Insulation connector for composite material cantilever device of overhead line system

Abstract

The utility model provides an overhead line system composite material cantilever device insulation connector comprising a first insulation double-lug assembly, a second insulation double-lug assembly detachably connected with the first insulation double-lug assembly, and a first locking assembly for locking the first insulation double-lug assembly and the second insulation double-lug assembly. A gap for insertion of a cantilever is formed between the first insulating double-lug assembly and the second insulating double-lug assembly, the second insulating double-lug assembly is provided with a matching through groove, and the inner wall of the matching through groove is provided with a matching through hole; the second locking assembly and the third locking assembly are arranged on the cantilever connecting pin shaft. By adopting the structure, the cantilever connecting pin shaft is fixed by adopting a double-locking structure. Connection is simpler, the angle is freer, and the weight is lighter. The risk of partial discharge of the composite material cantilever device of the overhead line system can be avoided, and the power supply safety and reliability of the overhead line system of the electrified railway are improved.

Description

Technical Field

[0001] This utility model relates to rail transit, specifically to an insulating connector for a catenary composite material cantilever device. Background Technology

[0002] In existing catenary composite insulated cantilever arm systems, metal connectors are used for connections between components. Due to the good insulation properties of the composite material itself, the potential at the intersection of the metal connector and the insulated cantilever arm increases significantly. The closer to the high-voltage metal electrode of the catenary, the higher the potential. Potential differences between nearby metal connectors can easily lead to partial discharge, affecting the safety of the catenary power supply. Furthermore, when using metal connectors, the matching composite support rods have clamps at both ends. Adjusting the support rod position interferes with the metal connectors, preventing the support rod from rotating beyond a certain angle, limiting its adjustment range and affecting the static structural stability of the composite insulated cantilever arm. Therefore, there is an urgent need for a connector that does not generate discharge, does not require additional clamps at both ends of the connecting rod, allowing for a larger rotation angle between components, and features a double-locking structure to enhance connection strength. Utility Model Content

[0003] To overcome the existing technical problems, this utility model provides an insulating connector for a catenary composite material cantilever device. This connector eliminates the need for additional pipe clamps to connect the various structures, allows for greater adjustment angles, and features a double locking structure to enhance connection strength.

[0004] The present invention adopts the following technical solution.

[0005] An insulating connector for a catenary composite material cantilever arm device includes: a first insulating double-ear assembly, a second insulating double-ear assembly detachably connected to the first insulating double-ear assembly, and a first locking assembly for locking the first insulating double-ear assembly and the second insulating double-ear assembly. There is a gap between the first insulating double-ear assembly and the second insulating double-ear assembly for inserting a composite material cantilever arm rod. The second insulating double-ear assembly is provided with a mating through groove, and the inner wall of the mating through groove is provided with a mating through hole. The connector also includes a cantilever arm connecting pin inserted into the mating through hole, and a second locking assembly and a third locking assembly disposed on the cantilever arm connecting pin.

[0006] As a further improvement of this utility model, the wrist arm connecting pin is a bolt with a hinged hole, the second locking component is a first nut, the bolt with the hinged hole has a first locking through hole on the unlocking trajectory of the first nut, and the third locking component is a cotter pin inserted into the first locking through hole.

[0007] As a further improvement of this utility model, both the first insulating double ear assembly and the second insulating double ear assembly are provided with a second locking through hole. The second insulating double ear assembly is provided with a locking groove corresponding to the second locking through hole. The first locking assembly includes a first bolt with its head located in the locking groove and a second nut.

[0008] As a further improvement of this utility model, a U-shaped washer is provided between the first bolt and the second insulating double ear assembly, and the width of the washer is equal to the width of the locking groove.

[0009] As a further improvement of this utility model, the gasket includes a base and protrusions integrally disposed on both sides of the base, the distance between the opposite surfaces of the two protrusions being equal to the width of the head of the first bolt.

