Highly reliable and safe electric control cabinet door limiter and electric control cabinet

Abstract

The utility model provides a kind of high reliable safety electric control cabinet door stopper and electric control cabinet, including fixed frame, moving rod, connecting piece, the fixed arm that can be connected with door plate muscle;The fixed frame is the structure of "L", and is connected with the one end of moving rod by pin shaft;The fixed arm is equipped with strip chute along its length direction, the protruding portion is formed in the one end of fixed arm, strip chute extends to protruding portion and forms circular clamping groove, the other end of moving rod is connected with fixed arm by connecting piece through strip chute, the fixed arm can be connected with the door plate muscle of door plate;Sliding member, elastic member, fixed part are also installed on the connecting piece, sliding in strip chute by sliding member, drive door plate opening and closing;The utility model has reliable safety, low cost, structural strength stable, corrosion resistant vibration resistant, installation, dismounting simple and the advantage of batch production.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrical equipment in the wind power industry, and particularly relates to a highly reliable and safe electrical control cabinet door limiter and electrical control cabinet. Background Technology

[0002] Currently, wind power operation and maintenance (O&M) involves harsh working conditions, high technical difficulty, and hazardous operations, classifying it as a high-risk industry. During wind power O&M, in case of an emergency, escape routes must be kept unobstructed.

[0003] Chinese Patent Publication No. CN210828747U discloses a skid-mounted, electrically integrated high-strength safety door limiter. Its key technical features are as follows: This skid-mounted, electrically integrated high-strength safety door limiter uses a positioning pin to connect the movable arm and the stationary arm in series. The stationary arm is fixed to the lower part of the safety door, and the movable arm is fixed to the safety door frame. When the safety door is opened, the pin connects the movable arm and slides within the groove of the stationary arm. When the safety door is opened to its maximum angle, the pin automatically slides into the positioning slot of the stationary arm's groove to achieve a locking function. This limiter features good structural strength, high versatility and standardization, simple installation and construction, and high interchangeability. It can be mass-produced according to the specifications of modular skid bodies, improving work efficiency.

[0004] Chinese Patent No. CN215169005U discloses a door limiter for server racks. Its key technical features are: the opening and closing angle of the movable door is controlled by the engagement of the insert and the limiting hole, and the engagement is achieved by gravity. During adjustment, the movable door can be rotated simply by vertically lifting the positioning part, which is convenient for operation. It is made of stainless steel and electroplated with zinc to improve the service life of the door limiter.

[0005] The above solution addresses functions such as door limit locking and door opening / closing angle control for the electrical control cabinet. However, due to the "involution" in the wind power industry and the need to control overall machine costs, the limit switches used for electrical control cabinet doors have become low-end. During operation, the limit switch needs to be pulled up, which is cumbersome and often results in the limit switch structure getting stuck, causing the cabinet door to obstruct fire escape routes and wasting precious escape time. Utility Model Content

[0006] To meet the requirements of rapid closure of the electrical control cabinet door for effective escape in emergency situations during wind power operation and maintenance, and to provide a highly reliable and safe electrical control cabinet door limiter and electrical control cabinet with low cost, stable structural strength, corrosion and vibration resistance, simple installation and disassembly, and mass production capability, this utility model provides a highly reliable and safe electrical control cabinet door limiter and electrical control cabinet. The device can control the opening and closing angle of the cabinet door, and the end of the stroke relies on the spring force to achieve the locking and limiting function. When the cabinet door is closed, there is no need to lift the limiter to operate, which not only ensures the opening and closing angle and limiting function of the cabinet door, but also solves the safe use requirements of rapid opening and closing of the electrical control cabinet door in operation and maintenance.

[0007] The technical problem solved by this utility model is achieved through the following technical solution: A highly reliable and safe door limiter for an electrical control cabinet includes a fixed frame, a moving rod, a connector, and a fixed arm. The fixed frame has an "L"-shaped structure and is connected to one end of the moving rod via a pin. The fixed arm has a strip-shaped groove along its length, and one end of the fixed arm forms a protrusion. The strip-shaped groove extends to the protrusion and forms a circular slot. The other end of the moving rod passes through the strip-shaped groove and is connected to the fixed arm via the connector. The fixed arm can be connected to the door panel reinforcement of the door panel. The connector is also equipped with a sliding component, an elastic component, and a fixing component. The sliding component slides within the strip groove, thereby driving the door panel to open and close.

[0008] Furthermore, the slider includes an end, a ramp, and a sliding part from top to bottom. The diameter of the strip groove of the fixed arm is smaller than the diameter of the middle part of the ramp of the slider and larger than the diameter of the sliding part of the slider.

[0009] Furthermore, the groove diameter of the fixed arm is smaller than the end diameter of the slider and larger than the middle diameter of the inclined platform of the slider, so as to limit the slider in the groove.

[0010] Furthermore, the elastic element is a spring, the fixing element is fixedly installed on the connecting element, the spring is located between the sliding element and the fixing element, and the sliding element is limited by the spring in the direction of the connecting element.

