Self-locking frequency conversion control cabinet

Abstract

The utility model discloses a self-locking frequency conversion control cabinet which comprises a control cabinet, a cabinet door is movably arranged on one side of the surface of the control cabinet through a rotating shaft, a control mechanism for controlling whether the cabinet door is closed or not is arranged on one side of the surface of the control cabinet, and the control mechanism comprises a bottom plate, a telescopic base, a top plate, a limiting air cylinder, an elastic air bag and a connecting hose. A bottom plate is fixedly arranged on one side of the surface of the control cabinet, a telescopic base is fixedly arranged in the middle of the upper end of the bottom plate, a top plate is fixedly arranged at the upper end of the telescopic base, a limiting air cylinder is fixedly arranged at the position, on one side of the telescopic base, of the upper end of the bottom plate, and the movable end of the limiting air cylinder penetrates through the top plate and extends to the upper end of the top plate. The device has a good use effect, can prevent the cabinet door of the control cabinet from being automatically closed when a person operates the control cabinet, and can automatically close the cabinet door after the operator walks away so as to prevent the situation that components in the control cabinet are damaged due to the fact that the cabinet door forgets to be closed.

Description

Technical Field

[0001] The utility model relates to the technical field of variable frequency control cabinets, and specifically relates to a self-locking variable frequency control cabinet. Background Technique

[0002] Variable frequency control cabinets are mainly used to adjust the working frequency of equipment to reduce energy consumption and can start equipment smoothly. They can be widely applied to various medium-voltage motor equipment such as pumps, fans, air compressors, rolling mills, injection molding machines, and belt conveyors in industries such as metallurgy, chemical industry, petroleum, and electric motors. The variable frequency control cabinet is composed of an internally installed frequency converter plus peripheral control and display electrical components and a cabinet body, and is an AC drive device and energy-saving device for variable frequency speed regulation control of three-phase AC motors.

[0003] In the prior art, in order to protect the internal components of the variable frequency control cabinet, the variable frequency control cabinet should be set in a self-locking form to prevent staff from forgetting to close the cabinet door, resulting in damage to the internal components of the control cabinet. For example, according to a Chinese patent with the application number 202321680623.9, a self-locking variable frequency control cabinet, when in use, the staff can open the cabinet door by pulling the handle, stand in front of the cabinet door and hold the cabinet door, and then operate in front of the variable frequency control cabinet. When the staff finishes operating the variable frequency control cabinet, they can leave by themselves, and the cabinet door can be closed through the return spring, thus preventing the situation of the cabinet door being left unclosed or forgotten to be closed.

[0004] However, in this way, the staff is blocked by the cabinet door throughout the process, and one hand is blocked by the cabinet door, making it very inconvenient to move, thus making it inconvenient to operate the components inside the cabinet body. Therefore, in view of this problem, a self-locking variable frequency control cabinet needs to be improved. Content of the Utility Model

[0005] The purpose of the utility model is to provide a self-locking variable frequency control cabinet to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A self-locking variable frequency control cabinet, including a control cabinet, one side of the surface of the control cabinet is movably provided with a cabinet door through a rotating shaft, and one side of the surface of the control cabinet is provided with a control mechanism for controlling whether the cabinet door is closed or not. The control mechanism includes a bottom plate, a telescopic base, a top plate, a limiting air cylinder, an elastic airbag, and a connecting hose. One side of the surface of the control cabinet is fixedly provided with a bottom plate, the middle of the upper end of the bottom plate is fixedly provided with a telescopic base, the upper end of the telescopic base is fixedly provided with a top plate, one side of the telescopic base at the upper end of the bottom plate is fixedly provided with a limiting air cylinder, the moving end of the limiting air cylinder passes through the top plate and extends to the upper end of the top plate, the middle of the inner side of the telescopic base is fixedly provided with an elastic airbag, and a connecting hose is fixedly provided on the surface of the elastic airbag.

