A new type of quick-clamp interlocking plug-in box

Abstract

The present invention discloses a novel quick-clamp interlocking plug-in box, comprising a plug-in box shell, an inner interlocking part and an outer interlocking part; when the plug-in box needs to be plugged in or out, the turntable padlock is released, and the operating turntable is first rotated to the specified position. At this time, the fan-shaped notch of the limit turntable is located directly above the quick-clamp limit rod, and the quick-clamp limit rod of the push-pull quick clamp is pushed upward, and the quick-clamp limit rod rises into the fan-shaped notch of the limit turntable and clamps the limit turntable. Due to the rising of the quick-clamp limit rod, the locking foot pull rod and the locking foot of the push-pull quick clamp are pulled, so that the lock buckle of the locking foot is disengaged from the lock of the busbar cover; at the same time, the rotation of the operating turntable drives the transmission shaft to rotate synchronously, and the transmission shaft rotates to the specified position, and the opening pressure plate presses the opening button of the electric operating mechanism, and the switch is in the opening state; the automatic opening before unplugging the box is effectively achieved, and the switch can be closed only after plugging in place, thereby ensuring the safety of the operator.

Description

Technical Field

[0001] The invention relates to the technical field of busbar plug-in boxes, and in particular to a novel quick-clamp interlocking plug-in box. Background Art

[0002] In the prior art, the compact busbar plug-in box usually adopts the method of locking the locking pin and the busbar cover plate (such as Figure 9 (as shown), achieving the effect of restricting the plugging and unplugging of the plug-in box. A simple limit interlock is provided between the locking pin and the plug-in box door panel, and the locking pin cannot be opened when the box door is closed. At the same time, the box door is controlled by the operating handle of the manual operating mechanism. Only when the handle is in the open position can the box door be opened, thereby achieving the purpose of preventing the plug-in and unplugging of the plug-in box when the switch is closed. However, with the development of electrification, the operating mechanism of the plug-in box has been upgraded to an electric operating mechanism. When we choose an electric operating mechanism, because the electric operator has no external operating handle, the door can still be opened when the switch is closed. This poses a huge safety hazard and can easily cause harm to the operator. Summary of the Invention

[0003] The present invention aims to address the deficiencies of the above-mentioned prior art and proposes a novel quick-clamp interlocking plug-in box, comprising a plug-in box housing, an internal interlocking portion, and an external interlocking portion. The internal interlocking portion comprises a transmission shaft disposed within the plug-in box housing, the transmission shaft being longitudinally disposed above the electric operating mechanism, one end of the transmission shaft extending through a longitudinal side wall of the plug-in box housing, a trip pressure plate being rigidly connected to the middle portion of the transmission shaft, the trip pressure plate being disposed directly above the trip button of the electric operating mechanism.

[0004] The external interlocking part includes a limit dial, an operating dial and a push-pull quick clamp provided outside the plug-in box housing. The push-pull quick clamp includes a quick clamp limit rod, two locking foot pull rods and two locking feet. The quick clamp limit rod and the two locking foot pull rods are connected in a Y shape. The lower ends of the locking feet are provided with lock buckles that match the busbar cover plate. The middle parts of the locking feet are rotatably connected to the plug-in box housing, and the upper ends of the locking feet are connected to the locking foot pull rods.

[0005] The operating turntable is installed at the end of the transmission shaft, the limit turntable is sleeved on the transmission shaft and rotates synchronously with the transmission shaft, the quick clamp limit rod is arranged directly below the limit turntable, and a fan-shaped notch is opened on the limit turntable to accommodate the rising of the quick clamp limit rod.

[0006] In order to make the push-pull quick clamp easier to operate, the push-pull quick clamp further includes an operating handle, and the operating handle is connected to the lower end of the quick clamp limit rod at a right angle.

[0007] In order to prevent the operator from excessively lifting the operating handle and causing damage to the limit turntable, an inclined limit column is further provided between the right angle of the operating handle and the quick-clamp limit rod.

