Built-in electrical cabinet lifting mechanism

Abstract

This utility model relates to the technical field of electrical cabinet lifting mechanisms, specifically to a built-in electrical cabinet lifting mechanism, including a lifting frame, a positioning block, and a crane connector. The crane connector is connected to the lifting frame and is used to connect with a crane to lift the electrical cabinet. The positioning block is fixedly mounted on the lifting frame and has a positioning groove for covering and engaging with the front frame of the electrical cabinet. Through the cooperation of the lifting frame, positioning block, and crane connector, during lifting, the crane connector connects to the crane, and the positioning groove on the positioning block engages with the front frame of the electrical cabinet. By engaging and fixing with the front frame of the electrical cabinet itself, the lifting mechanism is connected to the electrical cabinet, ensuring that the crane can stably lift the electrical cabinet and eliminating reliance on pre-processed parts on the top of the electrical cabinet.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical cabinet lifting mechanisms, specifically to an internal electrical cabinet lifting mechanism. Background Technology

[0002] In industrial power distribution, data centers, and various power facilities, electrical cabinets and switchgear are complete sets of equipment used to centrally install switching devices, measuring instruments, protective electrical appliances, and auxiliary equipment. Their weight typically ranges from hundreds of kilograms to several tons. Safe and efficient lifting operations are paramount during the transportation, installation, and maintenance of electrical cabinets. Currently, the lifting methods commonly used in the industry have many inherent defects and urgently need improvement.

[0003] Currently, the lifting of electrical cabinets mainly relies on pre-set lifting points on the top of the cabinet, as follows: External eye bolts. A mounting base with internal threads is welded or machined onto the top of the electrical cabinet. During lifting, the eye bolts must be manually screwed into the base before lifting. This method of using external eye bolts has the following drawbacks: Cumbersome process and low efficiency: Before each lifting operation, operators must manually install four or more eye bolts, and disassembly is required after lifting, increasing additional labor time and costs. Risk of forgetting or incorrect installation: In urgent or busy operations, operators may forget to install a particular eye bolt or fail to fully tighten it, leaving a significant safety hazard. Affects aesthetics and safety: When not in use, the exposed mounting base affects the overall aesthetics of the electrical cabinet. Furthermore, the protruding mounting base and eye bolts may become points of impact during transportation and daily use, potentially causing accidental injury. Thread damage: Long-term use or improper operation can lead to thread wear or corrosion, causing installation difficulties or even failure, resulting in high maintenance costs.

[0004] Specialized lifting holes. Some electrical cabinet designs include holes of a specific shape directly cut into the top structural beam for use with specialized attachments on crane hooks, such as CN106219397A. These specialized lifting holes have the following drawbacks: Reduced structural strength: Opening holes in critical load-bearing areas inevitably weakens the overall structural strength and rigidity of the cabinet top, potentially causing deformation of the top cover, especially when lifting heavy cabinets. Risk to protection level: Openings in the top pose a challenge to the cabinet's sealing. Even with a cover, long-term use may allow dust and moisture to intrude due to aging seals, affecting the reliable operation of internal electrical components. Excessive specialization: The size and shape of the lifting hole may not match some general-purpose lifting equipment, limiting the flexibility of lifting operations.

[0005] In summary, the core problem with traditional electrical cabinet lifting methods lies in their reliance on pre-fabricated structures on the top of the cabinet. This design paradigm leads to the following common pain points: Intrusive modifications to the cabinet structure (openings) affect strength, sealing, and aesthetics. Additional components (lifting rings) and operational procedures are added, reducing efficiency and increasing labor and management costs. There are ongoing safety hazards, whether from forgotten installation, thread damage, or structural weakening. Utility Model Content

[0006] 1. The problem to be solved To address the problem that lifting electrical cabinets in existing technologies relies on pre-processed structures on the top of the cabinet, this utility model provides a built-in electrical cabinet lifting mechanism that eliminates the need for pre-processed structures on the top of the cabinet.

[0007] 2. Technical Solution To solve the above problems, the technical solution adopted by this utility model is as follows: A built-in electrical cabinet lifting mechanism includes a lifting frame, a positioning block, and a crane connector; The crane connector is attached to the lifting frame and is used to connect with the crane to lift the electrical cabinet. The positioning block is fixedly mounted on the lifting frame, and the positioning block is provided with a positioning groove, which is used to cover and snap onto the front frame of the electrical cabinet.

[0008] As a preferred embodiment of the present invention, the lifting frame includes an upper lifting arm, on which the positioning block is fixedly disposed, and the positioning groove on the positioning block is used to cover and engage with the upper frame of the front frame.

