CN201369253Y - Hand-operating switch - Google Patents

Abstract

The utility model discloses a hand-operating switch, which is applied to a coupling between a motor output shaft and a speed reduction gearbox. Transmission between a transmission gear and the coupling is realized via a plurality of balls, the other end of the coupling is beveled inwards at the connecting position of an inner bore and a pillow block outer circle, the coupling is slidably engaged with the motor output shaft via splines, the axle center of the output shaft is a through hole, at least three through holes are uniformly drilled between an outer circle of the output shaft and the inner bore, steel balls with diameters equal to apertures of the through holes are disposed in the through holes, a guide rod is arranged in the through hole of the axle center of the output shaft, the guide rod is in sliding engagement with the through hole of the axle center, the front end of the guide rod matches with the inner diameter of a spring and is provided with a trapezoidal groove, and then the steel balls in the through holes can drop into the groove when the guide rod moves forwards, thereby disconnecting the coupling from the transmission gear. The hand-operating switch has the advantages of being capable of realizing connection and disconnection between a motor and the speed reduction gearbox by hand operation and then bringing convenience for test and maintenance of equipment.

Description

Manual operation switch

Technical field

The utility model relates to manual operation switch, the manual operation switch on a kind of specifically shaft coupling that is applied between motor output shaft and the gear reduction box.

Background technology

Double voltage type SF6 gas-insulated loop-network switch cabinet is the middle pressure inflation cabinet loop networks switch that German Shi Er company produces, the divide-shut brake between its uses in 12～24KV power transmission and transformation power system.And the main action element that will carry out divide-shut brake is to be finished by motor-operating mechanism, because compact conformation, the volume of this SF6 gas-insulated loop-network switch cabinet are small and exquisite, therefore, action as divide-shut brake mainly is directly to drive the forward and reverse rotation of sprocket wheel and carry out the electric power switching by motor drive mechanism, and motor-operating mechanism is combining by a permanent magnet direct current motor and a cover level Four reduction gearing.Because situation when motor can't be worked when considering the outage of issuable fault of motor and battery.Therefore, must switch (divide-shut brake) with the electric power at any time that satisfies in the electric power system with a cover hand gear.Though and also can carry out manually and electric operating by the motor-operating mechanism of original design, it is confined to use on the spring energy-storage operating mechanism.Because former motor-operating mechanism is to carry out spring energy-storage earlier, the back discharges divide-shut brake by spring energy and carries out the electric power switching.And this product is not by spring energy-storage but directly carry out divide-shut brake.Therefore, can't use for reference.This product is to achieve the above object by developing a kind of new motor-operating mechanism.

The utility model content

The purpose of this utility model provides a kind of manual operation switch, has realized the controllability of the switching of transmission between motor and the gear box.

The purpose of this utility model is to be achieved through the following technical solutions:

Manual operation switch, be applied on the shaft coupling between motor output shaft and the gear reduction box, described shaft coupling is installed in the inboard of gearbox drive gear, the motor output shaft front end is being fixed sprocket wheel, by chain drive, drive another sprocket rotation on the circuit breaker, thereby realize that direct electric power switches, travelling gear and shaft coupling are by several ball transmissions, the other end of shaft coupling carries out interior chamfering at endoporus and pillow block cylindrical junction, shaft coupling and motor output shaft adopt spline to be slidingly matched, the output shaft axle center is a through hole, between its cylindrical and endoporus, evenly be drilled with at least three through holes, in its through hole, lay diameter and equate steel ball with the aperture, one guide post is arranged in the output shaft axis through-hole, the axle center of guide post is a through hole, guide post becomes to be slidingly matched with axis through-hole, guide post front end and spring inside diameter match, and be provided with trapezoidal groove at the guide post front end, the guide post rear end is provided with rectangular recess, lays a spring at the guide post front end, and is provided with pivot pin on output shaft, the top of described pivot pin is positioned at rectangular recess, with the lateral displacement of restricted guidance bar; A pull bar is passed at the place in the output axle center, and pull bar is by the through hole of guide post, and each fixes the two ends of pull bar with nut.

The beneficial effects of the utility model are: can manual operation realize the switching that is connected between motor and the reduction box, be convenient to the check and the maintenance of equipment.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the structure chart of the described manual operation switch of the utility model embodiment;

Fig. 2 is the scheme of installation of the described manual operation switch of the utility model embodiment.

Among the figure: 1, motor; 2, gear reduction box; 3, guide post; 4, pivot pin; 5, travelling gear; 6, steel ball; 7, shaft coupling; 8, steel ball; 9, spring; 10, output shaft; 11, sprocket wheel; 12, pull bar; 13, trapezoidal groove; 14, rectangular recess; 15, spline; 16, back-up ring.

