Remote control operation disconnecting switch automatic opening and unlocking structure

Abstract

According to the basic technical scheme, the remote control operation intelligent disconnecting switch automatic opening and unlocking structure comprises a long tail lock hook, a lock hook buckle and a long groove in the lower end of a mechanical arm push-pull rod. A long-tail latch hook is designed on a closing latch hook, a latch hook buckle is designed on a closing static contact of the intelligent isolating switch, a long groove is designed at the position of a rod head of a push-pull rod of a manipulator, a pin shaft is arranged between two electrified arms, and a rotating fulcrum shaft based on the lever principle is arranged at the rotating position of the long-tail latch hook. The long-tail lock hook is provided with a return spring so that the long-tail lock hook can reset conveniently. And the lock hook buckle is fixed on the static contact of the intelligent isolating switch through a screw or a rivet. The long groove of the rod head of the push-pull rod penetrates through the pin shaft of the intelligent isolation switch energizing arm, and the long groove can slide up and down along the pin shaft.

Description

Technical Field

[0001] The present invention belongs to the field of innovation in the automation and intelligence of power distribution network equipment, and particularly relates to an automatic opening and unlocking structure for a remotely controlled intelligent disconnecting switch. Background Art

[0002] Disconnecting switches are widely used in high and low voltage power distribution systems, control systems, and electrical equipment. Their function is to isolate high voltage power sources and ensure the safety of maintenance personnel. They are connected in series in the circuit. When the circuit needs to be repaired, the disconnecting switch is opened to disconnect the high voltage electricity downstream and form an obvious disconnection opening. For the disconnecting switches used in power transformer substations, the locking hooks on the moving contact energizing arms in the closed state are all hooked into the keyholes of the static contacts to prevent the energizing arms from slipping. When manually operating the opening, first use an operating rod to pull open the locking hook, and then manually perform the opening. However, to achieve the automated and intelligent operation of disconnecting switches in the power distribution network, intelligent disconnecting switches have increasingly appeared in power distribution network equipment in recent years to replace disconnecting switches. Since the locking hook has not been opened first, the intelligent disconnecting switch cannot perform automatic opening. To achieve the remote control operation and automatic opening of the intelligent disconnecting switch, the problem of automatic unlocking must be solved first to achieve the automatic opening of the disconnecting switch.

[0003] Problems existing in current disconnecting switches: Current disconnecting switches require operators to use an operating rod to operate the opening and closing. Operators need to come into contact with high voltage electricity, which is very unsafe during operation. In addition, it is time-consuming and laborious. Summary of the Invention

[0004] The object of the present invention is to provide an automatic opening and unlocking structure for a remotely controlled disconnecting switch to achieve the automation and intelligence of the opening and closing of the disconnecting switch, so as to solve the technical problems existing in the automated and intelligent opening and closing of the disconnecting switch, and make the operation of the disconnecting switch safer, time-saving, and labor-saving.

[0005] According to the above object, the basic technical solution of the present invention is: An automatic opening and unlocking structure for a remotely controlled disconnecting switch, including a long-tail locking hook, a locking hook buckle, and a long slot at the lower end of the manipulator push-pull rod. It is characterized in that: the long-tail locking hook is fixed to the rotating support shaft and can rotate around the rotating support shaft, and the long-tail locking hook can be buckled or disengaged from the locking hook buckle.

[0006] Further, the locking hook buckle is fixed to the static contact of the intelligent disconnecting switch.

[0007] Furthermore, the rotating support shaft is fixed on the energizing arm of the intelligent disconnecting switch.

[0008] Furthermore, a return spring is installed on the long-tail locking hook to facilitate the reset of the long-tail locking hook.

[0009] Furthermore, the long slot of the push rod head is sleeved on the pin shaft of the energizing arm of the intelligent disconnecting switch, and the long slot can slide up and down along the pin shaft.

[0010] Furthermore, the pin shaft is fixed on the energizing arm of the intelligent disconnecting switch.

[0011] The beneficial effects to be achieved by the present invention are as follows:

[0012] 1. Realize remote control and remote opening and closing of the intelligent disconnecting switch, avoid the extremely unsafe situation of manual operation of opening and closing, and save time and effort.

[0013] 2. Realize the closing stability and reliability of the disconnecting switch, and prevent the energizing arm from automatically slipping, resulting in power transmission insecurity.

[0014] 3. Accelerate the realization of the automation and intelligence of the disconnecting switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the intelligent disconnecting switch according to the embodiment of the product of the present invention;

[0016] Figure 2 It is a schematic diagram of the long-tail lock hook and the lock hook buckle according to the embodiment of the product of the present invention;

[0017] Figure 3 It is a schematic diagram of the state where the long-tail lock hook of the embodiment of the product of the present invention is buckled in the lock hook buckle;

[0018] Figure 4 It is a state where the long-tail lock hook of the present invention is buckled in the lock hook buckle when the intelligent disconnecting switch is in the closing state, and a partial enlarged view of the long slot at the position of the push rod head;

[0019] Figure 5 It is a state where the long-tail lock hook of the embodiment of the product of the present invention is disengaged from the lock hook buckle when the intelligent disconnecting switch is in the open state, and a schematic diagram of the positions of the long slot and the pin shaft of the push rod;