[0008] In order to ensure the convenience of operation, preferably, when the limit turntable is rotated 20° counterclockwise, the fan-shaped notch is located directly above the quick-clamp limit rod.

[0009] Preferably, when the transmission shaft rotates 20° counterclockwise, the opening pressure plate presses the opening button.

[0010] In order to facilitate the loading and unloading and maintenance of the equipment, preferably, the transmission shaft is a square shaft with a thread on the end, and the end with the thread passes through the plug-in box housing.

[0011] Preferably, the operating turntable is a star-shaped handle with threads at the axis, and is connected to the end of the square shaft through the threads of the star-shaped handle.

[0012] In order to ensure the safety of the equipment, preferably, the limit turntable is provided with a lower lock ear, and the plug-in box shell is provided with an upper lock ear corresponding to the lower lock ear. When the lower lock ear overlaps and cooperates with the upper lock ear, the quick clamp limit rod and the fan-shaped notch of the limit turntable are in a misaligned state, and the quick clamp limit rod cannot rise.

[0013] In order to ensure the safety of the equipment, preferably, a turntable padlock is hung when the upper padlock ear and the lower padlock ear overlap and cooperate.

[0014] Preferably, the outer cover of the external interlocking part is provided with a mechanism cover plate.

[0015] Working principle: In the present invention, when it is necessary to plug or unplug the plug-in box, release the turntable padlock, first rotate the operating turntable to the specified position (about 20 degrees counterclockwise), at this time the fan-shaped notch of the limit turntable is located directly above the quick clamp limit rod, and the quick clamp limit rod of the push-pull quick clamp is pushed upward, the quick clamp limit rod rises to the fan-shaped notch of the limit turntable and clamps the limit turntable. Due to the rise of the quick clamp limit rod, the locking foot pull rod and locking foot of the push-pull quick clamp are pulled, so that the lock buckle of the locking foot is disengaged from the lock of the busbar cover;

[0016] At the same time, the rotation of the operating dial drives the transmission shaft to rotate synchronously. The transmission shaft rotates to the specified position (about 20° counterclockwise), and the opening pressure plate presses the opening button of the electric operating mechanism, and the switch is in the opening state.

[0017] When the plug-in box is plugged in or completely pulled out, pull the quick clamp limit rod of the push-pull quick clamp downward, and the lock pin pull rod and lock pin of the push-pull quick clamp are reset. At the same time, due to the downward movement of the quick clamp limit rod, the limit turntable is released. After turning the operating turntable to the specified position (20° clockwise), the opening pressure plate no longer presses the opening button, and the closing operation can be performed normally.

[0018] Beneficial effects: In the present invention, (1) a quick-clip interlock structure is adopted to realize the effect of automatic opening before unplugging the box and closing the switch only after plugging in place, thereby ensuring the safety of the operator. Even if the operator forgets to open the switch due to negligence before operation, or mistakenly performs a closing operation during operation, it is impossible to enter the closed state.

[0019] (2) The use of a purely mechanical quick-clamp interlocking structure can ensure the reliability of the equipment and also ensure the effectiveness of the quick-clamp interlocking mechanism in the event of electrical damage.

[0020] (3) It effectively adapts to the plug-in box body based on electric operation, and is relatively convenient to install and disassemble. There is no need to make major changes to the original plug-in box body. The cost is low and it is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural diagram of a new type of quick-clamp interlocking plug-in box;

[0022] Figure 2 yes Figure 1 Face up to Figure 1 (Hidden mechanism cover);

[0023] Figure 3 yes Figure 1 Face up to Figure 2 ;

[0024] Figure 4 This is a top view of a new type of quick-clamp interlocking plug-in box (the opening pressure plate is offset for ease of display);

[0025] Figure 5 This is a schematic diagram of the external interlocking part when the locking pin is in the locked position;

[0026] Figure 6 yes Figure 5 Schematic diagram of the internal interlocking part in the state;

[0027] Figure 7 This is a schematic diagram of the external interlocking part when the locking pin is unlocked;

