SE1351097A1 - Trigger device for a shooter - Google Patents

Abstract

Release device for a contactor in the form of an electric vacuum switch (6) with at least two contacts (7; 8), in order to achieve a current flow, are movable relative to each other. The shaft (13) standing under spring pressure (12) affects at least one contact. In addition, there is a lock which holds the axle (13) against the spring pressure (12) out of engagement. To release the detent, there is a drive means (21).

Description

15 20 25 30 35 known vacuums are in their partially complicated technical construction.

The object of the invention is to provide a trigger device for a contactor, the trigger time of which is clearly reduced. In addition, the contactor must ensure a high level of fault safety and also be favorable to manufacture.

This task is solved by the features of claim 1.

The contactor denotes a switch which, by disconnecting it, secures the wires and device (eg motors) against overcurrents and for own voltages.

With a vacuum switch, the present application relates to a structural form of a high-power switch in electrical energy technology. The vacuum switch is characterized in that the contacts for reducing an undesired switching arc are arranged in an airless space (vacuum).

The invention relates to a release device for a contactor, wherein the contactor is in the form of an electric vacuum switch, which has at least two contacts. The contacts are movable relative to each other to achieve a current flow. One contact of the vacuum switch is Lex. attached to the switch housing. The second contact of the vacuum switch is indirectly connected to a shaft via a contact wire. The shaft under pressure of a compression spring acts on at least one of said at least two contacts.

According to the invention, a locking device is provided, which holds the shaft against the spring pressure out of engagement, wherein a drive means is provided for releasing the locking device. When the compression spring is expanded, the compression spring transfers the kinetic energy stored in the compressed compression spring to the shaft. The vacuum contactor is useful as a power disconnector for almost all high voltage areas. The vacuum contactor thereby utilizes the extremely high electrical stability of vacuum. Due to the small number of ion molecules available for ionization, it is possible to extinguish the otherwise occurring switching arc even at very small switching part distances. In this way, very high voltages can be mastered, without there being a current change.

Another preferred embodiment of the invention ensures that at the head of the axle the contacts are actuating and are moved in a housing plate axially movably. contact ring arranged.

The contact ring is on its side facing away from the shaft connected to the at least one contact of the vacuum contactor. In an opening of the housing plate, there are contact springs which are responsible for maintaining the current-carrying contact between the housing plate and the contact ring. The contact springs are arranged at the inner periphery of the opening of the housing plate and directed towards the center of the opening. The contact springs ensure that even during the axial control of the contact ring in the housing plate, there is an uninterrupted current flow between the housing plate and the contact ring.

A further preferred embodiment of the invention ensures that the locking consists of a locking mechanism stored in a housing, of which one arm engages the drive means and another arm clamps the compression spring. Both arms have one arm engaged with the other arm, respectively.

Depending on the size and size of the contactor, the compression spring and arms can be designed with different thicknesses and shapes. This makes it possible to adapt the arm mechanism to the size of the compression spring, so that the compression spring in the rest position of the release device remains compressed. The arm which engages the drive means is designed as a closing arm and is pivotally articulated arranged at a structural part of the release device. The other arm of the arm mechanism is in the form of a support arm.

The closing arm has at least one receiving groove in which the suture arm engages when the compression spring is compressed in the vibration position.

Both the closing arm and also the support arm are designed as double-swing arms. In the resting state, in which the compression spring is compressed, the support arm rests in the closing arm. The support arm is pivotally arranged at a U-profile which together with an opposite U-profile forms an inner chamber.

In addition, a preferred variant of the invention shows that the release device has a pneumatic and / or hydraulic and / or mechanical drive means. Depending on the area of use, the trigger device can also be used, an electromagnetic drive means. The discharge device then comprises lines which make the compressed air or the hydraulic oil available. At the electromagnetic drive means there is a coil in which a magnetic field is formed during current transmission.

Preferably, the drive means has a slidable piston which engages the arm of the tilisiutnirigs arm.

