RU2046432C1 - Hand lever drive of disconnecting switch - Google Patents

Abstract

FIELD: electrical engineering. SUBSTANCE: hand lever drive of disconnecting switch has frame, handle and fixing arm. Handle is fabricated in the form of plate in which round hole rotation axle is put. Fixing arm is placed on frame. Drive is additionally fitted with supporting and guiding bushings, supporting plate and three grounding bosses. Frame is composed of two parallel angle pieces with supporting plate being positional perpendicular to them. Handle has oval holes arranged in symmetry to rotation axle. Supporting and guiding bushings are fixed immobile on supporting plate. Rotation axle of handle is put into supporting bushing, guiding bushing is installed above supporting bushing opposite to one of oval holes of handle. Fixing arm manufactured in the form of rod with limiters is put into guiding bushing. Fixing arm in its turn is mounted for movement in guiding bushing and oval hole of handle. One of grounding bosses is anchored on frame, other one on handle. Specified bosses are intercoupled with flexible wire. Boss on handle is mounted uniaxially to rotation axle of handle. Third grounding boss is anchored on frame. EFFECT: enhanced operational reliability. 3 cl, 6 dwg

Description

 The invention relates to electrical engineering, in particular to a lever actuator designed to manually turn on and off high-voltage disconnectors.

 Known manual lever actuators [1] which are manufactured with handles 200, 250, 350 and 425 mm long. The statistical effort on the handle of the manual drive when operating the main knives of the disconnector should not exceed 245 N (25 kgf). When operating the drive with a push, the knife of the disconnector is configured to enter and exit the contact.

 The disadvantages of the analogue: the complexity and intensity of the structure, unreliability in operation.

 Known manual lever actuator of the disconnector [2] containing the base, a rigid connection and a handle. When impacted on the handle, a smooth action on the contact knife of the disconnector is carried out.

 The disadvantages of the analogue: design complexity, metal consumption, unreliable operation.

 Known manual lever actuator disconnector [3] which has a frame (base) and a handle. The frame is fastened to the post with studs. The connection of the disconnector rod with the handle is carried out using the axis, which is installed in the round hole of the handle. A traction fork is mounted on the axle. The drive lock is made in the form of a screw, i.e. a threaded sleeve is welded onto the frame, into which a screw is screwed, resting against the handle and securing it. Thus, the manual lever actuator of the disconnector comprises a frame and a handle, in the round hole of which a rotation axis is installed, and a latch which is located on the frame.

 The disadvantages of the prototype: the complexity of the design, large dimensions, material consumption, unreliability of fixation due to the appearance of mechanical deformation of the fixing screw and handle at the place of fixing and scrolling the handle.

 The basis of the invention is the task of creating a manual lever actuator of the disconnector, in which a new embodiment of the mechanism for manually turning on and off the disconnector provides improved design, reduced dimensions and increased reliability during operation, and due to this, the overall dimensions and weight are reduced (i.e., the design is easier due to the use corners of the corresponding profile), the reliability of the drive during operation increases due to changes in the design of the latch and the design of the frame and handle, ue retainer stops eliminates spontaneous Unlocking actuator, the actuator is provided reliable fastening to the pole disconnector.

 The proposed manual lever actuator of the disconnector is additionally equipped with a support and guide bushings, a support plate, three grounding bosses, while the frame consists of two parallel angles, the support plate is fixed perpendicular to it, oval holes are made in the handle, which are located symmetrically to the axis of rotation, motionless on the base plate the support and guide bushings are fixed, the axis of rotation of the handle is inserted into the support sleeve, and the guide bush is installed above the support and opposite one of the ial holes.

 A latch is inserted into the guide sleeve, which is made in the form of a rod with stops. The latch, in turn, is installed with the possibility of movement in the guide sleeve and in the oval hole of the handle. The retainer stops are mounted to move parallel or along the axis of the oval hole.

 One of the grounding lugs is mounted on the frame, and the other on the handle. These grounding bosses are connected by a flexible wire. The third grounding boss is mounted on the frame. The handle is made in the form of a plate. The grounding lug on the handle is mounted coaxially with the axis of rotation of the handle.

 The causal relationship lies in the fact that the entire above set of essential features, both individually and together, provides the fulfillment of the task of the invention to improve the design, reduce the size and increase reliability during operation.

 Figure 1 shows the installation of a manual lever drive disconnector; figure 2 shows a manual lever drive disconnector; in Fig. 3, view A in Fig. 2; figure 4 view B in figure 1; 5 and 6, a corner of the frame.

