CN218152244U

CN218152244U - High-strength main speed reducer shell

Info

Publication number: CN218152244U
Application number: CN202222273300.XU
Authority: CN
Inventors: 韩振武; 姜广涛; 李焕; 张庆华; 阴勇; 李娟�; 李美; 张国; 李芳�; 王庆斌
Original assignee: Feicheng Yutong Machinery Co ltd
Current assignee: Feicheng Yutong Machinery Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-12-27
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to a high strength main reducer casing belongs to engineering vehicle accessory technical field. The main speed reducer shell is of an integrally cast and formed structure, a speed reducer assembly cavity bulging to one side is arranged in the middle, a circle of annular assembly disc is arranged on the periphery of the main speed reducer shell, a spindle hole is formed in the center of the assembly cavity, an inner supporting plate horizontally arranged is integrally formed on the bottom side of the inner portion of the assembly cavity, the inner supporting plate covers half of a cavity, an inner spindle hole coaxial with the spindle hole is formed in the inner supporting plate, connecting plates axially extend out of two symmetrical ends of the bottom surface of the main speed reducer shell, fixing plates are respectively butted on the connecting plates at the two ends of the bottom surface of the main speed reducer shell, and the fixing plates are butted with semicircular openings in the connecting plates to form shaft fixing holes. The utility model discloses a reducer case's axle fixed orifices adopts the mode of connecting plate and fixed plate butt joint to constitute, replaces traditional axle fixed orifices integrated casting fashioned form, uses more convenience.

Description

High-strength main speed reducer shell

Technical Field

The utility model relates to an engineering vehicle accessory technical field, concretely relates to high strength main reducer casing.

Background

In a work vehicle, a retarder is a main component of a transmission system for reducing the rotating speed and increasing the torque. The final drive housing is the main mounting support member for the reducer. The fixed orifices that is used for connecting the output shaft among the present engineering vehicle retarder casing all adopts and carries out production with whole casing integrated casting shaping, and the aperture of the output shaft fixed orifices of the casing of this kind of mode production is fixed, when assembling, can't adjust, need carry out very accurate lathe work just can accomplish and carry out good cooperation with the bearing of output shaft, and the assembly operation is comparatively inconvenient when using moreover.

In addition, the torque output of the engineering vehicle is large, so that the strength of the shell of the speed reducer has great influence on the service life of the speed reducer.

Disclosure of Invention

For solving the problem among the prior art, the utility model discloses a high strength main reducer casing has been designed to solve current reducer casing and be used for the inconvenient problem of output shaft connection.

The utility model adopts the technical proposal that: the main reducer casing is the casting shaping structure as an organic whole, and the middle reduction gear assembly chamber that is heaved to one side, periphery are the annular assembly dish of round, it has a plurality of mounting holes to open on the assembly dish, the center department in assembly chamber opens there is the main shaft hole, be provided with the bearing fixed cavity along the axial in the main shaft hole, the bottom surface symmetry both ends in assembly chamber have the connecting plate along the axial extension respectively, and the connecting plate at both ends is opened respectively has half circular arc opening, has docked the fixed plate on the connecting plate at both ends respectively, the fixed plate is opened has the half circular arc opening the same with the connecting plate, the fixed plate docks into circular shape axle fixed orifices with the half circular arc opening of connecting plate, and the axle fixed hole position at both ends is on same line and the axle center is the same, the axial lead in the main shaft hole in assembly chamber is perpendicular with the axial lead in the axle fixed hole at both ends.

Further, the main shaft hole is provided with an outer end face which is in a circular ring shape, an oil filling hole and a plurality of assembling holes are formed in the outer end face, and the oil filling hole is communicated with the bearing fixing cavity.

Furthermore, an inner supporting plate is horizontally arranged on the bottom side of the inner part of the assembling cavity in an integrated mode, the inner supporting plate covers the half cavity, and an inner shaft hole coaxial with the spindle hole is formed in the inner supporting plate.

Furthermore, 4 angulations of the assembly cavity of the main speed reducer shell are thickened and extended outwards respectively, and the whole body is H-shaped.

Furthermore, a reinforcing rib plate is arranged between the inner side of the inner supporting plate and the wall of the assembly cavity.

Furthermore, the plate body of the connecting plate is symmetrically provided with internal thread connecting holes at two sides of the semicircular opening, the plate body of the fixing plate is symmetrically provided with through holes at two sides of the semicircular opening, and the through holes at two sides of the fixing plate are respectively connected and fixed with the internal thread connecting holes of the connecting plate through bolts.

Compared with the prior art, the utility model discloses a high strength main reducer casing's of design progress part lies in: the speed reducer shell adopts an integral casting structure, the stability is good, the strength is high, the fixing hole connected with the output shaft is formed by the butt joint of the fixing plates, the convenience of the installation of the connecting bearing of the output shaft is improved, and the fixing plates are in butt joint with the connecting plate of the shell through bolts, so that the adjustment is more convenient; an inner supporting plate with an inner shaft hole is erected on the inner side of the shell, the inner supporting plate plays a role in reinforcing and supporting the installation of the accelerator, and a reinforcing rib plate is arranged between the inner supporting plate and the cavity wall of the equipment cavity, so that the connection stability is improved; the angulation department of assembly chamber extends the thickening, has further increased the intensity of chamber wall, improves the holistic life of accelerator, is adapted to the use of engineering vehicle more.

Drawings

Fig. 1 is a schematic structural view of a final drive case.

FIG. 2 is a bottom view of the final drive housing shown without the support plate.

FIG. 3 is a sectional view of the final drive housing.