[0011] Furthermore, the fixed arm is provided with a fixed arm mounting hole, and the fixed arm is connected to the door panel rib on the door panel through the fixed arm mounting hole.

[0012] Furthermore, the fixing frame is provided with fixing frame mounting holes, and the fixing frame is connected to the frame through the fixing frame mounting holes.

[0013] Furthermore, both ends of the motion rod are provided with motion rod mounting holes.

[0014] Furthermore, when the door panel is opened, the moving rod rotates around the pin, while the sliding member slides in the strip groove. When the sliding member enters the protrusion of the fixed arm, the elastic member begins to compress to provide spring force until the sliding member slides into the slot.

[0015] Furthermore, when the door is closed, only a thrust is applied to the cabinet door along the hinge rotation direction to overcome the frictional force generated by the spring force, causing the elastic element to slide out of the protrusion of the fixed arm, and the spring force provided by the elastic element disappears.

[0016] An electrical control cabinet includes a highly reliable and safe electrical control cabinet door limiter as described above.

[0017] Compared with the above-mentioned background technology, the present invention has at least the following beneficial effects: This utility model provides a highly reliable and safe door limiter for electrical control cabinets. A fixed frame is connected to a moving rod via a pin and installed onto the frame. A fixed arm is connected to the moving rod via a connector and installed onto the door panel rib. When the cabinet door is opened, the sliding component moves within the groove of the fixed arm. The elasticity of the elastic component and the protruding structure of the fixed arm limit the sliding component to a circular slot, achieving a locking function. When the cabinet door is closed, a quick closing function is achieved without lifting the limiter. This limiter has the advantages of reliability, safety, low cost, stable structural strength, corrosion and vibration resistance, simple installation and disassembly, and mass production capability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a highly reliable and safe electrical control cabinet door limiter and electrical control cabinet provided in this embodiment of the utility model; Figure 2 This is an exploded view of a highly reliable and safe electrical control cabinet door limiter and electrical control cabinet provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of a highly reliable and safe electrical control cabinet door limiter and electrical control cabinet installation structure provided by an embodiment of this utility model; Figure 4 This is a schematic diagram of a highly reliable and safe electrical control cabinet door limiter and electrical control cabinet installation structure provided by an embodiment of this utility model; Figure 5 yes Figure 2 Enlarged diagram of section A in the middle; Figure label: 1. Fixing frame; 101. First fixing frame mounting hole; 102. Second fixing frame mounting hole; 2. Moving rod; 201. First moving rod mounting hole; 202. Second moving rod mounting hole; 3. Pin; 4. Connector; 5. Fixing arm; 501. Fixing arm mounting hole; 502. Slide groove; 503. Slot; 504. Protrusion; 6. Sliding component; 601. End; 602. Inclined platform; 603. Sliding part; 7. Elastic component; 8. Fixing component; 9. Frame; 10. Door panel; 11. Door panel rib.

[0019] First, it should be noted that the specific structure, features, and advantages of this utility model will be described in detail below by way of examples. However, all descriptions are for illustrative purposes only and should not be construed as limiting the utility model in any way. Furthermore, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the accompanying drawings, can still be arbitrarily combined or deleted among these technical features (or their equivalents) to obtain more other embodiments of this utility model that may not be directly mentioned herein. Additionally, for the sake of simplifying the drawings, the same or similar technical features may be indicated only in one place in the same drawing.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] like Figure 1 , 2 As shown in Figures 3 and 4, this utility model provides a highly reliable and safe electrical control cabinet door limiter, which includes a fixed frame 1, a moving rod 2, a pin 3, a connecting piece 4, a fixed arm 5, a sliding piece 6, an elastic piece 7, and a fixing piece 8; the moving rod 2 is detachably connected to the fixed frame 1 and the fixed arm 5 respectively. The fixing frame 1 is provided with a first fixing frame mounting hole 101 and a second fixing frame mounting hole 102. The fixing frame 1 is connected to the frame 9 through the first fixing frame mounting hole 101. The opening and closing angle of the door panel 10 can be adjusted by changing the relative position of the fixing frame 1 and the frame 9. The moving rod 2 is provided with a first moving rod mounting hole 201 and a second moving rod mounting hole 202. The second fixing bracket mounting hole 102 of the fixing bracket 1 is connected to the first moving rod mounting hole 201 of the moving rod 2 through a pin 3 to ensure the smooth rotation of the door panel 10. The fixed arm 5 has a strip-shaped groove 502 along its length, and one end of the fixed arm 5 forms a protrusion 504. The strip-shaped groove 502 extends to the protrusion 504 and forms a circular slot 503. The fixed arm 5 is connected to the door panel rib 11 on the door panel 10 through the fixed arm mounting hole 501. Figure 5As shown, the sliding member includes an end 601, a ramp 602, and a sliding part 603. The groove diameter of the fixed arm 5 is smaller than the diameter of the middle part of the ramp 602 of the sliding member 6 and slightly larger than the diameter of the sliding part 603 of the sliding member 6. This reduces the friction generated between the components during operation, improves the service life of the device, and facilitates the pulling of the door panel 10. It enables the sliding member 6 to slide freely in the groove 502, ensuring the smoothness and stability of the sliding. The groove diameter of the fixed arm 503 is smaller than the diameter of the end 601 of the slider 6 and larger than the middle of the inclined platform 602 of the slider 6, so that the slider 6 is limited in the groove 503 and the risk of the slider getting stuck is reduced. The elastic element 7 is a spring. The connecting element 4 passes through the second moving rod mounting hole 202, the slide groove 502, the sliding element 6, the spring and the fixing element 8 in sequence on the moving rod 2. The fixing element 8 is fixedly installed on the connecting element 4. The connecting element 4 and the fixing element 8 cooperate to connect the moving rod 2 and the fixed arm 5. When the door panel 10 is opened, the moving rod 2 rotates around the pin 3, and at the same time the sliding member 6 slides in the slide groove 502. When the sliding member 6 enters the protrusion 504 of the fixed arm 5, the elastic member 7 begins to provide spring force, and the spring force is always present when the sliding member 6 slides into the slot 503, thus achieving the limiting effect of the door panel 10. When the door panel 10 is closed, only a thrust is applied to the cabinet door along the hinge rotation direction to overcome the friction generated by the spring force, so that the elastic element 7 slides out of the protrusion 504 of the fixed arm 5, the spring force provided by the elastic element 7 disappears, and the door panel 10 is quickly closed, which is convenient to operate and improves work efficiency and reliability and safety.

