CN2118861U

CN2118861U - Rolling furnace grate gear box

Info

Publication number: CN2118861U
Application number: CN 92210305
Authority: CN
Inventors: 张佐君
Original assignee: JINZHOU GEAR FACTORY
Current assignee: JINZHOU GEAR FACTORY
Priority date: 1992-02-29
Filing date: 1992-02-29
Publication date: 1992-10-14

Abstract

The utility model relates to a rolling furnace grate gear box, which is composed of an electric motor 1, a triangular belt wheel speed reducing mechanism, a steel ball conjugant safety device, an evolvent few teeth difference speed reducing mechanism, a double bush cylindrical gear pair speed reducing mechanism and a double bush draw rod output mechanism. The utility model is characterized in that the few teeth difference speed reducing mechanism adopts a pin bush type, and the big transmission ratio is obtained via less parts combined together. The utility model has simple structure, and is suitable to be matched with the rolling furnace grate to use.

Description

Rolling furnace grate gear box

The utility model belongs to mechanical transmission, particularly speed-changing gear box.

Jinzhou vacuum instrument plant had once developed a kind of rolling fire grate, had obtained patent right, but existing gearbox performance parameter can not satisfy the technical requirements of this rolling fire grate.

The purpose of this utility model provides a kind of rolling fire grate gearbox, replaces the intermittently mechanical actuation device of rolling-operation synchronously in the same way as the multiple roll fire grate.

The utility model is mainly by motor, vee-pulley reducing gear, overload protective gear, involute less tooth difference reducing gear, two cover cylindrical gear pair reducing gear and two cover pull bar output mechanism.

Describe in detail with reference to the accompanying drawings:

Fig. 1 is a structural representation of the present utility model, and Fig. 2 is few tooth difference transmission schematic representation.

Rolling furnace grate gear box of the present utility model is by the vee-pulley 2 on the motor 1 that is installed in casing 23 outsides and its axle, and the vee-pulley 3 and the steel ball zygote safety device and interior following three mechanisms composition of the body that is installed in casing 23 and end cap 22 formations that are installed in eccentric shaft 13 right-hand members. One is the involute less tooth difference reducing gear, it comprises the planetary gear 11 on the eccentric position that is installed in eccentric shaft 13, be equipped with bearing pin 8 on it, cover has pivoted housing 9 on the bearing pin 8, be equipped with at fixing end cap 22 and can make pivoted housing 9 make therein the sliding sleeve 10 that circumference rolls, and be installed in the ring gear 12 that is meshed with planetary gear 11 in the body; Another is two cover cylindrical gear pair reducing gears, it by with the shaft gear 14,15 of ring gear 12 coaxial positions and key connecting, and the gear wheel 16 that is meshed with shaft gear 14,15 respectively, 17 forms; The 3rd is two cover pull bar output mechanisms, and it comprises two bearing pins 18,19 that are separately fixed on the gear wheel 16,17, and the two cover pull bars 20,21 that connect with bearing pin 18,19.

So-called steel ball zygote safety device comprises steel ball 4, steel ball dish 5, spring 6, adjusting nut 7, and its detailed construction is referring to the CN90213560.0 patent specification.

Narrate below transmission principle:

The power of motor 1 is finished the first order through vee-pulley 2,3 and is slowed down, and passes to eccentric shaft 13 by overload protective gear (4,5,6, No. 7 parts) again, thereby the few tooth difference speed reducing mechanism of input slows down to finish the second level.

Few tooth difference speed reducing mechanism comprises eccentric shaft 13, planetary pinion 11, ring gear 12 and bearing pin 8, pivoted housing 9 and sliding sleeve 10.Be equipped with four bearing pins 8 on planetary pinion 11, on the fixing a certain circumference of their five equilibriums, four pivoted housings 9 are enclosed within respectively on the bearing pin 8, and four sliding sleeve 10 five equilibriums are fixed on the same circumference on the end cap 22, and assembling is that bearing pin, pivoted housing all are included in the sliding sleeve.

Given in the design:

Throw of eccentric on the eccentric shaft 13 is e, and the distance at bearing pin center and sliding sleeve center also is e;

The external diameter of pivoted housing 9 is d;

The internal diameter of sliding sleeve 10 is D;

Then: D=2e+d.