FIG. 4 is a schematic top view of the top surface of the drive unit housing with the cavity removed

In the figure, 1 assembly cavity, 2 assembly disc, 3 spindle hole, 4 connecting plate, 5 inner supporting plate, 6 fixing plate, 21 mounting hole, 22 processing positioning hole, 31 outer end face, 32 assembly hole, 33 oil injection hole, 41 internal thread connecting hole, 51 internal shaft hole and 52 reinforcing rib.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only some embodiments of the present invention, not all embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model discloses an embodiment of a high strength main reducer casing has been designed, and main reducer casing adopts nodular cast iron material integrated casting shaping in this embodiment, and the middle part of casing is the reduction gear assembly chamber 1 that swells to one side for main structure such as assembly reduction gear, the chamber wall thickness of assembly chamber 2 is not less than 8mm. The periphery is annular assembly disc 2 of round, and it has a plurality of mounting holes 21 to open on assembly disc 2, simultaneously, in order to facilitate carrying out lathe work to the blank of casting, the symmetry has opened two processing locating holes 22 on assembly disc 2, fixes a position when conveniently being connected with frock clamp.

The center department in assembly chamber 1 opens there is main shaft hole 3, and main shaft hole 3 is used for the input main shaft to pass fixedly, wherein is provided with the fixed chamber of bearing along the axial, and main shaft hole 3 is equipped with and is the outer terminal surface 31 of annular, and it has oil filler point 33 and a plurality of pilot hole 32 to open on the outer terminal surface 31, and oil filler point 33 intercommunication bearing fixes the chamber. The 4 angled parts of the cavity wall of the assembly cavity 1 are thickened and extended outwards respectively, so that the whole body is H-shaped.

The bottom side integrated into one piece has interior fagging 5 of level setting in the assembly chamber 1 inside, and interior fagging 5 covers the bottom surface opening of half cavity, and thickness is not less than 8mm yet. The inner support plate 5 is provided with an inner shaft hole 51 coaxial with the main shaft hole 3. And reinforcing rib plates 52 are arranged between the two sections of the inner side of the inner supporting plate 5 close to the plate body and the cavity wall of the assembly cavity 1 respectively.

The two symmetrical ends of the bottom surface of the assembly cavity 1 extend out of the connecting plates 4 along the axial direction respectively, the connecting plates 4 at the two ends are provided with semi-arc openings respectively, so that the connecting plates 4 are of U-shaped structures, and the plate bodies of the connecting plates 4 are symmetrically provided with internal threaded connecting holes at the two sides of the semi-arc openings. The connecting plates 4 at two ends are respectively butted with a fixing plate 6, the fixing plates 6 are integrally formed casting pieces, the thickness of the casting pieces is the same as that of the connecting plates 4, the plate bodies are also U-shaped, and semicircular arc-shaped openings which are the same as those of the connecting plates 4 are formed. The plate body of the fixing plate 6 is symmetrically provided with through holes at two sides of the semicircular arc opening, and the through holes at two sides of the fixing plate 6 are respectively connected and fixed with the internal thread connecting holes of the connecting plate 4 through bolts. The fixing plate 6 is butted with the semicircular arc-shaped opening of the connecting plate 4 to form a circular shaft fixing hole, the shaft fixing holes at two ends are positioned on the same axis and have the same aperture, and meanwhile, the axis of the main shaft hole 3 of the assembly cavity 1 is vertically intersected with the axis of the shaft fixing holes at two ends.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and the description of the invention.

Claims

1. The utility model provides a high strength main reducer casing, its characterized in that, main reducer casing is the casting shaping structure as an organic whole, and the middle reduction gear assembly chamber that is bulged to one side, the periphery is the annular assembly dish of round, it has a plurality of mounting holes to open on the assembly dish, the center department in assembly chamber opens there is the main shaft hole, be provided with the fixed chamber of bearing along the axial in the main shaft hole, the bottom surface symmetry both ends in assembly chamber are stretched out along the axial respectively and are had the connecting plate, and the connecting plate at both ends is opened respectively has half circular arc type opening, has the fixed plate on the connecting plate at both ends respectively to the butt joint, the fixed plate is opened has the half circular arc type opening the same with the connecting plate, the fixed plate docks with the half circular arc type opening of connecting plate and becomes circular shape axle fixed orifices, and the axle fixed hole site at both ends is located same axle center line and the aperture is the same, the axial lead in the main shaft hole in assembly chamber is perpendicular with the axial lead of the axle fixed hole at both ends.

2. The high-strength main speed reducer casing as claimed in claim 1, wherein the main shaft hole has an outer end surface in a circular ring shape, and an oil filling hole and a plurality of assembly holes are formed in the outer end surface, and the oil filling hole is communicated with the bearing fixing cavity.

3. A high-strength final drive housing according to claim 2, wherein a horizontally disposed inner supporting plate is integrally formed at a bottom side of an inner portion of the assembly chamber, the inner supporting plate covers the half-cavity, and an inner shaft hole coaxial with the spindle hole is formed in the inner supporting plate.

4. A high-strength final drive casing according to claim 3, wherein the 4 corners of the assembly cavity of the final drive casing are thickened outwards and extended outwards, and the whole casing is H-shaped.

5. The high-strength main reducer casing according to claim 4, wherein a reinforcing rib plate is arranged between the inner side of the inner supporting plate and the wall of the assembly cavity.

6. The high-strength main speed reducer casing according to claim 5, wherein the plate body of the connecting plate is symmetrically provided with female screw connection holes at two sides of the semi-circular opening, the plate body of the fixing plate is symmetrically provided with through holes at two sides of the semi-circular opening, and the through holes at two sides of the fixing plate are respectively connected and fixed with the female screw connection holes of the connecting plate through bolts.