Power distribution cabinet surge protection device assembly

Abstract

The utility model belongs to the technical field of surge protectors, and particularly relates to a power distribution cabinet surge protector assembly which comprises a surge protector body, a clamping piece and a connecting piece, direct installation without a guide rail is achieved through a combined structure of the clamping piece and the connecting piece, the clamping piece is composed of a connecting plate, a sliding frame, a clamping frame and a clamping strip, the clamping frame is in sliding fit in the sliding frame and provides clamping force through the clamping spring, the outer wall of the clamping strip is covered with a cushion to protect a surge protector body shell, the connecting piece is composed of a hole frame, a stud and a through column, the through column penetrates through the wall of a power distribution cabinet and is fixed through a bolt and a nut, and positioning pull rods at the two ends of the hole frame are matched with positioning grooves of the connecting plate. By means of the design, the limitation that installation depends on a guide rail in the prior art is overcome, residual voltage is reduced, installation applicability is improved, meanwhile, high cost of reopening a mold is avoided, multi-scene installation of the surge protection device is achieved, and installation convenience and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of surge protection device, concretely relates to a switchgear surge protection device assembly. BACKGROUND

[0002] As an important part of the power system, switchgears are widely used in industrial and domestic power distribution, providing power support for various electrical equipment. In switchgears, surge protection devices are usually installed to protect the safe operation of the power system and prevent damage to equipment caused by lightning strikes or other overvoltage phenomena. The basic working principle of surge protection devices is that when the input voltage exceeds the predetermined safety threshold, it rapidly discharges the excess voltage energy to the ground or neutral line, thereby protecting sensitive electronic equipment connected thereafter from damage.

[0003] Currently, the installation method of traditional surge protection devices usually relies on rail fixing structures. This method requires the internal design of the switchgear to have standardized rail slots. However, in actual applications, some non-standard or special structure switchgears do not have rail slots, resulting in limited installation range of surge protection devices. In addition, the rail fixing method requires more installation steps, including pre-adjusting the rail length, embedding the protector in the rail and ensuring stability, which is complex and time-consuming, and requires certain operating ability of technicians, increasing maintenance costs and work difficulty.

[0004] For example, the patent with publication number CN211606087U discloses an SPD surge protection device, which is installed on a connecting steel frame. When the backup surge protection device slides into the connecting steel frame, the sliding contact piece extrudes the steel frame contact plate and achieves the best grounding effect, thereby improving the reliability of the device. However, this surge protection device still needs to be installed on the rail through the clamping assembly, without screw fixation. When installing such a surge protection device with a rail structure into a switchgear, additional rails must be installed, resulting in increased lead length and long installation lines, causing high residual voltage. In addition, if a surge protection device designed to be directly installed on the busbar is used, a new mold needs to be opened, resulting in increased cost. At the same time, due to the incompatibility of rail installation, the use range is narrow and replacement is difficult, with low cost performance. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the purpose of the utility model is to provide a switchgear surge protection device assembly that can be directly installed without relying on rails, which can adapt to various switchgear structures and simplify the installation process, improving installation efficiency and reliability.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] A power distribution cabinet surge protector assembly, comprising a surge protector body, a clamping piece and a connecting piece, the outside of the surge protector body is clamped with the clamping piece, and the bottom end of the clamping piece is assembled with the connecting piece, the clamping piece comprises a connecting plate and a clamping frame, a screw cylinder is vertically fixed in the middle of the connecting plate, and a sliding frame is horizontally fixed on the vertical end face of both sides of the connecting plate, the clamping frame is symmetrically provided with two pieces, and the two clamping frames are respectively slidingly assembled in the sliding frame, a sliding block is horizontally fixed on the end of the clamping frame, and the sliding block is slidingly assembled with the sliding frame, the connecting piece comprises a hole frame, the hole frame is arranged on the lower side of the connecting plate, a screw post is vertically fixed on the top surface of the hole frame, the screw post on the hole frame is threadedly assembled in the screw cylinder of the connecting plate, and a through column is vertically fixed on the rear end face of the hole frame.

[0008] Further, the through column penetrates the power distribution cabinet wall, and a bolt is horizontally fixed on the outer end face of the through column, and a nut is threadedly assembled on the bolt.

