CN2046950U

CN2046950U - Z-type table-roller speed-reducing device

Info

Publication number: CN2046950U
Application number: CN 88221198
Authority: CN
Inventors: 余铭; 任乔圭
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-12-15
Filing date: 1988-12-15
Publication date: 1989-11-01

Abstract

The utility model relates to an improved new design in view of some problems caused by the manufacture and use of the Z-type table-roller speed reducer of the billet caster whose size is below 150 mm*150 mm in China. The design comprises a drive speed-reducing part and a table-roller supporting seat part which are both independent. The drive speed-reducing part and the table-roller supporting seat part are integrated by the hollow outputting shaft sleeves of the drive speed-reducing parts installed on the shaft extension of the table-roller supporting seat. The drive speed-reducing parts comprise an involute, few teeth difference plane motion and gear reduction mechanism and a chain-drive mechanism. The box body of the new design is horizontally divided into three parts. The entire plain bearing holes are through holes. The independent table-roller supporting seat uses two tapered roller bearings to support the main shaft. The table-roller supporting seat also uses a left oil-mixing plate and a right oil-mixing plate arranged on the table-roller supporting seat to make the lubricating-oil to lubricate the bearing. The design not only improves the performance of process and assemblage of the products but also changes the bad states of the regular burnout of a motor during using the z-type table-roller speed-reducing device, difficult repair and short service life.

Description

Z-type table-roller speed-reducing device

The utility model relates to the shaft-mounted roller-way retarder of Z-shaped single driving that a kind of deceleration part is made up of involute less tooth difference planar motion mechanism and chain drive.

So-called roller-way retarder refers to the retarder of transmission roller channel on the continuous casting that is used to drive steel or the product production lines such as tubing and sheet material.For the roller-way retarder that uses under the hot environment, be subjected to the influence of section bar high temperature intense radiation for fear of drive motor, the mounting point of motor always is designed to and is driven the roller-way decentraction, but with its descend a sizable segment distance shape such as Z word.At present domestic and international seen this kind retarder, be the transmission of parallel axes involute cylindrical gear, roller-way retarder especially for continuous casting, because required velocity ratio is bigger, so need externally-engaged cylindrical gear transmission more than three grades can satisfy the requirement of aspects.But still there is following outstanding shortcoming in widely used this kind retarder (transmission sketch such as Fig. 1) in producing at home at present though be introducing product: (1) because on the structural design, processing and to install and remove manufacturability bad.Thereby make and keep in repair all inconvenient.(2) because roller bearing is subjected to the strong influence of high temperature, cause lubricating grease to be dried rapidly, its result causes that bearing is stuck not to be changeed, and therefore often burns motor.For above-mentioned reasons, on the one hand will make manufactory be difficult to reduce cost, and then make many users influence production on the other hand and maintenance difficult causes very considerable economic loss because of hazard rate is high.Do not find at present the relevant patent documentation of this product as yet, rarely seen product (Fig. 1) that has only domestic a few family factory to manufacture and design with reference to external introducing product.

Main purpose of the present utility model is the several of main problems of the present following billet casting machine of domestic widely used 150mm * 150mm of solution with existence in Z-shaped roller-way retarder manufacturing and the use.Replace existing product with the utility model, thereby solve the unsolved for many years difficult problem of numerous users in domestic manufactory and the metallurgical system.

The utility model is formed (seeing Fig. 2 and Fig. 3) by independently driving deceleration and roller-way bearing two large divisions separately.Its main feature has been to propose to use a kind of existing new technology and the new assembled scheme of conventional art and the special adaptations design of some concrete structure in recent years.

