CN2204293Y

CN2204293Y - Middle-shaft supporting device for screw transporting machine

Info

Publication number: CN2204293Y
Application number: CN 94216881
Authority: CN
Inventors: 何庆森
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-13
Filing date: 1994-07-13
Publication date: 1995-08-02
Anticipated expiration: 2004-07-13

Abstract

The utility model adopts a ball bearing and a labyrinth seal ring, and can align. An aligning part is composed of a support frame, a bearing outer casing with an oil groove, and an aligning plate which is connected with the support frame and the bearing outer casing with an oil groove by bolts and has a side gap and a hole gap; a sealing part is composed of a rotating baffle ring, a locking ring, rubber rings, rotating labyrinth rings, fixing labyrinth rings, a baffle ring, and lateral fixing labyrinth rings, wherein, the rotating baffle ring and the locking ring are tightly fixed with the bearing on both sides; the rubber rings are sheathed outer the rotating baffle ring and the locking ring and have oil passing holes on the radial end faces; the rotating labyrinth rings are tightly matched with a middle shaft on both sides; the fixing labyrinth rings are tightly hooped outside the rubber rings; labyrinth grooves are arranged between the fixing labyrinth rings and the rotating labyrinth rings; the baffle ring is welded with one side of the middle shaft; the lateral fixing labyrinth rings are connected with bearing outer casings of the fixing labyrinth rings, and have oil outlet grooves among the baffle ring and a middle shaft on the other side. The utility model increases the running rate and the service life of a screw conveyer.

Description

Middle-shaft supporting device for screw transporting machine

A kind of bearing set of conveyor screw tween drive shaft belongs to the material handling machinery technical field.

The conveyor screw tween drive shaft is that the bearing set of bolster generally adopts plain bearing, bush material how cylinder iron with Babbitt matal, leakproofing material is the felt bar, its elevation profile as shown in Figure 1.Wherein, the 1st, (bilateral projective table type) tween drive shaft, the 2nd, alloy bearing shell, the 3rd, felt seal ring, the 4th, bearing shell shell, the 5th, support.Conveyor screw is all combined by the more piece spiral, influenced by processing, installation, helical centre is the broken line running, thereby tween drive shaft is beated waving all the time when complete machine turns round, it not only causes accidents such as tie bolt cuts off, the bolt hole mill is big, spiral twists off, shell is worn out, and can make generation periodicity gap between axle and bearing shell, axle and the seal felt, and cause material to enter in the bearing shell by the seal felt gap, make bearing shell and seal felt accelerated wear test.Especially because tween drive shaft is contained in the leak free shell, and the tween drive shaft district does not have spiral, material is by the promotion of spiral leaf, the operation of piling up, flow.Material often is higher than helical centre in the tween drive shaft district, tween drive shaft is embedded in material such as the cement turns round, like this, will make enter behind the material abrasion sealing device watt in, after lubricating oil in material and the bearing shell forms lapping compound, bearing shell also will sharply damage.Increase thereby the operation factor that makes equipment is low, fault rate is high, electric energy loss is also corresponding with service expenditure.This shows that the aligning and the sealing problem that solve the tween drive shaft bearing set also become the key issue that can conveyor screw effectively turn round.

The purpose of this utility model is to provide a kind of friction little, but aligning and seal tight conveyor screw tween drive shaft bearing set.

Of the present utility model being characterised in that: it is a kind ofly to support with ball bearing of main shaft, to the material in the motion with labyrinth packing and between bearing shell and support, connecting the tween drive shaft bearing set of an aligning plate, its aligning partly be one by suspended scaffold 6, the bearing shell 7 of band oil groove and its side direction and suspended scaffold 6,7 on bearing shell side clearance is arranged and with two respectively it and support 6,8 on the bolt that bearing shell 7 links up is made up of the trapezoidal aligning plate 9 in radial hole gap, its sealing and supporting part are by two its inner rings of cover and (one-sided projective table type) tween drive shaft 10 flush fits, outer ring and bearing shell 7 transition fit and its are positioned at the ball bearing of main shaft 11 of the relative installation of oil passage of self side, be positioned at the one side and with tween drive shaft 10 friction tight rotation baffle rings 12, be positioned at its opposite side and with ball bearing of main shaft 11 locking after the binding ring 13 of self-locking again, be placed in respectively and rotate baffle ring 12, outer and its radial end face of binding ring 13 has the rubber seal 14 of oil passage, lay respectively at the both sides and the rotation labyrinth 15 friction tight of tween drive shaft 10 with it, lock ring outside rubber seal 14 and with tween drive shaft 10, rotate labyrinth 15 and rotate the fixedly labyrinth 16 that the labyrinth type oilway is arranged between baffle ring 12 or the binding ring 13, be positioned at tween drive shaft 10 an end and with baffle ring 17 of its solid weldering and with fixing labyrinth 16, bearing shell 7 usefulness bolts link and are made up of the lateral fixation labyrinth 18 that goes out oil groove respectively and between the other end of baffle ring 17 and tween drive shaft 10, and its longitudinal section is asked for an interview Fig. 2.

