CN215720632U - Commercial car high accuracy gear - Google Patents

Abstract

The utility model relates to the technical field of high-precision gears, in particular to a high-precision gear of a commercial vehicle, which comprises a cast inner wheel and a gear body, wherein a shaft hole is formed in the cast inner wheel, a connecting shaft groove is fixedly installed at the top end of the shaft hole, three groups of hollows are arranged in the cast inner wheel on the outer wall of the shaft hole and annularly distributed in the cast inner wheel, two groups of connecting convex blocks are arranged on the outer wall of the cast inner wheel and are symmetrical to each other, the length of each connecting convex block is consistent with that of the cast inner wheel, and the gear body is arranged outside the cast inner wheel. According to the utility model, the cast inner wheel and the gear body are detachable, so that the gear body can be taken down and replaced when the gear teeth on the gear body are worn, the maintenance cost is reduced, the hollowing can dissipate heat generated by the gear during operation, the hardness of the gear is improved, the wear resistance is increased, the corrosion resistance function is enhanced, and the service life of the gear is prolonged.

Description

Commercial car high accuracy gear

Technical Field

The utility model relates to the technical field of high-precision gears, in particular to a high-precision gear of a commercial vehicle.

Background

The gear is a mechanical element with a rim provided with gears which are continuously engaged to transmit motion and power, the protruding parts on the gears are distributed in a radial shape, and the gears are contacted with each other to cause the continuous engagement operation of the gears.

The high-precision gear used at present mostly does not have an inner gear and an outer gear, can be disassembled, only needs to replace the outer gear during maintenance, reduces the maintenance cost, does not have a heat dissipation function, and has the characteristics of good wear resistance, corrosion resistance and high hardness with a gear main body.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-precision gear for a commercial vehicle, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a commercial vehicle high accuracy gear, includes wheel and gear body in the casting, the inside of wheel is provided with the shaft hole in the casting, the top fixed mounting in shaft hole has the connection axle groove, the inside three group fretworks that are provided with of wheel in the casting of shaft hole outer wall, three group's fretworks are the inside of cyclic annular distribution in the casting, the outer wall of wheel is provided with two sets of connection lugs in the casting, two sets of connection lugs are symmetrical each other, the length of connecting the lug is unanimous with the length of wheel in the casting, the outside of wheel is provided with gear body in the casting, gear body's internal diameter is the same with the internal diameter of wheel in the casting, gear body cover is in the casting.

Preferably, the outer wall of the gear body is provided with a plurality of groups of gear teeth, and the gear teeth are annularly distributed on the outer wall of the gear body at equal intervals.

Preferably, the inner wall of the gear body is provided with two groups of symmetrical connecting grooves, and the length of the connecting grooves is consistent with that of the gear body.

Preferably, the inner wall of the gear body is provided with two groups of symmetrical connecting grooves, and the length of the connecting grooves is consistent with that of the gear body.

Preferably, the inner wall of the cast inner wheel on one side of the connecting groove is provided with a threaded hole, and the fastening bolt extends to the inside of the gear body through the threaded hole.

Preferably, the structural layer of the gear body is provided with a hard chromium coating, the bottom of the hard chromium coating is provided with a polyurea wear-resistant coating, and the bottom of the polyurea wear-resistant coating is provided with a polyurethane anticorrosive coating.

Compared with the prior art, the utility model has the beneficial effects that:

1. this a commercial vehicle high accuracy gear, can dismantle between wheel and the gear body in the casting, when the teeth of a cogwheel on the gear body weares and teares, can take off the gear body and change, reduce cost of maintenance, need not change whole gear, through the inside that the staff will two sets of connection lugs embedding spread groove, install the junction of locking plate in the casting wheel and the gear body, fastening bolt passes the surface of locking plate, fixed connection between wheel and the gear body in the casting is accomplished to the inside of extending to the gear body through the screw hole, keep away from with this, can dismantle wheel and gear body in the casting, the gear of equipment completion, install the inside at the car through the cooperation of shaft hole with connecting the shaft groove, the fretwork can distribute away the heat that the gear produced when the function, realized need not to change the gear of wearing and tearing is whole, cost of maintenance has been practiced thrift greatly.

