CN218031341U

CN218031341U - Half shaft oil seal piece of agricultural mechanical transmission

Info

Publication number: CN218031341U
Application number: CN202222153687.5U
Authority: CN
Inventors: 黄泽伟
Original assignee: Chuzhou Yueda Industrial Co ltd
Current assignee: Chuzhou Yueda Industrial Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-12-13
Anticipated expiration: 2032-08-16

Abstract

The utility model discloses an agricultural machinery gearbox semi-axis oil seal spare, rubber seal including metal framework and outside nestification have the oil blanket spring, metal framework constitutes the oil blanket body with rubber seal jointly, metal framework bottom movable mounting has interior along open-ended dirt guard, the dirt guard is connected with the semi-axis, and the dirt guard inner circle annular distribution has a plurality of end to end lapped elasticity dustproof component, the elasticity dustproof component is including being fixed in the axostylus axostyle of dirt guard inner circle and the sleeve pipe that cup joints through reset torsion spring and axostylus axostyle rotation, sleeve pipe one side fixedly connected with arc separation blade, when the semi-axis high-speed rotation is followed to the dirt guard, under the effect of centrifugal force, arc separation blade rotates in the dirt guard and opens. The utility model discloses an install the dirt proof boot additional on the semi-axis oil blanket, let the cooperation of the dustproof subassembly of dirt proof boot and its inside elasticity, can effectively promote the dust seal effect of oil blanket, increase of service life.

Description

Half shaft oil seal piece of agricultural mechanical transmission

Technical Field

The utility model relates to a gearbox technical field especially relates to an agricultural machinery gearbox semi-axis oil seal spare.

Background

With the continuous improvement of the automation degree of agricultural production, more and more agricultural machines are put into the current agricultural production, but the requirements of the agricultural machines on a gearbox are high due to the special operating environment, a half shaft oil seal in the gearbox is positioned at the lower part of a chassis, the half shaft oil seal is used for sealing and dividing two places of a drive axle and a wheel reduction gear, and the half shaft is used for transmitting the output torque of a differential half shaft gear to a drive wheel or the wheel reduction gear.

The existing patent publication numbers are: CN207034177U, the name of this patent are "a dustproof semi-axis oil blanket", including sealed skeleton of excircle, rubber seal and oil blanket spring, the sealed skeleton of excircle be the U-shaped skeleton, its outside is static seal side, dustproof skeleton is placed in the U-shaped inslot of the sealed skeleton of excircle and with the sealed skeleton contact cooperation of excircle, dustproof skeleton extends to the center and axle clearance cooperation, the utility model has the characteristics of simple structure, simple to operate, dust-proof ability are good.

Among the above-mentioned prior art, dustproof skeleton can play certain dustproof effect to the semi-axis oil blanket, but also gather dust and impurity easily in its cavity that forms with the cooperation of the sealed skeleton of excircle, and the sealing opening of oil blanket may be got back to these dusts when the vehicle braking for the service environment of semi-axis oil blanket is more abominable, and after the parking, the dust still can get into in the cavity and attached to the sealing opening department at the rubber seal body through the dust exhaust hole on the dustproof skeleton, influences the sealed effect of semi-axis oil blanket.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide an oil seal for a half shaft of an agricultural mechanical gearbox, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an agricultural machinery gearbox semi-axis oil seal spare, includes metal framework and the outside nested rubber seal that has the oil blanket spring, the oil blanket body is constituteed jointly to metal framework and rubber seal, metal framework bottom movable mounting has interior edge open-ended dirt guard, the dirt guard is connected with the semi-axis, and the dirt guard inner circle annular distribution has a plurality of end to end lapped elasticity dustproof component, elasticity dustproof component is including the axostylus axostyle that is fixed in the dirt guard inner circle and the sleeve pipe that cup joints through reset torsion spring and axostylus axostyle rotation, sleeve pipe one side fixedly connected with arc separation blade, when the semi-axis high-speed rotation is followed to the dirt guard, under the effect of centrifugal force, arc separation blade rotates in the dirt guard and opens, when the dirt guard is static, arc separation blade receives torsional spring torsion overlap joint on adjacent sleeve pipe, the outside of dirt guard bottom is equipped with the chamfer, sets up the dust exhaust hole of a plurality of slopes on its chamfer face.

Preferably, the top of the dustproof sleeve is fixedly connected with a metal connecting ring, the top of the metal connecting ring is abutted against the outer edge of the bottom of the rubber sealing body,

preferably, a plurality of reinforcing rib plates are annularly distributed inside the dustproof sleeve, at least one reinforcing rib plate is arranged, the top of each reinforcing rib plate is fixed with the top of the inner wall of the dustproof sleeve, and the bottom of each reinforcing rib plate is fixed with the bottom of the inner wall of the dustproof sleeve.

