CN215891001U

CN215891001U - High-strength wear-resistant gear

Info

Publication number: CN215891001U
Application number: CN202121460579.1U
Authority: CN
Inventors: 周新伟; 王纪美
Original assignee: Changzhou Aviation Gear Co ltd
Current assignee: Changzhou Aviation Gear Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-02-22
Anticipated expiration: 2031-06-29

Abstract

The utility model relates to a high-strength wear-resistant gear, which comprises a gear body, wherein a plurality of gear teeth are uniformly distributed on the outer peripheral surface of the gear body, a gear shaft hole is formed in the center of the gear body, the gear teeth are of a conical structure, the radius of one end, close to a gear shaft, of the gear teeth is larger, a plurality of axially penetrating positioning clamping grooves are uniformly distributed on the inner wall of the gear shaft hole, a plurality of positioning holes which are circumferentially distributed are formed in the plane, close to the gear shaft hole, of the gear body, a first reinforcing layer and a second reinforcing layer are arranged inside the gear body, the first reinforcing layer is arranged on one side close to the gear shaft hole, the second reinforcing layer is arranged on one side far away from the gear shaft hole, a connecting layer is clamped between the first reinforcing layer and the second reinforcing layer, a first wear-resistant layer is arranged on the outer surface of the gear body, upper round chamfers are arranged on two sides of tooth roots of the gear teeth, lower round chamfers are arranged on two sides of the gear teeth, the utility model increases the strength of the gear and has better wear resistance.

Description

High-strength wear-resistant gear

Technical Field

The utility model belongs to the technical field of gears, and particularly relates to a high-strength wear-resistant gear.

Background

The gear is widely applied to various machine manufacturing industries such as automobiles, tractors, machine tools, engineering machinery, mining machinery, metallurgical machinery, petroleum, instruments, airplanes and spacecrafts, the gear is provided with a mechanical element which can continuously mesh with teeth to transmit motion and power on a wheel rim, the gear is a toothed mechanical part which can mesh with each other, the gear is applied to transmission very early, and at the end of the 19 th century, the principle of generating a gear cutting method and the successive appearance of a special machine tool and a cutter which use the principle to cut the teeth are realized, and along with the development of production, the stability of gear operation is emphasized.

Application number is 202021332131.7 utility model discloses a high strength gear, including the gear body, a plurality of teeth of a cogwheel of outside fixedly connected with of gear body, the front end fixedly connected with of gear body and a plurality of teeth of a cogwheel corresponding front end gusset plate, the rear end fixedly connected with of gear body and a plurality of teeth of a cogwheel corresponding rear end gusset plate, the gear body, the mounting hole has all been seted up at the center of front end gusset plate and rear end gusset plate, a plurality of positioning channel sections corresponding with the mounting hole have all been seted up to the week side at gear body, front end gusset plate and rear end gusset plate center, the equal fixedly connected with in week side of front end gusset plate and rear end gusset plate is a plurality of interior hexagonal set screws that correspond with the gear body, this utility model discloses intensity is not enough and lack the wearability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-strength wear-resistant gear, which solves the problems of insufficient strength and lack of wear resistance in the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model comprises a gear body, a plurality of gear teeth are uniformly distributed on the peripheral surface of the gear body, a gear shaft hole is arranged in the center of the gear body, the gear teeth are in a conical structure, the radius of one end of the gear teeth close to the gear shaft hole is larger, a plurality of axially penetrating positioning clamping grooves which are uniformly distributed are arranged on the inner wall of the gear shaft hole, a plurality of positioning holes which are distributed circumferentially are arranged on the plane of the gear body close to the gear shaft, a first reinforcing layer and a second reinforcing layer are arranged inside the gear body, the first reinforcing layer is arranged on one side close to the gear shaft hole, the second reinforcing layer is arranged on one side far away from the gear shaft hole, a connecting layer is clamped between the first reinforcing layer and the second reinforcing layer, a first wear-resistant layer is arranged on the outer surface of the gear body, the gear teeth are characterized in that upper round chamfers are arranged on two sides of the tooth tops of the gear teeth, and lower round chamfers are arranged on two sides of the tooth roots of the gear teeth.

Furthermore, the first reinforcing layer is composed of a plurality of first reinforcing parts, the second reinforcing layer is composed of a plurality of second reinforcing parts, and the first reinforcing parts and the second reinforcing parts are uniformly distributed in the circumferential direction of the gear shaft hole.

Further, the first reinforcing members and the second reinforcing members are not on the same diameter line, and the first reinforcing members and the second reinforcing members are arranged in a staggered mode.