The Koiven is triggered by applying a remote-controlled contact to the pneumatic, hydraulic, mechanical or electromagnetic drive means. The contact causes the extendable piston to be taken out of the housing of the drive means. The piston acts on the arm of the attachment arm so that the closing arm pivots around its pivot point and releases the support arm.

According to another preferred embodiment, the contactor and the locking device are arranged in a common housing. The common housing is then divided on its inside into a mechanical chamber and into an electric chamber. Both chambers are separated from each other by a wall.

In addition, it is tilisett that at the outside of the house a handle is arranged for influencing the locking. The handle can be designed as an access flap. The access jaw is pivotally arranged at the outer periphery of the common housing. In the rest condition of the release device, the access shaft abuts against the outer periphery of the common housing. The access flap abutting the common housing covers an opening which breaks through the side wall of the common housing. With expansion of the compression spring, the support arm makes a pivotable travel in the direction of the opening covered by the access flap.

If the vacuum switch is closed, the support arm extends with its upper end through the opening of the common housing.

In this way, the access jaw pivots about its point where it is articulated arranged at the outer periphery of the joint. the housing to a position in which the access flap extends at an angle to the outer wall of the housing. The access flap can be pressed against the support arms from the outside and pivoted to a position in which the access flap abuts against the outer wall of the housing. The access flap then affects the support arm in such a way that it pivots in the direction of the shaft. The support arm is thus brought to a position in which it engages in the receiving groove of the attachment arm.

According to another embodiment of the invention, a flap is arranged at the switch housing in the area of the upper end of the support arm. The flap is pivotally conductively arranged at the housing and enables access of the support arm.

The invention furthermore provides that the closing arm preferably has at least one receiving groove. According to another advantageous embodiment of the invention, the support arm has at least one naked. The hook serves to engage the support arm at the release arm.

In addition, it is provided that the support arm is preferably pivotable to a closing position and to an open position. The support arm is connected directly via the cross pin to the compression spring. Depending on the expansion or contraction of the compression spring, the support arm is pivoted to a closed position and to an open position, respectively.

In addition, it can be ensured that the U-profiles have pivot points. The pivot points serve to pivot the tilt arm and the support arms relative to the U-profile. In the following, the invention will be described in more detail by way of example and without limitation of the general nature by means of an exemplary embodiment shown in the drawing.

In this case: Fig. 1 shows the release device in side view, with the support arm according to the invention in open position, Fig. 2 the release device. in a side section with the support arm according to the invention in connection position, Fig. 3 the trigger device in explosion view, Fig. 4 the contact ring inserted in the housing plate, Fig. 5 the housing plate equipped with contact springs and Fig. 6 a schematic view of the trigger device.

Fig. 1 shows a switch housing 1 of the electric switch according to the invention. The electrical switch comprises an electrical chamber 3 and a mechanical chamber 4. The two chambers 3; 4 are delimited from each other by a wall 5. In the electric chamber 3 a vacuum switch 6 is arranged, which comprises two switch contacts 7 and 8. The two coil contactors 7 and 8 are arranged in the coil housing 1 of the vacuum switch 6. The vacuum switch 6 is connected with its upper switch contact 7 to an electrically conductive conductor cable 10. At its lower end and adjacent to the mechanical chamber 4 is the switch contact. 8 attached to a contact ring 11. In the mechanical chamber 4 a compression spring 12 is shown. Axially inside the windings of the compression spring 12 a shaft 13 is arranged.

With the reference numeral 14 a cross pin is shown, which penetrates the shaft 13. With its cross pin 14 the shaft 13 rests against the compression spring 12. In the interior of the mechanical chamber 4 an inner chamber 16 is arranged, the fold comprising a first and a second U-profile. 17; 18.

U-profiles 17; 18 interlock and are connected to each other by their legs. The shaft 13 penetrates the two U-profiles 17; 18 in the area of their abutting lower and upper legs, respectively. The shaft 13 is anchored with its foot in the legs of the U-profile 17; 18, which are located at a distance from the contact ring 11. The compression spring 12, which surrounds the shaft 13 with its windings, indirectly influences the contours 34 of the support arm 26 via the cross pin 14 (Fig. 1).