Preferably, the two ends of the shaft rod are respectively fixed at the top and the bottom of the inner wall of the dustproof sleeve.

Preferably, one side of the reinforcing rib plate is welded and fixed with the inner side wall of the dustproof sleeve.

Preferably, a rubber gasket is embedded in one side of the arc-shaped separation blade and is positioned at the lap joint of the arc-shaped separation blade and the adjacent sleeve.

The utility model provides an agricultural machinery gearbox semi-axis oil seal spare. The method has the following beneficial effects:

this an agricultural machinery gearbox semi-axis oil seal spare, through install the dirt proof boot additional on the semi-axis oil blanket, let the cooperation of dirt proof boot and its inside elasticity dustproof components, can effectively promote the dustproof sealing effect, when the agricultural machinery is when going, part dust is kept off by the dirt proof boot, the tiny dust of another part then gets into in the dirt proof boot through the arc separation blade of opening because of centrifugal force, discharge from the dust exhaust hole fast again under the centrifugal force effect, prevent that the dust from getting into the sealed department of oil blanket, when the agricultural machinery stops, the arc separation blade in time resets closed under the effort of torsional spring that resets, prevent that a plurality of dust exhaust holes of dust process dirt proof boot from falling on the oil blanket.

Drawings

Fig. 1 is a schematic view of an overall structure of an oil seal of a half shaft of an agricultural mechanical transmission;

FIG. 2 is a cross-sectional view of a dust boot in the oil seal of the transmission half shaft of the agricultural machine of the present invention;

fig. 3 is the utility model provides a structural schematic of elasticity subassembly that prevents dust in agricultural machine gearbox semi-axis oil seal spare.

Illustration of the drawings:

1. a metal skeleton; 2. an oil seal spring; 3. a rubber seal body; 4. a metal connecting ring; 5. a dust-proof sleeve; 6. reinforcing rib plates; 7. an elastic dust-proof component; 701. a shaft lever; 702. a sleeve; 703. a return torsion spring; 704. an arc-shaped baffle plate; 705. a rubber gasket; 8. a dust exhaust hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, an oil seal for half shaft of agricultural machinery gearbox comprises a metal framework 1 and a rubber seal body 3 nested with an oil seal spring 2 at the outer side, the metal framework 1 and the rubber seal body 3 jointly form an oil seal body, a dustproof cover 5 with an opening at the inner edge is movably installed at the bottom of the metal framework 1, the dustproof cover 5 is connected with the half shaft, when the agricultural machinery runs, part of dust is blocked by the dustproof cover 5, a plurality of elastic dustproof components 7 which are lapped end to end are annularly distributed at the inner ring of the dustproof cover 5, the elastic dustproof components 7 comprise a shaft lever 701 fixed at the inner ring of the dustproof cover 5 and a sleeve 702 which is rotationally sleeved with the shaft lever 701 through a reset torsion spring 703, an arc-shaped blocking piece 704 is fixedly connected to one side of the sleeve 702, when the dustproof cover 5 rotates at high speed along with the half shaft, under the effect of centrifugal force, arc separation blade 704 is opened in the rotation of dirt proof boot 5, tiny dust then gets into in the dirt proof boot 5 through the arc separation blade 704 of opening, when the dirt proof boot 5 is static, arc separation blade 704 receives torsional spring 703 torsion overlap joint on adjacent sleeve pipe 702, prevent that a plurality of dust exhaust holes 8 of dust proof boot 5 from falling on the oil blanket sealing port, reduce the dust residue in the dirt proof boot 5 simultaneously, avoid dust exhaust hole 8 to block up, promote the effect of follow-up dustproof dust removal, the outside of dirt proof boot 5 bottom is equipped with the chamfer, set up the dust exhaust hole 8 of a plurality of slopes on its chamfer face, dust exhaust hole 8 is established on the chamfer face, make the dust in the dirt proof boot 5 discharge towards the direction of keeping away from the oil blanket.

The utility model discloses among the further technical scheme, 5 top fixedly connected with metal connecting ring 4 of dirt proof boot, metal connecting ring 4 top and the outer looks butt of following in rubber seal 3's bottom prevent that oil seal spare from taking place deformation by a wide margin in long-term use back, 3 sealed departments of rubber seal.

The utility model discloses among the further technical scheme, 5 inside annular distributions of dirt proof boot have a plurality of deep floor 6, deep floor 6 is one at least, and deep floor 6 top is fixed with 5 inner wall tops of dirt proof boot, and its bottom is fixed with 5 inner wall bottoms of dirt proof boot, and one side of deep floor 6 and the inside wall welded fastening of dirt proof boot 5, deep floor 6 has increased the structural strength of dirt proof boot 5, promotes the crashproof anti deformability of semi-axis oil blanket side, increase of service life.

