fixed stay, and the outer end that the axle stretches out the U-shaped support is fixed through lock nut, and the spinning wheel body is connected through the bearing in the middle part of the axle, it is spacing that the two sides correspondence of spinning wheel body has set firmly the bearing pressure disk.

2. The spinning wheel of claim 1 wherein said spinning wheel body has 2 working surfaces and the profile of the vertical cross-section of the spinning wheel body is M-shaped.

3. The novel spinning wheel as claimed in claim 1, wherein the number of the bearings is 2, the bearings are respectively arranged at two ends of the joint of the spinning wheel body and the shaft, and a gap is reserved between the 2 bearings.

4. A novel spinning wheel as claimed in any one of claims 1 to 3, characterized in that the spinning wheel body is made of high chromium cast iron and the designation is KmTBCr 28.