A low-voltage power distribution cabinet unit drawer mounting mechanism

Abstract

The utility model discloses a low -voltage distribution cabinet unit drawer mounting mechanism, including the supporting plate, two adjacent the supporting plate between the installation has the hand shake unit drawer, the supporting plate top both sides symmetry is equipped with the guide rail, the guide rail bottom end both sides vertical fixed connection has the T -block, the supporting plate bottom both sides all are seted up T -type hole, and the T -block is hooked on the supporting plate through T -type hole, the guide rail bottom end both sides and the corresponding place of supporting plate all are seted up the bolt perforation, the hand shake unit drawer both sides all rotatory mounting has the ball bearing, through the design of the vertical interval distribution of many supporting plates, can adapt the drawer layered installation demand, and the supporting plate is hooked with the guide rail with the T -block, T -type hole pre -positioning adds the bolt fixed double -connection mode, reduces the assembly alignment difficulty again, and promotes the connection stability, and the hand shake unit drawer both sides ball bearing and the roller cooperation guide rail roll, and the push -and -pull friction resistance is reduced greatly.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, and in particular to a drawer mounting mechanism for a low-voltage power distribution cabinet unit. Background Technology

[0002] In the field of low-voltage distribution cabinets, unit drawers, as core components that carry power distribution elements and realize circuit branch control and maintenance, need to have the characteristics of reasonable layered layout, smooth push-pull operation, and stable installation structure to adapt to the complex power distribution needs and long-term operational stability requirements inside the distribution cabinet. In the installation of unit drawers in existing low-voltage distribution cabinets, the installation of trays lacks modular design flexibility, making it difficult to conveniently adjust the spacing between adjacent trays according to drawers of different height specifications, resulting in poor adaptability. At the same time, the assembly between trays, guide rails and drawers lacks a precise pre-positioning structure, which not only makes alignment difficult and inefficient during assembly, but also results in insufficient connection stability after assembly. Long-term use is prone to loosening due to vibration, which in turn affects the normal push-pull and use of the drawer.

[0003] Therefore, those skilled in the art have provided a low-voltage distribution cabinet unit drawer mounting mechanism to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a drawer installation mechanism for low-voltage distribution cabinet units.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A low-voltage distribution cabinet unit drawer mounting mechanism includes a tray, with multiple trays spaced vertically apart. A hand-cranked unit drawer is installed between two adjacent trays. The top two sides of the tray are symmetrically provided with guide rails, and T-shaped blocks are vertically fixed to the bottom two sides of the guide rails. Two T-shaped holes are opened on each side of the top of the tray along its width, and the T-shaped blocks are hooked onto the tray through these holes. Bolt holes are opened on both sides of the bottom of the guide rails and corresponding locations on the tray, and bolts are used to fix the tray to the guide rails. Ball bearings are rotatably mounted on both sides of the hand-cranked unit drawer, and the ball bearings are tactilely connected to the inner side of the guide rails.

[0006] Preferably, the T-shaped block and the T-shaped hole are arranged vertically, the wide part of the top of the T-shaped block can pass through the wide part of the T-shaped hole, and after sliding, the narrow part of the T-shaped block is located in the narrow part of the T-shaped hole, and the wide part of the T-shaped block is hooked below the narrow part of the T-shaped hole.

[0007] Preferably, the outer diameter of the ball bearing is adapted to the height of the inner side of the guide rail, and rollers are rotatably installed on both sides of the hand-cranked unit drawer, with the rollers rolling and fitting against the top of the inner side of the guide rail.

[0008] Preferably, a frame is fixed to the edge of the pallet, and mounting holes are provided on both sides of the frame.

[0009] Preferably, the bottom inner side of the guide rail is provided with an upward limiting protrusion, the limiting protrusion is in contact with the bottom of the hand-cranked unit drawer, and a travel stop block is integrally fixed to one end of the bottom of the hand-cranked unit drawer.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The multi-tread vertically spaced design accommodates drawer layer installation requirements. The trays and guide rails utilize a dual connection method—T-blocks, T-hole hooks, and bolts—to pre-position and secure the connection, reducing assembly alignment difficulty and improving connection stability, effectively preventing loosening over time. The hand-cranked unit drawer features ball bearings and rollers on both sides that work with the guide rails, significantly reducing pushing and pulling friction resistance, making operation easier and minimizing component wear. The tray edge frame facilitates quick fixation of the tray to the cabinet, while the guide rail limit protrusions and drawer travel blocks prevent the drawer from sliding upwards or excessively. Overall, the mechanism ensures convenient assembly, stable operation, and safe operation, meeting the usage requirements of low-voltage distribution cabinet unit drawers. Attached Figure Description