Eccentric shaft 13 rotates, and drive planetary pinion 11 operations, and planetary pinion 11 both has been subjected to the influence of throw of eccentric, and the restriction that can only roll in fixing sliding sleeve 10 by bearing pin 8 and pivoted housing 9 will be done around eccentric O ₁Relative rotation and around the motion of the nothing of positive heart O revolution planar circumferential, its movement locus is φ=2e.It is the planar circumferential motion of radius that each particle on the planetary pinion 11 also will be done with e.If bearing pin is also regarded as a particle, so, these bearing pin 8 center O ₁' also will do center O ' the be center of circle with sliding sleeve 10, be the planar circumferential motion of radius with e, track also is φ=2e.Because of given D=2e+d in the design, promptly when eccentric shaft 13 turned around, pivoted housing 9 can be made the inscribe pure rolling uniform circular motion in a week just on the inner circumference of sliding sleeve 10, thereby the restriction planetary pinion can only do not have the planar circumferential motion of revolution.12 engagement driving that are subjected to planetary pinion 11 of ring gear, be subjected to the restriction of tooth difference again, rotate (rotation after promptly slowing down) with doing with eccentric shaft 13 meshing compensation in the same way, slow down so finish the second level, and the power after will slowing down passed to the next stage reducing gear---the duplex shaftgear.

The velocity ratio of few tooth difference speed reducing mechanism is:

i＝ (Z ₂)/(Z ₂-Z ₁)

Wherein:

I---velocity ratio

Z ₁---the planetary number of teeth

Z ₂---the number of teeth of ring gear

Two cover cylindrical gear pair reducing gears comprise duplex shaftgear 14,15 and two cover cylinder gearwheels 16,17, and duplex shaftgear 14,15 rotates, and two gearwheels 16,17 that are meshed with it also rotate thereupon, finish the third level like this and slow down.

Two cover pull bar output mechanisms comprise 18,19 and two link rods 20 and 21 of two bearing pins that are installed on two gearwheels 16,17.Two bearing pins 18,19 lay respectively on the symmetrical position of gearwheel center of rotation, promptly are mutually 180 °.Two drawheads are enclosed within respectively on two bearing pins.When two gearwheels rotate simultaneously, drive alternately back and forth operation of two pull bars 20,21, thereby give fire grate transmission of power.

The utility model is simple in structure, makes up mutually with the part of minimum number, obtains desirable big retarding than transmission, satisfies the technical requirements of rolling fire grate.By means of the transmission of this machine, can realize the automatic operation of rolling fire grate, create optimal combustion state, correctly bring into play the various technical performances of novel fire grate, and can receive energy-conservation economizing on coal, reduce flue dust, reduce good social benefits such as environmental pollution.

Embodiment: the number of teeth of the planetary pinion 11 in few tooth difference speed reducing mechanism is 44, and the number of teeth of the ring gear 12 that is meshed with it is 45, and its velocity ratio is i ₁=45/ (45-44)=45/1.Planetary pinion 11 whenever circles, and 12 of ring gears rotate a tooth in the same way.

The number of teeth that the number of teeth of two small gears 14,15 in two cover cylindrical gear pair reducing gears is 15, two big numbers of teeth 16,17 is 73.Its velocity ratio is i ₂=73/15=4.86, resultant gear ratio is i _Always=i ₁I ₂=45 * 4.86=219.

Claims

1, a kind of rolling fire grate gearbox, it comprises motor 1 and the vee-pulley 2 on it that is installed in casing 23 outsides, and the vee-pulley 3 and the steel ball zygote safety installations that are installed in eccentric shaft 13 right-hand members, it is characterized in that in the body that phase shell 23 and end cap 22 constitute, installing following three mechanisms:

1) involute less tooth difference reducing gear, it comprises the planetary pinion 11 on the eccentric position that is installed in eccentric shaft 13, be equipped with bearing pin 8 on it, be with pivoted housing 9 on the bearing pin 8, fixedly on the end cap 22 sliding sleeve 10 that can make pivoted housing 9 do the circumference rolling therein is being installed, and is being installed in the ring gear 12 that is meshed with planetary pinion 11 in the body;

2) two cover cylindrical gear pair reducing gears, it by with the shaftgear 14,15 of coaxial position of ring gear 12 and key connecting, and the gearwheel 16,17 that is meshed with shaftgear 14,15 is respectively formed;

3) two cover pull bar output mechanisms, it comprises two bearing pins 18,19 that are separately fixed on the gearwheel 16,17, and the two cover pull bars 20,21 that connect with bearing pin 18,19.