The utility model discloses among the further technical scheme, axostylus axostyle 701 both ends are fixed in the inner wall top and the inner wall bottom of dirt proof boot 5 respectively, consolidate the structure of dirt proof boot 5 through axostylus axostyle 701.

The utility model discloses among the further technical scheme, arc separation blade 704 one side inlays and is equipped with rubber gasket 705, and rubber gasket 705 is located the lap joint of arc separation blade 704 and adjacent sleeve pipe 702, utilizes rubber gasket 705 to reduce the sound that produces when arc separation blade 704 contacts with sleeve pipe 702, also lets arc separation blade 704 and sleeve pipe 702 laminate more.

During the use, through install dirt proof boot 5 additional on the semi-axis oil blanket, let dirt proof boot 5 and its inside elasticity dustproof subassembly 7 cooperation, promote the dustproof sealing effect, when agricultural machinery is going, dirt proof boot 5 follows the axostylus axostyle and rotates, under the effect of centrifugal force, arc separation blade 704 upset in the elasticity dustproof subassembly 7 is opened, part dust is kept off by dirt proof boot 5 earlier, the tiny dust of another part then gets into in the dirt proof boot 5 through the arc separation blade 704 of opening, again discharge from the dust exhaust hole 8 in the outside under the effect of centrifugal force fast, guide the dust, prevent that the dust from getting into the sealed department of oil blanket, when agricultural machinery stops down, arc separation blade 704 in the elasticity dustproof subassembly 7 in time puts on sleeve pipe 702 on another elasticity dustproof subassembly 7 under the effort of torsional spring 703 that resets, thereby realize the closure that resets, prevent that the dust from falling in the oil blanket seal through a plurality of dust exhaust hole 8 of dirt proof boot 5, and gusset 6 and metal connecting ring 4 on the dirt proof boot 5 can also play the effect of reinforcing protection to the body of consolidating, improve the structural strength of oil blanket, make the oil blanket, prolong service life, non-deformable.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an agricultural machinery gearbox semi-axis oil seal spare, includes metal framework (1) and outside nested rubber seal (3) that have oil blanket spring (2), oil blanket body, its characterized in that are constituteed jointly in metal framework (1) and rubber seal (3):

the bottom of the metal framework (1) is movably provided with a dustproof sleeve (5) with an opening at the inner edge;

the dustproof sleeve (5) is connected with the half shaft, and a plurality of elastic dustproof assemblies (7) which are lapped end to end are annularly distributed on the inner ring of the dustproof sleeve (5);

the elastic dustproof assembly (7) comprises a shaft lever (701) fixed on an inner ring of the dustproof sleeve (5) and a sleeve (702) rotatably sleeved with the shaft lever (701) through a reset torsion spring (703), and one side of the sleeve (702) is fixedly connected with an arc-shaped baffle plate (704);

when the dustproof sleeve (5) rotates at a high speed along with the half shaft, the arc-shaped blocking piece (704) rotates in the dustproof sleeve (5) to be opened under the action of centrifugal force, and when the dustproof sleeve (5) is static, the arc-shaped blocking piece (704) is in torsion lap joint with the adjacent sleeve (702) by the reset torsion spring (703);

the outer side of the bottom of the dustproof sleeve (5) is provided with a chamfer, and the chamfer surface of the dustproof sleeve is provided with a plurality of inclined dust exhaust holes (8).

2. The agricultural mechanical gearbox half shaft oil seal component as claimed in claim 1, wherein a metal connecting ring (4) is fixedly connected to the top of the dust cover (5), and the top of the metal connecting ring (4) is abutted to the outer edge of the bottom of the rubber sealing body (3).

3. The oil seal component for the half shaft of the agricultural mechanical gearbox according to claim 1, wherein a plurality of reinforcing rib plates (6) are annularly distributed in the dustproof sleeve (5), at least one reinforcing rib plate (6) is arranged, the top of each reinforcing rib plate (6) is fixed to the top of the inner wall of the dustproof sleeve (5), and the bottom of each reinforcing rib plate (6) is fixed to the bottom of the inner wall of the dustproof sleeve (5).

4. The agricultural mechanical gearbox half shaft oil seal as claimed in claim 1, wherein the two ends of the shaft rod (701) are respectively fixed to the top and the bottom of the inner wall of the dustproof sleeve (5).

5. The agricultural mechanical gearbox half shaft oil seal according to claim 3, characterized in that one side of the reinforcing rib plate (6) is welded and fixed with the inner side wall of the dustproof sleeve (5).

6. The agricultural mechanical gearbox half shaft oil seal as claimed in claim 1, characterized in that a rubber gasket (705) is embedded in one side of the arc-shaped blocking piece (704), and the rubber gasket (705) is located at the overlapping position of the arc-shaped blocking piece (704) and the adjacent sleeve (702).