CN213660274U - Positioning device for electric mechanism for switch - Google Patents

Abstract

The utility model discloses an electric mechanism positioner for switch, including mechanism output shaft and locating support, be fixed with the locating wheel on the mechanism output shaft, be equipped with sincere son on the locating support, a side that sincere son is close to locating wheel one end is connected with locating support through sincere son reset spring, the another side that is located sincere son and is close to locating wheel one end on the locating support is equipped with limit structure, be equipped with the waist hole on the locating support, the position that is located the waist hole in the locating support is equipped with the positioning roller assembly, the positioning roller assembly includes positioning roller and location axle, be equipped with positioning roller in the waist hole, the positioning roller cover is epaxial in the location, the equipartition has 2 at least grooves on the outline of locating wheel, be equipped with reset spring on the locating support, the both sides that sincere son kept away from locating wheel one end are equipped. The utility model has the advantages of simple structure, the action is reliable, and its structure is small and exquisite be convenient for install to can require nimble positioning position and the quantity of changing according to switchgear.

Description

Positioning device for electric mechanism for switch

Technical Field

The utility model relates to an electric mechanism positioner for switch especially relates to a location auto-change over device mechanism that uses in isolation/earthing switch, belongs to the high tension switchgear field.

Background

In the field of high-voltage switch equipment, an isolating and grounding switch is an electrical equipment for connecting, disconnecting and grounding, and the core component for operating the isolating and grounding switch is an operating mechanism thereof.

Most of the existing operating mechanisms use gear racks or lead screw nuts for transmission and crank arms for transmission, and positioning devices of the operating mechanisms are travel switches. Once the travel switch fails or the crank arm does not act in place, the phenomena of isolation, grounding failure or over-in-place can occur in the equipment, so that great potential safety hazards are generated. The double-lead-screw nut structure is actually used for dividing isolation and grounding into two sets of mechanisms for control, so that the mechanism is large in size and is often limited by space, and inconvenient to install and debug. And only three stations are needed, so that the operation positioning position is inconvenient to adjust and increase.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: how to ensure the mechanical limit of the isolation and grounding functional positions in the mechanism, prevent the over-in-place phenomenon of the mechanism, and how to reduce the volume of the positioning device and facilitate the adjustment and increase of the operation positioning position.

In order to solve the technical problem, the technical scheme of the utility model is to provide an electric mechanism positioning device for switch, which is characterized by comprising a mechanism output shaft and a positioning support, wherein the mechanism output shaft is connected with a switch device, the mechanism output shaft is fixed with a positioning wheel synchronously rotating with the mechanism output shaft, the positioning support is provided with a pawl rotating around a pawl positioning pin, one side surface of the pawl close to one end of the positioning wheel is connected with the positioning support through a pawl reset spring, the other side surface of the positioning support corresponding to one end of the pawl close to the positioning wheel is provided with a limiting structure for preventing the excessive rotation of the pawl, the positioning support is provided with a waist hole, the position of the waist hole in the positioning support is provided with a positioning roller assembly which enables the pawl to be propped after rotating, the positioning roller assembly comprises a positioning roller and a positioning shaft, the positioning roller moving along the length direction of the waist hole is arranged in the waist, at least 2 grooves for enabling the positioning idler wheel to roll in and out are evenly distributed on the outer contour of the positioning wheel, a reset spring with one end pressed on the positioning idler wheel is arranged on the positioning support, driving mechanisms for driving the sincere bodies to rotate towards two sides are respectively arranged on two sides of one end, far away from the positioning wheel, of the sincere bodies, and the driving mechanisms on the two sides are all fixed on the positioning support.

Preferably, the positioning bracket is fixedly connected with the bent plate, and the travel switch is fixed on the bent plate.

Preferably, the engine positioning pin is arranged in the middle of the engine and further comprises an engine positioning bearing, and the engine positioning bearing is sleeved on the engine positioning pin.

Preferably, one side of the engine reset spring is fixed on the positioning bracket, a counter bore is arranged on the engine, and the other side of the engine reset spring is propped against the inside of the counter bore of the engine.

Preferably, the grooves uniformly distributed on the outer contour of the positioning wheel are V-shaped grooves, arc-shaped grooves or trapezoidal grooves.