[0028] Figure 8 yes Figure 7 Schematic diagram of the internal interlocking part in the state;

[0029] Figure 9 This is a schematic diagram of the structure of the existing locking pin and busbar cover plate clamping in the background art;

[0030] In the figure: 1. Busbar body, 2. Plug-in box housing, 3. Locking foot, 4. Locking foot pull rod, 5. Push-pull quick clamp, 6. Quick clamp limit rod, 7. Operating turntable, 8. Limit turntable, 9. Mechanism cover, 10. Electric operating mechanism, 11. Drive shaft, 12. Opening pressure plate, 13. Turntable padlock, 14. Opening button, 15. Operating handle, 16. Limit column, 17. Lock buckle, 18. Fan-shaped notch. DETAILED DESCRIPTION

[0031] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0032] like Figure 1-8 As shown, a novel quick-clamp interlocking plug-in box comprises a plug-in box housing 2, an internal interlocking portion, and an external interlocking portion. The internal interlocking portion comprises a transmission shaft 11 disposed within the plug-in box housing 2. The transmission shaft 11 is a square shaft with a threaded end, one end of which extends through the plug-in box housing 2. The transmission shaft 11 is longitudinally disposed above the electric operating mechanism 10, with one end of the transmission shaft 11 extending through the longitudinal side wall of the plug-in box housing 2. A trip pressure plate 12 is rigidly connected to the middle portion of the transmission shaft 11. The trip pressure plate 12 is disposed directly above the trip button 14 of the electric operating mechanism 10.

[0033] The external interlocking part includes a limit turntable 8, an operating turntable 7 and a push-pull quick clamp 5 arranged outside the plug-in box shell 2. The push-pull quick clamp includes a quick clamp limit rod 6, two locking foot pull rods 4, two locking feet 3 and an operating handle 15. The quick clamp limit rod 6 and the two locking foot pull rods 4 are connected in a Y shape. The lower ends of the locking feet 3 are provided with lock buckles 17 that cooperate with the busbar cover. The middle parts of the locking feet 3 are rotatably connected to the plug-in box shell, and the upper ends of the locking feet 3 are connected to the locking foot pull rods 4; the operating handle 15 is connected to the lower end of the quick clamp limit rod 6 at a right angle; an inclined limit column 16 is provided between the right angle of the operating handle 15 and the quick clamp limit rod 6.

[0034] The operating dial 7 is mounted on the end of the transmission shaft 11. The operating dial 7 is a star-shaped handle with threads at its center, connected to the end of the square shaft via the threads of the star handle. The limit dial 8 is sleeved on the transmission shaft and rotates synchronously with the transmission shaft 11. The quick-clamp limit rod 6 is located directly below the limit dial. The limit dial 8 has a fan-shaped notch 18 large enough to accommodate the rise of the quick-clamp limit rod 6. The limit dial is provided with a lower locking lug, and the plug-in box housing is provided with an upper locking lug corresponding to the lower locking lug. When the lower locking lug overlaps with the upper locking lug, the quick-clamp limit rod and the fan-shaped notch of the limit dial are misaligned, preventing the quick-clamp limit rod from rising. When the upper locking lug overlaps with the lower locking lug, a rotary padlock 13 is attached.

[0035] In this embodiment, the outer cover of the outer interlocking part is provided with a mechanism cover plate 9

[0036] In this embodiment, when the limit turntable rotates 20° counterclockwise, the fan-shaped notch is located directly above the quick-clamp limit rod; when the transmission shaft rotates 20° counterclockwise, the opening pressure plate presses the opening button.

