Bus clamp of low-voltage switch cabinet

Abstract

The utility model belongs to the technical field of low-voltage switch cabinet equipment, and particularly relates to a low-voltage switch cabinet bus clamp. Comprising a bottom plate, an upper bus clamp and a lower bus clamp, and the lower bus clamp is fixedly installed at the upper end part of the bottom plate; a plurality of grooves are formed in the upper end parts of the upper bus clamp and the lower bus clamp; a clamping plate is fixedly installed in each groove of the upper bus clamp and the lower bus clamp through a buffer assembly. A connecting rod is fixedly installed in the middle of the upper end of the lower bus clamp, a plurality of jacks are evenly distributed in the side end of the connecting rod, a through groove is formed in the upper end of the upper bus clamp, the connecting rod can penetrate through the through groove, and installation blocks are fixedly installed at the positions, located on the two sides of the through groove, of the upper end of the upper bus clamp. A through hole is formed in the side end of each mounting block, the through holes are matched with the inserting holes, and the inserting holes are provided with long screws used for fixing the connecting rods and the mounting blocks.

Description

Technical Field

[0001] This utility model belongs to the technical field of low-voltage switchgear equipment, specifically a low-voltage switchgear busbar clamp. Background Technology

[0002] In low-voltage switchgear, busbar clamps are used to secure busbars, ensuring their stability and safety during operation. Most existing busbar clamps use bolts or snap-fit ​​structures for fixing and installing busbars. However, bolt-fastened busbar clamps require specialized tools for disassembly and installation, making the process cumbersome, time-consuming, and inconvenient for maintenance and repair. While snap-fit ​​busbar clamps simplify installation to some extent, disassembly often requires significant external force, easily damaging the clamp and busbar. Furthermore, the snaps may loosen after prolonged use, affecting the busbar's securing effect. Therefore, there is an urgent need for a low-voltage switchgear busbar clamp that is easy to disassemble and install to solve the problems existing in current technologies. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this disclosure is to provide a low-voltage switchgear busbar clamp.

[0004] The objective of this disclosure can be achieved through the following technical solutions:

[0005] A low-voltage switchgear busbar clamp includes: a base plate, an upper busbar clamp, and a lower busbar clamp. The lower busbar clamp is fixedly installed on the upper end of the base plate. Multiple grooves are formed on the upper ends of both the upper and lower busbar clamps. A clamping plate is fixedly installed in each groove of both the upper and lower busbar clamps via a buffer assembly. A connecting rod is fixedly installed in the middle of the upper end of the lower busbar clamp. Multiple insertion holes are evenly distributed on the side end of the connecting rod. A through slot is formed on the upper end of the upper busbar clamp, allowing the connecting rod to pass through. Mounting blocks are fixedly installed on both sides of the through slot on the upper end of the upper busbar clamp. Each mounting block has a through hole on its side end, which is adapted to the insertion hole. The insertion hole is provided with a long screw for fixing the connecting rod and the mounting block.

[0006] Furthermore, the buffer assembly includes a buffer spring, a first telescopic rod, and a second telescopic rod. When the buffer assembly is installed at the lower end of the upper busbar clamp, both ends of the buffer spring are fixedly connected to the lower end of the upper busbar clamp and the upper end of the clamping plate, respectively. The upper end of the first telescopic rod is fixedly connected to the lower end of the upper busbar clamp, and the lower end of the second telescopic rod is fixedly connected to the upper end of the clamping plate. The end of the first telescopic rod away from the upper busbar clamp and the end of the second telescopic rod away from the clamping plate are sleeved together. When the buffer assembly is installed at the upper end of the lower busbar clamp, both ends of the buffer spring are fixedly connected to the upper end of the lower busbar clamp and the lower end of the clamping plate, respectively. The lower end of the first telescopic rod is fixedly connected to the upper end of the lower busbar clamp, and the upper end of the second telescopic rod is fixedly connected to the lower end of the clamping plate. The end of the first telescopic rod away from the lower busbar clamp and the end of the second telescopic rod away from the clamping plate are sleeved together. The buffer spring is located inside the second telescopic rod.

[0007] Furthermore, the inner diameter of the first telescopic rod is equal to the outer diameter of the second telescopic rod.

[0008] Furthermore, a cushioning pad is fixedly installed at the end of each clamping plate away from the cushioning assembly.

[0009] Furthermore, the upper end of the upper clamping plate is provided with round holes on both sides of the through groove, and the upper end of the lower clamping plate is fixedly installed with connecting posts at positions aligned with the round holes. The side end of the connecting post is provided with a thread, and the upper end of the upper clamping plate is provided with a locking member that is threadedly connected to the connecting post.

[0010] Furthermore, the base plate, upper busbar clamp, and lower busbar clamp are made of high-strength insulating materials such as nylon and ABS engineering plastics.

[0011] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0012] Fixed connection: refers to a connection in which parts or components are fixed in place and there is no relative movement. It is divided into two types: detachable connection and non-detachable connection.