[0009] As a preferred embodiment of this utility model, the lifting frame further includes a lower lifting arm, which is connected to the upper lifting arm via a connecting arm. The positioning blocks are fixedly provided at the left and right ends of the lower lifting arm, respectively, for covering and engaging the left and right side frames of the front frame.

[0010] As a preferred embodiment of this utility model, the lower boom is configured as a telescopic boom, and the distance between the positioning block at its left end and the positioning block at its right end can be adjusted to accommodate electrical cabinets of different widths.

[0011] As a preferred embodiment of the present invention, the lower boom includes a lower middle boom, a lower left boom slidably connected to the left side of the lower middle boom, and a lower right boom slidably connected to the right side of the lower middle boom, and the lower left boom and the lower right boom can be fixed at any position on the lower middle boom; The lower end of the connecting arm is connected to the lower middle boom. The positioning block is installed on both the lower left boom and the lower right boom to cover and snap onto the left and right side frames of the front frame.

[0012] As a preferred embodiment of this utility model, a sliding cavity is provided inside the lower middle boom, and the lower left boom and the lower right boom are both slidably connected inside the sliding cavity; Locking nuts are threadedly connected to the sliding cavity areas on both the left and right sides of the lower middle boom. Pressure grooves corresponding to the locking nuts are provided on both the lower left boom and the lower right boom, and the pressure grooves extend along the length of the lower boom.

[0013] In a preferred embodiment of this utility model, the connecting arm is configured as a telescopic arm so that the distance between the upper arm and the lower arm can be adjusted.

[0014] As a preferred embodiment of the present invention, the connecting arm includes an upper connecting arm whose upper end is fixedly connected to the upper boom, and a lower connecting arm whose lower end is fixedly connected to the lower boom. The lower connecting arm is provided with a sliding cavity, and the upper connecting arm is slidably disposed in the sliding cavity. A locking nut is threaded onto the area of ​​the sliding cavity on the lower connecting arm, and a pressure groove corresponding to the locking nut is provided on the upper connecting arm, with the pressure groove extending along the length of the connecting arm.

[0015] As a preferred embodiment of this utility model, the crane connecting component includes a first connecting component and a second connecting component. The first connecting component is fixedly connected to the front side of the upper frame of the lifting frame, and the second connecting component is fixedly connected to the first connecting component. When lifting the electrical cabinet, the second connector is located outside the top of the electrical cabinet, and multiple lifting holes are provided on the second connector along the thickness direction of the electrical cabinet.

[0016] 3. Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model utilizes the cooperation of a lifting frame, a positioning block, and a crane connector. During lifting, the crane connector connects to the crane, and the positioning groove on the positioning block engages with the front frame of the electrical cabinet. By engaging and fixing with the front frame of the electrical cabinet itself, the lifting mechanism is connected to the electrical cabinet, ensuring that the crane can stably lift the electrical cabinet and eliminating the reliance on pre-processed parts on the top of the electrical cabinet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the lifting mechanism and the cabinet in this utility model; Figure 2 This is a front view schematic diagram of the lifting mechanism in this utility model; Figure 3 This is a three-dimensional structural diagram of the lifting mechanism in this utility model.

[0018] Explanation of the labels in the diagram: 100. Lifting frame; 110. Upper boom; 120. Lower boom; 121. Lower middle boom; 122. Lower left boom; 123. Lower right boom; 130. Connecting boom; 131. Upper connecting boom; 132. Lower connecting boom; 200. Positioning block; 210. Positioning groove; 300. Crane connector; 310. First connector; 320. Second connector; 330. Lifting hole; 400. Electrical cabinet; 410. Front frame; 411. Top frame; 412. Left side frame; 413. Right side frame; 500. Lock nut; 600. Pressure tank. Detailed Implementation

[0019] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0020] The structures, proportions, and sizes illustrated in the accompanying drawings are solely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0021] like Figures 1-3 As shown, this utility model provides a built-in electrical cabinet lifting mechanism, including a lifting frame 100, a positioning block 200, and a crane connector 300. Both the positioning block 200 and the crane connector 300 are connected to the lifting frame 100. During lifting, the crane connector 300 connects to the crane, and the positioning block 200 engages with the front frame 410 of the electrical cabinet 400. This engagement with the front frame 410 of the electrical cabinet 400 ensures the connection between the lifting mechanism and the electrical cabinet 400, guaranteeing that the crane can stably lift the electrical cabinet 400. This eliminates the reliance on pre-processed parts on the top of the electrical cabinet 400 and removes the drawbacks associated with pre-processed parts.

