Operating mechanism of rotary disconnecting switch

Abstract

The utility model discloses an operating mechanism of a rotary disconnecting switch. The operating mechanism is installed on a rotary disconnecting switch body and used for driving a moving contact assembly on the rotary disconnecting switch body to rotate. Comprising an upper cover, an operating rod, a drive plate, a reset piece, a linkage plate and a locking assembly, the upper cover is fixed on a rotary disconnecting switch body, the operating rod penetrates through the upper cover and is in linkage connection with the drive plate arranged in the upper cover, the linkage plate is arranged in the upper cover and is in circumferential linkage connection with the moving contact assembly, the drive plate and the linkage plate are coaxially arranged, and the reset piece is arranged on the upper cover. The two ends of the reset piece act on the drive plate and the linkage plate respectively, the locking assembly is matched with the drive plate, and when the drive plate rotates, the locking assembly has a locking state for locking the linkage plate and the upper cover and an unlocking state for unlocking the linkage plate and the upper cover. According to the utility model, connection and disconnection of the rotary disconnecting switch can be realized, misoperation can be prevented, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an operating mechanism of a rotary isolating switch. Background Art

[0002] When the isolating switch is in the open position, there is an insulation distance between the contacts that meets the specified requirements and an obvious disconnection mark; when in the closed position, it is a switch device that can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time. The isolating switch is used for high voltage or low voltage. Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a great impact on the design, establishment and safe operation of substations and power plants. The isolating switch is mainly used to reliably isolate the part of the high-voltage distribution device that needs to be shut down from the live part to ensure the safety of maintenance work.

[0003] At present, the rotary isolating switch in the prior art is usually directly controlled by a knob to switch the state of the rotary isolating switch. It is easy to cause the rotary isolating switch to be closed or opened due to misoperation of the knob, resulting in serious safety accidents. Utility Model Content

[0004] The purpose of the utility model is to provide an operating mechanism of a rotary isolating switch. The utility model can realize the connection and disconnection of the rotary isolating switch, and can prevent the occurrence of misoperation, thereby improving safety.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an operating mechanism of a rotary isolating switch, which is installed on the main body of the rotary isolating switch and is used to drive the moving contact assembly on the main body of the rotary isolating switch to rotate; it includes an upper cover, an operating rod, a dial, a reset member, a linkage disk and a locking assembly, the upper cover is fixed on the main body of the rotary isolating switch, the operating rod passes through the upper cover and is linked to the dial arranged in the upper cover, the linkage disk is arranged in the upper cover and is circumferentially linked to the moving contact assembly, the dial is coaxially arranged with the linkage disk, the two ends of the reset member act on the dial and the linkage disk respectively, the locking assembly cooperates with the dial, and when the dial rotates, the locking assembly has a locking state in which the linkage disk is locked with the upper cover and an unlocking state in which the linkage disk is released from the lock of the upper cover.

[0006] By adopting the above technical solution, in the initial state, the locking assembly locks the linkage disk and the upper cover, so that the linkage disk cannot rotate, the operating rod drives the dial to rotate a certain angle, and the reset member compresses the stored energy until the dial drives the locking assembly to release the lock of the linkage disk and the upper cover. At this time, the reset member releases the energy, and the linkage disk drives the moving contact assembly to rotate under the action of the reset member, thereby realizing the connection and disconnection of the isolating switch. It needs to rotate a certain angle to release the lock of the linkage disk and the upper cover, and the connection and disconnection of the isolating switch will not be realized immediately, which can prevent the occurrence of misoperation and has higher safety.

[0007] The utility model is further configured as follows: the locking assembly includes a locking rod and a spring, a guide hole is provided on the rotary isolating switch body, the locking rod and the spring are arranged in the guide hole, and the spring applies an axial spring force to the locking rod, a first locking hole and a second locking hole are provided on the upper cover, and the upper end of the locking rod is inserted into the first locking hole or the second locking hole under the action of the spring to achieve locking of the linkage disk and the upper cover, and an unlocking boss is provided on the dial for pressing the locking rod down and disengaging it from the first locking hole or the second locking hole when rotating.

