CN201788811U

CN201788811U - Manual operating device of non-excited tap switch

Info

Publication number: CN201788811U
Application number: CN2010205158292U
Authority: CN
Inventors: 史伟峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-27
Filing date: 2010-08-27
Publication date: 2011-04-06
Anticipated expiration: 2020-08-27

Abstract

A manual operating device of a non-excited tap switch comprises a transmission mechanism, a display mechanism and a self-locking mechanism connected on a base. The transmission mechanism comprises an input shaft and an output shaft that are perpendicular to each other, as well as a gear train formed by gears connected on the shafts by engagement with each other. The display mechanism comprises gear marks, angle marks, a large pointer and a small point on an instrument panel. The self-locking mechanism comprises a handle self-locking, a gear self-locking and a head-tail end self-locking. The transmission mechanism is formed by the engagement of a worm wheel and a worm screw on the input shaft and the transmission of the gear train, resulting in more accurate gearshift position and more labor-saving operation. The large pointer and the small pointer are used for displaying, so that the display is striking and has high precision, the gear reading is visual, and the uncompleted gearshift due to visual error is avoided. In case of uncompleted gearshift, the handle can not be taken off due to the self-locking function; and the self-locking function is complete, so that the gear slide problem caused by the movement of the handle after the complete gearshift is basically solved, the hidden danger of transformer damage due to gear slide is eliminated, and the reliability and safety of equipment is improved. The manual operating device can also be used for remote monitoring.

Description

The manual control device of off circuit tap changer

Technical field

The utility model relates to the manual control device of a kind of operating device of sub-connecting switch of transformer, particularly off circuit tap changer.

Background technology

In the power transmission and transformation field, off circuit tap changer is being extensive use of as the control appliance of power transformer, as strip-shape tap switch and cage type tapping switch, respectively by moving horizontally and rotatablely moving, control moving contact and fixed contact being connected differently, thereby change the transformer coil number of turn, play the effect of regulation voltage.Above-mentioned two kinds of shunting switchs all are that the rotation by rotating shaft comes regulation voltage.

Under the high-voltage large current condition, moving contact cooperates with fixed contact accurately when requiring the shunting switch energising, reduce contact resistance, reduce the contact heating, guarantee shunting switch and transformer safety, also require convenient reading, energy is the recording operation situation automatically, and the position of driving switch can be monitored to the control room by electrical signal transfer.

Patent No. 200920013699.X " strip-like non-excitation tapping switch operating device " by the gear groove is set, shows current gear on handwheel; Cooperate by dog screw and gear groove, in case on-slip shelves phenomenon, for high-power transformer, the control handwheel only depends on the scale on the handwheel to carry out reading and control often in transformer top or bottom, and very inconvenience also can't be carried out remote monitoring.

The patent No. 02229566.6 " the orientation display control unit of shunting switch ", a kind of driving switch is provided, by projection compressing sensitive switch, check whether driving switch puts in place, when gear is not in place, send warning, in case on-slip shelves and mistake show, misoperation, but its insufficiency can not telemonitoring.

Summary of the invention

Technical problem to be solved in the utility model is: the manual control device that a kind of off circuit tap changer is provided, show that eye-catching reading is directly perceived, its multiple functional can also self-locking, safe in utilization, eliminated the gear security incident that equipment and personnel are brought not in place fully, but telemonitoring also simultaneously.

