Mechanical interlocking device suitable for load switch mechanism

Abstract

The utility model belongs to the field of electrical cabinets, and particularly relates to a mechanical interlocking device suitable for a load switch mechanism. Comprising a mechanical lock which is used for locking / unlocking manual operation of a load switch mechanism; the device further comprises a switch component which is installed corresponding to the mechanical lock, and the switch component is connected with an electric control loop in the load switch mechanism. And when the mechanical lock is locked, the switch component works, so that the electric control loop is disconnected, and the load switch mechanism cannot be electrically switched on and off. The utility model provides a mechanical interlocking device suitable for a load switch mechanism, and aims to solve the problem of misoperation risk of a conventional load switch mechanism and prevent the mechanism from being damaged by misoperation to threaten the personal safety of an operator.

Description

Technical Field

[0001] The utility model belongs to the field of electrical cabinets, and in particular relates to a mechanical interlocking device suitable for a load switch mechanism. Background Art

[0002] With the rapid development of my country's economy, the power industry, as a foundation, has also achieved long-term and rapid development. As one of the important equipment in power construction, high-voltage switchgear is widely used. In high-voltage switchgear, misoperation is one of the frequent accidents in the power system. When misoperation occurs, it often causes major accidents such as damage to power equipment, system power outages, and even casualties.

[0003] The load switch mechanism is a very important device in the switch cabinet, and misoperation of the load switch mechanism often occurs. Most of the reasons for misoperation of the load switch mechanism are that some load switch mechanisms are equipped with mechanical locks and electric control buttons at the same time. The mechanical lock is used to lock the load switch mechanism, and the electric control button is used to electrically control the opening and closing of the switch. Therefore, in practice, when the operator locks the load switch mechanism through the mechanical lock, if the operator presses the electric control button by mistake, the load switch mechanism will be damaged, and even personal injury may occur.

[0004] In summary, the load switch mechanism in the prior art has the problem of being damaged due to misoperation. Utility Model Content

[0005] The utility model provides a mechanical interlocking device suitable for a load switch mechanism, and aims to solve the problem of misoperation risk in a conventional load switch mechanism.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a mechanical interlocking device suitable for a load switch mechanism, comprising a mechanical lock, which is used to lock / unlock the manual operation of the load switch mechanism; and also comprising a switch component, which is installed corresponding to the mechanical lock, and the switch component is connected to an electric control circuit in the load switch mechanism; when the mechanical lock is locked, the switch component works, so that the electric control circuit is disconnected, and the load switch mechanism cannot be electrically opened and closed.

[0007] In this solution, a switch component is provided corresponding to the mechanical lock. When the mechanical lock is locked, the switch component can control the electric control circuit in the load switch mechanism to disconnect. When the electric control circuit is disconnected, the load switch mechanism cannot realize electric control opening and closing, which solves the problem that the load switch mechanism is damaged by electric drive when it is locked in the prior art.

[0008] Preferably, in order to ensure that the switch component can promptly control the electric control circuit to disconnect when the mechanical lock reaches the locking position, the switch component described in this solution is set corresponding to the lock tongue of the mechanical lock, and the lock tongue moves to the locking position and the switch component works.

[0009] In this solution, the switch component is arranged corresponding to the lock tongue. When the lock tongue is extended to the locking position, it means that the mechanical lock has locked the load switch mechanism. At the same time, when the lock tongue is extended to the locking position, the lock tongue contacts the switch component, and the switch component disconnects the electric control circuit.

[0010] Preferably, in order to disconnect the electric control circuit, the switch component is preferably a micro switch in this solution, and when the mechanical lock is locked / unlocked, the mechanical lock contacts / separates from the micro switch.

[0011] In this solution, the micro switch is set in the electric control circuit. When the mechanical lock is locked, the mechanical lock contacts the micro switch, and the micro switch disconnects the electric control circuit, so the load switch mechanism cannot be electrically driven to open and close. When the mechanical lock is unlocked, the mechanical lock is separated from the micro switch, and the micro switch conducts the electric control circuit, so the load switch mechanism can open and close normally.

[0012] Preferably, in order to prevent the switch component from interfering with the telescopic movement of the lock tongue, the solution preferably has the switch component disposed on the side surface of the lock tongue.

[0013] In this solution, since the switch component is located on the side of the lock tongue, the switch component will not interfere with the movement of the lock tongue when the lock tongue performs telescopic movement, thereby ensuring that the lock tongue can accurately lock the load switch mechanism.