[0008] By adopting the above technical solution, the upper end of the locking rod is pushed into the corresponding locking hole of the upper cover by the spring, so that the linkage disk and the upper cover are locked. The operating dial overcomes the spring force to press the locking rod down and disengage it from the corresponding locking hole, so that the linkage disk and the upper cover can be unlocked. The locking component structure is simple and reliable, and the assembly efficiency is fast.

[0009] The utility model is further configured that the linkage disk is provided with a guide groove extending vertically and connected to the guide hole, and the side of the lock rod is provided with a guide rod extending out of the guide groove and cooperating with the unlocking boss.

[0010] By adopting the above technical solution, a guide rod is arranged on the lock rod to cooperate with the unlocking boss on the dial, so that the effect of converting the rotational motion into the vertical motion can be achieved.

[0011] The utility model is further configured that the unlocking boss extends along the circumference of the dial, and the unlocking boss comprises an operating protrusion located in the middle and guiding inclined surfaces arranged at both ends of the operating protrusion.

[0012] By adopting the above technical solution, when the unlocking boss cooperates with the guide rod on the lock rod, the guide rod can be gradually pressed down through the guide inclined portion until the guide rod rests on the lower end of the operating boss, so that the upper end of the lock rod is completely separated from the corresponding lock hole, making the operation easier and more comfortable.

[0013] The utility model is further configured that a shaft sleeve is provided on the linkage disk, and a columnar protrusion matched with the shaft sleeve is provided on the dial.

[0014] By adopting the above technical solution, the coaxial rotation cooperation between the two can be achieved.

[0015] The utility model is further configured such that the reset member is a torsion spring, the dial is provided with a toggle protrusion, the linkage disk is provided with a support protrusion, the reset member is sleeved on the outer periphery of the shaft sleeve, and the two ends of the reset member are respectively pressed against the toggle protrusion and the side of the support protrusion.

[0016] By adopting the above technical solution and arranging a torsion spring, energy can be stored when the dial and the linkage disk rotate relative to each other, and the energy can be released to drive the linkage disk to rotate when the linkage disk and the upper cover are unlocked.

[0017] The utility model is further configured that a follow-up protrusion is provided at the upper end of the dial, and two limit protrusions are provided on the inner side of the upper cover for limiting the travel of the follow-up protrusion when the dial rotates.

[0018] By adopting the above technical solution, the circumferential travel of the dial can be limited, and its dialing angle can be restricted, so that the opening and closing operations are more precise and the structure is more reliable.

[0019] The utility model is further configured such that an arc-shaped limit hole is provided on the linkage disk, and a limit protrusion matching the arc-shaped limit hole is provided on the rotary isolating switch body. When the linkage disk rotates and the limit protrusion abuts against one end of the arc-shaped limit hole, the limit protrusion constitutes a circumferential limit for the linkage disk.

[0020] By adopting the above technical solution, the circumferential travel of the linkage disk can be limited, and the angle at which it drives the moving contact assembly to rotate can be restricted, thereby achieving precise opening and closing of the switch.

[0021] The utility model is further configured that the inner end of the operating rod is provided with a linkage convex portion with a non-circular cross section, and the dial is provided with a linkage groove matched with the linkage convex portion.

[0022] By adopting the above technical solution, the circumferential linkage between the operating lever and the dial can be achieved.

[0023] The utility model is further configured that a knob is fixedly mounted on the outer end of the operating rod.

[0024] By adopting the above technical solution, the operating rod is rotated by the operating knob, so that the connection or disconnection operation of the rotary disconnector can be more conveniently performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure in which the operating mechanism of the utility model is arranged on a rotary isolating switch;

[0026] Figure 2 It is a structural schematic diagram of the operating mechanism of the utility model when it is in a locked state;

[0027] Figure 3It is a structural schematic diagram of the operating mechanism of the utility model when it is in unlocked state;

[0028] Figure 4 It is a structural schematic diagram of the upper cover of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the dial of the utility model;

[0030] Figure 6 It is a schematic diagram of the installation structure of the linkage disk of the utility model.

