Electric / manual operating mechanism for high-voltage switchgear

Abstract

The invention relates to the field of power system application equipment, and discloses an electric / manual operation mechanism for high-voltage switch equipment. An electric / manual operating mechanism for high-voltage switchgear is mainly composed of a motor, a motor output shaft, a motor output gear, a clutch, a fourth-stage gear, an electromagnet, a travel switch, a limiting block, a mechanism operating shaft, a second-stage gear, a clutch mandrel, a clutch block, a pressure spring, a shaft sleeve, a flat key, a third-stage gear, a terminal strip, a mounting plate, a hexagon socket screw, a spacer bush and a nut. The motor rotates forwards and reversely to drive all stages of gears for transmission, meanwhile, the clutch, the electromagnet and other assemblies are controlled to achieve switch-on and switch-off of the switch, and electric-to-manual operation can also be achieved. The stability and reliability of the mechanism are improved.

Description

Technical Field

[0001] The invention relates to the field of power system application equipment, in particular to an electric / manual operating mechanism for high-voltage switch equipment. Background Art

[0002] 10kV and 35kV high-voltage switchgear is a switchgear widely used in power supply systems. Isolating switches and grounding switches are installed in high-voltage switchgear. Isolating switches are switch components used to isolate power supplies and connect and disconnect low-current circuits; grounding switches are a common mechanical grounding device to ensure the personal safety of maintenance personnel during power outages.

[0003] In traditional operating mechanisms, when disconnectors and earthing switches are opened and closed, the clutch shaft of the operating mechanism is mostly set as a round shaft. Not only is the transmission torque small, but when the clutch is working, the shaft and the sleeve will produce relative motion when they rotate, and the clutch will roll, thereby wearing the shaft. After wear, the gap between the shaft and the sleeve becomes larger, resulting in incomplete clutch engagement, clutch delay, clutch asynchronism and other problems, causing operating mechanism system failure accidents, affecting the safety of switchgear, and seriously affecting the reliable operation of the power system.

[0004] Therefore, based on the above problems, the present invention provides an electric / manual operating mechanism for opening and closing the isolating switch and the earthing switch in the high-voltage switchgear. Summary of the invention

[0005] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides an electric / manual operating mechanism for high-voltage switches. It is used for 10kV and 35kV indoor disconnectors and grounding switches. The motor drives the gear transmission at all levels through forward and reverse rotation, and controls the clutch, electromagnet and other components to realize the opening and closing of the switch, and can also realize electric to manual operation. The invention improves the stability and reliability of the mechanism.

[0006] The present invention is implemented by the following technical solutions: An electric / manual operating mechanism for high-voltage switchgear, comprising a motor, a motor output shaft, a motor output gear, a clutch, a four-stage gear, an electromagnet, a travel switch, a limit block, a mechanism operating shaft, a two-stage gear, a clutch spindle, a clutch block, a compression spring, a sleeve, a flat key, a three-stage gear, a terminal strip, a mounting plate, a hexagon socket bolt, a spacer, and a nut; The motor is connected to the motor output shaft and the motor output gear, and the motor output gear is driven to rotate by forward and reverse rotation. The motor output gear is meshed with the secondary gear of the clutch to reduce speed. At the same time, after the electromagnet is energized, the valve core is extended and retracted to push the clutch core shaft and the clutch block, driving the third-stage gear to rotate, the third-stage gear is meshed with the fourth-stage gear, and the operating shaft of the driving mechanism rotates to realize the opening and closing operation of the switch; The other end of the mechanism operating shaft is connected to a manual operating connector, and a handle can be placed into the manual operating connector to perform manual opening and closing operations; Preferably, the clutch comprises: a secondary gear, whose inner hole surface is provided with two rectangular key grooves, which is fixed to the shaft sleeve through a flat key connection and meshes with the output gear of the motor; a third-stage gear, which is installed on the shaft sleeve, and whose inner hole surface is provided with four evenly distributed arc grooves, and the third-stage gear is meshed with the fourth-stage gear for transmission; the shaft sleeve is set as a stepped shaft, wherein two waist holes are set on the larger step surface, which are used in conjunction with the secondary gear and the flat key; eight square holes are set on the smaller step surface, which are used in conjunction with the clutch block; the inner hole of the shaft sleeve is set as a square flat-bottom hole, which is used in conjunction with the clutch core shaft; the clutch core shaft is set as a square rod, and eight slopes are set on the surface of the square rod, which are used in conjunction with the slope of the clutch block, and a circular flat-bottom hole is set inside the square rod, and a compression spring is set in the hole; the clutch block is set as a block, one side of which is set as a slope, which is used in conjunction with the slope of the clutch core shaft, and one side of which is set as a semi-cylindrical surface, which is used in conjunction with the arc grooves on the inner surface of the shaft sleeve and the third-stage gear.