2. This commercial vehicle high accuracy gear, through setting up hard chromium coating, hard chromium coating's material has improved the wearability of the gear body greatly, it is poor to have avoided the wear-resisting effect of the gear body, short service life, through setting up polyurea wear-resistant coating, make no connecting wind in many large tracts of land all exist, and still a dustless coating, it is strong to have adhesive force, characteristics such as hardness is strong, through setting up polyurea wear-resistant coating, the corrosion resistance of the gear body has been improved, avoid easily oxidizing and rustting under the contact of air, influence the result of use, the improvement of the hardness of gear has been realized, the wearability increase, anticorrosive function has been strengthened, the life of gear has been improved.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic top cross-sectional view of the present invention;

FIG. 3 is a schematic top view of the cast inner wheel of the present invention;

FIG. 4 is a schematic top view of the gear body of the present invention;

FIG. 5 is a front view of the gear body of the present invention;

FIG. 6 is a schematic diagram of an internal structural layer of the gear body according to the present invention.

In the figure: 1. casting an inner wheel; 2. a gear body; 3. a shaft hole; 4. hollowing out; 5. a connecting shaft groove; 6. fastening a bolt; 7. a locking piece; 8. gear teeth; 9. a connection bump; 10. connecting grooves; 11. a threaded hole; 12. plating a hard chromium layer; 13. a polyurea wear-resistant coating; 14. a polyurethane anticorrosive layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-5, a technical solution provided by the present invention is:

a high-precision gear of a commercial vehicle comprises a casting inner wheel 1 and a gear body 2, wherein a shaft hole 3 is arranged inside the casting inner wheel 1, a connecting shaft slot 5 is fixedly arranged at the top end of the shaft hole 3, three groups of hollow parts 4 are arranged inside the casting inner wheel 1 on the outer wall of the shaft hole 3, the three groups of hollow parts 4 are annularly distributed inside the casting inner wheel 1, two groups of connecting convex blocks 9 are arranged on the outer wall of the casting inner wheel 1, the length of each connecting convex block 9 is consistent with the length of the casting inner wheel 1, the gear body 2 is arranged outside the casting inner wheel 1, the inner diameter of the gear body 2 is the same as the inner diameter of the casting inner wheel 1, the gear body 2 is sleeved on the casting inner wheel 1, a plurality of groups of gear teeth 8 are arranged on the outer wall of the gear body 2, the gear teeth 8 are annularly and equidistantly distributed on the outer wall of the gear body 2, two groups of mutually symmetrical connecting grooves 10 are arranged on the inner wall of the gear body 2, and the length of the connecting grooves 10 is consistent with the length of the gear body 2, a locking sheet 7 is arranged above each connecting groove 10, fastening bolts 6 are arranged on the outer walls of two sides of each locking sheet 7, a threaded hole 11 is formed in the inner wall of the casting inner wheel 1 on one side of each connecting groove 10, and each fastening bolt 6 extends into the gear body 2 through the corresponding threaded hole 11;

when in use, the cast inner wheel 1 and the gear body 2 can be disassembled, when the gear teeth 8 on the gear body 2 are worn, the gear body 2 can be taken down and replaced, the maintenance cost is reduced, the whole gear does not need to be replaced, the locking plate 7 is arranged at the joint of the casting inner wheel 1 and the gear body 2 by embedding two groups of connecting convex blocks 9 into the connecting grooves 10 by workers, the fastening bolt 6 penetrates through the surface of the locking plate 7, the fixed connection between the cast inner wheel 1 and the gear body 2 is completed by extending the threaded hole 11 to the inner part of the gear body 2, and meanwhile, far away from the gear body, the cast inner wheel 1 and the gear body 2 can be disassembled, the assembled gear is arranged in the automobile through the matching of the shaft hole 3 and the connecting shaft groove 5, the hollow-out part 4 can dissipate heat generated by the gear during operation, the worn gear is not required to be completely replaced, and the maintenance cost is greatly saved;

a hard chromium coating 12 is arranged on a structural layer inside the gear body 2, a polyurea wear-resistant coating 13 is arranged at the bottom end of the hard chromium coating 12, and a polyurethane anticorrosive coating 14 is arranged at the bottom end of the polyurea wear-resistant coating 13;

through setting up hard chromium coating 12, hard chromium coating 12's material has improved the wearability of gear body 2 greatly, it is poor to have avoided gear body 2 wear-resisting effect, short service life, through setting up polyurea wear-resistant coating 13, make no matter there is not the connecting wind by a large scale much, and still a dustless coating, have adhesive force strong, characteristics such as hardness is strong, through setting up polyurea wear-resistant coating 13, the corrosion resistance of gear body 2 has been improved, avoid easily oxidizing rust under the contact of air, influence the result of use, the improvement of the hardness of gear has been realized, the wearability increase, anticorrosive function has been strengthened, the life of gear has been improved.