[0013] (1) Detachable connection: The components are fixed together using screws, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of the bolts, keys, wedges) and properly tightened.

[0014] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0015] The beneficial effects of this disclosure are as follows: When using this device to clamp the busbar, the busbar is placed on the upper end of the clamping plate of the lower busbar clamp, and then the upper busbar clamp is moved downward along the connecting rod so that the end of the clamping plate is in contact with the busbar; the insertion hole on the side end of the connecting rod is aligned with the through hole on the side end of the mounting block, and then the long screw is passed through the insertion hole and the through hole in sequence to fix the upper busbar clamp and the lower busbar clamp together, thereby fixing the clamping plate and the busbar once, and then fixing the clamping plate and the busbar a second time by the cooperation of the connecting column and the locking part. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall device according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the overall device according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the busbar clamp in an embodiment of this utility model.

[0020] Reference numerals: 1. Base plate; 2. Upper busbar clamp; 3. Lower busbar clamp; 4. Groove; 5. Buffer assembly; 6. Clamping plate; 7. Connecting rod; 8. Insertion hole; 9. Through slot; 10. Mounting block; 11. Through hole; 12. Long screw; 13. Buffer spring; 14. First telescopic rod; 15. Second telescopic rod; 16. Buffer pad; 17. Round hole; 18. Connecting post; 19. Locking element. Detailed Implementation

[0021] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0022] A type of low-voltage switchgear busbar clamp, such as Figures 1-3As shown, it includes: a base plate 1, an upper busbar clamp 2, and a lower busbar clamp 3. The lower busbar clamp 3 is fixedly installed on the upper end of the base plate 1. The upper ends of the upper busbar clamp 2 and the lower busbar clamp 3 are provided with multiple grooves 4. Each groove 4 of the upper busbar clamp 2 and the lower busbar clamp 3 is fixedly installed with a clamping plate 6 by a buffer assembly 5. A connecting rod 7 is fixedly installed in the middle part of the upper end of the lower busbar clamp 3. Multiple insertion holes 8 are evenly distributed on the side end of the connecting rod 7. The upper end of the upper busbar clamp is provided with a through groove 9, which allows the connecting rod 7 to pass through. Mounting blocks 10 are fixedly installed on both sides of the upper end of the upper busbar clamp located in the through groove 9. Each mounting block 10 is provided with a through hole 11 on its side end. The through hole 11 is adapted to the insertion hole 8. The insertion hole 8 is provided with a long screw 12 for fixing the connecting rod 7 and the mounting block 10. When using the device, the busbar is placed on the upper end of the clamping plate 6 of the lower busbar clamp 3, and then the upper busbar clamp 2 is moved downward along the connecting rod 7 so that the end of the clamping plate 6 is in contact with the busbar. At this time, the buffer assembly 5 will be squeezed and contracted. After the buffer assembly 5 contracts, the insertion hole 8 on the side of the connecting rod 7 is aligned with the through hole 11 on the side of the mounting block 10, and then the long screw 12 is passed through the insertion hole 8 and the through hole 11 in sequence to fix the upper busbar clamp 2 and the lower busbar clamp 3 together. At this time, the busbar is fixed between the two.

[0023] Further, the buffer assembly 5 includes a buffer spring 13, a first telescopic rod 14, and a second telescopic rod 15. When the buffer assembly 5 is installed at the lower end of the upper busbar clamp 2, both ends of the buffer spring 13 are fixedly connected to the lower end of the upper busbar clamp 2 and the upper end of the clamping plate 6, respectively. The upper end of the first telescopic rod 14 is fixedly connected to the lower end of the upper busbar clamp 2, and the lower end of the second telescopic rod 15 is fixedly connected to the upper end of the clamping plate 6. The end of the first telescopic rod 14 away from the upper busbar clamp 2 and the end of the second telescopic rod 15 away from the clamping plate 6 are sleeved together. When the buffer assembly 5 is installed on the upper end of the lower busbar clamp 3, both ends of the buffer spring 13 are fixedly connected to the upper end of the lower busbar clamp 3 and the lower end of the clamping plate 6, respectively. The lower end of the first telescopic rod 14 is fixedly connected to the upper end of the lower busbar clamp 3, and the upper end of the second telescopic rod 15 is fixedly connected to the lower end of the clamping plate 6. The end of the first telescopic rod 14 away from the lower busbar clamp 3 and the end of the second telescopic rod 15 away from the clamping plate 6 are sleeved together. The buffer spring 13 is located inside the second telescopic rod 15. The inner diameter of the first telescopic rod 14 is equal to the outer diameter of the second telescopic rod 15. The buffer assembly 5 is designed to make the busbar clamp device suitable for busbars of different thicknesses. The buffer spring 13 serves to buffer and contract. The first telescopic rod 14 and the second telescopic rod 15 allow the spring to extend and retract only vertically.

[0024] As a preferred embodiment of this utility model, a buffer pad 16 is fixedly installed at the end of each clamping plate 6 away from the buffer assembly 5.

