CN210889987U

CN210889987U - Half axle gear

Info

Publication number: CN210889987U
Application number: CN201922023958.3U
Authority: CN
Inventors: 蒋兴敖; 南杰
Original assignee: Taizhou Zhongjie Gear Co ltd
Current assignee: Taizhou Zhongjie Gear Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-06-30
Anticipated expiration: 2029-11-21

Abstract

The utility model provides a half axle gear belongs to gear manufacturing technical field. It has solved the increase of current half axle gear backlash, and wearing and tearing are serious, lubricated not good problem of effect. This side gear includes shaft and wheel body and this shaft and wheel body formula structure as an organic whole, and the outer wall equipartition of wheel body has a plurality of outer teeth of a cogwheel that are the toper, forms the tooth's socket between two adjacent outer teeth of a cogwheel, and the internal spline hole of coaxial setting is seted up to shaft and wheel body, has the axial protrusion on the wheel body and keeps off in the convex shoulder of the inner of tooth's socket, and the outer end of tooth's socket has keeps off along, is in the convex shoulder, keeps off and has the buffering that is used for the teeth of a. The utility model has the advantages of reasonable design, simply, when the wheeler tooth meshing, support through the buffering and lean on device ability automatically regulated tooth clearance, the tooth clearance is little, and square oil storage tank intussuseption is filled with the oil absorption cotton, and the oil storage capacity is big and lubricated effectual, and wearing and tearing are little, long service life.

Description

Half axle gear

Technical Field

The utility model belongs to the technical field of the gear manufacturing, a differential side gear is related to.

Background

The half shaft gear is a bevel gear and is an important part forming an automobile differential, the structure of the half shaft gear is that a bevel gear faces outwards, a spline shaft hole is arranged in the middle, and a gasket is arranged between a differential shell and the half shaft gear in order to reduce abrasion.

When the gear is used, some half shaft gears are in direct contact with the gaskets, the half shaft gears are easy to rub the gaskets when rotating, the gaskets are abraded and thinned to increase tooth gaps, the abrasion powder enables the oil edge difference to cause tooth surface abrasive wear, and gear tooth beating can be caused in serious cases.

The oil groove is add to the binding face of current semi-axis gear and gasket, and this oil groove all is straight flute and circular arc groove, though can guarantee certain lubricity, nevertheless because the contact oil level is little, the oil groove oil reserve is few, and semi-axis gear is at high speed, the high operating mode during operation that bears, the not enough condition of lubrication probably appears, leads to gasket ablation or wearing and tearing serious, and the root of tooth stress concentration of outer gear in addition, the rigidity is weak, and bearing capacity is weak, and compressive strength is low, the disconnected tooth phenomenon easily appears.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, when the wheelbarrow tooth meshing, can automatically regulated backlash, the half axle gear that the meshing backlash is little.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a half axle gear, includes shaft and wheel body and this shaft and wheel body formula structure as an organic whole, the outer wall equipartition of wheel body have a plurality of outer teeth of a cogwheel that are the toper, form the tooth's socket between two adjacent outer teeth of a cogwheel, shaft and wheel body set up the internal spline hole of coaxial setting, its characterized in that, the wheel body on have axial protrusion and keep off the convex shoulder in the inner of tooth's socket, the outer end of tooth's socket have and keep off along, be in the convex shoulder, keep off and have the buffering that is used for the teeth of a cogwheel meshing in the tooth's socket.

The half shaft gear is mainly provided with the buffer abutting device in the tooth groove, the tooth gap of the gear tooth meshing can be reduced through the buffer abutting device, the meshing structure is stable, the tooth surface abrasion is small, and the service life is long.

In a foretell side gear, the buffering support and lean on the device to lean on the piece including the bar that is the rectangle form, the tank bottom of tooth's socket the rectangular channel has, the bar support and lean on size, shape and the rectangular channel adaptation of piece, the bar support and lean on the piece to be in the rectangular channel and this bar supports and leans on piece and rectangular channel elasticity to support and lean on the cooperation. Through setting up the bar and propping against the piece and this bar and propping against the piece and the cooperation is supported to the rectangle groove elasticity and adjust the tooth clearance when can making tooth's socket and teeth of a cogwheel meshing, the tooth clearance is less, and the transmission is stable, and the noise is little.

In foretell side gear, the bar support the both ends of piece and have axial bulge, the notch of rectangular channel have and support spacing portion, the bar support the axial bulge of piece and support the cooperation with spacing portion. Through the axial bulge and the support of supporting the spacing portion to cooperate to prevent that the bar from supporting the piece and breaking away from the rectangular channel, stable in structure, long service life.