[0007] Preferably, the eight sloped surfaces of the clutch core shaft fit with the sloped surfaces of the clutch block. When the clutch core shaft moves axially, it pushes the clutch block to move radially. The radial force generated by its eight inclined surfaces pushes the clutch block outward. The semi-cylindrical surfaces of the eight clutch blocks are embedded in the four arc-shaped grooves of the three-stage gear, fitting therewith to generate shear force, thereby driving the three-stage gear to rotate.

[0008] Preferably, a rectangular spline is arranged on the motor output shaft, a rectangular spline groove is arranged in the inner hole of the motor output gear, and a spline connection is adopted between the motor output shaft and the motor output gear.

[0009] Preferably, two limit blocks are installed on the operating shaft of the mechanism, one for opening limit and the other for closing limit, the limit blocks are used in conjunction with the travel switch, the travel switch is provided with a wire connected to the terminal strip, and the terminal strip is provided with a wire connected to the intelligent control system.

[0010] Preferably, the electromagnet is installed on a mounting plate, and the electromagnet valve core is in contact with the end face of the clutch core shaft. When the electromagnet is energized, the electromagnetic force drives the valve core to extend, pushes the clutch core shaft to move axially and compresses the compression spring; when the electromagnet is not energized, the compression spring releases pressure and rebounds, causing the clutch core shaft to move axially and pushes the electromagnet valve core back to its original position.

[0011] Compared with the prior art, the technical effects of the electric / manual operating mechanism for a high-voltage switch of the present invention are: reasonable design structure, stable opening and closing operation, and the ability to realize electric to manual operation, solving the operational failure problems of the prior operating mechanism caused by incomplete clutch engagement, clutch delay, and clutch asynchronism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a structural diagram of the operating mechanism of the present invention; Figure 2 It is a schematic diagram of the operating mechanism structure of the present invention; Figure 3 It is a cross-sectional view of the clutch of the present invention; Figure 4 It is a structural diagram of the clutch of the present invention; Figure 5 It is a comparative schematic diagram of the working and non-working states of the electromagnet of the present invention; Figure 6 It is the gear train diagram of the transmission system of the present invention; Figure 7 This is a manual schematic diagram of the operating mechanism of the present invention; Figure 8 It is a schematic diagram for comparing the positions of the limit blocks of the travel switch of the present invention.

[0013] Figure markings: 1-motor, 2-motor output shaft, 3-motor output gear, 4-clutch, 5-fourth-stage gear, 6-electromagnet, 7-travel switch, 8-limit block, 9-mechanism operating shaft, 10-secondary gear, 11-clutch core shaft, 12-clutch block, 13-compression spring, 14-sleeve, 15-flat key, 16, third-stage gear, 17-terminal strip, 18-mounting plate, 19-hexagon socket bolt, 20-spacer, 21-nut. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the common meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "secondary", "tertiary", "quaternary" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0016] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0017] The invention discloses an electric / manual operating mechanism for high-voltage switch equipment, which is used for opening and closing control of isolating switches and grounding switches in high-voltage switch cabinets.

[0018] The operating mechanism is installed in an indoor high-voltage switch cabinet, and consists of a motor 1, a motor output shaft 2, a motor output gear 3, a clutch 4, a four-stage gear 5, an electromagnet 6, a travel switch 7, a limit block 8, a mechanism operating shaft 9, a two-stage gear 10, a clutch spindle 11, a clutch block 12, a compression spring 13, a sleeve 14, a flat key 15, a three-stage gear 16, a terminal strip 17, a mounting plate 18, a hexagon socket bolt 19, a spacer 20, and a nut 21.

[0019] like Figure 1 , Figure 2 As shown, the motor 1 is mounted on the mounting plate 18 , the motor 1 is connected to the motor output shaft 2 , and the output end of the motor output shaft 2 is connected to the motor output gear 3 by using a rectangular spline.

[0020] Both ends of the clutch 4 are placed on the mounting plate 18 , and one end thereof is connected to the electromagnet 6 .

[0021] The secondary gear 10 of the clutch 4 is meshed with the motor output gear.

[0022] The third-stage gear 16 of the clutch 4 is meshed with the fourth-stage gear 5 .

[0023] The mechanism operating shaft 9 passes through the mounting plate 18 and the four-stage gear 5 in sequence, and the mounting plate 18 is placed in the high-voltage switch cabinet.

[0024] like Figure 1 As shown, after the two limit blocks 8 are inserted into the mechanism operating shaft 9, the opening and closing positions are adjusted to fit with the roller of the travel switch 7.

[0025] One end of the mechanism operating shaft 9 is connected to the isolating switch and the earthing switch, and the other end is connected to the mobile phone operating connector. When the power is interrupted, the opening and closing operations can be performed through the handle.