[0009] Further, the two ends of the hole frame are both horizontally slidingly penetrated and inserted with a positioning pull rod, the outer part of the positioning pull rod is sleeved with a positioning spring, and the two ends of the positioning spring are respectively fixed on the end of the positioning pull rod and the end face of the hole frame.

[0010] Further, the two ends of the connecting plate are both horizontally provided with a positioning slot, and the positioning slot of the connecting plate is slidingly inserted with the positioning pull rod.

[0011] Further, one end face of the sliding block is horizontally fixed with a clamping spring, and the other end of the clamping spring is fixed on the connecting plate.

[0012] Further, the top of the clamping frame is horizontally fixed with a clamping strip, and a soft pad is fixed on the outer wall of the clamping strip.

[0013] Further, the two sides of the surge protector body are both provided with a recess, and the recess is clamped with the clamping strip.

[0014] Compared with the prior art, the power distribution cabinet surge protector assembly has the following beneficial effects:

[0015] The power distribution cabinet surge protector assembly provided by the application solves the problem that the traditional surge protector installation mode relies on guide rails by designing the combined structure of the clamping piece and the connecting piece. The clamping piece comprises a connecting plate, a clamping frame, a sliding frame and a clamping strip, and the sliding cooperation of the clamping frame and the elastic force of the clamping spring enable the surge protector body to be stably clamped in the clamping piece without the need for additional guide rails. The soft pad design of the outer wall of the clamping strip further enhances the protection of the surge protector body, avoids the equipment damage problem caused by uneven fixing force in the traditional installation mode, and significantly improves the installation applicability and reliability of the surge protector.

[0016] The combination design of the hole frame, the stud and the through column provides an efficient mounting mode. The through column in the hole frame can directly penetrate the power distribution cabinet wall and is stably connected through the bolt and the nut, without the need of additionally installing a guide rail, thereby simplifying the installation process and reducing the installation difficulty. In addition, the positioning pull rod arranged at the two ends of the hole frame is matched with the positioning groove of the connecting plate, so that the assembly of the connecting piece and the clamping piece is more stable, the loosening problem caused by vibration in the use process is avoided, and the overall stability and service life of the assembly are improved.

[0017] Compared with the prior art, the present application not only overcomes the high residual pressure problem caused by the additional installation of the guide rail, but also avoids the high cost demand of re-opening the mold through optimization design. Through the reasonable layout of the clamping piece and the connecting piece, the present application realizes the multi-scene installation of the surge protector, which can be directly fixed on the power distribution cabinet and is compatible with different specifications of installation environment, thereby expanding the application range of the surge protector. At the same time, the design of the assembly fully considers the material selection and structural strength, further improves the performance-price ratio and use convenience of the product, and has significant practical value and market competitiveness. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the present application;

[0019] Figure 2 It is a structure schematic view of the whole in the disassembled state of the present application;

[0020] Figure 3 It is a structure schematic view of the surge protector in the disassembled state of the present application;

[0021] Figure 4 It is a structure schematic view of the clamping piece in the disassembled state of the present application;

[0022] Figure 5 It is a structure schematic view of the connecting piece in the disassembled state of the present application.

[0023] In the drawings, the component list represented by each reference sign is as follows:

[0024] 1, surge protector body; 11, groove; 2, clamping piece; 21, connecting plate; 211, positioning groove; 22, screw cylinder; 23, sliding frame; 24, clamping frame; 241, clamping strip; 242, soft pad; 25, sliding block; 26, clamping spring; 3, connecting piece; 31, hole frame; 32, stud; 33, through column; 34, bolt; 35, nut; 36, positioning pull rod; 37, positioning spring. DETAILED DESCRIPTION

[0025] In order to make the purpose and advantages of the utility model more clearly, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model and does not strictly limit the protection scope of the utility model specifically requested.

