CN2851710Y

CN2851710Y - Special clutch for electric module of chassis handcart for middle arranged vacuum circuit breaker

Info

Publication number: CN2851710Y
Application number: CN 200520119692
Authority: CN
Inventors: 黄国强
Original assignee: Guangzhou Baiyun Electric Equipment Co Ltd
Current assignee: Guangzhou Baiyun Electric Equipment Co Ltd
Priority date: 2005-12-02
Filing date: 2005-12-02
Publication date: 2006-12-27
Anticipated expiration: 2015-12-02

Abstract

The utility model relates to a special clutch for an electric operational module of a chassis handcart for a middle arranged vacuum circuit breaker, which is used for a medium voltage handcart switch cabinet. A shaft connecting block, a separating pressure spring, a clutching block, a worm wheel and a chain wheel of the clutch are orderly arranged on a rotary shaft, wherein the shaft connecting block and the chain wheel of the clutch are fixedly connected with both heads of a stepped rotary shaft by an elastic cylindrical pin; outer rings of the opposed surfaces of the shaft connecting block and the clutching block of the clutch are respectively provided with a radial groove and a radial convex block which are correspondingly engaged, and inner rings of the opposed surfaces are respectively provided with a circular groove, wherein the separating pressure spring of the clutch is hidden in the circular groove. The opposed surfaces of the clutching block and the worm wheel of the clutch are symmetrically provided with conical holes which are distributed on a periphery, and steel balls are placed in the conical holes. A friction spring of the clutch is sheathed in a U-shaped groove on the outer surface of the clutching block of the clutch. The novel clutch effectively solves the mutual conversion of the electric operation and the manual operation of the chassis handcart VCB, and has the advantage of simple and reliable operation so that the functions of pushing in, backing out, displaying states, monitoring the states, controlling the states, etc. of the handcart VCB by an on-site / remote control mode are realized, and the possibility that the safety of supplying electricity is largely enhanced is provided.

Description

The extraordinary clutch of the electronic module of middle vacuum circuit breaker chassis

Affiliated technical field

The utility model relates to a kind of clutch, especially relate to a kind ofly be used for pressing in the handcart switch cabinet, the extraordinary clutch of middle vacuum circuit breaker (VCB) chassis electric operating module.

Background technique

Press in the handcart switch cabinet in existing; for making middle vacuum circuit breaker (VCB) can push (pushing working position and locking) easily and withdrawing from functions such as (withdrawing from testing position and locking) by the working position in testing position; VCB is contained on the chassis of the small handcart that is called handcart in the industry; handcart has to move ahead on the track of wheel in switch cubicle and retreats; handcart is to realize the motion of VCB handcart in cabinet by the manual operation rocking handle; its function singleness; do not possess to intelligent development; so-calledly be meant to intelligent development: thus make pushing of VCB chassis by the handcart of electric operating middle VCB; withdraw from and realize on the spot electronic or remote control; and will cooperate with intelligent control protected location; progressively realize the switch cubicle functional intellectualization; provide easy and simple to handle to the client, increase substantially the power supply safety reliability.For realizing electric operating middle VCB handcart, on chassis, installed the electric operating module additional, it is made of motor and power train, on the output shaft of motor, clutch is housed, because handcart is to be contained in the switch cubicle, require each parts all small and exquisite as far as possible, but and the also mutual switching of electric/manual operation when needed, existing clutch is difficult to meet the demands.

The model utility content

The purpose of this utility model just provides a kind of extraordinary clutch that is used for middle VCB chassis electric operating module, and it was both small and exquisite, but and the also mutual switching of electric/manual operation when needed.

For achieving the above object, the extraordinary clutch that is used for middle VCB chassis electric operating module that this is novel, its structure is: order is contained in clutch connecting shaft piece, clutch separation stage clip, clutch on-off piece, worm gear, the sprocket wheel in the rotating shaft, and clutch connecting shaft piece and sprocket wheel are fixedly connected on two of ladder rotating shaft by elastic cylindrical pin; Be shaped on the radial groove and the radial projection of corresponding engagement on the opposing side outer ring of clutch connecting shaft piece and clutch on-off piece respectively, inner ring also has circular trough on the opposing side, built-in clutch separation stage clip; Symmetry has and is distributed on the conical bore on the circumference and is placed with steel ball on the opposing side of clutch on-off piece, worm gear; In the U-groove bevel of clutch friction spring housing on the outer surface of clutch on-off piece.

Concrete operating principle: when motorized motions, its output is passed to worm gear by worm screw, and worm gear rotates, and drives the sprocket rotation outputting power by steel ball, clutch on-off piece, clutch connecting shaft piece, rotating shaft and makes the VCB chassis push or withdraw from; When sprocket wheel is that driving wheel is when also being manually-operable, can realize that equally outputting power makes the VCB chassis push or withdraw from, but this moment, sprocket rotation drove the rotation of clutch connecting shaft piece, under the pressure effect of clutch separation stage clip, clutch and clutch connecting shaft piece are thrown off, the static clutch separation of worm gear this moment.

