Locking device for rear door of high-voltage switch cabinet

Abstract

The utility model discloses a rear door locking device of a high-voltage switch cabinet, and belongs to the technical field of high-voltage electric appliances. The device comprises an upper hanging plate, a lower collision plate and a locking mechanism, the upper hanging plate is mounted on a rear upper cover plate of the high-voltage switch cabinet, the lower collision plate is mounted on a rear lower cabinet door of the high-voltage switch cabinet, and the locking mechanism is arranged between the upper hanging plate and the lower collision plate; the locking mechanism comprises a U-shaped sliding rod, a tension spring and a guide plate; the U-shaped sliding rod penetrates through the interior of the guide plate, and a tension spring is arranged between the guide plate and the U-shaped sliding rod; one end of the U-shaped sliding rod is connected with the upper hanging plate; and the other end of the U-shaped sliding rod is connected with the lower collision plate. According to the utility model, the high-voltage switch cabinet has an anti-misoperation operation function, and equipment is ensured to automatically judge and prompt a correct operation sequence in an operation process, so that safety accidents caused by misoperation are effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage electrical appliances, and in particular relates to a rear door locking device for a high-voltage switch cabinet. Background Art

[0002] In the power system, high-voltage switchgear, as a key power distribution equipment, is widely used in power plants, substations and various industrial and mining enterprises. Its main function is to receive and distribute electric energy, and to accurately control, protect and monitor the circuit to ensure the stable operation of the power system. Especially in places such as steelmaking where frequent operations are required, the stability and safety of high-voltage switchgear are particularly important.

[0003] High-voltage switchgear is usually composed of multiple parts, among which the rear cabinet is one of its important components. The structural design of the rear cabinet directly affects the operating efficiency and operational safety of the equipment. Generally speaking, the rear cabinet of the high-voltage switchgear is divided into two parts, the upper part has a rear upper cover plate, and the lower part has a rear lower cabinet door. This design makes the rear cabinet more compact in structure and also facilitates the maintenance and management of the equipment.

[0004] However, since the rear cabinet is connected from top to bottom and both are high-voltage live parts, a certain operating sequence must be strictly followed when closing the rear door to ensure the safety of the operator. Specifically, the upper rear cover should be closed first, and then the lower rear cabinet door. This is because if the lower rear cabinet door is closed first, the live parts on the upper part may be exposed due to improper operation, thereby increasing the risk of electric shock. However, the rear cabinet structure of the existing high-voltage switchgear does not have an "anti-misoperation" operation function. It is impossible to automatically judge and prompt the correct operating sequence during operation, resulting in safety accidents caused by operating errors. Utility Model Content

[0005] In view of the problem that the rear cabinet structure of the high-voltage switch cabinet in the prior art does not have an "anti-misoperation" function and cannot automatically judge and prompt the correct operation sequence during operation, thereby causing safety accidents due to operating errors, the utility model provides a high-voltage switch cabinet rear door locking device, which is installed in the high-voltage switch cabinet, so that the high-voltage switch cabinet has an "anti-misoperation" function, ensuring that the equipment automatically judges and prompts the correct operation sequence during operation, thereby effectively preventing the occurrence of safety accidents due to operating errors.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0007] A locking device for a rear door of a high-voltage switch cabinet comprises an upper hanging plate, a lower impact plate and a locking mechanism; the upper hanging plate is mounted on the rear upper cover plate of the high-voltage switch cabinet, the lower impact plate is mounted on the rear lower cabinet door of the high-voltage switch cabinet, and the locking mechanism is arranged between the upper hanging plate and the lower impact plate; the locking mechanism comprises a U-shaped sliding bar, a tension spring and a guide plate; the U-shaped sliding bar passes through the interior of the guide plate, and a tension spring is arranged between the guide plate and the U-shaped sliding bar; one end of the U-shaped sliding bar is connected to the upper hanging plate; the other end of the U-shaped sliding bar is connected to the lower impact plate.

[0008] Furthermore, the locking mechanism also includes a lower roller; the lower roller is arranged at the lower part of the U-shaped sliding rod.

[0009] Furthermore, an upper bumper rod and a lower bumper rod are arranged on the guide plate; the upper bumper rod and the lower bumper rod are arranged opposite to each other; the U-shaped sliding rod passes through the upper bumper rod and the lower bumper rod; one end of the tension spring is connected to the U-shaped sliding rod, and the other end of the tension spring is connected to the upper bumper rod.

[0010] Furthermore, the U-shaped sliding rod is provided with a first notch, and the upper hanging plate is connected to the U-shaped sliding rod through the first notch.