The shaft 13 extends axially inside the mechanical chamber 4 of the switch housing and breaks through the wall 5, which separates the two chambers 3 and 4 from each other. inside the electric chamber 3, the shaft 13 penetrates the contact ring 11. The contact ring 11 is then attached to the shaft 13. The contact ring 11 is inserted in a housing plate 19. At the inner periphery of the housing plate 19, as shown in Fig. 4, contact springs 20 are arranged. 10 15 20 25 30 35 While maintaining the electrical contact, the contact ring 11 is movable. axially and / or radially inside the housing plate 19. The contact springs 20 serve as well! during axial as well as during radial travel of the contact ring 11 inside the housing plate 19 to maintain the electrical contact between the contact ring 1.1 and the housing plate 19.

The contact ring 11 is on the one hand attached to the shaft 13 and on the other hand connected to the switch contact 8 of the vacuum switch 6. A movement of the shaft 13 in and against the direction of movement of the compression spring 12 axially inside the switch housing 1 leads to an axial movement of the contact ring 11 inside in the housing plate 19.

Due to the axial displacement of the shaft 13 inside the switch housing 1, the distance of the switch contact 8 of the vacuum nozzle switch 6 relative to the switch contact 7 of the vacuum switch 6. It is possible to reduce or increase the distance of the switch contact 7 relative to the switch contact 8. In the mechanical chamber 4 there is a drive means 21 which via a piston 40 acts on a long leg 22 of a connecting arm 23. The closing arm 23 is pivotally mounted around a pivot point 24 at the U-profile 18. The piston 40 of the drive means 21 can be actuated remotely or in any other way. With the action of the piston 40, the closing arm 23 pivots about: the pivot point 24.

The long leg 22 of the closing arm 23 pivots in the direction of the mechanical chamber 4. The short leg 25 of the closing arm 23 pivots in the opposite direction downwards towards the compression spring 12. When pivoting the closing arm 23 about the pivot point 24 releases the short the leg 25 of the closing arm 23 has a support arm 26. The support arms 26 are pivotally arranged around a pivot point 27 at the U-profile 18. At the end of the support arm 26 remote from the pivot point 27, the support arm 26 has hooks 28. The members 28 of the support arm 26 are arranged to engage in the receiving grooves 29 of the support arm 23 in the closed position of the support arm 26. The closing position of the support arm 26 is shown in Fig. 2. In Fig. 1 the support arm 26 is in the open position 31.

The upper end of the support arm 26 provided with the hooks 28 extends in the open position 31 through an opening 33 of the ornamental copy housing 1. in open position 31 the support arm 26 presses against a flap 32. The flap 32 is conductively arranged at the ornamental copy housing 1 and in Fig. 1 with its lower end indicated at a distance from the switch housing 1.

Fig. 1 shows the compression spring 12 in a relaxed state. The compression spring 12 presses against the cross pin 1.4 and displaces the shaft 13 in the direction of the electrical chamber 3. The cross pin 14 engages a contour 34 of the support arm 26, whereby the support arm 26 pivots about the pivot point 27 in the direction of the opening 33.

With reference numeral 35, a position sensor is shown, which provides information about the respective position on the shaft 13.

Fig. 2 shows an electrical switch corresponding to that of Fig. 1, with the difference that the switch is shown in section along the closing arm 23. The support arm 26 is pivoted back about the pivot point 27 to the tilting position 30 and now extends approximately axis-parallel to the axis 13. The contour 34 of the support arm 26 compresses the compression spring 12 indirectly via the cross pin 14 against the leg of the U-profiles 17; 18. The hooks 28 of the support arm 26 engage in the closing position 30 of the support arm 26 in the receiving grooves 29 of the closing arm 23. The drive means 21 is not activated and the closing arm 23 extends approximately horizontally relative to the pivot point 24. In closing position 30 of the support arm 26 the closing arm 23 of the coil 40 of the drive means 21 in approximately horizontal position. The closing arm 23 thereby secures the support arm 26 against the expansion force of the compression spring 12 from pivoting about the pivot point 27. When the support arm 26 is in the closing position 30, the flap 32 is closed and rests in its articulation point against the switch housing 1. Figs. screws 36 with one of which the upper switch contact 7 of the vacuum switch 6 is attached to the electrically conductive conductor plate 10. A further screw 36 connects the switch contact 8 of the vacuum switch 6 to the contact ring 11.