In order in conjunction with the embodiments the utility model to be done detailed describing below, now as follows employed accompanying drawing title of present specification and numbering brief introduction:

Fig. 1: the tween drive shaft bearing set longitudinal section that adopts plain bearing;

Fig. 2: the longitudinal section of the tween drive shaft bearing set that the utility model proposes;

Fig. 3: the left side view of the tween drive shaft bearing set that the utility model proposes;

Embodiment:

Ask for an interview Fig. 2～3.The 19th, the apply lubrication oil pipe.Its bearing shell 7 and tween drive shaft 10 are fixing with one heart, can not aligning.Utilize the side clearance and the interporal lacuna of trapezoidal aligning plate 9, make tween drive shaft 10 swings reach the purpose of aligning.When the swing of the assembly of tween drive shaft 10, utilize the above-mentioned gap just can be, and the bolt hole of 9 four jiaos of trapezoidal aligning plates can limit tween drive shaft 10 again and do big radial runout, thereby guarantee that helical centre is constant substantially by support 6 suspention countershaft assemblys swings.Respectively grind 4 circular holes in a side of ball bearing of main shaft 11, two bearing holes are installed the formation grease channel relatively.Respectively open 4 holes at the radial end face of rubber seal 14.Oil nozzle 20 is housed on bearing shell 7.Lubricating oil is squeezed in the bearing shell 7 by fuel filler pipe 19, oil nozzle 20,8 semicircle orifices that enter ball bearing of main shaft 11 by oil groove flow in the bearings again, and 4 holes from the radial end face of rubber seal 14 enter at the maze trough that rotates labyrinth 15 and fixedly form between the labyrinth 16 again.This maze trough has 4 along the circle distribution of tween drive shaft 10.Tween drive shaft 10 both can form stable oil film to prevent entering of material through behind the aligning in maze trough; can reduce the damage of attachment bolt 8 and spiral 21 again; simultaneously also protect rubber seal 14, stoped releasing and evaporating of lubricating oil, prevented the dry grinding of tween drive shaft 10.

Produce and use proof: its operation factor can reach 95%, and fault rate descends, and power consumption decline 20%, maintenance capacity and spare parts consumption amount also descend greatly, need not change accessory in 1～2 year.

Claims

1, a kind of bearing set of conveyor screw tween drive shaft, contain bearing, bearing shell, support, seal ring and corresponding auxiliary, it is characterized in that: it is a kind ofly to support with ball bearing of main shaft, to the material in the motion with labyrinth packing and between bearing shell and support, connecting the tween drive shaft bearing set of an aligning plate, its aligning partly is by suspended scaffold (6), the bearing shell (7) of band oil groove and its side direction and support (6), between bearing shell (7) side clearance is arranged and with two respectively it and support (6), have the aligning plate (9) in radial hole gap to form between the bolt (8) that bearing shell (7) links up, its sealing and supporting part are by two its inner rings of cover and (one-sided projective table type) tween drive shaft (10) flush fits, outer ring and bearing shell (7) transition fit and its are positioned at the ball bearing of main shaft (11) of the relative installation of oil passage of self side, be positioned at ball bearing of main shaft (11) one sides and with the friction tight rotation baffle ring of tween drive shaft (10) (12), be positioned at ball bearing of main shaft (11) opposite side and with its locking after the binding ring (13) of self-locking, be placed in respectively rotate baffle ring (12) and binding ring (13) outward and its radial end face have the rubber seal (14) of oil passage, lay respectively at tween drive shaft (10) both sides and rotation labyrinth friction tight (15) with it, lock ring outside rubber seal (14) and with tween drive shaft (10), rotate labyrinth (15) and rotate the fixedly labyrinth (16) that the labyrinth type grease channel is arranged between baffle ring (12) or the binding ring (13), be positioned at tween drive shaft (10) one ends and with baffle ring (17) of its solid weldering and with fixing labyrinth (16), bearing shell (7) links with bolt (8) and respectively and have the lateral fixation labyrinth (18) of oil discharge passage to form between the other end of baffle ring (17) and tween drive shaft (10).