Preferably, the reset spring pressing on the positioning roller is a reset torsion spring, the reset torsion spring is fixed in the positioning bracket through a torsion spring positioning pin, one side of the reset torsion spring abuts against a torsion spring positioning bolt fixed on the positioning bracket, and the other side of the reset torsion spring abuts against the positioning roller.

Preferably, the return spring pressing on the positioning roller is a return compression spring.

Preferably, a U-shaped groove is formed in the middle of the outer contour of the positioning wheel; the positioning roller assembly further comprises a positioning shaft bearing, and the positioning shaft bearing capable of sliding in the U-shaped groove is arranged on the positioning shaft.

Preferably, in the initial state, the positioning roller falls into the groove of the positioning wheel, one end of the pawl close to the positioning wheel is propped against the positioning roller, and the other side of the pawl far away from one end of the positioning wheel is in contact connection with a driving mechanism;

when the other driving mechanism drives the pawl to move towards one side far away from one end of the positioning wheel, the positioning wheel rotates, the positioning roller rolls out of the groove of the positioning wheel and rolls on the outer edge of the positioning roller until the other driving mechanism is separated from one side of the pawl far away from one end of the positioning wheel, and the positioning roller falls into the groove of the positioning wheel again and returns to the initial state.

Preferably, the driving mechanism on one side of the pawl, which is far away from one end of the positioning wheel, comprises an electromagnet and an electromagnet push rod, the electromagnet push rod is arranged in the electromagnet and penetrates through the electromagnet, and an electromagnet push rod reset spring for resetting the electromagnet push rod is arranged on the electromagnet push rod; the driving mechanism on the other side of the sincere son far away from one end of the positioning wheel comprises a travel switch and a travel switch push rod, the travel switch push rod is arranged in the travel switch and penetrates through the travel switch, and a travel switch push rod reset spring enabling the travel switch push rod to reset is arranged on the travel switch push rod.

Preferably, the limiting structure is a stop pin.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model has the advantages of simple structure, the action is reliable, and its structure is small and exquisite is convenient for install to can require nimble positioning position and the quantity of changing according to switchgear, satisfy the actual requirement of a plurality of stations of switch, keep apart in the assurance mechanism, the machinery of ground connection functional position is spacing, prevents the phenomenon that targets in place of crossing of mechanism.

Drawings

FIG. 1 is a schematic structural view of an electric mechanism positioning device for a switch;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic view of the structure of the latch;

fig. 4 is an assembly view of the positioning roller.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Example 1

The utility model provides an electric mechanism positioner for switch, as shown in fig. 1-4, it includes travel switch 1, bent plate 2, travel switch push rod reset spring 3, travel switch push rod 4, torsional spring positioning bolt 5, sincere son positioning bearing 6, sincere son locating pin 7, backing pin 8, torsional spring locating pin 9, reset torsional spring 10, location axle 11, locating wheel 12, mechanism output shaft 13, positioning roller 14, location axle bearing 15, sincere son 16, locating support 17, sincere son reset spring 18, board 19, electro-magnet push rod 20, electro-magnet 21, electro-magnet push rod reset spring 22.

As shown in fig. 1 and 2, the mechanism output shaft 13 is a main output end of the electric mechanism and is directly connected with the high-voltage switch device. When the mechanism output shaft 13 realizes the function, the mechanism output shaft 13 rotates in a circumferential range around the central axis of the mechanism output shaft 13. The mechanism output shaft 13 is required to be stably locked at each station of the isolation/grounding switch in the high-voltage switch, so that accidents caused by the swing of the driving mechanism output shaft in the circumferential range due to the electrodynamic force of the high-voltage switch, the mechanism operation and the like are prevented.

