CN2240315Y

CN2240315Y - Speed changer for electric rotation display table

Info

Publication number: CN2240315Y
Application number: CN 95240560
Authority: CN
Inventors: 方子良
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-26
Filing date: 1995-09-26
Publication date: 1996-11-20
Anticipated expiration: 2005-09-26

Abstract

The utility model relates to a speed changer for a rotary electric show table which is made by using the principle of harmonic gear drive. The utility model is characterized in that the speed changer for a rotary electric show table is composed of an electromotor, a wave generator, a flexible bearing, a flexible wheel, a fixed rigid wheel, a movable rigid wheel, a sliding bearing, etc. By using the utility model, the insufficiencies of the existing transmission with worm wheels and worm screws, such as large volume, low efficiency of mechanical transmission, etc., can be overcome; the utility model has the advantages of simple structure, small volume, light weight, high reduction ratio, high bearing capacity, etc.; the utility model can be used for dynamic show and can be widely used for the decorative design in every emporium, shopping center, hotel, and exhibition hall.

Description

Electronic rotation exhibition booth speed changer

The utility model relates to a kind of speed changer, particularly a kind of electronic rotation exhibition booth speed changer that utilizes the Harmonic Gears technology to constitute.

The speed changer that rotation exhibition booth is in the market adopted generally all is the speed change gears that utilize the transmission principle of worm and gear to form, and rotates by the driven by motor worm screw, comes speed change through worm gear again, make the exhibition booth on request speed change reach slow rotation.This worm and gear speed changing structure, because its gearratio is little, and the speed ratio of exhibition booth is very big, so generally all need what worm gear and endless screw speed changer to be together in series, just can reach speed change request, so just makes structure dote on greatly; Machinery driving efficiency owing to it is lower simultaneously, thereby power output is little, and energy consumption is big, and bearing capacity is poor, generally drags motionless bigger object, as commodity such as automobile, large-scale sculptures; Its slewing range is narrower in addition, the noise height, and service life is shorter, can not satisfy the requirement in market.

The purpose of this utility model is to provide a kind of simple in structure, volume is little, gear ratio is big and bearing capacity is strong electronic rotation exhibition booth speed changer.

The purpose of this utility model realizes by following technical measures.Electronic rotation exhibition booth speed changer, the connecting plate for electric motor that it contains motor and joins with it, parts such as case of transmission, the drive mechanism that it is characterized in that it adopts the Harmonic Gears technology, promptly on motor shaft, be with a wave producer, be provided with flat key between wave producer and the motor shaft, the lower end of wave producer is fixed on the motor shaft by a screw, makes wave producer in axial location; Two measure-alike flexible bearings are installed on the outer ring of wave producer side by side, are separated by back-up ring between two flexible bearings, locate with jump ring at two ends; Flexbile gear also is housed outside flexible bearing, the gear ring that the different numbers of teeth of two sections are arranged on the flexbile gear outer ring, the lower end gear ring is meshed with a fixing wheel just, the upper end gear ring has just been taken turns with an activity and has been meshed, the number of teeth on fixing wheel just and the movable wheel just is respectively greater than the number of teeth of flexbile gear two sections gear ring, fixing wheel just is connected and fixed by screw and case of transmission and connecting plate for electric motor, movable wheel just by one with it movingly sliding bearing come radial location, the sliding bearing upper end has a step to be stuck on the interior step of case of transmission, also recessing on the end face of sliding bearing settles a circle to be used to transmit the steel ball of exhibition booth weight; The movable end face of wheel just has and rotates the connecting hole that the exhibition booth joins, and in addition, a cover plate that prevents to scurry outside the flexbile gear is set also on the upper surface of wave producer, also plays the dustproof effect simultaneously.The utility model adopts the Harmonic Gears technology, and the controlled strain of utilizing flexible member (being flexbile gear) to be produced realizes the transmission or the transmission of power of motion.Its operation principle is: wave producer rotation under flat key drives, because the cylindrical of wave producer is oval, so flexible bearing and flexbile gear are just pushed in the rotation of wave producer, make flexbile gear under the elliptic cam effect of wave producer, produce distortion, the flexbile gear gear teeth of locating at the major axis two ends of wave producer mesh fully with the fixing wheel just and the movable gear teeth of wheel just, the flexbile gear gear teeth at place, minor axis two ends are thrown off fully with fixing wheel just and movable wheel just, and in the zone between major axis of wave generator and minor axis, the flexbile gear gear teeth then are in half engagement (engaging-in) or partly deviate from (nibbling out) state with the fixing wheel just and the movable gear teeth of wheel just, when wave producer rotates continuously, just make engaging-in, engagement, nibble out, throw off these four kinds of situations and constantly change successively, circulation endlessly.Again because the number of teeth difference of flexbile gear two sections gear ring, generally be that the number of teeth that the drive activity has just been taken turns is fixed the number of teeth of wheel just less than driving, be that the epimere number of teeth is less than the lower end number of teeth, and the number of teeth of movable wheel just and fixing wheel just is respectively greater than the number of teeth of hypomere on the flexbile gear, (in order to obtain big speed reducing ratio, general optimal selection is that firm tooth number Duos 2 than the hypomere number of teeth on the flexbile gear respectively), so, when wave producer rotated a week, flexbile gear turned over two tooth angle degree round about, and fixing wheel just is motionless, movable wheel just is under flexbile gear epimere gear ring drives, the same side set of realizing moves, thereby has realized big speed reducing ratio, makes exhibition booth slowly rotation under the drive that activity has just been taken turns.