When the commercial vehicle high-precision gear is used, the cast inner wheel 1 and the gear body 2 can be detached, when the gear teeth 8 on the gear body 2 are abraded, the gear body 2 can be taken down and replaced, the maintenance cost is reduced, the whole gear does not need to be replaced, two groups of connecting lugs 9 are embedded into the connecting grooves 10 by workers, the locking plate 7 is installed at the connecting position of the cast inner wheel 1 and the gear body 2, the fastening bolt 6 penetrates through the surface of the locking plate 7 and extends into the gear body 2 through the threaded hole 11 to complete the fixed connection between the cast inner wheel 1 and the gear body 2, the chromium layer is kept away from the connecting groove, the cast inner wheel 1 and the gear body 2 can be detached, the assembled gear is installed in the automobile through the matching of the shaft hole 3 and the connecting shaft groove 5, the hollow 4 can dissipate heat generated when the gear operates, and the hard plating 12 is arranged, the material of hard chromium coating 12 has improved the wearability of gear body 2 greatly, and it is poor to have avoided gear body 2 wear-resisting effect, and life is short, through setting up polyurea wear-resistant coating 13, makes no matter there is not the connecting wind by many large tracts of land, and still a dustless coating, has adhesive force reinforce, characteristics such as hardness is strong, through setting up polyurea wear-resistant coating 13, has improved gear body 2's corrosion resisting property, avoids easily oxidizing under the contact of air and rusts, influences the result of use.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a commercial car high accuracy gear which characterized in that: wheel (1) and gear body (2) in including the casting, the inside of wheel (1) is provided with shaft hole (3) in the casting, the top fixed mounting in shaft hole (3) has connecting shaft groove (5), wheel (1) inside is provided with three group fretworks (4) in the casting of shaft hole (3) outer wall, three group fretworks (4) are the inside of cyclic annular distribution wheel (1) in the casting, the outer wall of wheel (1) is provided with two sets of connection lug (9) in the casting, two sets of mutual symmetries of connection lug (9), the length of connecting lug (9) is unanimous with the length of wheel (1) in the casting, the outside of wheel (1) is provided with gear body (2) in the casting, the internal diameter of gear body (2) is the same with the internal diameter of wheel (1) in the casting, gear body (2) cover is in the casting on wheel (1).

2. A commercial vehicle high accuracy gear as defined in claim 1 wherein: the outer wall of gear body (2) is provided with multiunit teeth of a cogwheel (8), the teeth of a cogwheel (8) are cyclic annular equidistant distribution at the outer wall of gear body (2).

3. A commercial vehicle high accuracy gear as defined in claim 1 wherein: the inner wall of the gear body (2) is provided with two groups of mutually symmetrical connecting grooves (10), and the length of the connecting grooves (10) is consistent with that of the gear body (2).

4. A commercial vehicle high accuracy gear as defined in claim 3 wherein: the upper portion of the connecting groove (10) is provided with a locking sheet (7), and the outer walls of two sides of the locking sheet (7) are provided with fastening bolts (6).

5. A commercial vehicle high accuracy gear according to claim 4, wherein: the inner wall of the cast inner wheel (1) on one side of the connecting groove (10) is provided with a threaded hole (11), and the fastening bolt (6) extends to the inside of the gear body (2) through the threaded hole (11).

6. A commercial vehicle high accuracy gear as defined in claim 1 wherein: the gear body (2) inside structural layer is provided with hard chromium coating (12), the bottom of hard chromium coating (12) is provided with polyurea wear-resistant coating (13), the bottom of polyurea wear-resistant coating (13) is provided with polyurethane anticorrosive coating (14).

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