[0023] The above embodiments have provided a detailed description of the present invention, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A highly reliable and safe door limiter for an electrical control cabinet, characterized in that: The limiter includes a fixed frame (1), a moving rod (2), a connector (4), and a fixed arm (5); the fixed frame (1) has an "L" shaped structure and is connected to one end of the moving rod (2) by a pin (3); the fixed arm (5) has a strip groove (502) along its length direction, and one end of the fixed arm (5) forms a protrusion (504), the strip groove (502) extends to the protrusion (504) and forms a circular slot (503), the other end of the moving rod (2) passes through the strip groove (502) and is connected to the fixed arm (5) by the connector (4), and the fixed arm (5) can be connected to the door panel rib (11) of the door panel; The connector (4) is also equipped with a sliding member (6), an elastic member (7), and a fixing member (8). The sliding member (6) slides in the strip groove (502) to drive the door panel to open and close.

2. The highly reliable and safe electrical control cabinet door limiter according to claim 1, characterized in that: The sliding member includes an end (601), a ramp (602), and a sliding part (603) from top to bottom. The groove diameter of the strip groove (502) of the fixed arm (5) is smaller than the diameter of the middle part of the ramp (602) of the sliding member (6) and larger than the diameter of the sliding part (603) of the sliding member (6).

3. The highly reliable and safe electrical control cabinet door limiter according to claim 2, characterized in that: The groove diameter of the fixed arm (5) is smaller than the end diameter (601) of the slider (6) and larger than the middle diameter of the inclined platform (602) of the slider (6), so as to limit the slider (6) in the groove (503).

4. The highly reliable and safe electrical control cabinet door limiter according to claim 1, characterized in that: The elastic element (7) is a spring, the fixing element (8) is fixedly installed on the connecting element (4), the spring is located between the sliding element (6) and the fixing element (8), and the sliding element (6) is limited by the spring in the direction of the connecting element (4).

5. A highly reliable and safe electrical control cabinet door limiter according to claim 1, characterized in that: The fixed arm (5) is provided with a fixed arm mounting hole (501), and the fixed arm (5) is connected to the door panel rib (11) on the door panel (10) through the fixed arm mounting hole (501).

6. The highly reliable and safe electrical control cabinet door limiter according to claim 1, characterized in that: The fixing frame (1) is provided with fixing frame mounting holes, and the fixing frame (1) is connected to the frame (9) through the fixing frame mounting holes.

7. A highly reliable and safe electrical control cabinet door limiter according to claim 1, characterized in that: Both ends of the motion rod (2) are provided with motion rod mounting holes.

8. A highly reliable and safe electrical control cabinet door limiter according to claim 3, characterized in that: When the door panel (10) is opened, the moving rod (2) rotates around the pin (3), and at the same time the sliding member (6) slides in the strip groove (502). When the sliding member (6) enters the protrusion (504) of the fixed arm (5), the elastic member (7) begins to compress to provide spring force until the sliding member (6) slides into the slot (503).

9. A highly reliable and safe electrical control cabinet door limiter according to claim 3, characterized in that: When the door panel (10) is closed, only a thrust is applied to the cabinet door along the hinge rotation direction to overcome the friction generated by the spring force, so that the elastic element (7) slides out of the protrusion (504) of the fixed arm (5), and the spring force provided by the elastic element (7) disappears.

10. An electrical control cabinet, characterized in that: Including a highly reliable and safe electrical control cabinet door limiter as described in any one of claims 1-9.

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