[0022] The specific structure of the positioning block 200 is as follows: the positioning block 200 can be set as a square block, and the positioning block 200 is provided with a positioning groove 210. The positioning groove 210 is preferably set as a U-shaped groove. During lifting, the U-shaped positioning groove 210 can cover and snap onto the front frame 410 of the electrical cabinet 400. The covering and snapping form improves the convenience of connecting the lifting mechanism and the electrical cabinet 400 on the one hand, and can prevent the electrical cabinet 400 from detaching from the lifting mechanism during the lifting process on the other hand.

[0023] It should be noted that the electrical cabinet 400 generally includes a frame structure and cabinet panels wrapped around the outside of the frame structure. The frame structure serves as the supporting skeleton of the electrical cabinet 400, and has high structural strength, enabling it to stably bear the weight of the electrical cabinet 400 during lifting. One side of any one edge of its front frame 410 is attached to the cabinet panel, while the other three sides are located inside the electrical cabinet 400 and are covered by the positioning groove 210 during lifting.

[0024] In one embodiment, the lifting frame 100 includes an upper lifting arm 110, on which a positioning block 200 is fixedly mounted. The positioning groove 210 on the positioning block 200 faces upwards and is used to cover and engage with the upper frame 411 of the front frame 410. Since the electrical cabinet 400 is typically lifted from above, the positioning block 200 on the upper lifting arm 110 bears the weight of the electrical cabinet 400. Furthermore, the front, rear, and lower sides of the upper frame 411 are covered by the positioning block 200, preventing the cabinet from detaching from the positioning block 200. Two or more positioning blocks 200 may be provided on the upper lifting arm 110, and they may be evenly spaced on the upper lifting arm 110. Preferably, two positioning blocks 200 are provided, located at the left and right ends of the upper lifting arm 110, respectively.

[0025] In one embodiment, the lifting frame 100 includes a lower lifting arm 120 in addition to the upper lifting arm 110. Both the upper lifting arm 110 and the lower lifting arm 120 are part of the lifting frame 100 and are connected to each other by a connecting arm 130. During lifting, their relative positions are fixed. Positioning blocks 200 are fixedly provided at both ends of the lower lifting arm 120. During lifting, the positioning block 200 on the left side of the lower lifting arm 120 covers and engages the left side frame 412 of the front frame 410, and the positioning block 200 on the right side of the lower lifting arm 120 covers and engages the right side frame 413 of the front frame 410, so that the lifting frame 100 will not sway from side to side relative to the electrical cabinet 400, thereby improving the stability of the electrical cabinet 400 during the lifting process.

[0026] Optionally, such as Figure 1 As shown, the positioning block 200 is detachably connected to the end of the lower boom 120 by screws. When connecting to the electrical cabinet 400, the positioning block 200 is first snapped into the left side frame 412 and the right side frame 413, and then the two ends of the lower boom 120 are connected to the positioning block 200.

[0027] In one implementation, such as Figure 2 and Figure 3 As shown, the lower boom 120 is configured as a telescopic boom. Based on the telescopic nature of the lower boom 120, the distance between the positioning block 200 at its left end and the positioning block 200 at its right end can be adjusted. The length of the lower boom 120 can be adjusted according to the width of the electrical cabinet 400 to be lifted, allowing the lifting mechanism to be applicable to electrical cabinets 400 of different widths. Furthermore, because the lower boom 120 is telescopic, its length can be shortened before engaging with the front frame 410. After the positioning blocks 200 at both ends of the lower boom 120 are aligned with the front frame 410, the lower boom 120 is then extended, allowing the positioning blocks 200 on the lower boom 120 to cover and engage with the left side frame 412 and the right side frame 413.

[0028] As one form of the aforementioned telescopic lower boom 120, the lower boom 120 includes a lower middle boom 121, a lower left boom 122 slidably connected to the left side of the lower middle boom 121, and a lower right boom 123 slidably connected to the right side of the lower middle boom 121. The lower middle boom 121 is connected to the upper boom 110 via a connecting arm 130. Positioning blocks 200 are installed on both the lower left boom 122 and the lower right boom 123 to cover and engage the left side frame 412 and the right side frame 413 of the front frame 410. In this configuration, both the lower left boom 122 and the lower right boom 123 can be integrally formed with their corresponding positioning blocks 120, improving the connection strength.

[0029] The length of the entire lower boom 120 can be adjusted by adjusting the length of the lower left boom 122 extending beyond the lower middle boom 121 and the length of the lower right boom 123 extending beyond the lower middle boom 121. Furthermore, the lower left boom 122 and the lower right boom 123 can be fixed to the lower middle boom 121 at any position they slide on it, thus fixing the overall length of the lower boom 120.

