Combined high-low voltage switch cabinet shell convenient to disassemble and assemble
By locking components and incorporating ventilation and heat dissipation designs, the problem of difficult-to-disassemble high and low voltage switchgear housings has been solved, achieving rapid disassembly and assembly as well as improved internal cleanliness and heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PINGDINGSHAN HANSHENG ELECTRIC CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-12
AI Technical Summary
The existing high and low voltage switchgear enclosures are difficult to disassemble and install quickly during maintenance and repair, which affects maintenance efficiency.
The locking assembly, which uses locking rods, springs, blocks, and slots, combined with handles and inserts, enables quick disassembly and installation of the side shells. It also improves the cleanliness and air exchange rate inside the cabinet through ventilation and cooling fans.
It enables quick assembly and disassembly of high and low voltage switchgear housings, improving maintenance efficiency. Dust filters and drying nets ensure internal cleanliness, while cooling fans increase air exchange rate and enhance heat dissipation.
Smart Images

Figure CN224233170U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of modular high and low voltage switchgear, specifically a modular high and low voltage switchgear housing that is easy to assemble and disassemble. Background Technology
[0002] High and low voltage control cabinets are modular high and low voltage switchgear assembled using standard modular components. These control cabinets are suitable for AC 50-60HZ power supply systems with a rated operating voltage of 660V and below. They are used for the control of power generation, transmission, distribution, power conversion, and power consumption equipment. During use, high and low voltage switchgear requires frequent inspection and maintenance, necessitating a modular high and low voltage switchgear enclosure that is easy to disassemble and assemble.
[0003] The existing patent, CN221633164U, entitled "A Combined High and Low Voltage Switchgear for Transformers," relates to the field of switchgear technology and discloses a combined high and low voltage switchgear for transformers. It includes two protective plates, each with two connecting plates fixedly connected to one side facing each other. Two top plates are also provided on one side of the two protective plates, each with a sliding groove on its left and right sides. Multiple connecting plates on the left and right sides are slidably connected within these grooves. Two side plates are also provided on one side of the two protective plates, each with a connecting plate fixedly connected to one side on its left and right sides. Sliding grooves are also provided on the front and rear sides of the two protective plates, with multiple connecting plates on the left and right sides slidably connected within these grooves. In this utility model, the cooperation of the two protective plates, two top plates, and two side plates facilitates disassembly and assembly, simplifying the maintenance process when the transformer needs maintenance or upgrading.
[0004] The aforementioned device, through the cooperation of two protective plates, two top plates, and two side plates, makes the maintenance process simpler by facilitating disassembly and assembly when the transformer needs maintenance or upgrading. However, in actual maintenance, it is not necessary to disassemble the entire unit; most maintenance and repairs can be completed by removing the side plates of the cabinet. This does not adequately meet people's usage needs. In response to the above situation, technical innovations are being made based on the existing switchgear housing. Utility Model Content
[0005] The purpose of this utility model is to provide a modular high and low voltage switchgear housing that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a modular high and low voltage switch cabinet housing that is easy to assemble and disassemble, comprising a side shell and a cabinet body. A locking component is installed inside the upper side of the side shell. The cabinet body is installed on the right side of the side shell, and an L-shaped groove is installed inside the side wall of the cabinet body. An insert is installed inside the side wall of the side shell, and the insert is welded to the side shell.
[0007] Furthermore, the locking assembly includes a locking rod and a spring, and the spring is installed around the locking rod. The spring applies a rightward pushing force to the locking rod to ensure that the locking rod is stably inserted into the cabinet.
[0008] Furthermore, the locking assembly also includes a locking block and a locking groove. A locking block is provided on the right side of the spring, and a locking groove is installed around the locking block. When the locking rod is pulled outward and rotated, the locking block disengages from the locking groove and rotates into the circular groove where the spring is located, thus unlocking the locking rod from the cabinet.
[0009] Furthermore, a handle is installed on the left side of the side shell, and the handle is welded to the side shell, making it easy to operate and move the side shell.
[0010] Furthermore, an air exchange fan is installed on the upper interior of the side shell, and the air exchange fan is embedded in the side shell.
