CN214305144U - Chain wheel - Google Patents

Abstract

The utility model provides a sprocket belongs to mechanical drive sprocket technical field. It has solved the problem that current sprocket wearing and tearing and skid when assembling. This sprocket is including the sprocket main part that has the shaft hole, and the both ends face of sprocket main part all is provided with the outside arch of axial, and is the cavity setting, and with the bellying of the coaxial setting in shaft hole, the sprocket main part is located and is provided with rather than linking firmly mutually and be used for preventing the spacing dish that the rotation axis removed after the assembly on the terminal surface of one of them bellying, the middle part of spacing dish set up with the splined hole of the coaxial setting in shaft hole. The utility model has the advantages of reduce the assembly wearing and tearing and prevent to skid.

Description

Chain wheel

Technical Field

The utility model belongs to the technical field of mechanical drive sprocket, a sprocket is related to.

Background

The chain wheel is a mechanical element which is matched on a rotating shaft and transmits power by meshing and rotating with a chain, and is widely applied to mechanical transmission in the industries of chemical engineering, textile machinery, food processing, instruments, petroleum and the like.

When an existing chain wheel and a rotating shaft are installed, an accessory 'flat key' is required to be matched for use, the rotating shaft is prevented from moving after being installed on the chain wheel, the service life of the chain wheel and the service life of the rotating shaft are influenced, but when the flat key is installed on the rotating shaft, a groove for installing the flat key needs to be formed in the surface of the rotating shaft, the assembling efficiency of the rotating shaft and the chain wheel is influenced by the installation mode, and meanwhile, when the flat key is installed, the chain wheel and the rotating shaft are easily abraded.

Disclosure of Invention

The utility model aims at providing a prevent skidding and reduce the sprocket of assembly wearing and tearing after the assembly to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a sprocket, is including the sprocket main part that has the shaft hole, its characterized in that, the both ends face of sprocket main part all be provided with the outside arch of axial, and be the cavity setting, and with the bellying of the coaxial setting in shaft hole, the sprocket main part is located the terminal surface of one of them bellying and is provided with rather than linking firmly and being used for preventing the spacing dish that the rotation axis post-assembly removed mutually, the middle part of spacing dish set up with the splined hole of the coaxial setting in shaft hole.

In the above sprocket, the end face of the protruding portion is provided with a plurality of lightening holes which are arranged along the circumferential direction and used for reducing weight, the lightening holes are arranged in a triangular structure, the corner edges of the lightening holes are arranged in an arc shape, and the joint of the two crossed corner edges of the lightening holes is provided with a fillet.

In a foretell sprocket, spacing dish with the bellying links firmly mutually through a plurality of double-screw bolt, a plurality of the double-screw bolt is along spacing dish circumferencial direction interval distribution, and is located the outward flange department of spacing dish, a plurality of the double-screw bolt all runs through the bellying and wears into spacing dish, spacing dish be located all offer on the perisporium of corresponding double-screw bolt department and supply corresponding double-screw bolt to wear out and be convenient for spacing groove to the screw bolt, spacing dish be located all offer on the outward flange perisporium between two adjacent spacing grooves and to indent and be curved notch, spacing dish be located notch department and all be provided with rather than linking firmly and be used for the strengthening rib of joint strength mutually.

In the chain wheel, the end parts of the studs located at the corresponding limiting grooves are provided with locking caps which are in threaded connection with the studs and used for locking the limiting discs, and annular gaskets sleeved on the corresponding studs are arranged between the locking caps and the limiting discs.

In the above sprocket, the outer diameter of the limiting disc is a tapered cone.

Compared with the prior art, the chain wheel has the following advantages:

1. the end face of the sprocket main body, which is located on one of the protruding portions, is provided with a limiting disc which is fixedly connected with the end face of the protruding portion and used for preventing the rotating shaft from moving after being assembled, the middle of the limiting disc is provided with a spline hole which is coaxially arranged with the shaft hole, and the limiting disc is detachably arranged, so that the replacement cost of the limiting disc is low, the assembly abrasion is reduced during assembly, and the assembly is prevented from slipping after being assembled.

Drawings

Fig. 1 is a perspective view of the present sprocket.

