CN220302671U - Noise-reducing arc bevel gear - Google Patents

Abstract

The utility model discloses a noise reduction type arc bevel gear, and relates to the technical field of bevel gears; the gear comprises a gear body, wherein the gear body is in a frustum shape, a conical surface of the gear body is in an annular array structure and is provided with a plurality of arc teeth, and the bottom of the gear body is provided with a connecting shaft part used for being connected with a shaft lever; the annular plate is arranged at the top of the gear body, and an annular cavity is formed in the annular plate; according to the utility model, the annular plate is arranged at the top of the gear body, the annular cavity is formed in the annular plate, lubricating oil is injected from the oil filling hole, and the lubricating oil flows out from the gap between the ball and the rolling groove under the action of centrifugal force generated during transmission of the gear body through rolling fit of the ball and the rolling groove, so that the arc teeth are smeared and lubricated, noise generated during transmission of two bevel gears is effectively reduced, abrasion of the transmission of the two bevel gears is reduced, and reliability during transmission of the two bevel gears is improved.

Description

Noise-reducing arc bevel gear

Technical Field

The utility model relates to the technical field of bevel gears, in particular to a noise reduction type arc bevel gear.

Background

The bevel gear is used for transmitting motion and power between two intersecting shafts, and in general machinery, the intersecting angle between two axes of the bevel gear is equal to 90 degrees, and the bevel gear is provided with an indexing cone, a tooth top cone, a tooth root cone and a base cone similar to a cylindrical gear. The cone has big end and tip, the circle that its corresponds big end is called pitch circle, addendum circle, root circle and base circle respectively, the motion of a pair of bevel gears is equivalent to a pair of pitch cones and makes pure roll, current bevel gear is though can be used for the transmission, but whole structure does not possess the noise reduction function, noise is comparatively big between gear and the gear drive, though current adoption is artificial smeared on the gear, with the noise that reduces two gear tooth meshing friction and produce, and improve the meshing transmission effect of two gears, but because of its conical structure and transmission operation, the lubricating oil is very easy quick to run off, need artificial and frequent smear, and the lubricating oil is comparatively extravagant, in case the untimely lubricating oil runs off and volatilizes soon, lead to two gear drive hard friction, thereby make noise pollution big, simultaneously the tooth damage to two gears is great, consequently, the utility model provides a noise reduction type arc bevel gear.

Disclosure of Invention

The utility model aims at: in order to solve the problems in the background described above, the present utility model provides a noise reduction type curved bevel gear.

The utility model adopts the following technical scheme for realizing the purposes:

the noise reduction type arc bevel gear comprises a gear body, wherein the gear body is in a frustum shape, a conical surface of the gear body is in an annular array structure and is provided with a plurality of arc teeth, and the bottom of the gear body is provided with a connecting shaft part used for being connected with a shaft lever;

the annular plate is installed the top of gear body, the annular cavity has been constructed to the annular plate internal structure, and one side inner wall of annular cavity is annular array and runs through and offer a plurality of rolling groove, all roll in a plurality of rolling groove is connected with the ball, set up the tank filler neck with annular cavity intercommunication on the annular plate.

Further, the connecting shaft portion includes:

one end of the sleeve is connected with the circle center of the gear body, the inner wall of the sleeve is provided with a matched spline, and the inner wall of the sleeve is provided with a locking screw hole in a penetrating mode.

Further, a plurality of reinforcing ribs are connected between the sleeve and the gear body in an annular array.

Further, the inner wall of the annular plate is provided with a convex plate, the top of the gear body is provided with two threaded holes, two screws penetrate through the convex plate in a threaded mode, and the end portions of the two screws are respectively inserted into the two threaded holes in a threaded mode.

Further, the gear body, the arc teeth and the sleeve are made of 40Cr steel and integrally formed.

Further, a transition arc is constructed between the root of the arc-shaped tooth and the gear body.

Further, the outer surfaces of the gear body and the arc teeth are both sprayed with wear-resistant layers.

The beneficial effects of the utility model are as follows: through set up the annular slab at the top of gear body, and set up annular cavity in the annular slab, through pouring into lubricating oil in the tank filler hole from, through the rolling fit of ball and indent, under the centrifugal force effect that gear body produced when the transmission, lubricating oil trickles out in the clearance of ball and indent to smear the lubrication to the arc tooth, noise that produces when not only effectually reduces two bevel gear transmissions can also reduce two bevel gear transmission's wearing and tearing simultaneously, reliability when having improved two bevel gear transmissions.