The positioning wheel 12 is integrally formed, and the positioning wheel 12 is arranged on the mechanism output shaft 13 and is fixed and transmitted by a flat key, so that the mechanism output shaft 13 and the positioning wheel 12 synchronously rotate; the positioning support 17 and the mechanism output shaft 13 are installed on the mechanism together, the travel switch 1 is fixed on the bent plate 2 through a screw, a travel switch push rod 4 arranged in the travel switch 1 penetrates through the travel switch 1, and a travel switch push rod reset spring 3 enabling the travel switch push rod 4 to reset is arranged on the travel switch push rod 4. The travel switch 1 is operated by a gasket on one side of a travel switch push rod 4 and a travel switch push rod reset spring 3 on the travel switch push rod 4 (namely, the gasket is fixed on the travel switch push rod 4, the travel switch push rod reset spring 3 is sleeved on the travel switch push rod 4, the travel switch push rod reset spring 3 is arranged between the gasket and the travel switch 1, the travel switch push rod 4 moves left and right to separate or press a button on the travel switch push rod 4 and the travel switch 1), and a bent plate 2 is fixed on a positioning support 17 through a screw. An electromagnet push rod 20 arranged in the electromagnet 21 penetrates through the electromagnet 21, and the electromagnet 21 is fixed on the positioning bracket 17 through a screw. The electromagnet push rod 20 is provided with an electromagnet push rod return spring 22 for returning the electromagnet push rod 20.

The sincere son 16 is installed on the locating support 17 through sincere son locating pin 7 and sincere son locating bearing 6, and the both ends of sincere son locating pin 7 are fixed on the both sides of locating support 17, and sincere son 16 intermediate position is equipped with sincere son locating bearing 6, and sincere son locating bearing 6 overlaps on sincere son locating pin 7 for sincere son 16 rotates around sincere son locating pin 7 of sincere son 16 intermediate position. One side of the latch return spring 18 is fixed by screws on the inner wall of the positioning bracket 17 through a plate 19, the latch 16 is provided with a counter bore 24, and the other side of the latch return spring 18 is abutted in the counter bore 24 of the latch 16 for preventing the latch 16 from freely rotating around the central axis of the latch positioning pin 7. In this embodiment, a counterbore 24 is provided on one side of the lower end of the detent 16.

The stop pin 8 is mounted on the positioning bracket 17, and the stop pin 8 is arranged on the other side of the lower end of the latch 16. In the initial condition, the catch 8 is intended to abut against the catch 16, preventing the catch 16 from rotating too much counter-clockwise according to the configuration in figure 1. The two ends of the positioning shaft 11 are respectively provided with a positioning roller 14, the positioning shaft 11 is positioned below the pawl 16, the positioning rollers 14 can roll along the inner contour of the V-shaped groove in the positioning wheel 12 and can be limited to move up and down in the waist holes 23 of the positioning bracket 17, and the two side plates of the positioning bracket 17 are provided with the waist holes 23 corresponding to each other in the front and back direction. A U-shaped groove is provided in an intermediate position on the outer contour of the positioning wheel 12 (i.e. in the thickness direction of the positioning wheel 12). The reset torsion spring 10 is fixed in the positioning bracket 17 through the torsion spring positioning pin 9, one side of the reset torsion spring is abutted against the torsion spring positioning bolt 5 fixed on the positioning bracket 17, and the other side of the reset torsion spring is abutted against the positioning roller 14, so that the reset torsion spring can be attached to the outer edge of the positioning wheel 12 and can roll in the V-shaped groove. Two reset torsion springs 10 are respectively arranged at two sides of the torsion spring positioning pin 9, and meanwhile, the reset torsion springs 10 are arranged at two sides of the thickness of the pawl 16. After the positioning roller 14 falls into the V-shaped groove, the pawl 16 can prop against a positioning shaft bearing 15 arranged on the positioning shaft 11, so that the positioning roller 14 is ensured to be stabilized in the V-shaped groove opening, the positioning roller 14 and the positioning shaft bearing 15 are assembled on the positioning shaft 11, and the positioning shaft bearing 15 can slide in a U-shaped groove in the positioning wheel 12 to play a role in positioning and supporting.

In this embodiment, 3V-shaped grooves are uniformly distributed on the circumference of the positioning wheel 12. The mechanism output shaft 13 is a reducer output shaft. The radius of one side of the positioning roller 14 close to the positioning shaft bearing 15 is smaller than that of one side of the positioning roller in the kidney hole 23 of the positioning bracket 17. The radius of the side of the positioning roller 14 close to the positioning shaft bearing 15 is the same as the radius of the positioning shaft bearing 15.

A positioning shaft 11, a positioning roller 14 and a positioning shaft bearing 15 are arranged on the V-shaped groove and the circumference of the positioning wheel 12, and the three parts are assembled together to form a positioning roller assembly. The positioning rollers are assembled under each station of the isolating/grounding switch, and fixedly slide in the V-shaped grooves of the positioning wheels 12 to play a positioning role; and when the positioning wheel 12 rotates to each working position, the positioning shaft bearing 15 is tightly attached to the U-shaped groove in the thickness direction of the positioning wheel 12, and plays a role in positioning and guiding.