[0026] Reference Figures 1-5 As shown in the figure, a power distribution cabinet surge protector assembly, including surge protector body 1, clamping piece 2 and connecting piece 3. The outside of surge protector body 1 is fixed through clamping piece 2, the bottom end of clamping piece 2 is assembled with connecting piece 3. Surge protector body 1 is made of flame-retardant polycarbonate (PC) material, which can effectively improve the high temperature resistance and mechanical strength of the assembly. Clamping piece 2 is composed of connecting plate 21 and clamping frame 24, screw cylinder 22 is vertically fixed in the middle of connecting plate 21, screw cylinder 22 is made of high-strength aluminum alloy material, which ensures that it is not easy to deform in long-term use. The two sides of connecting plate 21 are symmetrically fixed with sliding frame 23 on the vertical end face, sliding frame 23 is made of wear-resistant stainless steel, which has good corrosion resistance. Clamping frame 24 is composed of two symmetrically arranged clamping plates, two clamping frames 24 are respectively assembled in sliding frame 23, the end of clamping frame 24 is horizontally fixed with sliding block 25, sliding block 25 is assembled with sliding frame 23 through cooperation, and the sliding gap is accurately controlled within 0.1 millimeter, which ensures smooth sliding.

[0027] Connecting piece 3 includes hole frame 31, hole frame 31 is arranged on the lower side of connecting plate 21, is manufactured by die forming process, and hard PVC material is selected to improve insulation performance. Screw column 32 is vertically fixed on the top surface of hole frame 31, screw column 32 is made of galvanized steel to enhance its oxidation resistance. Screw column 32 is fixed in screw cylinder 22 of connecting plate 21 through threaded assembly, the tolerance of threaded part is controlled within H7 level, which ensures tight fit; through hole column 33 is vertically fixed on the rear end surface of hole frame 31, through hole column 33 penetrates the wall of power distribution cabinet and is made of stainless steel to ensure high strength and durability.

[0028] Reference Figure 4 And Figure 5 As shown in the figure, the outer end surface of through hole column 33 is horizontally fixed with bolt 34 with a diameter of 8 millimeters, nut 35 with matching inner diameter is assembled on bolt 34 in a threaded manner, and the nut is designed to prevent loosening to prevent loosening due to vibration. Positioning pull rod 36 with a diameter of 6 millimeters is horizontally and slidingly inserted into both ends of hole frame 31, and positioning pull rod 36 is made of carbon steel with surface oxidation treatment. Positioning spring 37 is sleeved on the outside of positioning pull rod 36, positioning spring 37 is made of 65Mn spring steel, and both ends are fixed on the end of positioning pull rod 36 and the end surface of hole frame 31 through hot pressing, and the spring pre-compression amount is 5 millimeters to ensure positioning stability.

[0029] Reference Figure 4 And Figure 5As shown, the two ends of the connecting plate 21 are horizontally provided with positioning grooves 211 with a width of 4 mm, the size of the positioning grooves 211 is matched with the sliding of the positioning pull rod 36, and the positioning grooves 211 are processed by a precise milling process, so that the accuracy and stability are ensured. One end surface of the sliding block 25 is horizontally fixed with a clamping spring 26, the other end of the clamping spring 26 is fixed on the connecting plate 21, the spring material is selected to be silicon manganese steel, and the elastic force adjustment range is 10-20 N.

[0030] Reference Figure 4 As shown, the top of the clamping frame 24 is horizontally fixed with a clamping strip 241, and the outer wall of the clamping strip 241 is covered with a 2 mm thick silica gel soft pad 242, the silica gel material is selected to be a medical grade, has the characteristics of high temperature resistance and aging resistance, and can effectively protect the shell of the surge protector body 1 from being scratched when clamped. Figure 3 And Figure 4 As shown, the two sides of the surge protector body 1 are provided with grooves 11 with a width of 8 mm and a depth of 5 mm, the grooves 11 are matched with the clamping strip 241, the matching gap is 0.5 mm, the installation is stable and the disassembly is convenient.