Drawings

FIG. 1 is a perspective view of the structure of the present utility model;

FIG. 2 is a perspective cross-sectional view of the present utility model;

FIG. 3 is a plan elevation view of the present utility model;

FIG. 4 is an enlarged view of the utility model at A in FIG. 2;

reference numerals: 1. a gear body; 2. arc teeth; 3. a connecting shaft portion; 4. a ring plate; 5. a ball; 6. a fuel filler hole; 7. reinforcing ribs; 8. a threaded hole; 9. a screw; 301. a sleeve; 302. matching the spline; 303. locking the screw hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1, 2, 3 and 4, the noise-reducing arc bevel gear comprises a gear body 1, wherein the gear body 1 is in a frustum shape, a plurality of arc teeth 2 are formed in a circular array on the conical surface of the gear body 1, and a connecting shaft part 3 for connecting with a shaft lever is arranged at the bottom of the gear body 1; the annular plate 4 is arranged at the top of the gear body 1, an annular cavity is constructed in the annular plate 4, a plurality of rolling grooves are formed in the inner wall of one side of the annular cavity in an annular array penetrating manner, balls 5 are connected in the rolling grooves in a rolling manner, and oil filling holes 6 communicated with the annular cavity are formed in the annular plate 4, so that the device is more reasonable, preferably, the rolling grooves are spherical, when the balls 5 are connected in the rolling grooves in a rolling manner, one part of the balls 5 protrudes out of the annular plate 4 but cannot separate from the annular cavity, an annular sponge ring is arranged in the annular cavity and is used for abutting the balls 5, so that the balls 5 are always positioned in the rolling grooves, one side of the annular plate 4 provided with the rolling grooves is conical, not only is the flow of lubricating oil into the tooth channels, but also normal transmission of the two gear bodies 1 is not influenced, and the abutting at the moment is not hard and only a certain abutting force is required, the number of the balls 5 is consistent with that of the arc teeth 2 only by limiting the balls 5 to be positioned in the rolling grooves, a plurality of the balls 5 respectively correspond to the tooth paths between two adjacent arc teeth 2, in actual use, lubricating oil is injected into the annular cavity through the oil filling hole 6, the oil filling hole 6 is blocked by using a rubber piston, the gear body 1 is fixedly connected with the shaft rod through the connecting shaft part 3, the gear body 1 generates certain centrifugal force during transmission, the balls 5 roll in the rolling grooves to a certain extent under the action of the centrifugal force, the lubricating oil in the annular cavity flows out along the gaps between the balls 5 and the inner walls of the rolling grooves, so that the lubricating oil flows into the tooth paths between two adjacent arc teeth 2, and when the teeth are transmitted by the two gear bodies 1, the lubricating oil is smeared on the arc teeth 2 on the two gear bodies 1, with the effect that plays the lubrication to reduce the noise that the hard friction of arc tooth 2 on two gear body 1 produced, through the rolling cooperation of ball 5 and the indent, not only can make the lubricating oil in the annular cavity flow out, also can make lubricating oil can not too much run off under the condition that satisfies lubrication simultaneously, the loss is comparatively slow, the staff only need regularly to add lubricating oil in the annular cavity can, compare in current direct lubrication oil of scribbling, the holistic structure of this device makes lubricating oil scribble and need not too frequently, and extravagant less, also can not lead to the noise because of scribbling untimely.

As shown in fig. 2 and 3, in some embodiments, the shaft portion 3 includes: sleeve 301, one end is connected with the centre of a circle of gear body 1, cooperation spline 302 has been seted up to sleeve 301's inner wall, sleeve 301's inner wall runs through and has seted up locking screw 303, when installing gear body 1, establish sleeve 301 cover on the axostylus axostyle, and make the spline fit on cooperation spline 302 and the axostylus axostyle, run through locking screw to locking screw 303 internal thread again, locking screw contradicts the axostylus axostyle, thereby reach the effect with gear body 1 and axostylus axostyle fixed, cooperate through the spline on cooperation spline 302 and the axostylus axostyle, thereby the steadiness after gear body 1 and the axostylus axostyle are fixed is improved, the better reliability when having improved the transmission.