[0011] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the drawer mounting mechanism of the low-voltage distribution cabinet unit proposed in this utility model; Figure 2 This is a schematic diagram of the pallet structure proposed in this utility model; Figure 3 This is a schematic diagram of the guide rail structure proposed in this utility model; Figure 4 This is a schematic diagram of the ball bearing mounting structure proposed in this utility model; Figure 5 The present utility model proposes Figure 2 Enlarged structural diagram at point A in the middle; Figure 6 The present utility model proposes Figure 4 Enlarged structural diagram at point B.

[0013] In the diagram: 1. Tray; 2. Hand-cranked unit drawer; 3. Guide rail; 4. T-block; 5. T-hole; 6. Bolt hole; 7. Ball bearing; 8. Roller; 9. Frame; 10. Mounting hole; 11. Limiting protrusion; 12. Stroke stop block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-6 A low-voltage distribution cabinet unit drawer installation mechanism includes a tray 1, with multiple trays 1 spaced apart along the vertical direction, and a hand-cranked unit drawer 2 installed between two adjacent trays 1. The top two sides of the tray 1 are symmetrically provided with guide rails 3, and the bottom two sides of the guide rails 3 are vertically fixed with T-shaped blocks 4. Two T-shaped holes 5 are opened on the top two sides of the tray 1 along the width direction of the tray 1. The T-shaped blocks 4 are hooked onto the tray 1 through the T-shaped holes 5. The bottom two sides of the guide rails 3 and the corresponding positions of the tray 1 are provided with bolt holes 6. The tray 1 and the guide rails 3 are fixed by bolts. The hand-cranked unit drawer 2 is rotatably installed on both sides, and the ball bearings 7 are rotatably connected to the inside of the guide rails 3.

[0016] By adopting the above technical solution, on the one hand, the tray 1 is set at intervals along the vertical direction, providing layered installation space for the hand-cranked unit drawer 2. The number of drawers can be flexibly configured according to the actual power distribution needs of the low-voltage distribution cabinet, improving the utilization rate of the cabinet's internal space. On the other hand, the guide rail 3 is initially positioned by hooking the T-shaped block 4 with the T-shaped hole 5 of the tray 1, and then fixed by bolts through the bolt holes 6. The double connection structure effectively prevents the guide rail 3 from loosening or shifting during long-term use, ensuring the overall stability of the structure. At the same time, the ball bearings 7 on both sides of the hand-cranked unit drawer 2 are rolled to the inner side of the guide rail 3, which greatly reduces the frictional resistance when pushing and pulling the drawer, making the drawer operation more effortless, reducing component wear, and extending the service life of the mechanism.

[0017] T-block 4 and T-hole 5 are set vertically. The wide part of the top of T-block 4 can pass through the wide part of T-hole 5. After sliding, the narrow part of T-block 4 is located in the narrow part of T-hole 5, and the wide part of T-block 4 is hooked below the narrow part of T-hole 5.

[0018] Using the above technical solution, the T-block 4 and the T-hole 5 are perpendicular in the spatial plane. By limiting the "vertical setting + wide insertion + narrow hook" relationship between the T-block 4 and the T-hole 5, the wide part of the T-block 4 is hooked below the narrow part of the T-hole 5, directly constraining the guide rail 3 in the vertical direction, effectively preventing the guide rail 3 from falling off vertically. Subsequently, combined with the bolt fixing through the bolt hole 6, the connection stability between the guide rail 3 and the tray 1 is further strengthened, avoiding horizontal deviation of the guide rail 3. The double fixing structure not only reduces the difficulty of assembly alignment but also greatly improves the connection reliability, laying the foundation for stable drawer sliding. The outer diameter of the ball bearing 7 is adapted to the height of the inner side of the guide rail 3. The hand-cranked unit drawer 2 is also equipped with rollers 8 on both sides, and the rollers 8 roll and fit against the top of the inner side of the guide rail 3.

[0019] Using the above technical solution, the ball bearing 7 is adapted to the inner side of the guide rail 3, and the roller 8 rolls against the top of the inner side of the guide rail 3. The combination of the two reduces the frictional resistance when the hand-cranked unit drawer 2 is pushed and pulled, and can also distribute the weight of the drawer to avoid overload damage to the components. At the same time, it prevents the drawer from shaking when sliding and ensures smooth pushing and pulling.