[0031] In the figure: 1. Rotary isolating switch body; 2. Moving contact assembly; 3. Upper cover; 4. Operating lever; 5. Dial; 6. Reset member; 7. Linkage disk; 8. Locking assembly; 9. Locking rod; 10. Spring; 11. Guide hole; 12. First lock hole; 13. Second lock hole; 14. Unlocking boss; 15. Guide groove; 16. Guide rod; 17. Actuating protrusion; 18. Guide inclined portion; 19. Bushing; 20. Columnar protrusion; 21. Toggle protrusion; 22. Support protrusion; 23. Follow-up protrusion; 24. Limiting protrusion; 25. Arc-shaped limiting hole; 26. Limiting convex block; 27. Linkage convex portion; 28. Linkage groove; 29. ​​Knob. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example: As attached Figures 1 to 6The operating mechanism of a rotary isolating switch shown in the figure is installed on the rotary isolating switch body 1 and is used to drive the moving contact assembly 2 on the rotary isolating switch body 1 to rotate; it includes an upper cover 3, an operating rod 4, a dial 5, a reset member 6, a linkage disk 7 and a locking assembly 8, the upper cover 3 is fixed on the rotary isolating switch body 1, the operating rod 4 passes through the upper cover 3 and is linked to the dial 5 arranged in the upper cover 3, the linkage disk 7 is arranged in the upper cover 3 and is circumferentially linked to the moving contact assembly 2, the linkage disk 7 and the moving contact assembly 2 can adopt a non-circular concave-convex matching structure to achieve linkage, the dial 5 and the linkage disk 7 are coaxially arranged, the two ends of the reset member 6 act on the dial 5 and the linkage disk 7 respectively, the locking assembly 8 cooperates with the dial 5, and when the dial 5 rotates, the locking assembly 8 has a locking state in which the linkage disk 7 is locked with the upper cover 3 and an unlocking state in which the linkage disk 7 is released from the upper cover 3. In the initial state, the locking assembly 8 locks the linkage disk 7 and the upper cover 3, so that the linkage disk 7 cannot rotate. The operating rod 4 drives the dial 5 to rotate a certain angle, and the reset member 6 compresses the stored energy until the dial 5 drives the locking assembly 8 to release the lock of the linkage disk 7 and the upper cover 3. At this time, the reset member 6 releases the energy, and the linkage disk 7 drives the moving contact assembly 2 to rotate under the action of the reset member 6, thereby realizing the connection and disconnection of the isolating switch. It needs to rotate a certain angle to release the lock of the linkage disk 7 and the upper cover 3, and the connection and disconnection of the isolating switch will not be realized immediately, which can prevent the occurrence of misoperation and has higher safety.

[0034] As attached Figures 2 to 4 As shown, the locking assembly 8 includes a locking rod 9 and a spring 10. A guide hole 11 is provided on the rotary isolating switch body 1. The locking rod 9 and the spring 10 are arranged in the guide hole 11, and the spring 10 applies an axial spring force to the locking rod 9. The upper cover 3 is provided with a first locking hole 12 and a second locking hole 13. Under the action of the spring 10, the upper end of the locking rod 9 is inserted into the first locking hole 12 or the second locking hole 13 to achieve the locking of the linkage disk 7 and the upper cover 3. The dial 5 is provided with an unlocking boss 14 for pressing the locking rod 9 downward and disengaging from the first locking hole 12 or the second locking hole 13 when rotating. The upper end of the locking rod 9 is pushed into the corresponding locking hole of the upper cover 3 by the spring 10 to achieve the locking of the linkage disk 7 and the upper cover 3. The locking assembly 8 can be unlocked by operating the dial 5 to overcome the spring force and press the locking rod 9 downward to disengage from the corresponding locking hole. The locking assembly 8 has a simple and reliable structure and high assembly efficiency.