[0011] Furthermore, the U-shaped sliding bar is provided with a second notch, and the lower impact plate is connected to the U-shaped sliding bar through the second notch.

[0012] Furthermore, it also includes a positioning rod; the positioning rod fixes the rear upper cover plate on the high-voltage switch cabinet.

[0013] Furthermore, the positioning rod includes a first positioning rod and a second positioning rod; the first positioning rod fixes one end of the rear upper cover plate on the high-voltage switch cabinet; the second positioning rod fixes the other end of the rear upper cover plate on the high-voltage switch cabinet.

[0014] Furthermore, the positioning rod is conical in shape.

[0015] Furthermore, the upper hanging plate is in a "Z" shape.

[0016] Furthermore, the lower impact plate is wedge-shaped.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model discloses a rear door locking device for a high-voltage switch cabinet, which can automatically determine and prompt the correct operation sequence during the operation of the high-voltage switch cabinet. This greatly reduces the risk of safety accidents caused by operating errors and significantly improves the safety of operation. Through an effective locking mechanism, the equipment can be protected in an abnormal working state, avoiding equipment damage or failure caused by misoperation. This prolongs the service life of the equipment and reduces the cost of maintenance and replacement. Since the locking device can automatically determine the operation sequence, the operator does not need to spend extra time and energy to confirm the operation steps, thereby improving work efficiency. For the operator, this design makes the operation process simpler and clearer, reduces the troubles and errors caused by complex operations, and the design of the device helps the high-voltage switch cabinet meet relevant safety standards and regulations, and improves the compliance of the equipment. Therefore, the utility model enables the high-voltage switch cabinet to have an "anti-misoperation" operation function, ensuring that the equipment automatically determines and prompts the correct operation sequence during operation, thereby effectively preventing the occurrence of safety accidents caused by operating errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are for explanation purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings:

[0020] Figure 1 The utility model is a schematic diagram of a rear door locking device for a high-voltage switch cabinet; wherein (a) is a schematic diagram of the position of the rear door locking device of the high-voltage switch cabinet installed in the high-voltage switch cabinet; (b) is Figure 1 (a) is a schematic diagram of part III; (c) is Figure 1 (b) Schematic diagram of the positioning rod installation;

[0021] Figure 2 The utility model is a high-voltage switch cabinet rear door locking device Figure 1 Installation details of the center positioning rod;

[0022] Figure 3 This is a structural principle diagram of a rear door locking device for a high-voltage switch cabinet according to the utility model; wherein (a) is Figure 1 Detailed schematic diagram of part III; (b) Figure 3 (a) Schematic diagram of local details;

[0023] Figure 4 The utility model is a schematic diagram of the installation of a U-shaped sliding bar, a lower roller and an upper contact rod of a rear door locking device of a high-voltage switch cabinet.

[0024] In the figure: 1 is the rear upper cover plate; 2 is the upper hanging plate; 31 is the upper bumper rod; 32 is the lower bumper rod; 4 is the U-shaped sliding rod; 5 is the tension spring; 6 is the guide plate; 7 is the lower roller; 8 is the lower bumper plate; 9 is the rear lower cabinet door; 10 is the hinge; 11 is the positioning rod; 111 is the first positioning rod; 112 is the second positioning rod; 12 is the door lock; 21 is the first notch; 20 is the second notch. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be described clearly and completely below in conjunction with the drawings of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] In view of the problem that the rear cabinet structure of the high-voltage switch cabinet in the prior art does not have an "anti-misoperation" function and cannot automatically judge and prompt the correct operation sequence during operation, thereby causing safety accidents due to operational errors, the utility model provides a rear door locking device for a high-voltage switch cabinet.

[0029] like Figure 1 As shown, a rear door locking device of a high-voltage switch cabinet of the utility model comprises an upper hanging plate 2, a lower striker plate 8 and a locking mechanism.

[0030] The upper hanging plate 2 is installed on the rear upper cover plate 1 of the high-voltage switch cabinet, the lower impact plate 8 is installed on the rear lower cabinet door 9 of the high-voltage switch cabinet, and the locking mechanism is arranged between the upper hanging plate 2 and the lower impact plate 8.

[0031] like Figure 2As shown, the rear upper cover plate 1 is aligned with the cabinet body of the high-voltage switch cabinet and installed through the positioning rod 11, and the positioning rod 11 includes a first positioning rod 111 and a second positioning rod 112. Figure 1 As shown in (c), the first positioning rod 111 and the second positioning rod 112 are respectively arranged at two ends of the rear upper cover plate 1.