In the figure, 1, shaft hole; 2. a sprocket body; 3. a boss portion; 4. a limiting disc; 5. a splined bore; 6. lightening holes; 7. a stud; 8. a limiting groove; 9. a notch opening; 10. reinforcing ribs; 11. a locking cap; 12. an annular gasket.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, the chain wheel comprises a chain wheel main body 2 with a shaft hole 1, the chain wheel main body 2 is processed by adopting a powder metallurgy scheme and is subjected to heat treatment to improve the product performance, two end faces of the chain wheel main body 2 are respectively provided with a bulge 3 which is axially outwards bulged and is arranged in a hollow manner and is coaxially arranged with the shaft hole 1, a limiting disc 4 which is fixedly connected with the end face of one bulge 3 and is used for preventing a rotating shaft from moving after being assembled is arranged on the end face of the chain wheel main body 2, the middle part of the limiting disc 4 is provided with a spline hole 5 which is coaxially arranged with the shaft hole 1, the limiting disc 4 is fixedly connected with the bulge 3 through a plurality of studs 7, the studs 7 are distributed at intervals along the circumferential direction of the limiting disc 4 and are arranged at the outer edge of the limiting disc 4, the studs 7 penetrate through the bulge 3 and into the limiting disc 4, and the lower end faces of the studs 7 are flush with the end face of the bulge 3, also can be less than the terminal surface of bellying 3, spacing dish 4 all sets up on being located the perisporium of corresponding double-screw bolt 7 department and supplies corresponding double-screw bolt 7 to wear out and be convenient for to the spacing groove 8 of double-screw bolt 7, spacing dish 4 all sets up on being located the outward flange perisporium between two adjacent spacing grooves 8 and inwards indent and be curved notch 9, spacing dish 4 is located notch 9 department and all is provided with rather than linking firmly mutually and being used for strengthening joint strength's strengthening rib 10.

In order to reduce the processing cost, a plurality of lightening holes 6 which are arranged along the circumferential direction of the end face of each lug boss 3 and are used for reducing the weight and penetrate through the chain wheel main body 2 and the two lug bosses 3 are formed in the end face of each lug boss 3, each lightening hole 6 is in a triangular structure, the corner edges of each lightening hole 6 are in arc arrangement, and the joints of the two crossed corner edges of each lightening hole 6 are provided with fillets.

In further detail, in order to facilitate maintenance and replacement and reduce replacement cost, the end of the stud 7 located at the corresponding limiting groove 8 is provided with a locking cap 11 which is in threaded connection with the end and is used for locking the limiting disc 4, and an annular gasket 12 which is sleeved on the corresponding stud 7 is arranged between the locking cap 11 and the limiting disc 4.

As preferred structure, the external diameter that spacing dish 4 is located between upper end and the lower extreme is the toper body that reduces gradually, and the external diameter of this toper body from top to bottom gradually increases gradually.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (5)

1. The utility model provides a sprocket, is including sprocket main part (2) that have shaft hole (1), its characterized in that, the both ends face of sprocket main part (2) all be provided with the outside arch of axial, and be the cavity setting, and with bellying (3) of shaft hole (1) coaxial setting, sprocket main part (2) are located the terminal surface that one of them bellying (3) on be provided with rather than linking firmly and being used for preventing spacing dish (4) that the rotation axis post-assembly removed mutually, the middle part of spacing dish (4) set up with splined hole (5) of shaft hole (1) coaxial setting.

2. The sprocket as claimed in claim 1, wherein the end faces of the protruding portions (3) are each provided with a plurality of lightening holes (6) arranged along the circumferential direction thereof for reducing the weight, the lightening holes (6) are arranged in a triangular structure, the corner edges of the lightening holes (6) are arranged in an arc shape, and the joints of the two intersecting corner edges of the lightening holes (6) are each provided with a fillet.

3. A sprocket wheel according to claim 1, wherein the limiting disc (4) is fixedly connected with the boss (3) through a plurality of studs (7), the plurality of studs (7) are distributed at intervals along the circumferential direction of the limiting disc (4), and is positioned at the outer edge of the limiting disc (4), a plurality of studs (7) all penetrate through the boss (3) and penetrate into the limiting disc (4), the peripheral wall of the limiting disc (4) at the position corresponding to the stud (7) is provided with a limiting groove (8) for the corresponding stud (7) to penetrate out and facilitate limiting the stud (7), the peripheral wall of the outer edge of the limiting disc (4) between two adjacent limiting grooves (8) is provided with an inward concave arc-shaped notch (9), the limiting disc (4) is positioned at the notch (9) and is provided with reinforcing ribs (10) which are fixedly connected with the limiting disc and used for reinforcing the connection strength.

4. A sprocket as claimed in claim 3, wherein the studs (7) are provided at the ends of the corresponding retaining grooves (8) with locking caps (11) which are threadedly connected to the retaining grooves and are used for locking the retaining discs (4), and annular spacers (12) are provided between the locking caps (11) and the retaining discs (4) and are fitted over the corresponding studs (7).

5. A sprocket as claimed in claim 1, wherein the limiting disc (4) has a tapered outer diameter.

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