When the positioning roller is assembled in the V-shaped groove sliding in the positioning wheel, the lower end part of the latch 16 is tightly attached to the circumferential surface of the positioning shaft bearing 15 in the positioning roller assembly, and the positioning roller assembly is prevented from further sliding.

Under the action of the reset torsion spring 10, the positioning roller can be tightly attached to the outer circumferential surface of the positioning wheel 12, the V-shaped groove and the U-shaped groove in the width direction.

The principle of the utility model is as follows:

1. the two sides of the positioning shaft 11 are kept in the first V-shaped groove of the positioning wheel 12 under the action of the reset torsion spring 10, the pawl 16 is abutted against the positioning shaft bearing 15 under the action of the pawl reset spring 18 to prevent the positioning roller from assembling and moving, the positioning roller is assembled and locked in the first V-shaped groove of the positioning wheel 12 at the moment, and the positioning wheel 12 and the mechanism output shaft 13 are in rigid key connection, so that the safety and the reliability of the positioning of the mechanism output shaft 13 are ensured, as shown in fig. 2.

2. The control circuit sends out a signal, the electromagnet 21 is electrified and attracted, so that the electromagnet push rod 20 pushes the latch 16 to move leftwards, the latch 16 pushes the travel switch push rod 3, the travel switch 1 is released, and the locking state is released.

3. After the travel switch 1 is released, the positioning roller assembly can slide out of the first V-shaped groove, the motor loop runs by the aid of the power-on motor, the positioning wheel 12 is driven by the mechanism output shaft 13 to rotate, and the positioning wheel 12 pushes the positioning roller assembly to move along the waist hole 23 of the positioning support 17 and the outer surface of the positioning wheel 12.

4. The electromagnet 21 is reset when power is lost, and preparation is made for stopping in place. The positioning wheel 12 is driven by the mechanism output shaft 13 to continuously run, and the positioning roller assembly moves along the outer surface of the positioning wheel 12; meanwhile, the positioning roller assembly prevents the pawl 16 from being assembled and reset with the travel switch 1, so that the control circuit is continuously electrified.

5. The two sides of the positioning roller assembly move into a second V-shaped groove along with the positioning wheel 12 under the action of the reset torsion spring 10; meanwhile, the travel switch push rod 4 resets under the action of the travel switch push rod reset spring 3, a control loop is cut off, and the positioning wheel 12 stops rotating; the detent 16 is reset by the detent return spring 18, preventing the positioning roller from assembly movement, thus ensuring the safety and reliability of the positioning of the output shaft.

6. Repeating the steps 1-5 to reach the third V-shaped groove from the second V-shaped groove, and the like.

Example 2

In this embodiment, the travel switch push rod 4 and the electromagnet push rod 20 in embodiment 1 are both changed into pull rods, and the connection with the pawl 16 is a pulling connection.

The rest is the same as in example 1.

Example 3

In this embodiment, the return torsion spring pressing on the positioning roller 14 is changed to a return compression spring.

The rest is the same as in example 1.

Example 4

In this embodiment, the positioning wheel 12 is formed by separate machining.

The rest is the same as in example 1.

Example 5

In this embodiment, 2 arc-shaped grooves are uniformly distributed on the circumference (i.e. on the outer contour) of the positioning wheel 12.

The rest is the same as in example 1.

Example 6

In this embodiment, the grooves uniformly distributed on the outer contour of the positioning wheel 12 are trapezoidal grooves.

The rest is the same as in example 1.

