CN209977188U

CN209977188U - Bevel gear

Info

Publication number: CN209977188U
Application number: CN201920579546.5U
Authority: CN
Inventors: 刘寺意
Original assignee: Changzhou Heshida Machinery Equipment Manufacturing Co Ltd
Current assignee: Changzhou Heshida Machinery Equipment Manufacturing Co Ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-01-21
Anticipated expiration: 2029-04-25

Abstract

The utility model discloses a bevel gear, including wheel body and splined hole, the outer periphery of wheel body is provided with the teeth of a cogwheel, the circumference evenly distributed of foreign steamer is followed to the dysmorphism hole, the outside of interior wheel be provided with dysmorphism hole complex step, each the downthehole fixed slot that is provided with of dysmorphism, the fixed slot extends along the circumference of foreign steamer, be provided with the damping piece in the fixed slot, damping piece protrusion in the surface in dysmorphism hole and with the step contact. The axle passes through the splined hole and is connected with interior wheel, interior wheel and foreign steamer interference fit realize fixedly, receive the undulant vibration back of circumference when interior wheel, because damping member protrusion in the interior circumference of foreign steamer and with interior wheel contact, the vibration of circumference mainly concentrates on special-shaped hole position, the vibration reduces at the transmission in-process, consequently, the damping member has played the effect of buffering, has reduced the noise in the bevel gear use, has improved bevel gear's life simultaneously.

Description

Bevel gear

Technical Field

The utility model relates to an automobile speed reducer accessory, in particular to bevel gear.

Background

Bevel gears are used to transmit motion and power between two intersecting shafts, and in general machines, the angle of intersection between two shafts of a bevel gear is equal to 90 °. Like cylindrical gears, bevel gears have reference cones, addendum cones, dedendum cones, and base cones. The cone has a large end and a small end, and the circles corresponding to the large end are respectively called a reference circle, an addendum circle, a dedendum circle and a base circle. The motion of a pair of bevel gears is equivalent to that of a pair of pitch cones which roll only.

Among the prior art, chinese utility model patent that application number is 2017210036511 discloses a bevel gear, and it reduces the vibration that the tooth root position received through being provided with damping material in the gear inboard, and to the bevel gear in the reducing gear box, the gear receives circumference vibration bigger, causes the influence to bevel gear's life-span.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a reduce bevel gear of gear circumference vibration.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a bevel gear, includes wheel body and splined hole, the outer periphery of wheel body is provided with the teeth of a cogwheel, the wheel body is including interior wheel and foreign steamer, the splined hole runs through the center that sets up in interior wheel, the teeth of a cogwheel sets up the outer periphery at the foreign steamer, the center of foreign steamer is provided with special-shaped hole, the circumference evenly distributed of foreign steamer is followed to special-shaped hole, the outside of interior wheel be provided with special-shaped hole complex step, each the downthehole fixed slot that is provided with of special-shaped, the circumference of foreign steamer is followed to the fixed slot and is extended, be provided with the damping piece in the fixed slot, damping piece protrusion in the surface in special-shaped.

By adopting the technical scheme, the shaft is connected with the inner wheel through the spline hole, the inner wheel is fixed with the outer wheel in an interference fit manner, when the inner wheel is subjected to vibration of circumferential fluctuation, the damping piece protrudes out of the inner circumferential surface of the outer wheel and is in contact with the inner wheel, the circumferential vibration is mainly concentrated at the position of the special-shaped hole, and the vibration is reduced in the transmission process, so that the damping piece plays a role in buffering, the noise in the use process of the bevel gear is reduced, and the service life of the bevel gear is prolonged; the cooperation of dysmorphism hole and step has improved the fixed effect between interior wheel and the foreign steamer under this structure.

Preferably, the fixing groove has a U-shaped cross section.

Through adopting above-mentioned technical scheme, played the effect of buffering to each face of step, avoid the damping piece to extend to in the wheel and the foreign steamer to play on the main contact surface of fixed effect simultaneously.

Preferably, a transition groove is formed at a position where the fixing groove contacts with the inner wall of the inner wheel.

Through adopting above-mentioned technical scheme, increase the area of contact of damping piece and fixed slot, simultaneously at fixed in-process, press from both sides tight damping piece.

Preferably, the cross section of the transition groove is triangular.

Through adopting above-mentioned technical scheme, improve the fixed effect of damping piece.

Preferably, the fixing groove has a fan-shaped longitudinal cross section.

Through adopting above-mentioned technical scheme, avoid the damping piece to take place to drop.

Preferably, the outward side of the damping member is curved.

Through adopting above-mentioned technical scheme, increase area of contact and damping piece's volume improves fixed effect and buffering effect.

Preferably, the damping piece is provided with a bolt groove, a bolt is arranged in the bolt groove, and the bolt penetrates through the damping piece and then is in threaded connection with the outer wheel.

Through adopting above-mentioned technical scheme, under the great condition of axial vibration, avoid damping piece not hard up and drop.

Preferably, the profiled hole is provided with six.

Through adopting above-mentioned technical scheme, improve the dysmorphism hole more, the cushioning effect is better, but the ability that bears axial vibration is worse.

