CN102295140A - Mining scraper conveyor speed reducer - Google Patents

Abstract

The invention aims to provide a mining scraper conveyor speed reducer with small peripheral force acting on a sun wheel and high driving carrying capacity. The mining scraper conveyor speed reducer comprises an input shaft and an output shaft, wherein spiral bevel gear pair transmission, cylindrical gear pair transmission and planet gear pair transmission are successively carried out from the input shaft to the output shaft; and in a planet gear pair, the number np of planet wheels is equal to 4.

Description

The mine flight conveyer retarder

Technical field

The present invention relates to the mine flight conveyer retarder on a kind of slat conveyer of carrying that is used to mine.

Background technology

Existing mine flight conveyer retarder: SC-MK-40 slat conveyer retarder is seen Fig. 1, and it is by one-level spiral bevel gear transmission+primary cylinder gear transmission+primary planet pinion transmission.Transmitted power P=400KW, motor speed are n=1481/738r/min, transmitting ratio i=40.7.In the planetary wheel auxiliary driving structure, the tooth number Z of internally toothed annulus 1 _b=73, m=10.The tooth number Z of satellite gear 2 _g=22, m=10.The tooth number Z of sun wheel 3 _a=26, m=10.Satellite gear 2 is three, is distributed on the pinion carrier 4.

Input torque $T_{}$ ${}_1=9550\×\frac{P}{n}=9550\×\frac{400}{738}=5176N\·m$

Output torque T ₂=T ₁* i * η=5176 * 40.7 * 0.98 ³=198274Nm ≈ 198KNm

η=0.98 wherein ³=0.94 is driving efficiency

In the intrinsic epicyclic gear transmission, adopt the satellite gear number n _p=3, transmitting ratio

Z _a=26, Z _g=22, Z _b=73, m=10.Wherein, satellite gear number of teeth Z _g=22＜sun wheel number of teeth Z _a=26, not too reasonable, satellite gear is stressed to be reverse load, and sun wheel is stressed to be pulsating load.

Original design reaches the torque T on the sun wheel _a=T ₁* i * η=5176 * 10.327 * 0.98 ²=51335Nm

Reach the torque on the sun wheel gear teeth $T=\frac{\mathrm{Ta}}{\mathrm{np}}\×\frac{\mathrm{Zg}}{\mathrm{Za}}\×k_p=\frac{51335}{3}\×\frac{22}{26}\×1.15=16650N\·m$

Then act on the circumferential force on the solar wheeling tooth $F_t=\frac{2T}{\left(d\right)a}=\frac{2\×16650\×1000}{260}=128076N\≈128\mathrm{KN},$

K wherein _p=1.15-load unbalance factor, (d) _a-sun wheel reference diameter

As seen, act on circumferential force F on the solar wheeling tooth _t≈ 128KN is bigger, and load-carrying capacity is little.

Summary of the invention

It is less to the purpose of this invention is to provide a kind of circumferential force that acts on the sun wheel, the mine flight conveyer retarder that the load-carrying capacity of transmission is higher.

This mine flight conveyer retarder comprises input shaft, output shaft, input shaft to output shaft successively through spiral bevel gear auxiliary driving, cylindrical wheel auxiliary driving, planetary wheel auxiliary driving, in the planetary wheel pair, the satellite gear number n _p=4.

Beneficial effect of the present invention: adopt four satellite gears, reach the torque T on the sun wheel _a=T ₁* i * η=5176 * 10.174 * 0.98 ²=50575Nm

The torque that reaches on the sun wheel gear teeth is:

$T=\frac{\mathrm{Ta}}{\mathrm{np}}\×\frac{\mathrm{Zg}}{\mathrm{Za}}\×k_p=\frac{50575}{4}\×\frac{24}{24}\×1.15=14540N\·m$

Then act on the circumferential force on the solar wheeling tooth $F_t=\frac{2T}{\left(d\right)a}=\frac{2\×14540\×1000}{240}=121166N\≈121\mathrm{KN}.$

Therefore, after we adopted four satellite gears, the circumferential force that acts on the sun wheel was smaller, so improve gear-driven load-carrying capacity.

Above-mentioned mine flight conveyer retarder, the pinion carrier of described support satellite gear comprise coaxial Zuo Banpan and right half dish, are welded on four joint pins between Zuo Banpan and right half dish, are welded on the closing panel at the endoporus place of a left side half dish.Preferably, it comprises also and is welded on four gussets between Zuo Banpan and right half dish that any gusset improves supporting rigidity between two satellite gears.The assembly planetary carrier that employing is welded into is compared with integral planet carrier, simplified structure, simplifies technology, has material-saving, energy-conservation characteristics.When input speed n≤1800r/min, need not carry out static balance.

Description of drawings

Fig. 1 is existing mine flight conveyer retarder scheme drawing.

Fig. 2 is a planetary wheel auxiliary driving structural representation in the existing mine flight conveyer retarder.

Fig. 3 is a planetary wheel auxiliary driving structural representation of the present invention.

Fig. 4 is a pinion carrier scheme drawing of the present invention.

Fig. 5 is that Fig. 4 is a left view.

The specific embodiment

Shown in Fig. 3 (with reference to figure 1,2), in the planetary wheel auxiliary driving structure, the tooth number Z of internally toothed annulus 1 _b=72, m=10.The tooth number Z of satellite gear 2 _g=24, m=10.The tooth number Z of sun wheel 3 _a=24, m=10.Satellite gear 2 is four, is distributed on the pinion carrier 4.Adopt the satellite gear number n _p=4, transmitting ratio

Now adopt the satellite gear number n _p=4, Z _a=24, Z _g=24, Z _b=72, m=10, transmitting ratio

Structure is the compactest, and layout is the most reasonable, improves the load-carrying capacity of transmission simultaneously.

Referring to the pinion carrier 5 of the support satellite gear shown in Fig. 4,5 comprise a coaxial left side partly coil 6 and the right side partly coil 7, be welded on four joint pins 8 that are used for the suit satellite gear between Zuo Banpan and right half dish, be welded on the closing panel 9 at the endoporus place of a left side half dish, be welded on four gussets 10 between Zuo Banpan and right half dish, any gusset 10 is between two satellite gears 11 that are sleeved on the joint pin, to increase supporting rigidity.

Claims (3)

1. the mine flight conveyer retarder comprises input shaft, output shaft, input shaft to output shaft successively through spiral bevel gear auxiliary driving, cylindrical wheel auxiliary driving, planetary wheel auxiliary driving, it is characterized in that: in the planetary wheel pair, adopt the satellite gear number n _p=4.

2. mine flight conveyer retarder as claimed in claim 1, it is characterized in that: the pinion carrier of described support satellite gear comprises coaxial Zuo Banpan and right half dish, be welded in four joint pins between Zuo Banpan and right half dish, be welded on the closing panel at the endoporus place of a left side half dish.

3. mine flight conveyer retarder as claimed in claim 2 it is characterized in that: further comprising and is welded on four gussets between Zuo Banpan and right half dish, and any gusset is between two satellite gears.

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