[0011] Furthermore, a dust filter is installed on the left side of the ventilation fan, and a drying screen is installed on the right side of the ventilation fan. The ventilation fan draws air into the cabinet, and the air is filtered by the dust filter and the drying screen to remove dust and moisture, ensuring the cleanliness of the cabinet interior.
[0012] Furthermore, a cooling fan is installed inside the lower part of the side shell, and a heat dissipation vent is installed on the left side of the cooling fan. The cooling fan exhausts the air inside the cabinet through the heat dissipation vent, thereby increasing the air exchange rate in the cabinet.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: when the locking rod is pulled outward and rotated, the locking block disengages from the slot and rotates into the circular groove where the spring is located, thus unlocking the locking rod from the cabinet. By lifting the side shell with the handle and pulling it outward, the insert can be slid out of the L-groove, and the side shell can be removed from the cabinet. The reverse operation allows for quick installation. The spring applies a rightward pushing force to the locking rod, ensuring that the locking rod is stably inserted into the cabinet. The ventilation fan introduces air into the cabinet, and the air is filtered through the dust filter and drying screen to remove dust and moisture, ensuring the cleanliness of the cabinet interior. The cooling fan exhausts the air inside the cabinet through the vents, improving the air exchange rate in the cabinet and resulting in better heat dissipation.
[0014] 1. In this utility model, the locking rod is pulled outward and rotated, and the locking block disengages from the slot and rotates into the circular groove where the spring is located. The locking rod is unlocked from the cabinet. By lifting the side shell with the handle and pulling it outward, the insert can be slid out of the L-groove, and the side shell can be removed from the cabinet. The reverse operation can be used for quick installation. The spring applies a rightward pushing force to the locking rod to ensure that the locking rod is stably inserted into the cabinet.
[0015] 2. This utility model's ventilation fan introduces air into the cabinet, and the air is filtered through a dust filter and a drying filter to remove dust and moisture, ensuring the cleanliness of the cabinet interior. The cooling fan then exhausts the air from the cabinet interior through the vents, increasing the air exchange rate within the cabinet and improving the heat dissipation effect. Attached Figure Description
[0016] Figure 1 This is a front three-dimensional structural diagram of a modular high and low voltage switchgear housing that is easy to assemble and disassemble according to the present invention.
[0017] Figure 2 This is a schematic diagram of the side shell separation structure of a modular high and low voltage switchgear housing that is easy to disassemble and assemble according to this utility model.
[0018] Figure 3 This is a three-dimensional structural diagram of the inner side of the side shell of a modular high and low voltage switchgear housing that is easy to assemble and disassemble according to this utility model.
[0019] Figure 4 This is a partial cross-sectional perspective view of the locking assembly of a modular high and low voltage switchgear housing that is easy to assemble and disassemble, according to the present invention.
[0020] In the diagram: 1. Side shell; 2. Cabinet body; 3. Insert; 4. L-shaped groove; 5. Locking assembly; 501. Locking rod; 502. Spring; 503. Locking block; 504. Locking slot; 6. Dust filter; 7. Exhaust fan; 8. Drying mesh; 9. Cooling fan; 10. Vent; 11. Handle. Detailed Implementation
[0021] like Figure 1-4 As shown, a modular high and low voltage switchgear housing that is easy to assemble and disassemble includes a side shell 1 and a cabinet body 2. The side shell 1 has a locking assembly 5 installed inside its upper side. The cabinet body 2 is installed on the right side of the side shell 1, and an L-shaped groove 4 is installed inside the side wall of the cabinet body 2. An insert 3 is installed inside the side wall of the side shell 1, and the insert 3 is welded to the side shell 1. The locking assembly 5 includes a locking rod 501 and a spring 502, with the spring 502 installed around the locking rod 501. The locking assembly 5 also includes a locking block 503 and a locking groove 504. The locking block 503 is located on the right side of the spring 502. A slot 504 is installed around the outer edge of block 503, and a handle 11 is installed on the left side of side shell 1. The handle 11 is welded to side shell 1. Pull the locking rod 501 outward and rotate it, and block 503 will disengage from slot 504 and rotate into the circular groove where spring 502 is located. Locking rod 501 is unlocked from cabinet 2. By lifting side shell 1 with handle 11 and pulling it outward, the insert 3 can be slid out of L slot 4, and side shell 1 can be removed from cabinet 2. Reverse operation allows for quick installation. Spring 502 applies a rightward pushing force to locking rod 501 to ensure that locking rod 501 is stably inserted into cabinet 2.