[0010] As a further improvement of this utility model, a bushing is provided between the first bolt and the second insulating double-ear assembly.

[0011] The beneficial effects of this utility model are as follows: When the original metal connectors had a 35mm gap, discharge would occur in heavily polluted environments. However, by using an insulated connector, the two parts are tightly fitted together, preventing discharge and reducing safety risks during train operation. Since the composite material support for the cantilever arm can be directly connected via the cantilever arm connecting pin, no additional pipe clamps are needed, reducing the connection structure. To further improve connection strength and prevent loosening and detachment during long-term operation, the cantilever arm connecting pin adopts a double-locking structure. The connection between the first and second insulated double-ear assemblies is also achieved through a double-locking structure. Combined with the through-slot design and the reduced pipe clamps, the rotation angle of the cantilever arm support connected to the cantilever arm connecting pin can be further improved. The connection is simpler, and the angle is more flexible. Using composite materials reduces the weight of the connector, lowers the labor intensity of operators, and improves work efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the 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.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0015] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0016] Figure 4 This is a schematic diagram of the structure of this utility model in actual use.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1-First insulating double-ear assembly, 11-Second locking through hole, 12-Locking groove, 13-First bolt, 14-Second nut, 15-Washer, 16-Bushing, 151-Base, 152-Protrusion, 2-Second insulating double-ear assembly, 3-First locking assembly, 4-Matching through groove, 41-Matching through hole, 42-Wrist arm connecting pin, 43-Second locking assembly, 44-Third locking assembly. Detailed Implementation

[0019] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0020] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Reference Figures 1 to 4 As can be seen, an insulating connector for a contact wire composite material cantilever arm device includes: a first insulating double-ear assembly 1, a second insulating double-ear assembly 2 detachably connected to the first insulating double-ear assembly 1, and a first locking assembly 3 for locking the first insulating double-ear assembly 1 and the second insulating double-ear assembly 2. There is a gap between the first insulating double-ear assembly 1 and the second insulating double-ear assembly 2 for inserting a composite material cantilever arm rod. The second insulating double-ear assembly 2 is provided with a mating through groove 4, and the inner wall of the mating through groove 4 is provided with a mating through hole 41. It also includes a cantilever arm connecting pin 42 inserted into the mating through hole 41, and a second locking assembly 43 and a third locking assembly 44 provided on the cantilever arm connecting pin 42.

[0022] Specifically, the composite material refers to fiber-reinforced thermosetting resin composite material or fiber-reinforced thermoplastic resin composite material. Since other cantilever arm supports can be directly connected via the cantilever arm connecting pin 42, no additional pipe clamps are needed for connection, reducing the connection structure. To further improve connection strength and prevent loosening and detachment during long-term operation, the connection between the first insulating double-ear assembly 1 and the second insulating double-ear assembly 2 adopts a double-locking structure, and the cantilever arm connecting pin 42 is also connected using a double-locking structure. Combined with the through slot 4 and the reduced pipe clamps, the rotation angle of the cantilever arm connected to the cantilever arm connecting pin 42 can be further improved. The connection is simpler, the angle is more flexible, and the use of an insulating structure can prevent discharge, reducing the risk of safety accidents during train operation.

[0023] As a further improvement of this utility model, the wrist arm connecting pin 42 is a bolt for hinged holes, the second locking component 43 is a first nut, the bolt for hinged holes is provided with a first locking through hole on the unlocking trajectory of the first nut, and the third locking component 44 is a cotter pin inserted into the first locking through hole.

[0024] The bolts used have reamed holes, with threads at the front end and no threads at the rear end. The rear end is used to connect to other cantilever arms, while the front end is used for fixation. Since the connected cantilever arms may vibrate and loosen the first nut during long-term rotation, the cotter pin is used to prevent the first nut from falling off directly, which could lead to instability of the entire cantilever arm system.