In an above-mentioned side gear, the bar support block include the metal support the layer and support the rubber elasticity layer that the layer links firmly through the thermalization mode with the metal, when the bar support the block and be in the rectangular channel, and this rubber elasticity layer laminating fits in the tank bottom of rectangular channel. Through setting up the rubber elastic layer and enabling the bar to support to lean on the piece and support to lean on the cooperation, stable in structure with rectangular channel elasticity.

In the above-mentioned half axle gear, the thickness of the metal abutting layer is greater than the thickness of the rubber elastic layer, and when the strip-shaped abutting block is located in the rectangular groove, the metal abutting layer is higher than the notch of the rectangular groove. The purpose of this is to ensure the mechanical strength of the metal abutment layer.

In the above-mentioned side gear, the tank bottom of rectangular groove still have square oil storage tank, square oil storage tank intussuseption be filled with the oil absorption cotton. The oil storage capacity can be increased by arranging the oil absorption cotton. In actual manufacturing, the oil absorption cotton is an existing material and can be directly purchased in the market.

In the above-mentioned side gear, the width of the square oil storage tank is the same size as the width of the rectangular tank, the length of the square oil storage tank is smaller than the length of the rectangular tank, and the square oil storage tank is located in the middle of the bottom of the rectangular tank. The purpose that sets up like this makes the bar to support to lean on the piece can support in the tank bottom of rectangular channel, makes square oil storage tank support the piece closing cap by the bar, through clearance lubrication.

In the above side gear, the outer end edges of the outer gear teeth are chamfered. The external gear teeth are convenient to mesh for transmission, radial runout and vibration cannot be generated, transmission is stable, and noise is low.

In the above-mentioned side gear, the diameter of the wheel body is larger than that of the axle, and the wheel body and the axle are axially connected to form an axial leaning step, and a circle of arc-shaped groove is arranged at the joint of the axial leaning step formed by the wheel body and the axle. The arc-shaped groove weakens the stress concentration at the joint, so that the joint is not easy to break, and the bearing capacity of the half axle gear is improved.

In the above side gear, the two end openings of the internal spline hole are chamfered to form a flared shape. This facilitates a guided installation.

Compared with the prior art, the half axle gear has the advantages that: structural design is reasonable, simple, when the meshing of foreign steamer tooth, supports to lean on the device can automatically regulated tooth clearance through the buffering, and the tooth clearance is little, and square oil storage tank intussuseption is filled with the oil absorption cotton, and the oil storage capacity is big and lubricated effectual, and wearing and tearing are little, and long service life can reduce stress concentration phenomenon in addition, and meshing transmission stability is good, and the noise is little.

Drawings

Fig. 1 is a cross-sectional structural view of the present side gear.

In the figure, 1, axle; 2. a wheel body; 3. outer gear teeth; 4. an inner splined bore; 5. a shoulder is formed; 6. blocking edges; 7. an axial projection; 8. abutting against the limiting part; 9. a metal abutting layer; 10. a rubber elastic layer; 11. oil absorbing cotton; 12. an axial leaning step; 13. an arc-shaped groove.

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 fig. 1, the side gear mainly comprises a wheel shaft 1 and a wheel body 2, the wheel shaft 1 and the wheel body 2 are of an integrated structure, a plurality of conical outer wheel teeth 3 are uniformly distributed on the outer wall of the wheel body 2, a tooth space is formed between every two adjacent outer wheel teeth 3, an inner spline hole 4 which is coaxially arranged is formed in the wheel shaft 1 and the wheel body 2, a convex shoulder 5 which protrudes axially and is blocked at the inner end of the tooth space is arranged on the wheel body 2, a blocking edge 6 is arranged at the outer end of the tooth space, and a buffering abutting device which is used for meshing the wheel teeth is arranged in the tooth space in the convex shoulder 5 and.

In actual manufacturing, the specific implementation of the buffer abutting device is as follows: the tooth socket mainly comprises rectangular strip-shaped abutting blocks, a rectangular groove is formed in the bottom of a tooth socket, the size and the shape of each strip-shaped abutting block are matched with those of the rectangular groove, the strip-shaped abutting blocks are located in the rectangular groove, and the strip-shaped abutting blocks are elastically abutted and matched with the rectangular groove; when actual design, this bar supports and leans on the both ends of piece to have axial bulge 7, and the notch of rectangular channel has and supports and lean on spacing portion 8, and the bar supports and leans on the axial bulge 7 of piece and supports to lean on spacing portion 8 to lean on the cooperation.