[0020] Figure 6 It is a schematic diagram of the structure of the push rod with a long slot according to the embodiment of the product of the present invention;

[0021] In the figure: 1. Operator; 2. Driving cable; 3. Control signal receiver; 4. Intelligent disconnecting switch; 5. Driving mechanism; 6. Static contact; 7. Lock hook buckle; 701. Long-tail lock hook; 702. Rotating support shaft; 703. Return spring; 704. Lock hook frame; 8. Manipulator push rod; 801. Long slot; 802. Pin shaft; 9. Energizing arm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Combined with Figures 1-6, is a schematic diagram of the automatic opening and unlocking structure of a remotely operated disconnecting switch according to the present invention. The automatic opening and unlocking structure of the remotely operated disconnecting switch includes an intelligent disconnecting switch 4, which is connected to a control signal receiver 3 through a driving cable 2. After receiving the command signal from the operator 1 and performing digital processing, the control signal receiver 3 supplies the power of the control signal receiver 3 to the driving mechanism 5 through the driving cable 2. After the driving mechanism 5 is powered on, it rotates forward or backward, and the driving mechanism 5 drives the manipulator push rod 8 to move up and down. At the same time, it drives the energizing arm 9 of the intelligent disconnecting switch up or down to realize the closing or opening of the switch. When the control signal receiver 3 receives the opening command signal from the operator 1, the driving motor 5 is powered on and rotates forward. Since a long slot 801 is designed at the lower end position of the manipulator push rod 8, the manipulator push rod 8 can move downward first, pushing the long-tail locking hook 701 fixed on the locking hook frame 704 to rotate around the rotating support shaft 702. The long-tail locking hook 701 disengages from the locking hook buckle 7, and at the same time, the top position of the long slot 801 on the manipulator push rod contacts the pin shaft 802. As the driving mechanism 5 continues to push the manipulator push rod 8 downward, the energizing arm 9 can then disengage from the static contact 6, achieving the purpose of automatic opening. Among them, the locking hook frame 704 is fixed to the energizing arm 9 of the intelligent disconnecting switch 4 with screws; the rotating support shaft 702 is riveted to the locking hook frame 704; the long-tail locking hook 701 is equipped with a return spring 703; the locking hook buckle 7 is fixed to the static contact 6 with screws; the pin shaft 802 is riveted to the energizing arm 9.

[0023] When the control signal receiver 3 receives the closing command signal from the operator 1, the driving mechanism 5 is powered on and rotates backward, pulling the manipulator push rod 8 upward, and at the same time pulling the energizing arm 9 upward until the energizing arm 9 is clamped into the static contact 6. At the same time, there is a long slot structure at the lower end of the manipulator push rod 8, which will move away from the long-tail locking hook 701. The long-tail locking hook 701 returns under the pulling force of the return spring 703 and firmly buckles with the locking hook buckle 7 to prevent the energizing arm 9 from slipping off by itself, achieving a firm closing purpose. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0024] Although the following terms are used more frequently in this text: 1. operator; 2. drive cable; 3. control signal receiver; 4. intelligent disconnecting switch; 5. drive mechanism; 6. static contact; 7. locking hook; 701. long-tail locking hook; 702. rotating support shaft; 703. return spring; 704. long-tail locking hook bracket; 8. manipulator push-pull rod; 801. long slot; 802. pin shaft; 9. energizing arm, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

[0025] The above introduces an automatic opening and unlocking structure of a remotely operated disconnecting switch provided by the present invention. In this introduction, specific preferred embodiments are used to elaborate on the principle and implementation manner of the present invention. These embodiments are only used to help understand the principle and core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the design idea of the present invention, the implementation schemes in the above embodiments can be further combined or replaced, and several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A remote-controlled disconnect switch automatic opening and unlocking structure, comprising a long-tail lock hook (701) and a lock hook buckle (7), characterized in that: The long-tail lock hook (701) is fixed to the lock hook frame (704) via a rotating support shaft (702); the rotating support shaft (702) is riveted to the lock hook frame (704); the lock hook frame (704) is fixed to the power-on arm (9) of the intelligent disconnector (4) by screws, and the long-tail lock hook (701) is installed with a return spring (703) so that the long-tail lock hook (701) can return to its original position in time after the intelligent disconnector (4) is closed, and the lock hook buckle (7) is fixed to the static contact (6) by screws.

2. A remote-controlled disconnect switch automatic opening and unlocking structure according to claim 1, comprising a long groove (801) on the manipulator push-pull rod, characterized in that: When the intelligent disconnector (4) is opened, the manipulator push-pull rod (8) pushes the long-tail lock hook (701) to rotate around the rotating support shaft (702), so that the long-tail lock hook (701) is separated from the lock hook buckle (7). At the same time, the top position of the long slot (801) on the manipulator push-pull rod contacts the pin shaft (802), pushing the energizing arm (9) to separate from the static contact (6) of the intelligent disconnector, thereby achieving the purpose of opening the switch. The pin shaft (802) is riveted to the energizing arm (9).

Images