[0025] In a preferred embodiment of this utility model, the upper clamping plate 6 has circular holes 17 on both sides of the through groove 9 at its upper end. Connecting posts 18 are fixedly installed at positions on the upper end of the lower clamping plate 6 opposite to the circular holes 17. The connecting posts 18 have threads on their sides, and the upper clamping plate 6 has a locking member 19 that is threadedly connected to the connecting posts 18 at its upper end. The connecting posts 18 and the locking member 19 are used for secondary locking of the upper busbar clamp 2, the lower busbar clamp, and the busbar located between them. The connecting posts 18 and the locking member 19 are threadedly connected, and the condition for the combined thread locking is that the thread helix angle is less than the equivalent friction angle of the helical pair.

[0026] As a preferred embodiment of this utility model, the base plate 1, upper busbar clamp 2, and lower busbar clamp 3 are made of high-strength insulating materials such as nylon and ABS engineering plastics. The use of high-strength insulating materials for the base plate 1, upper busbar clamp 2, and lower busbar clamp 3 prevents the formation of conductive paths between the busbar and the cabinet or other components, thus avoiding short-circuit faults. The insulating material effectively isolates the busbar from the outside environment, ensuring that current is transmitted only within the busbar along a predetermined path, maintaining the normal operation of the electrical system. For example, in humid environments, ordinary metal busbar clamps are prone to becoming conductive due to surface condensation, while the insulating material avoids this. The insulating material also prevents leakage, resists electrical aging, and resists chemical corrosion.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A low voltage switchgear busbar clamp, characterized in that, include: The base plate (1), upper busbar clamp (2), and lower busbar clamp (3) are provided. The lower busbar clamp (3) is fixedly installed on the upper end of the base plate (1). The upper ends of the upper busbar clamp (2) and the lower busbar clamp (3) are provided with multiple grooves (4). Each groove (4) of the upper busbar clamp (2) and the lower busbar clamp (3) is fixedly installed with a clamping plate (6) by a buffer assembly (5). A connecting rod (7) is fixedly installed in the middle part of the upper end of the lower busbar clamp (3). The side ends of the connecting rod (7) are all Multiple insertion holes (8) are evenly distributed. The upper end of the upper busbar clamp is provided with a through groove (9) through which the connecting rod (7) can pass. Mounting blocks (10) are fixedly installed on both sides of the upper end of the upper busbar clamp located in the through groove (9). Each mounting block (10) is provided with a through hole (11) on its side end. The through hole (11) is adapted to the insertion hole (8). The insertion hole (8) is provided with a long screw (12) for fixing the connecting rod (7) and the mounting block (10).

2. A busbar clamp for a low voltage switchgear cabinet according to claim 1, characterized in that The buffer assembly (5) includes a buffer spring (13), a first telescopic rod (14), and a second telescopic rod (15). When the buffer assembly (5) is installed at the lower end of the upper busbar clamp (2), the two ends of the buffer spring (13) are fixedly connected to the lower end of the upper busbar clamp (2) and the upper end of the clamping plate (6), respectively. The upper end of the first telescopic rod (14) is fixedly connected to the lower end of the upper busbar clamp (2), and the lower end of the second telescopic rod (15) is fixedly connected to the upper end of the clamping plate (6). The end of the first telescopic rod (14) away from the upper busbar clamp (2) and the end of the second telescopic rod (15) away from the clamping plate are respectively. (6) One end is sleeved; When the buffer assembly (5) is installed on the upper end of the lower busbar clamp (3), the two ends of the buffer spring (13) are fixedly connected to the upper end of the lower busbar clamp (3) and the lower end of the clamping plate (6) respectively. The lower end of the first telescopic rod (14) is fixedly connected to the upper end of the lower busbar clamp (3), and the upper end of the second telescopic rod (15) is fixedly connected to the lower end of the clamping plate (6). The end of the first telescopic rod (14) away from the lower busbar clamp (3) and the end of the second telescopic rod (15) away from the clamping plate (6) are sleeved; The buffer spring (13) is located inside the second telescopic rod (15).

3. A busbar clamp for a low voltage switchgear cabinet according to claim 2, characterized in that The inner diameter of the first telescopic rod (14) is equal to the outer diameter of the second telescopic rod (15).

4. A busbar clamp for a low voltage switchgear according to claim 1, characterized in that Each of the clamping plates (6) has a cushioning pad (16) fixedly installed at the end away from the cushioning assembly (5).

5. A busbar clamp for a low voltage switchgear according to claim 1, characterized in that The upper clamping plate (6) has round holes (17) on both sides of the through groove (9) at its upper end. The lower clamping plate (6) has connecting posts (18) fixedly installed at the positions of the upper end of the lower clamping plate (6) and the round holes (17). The connecting posts (18) have threads on their sides. The upper clamping plate (6) has a locking member (19) that is threaded to the connecting posts (18) at its upper end.

6. A busbar clamp for a low voltage switchgear according to claim 1, characterized in that The base plate (1), upper busbar clamp (2) and lower busbar clamp (3) are made of high-strength insulating materials such as nylon and ABS engineering plastics.

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