The utility model compared with prior art, its significant good effect is: (1) adopts Harmonic Gears technology simple in structure to substitute existing worm and gear transmission, and the volume of speed changer is reduced greatly, and weight also alleviates significantly; (2) gearratio is big, and slewing range is wide, can satisfy product requirement easily 0.1～1 rev/min of preliminary election, and this speed changer machinery driving efficiency height, and energy consumption is little; (3) turning moment is big, and load capacity can reach 1 to 10 ton, and running is steady, and noise is low; (4) production cost is low, and handling ease is installed simply, and operation, easy to maintenance is the ideal equipment that commodity are realized Dynamic Display in the present market economy, and the commodity that can be widely used in each emporium, shopping center, hotel and show room are decorateed design.

Concrete structure of the present utility model is provided by the following drawings and embodiment.

Fig. 1 is the overall structure schematic diagram according to the electronic rotation exhibition booth speed changer that the utility model proposes.

Fig. 2 is the planform schematic diagram of wave producer in the speed changer.

Fig. 3 is the diagrammatic sketch of bowing of Fig. 2.

Fig. 4 is a flexbile gear and fixing wheel just and the movable mesh schematic representation of wheel just in the speed changer.

Is example below in conjunction with accompanying drawing with the speed changer of about 300 kilograms of load-carryings, 0.38 rev/min of rotating speed, the utility model is done describing in further detail.

