CN216849762U - Mechanical limiting device of electric spring mechanism - Google Patents

Abstract

The utility model discloses a mechanical limiting device of an electric spring mechanism, belonging to the technical field of power equipment, comprising a base, a driving mechanism and a limiting mechanism; the driving mechanism comprises a driving wheel, a telescopic mechanism and an output shaft, and the driving wheel is connected with the telescopic mechanism; the output shaft is arranged on the base and connected with the telescopic mechanism; the limiting mechanism comprises a limiting part and a telescopic blocking part, the limiting part is fixed on the output shaft, the telescopic blocking part is fixed on the base and can block the telescopic blocking piece, one side of the driving wheel, which is close to the telescopic blocking part, is provided with two protruding parts in the vertical direction, and the protruding parts can compress the telescopic blocking piece. The utility model discloses electric spring mechanism's of example mechanical stop device, design mounting structure is simple, the dependable performance, and economic cost is low, is suitable for quick earthing switch spring operating device's operational requirement.

Description

Mechanical limiting device of electric spring mechanism

Technical Field

The utility model relates to a power equipment technical field especially relates to a mechanical stop device of electronic spring mechanism.

Background

With the development of electric power utilities, high-voltage switch equipment is also greatly developed, and the requirements of modern power distribution systems and power utilization systems on the switch equipment are higher and higher, so that the electric operation of the grounding switch must be improved, the intellectualization of the grounding switch in various aspects such as monitoring, control and protection is promoted, and the accuracy and the reliability of an electric spring operating mechanism of the grounding switch are improved.

With the wide application of the electric spring operating mechanism, the operational reliability of the electric spring operating mechanism is more and more concerned. The spring operating mechanism performs opening and closing control operation by utilizing energy stored by stretching and compressing a spring in the mechanism. Particularly, the action of the quick grounding switch requires that the mechanism has good mechanical reliability, and the action is instantly and accurately in place, so that timely disconnection can be ensured when a fault occurs.

In production and assembly, the quick grounding spring operator with electrical limiting can generate output shaft displacement when storing energy, so that the output angle is reduced, the contact of the grounding switch body cannot be separated and combined in place, the insulation distance is insufficient, and potential accidents such as burning out of the contact are caused. Therefore, a set of mechanical limiting device with reliable action needs to be manufactured, and the purpose is to ensure that the output shaft of the operating mechanism does not have the displacement phenomenon when the spring stores energy.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiencies in the prior art, the utility model aims at providing a mechanical stop device of 110kVGIS quick earthing switch electric spring operating mechanism's output shaft, design mounting structure is simple, the dependable performance, and economic cost is low, is suitable for quick earthing switch spring operating mechanism's operational requirement.

The utility model provides a technical scheme that its technical problem adopted does:

the mechanical limiting device of the electric spring mechanism comprises a base, a driving mechanism and a limiting mechanism; the driving mechanism comprises a driving wheel, a telescopic mechanism and an output shaft, and the driving wheel is connected with the telescopic mechanism; the output shaft is arranged on the base and connected with the telescopic mechanism; the limiting mechanism comprises a limiting part and a telescopic blocking part, the limiting part is fixed on the output shaft, the telescopic blocking part is fixed on the base and can block the telescopic blocking piece, one side of the driving wheel, which is close to the telescopic blocking part, is provided with two protruding parts in the vertical direction, and the protruding parts can compress the telescopic blocking piece.

Furthermore, the telescopic mechanism comprises a driven shaft pin, a spring assembly and a driven crank arm, the driven shaft pin is connected with the driving wheel and the spring assembly, and the driven shaft pin is also connected with the output shaft through a hinged crank arm; the driven crank arm is connected with the output shaft and is pushed to rotate through a driven shaft pin.

Furthermore, the limiting component is a flange sheet, and the flange sheet is in a shape of an oblong sheet.

Furthermore, the telescopic blocking piece is a spring pin.

Further, the protruding piece is a taper pin.

Further, still include the motor, the output shaft of motor is connected with the worm, the drive wheel is with the worm wheel of worm meshing.

