High-safety frequency conversion manual bypass cabinet

Abstract

The utility model relates to the technical field of frequency conversion manual bypass cabinets, in particular to a high-safety frequency conversion manual bypass cabinet which comprises a cabinet body, and a cabinet door is installed on the front face of the cabinet body. An operation structure is mounted on the cabinet body, the operation structure comprises a mounting plate, the mounting plate is fixedly mounted on the front surface of the cabinet body, a knife switch assembly is rotatably mounted on the mounting plate, a first slot and a second slot are formed in the surface of the knife switch assembly, a movable slot is formed in the mounting plate, and the first slot and the second slot are arranged in the movable slot. Inserting rods are slidably mounted at the bottom ends of the inner sides of the movable grooves, pull rods are fixedly connected to the front faces of the inserting rods, springs are fixedly connected to the bottom faces of the inserting rods, and connecting rods are fixedly connected to the right side walls of the inserting rods. According to the utility model, the surface of the knife switch assembly is provided with the first slot and the second slot, and the first slot and the second slot are matched with the insertion rod, so that the knife switch assembly can be fixed in two states, and the use safety of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable frequency manual bypass cabinets, and more specifically, to a highly safe variable frequency manual bypass cabinet. Background Art

[0002] At present, high-voltage inverter manual bypass cabinets are widely used in motor systems. Three high-voltage isolation switches need to be installed in the cabinet to realize the switching between the motor's industrial frequency and variable frequency working states.

[0003] In this regard, China applied for patent number: CN202221553315.5, which discloses a manual bypass cabinet interlocking device, including: a mounting frame; a first knife assembly, the first piercing assembly includes a first mounting plate mounted on the mounting frame and a handle assembly mounted on the first mounting plate. The utility model limits the second handle by a limit block. When the first handle is in an open state, the second handle cannot perform a closing operation. The extension and retraction of the telescopic mechanism is controlled by the coordinated use of a proximity sensor and a relay, and the third handle is blocked by the telescopic component on the telescopic mechanism. When the first handle and the second handle contact with the proximity sensor, the telescopic component on the telescopic mechanism is driven to retract by the coordinated use of the proximity sensor and the relay, thereby eliminating the limit on the third handle, and the third handle can be closed. The operation is simple and convenient, and the safe use of the bypass cabinet is effectively guaranteed.

[0004] The device fixes the turntable in a fixed position by arranging a locking rod that can be inserted into a locking hole on the turntable. However, during use, since there is only one set of locking holes, it can only limit the turntable in the closed state, but not the turntable in the open state. The safety is relatively low. During the movement, the staff may easily push the turntable by mistake, causing the turntable to close by itself, which poses a certain safety hazard.

[0005] Therefore, in order to solve the above technical problems, the present application proposes a highly safe variable frequency manual bypass cabinet. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a highly safe variable frequency manual bypass cabinet.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A high-safety variable frequency manual bypass cabinet comprises: a cabinet body, a cabinet door is installed on the front of the cabinet body;

[0009] An operating structure is installed on the cabinet, and the operating structure includes a mounting plate, the mounting plate is fixedly mounted on the front side of the cabinet, a knife gate assembly is rotatably mounted on the mounting plate, a first slot and a second slot are provided on the surface of the knife gate assembly, a movable slot is provided inside the mounting plate, an insertion rod is slidably mounted on the inner bottom end of the movable slot, a pull rod is fixedly connected to the front side of the insertion rod, a spring is fixedly connected to the bottom surface of the insertion rod, a connecting rod is fixedly connected to the right side wall of the insertion rod, a first indicator block is fixedly connected to the upper end of the connecting rod, a second indicator block is fixedly connected to the top surface of the first indicator block, and a transparent plate is fixedly mounted on the front side of the mounting plate.

[0010] Preferably, the first slot and the second slot have the same shape, and the upper end of the insertion rod is inserted into the first slot.

[0011] Preferably, the pull rod is exposed on the front side of the mounting plate, and one end of the spring is fixedly connected to the inner wall of the movable groove.

[0012] Preferably, the connecting rod is located on the right side of the knife blade assembly.

