CN88102290A

CN88102290A - The motor of band gear

Info

Publication number: CN88102290A
Application number: CN88102290.XA
Authority: CN
Inventors: 海基·塔潘尼·科伊维科
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-04-16
Filing date: 1988-04-16
Publication date: 1988-11-02
Also published as: CA1295649C; CN1009692B

Abstract

Reduction gearing (6) is fixed tightly on the main body (1) of the motor of being with gear, and motor stator is to be fixed tightly on the detachable electronic section (13) of main body.The power shaft (15) that motor rotor (7) is connected to gear upward and through power shaft stretches out on the concentric output shaft (20).Be mounted in basically in the bearing (3,4) near the end face of housing (1,13) according to output shaft of the present invention (20).One end of output shaft is that this flange is mounted near in the bearing (3) of housing periphery by flange female cap (2) formation of gear.What slip gear this gear can be realized by.

Description

The present invention relates to a kind of mechanical actuator, relate to a kind of motor more precisely with gear.

Motor and gear and their combination are often as the Continuous Drive device and as the revolution number of turns of an axle of control and the actuator of angle of revolution.In the present invention, this combination also comprises many transducers and control circuit.

Known this combination is normally assembled by available device, such as direct current or alternating current motor, and various gears and sensor unit and control circuit part.This combination will comprise many bearings then, shaft coupling, erection joint between the each several part and cable.Therefore adopt the assembly of this pattern the various problems that repeat will occur, particularly because the change of fixture and size for the designer.This also just causes bringing all difficulties aspect the design and installation of various devices included in the assembly of this pattern and structure structure.In addition, when requiring to have the favorable rigidity structure, often cause complex structure in the design of the complexity of mechanical aspects in the prior art.Therefore, the assembly device of this pattern use and maintenance aspect be not only benzene heavily but also when taking a lot of work, and this will cause the main burden of economic benefit aspect in the mill.

In No. 26230, Finnish patent, introduced the assembly of a kind of motor and gear, wherein can change in order to change its gear parts of gearratio.Driven device is to be connected on the axle of motor one end.

The purpose of this invention is to provide a kind of assembly improved and simple in structure that comprises a motor and a gear, the structure of this assembly is firm, is convenient to maintenance and is applicable under many kinds of conditions of work use.

According to the present invention, a kind of motor with gear, wherein the standing part of reduction gearing is to be fixed tightly on the standing part of main body, this main body is made up of the housing of a sealing, and wherein motor stator is to be fastened on the movable end of this main body, motor rotor is connected on the gear by power shaft and with the output shaft of its concentric extension with its power shaft and one, it is characterized in that: the other end of output shaft is that the flange female cap by gear constitutes, and this flange is mounted near in the bearing of housing outer peripheral portion.

This gear for example can be planetary gear or the slip gear that has bought in a market, and because power shaft is hollow, it can derive output shaft by this power shaft.This output shaft preferably is installed in the bearing that is positioned at the box-shaped shell two ends, and in addition, the other end of axle just forms the flange female cap of this geared system.The motor that has a gear preferably be installed in one with this concentric cylindrical shell in, the housing of other shape also can adopt.

Essential characteristic of the present invention is to be described in each claim.Each most preferred embodiment of the present invention will be described as follows in conjunction with the accompanying drawings:

Fig. 1 is the cross section cut-away view of a most preferred embodiment that shows the motor of band gear of the present invention;

Fig. 2 shows an alternative embodiment of the invention; With

Fig. 3 shows a motor that further develops that has triple gear.

The standing part 1 of the housing in Fig. 1 is by retainer 17, for example can adopt screw, is fixed on the circumference that is supporting with the structure of the motor of gear.The standing part of gear is to be fixed on the standing part 1 of housing, and the output of gear is to be connected on the output flange 2 of output shaft 20, will be fastened on the flange 2 by the parts of motor/gear drive.This flange 2 is preferably made a single piece with axle 20.