Reference numeral 1 denotes in switch 3 the switch housing. In the assembled state, the horn coupler housing 1 is closed with a cover 37. The shaft 13 is arranged over the compression spring 12 and has the transverse pin 14 running transversely to the shaft 13. Below the transverse pin 14 the position sensor 35 is arranged. To fasten the shaft 13 relative to the legs of the U-profiles 17; 18 there is a fuse ring. At the end of the shaft 13 which is opposite to the compression spring 12, a support surface can be seen against which, in the assembled state, the contact ring 11 lies.

Relative to the shaft 13 above the contact ring 11, the housing plate 19 is shown, which has an opening 33, which is equipped with contact springs 20, which are directed in the direction of the opening side. A vacuum switch 6 is shown between the housing plate 19 and the conductor plate 10. The vacuum switch 6 comprises the upper switch switch 7 and the shaft-sided lower switch switch 8. When the switch switches 7; 8 of the vacuum switch 6 are connected by closing the release device according to the invention, the circuit for realizing the function of the switch as a bypass switch is closed. The U-profiles 17 are shown on both sides of the shaft 13; 1.8, which forms it. the inner chamber 16. For this purpose, the legs of the U-profiles 17 engage; 18 in each other with mold connection. On one side of the shaft 13 is shown the closing arm 23, which in the assembled state is pivotally arranged around the pivot point 24 of the U-profile 18. At the short leg 25 of the attachment arm 23, the receiving grooves 29 are arranged. Floating lying on the other side of the shaft 13, the support arm 26 is shown pivotally arranged about a pivot point 27 of the U-profile 18. in Fig. 3 the pivot points 24 and 27 are arranged on the side at the U-profile 18. at different height levels. The relative shaft 13 is shown behind the U-profile 18 the support arm 26. The support arm 26 has at its upper end the hooks 28 which are arranged for operative connection with the receiving grooves 29 of the closing arm 23. The relative shaft 13 is arranged behind the support arm 26 the jaw 32 which is in assembled condition arranged next to the horn coupler housing 1.

Approximately parallel to the axis with the axis 13 extends inside the U-profiles 17; 18 shows the inner chamber 16 of the drive means 21.

The drive means 21 are in communication via a coefficient 40 with the closing arm 23. In the interior of the switch housing 1, guides 38 for the conductor plate 10, the housing plate 19 and the shaft 13 are seen. To attach the switch housing 1 to a support structure, there is at the front side of the switch housing 1 a mounting rail 39.

The contact ring 11 and the housing plate 19 are connected to each other in Fig. 4 via the contact springs 20. In the case of axial displacement of the contact ring 11 inside the housing plate 19, in this way a current flow exists between the housing plate 19 and the contact ring 11. The contact ring 11 has a reach! 42; 43. The hole 42 serves as a screw connection for the contact ring 11 with the switch contact 7 and the hole 43 serves as a screw connection for the contact ring 11 with the shaft 13.

The housing plate 19 is shown in Fig. 5 in perspective view. In the opening 33 of the housing plate 19, the contact ring 11 attached to the shaft 13 is moved in the assembled condition. In the case of axial or radial movement of the contact ring 11 inside the housing plate 19, the live contact between the contact ring 11 and the housing plate 19. The current-carrying contact is ensured by abutting the contact ring 11 against the contact springs 20 of the housing plate 19. Fig. 6 schematically shows a arranged position sensor with reference numeral 35. When the locking of the release device for the contactor is in the resting position, the compression spring 12 holds the shaft 13 against the spring pressure out of engagement. To release the detent, there is a drive means 21, which is shown in the form of a magnet. In addition, a position sensor 35 indicates whether the release device for the contactor is locked, or whether the release device is released from its locking.