[0032] The first positioning rod 111 and the second positioning rod 112 are conical, the upper hanging plate 2 is in a Z shape, a part of the upper hanging plate 2 is connected to the rear upper cover plate 1 of the high-voltage switch cabinet, and the other part of the upper hanging plate 2 is connected to the locking device. The lower striker plate 8 is in a wedge shape, which is convenient for installing the lower roller 7. The positioning rod 11 cooperates with the cabinet body of the high-voltage switch cabinet, and the upper hanging plate 2, the lower striker plate 8 and the locking mechanism cooperate to form a locking between the rear upper cover plate 1 and the rear lower cabinet door 9.

[0033] like Figure 3 As shown, the locking mechanism includes a U-shaped sliding rod 4, a tension spring 5, a guide plate 6 and a lower roller 7.

[0034] The U-shaped slide bar 4 is located inside the guide plate 6, an upper bumper bar 31 is installed above the guide plate 6, a lower bumper bar 32 is installed below the guide bar 6, holes are set on the upper bumper bar 31 and the lower bumper bar 32, the U-shaped slide bar 4 passes through the holes set on the upper bumper bar 31 and the lower bumper bar 32, a tension spring 5 is set between the guide plate 6 and the U-shaped slide bar 4, one end of the tension spring 5 is on the U-shaped slide bar 4 inside the guide bar 6, and the other end of the tension spring 5 is installed on the upper bumper bar 31, and a lower roller 7 is set at the lower part of the U-shaped slide bar 4.

[0035] The U-shaped slide bar 4 can slide up and down in the guide plate 6 through the pulley 7. Under the action of the tension spring 5, the U-shaped slide bar 4 can automatically reset. Figure 4 As shown, a first notch 21 is provided above the U-shaped slide bar 4 , and a second notch 20 is provided below the U-shaped slide bar 4 .

[0036] The rear upper cover plate 1 of the utility model must be in a completely closed state to realize the closing operation of the rear lower cabinet door. If the rear upper cover plate 1 is not closed, the rear lower cabinet door 9 cannot be closed.

[0037] The first positioning rod 111 and the second positioning rod 112 are respectively installed on the left and right sides of the high-voltage switch cabinet. The first positioning rod 11 and the second positioning rod 112 are processed into a cone shape. The cone design makes it easier to achieve accurate positioning of the positioning rod 11 when inserting or docking. Its gradual shape can guide the positioning process and ensure that the positioning rod 11 can be accurately inserted into the predetermined position; the operator can more easily insert the positioning rod 11 into the predetermined position without complicated adjustment or calibration. The upper hanging plate 2 is bent into a "Z" shape and installed under the rear upper cover plate 1, just above the locking mechanism. The lower impact plate 8 is designed to be wedge-shaped and installed on the rear lower cabinet door plate 9. The upper and lower areas of the U-shaped slide bar 4 in the locking mechanism are respectively provided with a first notch 21 and a second notch 20. The lower roller 7 is installed below the U-shaped slide bar 4. The U-shaped slide bar 4 slides up and down in the guide plate 6 and automatically resets under the action of the tension spring 5. The first notch 21 allows the upper hanging plate 2 to pass through, and the second notch 20 allows the lower impact plate 8 to pass through.

[0038] The utility model discloses a rear door locking device for a high-voltage switch cabinet. The rear upper cover plate 1 must be in a completely closed state before the rear lower cabinet door 9 can be closed. If the rear lower cabinet door 9 is closed first, the rear upper cover plate 1 will not be closed. The high-voltage switch cabinet has an "anti-misoperation" function, ensuring that the device automatically judges and prompts the correct operation sequence during operation, thereby effectively preventing the occurrence of safety accidents caused by operating errors and ensuring the safety of the staff.

[0039] The present invention is further explained below in conjunction with specific embodiments.

[0040] Example

[0041] During power outage maintenance, Figure 1 The middle rear upper cover plate 1 is in a disassembled state, and the rear lower cabinet door 9 is in an open state. Figure 3 The U-shaped slide bar 4 in the middle locking mechanism is at the uppermost end under the action of the tension spring 5. The size and position of the first notch 21 of the U-shaped slide bar 4 can ensure that the upper hanging plate 2 can pass freely. The size and position of the second lower notch 20 can ensure that the lower collision plate 8 can pass freely.

