CN203272745U

CN203272745U - Upper transmission case

Info

Publication number: CN203272745U
Application number: CN 201320226077
Authority: CN
Inventors: 王文科
Original assignee: JINJIANG KEHUA AUTOMOBILE FITTINGS Co Ltd
Current assignee: JINJIANG KEHUA AUTOMOBILE FITTINGS Co Ltd
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2013-11-06
Anticipated expiration: 2023-04-28

Abstract

The utility model discloses an upper transmission case which is composed of a shell body, an input assembly and an output assembly. The input assembly comprises an input gear, a second transmission case shaft and a flange. The output assembly comprises an output gear, a bearing seat, a bearing, an end cover, a protruding edge and a protruding edge separating sleeve. A sealing device is arranged between the flange and the tail end of the input gear, and comprises an upper oil seal, a check ring and a separation sleeve, a boss is arranged on the inward concave portion of the end cover, a groove matched with the boss of the end cover is formed in the lower end face of a chip-proof nut, an inner cavity is formed around the end cover and the chip-proof nut, a plug screw through hole is formed in the position, leading to the inner cavity, of the end cover, a plug screw is arranged on the through hole, a magnet is arranged on the end portion of the plug screw, a lower oil seal is arranged between the end cover and the lower portion of the output gear, the protruding edge separation sleeve, the protruding edge and a flat gasket are arranged at the lower end of the output gear in sequence, and finally the output gear is fixed through a grooved nut and an opened plug pin. The normal work of the input gear and the output gear can be ensured, overburning cannot occur, the maintenance rate is lowered, cost is reduced, scrap iron and other sundries in the shell body can be cleaned, and the operation is convenient.

Description

Upper gear box

Technical field

The utility model relates to the excavator transmission system, relates in particular to upper gear box.

Background technique

The excavator transmission system is comprised of gearbox, upper gear box, lower transmission case, front and back output shaft, engine output shaft access gearbox, output shaft of gear-box access upper gear box, upper gear box is through commutation, be transferred to lower transmission case, output shaft docks with front-rear axle deceleration assembly before and after lower transmission case, with power transmission to the front and back ransaxle.

Upper gear box is comprised of housing, input assembly, output assembly, wherein input assembly and be comprised of input tooth, gearbox two axles, flange, bearing, the output assembly is comprised of miscellaneous parts such as output gear, bearing support, bearing, end cap, nut, flange and flange spacers.This structural imperfection is: the one, be arranged on bearing between input tooth and flange, will there be certain gap, the gap can make the lubricant oil in housing flow directly in gearbox, cause inputting tooth and output gear burns out, the 2nd, the foreign material such as iron filings in housing can drop between output gear and bearing support, remain in lower oil sealing top, cause the iron filings foreign material not easy to clean so that damage lower oil sealing, cause oil seepage and damage gear pair and bearing, increase the user cost of parts.

In view of this, the inventor has this case to produce for the defects further investigation of upper gear box in prior art then.

Summary of the invention

In order to overcome above shortcomings part in prior art, the purpose of this utility model is to provide a kind of structural design novel, the upper gear box of longer service life.

in order to reach above-mentioned purpose, the utility model adopts following concrete technological scheme: upper gear box is by housing, the input assembly, the output assembly forms, the input assembly comprises the input tooth, gearbox two axles, flange, be provided with the axis hole for fit gearbox two axles in the input tooth, flange by bolt-locking on housing, be provided with upper bearing (metal) between flange and input tooth, the output assembly comprises output gear, bearing support, bearing, end cap, nut, flange, the flange spacer, lower housing portion offers the lower central hole with the output gear coaxial inner conductor, close at described lower central borehole jack and be fixed with bearing support, fit is fixed with lower bearing between described bearing support and output gear, one is passed bearing support circumferential hole with the disk shape end cap of indent blind hole by bolt and is fixed on the housing lower end surface, the middle part of output gear is fixed by anti-bits nut, the lower end of output gear is provided with the flange spacer successively, flange, plain cushion, fix by slotted nut and opening latch at last, end between described flange and input tooth is provided with seal arrangement, described seal arrangement comprises oil sealing, back-up ring and spacer, the inner fovea part of described end cap is provided with boss, the lower end surface of described anti-bits nut is provided with the groove with end cap boss coupling, and form an inner chamber at end cap with around anti-bits nut, end cap leads to inner chamber and is provided with the plug screw through hole, plug screw is housed on through hole, the end of plug screw is provided with magnet, also be provided with lower oil sealing between the bottom of end cap and output gear.