[0037] In summary of the above embodiments, in use, if Figure 5-8 As shown, when the plug-in or unplug-out box needs to be plugged in or out, the turntable padlock is released, and the operating turntable is first turned to the specified position (about 20° counterclockwise). At this time, the fan-shaped notch of the limit turntable is located directly above the quick-clamp limit rod, and the quick-clamp limit rod of the push-pull quick clamp is pushed upward. The quick-clamp limit rod rises into the fan-shaped notch of the limit turntable and clamps the limit turntable. Due to the rise of the quick-clamp limit rod, the locking foot pull rod and locking foot of the push-pull quick clamp are pulled, so that the lock buckle of the locking foot is disengaged from the lock of the busbar cover;

[0038] At the same time, the rotation of the operating dial drives the transmission shaft to rotate synchronously. The transmission shaft rotates to the specified position (about 20° counterclockwise), and the opening pressure plate presses the opening button of the electric operating mechanism, and the switch is in the opening state.

[0039] When the plug-in box is plugged in or completely pulled out, pull the quick clamp limit rod of the push-pull quick clamp downward, and the lock pin pull rod and lock pin of the push-pull quick clamp are reset. At the same time, due to the downward movement of the quick clamp limit rod, the limit turntable is released. After turning the operating turntable to the specified position (20° clockwise), the opening pressure plate no longer presses the opening button, and the closing operation can be performed normally.

[0040] The above description is only a preferred embodiment of the present invention and is not intended 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.

Claims

1. A quick-clamp interlocking plug-in box, characterized in that: It includes a plug-in box housing, an internal interlocking part, and an external interlocking part; the internal interlocking part includes a transmission shaft arranged in the plug-in box housing, the transmission shaft is arranged longitudinally above the electric operating mechanism, one end of the transmission shaft passes through the longitudinal side wall of the plug-in box housing, and the middle part of the transmission shaft is rigidly connected to a trip pressure plate, and the trip pressure plate is arranged directly above the trip button of the electric operating mechanism; The external interlocking part includes a limit dial, an operating dial and a push-pull quick clamp provided outside the plug-in box housing. The push-pull quick clamp includes a quick clamp limit rod, two locking foot pull rods and two locking feet. The quick clamp limit rod and the two locking foot pull rods are connected in a Y shape. The lower ends of the locking feet are provided with lock buckles that match the busbar cover plate. The middle parts of the locking feet are rotatably connected to the plug-in box housing, and the upper ends of the locking feet are connected to the locking foot pull rods. The operating turntable is installed at the end of the transmission shaft, the limit turntable is sleeved on the transmission shaft and rotates synchronously with the transmission shaft, the quick clamp limit rod is located directly below the limit turntable, and a fan-shaped notch is provided on the limit turntable to accommodate the rise of the quick clamp limit rod; The push-pull quick clamp further comprises an operating handle, which is connected at a right angle to the lower end of the quick clamp limit rod; The limit turntable is provided with a lower padlock ear, and the plug-in box shell is provided with an upper padlock ear corresponding to the lower padlock ear. When the lower padlock ear overlaps and cooperates with the upper padlock ear, the quick-clamp limit rod and the fan-shaped notch of the limit turntable are in a misaligned state, and the quick-clamp limit rod cannot rise.

2. A quick-clip interlocking plug-in box according to claim 1, characterized in that: An inclined limiting column is provided between the right angle of the operating handle and the quick-clamp limiting rod.

3. The quick-clip interlocking junction box according to claim 1, characterized in that: When the limit turntable rotates 20 degrees counterclockwise, the fan-shaped notch is located just above the quick-clamp limit rod.

4. The quick-clip interlocking junction box according to claim 3, characterized in that: When the transmission shaft rotates 20° counterclockwise, the opening pressure plate presses the opening button.

5. The quick-clip interlocking junction box according to claim 1, characterized in that: The transmission shaft is a square shaft with a thread at the end, and the end with the thread passes through the plug-in box shell.

6. The quick-clip interlocking plug-in box according to claim 5, characterized in that: The operating turntable is a star-shaped handle with threads at the axis, and is connected to the end of the square shaft through the threads of the star-shaped handle.

7. The quick-clip interlocking junction box according to claim 1, characterized in that: When the upper padlock ear and the lower padlock ear are overlapped and matched, a rotary padlock is hung.

8. The quick-clip interlocking junction box according to claim 1, characterized in that: The outer cover of the external interlocking part is provided with a mechanism cover plate.

Images