CN214305143U

CN214305143U - Sprocket convenient to assemble and replace

Info

Publication number: CN214305143U
Application number: CN202120494163.5U
Authority: CN
Inventors: 江洪; 江火平
Original assignee: Yuhuan Hongkun Machinery Co ltd
Current assignee: Yuhuan Hongkun Machinery Co ltd
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2021-09-28
Anticipated expiration: 2031-03-08

Abstract

The utility model provides a convenient sprocket is changed in assembly belongs to sprocket technical field. It has solved the problem that the replacement cost is high. This convenient sprocket is changed in assembly is provided with the ring gear who is connected and has the external tooth rather than dismantling mutually including the sprocket main part that has the shaft hole, the sprocket main part is located the shaft hole and is convenient for bear axial force or radial force, and is used for restricting sprocket main part position to the unit is revolved in the limit that the sprocket main part of being convenient for is rotatory, is provided with on the periphery wall of sprocket main part and links firmly and be convenient for ring gear loading and unloading to change with the sprocket main part mutually, be provided with between sprocket main part and the ring gear and link firmly and the ring gear of being convenient for ring gear loading and unloading change mutually. The utility model has the advantages of low replacement cost and long service life.

Description

Sprocket convenient to assemble and replace

Technical Field

The utility model belongs to the technical field of the sprocket, a convenient sprocket is changed in assembly 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. The sprocket is at long-time meshing transmission in-process, and the wearing and tearing that appear easily need be changed, and current sprocket generally sets up as an organic whole and forms, causes its change to need carry out whole change, and its replacement cost is high, and the sprocket generally bears radial force when the operation, nevertheless probably leads to needing to bear axial force because of other factors to lead to the damage of sprocket easily.

Disclosure of Invention

The utility model aims at providing a change cost is low and long service life's sprocket 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 convenient sprocket is changed in assembly, is including the sprocket main part that has the shaft hole, its characterized in that, the sprocket main part be located and be provided with in the shaft hole and be convenient for bear axial force or radial force, and be used for restricting sprocket main part position to the unit is revolved in the limit of the sprocket main part of being convenient for rotation, be provided with on the periphery wall of sprocket main part rather than dismantling the ring gear who is connected and have the external tooth mutually, be provided with between sprocket main part and the ring gear and link firmly and be convenient for the ring gear loading and unloading of ring gear change mutually with the sprocket main part and fill up.

In the above-mentioned sprocket convenient to assemble and replace, an end surface of the sprocket body is provided with an axially outward protrusion coaxially arranged with the sprocket body and also provided with an external tooth protrusion.

In the above sprocket convenient to assemble and replace, the rotation limiting unit comprises an installation shaft and a needle bearing, the installation shaft is connected with the sprocket main body through the needle bearing, the rotation of the sprocket main body is facilitated through the needle bearing, and the needle bearing comprises an inner ring, an outer ring, double-row needles, a retainer and a sealing gasket.

In the above-mentioned convenient sprocket is changed in assembly, the both ends of installation axle all stretch out outside the sprocket main part, the installation axle be located the perisporium of sprocket main part both sides on the cover be equipped with rather than linking firmly and strengthen the ring piece of protective effect mutually.

In the chain wheel convenient to assemble and replace, the ring piece is provided with a circle of concave ring path which is axially inwards sunken, and the ring piece is positioned on the concave ring path and is provided with a plurality of first through holes arranged along the circumferential direction.

In the chain wheel convenient to assemble and replace, the whole installation shaft is cylindrical and is divided into a first section, a second section, a third section, a fourth section and a fifth section which are coaxial, an outer chamfer is arranged at the end part of the third section facing the fourth section, a sealing ring is sleeved on the peripheral wall of the second section, and an external thread is arranged on the peripheral wall of the fifth section.

In the above-mentioned sprocket convenient to assemble and replace, the end of the mounting shaft protruding the boss is provided with a limit ring protruding radially outward and used for limiting the corresponding ring piece, the outer end face of the limit ring is provided with a mounting groove convenient for mounting the mounting shaft to be assembled and disassembled, and the limit ring is composed of a coaxial cylindrical part and a circular table part.

In foretell assembly change convenient sprocket, the both ends face of sprocket main part on all seted up the inside sunken recess of axial, the sprocket main part be located the recess tank bottom surface and seted up a plurality of through-hole two that sets up along its circumferencial direction.