[0007] Preferably, a limiting plate is provided at the lower end of the outer surface of the cabinet door. The function of this limiting plate is that when an operator needs to operate the components inside the control cabinet, the operator will stand on the upper end of the top plate and cause the telescopic base to contract, squeezing the elastic airbag, so that the air inside the elastic airbag is squeezed into the limiting cylinder. In this way, the top plate moves downward while the movable end of the limiting cylinder moves upward. At this time, if there is no such limiting plate, the upward movement of the movable end of the limiting cylinder will limit the cabinet door, making it impossible to open the cabinet door. However, if there is such a limiting plate at this time, when the cabinet door is not opened, the limiting cylinder will only abut against the lower end of the limiting plate, and at this time the cabinet door can still be freely opened. But after opening, when the cabinet door and the limiting cylinder are misaligned, the movable end of the limiting cylinder can immediately pop out to play a role in limiting the closing of the cabinet door. In this way, the staff can freely operate the components inside the control cabinet just by stepping on the top plate, and the limiting of the cabinet door to prevent closing is carried out by the limiting cylinder.

[0008] Preferably, a visible glass window is provided on the outer surface of the cabinet door, through which the operation status of the components inside the control cabinet can be conveniently observed.

[0009] Preferably, heat dissipation fans are fixedly arranged on both sides of the upper end of the control cabinet, and heat dissipation holes are opened on both sides of the lower end of the control cabinet. The heat dissipation effect of the components inside the control cabinet can be improved by the heat dissipation fans.

[0010] Preferably, a reset spring torsion spring is arranged on the rotating shaft of the cabinet door. The reset spring torsion spring can automatically drive the cabinet door to rotate and close. As long as the cabinet door is opened, the reset spring torsion spring will store energy, and the reset spring torsion spring will have a tendency to drive the cabinet door to close.

[0011] Preferably, mounting brackets are fixedly arranged on both sides inside the control cabinet, and components can be conveniently installed through the mounting brackets.

[0012] Preferably, the inside of the elastic airbag is in mutual communication with the inside of the air inlet end of the limiting cylinder through a connecting hose.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. Every time an operator needs to operate inside the control cabinet, the operator will stand on the upper end of the top plate and cause the telescopic base to contract, squeezing the elastic airbag, so that the air inside the elastic airbag is squeezed into the limiting cylinder. After the cabinet door is opened, when the cabinet door and the limiting cylinder are misaligned, the movable end of the limiting cylinder can immediately pop out to play a role in limiting the closing of the cabinet door. In this way, the staff can freely operate the components inside the control cabinet just by stepping on the top plate, and the limiting of the cabinet door to prevent closing is carried out by the limiting cylinder, so that the staff can operate the components without hindrance.

[0015] 2. After the operation of the present utility model, the staff directly leave the top plate. In this way, the elastic airbag is no longer squeezed, and it can bounce up under its own elasticity, so that the air in the limit cylinder is pumped out. At this time, the limit cylinder can also automatically move down and reset. In this way, the movable end of the cylinder can be misaligned with the cabinet door. Under the action of the torsion spring, the cabinet door can automatically reset, so as to prevent the situation that the internal components of the control cabinet are damaged due to forgetting to close the cabinet door. In this way, the cabinet door can still play the function of automatic closing and self-locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of a self-locking variable frequency control cabinet of the present utility model;

[0017] Figure 2 is an open view of the cabinet door in a self-locking variable frequency control cabinet of the present utility model;

[0018] Figure 3 is in a self-locking variable frequency control cabinet of the present utility model Figure 2 side view;

[0019] Figure 4 is an internal structure view of the telescopic base in a self-locking variable frequency control cabinet of the present utility model;

[0020] Figure 5 is a self-locking variable frequency control cabinet of the present utility model Figure 1 magnified view at A;

[0021] Figure 6 is a self-locking variable frequency control cabinet of the present utility model Figure 3 magnified view at B.