When in actual application, the concrete structure of the strip-shaped abutting block is as follows: the metal supporting block mainly comprises a metal supporting layer 9 and a rubber elastic layer 10 fixedly connected with the metal supporting layer 9 in a thermalization mode, and when the strip-shaped supporting block is positioned in the rectangular groove, the rubber elastic layer 10 is attached to the bottom of the rectangular groove; the thickness of the metal abutting layer 9 is larger than that of the rubber elastic layer 10, and when the strip-shaped abutting block is located in the rectangular groove, the metal abutting layer 9 is higher than the notch of the rectangular groove.

During actual manufacturing, a square oil storage tank is arranged at the bottom of the rectangular tank, and oil absorbent cotton 11 is filled in the square oil storage tank; the width of the square oil storage tank is the same as the width of the rectangular tank in size, the length of the square oil storage tank is smaller than that of the rectangular tank, and the square oil storage tank is located in the middle of the bottom of the rectangular tank.

In practical application, the outer end edge of the outer gear 3 is chamfered; the diameter of the wheel body 2 is larger than that of the wheel shaft 1, the wheel body 2 and the wheel shaft 1 are axially connected to form an axial leaning step 12, and a circle of arc-shaped groove 13 is formed at the joint of the wheel body 2 and the wheel shaft 1 forming the axial leaning step 12; and the orifices at two ends of the internal spline hole 4 are subjected to right angle chamfering treatment to form a flaring shape.

Those not described in detail in this specification are within the skill of the art. 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 side gear, includes shaft (1) and wheel body (2) and this shaft (1) and wheel body (2) formula structure as an organic whole, the outer wall equipartition of wheel body (2) have a plurality of outer teeth of a cogwheel (3) that are the toper, form the tooth's socket between two adjacent outer teeth of a cogwheel (3), shaft (1) and wheel body (2) set up internal spline hole (4) of coaxial setting, its characterized in that, wheel body (2) on have axial protrusion and keep off convex shoulder (5) in the inner of tooth's socket, the outer end of tooth's socket have and keep off along (6), be in convex shoulder (5), keep off and have the buffering that is used for the teeth of a cogwheel to mesh in the tooth's socket in (6) and.

2. The side gear of claim 1, wherein the buffer abutting means comprises a rectangular strip-shaped abutting block, the bottom of the tooth space is provided with a rectangular groove, the size and shape of the strip-shaped abutting block are matched with those of the rectangular groove, the strip-shaped abutting block is arranged in the rectangular groove, and the strip-shaped abutting block is elastically abutted and matched with the rectangular groove.

3. A side gear according to claim 2, wherein the strip-shaped abutment block has axial protrusions (7) at both ends thereof, the notch of the rectangular groove has an abutment limiting portion (8), and the axial protrusions (7) of the strip-shaped abutment block are in abutment engagement with the abutment limiting portion (8).

4. A side gear according to claim 3, wherein the strip-shaped abutment block comprises a metal abutment layer (9) and a rubber elastic layer (10) which is fixedly connected with the metal abutment layer (9) by a thermalization mode, and when the strip-shaped abutment block is positioned in the rectangular groove, the rubber elastic layer (10) is attached to the bottom of the rectangular groove.

5. A side gear according to claim 4, wherein the thickness of the metal abutment layer (9) is greater than the thickness of the rubber elastic layer (10), and when the strip-shaped abutment block is located in the rectangular groove, the metal abutment layer (9) is higher than the notch of the rectangular groove.

6. The side gear of claim 5, wherein the rectangular groove bottom is further provided with a square oil storage groove, and the square oil storage groove is filled with oil absorbent cotton (11).

7. The side gear of claim 6, wherein the width of the square oil reservoir is the same size as the width of the rectangular groove, the length of the square oil reservoir is shorter than the length of the rectangular groove and the square oil reservoir is located at the middle position of the bottom of the rectangular groove.

8. A side gear according to claim 7, wherein the outer end edges of the outer teeth (3) are chamfered.

9. A side gear according to claim 8, wherein the diameter of the wheel body (2) is larger than that of the axle (1), the wheel body and the axle are axially connected to form an axial seating step (12), and the joint of the wheel body (2) and the axle (1) forming the axial seating step (12) is provided with a circle of arc-shaped grooves (13).

10. A side gear in accordance with claim 9, wherein the both end openings of said internally splined bore (4) are chamfered to form a flared shape.