Deceleration part of the present utility model has been used a kind of new involute less tooth difference transmission principle that the eighties occurs.Because domestic many technician also are unfamiliar with, so need to do simple the introduction.Figure 4 shows that the transmission principle figure of this deceleration part, its core is that a pair of N type involute less tooth difference inside engaged gear by the internal gear outputting power is paid.Power is by eccentric shaft 47 input, and through placing the external gear 28 on the eccentric shaft and being engaged with and with internal gear 27 that output shaft links power being reached output shaft 36, input shaft and output shaft are concentric.The external gear kink is on the eccentric journal of the input shaft that departs from a certain distance of input shaft center line.The external gear end face is settled two pins, and the center of pin is identical to the distance of this Gear center.And its line is by this Gear center.Also vertical interior edge face is symmetrical in wherein to feel at ease and puts two identical pins on the case lid.The distance at pin center to case lid center is identical with the former.The end of exposing of each pin all puts a slide block 29.Between external gear 28 and case lid 43, place a control panel 31 (Fig. 5) with microscler vertical slot, the gear and the pin on the case lid of end cover top slide block snap in the notch of control panel alternately, when behind eccentric shaft 47 input motions, external gear is just done the planar circumferential motion around input (output) axis.The same with traditional little tooth difference speed reducer.Owing to exist the number of teeth poor between external gear and the internal gear that is meshed, thereby make internal gear produce retarded motion and through being bearing in output shaft 36 and the equidirectional output of input shaft on the casing.The difference of this reducing gear and usually being seen few tooth difference transmission is that its input end driving gear 28 does plane motion and do not do planetary motion.It can be around the axis rotation of self in movement process.This reducing gear can realize that the size of velocity ratio depends on the number of teeth of two-wheeled and the size of difference thereof.The number of teeth is few, and number of teeth difference greatly then velocity ratio is less, otherwise the number of teeth is many, and number of teeth difference is little, can realize bigger velocity ratio.Velocity ratio is more satisfactory between 30-80.Velocity ratio calculates quite simple, and establishing velocity ratio is U, and the external gear number of teeth is Z ₁, the internal gear number of teeth is Z ₂, then get U=Z ₂/ (Z ₂-Z ₁).

Driving deceleration part of the present utility model is by drive motor, and involute less tooth difference plane motion reducing gear, velocity ratio are 1 chain drive three parts composition.Its concrete structure is described below (Fig. 6):

Place the drive motor 48 of below to put together on the case lid 43, the shaft extension that has key 33 is inserted in hollow shaft 47 holes of reducing gear.Hollow shaft with two bearings 44 and 41 freely-supporteds on case lid 43 and output shaft 36, setting-up eccentricity bearing 42 on its middle part external cylindrical surface.There is linking bond 32 this brearing bore and hollow shaft external diameter cooperation place.Suit external gear 28 on the outer ring of capacity eccentric bearing, and with by means of bolt and output shaft the ring gear 27 that is incorporated into being meshed.Be symmetrical in center own on external gear and the cover respectively and respectively settle two power transmission pins 30, the equal suit slide block 29 of its overhanging end, and it is snapped on the control panel 31 that places between cover and external gear end face to become in the vertical slot of 90 ° of layouts.The output shaft that has a key 26 is inserted through in the hole that bearing 25 and 35 is bearing in the sprocket wheel hollow shaft 37 on the casing 17.Sprocket wheel 39 is that interference fit connects with hollow shaft.The sprocket wheel 16 that output terminal is identical with the former also is bearing on the casing through the hollow shaft 19 and the

bearing

14 and 18 of employing interference fit.Link with bush roller chain 24 between sprocket wheel.Each bearing all utilizes end cap or additional rubber oil sea to seal.Settle the pin 23 that has air hole on the casing.Input end at hollow shaft 47 is provided with the eccentric balancing blocks 45 that links with it with key 46.

Track bearing part concrete structure of the present utility model is as follows:

With the roller-way supporting spindle 8 of conical shaft extension by two bearings 7 and 11 and

additional bearing lid

6 and 13 it is bearing on the bearing 12.The middle part of main shaft is provided with left and right sides oil mixing board 10.Macropore and Fang Gai are arranged at the bearing top, output terminal adopted by cover 6 and the round cover board 4 and the cover that press solidly thereon install to the maze type seal arrangement that the flanged (FLGD) lasso 5 in outer end on the main shaft is formed.

First part and second portion (being bearing) are inserted in by the hollow shaft with the former output terminal sprocket wheel on the latter's the shaft extension and through flat key 20 and special screw 21 and join together.And roller-way and main shaft are by installing to its cover that conical shaft is stretched and linking by means of flat key 3 and pressing plate 2 and bolt 1.This machine has also been settled two

lifting bolts

9 and 15 and plug cock 40.