[0030] Furthermore, due to the uneven weight distribution of the electrical cabinet 400 and the numerous electrical components installed inside, the center of the electrical cabinet 400 may deviate from the structural center. While ensuring that the positioning blocks 200 on the lower left boom 122 and lower right boom 123 are engaged with the left side frame 412 and right side frame 413 respectively, adjusting the length of the lower left boom 122 and lower right boom 123 extending beyond the lower middle boom 121 can adjust the overall center of the lifting frame 100. For example, when the center of gravity of the electrical cabinet 400 is biased to the left, with the length of the lower boom 120 fixed, the length of the lower left boom 122 extending out of the lower middle boom 121 is shortened, and the length of the lower right boom 123 extending out of the lower middle boom 121 is increased. This can cause the lower middle boom 121, the connecting arm 130, and the upper boom 110 to shift to the left, making the center of gravity of the lifting frame 100 as a whole more consistent with the center of gravity of the electrical cabinet 400. This allows the upper boom 110 to support the center of gravity of the electrical cabinet 400, preventing the electrical cabinet 400 from tilting to the left when it is lifted, and improving the stability of the electrical cabinet 400 during lifting.

[0031] As one form of sliding connection between the lower left boom 122 and the lower right boom 123 and the lower middle boom 121, the lower middle boom 121 is provided with a sliding cavity, and the lower left boom 122 and the lower right boom 123 are both slidably connected in the sliding cavity; specifically, the sliding cavity can be set as a continuous cavity connecting the left and right ends of the lower middle boom 121, or it can be set as two non-continuous cavities located on the left and right sides of the lower middle boom 121 respectively.

[0032] Based on the sliding cavity provided in the lower middle boom 121, locking nuts 500 are threadedly connected to the areas corresponding to the sliding cavity on both the left and right sides of the lower middle boom 121. The lower left boom 122 and the lower right boom 123 are each provided with a pressure groove 600 corresponding to the locking nut 500. The pressure groove 600 extends along the length of the lower boom 120. When it is necessary to fix the lower left boom 122 or the lower right boom 123 to the lower middle boom 121, tighten the corresponding locking nut 500 so that the locking nut 500 presses the corresponding pressure groove 600, and fixes the lower left boom 122 or the lower right boom 123 by friction. Since the positioning block 200 on the lower boom 120 is mainly used to constrain the relative position of the lifting frame 100 and the electrical cabinet 400 in the left and right directions, and is not used to bear the weight of the electrical cabinet 400, the pressure applied by the locking nut 500 is sufficient to fix the lower left boom 122 and the lower right boom 123 on the lower middle boom 121.

[0033] In one embodiment, a connecting arm 130 is provided between the upper boom 110 and the lower boom 120. The upper end of the connecting arm 130 is fixedly connected to the upper boom 110, and the lower end of the connecting arm 130 is fixedly connected to the lower boom 120. The connecting arm 130 is configured as a telescopic arm, so that the distance between the upper boom 110 and the lower boom 120 can be adjusted to accommodate electrical cabinets 400 of different heights.

[0034] As one embodiment of the aforementioned retractable connecting arm 130, the connecting arm 130 includes an upper connecting arm 131 and a lower connecting arm 132. The upper end of the upper connecting arm 131 is fixedly connected to the upper lifting arm 110, and the lower end of the lower connecting arm 132 is fixedly connected to the lower lifting arm 120, or more specifically, to the lower middle lifting arm 121. A sliding cavity is provided inside the lower connecting arm 132, and the upper connecting arm 131 is slidably disposed within the sliding cavity. As one way to fix the upper connecting arm 131 and the lower connecting arm 132, a locking nut 500 is threadedly connected to the area of ​​the sliding cavity on the lower connecting arm 132, and a pressure groove 600 corresponding to the locking nut 500 is provided on the upper connecting arm 131. The pressure groove 600 extends along the length of the connecting arm 130. After adjusting the distance between the upper lifting arm 110 and the lower lifting arm 120, tightening the locking nut 500 can fix the upper connecting arm 131 and the lower connecting arm 132, thereby fixing the overall length of the connecting arm 130.

[0035] In one embodiment, the crane connector 300 includes a first connector 310 and a second connector 320. The first connector 310 is fixedly connected to the front side of the upper frame of the lifting frame 100 to avoid interference with the cabinet of the electrical cabinet 400. The second connector 320 is fixedly connected to the first connector 310. When lifting the electrical cabinet 400, the second connector 320 is located outside the top of the electrical cabinet 400, and multiple lifting holes 330 are provided on the second connector 320 along the thickness direction of the electrical cabinet 400. The appropriate lifting hole 330 can be selected according to the center of gravity position of the electrical cabinet 400. For example, if the center of gravity of the electrical cabinet 400 is biased to the rear, the relatively rearward lifting hole 330 is selected to improve the balance of the electrical cabinet 400 after it is lifted.