Further, the first reinforcing member includes a first reinforcing core and a first reinforcing layer, and the first reinforcing layer is disposed on both sides of the first reinforcing core.

Further, the second reinforcing member comprises a second reinforcing core and second reinforcing layers, and the second reinforcing layers are arranged on two sides of the second reinforcing core.

Furthermore, the outer surface of the gear teeth is provided with a wear-resistant layer.

Further, the wear-resistant layer is a carborundum wear-resistant layer.

Further, the radius of the upper round chamfer is the same as that of the lower round chamfer.

Further, the bending direction of the lower round chamfer faces the outer part of the gear tooth.

The utility model has the beneficial effects that:

1. the dual design of first enhancement layer and second enhancement layer has improved the intensity of gear, has guaranteed the intensity of reinforcement, on the basis of conveniently reducing the structure materials, increases structural rigidity, makes the joint stable.

2. The first wear-resistant layer greatly improves the wear resistance of the gear, the carborundum wear-resistant layer is sprayed on the outer part of the gear teeth, the wear resistance and corrosion resistance are excellent, the bonding strength with the metal surface is high, and the service life of the gear can be prolonged by 2.5 times.

3. The upper round chamfer and the lower round chamfer of the gear teeth can reduce stress concentration and noise in the gear meshing process, prolong the service life of the gear and improve transmission stability.

Drawings

The foregoing and other objects, features, and advantages of the utility model will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

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

FIG. 2 is a schematic view of a first reinforcement structure of the present invention;

FIG. 3 is a schematic view of a second reinforcement member of the present invention

FIG. 4 is a schematic illustration of a gear tooth configuration according to the present invention;

fig. 5 is a schematic structural diagram of embodiment 2 of the present invention.

Wherein: 1. a gear body; 2. a gear shaft hole; 3. positioning the clamping groove; 4. gear teeth; 401. a wear layer; 402. rounding and chamfering; 403. chamfering the lower circle; 5. positioning holes; 6. a first reinforcing layer; 601. a first reinforcement; 602. a first reinforcing core; 603. a first reinforcing layer; 7. a connecting layer; 8. a second reinforcing layer; 801. a second reinforcement; 802. a second reinforcing core; 803. a second reinforcing layer; 9. a first wear resistant layer; 10. and an oil filling hole.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Example 1, referring to fig. 1, the present invention includes a gear body 1, a gear shaft hole 2 is provided at the center of the gear body 1, a plurality of axially penetrating positioning clamping grooves 3 are uniformly provided on the inner wall of the gear shaft hole 2, a plurality of positioning holes 5 are circumferentially provided on the plane of the gear body 1 close to the gear shaft hole 2, a first reinforcing layer 6 and a second reinforcing layer 8 are provided inside the gear body 1, the first reinforcing layer 6 is provided at a side close to the gear shaft hole 2, the second reinforcing layer 8 is provided at a side far from the gear shaft hole 2, a connecting layer 7 is sandwiched between the first reinforcing layer 6 and the second reinforcing layer 8, the first reinforcing layer 6 reinforces the strength of the side close to the gear shaft hole 2 inside the gear body 1, the second reinforcing layer 8 reinforces the strength of the side far from the gear shaft hole 2 inside the gear body 1, the first reinforcing layer 6 and the second reinforcing layer 8 are connected by the connecting layer 7, the stability of the reinforcing layer is increased.

Specifically, 1 surface of gear body is equipped with first wearing layer 9, and first wearing layer 9 carries out effectual protection to 1 surface of gear body, reduces the excessive wearing and tearing of gear.

Referring to fig. 2, the first reinforcing layer 6 is composed of a plurality of first reinforcing members 601, the second reinforcing layer 8 is composed of a plurality of second reinforcing members 801, the first reinforcing members 601 and the second reinforcing members 801 are circumferentially and uniformly distributed in the gear shaft hole 2, the first reinforcing members 601 and the second reinforcing members 801 are not on the same diameter line, the first reinforcing members 601 and the second reinforcing members 801 are arranged in a staggered mode, the first reinforcing members 601 include first reinforcing cores 602 and first reinforcing layers 603, the first reinforcing layers 603 are arranged on two sides of the first reinforcing cores 602, the second reinforcing members 801 include second reinforcing cores 802 and second reinforcing layers 80 and 3, the second reinforcing layers 803 are arranged on two sides of the second reinforcing cores 802, strength of the reinforcing members is guaranteed, structural material is conveniently reduced, structural rigidity is increased, and bonding is stable.