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

1. the mechanical limiting device of the electric spring mechanism of the example of the utility model meets the requirements of the opening and closing positions and the stroke of the quick grounding switch of the GIS equipment, realizes the design requirement of the output angle of the operator, overcomes the difficulty of the displacement of the output shaft when the operator stores energy, and ensures the accuracy and the reliability of the electric spring operating mechanism of the quick grounding switch;

2. the utility model discloses the mechanical stop device of electric spring mechanism of example utilizes the spring catch to block the flange piece, at spring unit energy storage in-process, avoids the rotation of output shaft, plays limiting displacement to the output shaft, and when spring unit release energy, the taper round pin on the drive wheel compresses the spring catch, and the flange piece does not receive and blocks, and the driven shaft round pin alright promotes the rotation of driven turning arm to realize the rotation of output shaft.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the limiting mechanism.

In the figure: the device comprises a base 1, a worm wheel 2, an output shaft 3, a driven shaft pin 4, a spring assembly 5, a driven crank arm 6, a flange plate 7, a spring pin 8, a taper pin 9, a motor 10 and a fixing piece 11.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-2, the present embodiment provides a mechanical limiting device of an electric spring mechanism, including a base 1, a driving mechanism and a limiting mechanism, where the driving mechanism can drive rotation of an output shaft 3, so as to complete switching on and off operations, and the limiting mechanism limits the output shaft 3, and it is ensured that the output shaft 3 does not shift when the spring mechanism stores energy, so as to avoid the output angle of the output shaft 3 from becoming small, which leads to insufficient switching on and off of contacts of a grounding switch body, and insufficient insulation distance, thereby causing potential accidents such as burning out of contacts.

The driving mechanism comprises a motor 10, a worm, a driving wheel, a telescopic mechanism and an output shaft 3. Specifically, the motor 10 is installed on the base 1, an output shaft of the motor 10 is connected with a worm, the driving wheel is a worm wheel 2 meshed with the worm, and the motor 10 drives the worm wheel 2 to rotate through the worm. The telescopic mechanism comprises a driven shaft pin 4, a spring assembly 5 and a driven crank arm 6, the driven shaft pin is connected with the driving wheel and the spring assembly 5, and the driven shaft pin 4 is also connected with the output shaft 3 through a hinged crank arm; the driven crank arm 6 is connected with the output shaft 3 and is pushed to rotate through the driven shaft pin 4. When the device is installed, the output shaft 3 is fixed on the base 1, the worm wheel 2 is arranged on the edge (wall plate (shell)) of the output shaft 3 close to the base 1, and the spring assembly 5 is arranged in the middle of the output shaft 3.

When the mechanism is located at a brake separating position, a brake closing button is pressed, the motor 10 is electrified to drive the worm to rotate, the worm drives the worm wheel 2 to rotate clockwise, the worm wheel 2 drives the driven shaft pin 4 to rotate clockwise and compress the spring assembly 5, when the energy storage spring is in the middle, the spring assembly 5 releases energy instantly, and the driven shaft pin 4 pushes the driven crank arm 6 to drive the output shaft 3 to rotate clockwise to complete brake closing.

In addition, when the mechanism is opened and closed, the rotating directions of the motor are opposite, so that the rotating directions of the worm and the worm wheel are also opposite, namely the principle is the same when the mechanism is opened and closed.

As shown in fig. 2, the limiting mechanism includes a limiting part and a retractable blocking member, the limiting part is fixed on the output shaft 3, the retractable blocking member is fixed on the base 1 and can block the retractable blocking member, one side of the driving wheel close to the retractable blocking member is provided with two protruding members in the up-down direction, and the protruding members can compress the retractable blocking member. In this embodiment, the limiting component is an oblong sheet-shaped shaft sleeve flange sheet 7, the telescopic blocking sheet is a spring pin 8, the protruding piece is a taper pin 9, and the taper of the taper pin 9 is convenient for compressing the spring pin 8.

Specifically, the flange plate 7 is fixed on the output shaft 3 close to the wallboard or the shell through a concave key groove and rotates along with the output shaft 3; the spring pin 8 is arranged on a wall plate or a shell, the compressed movable side of the spring pin and the taper pin 9 on the worm wheel 2 have coincident collision positions when rotating, and a mechanical limit swinging flange sheet 7 is arranged between the two parts.