[0020] A frame 9 is fixed to the edge of the pallet 1, and mounting holes 10 are provided on both sides of the frame 9.

[0021] By adopting the above technical solution, the mounting holes 10 on both sides of the frame 9 facilitate the quick fixing of the tray 1 to the power distribution cabinet body, thereby improving the ease of assembly.

[0022] The bottom inner side of the guide rail 3 is provided with an upward limiting protrusion 11, which fits against the bottom of the hand-cranked unit drawer 2. A travel stop block 12 is integrally fixed to one end of the bottom of the hand-cranked unit drawer 2.

[0023] Using the above technical solution, the limiting protrusion 11 on the inner side of the guide rail 3 fits against the bottom of the hand-cranked unit drawer 2, which can prevent the drawer from moving upwards; when the drawer slides outwards, the travel block 12 at its top will abut against the limiting protrusion 11, thereby limiting the drawer's outward sliding stroke, avoiding excessive pulling out of the drawer which could cause it to fall off or damage internal components, and ensuring operational safety.

[0024] Working principle: First, the initial positioning is completed by hooking the T-shaped hole 5 at the bottom of the tray 1 with the T-shaped block 4 at the top of the guide rail 3. Then, the tray 1 and the guide rail 3 are fixed by bolts through the bolt holes 6. After assembly, the ball bearings 7 on both sides of the hand-cranked unit drawer 2 roll along the inner side of the guide rail 3, and the bottom rollers 8 roll against the top of the inner side of the guide rail 3, so as to realize the smooth pushing and pulling of the drawer. At the same time, the side frame 9 of the tray 1 facilitates the fixing of the mechanism and the cabinet. The limit protrusion 11 of the guide rail 3 prevents the drawer from sliding upward. The drawer travel block 12 cooperates with the limit protrusion 11 to limit the drawer's outward sliding stroke, ensuring the overall stable and safe operation.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drawer mounting mechanism for a low-voltage distribution cabinet unit, comprising a tray (1), characterized in that, The trays (1) are distributed at intervals along the vertical direction, and a hand-cranked unit drawer (2) is installed between two adjacent trays (1); The top two sides of the tray (1) are symmetrically provided with guide rails (3). T-shaped blocks (4) are vertically fixed to the bottom two sides of the guide rails (3). Two T-shaped holes (5) are opened on the top two sides of the tray (1) along the width direction of the tray (1). The T-shaped blocks (4) are hooked to the tray (1) through the T-shaped holes (5). Bolt holes (6) are opened on the bottom two sides of the guide rails (3) and the corresponding positions of the tray (1). The tray (1) and the guide rails (3) are fixed by bolts. Ball bearings (7) are rotatably installed on both sides of the hand-cranked unit drawer (2). The ball bearings (7) are rotatably connected to the inside of the guide rails (3).

2. The low-voltage distribution cabinet unit drawer mounting mechanism according to claim 1, characterized in that, The T-shaped block (4) and the T-shaped hole (5) are arranged vertically. The wide part of the top of the T-shaped block (4) can pass through the wide part of the T-shaped hole (5). After sliding, the narrow part of the T-shaped block (4) is located in the narrow part of the T-shaped hole (5), and the wide part of the T-shaped block (4) is hooked below the narrow part of the T-shaped hole (5).

3. The low-voltage distribution cabinet unit drawer mounting mechanism according to claim 1, characterized in that, The outer diameter of the ball bearing (7) is adapted to the height of the inner side of the guide rail (3). Rollers (8) are also rotatably installed on both sides of the hand-cranked unit drawer (2). The rollers (8) roll and fit against the top of the inner side of the guide rail (3).

4. The low-voltage distribution cabinet unit drawer mounting mechanism according to claim 1, characterized in that, The pallet (1) is fixedly connected to a frame (9) on its side, and mounting holes (10) are provided on both sides of the frame (9).

5. The low-voltage distribution cabinet unit drawer mounting mechanism according to claim 1, characterized in that, The guide rail (3) has an upward limiting protrusion (11) at the bottom of its inner side. The limiting protrusion (11) fits against the bottom of the hand-cranked unit drawer (2). A travel stop block (12) is integrally fixed to one end of the bottom of the hand-cranked unit drawer (2).

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