The technical scheme in the invention for solving the above technical problem is: the manual control device of off circuit tap changer, by being installed in loam cake, transmission mechanism in the box body on the pedestal, indication mechanism, self-locking mechanism is formed, described transmission mechanism is by the Large Gear Shaft During that has gear, the band gear, helical gear helical teeth axle, the variable-speed shaft of band gear, the band worm screw is with the power shaft that is connected with handle and be connected with helical gear, the output shaft of worm gear vertically is connected on the pedestal by bearing mutually, connect cogged big, little needle pivot is connected on the panel board by bearing, and the gear on each is meshing with each other and constitutes pinion unit and form; Described indication mechanism is by the gear mark on the panel board, angle mark and be connected big, little finger of toe needle shaft top big, the little finger of toe pin constitutes, described self-locking mechanism comprises the handle self-locking, the gear self-locking, described handle self-locking by the two ends of the self-lock pin that is connected with band spring I on the fixed block respectively with handle on ring groove and the teeth groove on the limit base cooperate and form, described gear self-locking by the two ends of the gear self-lock pin that is connected with spring II on the fixed block respectively with the self-locking wheel on long recess and the length of push boat, minor face cooperates, also have on annular groove and the pedestal on the described gear self-lock pin by spring, the spring pivot that pellet shot from a slingshot constitutes cooperates, and also is connected with an end of switch lock on the gear self-lock pin.

Compared with prior art, advantage of the present utility model is: the transmission mechanism that worm engaging on employing worm gear and the power shaft and gear train transmission constitute, and make shift pattern more accurate, operate more laborsaving; Adopt big or small pointer to show, the display precision height, the gear reading is directly perceived, shows eye-catchingly, has avoided the gear shift not in place that causes because of the collimation error, and easy to operate, just gear shift is once but handle whenever rotates a circle; Self-locking mechanism multiple functional, the gear shift back handle that puts in place, but gear is self-locking all, thoroughly solve the gear shift back handle that puts in place and move a sliding shelves phenomenon that causes again, and need after the gear self-locking could release to be convenient to realize being exclusively managed by a specially-assigned person with key, handle and key all can take off after using, if gear shift is not in place, handle is just got to be got off, fundamentally avoided fully damaging transformer because of sliding shelves, the reliability and the fail safe of equipment have been improved, on the output shaft self-locking of first and last shelves is installed also simultaneously, can prevent missed shift again and device damage that super scope operation causes, have counter can write down shift number automatically, gear stages also can be carried out telemonitoring by the signal of telecommunication, is convenient to administrative staff's monitoring and centralized management.

Description of drawings

Fig. 1, structural representation of the present utility model (stereogram).

Fig. 2, structural representation of the present utility model (taking away the stereogram of loam cake and box body).

The E-E view of Fig. 3, Fig. 2.

The vertical view of Fig. 4, Fig. 2 (taking away panel board).

The A-A view of Fig. 5, Fig. 3.

The B-B view of Fig. 6, Fig. 4.

The structural representation of Fig. 7, handle self-locking (the C-C view of Fig. 5).

The structural representation of Fig. 8, gear self-locking (the D-D view enlarged drawing of Fig. 5).

The structural representation of Fig. 9, switch lock (stereogram).

Figure 10, first and last shelves self-locking structure schematic diagram (stereogram).

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

There is worm screw 36-1 the lower end of power shaft 36, there is circular groove the upper surface, on 38 times end peripheries of handle ring groove 38-2 is arranged, handle 38 embeds in the circular groove with power shaft 36 usefulness pin 38-1 and connects into integral body, and power shaft is connected on pedestal 25 and the base plate 27 by bearing 32.

It is corresponding with worm screw 36-1 position that one end of output shaft 31 is connected with worm gear 37, also is connected with helical gear 61 on the output shaft.

It is corresponding with helical gear 61 positions that the lower end of helical teeth axle 51 is connected with helical gear 62, and the upper end is connected with gear 63.

The lower end of Large Gear Shaft During 52 is connected with multi-gear switch 75, and the centre is connected with gear wheel 64, and the top is connected with gear 65.

The upper and lower end of variable-speed shaft 54 is

connection gear

68,67 respectively, and is connected on panel board 21 and the pedestal 25 by bearing.

Large and

small needle pivot

53,55 passes on the upper surface that panel board 21 is installed in panel board, and large and

small needle pivot

53,55 tops are fixed with large and

small pointer

72,73 respectively, is connected with gear 66 on the big needle pivot 53, and connection gear 69 on the little finger of toe needle shaft 55.

