CN2319625Y

CN2319625Y - Reducer casing of extruder

Info

Publication number: CN2319625Y
Application number: CN 98225919
Authority: CN
Inventors: 王凤霖; 嵇仁武
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-01-23
Filing date: 1998-01-23
Publication date: 1999-05-19
Anticipated expiration: 2008-01-23

Abstract

The utility model relates to a reducer casing of an extruder, belonging to the technical field of the mechanical driving mechanism. A gear is driven and engaged by an input gear shaft. The gear is arranged on an intermediate gear shaft. The utility model is characterized in that an idle wheel is arranged on a rotary shaft; two output gear shafts which are abreast arranged are driven by the idle wheel; the two output gear shafts are arranged in a bearing seat and are arranged in the inner cavity of the reducer casing seat through a bearing supporting shaft. The utility model has simple structure. The length of an output shaft is shortened, which is in favor of processing. Thus the rigidity of the output gear shafts is enhanced to reach the same rotating speed and the same operation direction. The reducer casing of an extruder is suitable for the large power. The output speed is high, which enables the temperature of the extruder to be reduced. Oil can not be leaked, which prevents from the environmental pollution.

Description

The extruder speed reducer

A kind of extruder speed reducer belongs to the mechanical transmission mechanism technical field.

Before the utility model was made, in prior art, being used for the double screw extruder speed reducer all had motor power to be imported by input shaft.With the comparatively approaching driving mechanism of the utility model is to adopt input shaft to cog to drive a gearwheel, and two small gears are installed in the gearwheel, gearwheel small gear coexist external tooth and internal tooth on the wheel blank.Drive two gears on the left and right output shaft simultaneously by internal tooth again, guarantee that left and right output shaft is synchronous, in the same way running.The supporting bearing of input shaft is installed in outside the deceleration block, this structure speed reducer is more suitable to middle-size and small-size extruder, but internal tooth and left output shaft cog, the centre distance of the gear on internal tooth and the right output shaft only may be extruder two screw rod centre distance half, limit the moment of torsion that transmits, can't adapt to high pulling torque.And output shaft is long is difficult to processing, and the rigidity of axle is difficult to guarantee.The easy oil leakage of output shaft two ends, no oil leakage preventing apparatus, therefore in operation process, the pond of driving mechanism oil problem fails to solve always.

The purpose of this utility model is to overcome above-mentioned deficiency, thereby a kind of transmitting torque that can strengthen extruder simple in structure is provided, and improves output shaft rigidity, and can make two same rotating speeds of output shaft, same direction operating extruder speed reducer.

The main solution of the utility model is that full pattern is realized:

The main input gear shaft 1 that adopts is installed in the deceleration block 5, input gear shaft 1 engaging gear 13, gear 13 is installed on the intermediate gear shaft 11, idle pulley 18 is installed in the rotating shaft 16, idle pulley 18 driven

gear axles

26,27,

gear shaft

26,27 is installed in the bearing support 24,29 side by side, and bearing 23 is installed in deceleration block 5 inner chambers, supporting

gear axle

26,27.

Description of drawings:

Fig. 1 is the utility model planar side view;

Fig. 2 is the utility model structural drawing;

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

Input gear shaft 1 is installed in the deceleration block 5, and by bearing 4 supportings, its right-hand member is loaded onto to lead to and covered 3, and logical the lid is equipped with oil sealing 2 on 3, and stifle 7 is also loaded onto in the axle two ends, and deceleration block inwall is installed water-cooling tube 16.Gear shaft 1 engaging gear 13, gear 13 is installed on the intermediate gear shaft 11, and intermediate gear shaft is by the bearing supporting, and dress shaft shoulder packing ring 12, adopts lock washer 10,9 lockings of garden nut, last and stifle 7, stifle 8 matches.Idle pulley 18 is installed in the rotating shaft 16, idle pulley 18 driven

gear output shafts

26,27, and rotating shaft 16 is with bearing 17 by bearing 15 supportings in the rotating shaft 16, and stifle 7 is housed at its two ends and stifle 14 matches.

Gear output shaft

26,27 is installed in the bearing support 24,29 side by side, by bearing 23 supportings, bearing 23 is installed in deceleration block 5 inner chambers, and deceleration block 5 matches with speed reducer top cover 25, and right-hand member is installed garden post roller thrust block 30 on the output shaft, two-way thrust washer 31, adjust piece 32, thrust shaft block 33, axle sleeve 34, and adopting thrust washer 36, garden nut 35 is locked.Fixedly before the output shaft brought forward bearing support 24 oily joint 22 is installed, output shaft outside front end is installed rubber oil sea 21, oil cap 19 before oil thrower ring 20 reaches.Rear bearing, output shaft seat 29 matches with deceleration block 5 and top cover 29, and left thrust shaft block and bonnet 38 are installed on the bearing support 29, and grease proofing back cover 37 is installed in the output shaft rear end, and on top cover 25 breather 28 is installed.

The utlity model has following advantage:

1, the utility model is used for high-power, high rotating speed output, therefore adopts high strength steel to satisfy The requirement of high bending stress, flute profile adopts the garden gear with curved teeth, has reduced contact stress, thereby has carried on the whole The power that height bears utilizes the stressed difference of rotating shaft two fulcrums, and the choose reasonable bearing makes supporting output The spacing of the needle bearing of axle is significantly smaller than the spacing of the block bearing of other axle, has shortened the length of output shaft Degree is beneficial to processing, thereby has improved the output shaft rigidity, reaches the same direction running of same rotating speed, 2, because power and volume ratio that reduction box bears are big, therefore adopt the in-built water composite cooling pipe of deceleration box also Connect same externally mounted fuel tank with cooling device, with reduction machine temperature, reduced wanting reduction box lubricating oil Ask; 3, because at the anti-oil cap of reduction box front output shaft front end installation sleeve, therefore solved the output shafting oil Leakage problem, oil can pass through the passage oil sump tank, has prevented environmental pollution.

Claims

1, a kind of extruder speed reducer, adopt input gear shaft (1) to be installed in the deceleration block (5), input gear shaft engaging gear (13), gear (13) is installed on the intermediate gear shaft (11), idle pulley (18) is installed in the rotating shaft (16), it is characterized in that idle pulley (18) driven gear axle (26), (27), gear shaft (26), (27) are installed in bearing support (24), (29) side by side, bearing (23) is installed in deceleration block (5) inner chamber, supporting gear axle (26), (27).

2, extruder speed reducer according to claim 1 is characterized in that described output shaft (26), (27) front end installation oil thrower ring (20), preceding anti-oil cap (19).

3, extruder speed reducer according to claim 1 is characterized in that described output shaft (26), (27) rear end install grease proofing back cover (37).

4, extruder speed reducer according to claim 1 is characterized in that described deceleration block (5) inwall installation water tank (16).