[0026] like Figure 1 , Figure 2 As shown, the hexagon socket bolt 19 is passed through the mounting plate 18, the spacer 20, and the mounting plate 18 in sequence, and then screwed into the nut 21 to tighten.

[0027] The terminal strip 17 is mounted on the upper end of the mounting plate 18. Wires are arranged on the electromagnet 6, the motor 1 and the travel switch 7. After the wires are connected through the terminal strip 17, the electrical signals are transmitted to the intelligent control system, so that the opening and closing operations of the electric control switch can be realized.

[0028] like Figure 7As shown, in the above structure, when the power is off, the handle can be placed in the manual operation connector, and the handle can be rotated to drive the mechanism operating shaft 9 to rotate to switch the opening and closing states.

[0029] like Figure 3 , Figure 4 As shown, the clutch 4 is composed of a secondary gear 10, a clutch mandrel 11, a clutch block 12, a compression spring 13, a shaft sleeve 14, a flat key 15, and a tertiary gear 16. The secondary gear 10 and the shaft sleeve 14 are connected by a flat key 15; the clutch mandrel 14 is configured as a square rod, a circular flat bottom hole is provided inside the square rod, and the compression spring 13 is placed in the flat bottom hole. The surface of the square rod is provided with eight slopes, which cooperate with the slopes provided on the clutch block 12.

[0030] When the electromagnet 6 is working, the electromagnetic force generated controls the valve core of the electromagnet to extend and press against the end face of the clutch core shaft 11. The clutch core shaft 11 compresses the compression spring 13 and pushes the clutch core shaft 11 forward. The forward axial force of the clutch core shaft 11 is converted into radial force. The radial force generated by its eight inclined surfaces pushes the clutch block 12 outward. The arc surfaces of the eight clutch blocks 12 are embedded in the four grooves of the three-stage gear 16 and fit therewith, driving the three-stage gear 16 to rotate and realize the clutch closing.

[0031] When the electromagnet 6 is not working, the electromagnetic force disappears, the compression spring 13 releases the pressure and springs open, pushing the clutch core shaft 11 to move backward, pushing the valve core of the electromagnet back to the original position of the electromagnet, and the clutch block 12 falls inward to its original position, separating from the four grooves of the three-stage gear 16, and the three-stage gear 16 stops rotating, realizing clutch separation.

[0032] like Figure 6 As shown, the working principle of an electric / manual operating mechanism for high-voltage switchgear is that when the mechanism needs to be closed, the motor 1 rotates forward, driving the motor output shaft 2 and the motor output gear 3 to rotate, and the motor output gear 3 is meshed with the secondary gear of the clutch 4. At the same time, the electromagnet is energized to work, pushing the clutch to close, driving the third-stage gear 16 to rotate, and the third-stage gear 16 is meshed with the fourth-stage gear 5, driving the fourth-stage gear 5 to rotate, and the fourth-stage gear 5 is connected to the mechanism operating shaft 9 through a flat key, thereby driving the mechanism operating shaft 9 to rotate forward, and one end of the mechanism operating shaft 9 is connected to the isolating switch and the grounding switch to realize the closing operation. The wires of the travel switch 7 are connected to the terminal strip 17, and the wires of the terminal strip 17 are connected to the intelligent operating system. After the switch is closed, Figure 8 As shown, the limit block 8 installed on the mechanism operating shaft 9 is in the closing position, which triggers the travel switch 7 and releases an electrical signal to the intelligent control system, instructing the electromagnet 6 to stop working, the electromagnet valve core retracts, and the clutch 4 is in a disengaged state, preparing for the next opening operation.

[0033] When the mechanism needs to be opened, the motor 1 rotates in the reverse direction, driving the motor output shaft 2 and the motor output gear 3 to rotate. The motor output gear 3 meshes with the secondary gear of the clutch 4. At the same time, the electromagnet is energized to work, pushing the clutch to close, driving the third-stage gear 16 to rotate, and the third-stage gear 16 meshes with the fourth-stage gear 5 to drive the fourth-stage gear 5 to rotate. The fourth-stage gear 5 is connected to the mechanism operating shaft 9 through a flat key, thereby driving the mechanism operating shaft 9 to rotate in the reverse direction. One end of the mechanism operating shaft 9 is connected to the disconnector and the grounding switch to realize the opening operation. After the opening is in place, Figure 8 As shown, the limit block 8 installed on the mechanism operating shaft 9 is in the open position, and the wire of the trip switch 7 is triggered to release an electrical signal to the intelligent control system, instructing the electromagnet 6 to stop working, the electromagnet valve core retracts, and the clutch 4 is in a disengaged state, preparing for the next closing operation.

[0034] The other end of the mechanism operating shaft 9 is connected to the manual operating connector. When the power is off, a handle is inserted into the manual operating connector to perform manual opening and closing operations.