The lower end of helical teeth axle 51, Large Gear Shaft During 52 and variable-speed shaft 54 is vertically connected on the pedestal 25 by bearing 32, and output shaft 31 is by horizontal, the parallel below that is connected pedestal 25 of bearing.

And worm screw 36-1 and worm gear 37, gear wheel 64 respectively with gear 63 and gear 67, gear 68 and gear 69, helical gear 61 and helical gear 62, gear 66 are formed pinion units with gear 65 engagements and are constituted transmission mechanisms, and above-mentioned all gears with the axle all adopt key to be connected, as shown in Figure 3, Figure 4.

On the panel board 21 in 0～180 degree scope, the gear mark 22 that 1～15 gear is arranged of big pointer 72 indications and in 360 degree scopes the angle mark 23 of little finger of toe pin 73 indications, be fixed on the counter 71 that panel board lower surface and surface make progress, the little finger of toe needle shaft 55 terminal gears 69 that connect are provided with hook, the button that to link up with sum counter 71 with spring III74 connects, little pointer whenever revolves and turns around, spring III just spurs rolling counters forward once, counting adds one, observe directly the reading intuitive display the observation window 12 from loam cake 11.

There is gear socket 26 at the edge of pedestal 25, multi-gear switch 75 is screwed on the lower surface of pedestal, the swing arm of multi-gear switch is connected on the end of Large Gear Shaft During 52, fixed contact 77 uniform on moving contact 76 on it and the multi-gear switch cooperates, the fixed contact distribution angle is consistent with the gear angle, and is connected with interface 15 on box body 16 sidewalls with the gear socket, the gear signal of telecommunication can be transferred to the control room, be convenient to the residing gear of telemonitoring shunting switch, constitute indication mechanism.

Self-locking mechanism is made up of handle self-locking, gear self-locking, the self-locking of first and last shelves.

The self-locking of first and last shelves: be separated by by on first, last position-

limited wheel

33,34 and the location-plate 35-locating piece 35-1, the 35-2 of distance cooperate and form, the thickness of standoff distance and position-limited wheel is complementary, there are a projection 33-1,34-1 to be connected on the output shaft 31 on first, the last position-limited wheel respectively with key, two projections, 30～70 ° the angle that staggers during installation, two ends also are fixed on the output shaft with jump ring, prevent the axial endplay of head, end shelves position-limited wheel, location-plate is screwed on the lower surface of pedestal 25 corresponding head, last position-limited wheel, as Fig. 6, shown in Figure 10.

Fixed block 40 is screwed on the centre position of pedestal 25, and fixed block laterally has upper and lower two obstructed, parallel shoulder holes.

Handle self-locking: the self-lock pin 41 that is equipped with band spring I42 in the upper shoulder hole by fixed block 40, to be spheroid cooperate with ring groove 38-2 on the handle one end of self-lock pin, the other end cooperates composition with teeth groove 43-1 on the limit base 43, and self-lock pin is also fixed with jump ring, as shown in Figure 7.

End periphery has 16 uniform teeth groove 43-1 on the limit base 43, and the centre is a through hole, is screwed on the surface of gear wheel 64, as Fig. 4, Fig. 5, Fig. 6, shown in Figure 7.

Gear self-locking: by the gear self-lock pin 45 of mounting strap spring II 47 in the downstairs hole of fixed block 40, its periphery has annular groove 45-1, with the pedestal of its opposite position on, connection is by spring, the spring pivot 49 that pellet shot from a slingshot is formed cooperates with annular groove 45-1, restriction stops that gear self-lock pin 45 continues a left side again after gear shift, move right, and be installed in handle 38 belows, there is the self-locking wheel 44 of long recess 44-1 to cooperate on the power shaft 36 with on the periphery, the end of gear self-lock pin 45 connects and fixes an end of switch lock 46, and the gear self-lock pin cooperates composition with push boat 48 on being connected helical teeth axle 51, push boat 48 is for there being length, the long waist shaped of minor face is as Fig. 5, shown in Figure 8.