Power shaft 15 is to be rotated by rotor 7 drives of motor, and this rotor is fixed on the axle, and the stator of motor is to be fixed on the removable section 13 of housing.This power shaft 15 is mounted in the bearing of flange female cap 2 of main body 1 and gear drive.In order to make output shaft have good stable, this output shaft is positioned at the bearing 3 near the end flange of circumference, and the other end is installed in the bearing 4.The stator 8 of motor, transducer 9 and circuit 11 are to be fixed on the removable section 13 of main body so that control and handle according to various needs.Suitable motor is a DC motor, and the speed of its rotating method and revolution what and rotational motion is according to for example controlling from the signal of control cable by circuit 11.Part 13 is to be fixed tightly on the main body on the part that faces toward along the circumferential edge of point 16 facing to bearing 4 by the nut 5 on the screw thread that is screwed to output shaft.Be used for motor supply of electric power stube cable and be used for transducer and the cable of control circuit all feeds in the main bodys by import 12.

Dismountable electronic section 11 of main body is to take off so that keep in repair or other purpose by unscrewing nut 5 again, can whole part 13 be comprised that internal part takes off along release surface 14-14 together by a simple method then.For ease of unloading process, each cable all is provided with suitable connector.

When part 13 is taken off maybe may change the time, motor rotor 7, rotor sensor 10, bearing 3 and reduction gearing 6 all keep motionless.

With rotor sensor 10 and 20 ' be fixed on power shaft and the output shaft is suitable, thereby can provide information to rotating speed by transducer 9 thus, revolution, and rotation direction, rotational angle or relevant amount are controlled.Transducer can adopt can buy on the market or require custom-designed transducer for this reason.

Also can be installed on the power shaft on the output shaft because rotor sensor can be installed in, so just might be to the working condition of motor and gear with multiple by way of monitoring and controlling.

When require to have between the two bearings one long apart from the time, then the removable section 13 of this main body is exactly broad, can be provided for the control of motor thus, the power supply that for example is used for motor is supplied with, with be used for other needed space of useful adjusting device, these adjusting devices can be to be got up and/or made by custom-designed parts for this purpose by the component-assembled of buying on the market.

It is shown in Figure 2 that another kind has the embodiment of motor of band gear of advantage.Wherein identical label is in order to same part in addition used in the presentation graphs 1.In fact its main difference is that the slip gear 30 that its reduction gearing is realized by some steel balls is formed, and steel ball 30 constitutes the bearing of flange female cap 2.A kind of slip gear of this pattern as in No. 7136, Finnish patent introduce.Steel ball 30 all is with mutual equidistant setting on the raceway face of arranging along steel ball in the present invention.This steel ball 30 constitutes the bearing that is equivalent to the bearing 3 among Fig. 1.They further constitute gear 6.These steel balls are close to two surfaces 31 in the groove of settling in rotor, on the surface 32 and a surface 33 in the output flange in the main body 1.When motor operation, the

surface

31,32,33 in the cut-away view of the cross section of Fig. 2 forms a circuit orbit.The gearratio of gear is to be determined by

surface

31,32,33 to the distance of the axis 34 of axle and the correlation between these distances.

Motor/gear described above can further dispose, the bearing 30,3,4 of output shaft 20, and the pad between the each several part of

housing

19,22,23,24, and the import pad all is liquid seal.The whole inside of main body is filled with suitable liquid in this structure, water-propylene glycol solution for example, thus might motor/gear be placed water or a kind of environment that contains fretting gas by the compound action of liquid and pad.Perhaps have only the part of main body to fill with liquid.

When needs, the part in addition of gear drive can seal by 22,23 and 24.This gear also can turn round under drying condition, does not so just need to have sealed.

For such its gearratio of device that has slip gear is to be difficult to predeterminedly, and wherein a part of reason is that another part reason is because the in addition part wearing and tearing in the course of work owing in other the part manufacturing tolerance is arranged.But the variation of the gearratio that is occurred is a no problem in the course of the work, this be because according to motor/gear of the present invention be

origin autobiography sensor

10,20 ' and 9 information control.Control electronic installation 11 can have a reponse system, so then output shaft 20 ' revolution or corner can control exactly, and have nothing to do with the variation of gear ratio.

On the other hand, by

transducer

9,10, the variation of the 20 ' gearratio experienced can be used for monitoring this motor/gear in the long-term course of work, and the adjustment that for example is used for the bearing clearance.

When the material of steel ball and each surperficial material contacted with it selected by suitable method and definite size after, above-mentioned various the variation basically can avoid fully.