Embodiment

Shown in Fig. 1-2, manual operation switch described in the utility model, manual operation switch, be applied on the shaft coupling 7 between motor 1 and the gear reduction box 2, be equipped with on the output shaft 10 of motor 1 with the slippery gear of its endoporus 5 teeth of itself and travelling gear are meshed, output shaft 10 front ends are being fixed sprocket wheel 11, by chain drive, drive another sprocket rotation on the circuit breaker, thereby realize that direct electric power switches (divide-shut brake).Be characterized in that the gear installed inside on the output shaft 10 has shaft coupling 7, and on travelling gear 5 inner side plane, be drilled with the shallow bore hole of 19 Φ 6mm.Fixing the steel ball 6 of 19 Φ 6mm on shaft coupling 7 one large end faces, steel ball 6 can freely roll in fixing hole, the shallow bore hole of 19 Φ 6mm is meshed on the steel ball 6 of these 19 Φ 6mm and travelling gear 5 inner side plane, described steel ball 6 has the spheroid above half to be positioned at shaft coupling 7, and rest parts is positioned on the inner side plane of travelling gear 5.The other end carries out chamfering in 45 ° at endoporus and pillow block cylindrical junction.The endoporus of shaft coupling 7 is non-standard shape involute cylindrical gear spline 15, matches with non-standard shape involute profile spline 15 on the output shaft 10.Output shaft 10 axle center are through holes, a hole circlip groove is arranged in the through hole, lay hole back-up ring 16, between its cylindrical and endoporus, be drilled with three φ 8mm through holes of trisection respectively, lay the steel ball 8 of three φ 8mm in its through hole, these three φ 8mm steel balls 8 can be free up and down in its hole.One guide post 3 is arranged in output shaft 10 axis through-holes, the axle center of guide post 3 is a through hole, guide post 3 two ends maximum outside diameters become the sliding state of joining with axis through-hole, guide post 3 front end cars, one boss and spring 9 internal diameters match, leave boss 3.5mm place car one trapezoidal groove 13, minimum outer diameter is that the minimum place of being located in of φ 8mm steel ball makes its φ 8mm steel ball peak not exceed output shaft 10 external diameters, so that steel ball easy on and off activity in the hole within it.4.5mm place, transverse plane place car one rectangular recess 14 is left in guide post 3 rear ends, between the appropriate location of output shaft 10 endoporus and rectangular recess 14, but puts a pivot pin 4 so that guide post 3 forward end in output shaft 10 endoporus is free to slide.Lay a helical spring 9 at guide post 3 front ends, a pull bar 12 is passed at 10 heart places at output shaft, and passes through the through hole of guide post 3.Each fixes two ends with nut.To just in time be the ball center of steel ball 8 in the middle of the 3.5mm place between guide post 3 front end boss places and the trapezoidal groove 13 during design, and the peak of steel ball 8 just in time with inboard 45 ° of shaft coupling 7 one ends in the chamfering place tangent.When the running of motor energising back, because the engaged transmission of travelling gear 5, drive travelling gear 5 rotations on the output shaft 10, and the shallow bore hole of inboard 19 the Φ 6mm of travelling gear 5 is being fixed the steel ball 6 of 19 Φ 6mm and is meshed and drives shaft coupling 7 rotations on shaft coupling 7 sides, and shaft coupling 7 is because non-standard shape involute profile spline fitted on the non-standard shape involute cylindrical gear spline 15 of endoporus and the output shaft 10, thereby drive output shaft 10 rotations, reach the purpose of divide-shut brake, when the pull bar 12 of pulling by the axle center, guide post 3 is because the effect of pulling force forces spring 9 compression forward end to move, cause steel ball to fall, cause shaft coupling 7 to unclamp, force shaft coupling 7 to throw off travelling gear 5 inboards.The state that this moment, the travelling gear 5 on the output shaft 10 cooperated with output shaft 10 is that cunning is joined state, when shaking 10 rotations of sprocket wheel 11 rotation drive output shafts with handle, because the travelling gear 5 on output shaft 10 and the output shaft 10 has become cunning to join state, output shaft 10 just can freely rotate in its travelling gear 5 endoporus very easily, therefore, just can directly carry out electric power and switch (divide-shut brake), reach manual purpose.

Claims (5)

1, manual operation switch, be applied on the shaft coupling between motor output shaft and the gear reduction box, described shaft coupling is installed in the inboard of gearbox drive gear, the motor output shaft front end is being fixed sprocket wheel, by chain drive, drive another sprocket rotation on the circuit breaker, thereby realize that direct electric power switches, it is characterized in that, travelling gear and shaft coupling are by several ball transmissions, the other end of shaft coupling carries out interior chamfering at endoporus and pillow block cylindrical junction, and shaft coupling and motor output shaft adopt spline to be slidingly matched, and the output shaft axle center is a through hole, between output shaft cylindrical and endoporus, evenly be drilled with at least three through holes, lay the steel ball that diameter equates with the aperture in its through hole, a guide post is arranged in the output shaft axis through-hole, guide post becomes to be slidingly matched with axis through-hole, guide post front end and spring inside diameter match, and be provided with trapezoidal groove at the guide post front end, so that the steel ball in the through hole falls in the groove when guide post moves forward, and then the disconnection that is connected of shaft coupling and travelling gear.

2, manual operation switch according to claim 1 is characterized in that, the axle center of guide post is a through hole, a pull bar is passed at the place in the output axle center, pull bar is by the through hole of guide post, and each fixes the two ends of pull bar with nut, lays a spring at the guide post front end simultaneously.

3, manual operation switch according to claim 2 is characterized in that, described spline is non-standard shape involute cylindrical gear spline.

4, manual operation switch according to claim 2 is characterized in that, the guide post rear end is provided with rectangular recess, and is provided with pivot pin on output shaft, and the top of described pivot pin is positioned at rectangular recess, with the lateral displacement of restricted guidance bar.

5, manual operation switch according to claim 2 is characterized in that, the spheroid that described ball surpasses half is positioned at shaft coupling, and other parts are positioned at the medial surface of travelling gear.

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