Panel board 21 usefulness screws and four columns 28 are fixed on the end of pedestal 25, as shown in Figure 2.

The above-mentioned pedestal that assembles 25 is screwed in box body 16, and loam cake 11 is screwed on box body 16, observation window 12 is arranged on the loam cake 11, the top of key 13 and handle 38 is installed, manual control device is assembled into.

During use, it is screwed in required work place with the installing hole 17 on the box body bottom, the pin-and-hole 31-1 of output shaft 31 1 ends is used for being connected with rotating shaft on the shunting switch, as shown in Figure 3.

When using the manual control device gear shift, rotating handle 38 by hand revolves it to turn around, drive worm gear 37 rotations that mesh together with it by the worm gear 36-1 on the power shaft 36 that links into an integrated entity with handle, and the output shaft that drive is connected with worm gear rotates, changing direction by the helical gear on the output shaft 31 61 is delivered to and helical gear 62, on the helical teeth axle 51 that gear 63 connects, drive Large Gear Shaft During 52 and the gear wheel 64 on it through the gear train transmission, gear 65 rotates, again by the gear 67 on the variable-

speed shaft

54,68, up to greatly, little finger of toe needle shaft 53, gear 66 on 55,69, drive big again, little finger of

toe pin

72,73 rotate and to carry out gear shift and to the position of gear shift, the demonstration of rotational angle.

Behind the shift end, self-lock pin 41 is moved to the left, the spheroid of its end inserts lock-bit among the round recessed 38-2 of handle under the effect of spring I42, the restriction handle can not be rotated further again, at this moment just handle upwards can be drawn, promoting self-lock pin 41 by handle simultaneously moves right, its end is inserted when moving right among the teeth groove 43-1 of limit base 43, at this moment just handle can be taken out from power shaft, if gear is not in place, the end of self-lock pin just can't be aimed at the teeth groove 43-1 on the limit base and insert, and handle is just stopped by self-lock pin to cannot take out.

Behind the shift end; gear self-lock pin 45 is also under the promotion on the 48 long limits of the push boat on the helical teeth axle 51; insert lock-bit in the long recess 44-1 on the self-locking wheel 44; simultaneously the pellet shot from a slingshot on the spring pivot 49 also embeds location in the ring groove 45-1 on the gear self-lock pin 45, and restriction gear self-lock pin 45 mobile plays the self-lock protection effect.

If want gear shift again again, also need to insert in the switch lock 46 with key 13 earlier, stir gear self-lock pin 45, the gear self-lock pin moves right under the effect of spring II47, and removing could operate as normal to the restriction of self-locking wheel 44.Meanwhile the pellet shot from a slingshot of spring pivot 49 is also pushed back in the pedestal hole by the gear self-lock pin.

Also has the self-locking of first and last end; first position-limited wheel 33 is to use when big gear is changed to little gear direction; during the gear 1 of output shaft 31 rotation arrival counterclockwise at this moment; projection 33-1 on it the piece 35-1 that just is positioned stops; the restriction output shaft is rotated further again; on the contrary; will from little gear change to big gear at this moment output shaft 31 clockwise directions rotate when reaching maximum gear 15; the projection 34-1 of end on the position-limited wheel 34 piece 35-2 that is positioned stops; can not be rotated further; make it can not exceed adjustable range, protection equipment is not damaged.

Handle 38 whenever revolves and turns around, and drive power shaft 36 revolves and turns around, and makes helical teeth axle 51 volutions 1/2 circle simultaneously, Large Gear Shaft During 52 rotations 1/16 circle, and little finger of toe needle shaft 55 revolves and turns around, and big needle pivot 53 rotates 1/32 circle.