[0035] It should be understood that the specific embodiments described above are only used to explain the present invention and are only used to cooperate with the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention without affecting the effects and purposes that can be achieved by the present invention.

Claims

1. An electric / manual operating mechanism for high voltage switchgear, Features: The invention comprises a motor (1), a motor output shaft (2), a motor output gear (3), a clutch (4), a four-stage gear (5), an electromagnet (6), a travel switch (7), a limit block (8), a mechanism operating shaft (9), a two-stage gear (10), a clutch core shaft (11), a clutch block (12), a compression spring (13), a sleeve (14), a flat key (15), a three-stage gear (16), a terminal strip (17), a mounting plate (18), a hexagon socket bolt (19), a spacer (20) and a nut (21); the motor (1) is connected to the motor output shaft (2), the motor output The gears (3) are connected to each other, and the motor output gear (3) is driven to rotate by forward and reverse rotation. The motor output gear (3) is meshed with the secondary gear (10) of the clutch (4) to reduce speed. At the same time, after the electromagnet is energized, the valve core is extended and retracted to push the clutch core shaft (11) and the clutch block (12), thereby driving the third-stage gear (16) to rotate. The third-stage gear (16) is meshed with the fourth-stage gear (5), and the driving mechanism operating shaft (9) is rotated to realize the switch opening and closing operation. The other end of the mechanism operating shaft (9) is connected to a manual operation connector, and a handle can be placed in the manual operation connector to perform manual opening and closing operations.

2. An electric / mobile phone operating mechanism for high voltage switchgear according to claim 1, It is characterized in that The clutch (4) comprises: Secondary gear (10): two rectangular keyways are arranged on the inner hole surface, connected and fixed to the shaft sleeve (14) via a flat key (15), and meshing with the motor output gear (3); The third-stage gear (16) is mounted on the shaft sleeve (14), and has four evenly distributed arc grooves on its inner hole surface. The third-stage gear (16) is meshed with the fourth-stage gear (5) for transmission; The shaft sleeve (14) is configured as a stepped shaft, wherein two waist holes are arranged on the larger stepped surface, and are used in conjunction with the secondary gear (10) and the flat key (15); eight square holes are arranged on the smaller stepped surface, and are used in conjunction with the clutch block (12); the inner hole of the shaft sleeve (14) is configured as a square flat-bottom hole, and is used in conjunction with the clutch core shaft (11); The clutch core shaft (11) is set as a square rod, and eight slopes are set on the surface of the square rod to cooperate with the slope of the clutch block (12). A circular flat-bottom hole is set inside the square rod, and a compression spring (13) is set in the hole; The clutch block (12) is configured as a block, one side of which is configured as a sloped surface, which cooperates with the sloped surface of the clutch core shaft (11), and one side of which is configured as a semi-cylindrical surface, which cooperates with the arc groove on the inner surface of the third-stage gear (16).

3. The electric / mobile phone operating mechanism for high voltage switchgear according to claim 2, It is characterized in that The eight sloped surfaces of the clutch core shaft (11) fit with the sloped surface of the clutch block (12). When the clutch core shaft (11) moves axially, it pushes the clutch block (12) to move radially. The radial force generated by the eight inclined surfaces pushes the clutch block (12) outward. The eight semi-cylindrical surfaces of the clutch block (12) are embedded in the four arc-shaped grooves of the third-stage gear (16), fit therewith to generate shear force, and drive the third-stage gear (16) to rotate.

4. The electric / mobile phone operating mechanism for high voltage switchgear according to claim 1, It is characterized in that The motor output shaft (2) is provided with a rectangular spline, the inner hole of the motor output gear (3) is provided with a rectangular spline groove, and the motor output shaft (2) and the motor output gear (3) are spline-connected.

5. The electric / mobile phone operating mechanism for high voltage switchgear according to claim 1, It is characterized in that Two limit blocks (8) are installed on the mechanism operating shaft (9), one for opening limit and the other for closing limit. The limit blocks (8) are used in conjunction with the travel switch (7). The travel switch (7) is provided with a wire connected to the terminal strip (17), and the terminal strip (17) is provided with a wire connected to the intelligent control system.

6. The electric / mobile phone operating mechanism for high voltage switchgear according to claim 1, Features: The electromagnet (6) is mounted on the mounting plate (18), and the electromagnet valve core is in contact with the end surface of the clutch core shaft (11). When the electromagnet (6) is energized, the electromagnetic force drives the valve core to extend, pushes the clutch core shaft (11) to move axially and compresses the compression spring (13). When the electromagnet (6) is not energized, the compression spring (13) releases pressure and rebounds, so that the clutch core shaft (11) moves axially and pushes the electromagnet valve core back to its original position.

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