The position sensor 35 has two switch positions. in normal case, the trigger device for the contactor is not affected and the switch contacts? ooh 8 of the vacuum switch 6 are broken. in this position, the switch contact 49 of the position sensor 35 is open and the switch contact 50 of the position sensor 35, on the other hand, is closed. A circuit 46 between a drive device 47 and an element 48 is closed.

As soon as the trigger device is activated by the drive means 21, the switch switch contact 50 is opened. If the circuit 51 is closed, a current voltage is applied to the magnet 54 of the additional drive means 52.

Fig. 6 shows the position sensor 35 designed as a micro-switch with a magnet 54 of a mechanical switch device 53.

The mechanical switch device 53 is only schematically shown.

The magnet 54 triggers the mechanical switch device 53, which in turn releases a signal that the trigger device for the contactor is activated by releasing the detent of the drive means 21. At the same time, the switch device 53 disconnects the power supply of the magnet 54 of the further drive means 52 by breaking the circuit 51.

In addition, in Fig. 6, there is a safety switch (snapper switch) 55, which maintains a continuous current voltage E circuit 46. Through the safety switch 55, the drive device 47 is connected to a Low-Side drive device 55. 10 15 20 25 30 35 14 HÄNVESNINGSBETECKNENGAR switch housing electrical chambers mechanical chamber wall vacuum switch omkoppiarkontakt lead-rplatta contacting pressure spring ear rung internal chamber U-shaped housing plate contact spring drive means [meadow leg tillslutnšngsarm pivot tilislutníngsarm shorter leg support arm vrídpunkt pawl receiving groove tillslutningsfäge open flap opening contour position sensor screws overlay control attachment rail 10 40 42 ; 43 46 47 48 49 51 52 35 54 15 piston hole current circuit driver device element switch contact kt circuit driver switch device magnet

Claims (12)

10 15 20 25 30 35 16 Patent claims Release device for a contactor in the form of an electric vacuum switch (6) with at least two contacts (7; 8), which for moving a current flow are movable relative to each other, characterized in that an axis under the pressure of a spring (12) (13) affects at least one contact and that there is a locking device which holds the shaft (13) against the pressure of the compression spring (12) out of engagement, whereby for releasing the lock there is a drive means (21). Release device according to Claim 1, characterized in that at least one contact (7; 8) acting on a shaft (7; 8) and arranged in a housing plate (19) in a axially movable core actuation (tt) is arranged. Release device according to claim 2 or 2, characterized in that the locking consists of an arm mechanism (23; 26) stored in a housing (1), one arm (23) of which engages the drive means (21) and another arm. clamps the compression spring (12) and both arms (23; 26) have a respective, with the other arm (26) engaged,. Trigger device according to one or more of claims 1; 2, characterized in that the release device has an electromagnetic and / or pneumatic and / or hydraulic and / or mechanical drive device (21). Dispensing device according to one or more of claims 1; 2; 4, characterized in that the drive means (21) has a extendable cage (40) which engages with one arm of one arm (23). Dispensing device according to claim t, that the contactor and the locking device are arranged in a common housing (t). TO 15 20 17 Release device according to Claim 6, characterized in that a handle is arranged on the outside of the housing (t) for influencing the locking. Trigger device according to one or more of claims 3; 6; 7, characterized in that a flap is arranged at the housing (1) in the area of the upper end of the support arm (26). Release device according to one or more of claims 1; 3; 6, characterized in that a peephole arm (23) has at least one receiving groove (29). 10. Release device according to one or more of claims 1; 3; 6, characterized in that a support arm (26) has at least one naked (28). Trigger device according to one or more of claims 1; 3; 6, characterized in that the support arm (26) is pivotable to a peel-closing position (30) and to an open position (31). Trigger device according to Claim 1, characterized in that the U-profiles (17; 18) have pivot points (24; 27).