[0031] The working principle of the utility model is as follows: when the assembled clamping piece 2 is assembled at the back of the surge protector body 1, the clamping frame 24 on both sides of the connecting plate 21 is horizontally slid in the sliding frame 23, the clamping spring 26 is deformed, then the surge protector body 1 is inserted between the clamping frames 24 on both sides, the clamping frame 24 is loosened under the action of the deformation force of the clamping spring 26, the clamping frame 24 is horizontally slid in the sliding frame 23, the clamping strip 241 is inserted into the grooves 11 on both sides of the surge protector body 1, then the through column 33 on one side of the hole frame 31 in the connecting piece 3 is inserted into the mounting hole of the power distribution cabinet, then the nut 35 is screwed on the bolt 34, the hole frame 31 is fixed on the power distribution cabinet, then the clamping piece 2 and the connecting piece 3 are assembled, the positioning pull rod 36 on both ends of the hole frame 31 is slid to deform the positioning spring 37, then the stud 32 on the hole frame 31 is screwed in the screw cylinder 22 of the connecting plate 21, then the clamping piece 2 and the connecting piece 3 are assembled, the positioning pull rod 36 is inserted into the positioning groove 211 at both ends of the connecting plate 21 under the action of the deformation force of the positioning spring 37, the clamping piece 2 and the connecting piece 3 are assembled, so that the guide rail is not needed, the surge protector body 1 is clamped and installed by the clamping piece 2, the connecting piece 3 is fixed on the power distribution cabinet, and the assembly of the surge protector body 1 on the power distribution cabinet is completed, so that the installation is convenient, the installation range of the surge protector body 1 is expanded, and the installation convenience is improved.

[0032] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application. Structures, devices and operation methods not specifically described and explained in the present application are implemented according to conventional means in the art, unless otherwise specified and limited.

Claims

1. A power distribution cabinet surge protector assembly, comprising: The utility model provides a surge protector, including the surge protector body (1), the clamping piece (2) and the connecting piece (3), the outside of the surge protector body (1) is clamped with the clamping piece (2), and the bottom end of the clamping piece (2) is equipped with the connecting piece (3), the clamping piece (2) includes the connecting plate (21) and the clamping frame (24), the middle part of the connecting plate (21) is vertically fixed with the screw cylinder (22), and the both sides of connecting plate (21) are symmetrically vertically fixed with the sliding frame (23) on both sides, the clamping frame (24) is provided with two symmetrically, and two clamping frames (24) are slidably assembled in the sliding frame (23) respectively, the end of the clamping frame (24) is fixed with the sliding block (25), and the sliding block (25) is slidably assembled with the sliding frame (23), the connecting piece (3) includes the hole frame (31), the hole frame (31) is arranged at the lower side of the connecting plate (21), and the top surface of the hole frame (31) is vertically fixed with the stud (32), the stud (32) on the hole frame (31) is threadedly assembled in the screw cylinder (22) of the connecting plate (21), and the rear end surface of the hole frame (31) is vertically fixed with the through column (33).

2. A surge protection device assembly for an electrical switchgear cabinet according to claim 1, characterized in that: The through column (33) penetrates the distribution cabinet wall and is provided with a bolt (34) on the outer end surface of the through column (33), and a nut (35) is threadedly assembled on the bolt (34).

3. A surge protection device assembly for an electrical switchgear cabinet according to claim 1, wherein: The both ends of the hole frame (31) are slidably inserted with the positioning pull rod (36), and the positioning spring (37) is sleeved on the outer portion of the positioning pull rod (36), and the both ends of the positioning spring (37) are fixed on the end of the positioning pull rod (36) and the end surface of the hole frame (31) respectively.

4. A surge protection device assembly for an electrical panel according to claim 2, wherein: The both ends of the connecting plate (21) are horizontally provided with the positioning slot (211), and the positioning slot (211) of the connecting plate (21) is slidably inserted with the positioning pull rod (36).

5. A surge protector assembly for an electrical distribution cabinet according to claim 1, wherein: One end surface of the sliding block (25) is horizontally fixed with the clamping spring (26), and the other end of the clamping spring (26) is fixed on the connecting plate (21).

6. A surge protector assembly for an electrical distribution cabinet according to claim 1, wherein: The top of the clamping frame (24) is horizontally fixed with the clamping strip (241), and the outer wall of the clamping strip (241) is fixed with the soft pad (242).

7. A surge protection device assembly for an electrical switchgear cabinet according to claim 6, wherein: The both sides of the surge protector body (1) are provided with the recess (11), and the recess (11) is clamped with the clamping strip (241).

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