In foretell assembly change convenient sprocket, the packing ring be made by the rubber vulcanization, the periphery wall of sprocket main part on be provided with the bulge loop portion in radial outside arch and the embedding packing ring, the periphery wall of packing ring on set up the semi-circular arc groove that a plurality of set up along its circumferencial direction, the ring tooth on lie in the internal perisporium of semi-circular arc groove department on be provided with rather than matched with arc protruding, the ring tooth lie in and be provided with the embedding portion in the corresponding packing ring of embedding on the internal perisporium between the two adjacent arc protruding.

Compared with the prior art, this assembly is changed convenient sprocket has following advantage:

1. the needle bearing is arranged to bear radial force and axial force, so that the service life is prolonged, the external teeth are detachable, the maintenance and replacement are convenient, and the replacement cost is low.

Drawings

FIG. 1 is a perspective view of the present sprocket assembly for easy replacement.

FIG. 2 is a cross-sectional structural schematic view of the present assembled easy to replace sprocket.

In the drawings, 1, a sprocket body; 2. a rotation limiting unit; 3. ring teeth; 4. a gasket; 5. a boss portion; 6. installing a shaft; 7. a needle bearing; 8. a ring sheet; 9. a concave circular path; 10. a first through hole; 11. a seal ring; 12. a limiting ring; 13. mounting grooves; 14. a groove; 15. a second through hole; 16. a convex ring part; 17. and an arc-shaped bulge.

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 figures 1 and 2, the chain wheel convenient for assembly and replacement comprises a chain wheel main body 1 with a shaft hole, wherein the chain wheel main body 1 is positioned in the shaft hole and is provided with a rotation limiting unit 2 which is convenient for bearing axial force or radial force and is used for limiting the position of the chain wheel main body 1 and facilitating the rotation of the chain wheel main body 1, the outer peripheral wall of the chain wheel main body 1 is provided with an annular tooth 3 which is detachably connected with the outer peripheral wall of the chain wheel main body 1 and is provided with an outer tooth, a gasket 4 which is fixedly connected with the chain wheel main body 1 and is convenient for the detachment and replacement of the annular tooth 3 ring is arranged between the chain wheel main body 1 and the annular tooth 3, the rotation limiting unit 2 consists of an installation shaft 6 and a needle bearing 7, the installation shaft 6 is connected with the chain wheel main body 1 through the needle bearing 7 and facilitates the rotation of the chain wheel main body 1 through the needle bearing 7, the needle bearing 7 consists of an inner ring, an outer ring, a double row, a retainer and a sealing gasket, and the installation shaft 6 is integrally cylindrical and is divided into a coaxial first section, The mounting structure comprises a second section, a third section, a fourth section and a fifth section, wherein an outer chamfer is formed in the end portion, facing the fourth section, of the third section, a sealing ring 11 is sleeved on the outer peripheral wall of the second section, an external thread is arranged on the outer peripheral wall of the fifth section, the diameter of the first section is the same as that of the third section, the diameter of the second section is smaller than that of the first section, the diameter of the second section is larger than that of the fourth section and that of the fifth section, the diameter of the fourth section is smaller than that of the fifth section, a limiting ring 12 which protrudes outwards in the radial direction and is used for limiting a corresponding ring piece 8 is arranged on the end portion, extending out of a protruding portion 5, of a mounting shaft 6, a gap is reserved between the other ring piece 8 and the end face of an outer ring, a mounting groove 13 which is convenient for mounting and dismounting of the shaft 6 is formed in the outer end face of the limiting ring 12, and the limiting ring 12 is composed of a coaxial cylindrical portion and a circular table portion.

Preferably, the sprocket body 1 is provided with an axially outwardly projecting boss on one end face, and is disposed coaxially therewith, and also carries an externally toothed projection 5.

Further saying, in order to make the safeguard effect better, the both ends of installation axle 6 all stretch out outside sprocket main part 1, and the one end that is close to bellying 5 stretches out outside bellying 5, and the cover is equipped with rather than linking firmly and strengthening the ring piece 8 of safeguard effect on the perisporium of sprocket main part 1 both sides to installation axle 6 is located.

As a preferable structure, a circle of concave ring channel 9 which is axially inwards sunken is arranged on the ring piece 8, and a plurality of through holes I10 which are arranged along the circumferential direction of the ring piece 8 are arranged on the concave ring channel 9.

As preferred structure, all seted up the inside sunken recess 14 of axial on the both ends face of sprocket main part 1, sprocket main part 1 is located and has seted up a plurality of through-hole two 15 that set up along its circumferencial direction on the recess 14 tank bottom surface.