The beneficial effects of the utility model are: because the VCB chassis of middle pressure handcart switch cabinet adopts this novel clutch, solve the mutual conversion of electric/manual operation VCB chassis better, it is simple to operate, reliable.Thereby for realize on the spot/functions such as distant place control VCB handcart pushes, withdraws from and state shows, monitoring and control, increase substantially the power supply safety reliability possibility be provided.It will fundamentally change the traditional intermediate distribution system and the device of control system, give the new technology of die pressing product injection in the tradition simultaneously, make on the middle die pressing product function new step.

Description of drawings

Fig. 1 is the exploded view of this novel clutch.

Fig. 2 is the cross-sectional schematic of this novel clutch structure.

Fig. 3 is a clutch connecting shaft block structure sectional view.

Fig. 4 is the worm's eye view of Fig. 3.

Fig. 5 is a clutch on-off block structure sectional view.

Fig. 6 is the worm's eye view of Fig. 5.

Fig. 7 is a clutch pressure spring structural representation.

Fig. 8 is the turning shaft structure schematic representation.

Fig. 9 is the worm gear arrangement cross-sectional schematic.

Figure 10 is the worm's eye view of Fig. 9.

Figure 11 is the chain sprocket structure cross-sectional schematic.

Figure 12 is the plan view of Figure 11.

Figure 13 is clutch friction spring schematic representation.

Among the figure: 1 rotating shaft, 2 clutch connecting shaft pieces, 3 clutch separation stage clips, 4 clutch on-off pieces, 5 worm gears, 6 sprocket wheels, 7 steel balls, 8 clutches friction spring, 9 elastic cylindrical pins.

Embodiment

Be described in further detail below in conjunction with drawings and Examples:

As illustrated in fig. 1 and 2, its structure of extraordinary clutch of the present utility model is: order is contained in clutch connecting shaft piece 2, clutch separation stage clip 3, clutch on-off piece 4, worm gear 5, the sprocket wheel 6 in the rotating shaft 1, clutch connecting shaft piece 2 and sprocket wheel 6 are fixedly connected on two of ladder rotating shaft 1 by elastic cylindrical pin 9, and outer more then is the bearing position; Corresponding respectively groove and the radial projection that is shaped on engagement on the two opposing side outer rings of clutch connecting shaft piece 2 and clutch on-off piece 4, when both fit and rotating shaft with changeing, inner ring also has circular trough on two opposing sides, and built-in clutch separation stage clip 3 pushes up separation with both at ordinary times; Symmetry has and is distributed on the conical bore on the circumference and is placed with steel ball on the opposing side of clutch on-off piece 4, worm gear, and its effect is to make both locate engagement, in the U-groove bevel of clutch friction spring housing on the outer surface of clutch on-off piece.

Extraordinary clutches engaged principle is summarized as follows: when worm gear is driving wheel, worm gear rotates, steel ball in the worm gear taper hole produces the component parallel with worm wheel shaft and outwards shifts out, thereby driving the clutch on-off piece rotates, under the friction effect of clutch friction spring, make steel ball produce the component increase parallel and overcome the pressure of clutch separation stage clip clutch with worm wheel shaft, the radial groove engagement of radial projection on the clutch on-off this moment piece and clutch connecting shaft piece, drive clutch connecting shaft piece, rotating shaft, sprocket rotation, outputting power.

Extraordinary clutch separation principle is summarized as follows: when sprocket wheel is driving wheel, suppose to require sprocket wheel to clockwise rotate, sprocket wheel is turned over an angle (about 15 °) counterclockwise, at this moment, separate with clutch connecting shaft piece groove side the side of the projection of clutch, and under the pressure effect of clutch separation stage clip, clutch on-off piece and clutch connecting shaft piece are thrown off, this moment, worm gear was static, reached the purpose of clutch separation.

Claims

1, the extraordinary clutch of the electronic module of middle vacuum circuit breaker chassis, it is characterized in that: order is contained in clutch connecting shaft piece (2), clutch separation stage clip (3), clutch on-off piece (4), worm gear (5), the sprocket wheel (6) in the rotating shaft (1), and clutch connecting shaft piece and sprocket wheel are fixedly connected on two of ladder rotating shaft by elastic cylindrical pin (9); Be shaped on the radial groove and the radial projection of corresponding engagement on the opposing side outer ring of clutch connecting shaft piece and clutch on-off piece respectively, inner ring also has circular trough on the opposing side, built-in clutch separation stage clip; Symmetry has and is distributed on the conical bore on the circumference and is placed with steel ball (7) on the opposing side of clutch on-off piece, worm gear; Clutch friction spring (8) is enclosed within the U-groove bevel on the outer surface of clutch on-off piece.