Claims (10)

1. A positioning device of an electric mechanism for a switch is characterized by comprising a mechanism output shaft (13) and a positioning support (17) which are connected with a switch device, wherein a positioning wheel (12) which synchronously rotates with the mechanism output shaft is fixed on the mechanism output shaft (13), a pawl (16) which rotates around a pawl positioning pin (7) is arranged on the positioning support (17), one side surface of one end, close to the positioning wheel (12), of the pawl (16) is connected with the positioning support (17) through a pawl reset spring (18), a limiting structure which prevents the excessive rotation of the pawl (16) is arranged on the other side surface, corresponding to one end, close to the positioning wheel (12), of the pawl (16) on the positioning support (17), a waist hole (23) is arranged on the positioning support (17), a positioning roller assembly which enables the pawl (16) to be supported after rotating is arranged at the position, positioned in the waist hole (23), and comprises a positioning roller (14) and a positioning shaft (11), be equipped with in waist hole (23) along the locating roller (14) of waist hole (23) length direction motion, locating roller (14) cover is on location axle (11), the equipartition has 2 at least grooves that make locating roller (14) roll in and roll out on the outline of locating wheel (12), be equipped with one end on locating support (17) and press the reset spring on locating roller (14), the both sides that locating wheel (12) one end was kept away from in sincere son (16) are equipped with respectively and are used for driving sincere son (16) to both sides pivoted actuating mechanism, the actuating mechanism of both sides all fixes on locating support (17).

2. The positioning device for the switch motor mechanism according to claim 1, characterized in that the positioning bracket (17) is fixedly connected with a bent plate (2), and a travel switch (1) is fixed on the bent plate (2).

3. A positioning device of an electric mechanism for a switch according to claim 1, characterized in that said detent positioning pin (7) is arranged in the middle of the detent (16), further comprising a detent positioning bearing (6), the detent positioning bearing (6) being fitted over the detent positioning pin (7).

4. A positioning device of an electric mechanism for switches according to claim 1, characterized in that one side of said latch return spring (18) is fixed to the positioning bracket (17), the latch (16) is provided with a counter bore (24), and the other side of the latch return spring (18) is abutted in the counter bore (24) of the latch (16).

5. The positioning device for the switch electric mechanism according to claim 1, characterized in that the uniformly distributed grooves on the outer contour of the positioning wheel (12) are V-shaped grooves, arc-shaped grooves or trapezoidal grooves.

6. The positioning device of the switch electric mechanism according to claim 1, wherein the reset spring pressed on the positioning roller (14) is a reset torsion spring (10), the reset torsion spring (10) is fixed in the positioning bracket (17) through a torsion spring positioning pin (9), one side of the reset torsion spring (10) abuts against a torsion spring positioning bolt (5) fixed on the positioning bracket (17), and the other side of the reset torsion spring (10) abuts against the positioning roller (14).

7. A positioning device for a switching motor according to claim 1, characterized in that said return spring pressing against the positioning roller (14) is a return compression spring.

8. The positioning device for the switch electric mechanism according to claim 1, characterized in that a U-shaped groove is arranged at the middle position on the outer contour of the positioning wheel (12); the positioning roller assembly further comprises a positioning shaft bearing (15), and the positioning shaft bearing (15) capable of sliding in the U-shaped groove is arranged on the positioning shaft (11).

9. A positioning device for a switch motor mechanism according to claim 1, characterized in that in the initial state, the positioning roller (14) falls into the groove of the positioning wheel (12), one end of the detent (16) close to the positioning wheel (12) is pressed against the positioning roller (14), and the other side of the detent (16) far from one end of the positioning wheel (12) is in contact connection with a driving mechanism;

when the other driving mechanism drives one end of the pawl (16) far away from the positioning wheel (12) to move towards one side, the positioning wheel (12) rotates, the positioning roller (14) rolls out of the groove of the positioning wheel (12) and rolls along the outer edge of the positioning roller (14) until the other driving mechanism is separated from one side of the pawl (16) far away from one end of the positioning wheel (12), and the positioning roller (14) falls into the groove of the positioning wheel (12) again to return to the initial state.

10. The positioning device of an electric mechanism for a switch according to claim 1 or 9, wherein the driving mechanism of one side of the latch (16) far away from one end of the positioning wheel (12) comprises an electromagnet (21) and an electromagnet push rod (20), the electromagnet push rod (20) is arranged in the electromagnet (21) and penetrates through the electromagnet (21), and an electromagnet push rod reset spring (22) for resetting the electromagnet push rod (20) is arranged on the electromagnet push rod (20); the driving mechanism of the other side of the pawl (16) far away from one end of the positioning wheel (12) comprises a travel switch (1) and a travel switch push rod (4), the travel switch push rod (4) is arranged in the travel switch (1) and penetrates through the travel switch (1), and a travel switch push rod reset spring (3) enabling the travel switch push rod (4) to reset is arranged on the travel switch push rod (4).

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