Referring to Fig. 3, the bearing that is adopted is the same with the friction bearing structure shown in Fig. 2, but has shown a tertiary structure for example as one.But can adopt two, four, Pyatyi or the like.Represent with identical label with the identical part in addition shown in Fig. 2.

Steel ball in gear not at the same level with

label

30,30 ', 30 " expressions.The pairing power shaft of each gear stage with

label

15,15 ', 15 " expression, and its pad with

label

24,24 ' and 24 " expression.Reduction gearing be by with

steel ball

30,30 ', 30 " realize what several coaxial slip gears constituted.

Each gear stage can have a determined gear ratio of the radius by its each contact surface.In this embodiment, the gearratio of each gear stage can be 16: 1, thus given total gear ratio be 4096: 1.

The power shaft of each gear stage and output shaft, can be configured to

rotor sensor

10,10 ' and 10 "; 20 '; be

rotor sensor

10,10 ', 10 ", 20 ' all are arranged on each of each gear stage, thereby top control of mentioning and monitoring function rely on a feedback line to be achieved.

Motor/gear of the present invention can suitably be configured to a hollow output shaft 20 as shown in FIG..According to instructions for use, axial support member, rotation axis, cable and pipeline, and just can import or as by the functional part of the device of motor/gear drive or each device or as unit independently by this device main body with the pipe of liquids and gases.

When an in addition part that has an internal thread was mounted to hollow output shaft 20 inboard, then the rotational motion of the output shaft of this motor/gear just can convert a direct controlled axial motion that extend in the output shaft to, demonstration among the figure.

By

transducer

9,10,20 and the rotational motion handled of control electronic circuit can accurately be limited, even reach an a few percent of changeing, perhaps under the velocity conditions of control, extend to continuous rotational motion.Because the relation of the pitch of the gearratio of reduction gearing and above-mentioned bolt thread, the main shaft that moves in hollow shaft can even accurately be controlled with a setting accuracy that has precedence over 0.01 millimeter in the single gear situation.

The motor of band gear not only can be with having rotated but also can be used as the actuator of axial motion, and its gear ratio can be at 5: 1 and 10,000: optional between 1.

Claims

1, a kind of motor with gear, wherein the standing part of reduction gearing (6) is on the standing part (1) that is fixed tightly in main body, this main body is by the housing (1 of a sealing, 13) form, and wherein motor stator is to be fastened on the movable end (13) of this main body, motor rotor (7) is connected on the gear by power shaft and with the output shaft (20) of its concentric extension with its power shaft (15) and one, it is characterized in that: the other end of output shaft is flange female cap (2) formation by gear, and this flange is mounted near in the housing excircle bearing (3) partly.

2, according to claim 1 with the motor of gear, it is characterized in that: its reduction gearing is to be made of a slip gear of realizing with some steel balls (30), and steel ball (30) constitutes the bearing of flange female cap (2).

3, as the motor of band gear as described in the claim 2, it is characterized in that: described reduction gearing be by with steel ball (30,30 ', the several coaxial slip gear that 30 ") are realized constitutes.

4, according to claim 1 with the motor of gear, it is characterized in that: described end (13) but integral demounting, comprise around axle (15,20) transducer of An Zhiing (19) and electronic control circuit (11), and rotor sensor (10) both can be arranged on the power shaft (15) of gear and also can be arranged on the output shaft (20).

5, as the motor of band gear as described in the claim 4, it is characterized in that: its rotor sensor (10,10 ', 10 ", 20 ') all be arranged on each of each gear stage.

6, as the motor of the band gear of any one requirement as described in the claim 1 to 13, it is characterized in that: the bearing (30 of output shaft (20); 3,4), the pad between the housing each several part (19; 22,23,24) and import pad (18) all be liquid seal, the motor of this band gear is what completely or partially to be filled with liquid.

7, as the motor of the band gear of any one requirement as described in the claim 1 to 6, it is characterized in that: its output shaft (20) is hollow.

8, as the motor of band gear as described in the claim 5, it is characterized in that: a member is screwed in the inboard of output shaft (20) with screw thread, and then the rotational motion of output shaft (20) just can be converted into the direct controlled axial motion that extend into the main shaft in the output shaft.