Referring to Fig. 1, electronic rotation exhibition booth speed changer according to the utility model making, it is made up of motor 1, connecting plate for electric motor 2, case of transmission 3, wave producer 7, flexible bearing 8, flexbile gear 11, fixing wheel 12 just, movable just wheel 13, sliding bearing 14, and it is the secondary transmission that the complex wave form is adopted in its transmission.The rotating speed of motor 1 is 1400 rev/mins, and the material of wave producer 7 is 45 ^#Steel, its endoporus matches with motor output shaft 4, the keyway that endoporus has also axially that 4mm is wide, 1mm is dark, be used to place flat key 5.See Fig. 2 and Fig. 3, the cylindrical of wave producer 7 is ellipse shape, its major axis is 46mm, minor axis is 43.98mm, and is fixing by a screw 6 in the lower end when wave producer 7 and motor 1 socket, makes wave producer 7 axial location, flexible bearing 8 is two, model is 809KAT2, and they are installed in respectively on the outer ring of wave producer 7, is separated by a metal collar 9 between two flexible bearings 8, two ends are fixing by jump ring 10, the material of flexbile gear 11 is 30 chromium manganese silicon, and the internal diameter of flexbile gear 11 is Φ 60mm, and the outer ring is provided with the gear ring of the different numbers of teeth of two sections, the number of teeth of epimere gear ring is 118, the tooth top garden is Φ 63.16mm, and the number of teeth of lower end gear ring is 120, and the tooth top garden is Φ 63.20mm.Referring to Fig. 4, the hypomere gear ring of flexbile gear 11 is meshed with the fixing internal tooth of wheel 12 just, and the epimere gear ring is meshed with the movable 13 hypomere internal tooths of wheel just, and the fixing 12 internal tooth numbers of teeth of wheel just are 122, and there is step the lower end, has four connecting holes on the step; The movable 13 lower end internal tooth numbers of teeth of wheel just are 120, also there are step and connecting hole in the upper end, just have a groove along periphery in the step lower surface of wheel 13 in activity, sliding bearing 14 is positioned at the step below of movable wheel 13 just, and inner surface and movable wheel 13 just are closely movingly, also have a circle groove in the upper surface of sliding bearing 14 and with groove correspondence position that the step lower end has just been taken turns in activity, be provided with a circle steel ball 15 between two grooves, sliding bearing 14 upper ends also have a step, the thickness of step is not less than 4mm, and step is stuck on the interior step of case of transmission 3.The lower end of case of transmission 3 and fixing wheel just 12 at the step place and connecting plate for electric motor 2 be connected and fixed by a screw 16, connecting plate for electric motor 2 is also fixed by screw with motor 1.In addition, also have a cover plate 17 on the upper surface of wave producer 7, it both can prevent flexbile gear 11 outer scurrying, and can prevent dust again.

This electronic rotation exhibition booth speed changer can be fixed on the support 18 when concrete the use, and it not only can support speed changer, makes it to go slick, and also as the carrier of rotation exhibition booth weight, rotation exhibition booth 19 is fixed on the end face of movable wheel 13 just by screw simultaneously.

Claims

1, a kind of electronic rotation exhibition booth speed changer, motor connecting plate (2), case of transmission (3) that it contains motor (1) and joins with it, it is characterized in that on motor shaft (4), being with a wave producer (7), also be provided with a flat key (5) between wave producer (7) and the motor shaft (4), wave producer (7) by a screw (6) axial location on motor shaft (4); Back-up ring (9) is arranged being equipped with on the outer ring of wave producer (7) between two measure-alike flexible bearings (8), two flexible bearings (8), two ends are provided with the jump ring (10) that is used to locate, flexbile gear (11) is housed outside flexible bearing (8), the gear ring that the different numbers of teeth of two sections are arranged on flexbile gear (11) outer ring, the lower end gear ring is meshed with fixing wheel (12) just, the upper end gear ring is meshed with movable wheel (13) just, fixing wheel (12) just and movablely just take turns the number of teeth on (13) respectively greater than the number of teeth of flexbile gear (11) two sections gear ring; Fixing wheel (12) just is connected and fixed by screw (16) and case of transmission (3) and connecting plate for electric motor (2), movable wheel (13) just is by movingly sliding bearing (a 14) location with it, and sliding bearing (14) upper end has a step to be stuck on the interior step of case of transmission (3); Have groove on the end face of sliding bearing (14), settle a circle to be used to transmit the steel ball (15) of exhibition booth weight, movable (13) end face of wheel just has and rotates the connecting hole that the exhibition booth joins; In addition, a cover plate (17) that prevents to scurry outside the flexbile gear (11) also is set on the upper surface of wave producer (7).

2, electronic rotation according to claim 1 exhibition booth speed changer is characterized in that the gear ratio hypomere gear ring number of teeth few 2 of flexbile gear (11) epimere gear ring.

3, electronic rotation according to claim 1 and 2 exhibition booth speed changer, upward the hypomere gear ring number of teeth is big by 2 than flexbile gear (11) respectively to it is characterized in that the number of teeth of movable wheel (13) just and fixing wheel (12) just.

4, electronic rotation according to claim 1 and 2 exhibition booth speed changer is characterized in that the step thicknesses of sliding bearing (14) is not less than 4 millimeters.

5, electronic rotation according to claim 3 exhibition booth speed changer is characterized in that the step thicknesses of sliding bearing (14) is not less than 4 millimeters.