[0014] Preferably, since the switch component is located on the side of the lock tongue, in order to ensure that the lock tongue can accurately act on the switch component, the lock tongue of the mechanical lock is preferably fixedly installed with a transmission member, and when the lock tongue is extended to the locking position, the transmission member contacts the switch component.

[0015] In this solution, the lock tongue of the mechanical lock is equipped with a transmission member. When the lock tongue is extended and retracted, the transmission member can be extended and retracted. When the lock tongue is extended to the locking position, the position to which the transmission member moves can directly contact the switch component, ensuring that the lock tongue of the mechanical lock can accurately match the switch component.

[0016] Preferably, since the lock tongue of a conventional mechanical lock will retract into the lock, in order to avoid damage to the structure of the mechanical lock, the present solution preferably has the transmission member installed at the front end of the lock tongue, and the transmission member is in an N-shape.

[0017] In this solution, the transmission member is installed at the front end of the lock tongue, so the lock tongue can be extended and retracted normally without interference from the transmission member. At the same time, since the lock tongue needs to be inserted into the locking groove to achieve locking, it is preferred that the transmission member is arranged in an N-shape so that the transmission member will not interfere with the locking groove, and the transmission member can enter and exit the locking groove normally.

[0018] Preferably, there is no installation base for installing the switch component inside the load switch mechanism. At the same time, in order to avoid the switch component interfering with the operation of the internal parts of the load switch mechanism, this scheme preferably configures the mechanical lock with an installation component, and the installation component is used for installing the switch component.

[0019] In this solution, a separate installation component is provided as the installation base of the switch component, which solves the problem that there is no switch component installation inside the load switch mechanism. At the same time, since the installation component is configured on the mechanical lock, it is ensured that the mechanical lock and the switch component are in a stable matching position.

[0020] The beneficial effect of the utility model is that: in the present solution, a switch component is provided corresponding to the mechanical lock, and when the mechanical lock is locked, the switch component can control the electric control circuit in the load switch mechanism to disconnect. When the electric control circuit is disconnected, the load switch mechanism cannot realize the electric control opening and closing, which solves the problem in the prior art that the load switch mechanism is damaged by the electric drive when the load switch mechanism is locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure when the mechanical lock is locked.

[0022] Figure 2 It is a schematic diagram of the structure when the mechanical lock is not locked.

[0023] Figure 3 Schematic diagram of the transmission parts.

[0024] Figure 4 Schematic diagram of the electric control circuit.

[0025] The reference numerals include: mechanical lock 1 , lock tongue 11 , switch component 2 , transmission component 3 , mounting component 4 , and load switch mechanism 5 . DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0027] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0028] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance.

[0029] Example 1

[0030] Basically as attached Figure 1 To Attachment Figure 2 As shown, a mechanical interlocking device suitable for a load switch mechanism is mainly used to adapt the load switch mechanism 5 so that the load switch mechanism 5 cannot be electrically opened or closed in a mechanically locked state.

[0031] In the embodiment of the present disclosure, the mechanical interlocking device preferably includes a mechanical lock 1 and a switch component 2. The mechanical lock 1 can be a mechanical lock 1 suitable for a load switch mechanism 5 in the prior art. The switch component 2 is installed corresponding to the mechanical lock 1, and the switch component 2 is connected to the electric control circuit in the load switch mechanism 5.

[0032] Take an application scenario as an example: when the mechanical lock 1 locks the load switch mechanism 5, the switch component 2 disconnects the electric control circuit, and the electric control button cannot control the load switch mechanism 5 to realize electric opening and closing, which solves the problem in the prior art that when the mechanical lock 1 is locked, the load switch mechanism 5 is damaged due to electric opening and closing.

[0033] In the disclosed embodiment, the switch component 2 is preferably a micro switch, which is connected to an electric control circuit, which includes an electric control button and a load switch mechanism 5. When the micro switch is working, the electric control circuit is disconnected, the electric control button cannot be powered normally, and the load switch mechanism 5 cannot realize electric opening and closing. Figure 4 shown.

[0034] In the embodiment of the present disclosure, the micro switch is arranged on the side of the lock tongue 11, so as to avoid interference with the movement of the lock tongue 11. In the embodiment of the present disclosure, the front end of the lock tongue 11 is provided with a transmission member 3. When the transmission member 3 follows the lock tongue 11 to perform telescopic movement, the transmission member 3 contacts or separates with the contact of the micro switch, so that the micro switch is switched between the normally open state and the normally closed state.