[0013] Preferably, the first indicator block and the second indicator block are both movably mounted on the inner upper end of the movable groove, the first indicator block and the second indicator block have different colors, and the first indicator block and the second indicator block are both located on the rear side of the transparent plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, a first slot and a second slot are provided on the surface of the knife gate assembly. When the gate is opened, the first slot is located on the upper side of the plunger, and the plunger can be inserted upward into the first slot under the action of a spring, so that the knife gate assembly can be fixed and limited, so that the knife gate assembly remains in an open state. When the gate needs to be closed, the pull rod is pulled downward, and the pull rod drives the plunger to descend in the movable groove, and the plunger is away from the knife gate assembly and can be pulled out of the first slot. Then the knife gate assembly is rotated. When the knife gate assembly rotates, the positions of the first slot and the second slot are adjusted, so that the second slot is located on the upper side of the plunger. When the pull rod is released, the plunger will be inserted into the second slot under the action of the spring, so that the knife gate assembly in the closed state can be fixed and limited, and the knife gate assembly can be fixed in two states, which can improve the safety of the device.

[0016] 2. In the utility model, when the plug rod approaches or moves away from the knife gate assembly, it can drive the first indicator block and the second indicator block to move up and down, so that the first indicator block and the second indicator block are respectively aligned with the transparent plate front and back. The user can observe the color on the first indicator block or the second indicator block through the transparent plate to determine whether the plug rod is stably inserted in the first slot or the second slot. When the plug rod is raised, the first indicator block and the second indicator block are driven to rise through the connecting rod, and the first indicator block is aligned with the transparent plate front and back, so that the color on the first indicator block can be observed through the transparent plate. When the color of the second indicator block is observed through the transparent plate, it means that the plug rod is not inserted in the first slot or the second slot. At this time, the angle of the knife gate assembly is not fixed, that is, the knife gate assembly or the pull rod needs to be adjusted in time to ensure safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a bottom view schematic diagram of the operating structure of the utility model;

[0020] Figure 3 It is a schematic side cross-sectional view of the structure of the movable groove of the utility model;

[0021] Figure 4 It is a schematic side view of the structure of the knife switch assembly and the connecting rod of the utility model.

[0022] 1. Cabinet body; 11. Cabinet door; 2. Operating structure; 21. Mounting plate; 22. Switch assembly; 23. First slot; 24. Second slot; 25. Movable slot; 26. Insert rod; 27. Pull rod; 28. Spring; 29. ​​Connecting rod; 210. First indicator block; 211. Second indicator block; 212. Transparent plate. DETAILED DESCRIPTION

[0023] See also Figure 1-4 , the utility model provides a high-safety variable frequency manual bypass cabinet embodiment:

[0024] The cabinet body 1, cabinet door 11, mounting plate 21 and switch assembly 22 used in the present application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be repeated here.

[0025] A high-safety variable frequency manual bypass cabinet comprises: a cabinet body 1, a cabinet door 11 is installed on the front of the cabinet body 1;

[0026] An operating structure 2 is installed on the cabinet 1, and the operating structure 2 includes a mounting plate 21, which is fixedly mounted on the front of the cabinet 1, and a knife assembly 22 is rotatably mounted on the mounting plate 21. The surface of the knife assembly 22 is provided with a first slot 23 and a second slot 24, and an active slot 25 is provided inside the mounting plate 21. A plug rod 26 is slidably installed at the inner bottom end of the active slot 25, and a pull rod 27 is fixedly connected to the front of the plug rod 26, and a spring 28 is fixedly connected to the bottom surface of the plug rod 26. A connecting rod 29 is fixedly connected to the right wall of the plug rod 26, and a first indicator block 210 is fixedly connected to the upper end of the connecting rod 29. The top of the first indicator block 210 The first slot 23 is located on the upper side of the plug rod 26, and the plug rod 26 can be inserted upward into the first slot 23 under the action of the spring 28, which can limit the position of the knife assembly 22 so that the knife assembly 22 remains in the open state. When the knife assembly 22 needs to be closed, the pull rod 27 is pulled downward, and the pull rod 27 drives the plug rod 26 to descend in the movable groove 25, and the plug rod 26 is away from the knife assembly 22 and can be pulled out of the first slot 23, and then the knife assembly 22 is rotated. When the knife assembly 22 rotates, the position of the first slot 23 and the second slot 24 will be adjusted, so that the knife assembly 22 can be closed. The second slot 24 is located on the upper side of the plug rod 26. When the pull rod 27 is released, the plug rod 26 will be inserted into the second slot 24 under the action of the spring 28, which can fix the knife assembly 22 in the closed state, and can ensure that the knife assembly 22 is fixed in two states, which can improve the safety of the device. When the plug rod 26 approaches or moves away from the knife assembly 22, it can drive the first indicator block 210 and the second indicator block 211 to move up and down, so that the first indicator block 210 and the second indicator block 211 are aligned with the transparent plate 212 front and back, respectively, and the user can observe the color on the first indicator block 210 or the second indicator block 211 through the transparent plate 212 , in order to judge whether the insertion rod 26 is stably inserted in the first slot 23 or the second slot 24. When the insertion rod 26 rises, the first indicator block 210 and the second indicator block 211 are driven to rise through the connecting rod 29, and the first indicator block 210 is aligned with the transparent plate 212 front and back, so that the color on the first indicator block 210 can be observed through the transparent plate 212. When the color of the second indicator block 211 is observed through the transparent plate 212, it means that the insertion rod 26 is not inserted in the first slot 23 or the second slot 24. At this time, the angle of the knife assembly 22 is not fixed, that is, the knife assembly 22 or the pull rod 27 needs to be adjusted in time to ensure safe operation.