The utility model advantage compared with prior art is:

1, the utility model has added a seal arrangement on the input assembly, and the interior lubricant oil of housing can not flowed in gearbox, guarantees the normal operation of input tooth and output gear, can not burn, and reduces maintenance rate and Cost reduction;

2, the utility model is by end cap boss and anti-bits nut lower end groove fit, prevent that the foreign material such as iron filings in housing from remaining on lower oil sealing, and the damage oil sealing, cause user cost to increase, and by the magnet on plug screw with iron adsorption, extract at last plug screw out and directly clear up the iron filings of absorption, and can clean the residue in housing by the plug screw through hole, easy to operate.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the I-I enlarged view of Fig. 1;

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment

In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.

with reference to Fig. 1, shown in Figure 2, upper gear box is by housing 1, the input assembly, the output assembly forms, the input assembly comprises input tooth 2, gearbox two axles 3, flange 4, be provided with the axis hole for fit gearbox two axles in input tooth 2, gearbox two axles 3 are connected with gearbox 5, flange 4 by bolt-locking on housing 1, be provided with upper bearing (metal) 6 between flange 4 and input tooth 2, end between described flange 4 and input tooth 2 is provided with seal arrangement, described seal arrangement comprises oil sealing 7, back-up ring 8 and spacer 9, the output assembly comprises output gear 10, bearing support 11, bearing, end cap 12, nut, flange 13, flange spacer 14, housing 1 bottom offers the lower central hole with the output gear coaxial inner conductor, close at described lower central borehole jack and be fixed with bearing support 11, fit is fixed with lower bearing 15 between described bearing support 11 and output gear 10, one is passed bearing support 11 circumferential hole with the disk shape end cap 12 of indent blind hole by bolt and is fixed on housing 1 lower end surface, the middle part of output gear 10 is fixing by anti-bits nut 16, the lower end of output gear 10 is provided with flange spacer 14 successively, flange 13, plain cushion 17, fixing by slotted nut 18 and opening latch 19 at last, the inner fovea part of described end cap 12 is provided with boss 20, the lower end surface of described anti-bits nut 18 is provided with the groove 21 with end cap boss coupling, coordinate with anti-bits nut lower end groove 21 by end cap boss 20, prevent that the iron filings foreign material in housing 1 from remaining on lower oil sealing 26, and form an inner chamber 22 at end cap 12 with around anti-bits nut 16, end cap 12 leads to inner chamber and is provided with plug screw through hole 23, plug screw 24 is housed on through hole 23, the end of plug screw 24 is provided with magnet 25, be provided with lower oil sealing 26 between the bottom of end cap 12 and output gear 10, iron filings in housing can drop on the inner fovea part of end cap from inner chamber, then held by magnet, need only in the time of cleaning plug screw is taken out, can clean the residue in housing again, easy to operate.

[0011]But above-mentioned embodiment is exemplary, is to be this patent to be comprised the restriction of scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses do anyly be equal to change or modify, all fall into the scope that this patent comprises.

Claims

1. upper gear box is by housing, the input assembly, the output assembly forms, the input assembly comprises the input tooth, gearbox two axles, flange, be provided with the axis hole for fit gearbox two axles in the input tooth, flange by bolt-locking on housing, be provided with upper bearing (metal) between flange and input tooth, the output assembly comprises output gear, bearing support, bearing, end cap, nut, flange, the flange spacer, lower housing portion offers the lower central hole with the output gear coaxial inner conductor, close at described lower central borehole jack and be fixed with bearing support, fit is fixed with lower bearing between described bearing support and output gear, one is passed bearing support circumferential hole with the disk shape end cap of indent blind hole by bolt and is fixed on the housing lower end surface, the middle part of output gear is fixed by anti-bits nut, the lower end of output gear is provided with the flange spacer successively, flange, plain cushion, fix by slotted nut and opening latch at last, it is characterized in that: the end between described flange and input tooth is provided with seal arrangement, described seal arrangement comprises oil sealing, back-up ring and spacer, the inner fovea part of described end cap is provided with boss, the lower end surface of described anti-bits nut is provided with the groove with end cap boss coupling, and form an inner chamber at end cap with around anti-bits nut, end cap leads to inner chamber and is provided with the plug screw through hole, plug screw is housed on through hole, the end of plug screw is provided with magnet, also be provided with lower oil sealing between the bottom of end cap and output gear.