[0022] like Figure 1-3 As shown, an exhaust fan 7 is installed inside the upper part of the side shell 1, and the exhaust fan 7 is embedded in the side shell 1. A dust filter 6 is installed on the left side of the exhaust fan 7, and a drying filter 8 is installed on the right side of the exhaust fan 7. A cooling fan 9 is installed inside the lower part of the side shell 1, and a heat dissipation vent 10 is installed on the left side of the cooling fan 9. The exhaust fan 7 introduces air into the cabinet 2. The air is filtered by the dust filter 6 and the drying filter 8 to remove dust and moisture, ensuring the cleanliness of the inside of the cabinet 2. The cooling fan 9 exhausts the air inside the cabinet 2 through the heat dissipation vent 10, improving the air exchange rate in the cabinet 2 and achieving better heat dissipation.
[0023] Working principle: When using this easy-to-disassemble modular high and low voltage switchgear housing, firstly, pull the locking rod 501 outward and rotate it. The locking block 503 disengages from the locking groove 504 and rotates into the circular groove where the spring 502 is located. The locking rod 501 is unlocked from the cabinet 2. By lifting the side shell 1 with the handle 11 and pulling it outward, the insert 3 can be slid out of the L-groove 4. The side shell 1 can then be removed from the cabinet 2. The reverse operation allows for quick installation. The spring 502 applies a rightward pushing force to the locking rod 501, ensuring that the locking rod 501 is stably inserted into the cabinet 2. The ventilation fan 7 introduces air into the cabinet 2. The air is filtered by the dust filter 6 and the drying screen 8 to remove dust and moisture, ensuring the cleanliness of the inside of the cabinet 2. The cooling fan 9 exhausts the air inside the cabinet 2 through the heat dissipation vent 10, improving the air exchange rate in the cabinet 2 and resulting in better heat dissipation.
Claims
1. A modular high and low voltage switchgear enclosure that is easy to assemble and disassemble, comprising a side shell (1) and a cabinet body (2), characterized in that, A locking assembly (5) is installed inside the upper side of the side shell (1). The cabinet (2) is installed on the right side of the side shell (1), and an L-groove (4) is installed inside the side wall of the cabinet (2). An insert (3) is installed inside the side wall of the side shell (1), and the insert (3) is welded to the side shell (1).
2. The modular high and low voltage switchgear housing for easy assembly and disassembly according to claim 1, characterized in that, The locking assembly (5) includes a locking lever (501) and a spring (502), and the spring (502) is installed on the periphery of the locking lever (501).
3. The modular high and low voltage switchgear housing for easy assembly and disassembly according to claim 2, characterized in that, The locking component (5) further includes a locking block (503) and a locking groove (504). The locking block (503) is provided on the right side of the spring (502), and the locking groove (504) is installed on the periphery of the locking block (503).
4. The modular high and low voltage switchgear housing for easy assembly and disassembly according to claim 1, characterized in that, A handle (11) is installed on the left side of the side shell (1), and the handle (11) is welded to the side shell (1).
5. The modular high and low voltage switchgear housing for easy assembly and disassembly according to claim 1, characterized in that, An air exchange fan (7) is installed on the upper part of the inside of the side shell (1), and the air exchange fan (7) and the side shell (1) are connected by an embedded connection.
6. The modular high and low voltage switchgear housing for easy assembly and disassembly according to claim 5, characterized in that, A dust filter (6) is installed on the left side of the ventilation fan (7), and a drying net (8) is installed on the right side of the ventilation fan (7).
7. The modular high and low voltage switchgear housing for easy assembly and disassembly according to claim 1, characterized in that, A cooling fan (9) is installed inside the lower part of the side shell (1), and a heat dissipation vent (10) is installed on the left side of the cooling fan (9).