Claims

1. the manual control device of an off circuit tap changer, by being installed in loam cake (11), transmission mechanism on the interior pedestal of box body (16) (25), indication mechanism, self-locking mechanism is formed, it is characterized in that described transmission mechanism is by the Large Gear Shaft During that has gear wheel (64) (52), band gear (63), the helical teeth axle (51) of helical gear (62), band gear (68,67) variable-speed shaft (54), band worm screw (36-1) and be connected with the power shaft (36) of handle (38) and be connected with helical gear (61), the output shaft (31) of worm gear (37) vertically is connected on the pedestal (25) by bearing mutually, be connected with gear (66,69) big, little needle pivot (53,55) be connected on the panel board (21) by bearing, and the gear on each is meshing with each other and constitutes pinion unit and form; Described indication mechanism is by the gear mark (22) on the panel board (21), angle mark (23) and be connected big, little finger of toe needle shaft top big, little pointer (72,73) constitute, described self-locking mechanism comprises the handle self-locking, the gear self-locking, described handle self-locking by the two ends of the self-lock pin (41) that is connected with band spring I (42) on the fixed block (40) respectively with handle (38) on ring groove (38-2) and the teeth groove (43-1) on the limit base (43) cooperate and form, described gear self-locking by the two ends of the gear self-lock pin (45) that is connected with spring II (47) on the fixed block (40) respectively with self-locking wheel (44) on long recess (44-1) and the length of push boat (48), minor face cooperates, described gear self-lock pin (45) is gone up to be also had on annular groove (45-1) and the pedestal by spring, the spring pivot (49) that pellet shot from a slingshot constitutes cooperates, and also is connected with an end of switch lock (46) on the gear self-lock pin.

2. the manual control device of off circuit tap changer according to claim 1, it is characterized in that having on the described panel board (21) the gear mark (22) and 360 angle marks of spending (23) of 1～15 gear, the counter (71) that panel board lower surface fixed surface makes progress, the terminal gear (69) that connects of little needle pivot (55) is provided with hook, and the button that will link up with sum counter (71) with spring III (74) connects.

3. the manual control device of off circuit tap changer according to claim 1, there is gear socket (26) at the edge that it is characterized in that described pedestal (25), multi-gear switch (75) is screwed on the lower surface of pedestal, the swing arm of multi-gear switch is connected on the end of Large Gear Shaft During (52), fixed contact (77) uniform on moving contact on it (76) and the multi-gear switch cooperates, and is connected with interface (15) on box body (16) sidewall with the gear socket.

4. the manual control device of off circuit tap changer according to claim 1, it is characterized in that described self-locking mechanism also comprises the self-locking of first and last shelves, be connected on the output shaft (31) by the head that has projection (33-1,34-1), last position-limited wheel (33,34), cooperate with the locating piece (35-1,35-2) of the distance of being separated by on being fixed on pedestal lower surface location-plate (35), first, last position-limited wheel 30～70 ° of angles that stagger on output shaft (31), the distance of being separated by is complementary with thickness first, last position-limited wheel.

5. the manual control device of off circuit tap changer according to claim 1 is characterized in that described limit base (43) has uniform 16 teeth groove (43-1) for last end periphery, and the centre is a through hole, is screwed on the surface of gear wheel (64).

6. the manual control device of off circuit tap changer according to claim 1 is characterized in that described push boat (48) is connected on the helical teeth axle (51), for the long waist shaped on long and short limit is arranged.

7. the manual control device of off circuit tap changer according to claim 1, it is characterized in that described fixed block (40) is screwed on the centre position of pedestal (25), fixed block laterally has upper and lower two obstructed, parallel shoulder holes, on the periphery of described self-locking wheel (44) long recess (44-1) is arranged, in upper shoulder hole, slide and join self-lock pin (41), the sliding gear self-lock pin (45) of joining in the downstairs hole.

8. the manual control device of off circuit tap changer according to claim 1, it is characterized in that on the end periphery ring groove (38-2) being arranged under the described handle (38), there is worm screw (36-1) power shaft (36) lower end, there is circular groove the upper surface, handle (38) embeds in the circular groove with pin (38-1) with power shaft and connects into integral body, and power shaft (36) is connected on pedestal (25) and the base plate (27).