Have following advantage owing to taked a series of measures, the utility model to compare in design with existing product:

1, owing to adopts independently novel few tooth difference transmission and chain-driven combination, and the casing of deceleration part become independent parts separately with the roller-way susceptor design, and cancelled the blind hole on the deceleration box, improved the technology capability and the assembly process process of parts such as casing, roller-way bearing, can reduce cost.

2, parts such as gear, chain, bearing are all used thin oil lubricant, have improved lubricating condition.

3, the output terminal of roller-way bearing and deceleration part all adopts tapered roller bearing, and all be adjustable under bigger gap and use, the needs that not only adapted to high ambient conditions also can not produce harmful effect to the gear transmission of deceleration part simultaneously.

4, owing to adopted the combining unit design, the field maintenance easy to use of horizonally split casing and shaft-mounted structure is repaired.

5, roller-way bearing main shaft output terminal adopts new maze type sealing configuration to improve the sealability of bearing.

Because the utility model has fundamentally changed original design at the deadly defect of existing product.Thereby final long-pending 1 utmost point effect is, make this product not only be convenient to make and assembling, and, prevent stuck then avoid often burning the working life that motor improves the retarder complete machine simultaneously because of guaranteeing the lubricated of roller-way supporting bearing.

Claims

1, a kind of by the driving reducing gear of band direct-coupled electrical machinery and the Z-shaped roller-way retarder of the single driving that the roller-way seat part is grouped into, deceleration part is by hollow input shaft and output shaft, reduction gear, sprocket wheel and chain, casing and case lid, basic parts such as block bearing are formed, roller-way bearing part is by main shaft, bearing, basic part such as block bearing and oil mixing board is formed, it is characterized in that the driving deceleration of this retarder and roller-way bearing two large divisions are parts independently separately, and its connection form is for fixing on the main shaft that drives deceleration part and install to the roller-way bearing by the hollow output shaft cover and with special screw, deceleration part is combined by gear with small teeth difference driving mechanism and chain drive, gear with small teeth difference mechanism is that a pair of N type inside engaged gear is paid, external gear is installed in hollow input shaft middle part by a capacity eccentric bearing, and be bearing in case lid respectively in the two ends of input shaft and insert on the output shaft in the hollow sprocket wheel axis hole with two bearings, the hollow shaft input end is equipped with eccentric mass, internal gear is a gear ring of making separately, flange handle with bolt and output shaft is integrated, be symmetrical in center own on external gear and the cover respectively and respectively settle two power transmission pins, the equal suit slide block of its overhanging end, and it is snapped on the control panel that places between cover and external gear end face to become in the vertical slot of 90 ° of layouts, chain drive is made up of chain and the pair of sprocket that is sleeved on the hollow shaft and be bearing on the casing with two bearings respectively, a pin is installed in the output sprocket below on the casing, its overhanging end inserts in the pin-and-hole of roller-way bearing end face, casing along continuous straight runs subdivision, roller-way seat part are divided into the roller-way main shaft and prop up on bearing by two bearing cartridges.Its middle part has oil mixing board, output terminal to adopt the maze type sealing.

2, retarder according to claim 1, it is characterized in that driving deceleration part is the chain drive composition that involute less tooth difference plane motion gear mechanism and velocity ratio equal 1.

3, retarder according to claim 1 and 2, it is characterized in that two sprocket wheels have identical structure and size, and equal hollow shafts by interference fit joint with it and place the rolling bearing at two ends to be bearing on the casing.

4, retarder according to claim 1 and 2 it is characterized in that the casing horizonally split that drives deceleration part becomes three parts, and the whole bearing holes on the casing is through hole.

5, retarder according to claim 1 and 2 is characterized in that the pin that install the output sprocket below has the air hole that intersects in length and breadth.

6, retarder according to claim 1 and 2, the structural type that it is characterized in that the maze type sealing of roller-way bearing main shaft is flanged (FLGD) axle sleeve in outer end of suit on the main shaft, presses solidly a circular cover that the middle part is with holes on the bearing cap in the apertura lateralis.

7, retarder according to claim 1 is characterized in that independently two bearings of roller-way bearing employing are the circular cone roller bearing, and two blades of oil mixing board are oblique opposite left and right sides blade.