[0035] As attached Figure 2 As shown, the linkage disk 7 is provided with a guide groove 15 extending vertically and communicating with the guide hole 11, and the side of the lock rod 9 is provided with a guide rod 16 extending out of the guide groove 15 and cooperating with the unlocking boss 14. The guide rod 16 is arranged on the lock rod 9 to cooperate with the unlocking boss 14 on the dial 5, so as to achieve the effect of converting the rotational motion into the vertical motion.

[0036] As attached Figure 2 and attached Figure 5 As shown, the unlocking boss 14 extends along the circumference of the dial 5, and the unlocking boss 14 includes an operating protrusion 17 located in the middle and guide inclined portions 18 arranged at both ends of the operating protrusion 17. When the unlocking boss 14 cooperates with the guide rod 16 on the lock rod 9, the guide inclined portions 18 can gradually press down the guide rod 16 until the guide rod 16 abuts against the lower end of the operating protrusion 17, so that the upper end of the lock rod 9 is completely separated from the corresponding lock hole, and the operation is easier and more comfortable.

[0037] As attached Figure 2 As shown, the linkage disk 7 is provided with a shaft sleeve 19, and the dial 5 is provided with a cylindrical protrusion 20 that matches the shaft sleeve 19. This design can achieve coaxial rotational cooperation between the two.

[0038] As attached Figures 2 to 6 As shown, the reset member 6 is a torsion spring, the dial 5 is provided with a toggle protrusion 21, the linkage disk 7 is provided with a support protrusion 22, the reset member 6 is sleeved on the outer periphery of the shaft sleeve 19, and the two ends of the reset member 6 are respectively pressed against the sides of the toggle protrusion 21 and the support protrusion 22. By providing a torsion spring, energy can be stored when the dial 5 and the linkage disk 7 rotate relative to each other, and energy is released to drive the linkage disk 7 to rotate when the linkage disk 7 and the upper cover 3 are unlocked.

[0039] As attached Figures 2 to 6 As shown, the upper end of the dial 5 is provided with a follower protrusion 23, and the inner side of the upper cover 3 is provided with two limit protrusions 24 for limiting the travel of the follower protrusion 23 when the dial 5 rotates. This design can limit the circumferential travel of the dial 5 and limit its dialing angle, making the opening and closing operations more accurate and the structure more reliable. In this embodiment, the forward and reverse rotation angles of the dial 5 can be limited to 90°.

[0040] As attached Figures 2 to 6 As shown, the linkage disk 7 is provided with an arc-shaped limit hole 25, and the rotary isolating switch body 1 is provided with a limit convex block 26 that matches the arc-shaped limit hole 25. When the linkage disk 7 rotates and the limit convex block 26 abuts against one end of the arc-shaped limit hole 25, the limit convex block 26 forms a circumferential limit for the linkage disk 7. This design can limit the circumferential travel of the linkage disk 7, limit the angle at which it drives the moving contact assembly 2 to rotate, and realize precise opening and closing. In this embodiment, the forward and reverse rotation angles of the linkage disk 7 can be limited to 90°.

[0041] As attached Figure 2 As shown, the inner end of the operating rod 4 is provided with a linkage protrusion 27 with a non-circular cross section, and the dial 5 is provided with a linkage groove 28 that matches the linkage protrusion 27. In this embodiment, the linkage protrusion and the linkage groove 28 are both square structures.

[0042] As attached Figure 1 As shown, a knob 29 is fixedly mounted on the outer end of the operating rod 4, and the two can be connected by screw locking.