In the 5 energy storage processes of spring assembly, the rotatory screw rod worm wheel 2 that drives of motor 10 rotates, and 2 convex tapering round pins 9 of installation on the worm wheel 2 rotate along with worm wheel 2 during the energy storage, and tapering round pin 9 also follows the rotation. The mechanical limit swing flange sheet 7 is a long elliptic sheet-shaped shaft sleeve flange and is fixed on the output shaft 3, the mechanical limit swing flange sheet is embedded on the shaft through a concave key groove and rotates along with the output shaft 3, and the top of the flange sheet 7 is clamped at the spring pin 8 in the rotating process to limit the rotation of the output shaft 3 during energy storage. A round hole with the diameter of 20 is arranged at the position of the side wall plate (shell) on the output shaft 3, the spring pin 8 is fixed on the wall plate through a fixing piece 11, and the spring pin 8 is inserted onto the fixing piece 11 from the wall plate to enable the spring pin to move linearly in the front-back direction.

When the spring assembly 5 stores energy, the motor 10 rotates to drive the screw worm wheel 2 to rotate, the spring pin 8 on the opposite side is in a free state (with a compressible bump), and the flange sheet 7 is blocked by the spring pin 8 extending out of the bump, so that the output shaft 3 cannot move and cannot rotate along with the rotation of the worm wheel 2.

When the worm wheel 2 rotates to align the taper pin 9 and the spring pin 8 of the worm wheel 2, namely when the center line of the compression spring just passes through the dead point position of the crank arm (when the taper pin 9 is hinged with the crank arm and three points of the spring assembly 5 form a line), the taper pin 9 on the worm wheel 2 pushes the spring pin 8 to enable the spring pin 8 to move backwards under the action of the tension spring, the flange sheet 7 of the mechanical limit swing shaft moves backwards, the spring assembly 5 releases the stored energy instantly, the operator output shaft 3 can rotate freely without being limited by the flange sheet 7 at the moment, and therefore the body contact is pushed to rotate at a high speed. The angle of the flange plate 7 and the angle output by the output shaft 3 are matched for use.

The stroke and the opening and closing positions of the quick grounding switch body are required to be adjusted during initial assembly to reach design requirement management values, then the actual output shaft angle is tested, the angle is deviated from the design angle, the angle of the mechanical limit swing flange plate is determined again according to the actual output shaft angle, the flange plate with a new angle is used, and batch production can be realized by the operating mechanism.

After the electric spring operating mechanism of the quick grounding switch is additionally provided with the mechanical limiting device, 5000 times of on-off action verification is carried out. When the manipulator moves 1000 times, the manipulator is subjected to mechanical characteristic verification, test data meet requirements, and the output shaft does not rotate firstly when energy is stored.

The GIS quick earthing switch body does not have the condition that the quick earthing switch body cannot be separated or combined when acting, and the device ensures the accuracy and the reliability of the electric spring operating mechanism of the quick earthing switch.

It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (6)

1. A mechanical limiting device of an electric spring mechanism is characterized by comprising a base, a driving mechanism and a limiting mechanism;

the driving mechanism comprises a driving wheel, a telescopic mechanism and an output shaft, and the driving wheel is connected with the telescopic mechanism; the output shaft is arranged on the base and connected with the telescopic mechanism;

the limiting mechanism comprises a limiting part and a telescopic blocking part, the limiting part is fixed on the output shaft, the telescopic blocking part is fixed on the base and can block the telescopic blocking piece, one side of the driving wheel, which is close to the telescopic blocking part, is provided with two protruding parts in the vertical direction, and the protruding parts can compress the telescopic blocking piece.

2. The mechanical limit device of an electric spring mechanism according to claim 1, wherein the telescopic mechanism comprises a driven pin shaft, a spring assembly and a driven crank arm, the driven pin shaft is connected with the driving wheel and the spring assembly, and the driven pin shaft is further connected with the output shaft through an articulated crank arm; the driven crank arm is connected with the output shaft and is pushed to rotate through a driven shaft pin.

3. The mechanical limit device of an electric spring mechanism according to claim 1, wherein the limit member is a flange plate, and the flange plate is an oblong plate.

4. The mechanical stop device of an electric spring mechanism according to claim 1, wherein the retractable stopping piece is a spring pin.

5. The mechanical stop device of an electric spring mechanism according to claim 1, wherein said protruding member is a tapered pin.

6. The mechanical limit device of an electric spring mechanism according to claim 1, further comprising a motor, wherein an output shaft of the motor is connected with a worm, and the driving wheel is a worm wheel engaged with the worm.

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