Specifically, the reinforcing members are cast-joined by a fusion casting or insert casting method.

Referring to fig. 3, a plurality of teeth of a cogwheel 4 of gear 1 outer peripheral face evenly distributed, the teeth of a cogwheel 4 is the toper structure, the one end radius that the teeth of a cogwheel 4 is close gear shaft hole 2 is great, 4 tooth top both sides of the teeth of a cogwheel are equipped with round chamfer 402, 4 tooth root both sides of the teeth of a cogwheel are equipped with down round chamfer 403, the crooked direction of lower round chamfer 403 is outside towards the teeth of a cogwheel 4, it is the same with round chamfer 403 radius to go up round chamfer 402, can reduce the stress concentration neutralization noise of gear engagement in-process, the life of extension gear, the improvement transmission stationarity.

The outer wall of the gear teeth 4 is provided with a wear-resistant layer 401, the wear-resistant layer 401 is a carborundum wear-resistant layer, the carborundum wear-resistant layer is sprayed on the outer portion of the gear teeth, the wear-resistant and corrosion-resistant performance is excellent, the bonding strength with the metal surface is high, and the service life of the gear teeth can be prolonged by 2.5 times.

Embodiment 2, positioning channel section 3 sets up to one, is favorable to reducing the processing degree of difficulty, reduces the processing step, makes things convenient for rational in infrastructure.

Preferably, an oil filling hole 10 is arranged between every two gear teeth 4, the oil filling hole 10 is arranged on the outer surface of the first wear-resistant layer 9, and the oil filling hole 10 is used for facilitating temporary stay of lubricating oil, increasing the lubrication of the outer surface of the gear and reducing the wear of the gear.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.

Claims

1. The utility model provides a wear-resisting gear of high strength, includes gear body (1), a plurality of teeth of a cogwheel (4) of gear body (1) outer peripheral face evenly distributed, gear body (1) center is equipped with gear shaft hole (2), teeth of a cogwheel (4) are the toper structure, the radius that teeth of a cogwheel (4) are close gear shaft hole (2) one end is great, is equipped with axial through type positioning groove (3) of a plurality of evenly distributed on gear shaft hole (2) inner wall, be equipped with locating hole (5) that a plurality of circumference distributes on the plane that gear body (1) is close gear shaft hole (2), its characterized in that: gear body (1) inside is equipped with first enhancement layer (6) and second enhancement layer (8), first enhancement layer (6) set up in the one side that is close gear shaft hole (2), second enhancement layer (8) set up in the one side of keeping away from gear shaft hole (2), accompany between first enhancement layer (6) and second enhancement layer (8) connecting layer (7), gear body (1) surface is equipped with first wearing layer (9), gear teeth (4) addendum both sides are equipped with round chamfer (402), gear teeth (4) tooth root both sides are equipped with down round chamfer (403).

2. A high strength, wear resistant gear according to claim 1 wherein: the first reinforcing layer (6) is composed of a plurality of first reinforcing pieces (601), the second reinforcing layer (8) is composed of a plurality of second reinforcing pieces (801), and the first reinforcing pieces (601) and the second reinforcing pieces (801) are evenly distributed in the circumferential direction of the gear shaft hole (2).

3. A high strength, wear resistant gear according to claim 2 wherein: the first reinforcing members (601) and the second reinforcing members (801) are not on the same diameter line, and the first reinforcing members (601) and the second reinforcing members (801) are arranged in a staggered mode.

4. A high strength, wear resistant gear according to claim 3 wherein: the first reinforcement (601) comprises a first reinforcement core (602) and first reinforcement layers (603), the first reinforcement layers (603) being arranged on both sides of the first reinforcement core (602).

5. A high strength, wear resistant gear according to claim 3 wherein: the second stiffener (801) comprises a second stiffener core (802) and a second reinforcement layer (803), the second reinforcement layer (803) being arranged on both sides of the second stiffener core (802).

6. A high strength, wear resistant gear according to claim 1 wherein: and a wear-resistant layer (401) is arranged on the outer surface of the gear teeth (4).

7. A high strength, wear resistant gear according to claim 6 wherein: the wear-resistant layer (401) is a carborundum wear-resistant layer.

8. A high strength, wear resistant gear according to claim 1 wherein: the radius of the upper round chamfer (402) is the same as that of the lower round chamfer (403).

9. A high strength, wear resistant gear according to claim 1 wherein: the bending direction of the lower round chamfer (403) faces the outside of the gear teeth (4).