In conclusion, the shaft is connected with the inner wheel through the spline hole, the inner wheel is fixed with the outer wheel in an interference fit mode, after the inner wheel is subjected to vibration of circumferential fluctuation, the damping piece protrudes out of the inner circumferential surface of the outer wheel and is in contact with the inner wheel, circumferential vibration is mainly concentrated at the position of the special-shaped hole, and vibration is reduced in the transmission process, so that the damping piece plays a role in buffering, noise in the use process of the bevel gear is reduced, and meanwhile the service life of the bevel gear is prolonged.

Drawings

FIG. 1 is a sectional view of the embodiment;

FIG. 2 is a side view of the embodiment;

FIG. 3 is a cross-sectional view of the position of the damping member;

in the figure, 1, an inner wheel; 11. a splined bore; 2. an outer wheel; 3. gear teeth; 4. a profiled hole; 5. a step; 6. fixing grooves; 7. a damping member; 8. a transition groove; 9. a bolt slot; 10. and (4) bolts.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Example (b):

as shown in fig. 1 and 2, a bevel gear includes a gear body and a spline hole 11, wherein gear teeth 3 are provided on an outer circumferential surface of the gear body, the gear body includes an inner wheel 1 and an outer wheel 2, the spline hole 11 is disposed through a center of the inner wheel 1, and the gear teeth 3 are provided on an outer circumferential surface of the outer wheel 2.

As shown in fig. 3, a special-shaped hole 4 is formed in the center of the outer wheel 2, six special-shaped holes 4 are formed, the special-shaped holes 4 are rectangular, the special-shaped holes 4 are uniformly distributed in the circumferential direction of the outer wheel 2 and penetrate through the outer wheel 2 in the axial direction, a step 5 matched with the special-shaped hole 4 is formed in the outer side (i.e., the outer circumferential surface) of the inner wheel 1, and the outer wheel 2 and the inner wheel 1 are fixed through the step 5 and the special-shaped holes 4.

As shown in fig. 1 and 3, a fixing groove 6 is arranged in each of the special-shaped holes 4, the fixing groove 6 extends along the circumferential direction of the outer wheel 2, the cross section of the fixing groove 6 is U-shaped, a transition groove 8 is arranged at a position where the fixing groove 6 contacts with the inner wall of the inner wheel 1, the cross section of the transition groove 8 is triangular, the longitudinal section of the fixing groove 6 is fan-shaped, and the fixing groove 6 is machined by a boring cutter.

As shown in fig. 1 and 3, a damping member 7 is arranged in the fixing groove 6, the damping member 7 is made of rubber, the elastic coefficient of the rubber is selected according to the magnitude of the vibration force, the damping member 7 protrudes out of the surface of the special-shaped hole 4 and contacts with the step 5, the outward side of the damping member 7 is arc-shaped, and the contact area between the damping member 7 and the inner wheel 1 is enlarged.

As shown in fig. 1, in order to further improve the fixing effect of the damper 7, a bolt groove 9 is provided in the damper 7, a bolt 10 is provided in the bolt groove 9, and the bolt 10 is threaded through the damper 7 and then is screwed to the outer wheel 2.

The working principle is as follows:

the axle passes through splined hole 11 and is connected with interior wheel 1, interior wheel 1 realizes fixedly with 2 interference fit of foreign steamer, receive the undulant vibration back of circumference in interior wheel 1, because damping member 7 protrusion in the interior circumferential surface of foreign steamer 2 and with interior wheel 1 contact, the vibration of circumference mainly concentrates on 4 positions in dysmorphism hole, the vibration reduces at the transmission in-process, consequently damping member 7 has played the effect of buffering, has reduced the noise in the bevel gear use.

Claims

1. The utility model provides a bevel gear, includes wheel body and splined hole (11), the outer periphery of wheel body is provided with teeth of a cogwheel (3), its characterized in that: the wheel body is including interior wheel (1) and foreign steamer (2), splined hole (11) run through the center that sets up in interior wheel (1), the teeth of a cogwheel (3) set up the outer periphery in foreign steamer (2), the center of foreign steamer (2) is provided with dysmorphism hole (4), the circumference evenly distributed of foreign steamer (2) is followed in dysmorphism hole (4), the outside of interior wheel (1) be provided with dysmorphism hole (4) complex step (5), each be provided with fixed slot (6) in dysmorphism hole (4), the circumference of foreign steamer (2) is extended in fixed slot (6), be provided with damping piece (7) in fixed slot (6), damping piece (7) protrusion in the surface in dysmorphism hole (4) and with step (5) contact.

2. The bevel gear according to claim 1, characterized in that: the cross section of the fixing groove (6) is U-shaped.

3. The bevel gear according to claim 2, characterized in that: transition grooves (8) are arranged at the positions where the fixing grooves (6) are contacted with the inner wall of the inner wheel (1).

4. The bevel gear according to claim 3, characterized in that: the cross section of the transition groove (8) is triangular.

5. The bevel gear according to claim 2, characterized in that: the longitudinal section of the fixing groove (6) is fan-shaped.

6. The bevel gear according to claim 5, characterized in that: the outward side of the damping piece (7) is arc-shaped.

7. The bevel gear according to claim 6, characterized in that: the damping piece (7) is provided with a bolt groove (9), a bolt (10) is arranged in the bolt groove (9), and the bolt (10) penetrates through the damping piece (7) and then is in threaded connection with the outer wheel (2).

8. The bevel gear according to claim 1, characterized in that: six special-shaped holes (4) are arranged.