Claims

1. An operating mechanism of a rotary isolating switch, mounted on a rotary isolating switch body (1) and used to drive a moving contact assembly (2) on the rotary isolating switch body (1) to rotate; characterized in that: The invention comprises an upper cover (3), an operating rod (4), a dial (5), a reset member (6), a linkage disk (7) and a locking assembly (8); the upper cover (3) is fixed on a rotary isolating switch body (1); the operating rod (4) passes through the upper cover (3) and is linked to a dial (5) arranged in the upper cover (3); the linkage disk (7) is arranged in the upper cover (3) and is linked to the movable contact assembly (2) in a circumferential direction; the dial (5) and the linkage disk (7) are coaxially arranged; two ends of the reset member (6) act on the dial (5) and the linkage disk (7) respectively; the locking assembly (8) cooperates with the dial (5); and when the dial (5) rotates, the locking assembly (8) has a locking state in which the linkage disk (7) and the upper cover (3) are locked, and an unlocking state in which the linkage disk (7) and the upper cover (3) are unlocked.

2. The operating mechanism of a rotary isolating switch according to claim 1, characterized in that: The locking assembly (8) comprises a locking rod (9) and a spring (10); a guide hole (11) is provided on the rotary isolating switch body (1); the locking rod (9) and the spring (10) are arranged in the guide hole (11); and the spring (10) applies an axial spring force to the locking rod (9); a first locking hole (12) and a second locking hole (13) are provided on the upper cover (3); under the action of the spring (10), the upper end of the locking rod (9) is inserted into the first locking hole (12) or the second locking hole (13) to achieve locking of the linkage disk (7) and the upper cover (3); and an unlocking boss (14) is provided on the dial (5) for pressing the locking rod (9) downward and disengaging from the first locking hole (12) or the second locking hole (13) when rotating.

3. The operating mechanism of a rotary isolating switch according to claim 2, characterized in that: The linkage disk (7) is provided with a guide groove (15) extending vertically and communicating with the guide hole (11), and the side of the lock rod (9) is provided with a guide rod (16) extending out of the guide groove (15) and cooperating with the unlocking boss (14).

4. The operating mechanism of a rotary isolating switch according to claim 3, characterized in that: The unlocking boss (14) extends along the circumference of the dial (5), and the unlocking boss (14) comprises an operating protrusion (17) located in the middle and guiding inclined surface portions (18) arranged at both ends of the operating protrusion (17).

5. The operating mechanism of a rotary isolating switch according to claim 1, characterized in that: The linkage disk (7) is provided with a shaft sleeve (19), and the dial (5) is provided with a columnar protrusion (20) that matches the shaft sleeve (19).

6. The operating mechanism of a rotary isolating switch according to claim 5, characterized in that: The reset member (6) is a torsion spring, the dial (5) is provided with a toggle protrusion (21), the linkage disk (7) is provided with a support protrusion (22), the reset member (6) is sleeved on the outer periphery of the shaft sleeve (19), and the two ends of the reset member (6) are respectively pressed against the side of the toggle protrusion (21) and the support protrusion (22).

7. The operating mechanism of a rotary isolating switch according to claim 1, characterized in that: The upper end of the dial (5) is provided with a follower protrusion (23), and the inner side of the upper cover (3) is provided with two limit protrusions (24) for limiting the travel of the follower protrusion (23) when the dial (5) rotates.

8. The operating mechanism of a rotary isolating switch according to claim 7, characterized in that: The linkage disk (7) is provided with an arc-shaped limiting hole (25), and the rotary isolating switch body (1) is provided with a limiting protrusion (26) matched with the arc-shaped limiting hole (25). When the linkage disk (7) rotates and the limiting protrusion (26) abuts against one end of the arc-shaped limiting hole (25), the limiting protrusion (26) forms a circumferential limit for the linkage disk (7).

9. The operating mechanism of a rotary isolating switch according to claim 1, characterized in that: The inner end of the operating rod (4) is provided with a linkage convex portion (27) with a non-circular cross section, and the dial (5) is provided with a linkage groove (28) that matches the linkage convex portion (27).

10. The operating mechanism of a rotary isolating switch according to claim 1, characterized in that: A knob (29) is fixedly mounted on the outer end of the operating rod (4).

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