[0035] Take an application scenario as an example: when the lock tongue 11 of the mechanical lock 1 is extended, the lock tongue 11 of the mechanical lock 1 drives the transmission member 3 to move. When the lock tongue 11 of the mechanical lock 1 reaches the locked position, the transmission member 3 can contact the contact of the micro switch, so that the micro switch switches from the normally open state to the normally closed state, and the electric control circuit is disconnected. When the lock tongue 11 of the mechanical lock 1 exits the locked position, the transmission member 3 separates from the contact of the micro switch, so that the micro switch switches from the normally closed state to the normally open state, and the electric control circuit is connected.

[0036] It should be noted that: since the lock tongue 11 of the conventional mechanical lock 1 usually retracts into the mechanical lock 1, the structure of the mechanical lock 1 is made more compact. Therefore, in order not to destroy the original structure of the conventional mechanical lock 1 as much as possible and save costs, in the embodiment of the present disclosure, it is preferred to directly install the transmission member 3 at the front end of the lock tongue 11, thereby ensuring that the transmission member 3 will not hinder the retraction of the lock tongue 11. In addition, since the lock tongue 11 needs to be inserted into the corresponding locking groove when locking the load switch mechanism 5, it can be ensured that the lock tongue 11 locks the load switch mechanism 5. Based on the above reasons, in order to avoid the transmission member 3 from getting stuck in the locking groove, it is ensured that the lock tongue 11 can be smoothly inserted into the locking groove, or withdrawn from the locking groove. In the embodiment of the present disclosure, the transmission member 3 is preferably in an n shape. Therefore, in the embodiment of the present disclosure, when the transmission member 3 is arranged at the front end of the lock tongue 11, the transmission member 3 can also enter the locking groove, and the transmission member 3 will not interfere with the locking and unlocking of the lock tongue 11. Figure 3 shown.

[0037] In order to avoid interference with the internal components of the load switch mechanism 5 when the switch component 2 is installed inside the load switch mechanism 5, in the embodiment of the present disclosure, it is preferred that a mounting component 4 is configured at the bottom of the mechanical lock 1, and the mounting component 4 can be a mounting plate. The mounting plate extends to the side of the mechanical lock 1, and then the switch component 2 is installed. In the embodiment of the present disclosure, the switch component 2 can be installed on the mounting plate by setting fasteners, so that the switch component 2 remains stable.

[0038] The following is a further detailed description through a specific implementation method: When the mechanical lock 1 locks the load switch mechanism 5, the micro switch disconnects the electric control circuit, and the electric control button cannot control the load switch mechanism 5 to open and close the electric control, thereby avoiding misoperation. When the mechanical lock 1 unlocks the load switch mechanism 5, the micro switch opens the electric control circuit, and the electric control button can normally control the load switch mechanism 5 to open and close the electric control.

[0039] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A mechanical interlocking device suitable for a load switch mechanism, comprising a mechanical lock (1), wherein the mechanical lock (1) is used to lock / unlock the manual operation of the load switch mechanism; characterized in that: It also includes a switch component (2), the switch component (2) is installed corresponding to the mechanical lock (1), and the switch component (2) is connected to the electric control circuit in the load switch mechanism (5); When the mechanical lock (1) is locked, the switch component (2) operates, causing the electric control circuit to be disconnected, and the load switch mechanism (5) cannot be opened or closed electrically.

2. The mechanical interlocking device for load switch mechanism according to claim 1, characterized in that: The switch component (2) is arranged corresponding to the lock tongue (11) of the mechanical lock (1), and when the lock tongue (11) moves to a locking position, the switch component (2) operates.

3. The mechanical interlocking device for load switch mechanism according to claim 1 or 2, characterized in that: The switch component (2) is a micro switch, and when the mechanical lock (1) is locked / unlocked, the mechanical lock (1) contacts / separates from the micro switch.

4. The mechanical interlocking device for load switch mechanism according to claim 2, characterized in that: The switch component (2) is arranged on the side of the lock tongue (11).

5. The mechanical interlocking device for load switch mechanism according to claim 4 is characterized in that: A transmission member (3) is fixedly mounted on the lock tongue (11) of the mechanical lock (1); when the lock tongue (11) is extended to a locking position, the transmission member (3) drives the switch component (2) to operate.

6. The mechanical interlocking device for load switch mechanism according to claim 5, characterized in that: The transmission member (3) is installed at the front end of the locking tongue (11), and the transmission member (3) is in an N-shape.

7. The mechanical interlocking device for load switch mechanism according to claim 1, characterized in that: The mechanical lock (1) is provided with a mounting component (4), and the mounting component (4) is used for mounting the switch component (2).

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