[0027] Furthermore, the first slot 23 and the second slot 24 have the same shape, and the upper end of the insertion rod 26 is inserted into the inside of the first slot 23. When the knife gate assembly 22 is closed, the insertion rod 26 can be inserted into the second slot 24. When the knife gate assembly 22 is opened, the insertion rod 26 can be inserted into the first slot 23 to fix the angles of the two states of the knife gate assembly 22.

[0028] Furthermore, the pull rod 27 is exposed from the front side of the mounting plate 21 , and one end of the spring 28 is fixedly connected to the inner wall of the movable slot 25 . The spring 28 provides power for the insertion rod 26 to be lifted in the movable slot 25 and inserted into the first slot 23 or the second slot 24 .

[0029] Furthermore, the connecting rod 29 is located on the right side of the knife assembly 22 , and the insertion rod 26 located on the lower side can drive the movement of the first indicating block 210 and the second indicating block 211 on the upper side of the knife assembly 22 through the connecting rod 29 .

[0030] Furthermore, the first indicator block 210 and the second indicator block 211 are both movably mounted on the inner upper end of the movable groove 25. The first indicator block 210 and the second indicator block 211 are of different colors. The first indicator block 210 and the second indicator block 211 are both located on the rear side of the transparent plate 212. The first indicator block 210 and the second indicator block 211 can be observed through the transparent plate 212 to determine the position between the insertion rod 26 and the knife assembly 22.

[0031] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A high-safety variable frequency manual bypass cabinet, comprising: A cabinet body (1), wherein a cabinet door (11) is installed on the front side of the cabinet body (1); Features: An operating structure (2) is installed on the cabinet (1), and the operating structure (2) comprises a mounting plate (21), the mounting plate (21) is fixedly mounted on the front of the cabinet (1), a knife switch assembly (22) is rotatably mounted on the mounting plate (21), a first slot (23) and a second slot (24) are provided on the surface of the knife switch assembly (22), a movable slot (25) is provided inside the mounting plate (21), and a slot is slidably mounted on the inner bottom end of the movable slot (25). Rod (26), the front surface of the insertion rod (26) is fixedly connected with a pull rod (27), the bottom surface of the insertion rod (26) is fixedly connected with a spring (28), the right side wall of the insertion rod (26) is fixedly connected with a connecting rod (29), the upper end of the connecting rod (29) is fixedly connected with a first indicator block (210), the top surface of the first indicator block (210) is fixedly connected with a second indicator block (211), and the front surface of the mounting plate (21) is fixedly installed with a transparent plate (212).

2. A high-safety variable frequency manual bypass cabinet according to claim 1, characterized in that: The first slot (23) and the second slot (24) have the same shape, and the upper end of the insertion rod (26) is inserted into the inside of the first slot (23).

3. A high-safety variable frequency manual bypass cabinet according to claim 1, characterized in that: The pull rod (27) is exposed on the front side of the mounting plate (21), and one end of the spring (28) is fixedly connected to the inner wall of the movable groove (25).

4. A high-safety variable frequency manual bypass cabinet according to claim 1, characterized in that: The connecting rod (29) is located on the right side of the knife assembly (22).

5. A high-safety variable frequency manual bypass cabinet according to claim 1, characterized in that: The first indicating block (210) and the second indicating block (211) are both movably mounted on the inner upper end of the movable groove (25); the first indicating block (210) and the second indicating block (211) have different colors; and the first indicating block (210) and the second indicating block (211) are both located on the rear side of the transparent plate (212).

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