As shown in fig. 3, in some embodiments, a plurality of reinforcing ribs 7 are connected between the sleeve 301 and the gear body 1 in an annular array, and the reinforcing ribs 7 are used for reinforcing the connection strength between the sleeve 301 and the gear body 1, so that the torsion resistance between the sleeve 301 and the gear body 1 is higher.

As shown in fig. 4, in some embodiments, the inner wall of the ring plate 4 is configured with a convex plate, two threaded holes 8 are formed in the top of the gear body 1, two screws 9 penetrate through the convex plate in a threaded manner, the ends of the two screws 9 are respectively inserted into the two threaded holes 8 in a threaded manner, and the ring plate 4 is detachably connected with the gear body 1 through the threaded fit of the threaded holes 8 and the screws 9, so that lubricating oil can be conveniently added.

As shown in fig. 1, in some embodiments, the gear body 1, the arc teeth 2 and the sleeve 301 are made of 40Cr steel and are integrally formed, the 40Cr steel has better toughness and wear resistance, and meanwhile, the integral structural forming enables the overall structural strength of the bevel gear to be better, so that the reliability is better.

As shown in fig. 1 and 3, in some embodiments, a transition arc is configured between the tooth root of the arc tooth 2 and the gear body 1, and the transition arc makes the connection between the arc tooth 2 and the gear body 1 smoother, so that stress concentration of connection between the arc tooth 2 and the gear body 1 is avoided, so that the overall structural strength of the arc tooth 2 and the gear body 1 is better, and thus the reliability of the arc bevel gear is better.

As shown in fig. 1, in some embodiments, the outer surfaces of the gear body 1 and the arc teeth 2 are both coated with a wear-resistant layer, and in order to make the device more reasonable, preferably, the wear-resistant layer is formed by combining ZS-911 wear-resistant waterproof paint mainly made of high-temperature molecular materials, wear-resistant aggregate, superfine powder and inorganic polymer dispersion liquid, and the wear-resistant layer has good wear resistance, high strength and rigidity, can effectively resist high-speed impact force and shearing stress, and is used for improving the wear resistance of the surface of a bevel gear, so that the wear of the bevel gear is better avoided, and the bevel gear can be driven more reliably.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The noise reduction type arc bevel gear comprises a gear body (1), and is characterized in that the gear body (1) is in a frustum shape, a plurality of arc teeth (2) are formed in a circular array on the conical surface of the gear body (1), and a connecting shaft part (3) used for being connected with a shaft rod is arranged at the bottom of the gear body (1);

the annular plate (4) is installed at the top of gear body (1), be constructed with annular cavity in annular plate (4), one side inner wall of annular cavity is annular array and runs through and offer a plurality of rolling groove, all roll-connect in the rolling groove of a plurality of have ball (5), set up on annular plate (4) with oil filler hole (6) of annular cavity intercommunication.

2. The noise-reducing curved bevel gear according to claim 1, wherein the shaft portion (3) comprises:

one end of the sleeve (301) is connected with the circle center of the gear body (1), the inner wall of the sleeve (301) is provided with a matched spline (302), and the inner wall of the sleeve (301) is provided with a locking screw hole (303) in a penetrating mode.

3. The noise reduction type arc bevel gear according to claim 2, wherein a plurality of reinforcing ribs (7) are connected between the sleeve (301) and the gear body (1) in an annular array.

4. The noise reduction type arc bevel gear according to claim 1, wherein the inner wall of the ring plate (4) is provided with a convex plate, the top of the gear body (1) is provided with two threaded holes (8), two screws (9) are threaded on the convex plate, and the ends of the two screws (9) are respectively inserted into the two threaded holes (8).

5. The noise reduction type arc bevel gear according to claim 2, wherein the gear body (1), the arc teeth (2) and the sleeve (301) are all made of 40Cr steel and integrally formed.

6. The noise-reducing curved bevel gear according to claim 1, characterized in that a transition arc is formed between the tooth root of the curved tooth (2) and the gear body (1).

7. The noise-reducing curved bevel gear according to claim 1, wherein the outer surfaces of the gear body (1) and the curved teeth (2) are both coated with a wear-resistant layer.