[0042] When power is supplied, Figure 2 As shown, the hole of the rear upper cover plate 1 is aligned with the positioning rod 11 installed on the cabinet body of the high-voltage switch cabinet. The end of the positioning rod 11 is designed to be conical. After the rear upper cover plate 1 is installed, it will automatically guide. Figure 3 As shown, the upper hanging plate 2 installed on the rear upper cover plate 1 freely passes through the first notch 21 of the U-shaped slide bar 4. The rear lower cabinet door 9 is closed, and the lower striker 8 installed on the rear lower cabinet door 9 is designed to be wedge-shaped. When it passes through the second notch 20 under the U-shaped slide bar 4, it pulls down the U-shaped slide bar 4, and the U-shaped slide bar 4 locks the upper hanging plate 2. At this time, if the rear lower cabinet door 9 is not opened, the rear upper cover plate 1 cannot be opened either. The locking between the upper and lower doors is completed.

[0043] Similarly, if the rear lower cabinet door 9 is closed first, and the lower striker 8 on the rear lower door 9 is installed, it will pull down the U-shaped slide bar 4 when passing through the second notch 20 under the U-shaped slide bar 4. At this time, the rear upper cover 1 is closed again, and the end of the upper hanging plate 2 installed on the rear upper cover 1 contacts the upper striker 4, and the rear upper cover 1 cannot be closed.

[0044] Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of such subject matter, nor should it be considered that the applicant has not considered such subject matter to be part of the disclosed utility model subject matter.

[0045] The above content is a further detailed description of the utility model. It cannot be determined that the specific implementation methods of the utility model are limited to these. For ordinary technicians in the technical field to which the utility model belongs, they can make some simple deductions or substitutions without departing from the concept of the utility model, which should be regarded as belonging to the protection scope of the utility model determined by the submitted claims.

Claims

1. A rear door locking device for a high voltage switch cabinet, characterized in that: It comprises an upper hanging plate (2), a lower striking plate (8) and a locking mechanism; The upper hanging plate (2) is mounted on the rear upper cover plate (1) of the high-voltage switch cabinet, the lower impact plate (8) is mounted on the rear lower cabinet door (9) of the high-voltage switch cabinet, and the locking mechanism is arranged between the upper hanging plate (2) and the lower impact plate (8); The locking mechanism comprises a U-shaped sliding rod (4), a tension spring (5) and a guide plate (6); The U-shaped sliding rod (4) passes through the interior of the guide plate (6), and a tension spring (5) is provided between the guide plate (6) and the U-shaped sliding rod (4); One end of the U-shaped sliding rod (4) is connected to the upper hanging plate (2); The other end of the U-shaped sliding rod (4) is connected to the lower impact plate (8).

2. A high-voltage switch cabinet rear door locking device according to claim 1, characterized in that: The locking mechanism further comprises a lower roller (7); The lower roller (7) is arranged at the lower part of the U-shaped sliding rod (4).

3. A high-voltage switch cabinet rear door locking device according to claim 1, characterized in that: An upper bumper rod (31) and a lower bumper rod (32) are provided on the guide plate (6); The upper bumper bar (31) and the lower bumper bar (32) are arranged opposite to each other; The U-shaped sliding rod (4) passes through the upper bumper rod (31) and the lower bumper rod (32); One end of the tension spring (5) is connected to the U-shaped sliding rod (4), and the other end of the tension spring (5) is connected to the upper contact rod (31).

4. A high-voltage switch cabinet rear door locking device according to claim 1, characterized in that: The U-shaped sliding rod (4) is provided with a first notch (21), and the upper hanging plate (2) is connected to the U-shaped sliding rod (4) via the first notch (21).

5. A high-voltage switch cabinet rear door locking device according to claim 1, characterized in that: The U-shaped sliding bar (4) is provided with a second notch (20), and the lower collision plate (8) is connected to the U-shaped sliding bar (4) via the second notch (20).

6. A high-voltage switch cabinet rear door locking device according to claim 1, characterized in that: Also includes a positioning rod (11); The positioning rod (11) fixes the rear upper cover plate (1) on the high-voltage switch cabinet.

7. A high-voltage switch cabinet rear door locking device according to claim 6, characterized in that: The positioning rod (11) comprises a first positioning rod (111) and a second positioning rod (112); The first positioning rod (111) fixes one end of the rear upper cover plate (1) on the high-voltage switch cabinet; The second positioning rod (112) fixes the other end of the rear upper cover plate (1) on the high-voltage switch cabinet.

8. A high-voltage switch cabinet rear door locking device according to claim 6, characterized in that: The positioning rod (11) is in a conical shape.

9. A high-voltage switch cabinet rear door locking device according to claim 1, characterized in that: The upper hanging plate (2) is in a "Z" shape.

10. A high-voltage switch cabinet rear door locking device according to claim 1, characterized in that: The lower impact plate (8) is in a wedge shape.

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