[0022] In the figure: 1, control cabinet; 2, cabinet door; 3, bottom plate; 4, telescopic base; 5, top plate; 6, limit cylinder; 7, elastic airbag; 8, connecting hose; 9, limit plate; 10, visible glass window; 11, heat dissipation fan; 12, heat dissipation hole; 13, mounting bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-6, the present utility model provides a technical solution: a self-locking variable frequency control cabinet, including a control cabinet 1. One side of the surface of the control cabinet 1 is movably provided with a cabinet door 2 through a rotating shaft. One side of the surface of the control cabinet 1 is provided with a control mechanism for whether the cabinet door of the control cabinet 1 is closed. The control mechanism includes a bottom plate 3, a telescopic base 4, a top plate 5, a limit cylinder 6, an elastic airbag 7, and a connecting hose 8. One side of the surface of the control cabinet 1 is fixedly provided with a bottom plate 3. The middle of the upper end of the bottom plate 3 is fixedly provided with a telescopic base 4. The upper end of the telescopic base 4 is fixedly provided with a top plate 5. One side of the telescopic base 4 on the upper end of the bottom plate 3 is fixedly provided with a limit cylinder 6. The movable end of the limit cylinder 6 passes through the top plate 5 and extends to the upper end of the top plate 5. The middle of the inner side of the telescopic base 4 is fixedly provided with an elastic airbag 7. The surface of the elastic airbag 7 is fixedly provided with a connecting hose 8.

[0025] A limit plate 9 is provided at the lower end of the outer surface of the cabinet door 2. The function of this limit plate 9 is that when an operator needs to operate the components inside the control cabinet 1, the operator will stand on the upper end of the top plate 5 and cause the telescopic base 4 to contract, squeezing the elastic airbag 7, so that the air inside the elastic airbag 7 is squeezed into the limit cylinder 6. In this way, the top plate 5 moves downward while the movable end of the limit cylinder 6 moves upward. At this time, if there is no such limit plate 9, the upward movement of the movable end of the limit cylinder 6 will limit the cabinet door 2, making it impossible to open the cabinet door 2. And at this time, if there is this limit plate 9, when the cabinet door 2 is not opened, the limit cylinder 6 will only abut against the lower end of the limit plate 9, and at this time the cabinet door 2 can still be freely opened. However, after opening, when the cabinet door 2 and the limit cylinder 6 are misaligned, the movable end of the limit cylinder 6 can immediately pop out to play a role in limiting the closing of the cabinet door 2. In this way, the staff can freely operate the components inside the control cabinet 1 just by stepping on the top plate 5. The limit of the cabinet door 2 to prevent closing is carried out by the limit cylinder 6;

[0026] A visible glass window 10 is provided on the outer surface of the cabinet door 2. Through the visible glass window 10, it is convenient to observe the operation of the components inside the control cabinet 1;

[0027] Two sides of the upper end of the control cabinet 1 are both fixedly provided with heat dissipation fans 11. Two sides of the lower end of the control cabinet 1 are both provided with heat dissipation holes 12. Through the heat dissipation fans 11, the heat dissipation effect of the components inside the control cabinet 1 can be improved;

[0028] A reset spiral torsion spring is provided on the rotating shaft where the cabinet door 2 is located. Through this reset spiral torsion spring, the cabinet door 2 can be automatically driven to rotate and close. As long as the cabinet door 2 is opened, the reset spiral torsion spring will store energy, and using this reset spiral torsion spring will have a tendency to drive the cabinet door 2 to close;

[0029] Two sides inside the control cabinet 1 are both fixedly provided with mounting brackets 13. Through the mounting brackets 13, it is convenient to install components.

[0030] The interior of the elastic airbag 7 is in mutual communication with the interior of the intake end of the limit cylinder 6 through a connecting hose 8. When the elastic airbag 7 is squeezed, the air inside can be squeezed into the intake end of the limit cylinder 6 through the connecting hose 8, thereby pushing the limit cylinder 6 to extend.