 The manual lever drive of the disconnector, designed to manually turn on and off the high-voltage disconnector 1, consists of a frame 2 and a handle 3. The frame consists of two parallel corners 4, the support plate 5 is installed perpendicular to it. The corners have oval holes 6 for mounting the drive to the brackets 7, which are fixed on drain 8 (pillar). The support plate 5 serves as a support for mounting the handle 3 and the retainer 9 of the drive. On the plate 5, two bushings 10 and 11 are fixedly fixed, which perform the functions of sliding bearings. An axis of rotation 12 of the handle 3 relative to the frame 2 is inserted into the support sleeve 10. A latch 9 made in the form of a rod is inserted into the guide sleeve 11. The latch 9 has a limiter 13 and 14 movement. Two grounding bosses 15 and 16 are attached to the frame 2, one of which serves to connect the common grounding of the drive, the other (16) to connect the flexible grounding wire 17, which connects the frame 2 and the handle 3.

 The handle 3 of the actuator consists of a plate 18 having oval holes 19 for fixing and several round holes 20. Oval holes 19 are symmetrical to the axis of rotation 12. The axis 12 of rotation of the handle 3 relative to the frame 2 is installed in one of the circular holes 20 of the plate 18 and is welded. An axis 21 is mounted in the upper circular hole 20 of the plate 18, to which the plug 22 of the rod 23 of the high-voltage disconnector 1 is attached. The stops 13 and 14 of the latch 9 are installed perpendicular to the axis of the oval hole 19 of the handle 3. A metal handle 24 is welded to the plate 18 of the handle 3, which is used for work drive, and grounding boss 25.

 The latch 9, made in the form of a rod with perpendicularly welded stops 13 and 14, moving in the guide sleeve 11, enters the opposite oval hole 19 of the handle 3, thereby ensuring the fixation of the drive. The stops 13 and 14 are used to fix the rod 9 from accidental movements and to move the locking rod 9 in the guide sleeve 11.

The handle 3 with the frame 2 are connected using the axis of rotation 12, which rotates the handle through an angle of 180 ^about .

 The drive has the “Enabled” and “Disabled” positions.

 Manual lever drive disconnector operates as follows.

 In the on or off position of the disconnector 1, holding the stop 13 and placing the stop 14 parallel or along the axis of the oval hole 19, the drive is locked and unlocked. During fixing, the locking rod 9 is pushed into the oval hole 19 in the handle 3 and the stopper 13 is installed perpendicular to the axis of the oval hole 19. To unlock the drive, the stopper 14 must be installed along the axis of the oval hole 19, thereby the locking rod 9 is extended from the hole 19 in the handle 3.

 Grounding of the drive is provided by connecting the grounding loop to the ground boss 15, which is welded to the frame 2. Grounding of the handle 3 is provided by connecting a flexible wire 17 of the ground bosses 16 and 25. In the off position of the actuator, the second oval hole 19 is located in place of the first.

 The invention allows to reduce the size and weight of the manual lever actuator of the disconnector (i.e., to facilitate the design due to the use of elbows of the corresponding profile), to increase its reliability during operation by changing the design of the latch and the design of the frame and handle, and to exclude spontaneous unlocking of the drive due to the use of limiters latch, to ensure the reliability of fastening the drive of the high-voltage disconnector to the pole.

Claims (3)

 1. MANUAL LEVER ACTUATOR OF THE DISCONNECTOR, comprising a frame and a handle, the latter is made in the form of a plate, in which a rotation axis is mounted in a round hole, a latch located on the frame, characterized in that it is additionally equipped with support and guide bushings, a support plate, three grounding bosses , the frame is made in the form of two parallel corners, perpendicular to which the support plate is fixed, oval holes are made in the handle plate, while the support and the directions are fixedly fixed on the support plate the guide sleeve, and the axis of rotation of the handle is inserted into the support sleeve, and the guide sleeve is installed above the support and opposite one of the oval holes, a latch made in the form of a rod with stops is installed in the guide sleeve, mounted to move in the guide sleeve and oval hole, and the limiters are installed with the possibility of moving parallel or along the axis of the oval hole, with two grounding bosses attached to the frame, and the third on the handle, while one of the grounding bosses and b the knob on the handle are interconnected by a flexible wire.  2. The drive according to claim 1, characterized in that the grounding lug on the handle is mounted coaxially with the axis of rotation of the handle.  3. The drive according to claim 1, characterized in that the oval holes on the handle plate are symmetrical to the axis of rotation of the handle.

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