Further saying, for the convenience of ring tooth 3's change, packing ring 4 is made by the rubber vulcanization, the periphery wall of sprocket main part 1 on be provided with radial outside protruding and the protruding ring portion 16 of embedding in the packing ring 4, the periphery wall of packing ring 4 on set up the semi-circular arc groove that a plurality of set up along its circumferencial direction, ring tooth 3 on be located the internal perisporium of semi-circular arc groove department on be provided with rather than matched with arc protruding 17, ring tooth 3 be located and be provided with the embedding portion of embedding in the corresponding packing ring 4 on the internal perisporium between the protruding 17 of double-phase adjacent arc, packing ring 4 accessible a plurality of double-screw bolt with ring tooth 3 links firmly mutually.

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

1. The utility model provides a convenient sprocket is changed in assembly, is including sprocket main part (1) that has the shaft hole, its characterized in that, sprocket main part (1) be located and be provided with in the shaft hole and be convenient for bear axial force or radial force, and be used for restricting sprocket main part (1) position to be convenient for sprocket main part (1) rotatory limit revolve unit (2), be provided with on the periphery wall of sprocket main part (1) rather than dismantle the ring gear (3) of being connected and having the external tooth mutually, be provided with between sprocket main part (1) and ring gear (3) and link firmly mutually and be convenient for ring gear (3) ring loading and unloading packing ring (4) of changing with sprocket main part (1).

2. A sprocket wheel with easy assembly and replacement as claimed in claim 1, wherein the sprocket wheel body (1) is provided with an axially outward projection on one end surface, coaxially arranged therewith, and also with an externally toothed projection (5).

3. The sprocket with convenient assembly and replacement as claimed in claim 1, wherein the rotation limiting unit (2) comprises a mounting shaft (6) and a needle bearing (7), the mounting shaft (6) is connected with the sprocket body (1) through the needle bearing (7) and facilitates the rotation of the sprocket body (1) through the needle bearing (7), and the needle bearing (7) comprises an inner ring, an outer ring, double rows of needles, a retainer and a sealing gasket.

4. The sprocket with convenient assembly and replacement as claimed in claim 3, wherein both ends of the mounting shaft (6) extend out of the sprocket body (1), and the circumferential walls of the mounting shaft (6) at both sides of the sprocket body (1) are sleeved with ring plates (8) which are fixedly connected with the circumferential walls and enhance the protection effect.

5. The sprocket with convenient assembly and replacement as claimed in claim 4, wherein the ring plate (8) is provided with a circle of concave ring tracks (9) which are axially inwards concave, and the ring plate (8) is provided with a plurality of first through holes (10) which are arranged along the circumferential direction of the concave ring tracks (9).

6. The sprocket with convenient assembly and replacement as claimed in claim 3, wherein the mounting shaft (6) is generally cylindrical and is divided into a first section, a second section, a third section, a fourth section and a fifth section which are coaxial, an outer chamfer is arranged at the end part of the third section facing the fourth section, a sealing ring (11) is sleeved on the outer peripheral wall of the second section, and an external thread is arranged on the outer peripheral wall of the fifth section.

7. The sprocket with convenient assembly and replacement as claimed in claim 5, wherein the end of the mounting shaft (6) extending out of the protruding portion (5) is provided with a limiting ring (12) protruding radially outwards and used for limiting the corresponding ring piece (8), the outer end surface of the limiting ring (12) is provided with a mounting groove (13) for facilitating the mounting and dismounting of the mounting shaft (6), and the limiting ring (12) is composed of a coaxial cylindrical portion and a circular table portion.

8. The chain wheel convenient to assemble and replace as claimed in claim 1, wherein both end faces of the chain wheel body (1) are provided with grooves (14) which are recessed inwards in the axial direction, and a plurality of second through holes (15) arranged along the circumferential direction of the chain wheel body (1) are formed in the bottom surface of each groove (14).

9. The sprocket with convenient assembly and replacement as claimed in claim 1, wherein the washer (4) is made of rubber through vulcanization, the outer peripheral wall of the sprocket body (1) is provided with a convex ring part (16) which protrudes radially outwards and is embedded into the washer (4), the outer peripheral wall of the washer (4) is provided with a plurality of semi-arc grooves arranged along the circumferential direction of the washer, the inner peripheral wall of the ring gear (3) at the semi-arc grooves is provided with arc protrusions (17) matched with the ring gear, and the inner peripheral wall of the ring gear (3) between two adjacent arc protrusions (17) is provided with an embedded part embedded into the corresponding washer (4).