[0031] Working principle: When using this device, every time a staff member needs to operate inside the control cabinet 1, the operator stands on the upper end of the top plate 5 and makes the telescopic base 4 contract, squeezing the elastic airbag 7, so that the air inside the elastic airbag 7 is squeezed into the limit cylinder 6. In this way, the top plate 5 moves downward while the movable end of the limit cylinder 6 moves upward. At this time, if there is no such limit plate 9, when the movable end of the limit cylinder 6 moves upward, it will limit the cabinet door 2, making it impossible to open the cabinet door 2. And at this time, if there is this limit plate 9, when the cabinet door 2 is not opened, the limit cylinder 6 will only abut against the lower end of the limit plate 9. At this time, the cabinet door 2 can still be freely opened. However, after opening, when the cabinet door 2 and the limit cylinder 6 are misaligned, the movable end of the limit cylinder 6 can immediately pop out to play a role in limiting the closing of the cabinet door 2. In this way, the staff member can freely operate the components inside the control cabinet 1 just by stepping on the top plate 5. The limit of the cabinet door 2 to prevent closing is carried out by the limit cylinder 6, so that the staff member can operate the components without hindrance;

[0032] After the operation is completed, the staff member directly leaves the top plate 5. In this way, the elastic airbag 7 is no longer squeezed and can bounce up under its own elasticity, so that the air in the limit cylinder 6 is pumped out. At this time, the limit cylinder 6 can also automatically move downward to reset. In this way, the movable end of the cylinder can be misaligned with the cabinet door 2. In this way, under the action of the torsion spring, the cabinet door 2 can automatically reset to prevent the situation that the cabinet door 2 is forgotten to be closed and the components inside the control cabinet 1 are damaged. In this way, the cabinet door 2 can still play the function of automatic closing and self-locking.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A self-locking variable frequency control cabinet, comprising a control cabinet (1), characterized in that: A cabinet door (2) is movably provided on one side of the surface of the control cabinet (1) via a rotating shaft. A control mechanism for controlling whether the cabinet door (1) is closed is provided on one side of the surface of the control cabinet (1). The control mechanism comprises a bottom plate (3), a telescopic base (4), a top plate (5), a limit cylinder (6), an elastic air bag (7), and a connecting hose (8). A bottom plate (3) is fixedly provided on one side of the surface of the control cabinet (1). A telescopic base (4) is fixedly provided on the middle of the upper end of the bottom plate (3). A top plate (5) is fixedly provided on the upper end of the telescopic base (4). A limit cylinder (6) is fixedly provided on the upper end of the bottom plate (3) on one side of the telescopic base (4). The movable end of the limit cylinder (6) passes through the top plate (5) and extends to the upper end of the top plate (5). An elastic air bag (7) is fixedly provided on the middle of the inner side of the telescopic base (4). A connecting hose (8) is fixedly provided on the surface of the elastic air bag (7).

2. A self-locking frequency conversion control cabinet according to claim 1, characterized in that: A limiting plate (9) is provided at the lower end of the outer surface of the cabinet door (2).

3. A self-locking frequency conversion control cabinet according to claim 1, characterized in that: The outer surface of the cabinet door (2) is provided with a visual glass window (10).

4. A self-locking frequency conversion control cabinet according to claim 1, characterized in that: Heat dissipation fans (11) are fixedly arranged on both sides of the upper end of the control cabinet (1), and heat dissipation holes (12) are opened on both sides of the lower end of the control cabinet (1).

5. The self-locking frequency conversion control cabinet according to claim 1 is characterized in that: The rotating shaft where the cabinet door (2) is located is provided with a reset spring torsion spring.

6. A self-locking frequency conversion control cabinet according to claim 1, characterized in that: Mounting frames (13) are fixedly arranged on both sides of the control cabinet (1).

7. The self-locking frequency conversion control cabinet according to claim 1 is characterized in that: The interior of the elastic airbag (7) is connected to the interior of the air inlet end of the limit cylinder (6) via a connecting hose (8).

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