[0036] It should be noted that the lifting mechanism in this utility model is also applicable to the turning and lifting of the electrical cabinet 400, that is, lifting the lying electrical cabinet 400 to an upright state. The positioning block 200 can prevent the electrical cabinet 400 from falling during the turning and lifting process.

[0037] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A built-in electrical cabinet lifting mechanism, characterized in that: Includes a lifting frame (100), a positioning block (200), and a crane connector (300); The crane connector (300) is connected to the lifting frame (100) and is used to connect with the crane to lift the electrical cabinet (400); The positioning block (200) is fixedly mounted on the lifting frame (100), and the positioning block (200) is provided with a positioning groove (210), which is used to cover and snap onto the front frame (410) of the electrical cabinet (400).

2. The built-in electrical cabinet lifting mechanism according to claim 1, characterized in that: The lifting frame (100) includes an upper lifting arm (110), on which the positioning block (200) is fixedly disposed, and the positioning groove (210) on the positioning block (200) is used to cover and engage with the upper frame (411) of the front frame (410).

3. The built-in electrical cabinet lifting mechanism according to claim 2, characterized in that: The lifting frame (100) also includes a lower lifting arm (120), which is connected to the upper lifting arm (110) via a connecting arm (130). The lower lifting arm (120) is fixedly provided with positioning blocks (200) at its left and right ends, which are used to cover and snap onto the left side frame (412) and right side frame (413) of the front frame (410).

4. The built-in electrical cabinet lifting mechanism according to claim 3, characterized in that: The lower boom (120) is configured as a telescopic boom, and the distance between the positioning block (200) at its left end and the positioning block (200) at its right end can be adjusted to accommodate electrical cabinets (400) of different widths.

5. The built-in electrical cabinet lifting mechanism according to claim 4, characterized in that: The lower boom (120) includes a lower middle boom (121), a lower left boom (122) slidably connected to the left side of the lower middle boom (121), and a lower right boom (123) slidably connected to the right side of the lower middle boom (121), and the lower left boom (122) and the lower right boom (123) can be fixed at any position on the lower middle boom (121); The lower end of the connecting arm (130) is connected to the lower middle boom (121). The lower left boom (122) and the lower right boom (123) are each equipped with the positioning block (200) for covering and snapping onto the left side frame (412) and the right side frame (413) of the front frame (410).

6. The built-in electrical cabinet lifting mechanism according to claim 5, characterized in that: The lower middle boom (121) is provided with a sliding cavity, and the lower left boom (122) and the lower right boom (123) are slidably connected in the sliding cavity; Locking nuts (500) are threadedly connected to the sliding cavity areas on both the left and right sides of the lower middle boom (121). The lower left boom (122) and the lower right boom (123) are both provided with pressure grooves (600) corresponding to the locking nuts (500). The pressure grooves (600) extend along the length direction of the lower boom (120).

7. The built-in electrical cabinet lifting mechanism according to claim 3, characterized in that: The connecting arm (130) is configured as a telescopic arm so that the distance between the upper arm (110) and the lower arm (120) can be adjusted.

8. The built-in electrical cabinet lifting mechanism according to claim 7, characterized in that: The connecting arm (130) includes an upper connecting arm (131) whose upper end is fixedly connected to the upper boom (110), and a lower connecting arm (132) whose lower end is fixedly connected to the lower boom (120). The lower connecting arm (132) is provided with a sliding cavity, and the upper connecting arm (131) is slidably disposed in the sliding cavity.

9. The built-in electrical cabinet lifting mechanism according to claim 8, characterized in that: A locking nut (500) is threaded onto the area of ​​the sliding cavity on the lower connecting arm (132), and a pressure groove (600) corresponding to the locking nut (500) is provided on the upper connecting arm (131), the pressure groove (600) extending along the length direction of the connecting arm (130).

10. The built-in electrical cabinet lifting mechanism according to any one of claims 1-9, characterized in that: The crane connector (300) includes a first connector (310) and a second connector (320). The first connector (310) is fixedly connected to the front side of the upper frame of the lifting frame (100), and the second connector (320) is fixedly connected to the first connector (310). When lifting the electrical cabinet (400), the second connector (320) is located outside the top of the electrical cabinet (400), and the second connector (320) is provided with a plurality of lifting holes (330) along the thickness direction of the electrical cabinet (400).

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