[0025] As a further improvement of this utility model, both the first insulating double ear assembly 1 and the second insulating double ear assembly 2 are provided with a second locking through hole 11. The second insulating double ear assembly 2 is provided with a locking groove 12 corresponding to the second locking through hole 11. The first locking assembly 3 includes a first bolt 13 with its head located in the locking groove 12, and a second nut 14.

[0026] By placing the head of the first bolt 13 within the locking groove 12, the rotation of the first bolt 13 can be restricted by the inner wall of the locking groove 12, thereby improving the stability of the connection. Specifically, the first locking assembly 3 has two sets of first bolts 13, with two bolts in each set, and the two first bolts 13 in the same set are connected to an integral bolt washer.

[0027] In one specific embodiment of this utility model, a U-shaped washer 15 is provided between the first bolt 13 and the second insulating double ear assembly 2, and the width of the washer 15 is equal to the width of the locking groove 12.

[0028] The width of the gasket 15 is equal to the width of the locking groove 12, which can restrict the rotation of the gasket 15 and further reduce the possibility of loosening.

[0029] As a further improvement of this utility model, the gasket 15 includes a base 151 and protrusions 152 integrally disposed on both sides of the base 151, the distance between the opposite surfaces of the two protrusions 152 is equal to the width of the head of the first bolt 13.

[0030] Since the width of the washer 15 is equal to the width of the locking groove 12, the rotation of the washer 15 can be directly locked. The width of the head of the first bolt 13 is equal to the distance between the surfaces of the protrusion 152 on the opposite side, thereby directly locking the rotation of the first bolt 13 and reducing the rotation of the first bolt 13.

[0031] A bushing 16 is provided between the first bolt 13 and the second insulating double-ear assembly 2. It serves as a transition for connecting the first bolt 13 and the second insulating double-ear assembly 2.

[0032] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An overhead line composite arm device insulator connector, characterized in that, include: The first insulating double-ear assembly (1), and the second insulating double-ear assembly (2) detachably connected to the first insulating double-ear assembly (1), and the first locking assembly (3) locking the first insulating double-ear assembly (1) and the second insulating double-ear assembly (2), having a gap between the first insulating double-ear assembly (1) and the second insulating double-ear assembly (2) for inserting a composite material carpenter arm, the second insulating double-ear assembly (2) having a mating through groove (4), the inner wall of the mating through groove (4) having a mating through hole (41), and also including a carpenter arm connecting pin (42) inserted in the mating through hole (41), and a second locking assembly (43) and a third locking assembly (44) disposed on the carpenter arm connecting pin (42).

2. An overhead line composite insulator connector according to claim 1, wherein The wrist arm connecting pin (42) is a bolt for hinged holes, the second locking component (43) is a first nut, the bolt for hinged holes has a first locking through hole on the unlocking trajectory of the first nut, and the third locking component (44) is a cotter pin inserted into the first locking through hole.

3. An overhead line composite insulator connector for a catenary composite insulator arm assembly according to claim 1, wherein, The first insulating double ear assembly (1) and the second insulating double ear assembly (2) are both provided with a second locking through hole (11). The second insulating double ear assembly (2) is provided with a locking groove (12) corresponding to the second locking through hole (11). The first locking assembly (3) includes a first bolt (13) with its head located in the locking groove (12) and a second nut (14).

4. An overhead line composite insulator connector according to claim 3, wherein A U-shaped washer (15) is provided between the first bolt (13) and the second insulating double ear assembly (2), the width of which is equal to the width of the locking groove (12).

5. An overhead line composite insulator connector for a catenary composite insulator arm arrangement according to claim 4, characterized in that The gasket (15) includes a base (151) and protrusions (152) integrally disposed on both sides of the base (151), the distance between the opposite surfaces of the two protrusions (152) being equal to the width of the head of the first bolt (13).

6. An overhead line composite insulator connector for a catenary composite insulator arm assembly according to claim 3, wherein, A bushing (16) is provided between the first bolt (13) and the second insulating double ear assembly (2).

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