A C-type contact rail sectional insulation connector

Abstract

A C type contact rail section insulation connector, including insulation slide rail, insulation support plate and T type connecting plate, the insulation slide rail is fixed on the top of the insulation support plate, a pair of T type connecting plate's inner end is fixedly connected in the lower part of the two ends of the insulation support plate, and the outer end is inserted into the inner cavity of the C type contact rail and is fixedly connected with the C type contact rail.The insulation slide rail and the insulation support plate are laminated structure, which reduces the amount of polytetrafluoroethylene used in manufacturing insulation slide rail, reduces the cost, and the insulation support plate is made of epoxy glass steel, which increases the rigidity of the product and improves the stability of the rail shoe cooperation when the collector shoe passes.

Description

Technical Field

[0001] This utility model belongs to the technical field of rail transit contact rail power supply system, and particularly relates to a C-type contact rail segmented insulation connector. Background Technology

[0002] Segment insulators are a crucial component of urban rail transit contact rail power supply systems. They provide electrical insulation between contact rails in different power supply sections, ensuring that during construction or maintenance outages, power is cut off in the maintenance section without affecting other sections, thus minimizing the outage area. They also ensure a smooth transition for the current collector shoe at this point. The closest existing technology is the segment insulator for straddle-type monorail steel-aluminum composite contact rails (CN209395632U). Its insulated slide rail is a single-piece structure, machined from PTFE sheet and connected to the contact rail via an aluminum alloy inner clamp. Due to the poor rigidity of PTFE and the requirement for it to be level with the contact rail, the insulated slide rail is typically quite thick, resulting in significant machining operations. Furthermore, the high price of PTFE contributes to the high product cost. Summary of the Invention

[0003] This invention provides a C-type contact rail segmented insulation connector to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by this utility model is: a C-type contact rail segmented insulating connector, including an insulating slide rail, an insulating support plate and a T-type connecting plate. The insulating slide rail is fixed above the insulating support plate with equal length. The inner ends of a pair of T-type connecting plates are symmetrically fixedly connected to the lower ends of the insulating support plate, and the outer ends extend into the inner cavity of the C-type contact rail that it mates with and are fixedly connected to the C-type contact rail.

[0005] The top surface of the insulated slide rail is evenly distributed with inclined grooves, and the bottom surface has T-shaped grooves at both ends along the line direction; the bottom surface of the insulated support plate has grooves symmetrically arranged at both ends along the line direction, and the inner end of the T-shaped connecting plate has a recessed platform; the groove has a through hole, the recessed platform has a through hole, and the outer end of the T-shaped connecting plate has a threaded hole. The recessed platform is inserted into the groove, and a bolt pair is installed in the T-slot. The bolt pair passes through the through hole and the through hole in sequence to fix the insulating slide rail, the insulating support plate and the T-shaped connecting plate together. The connecting screw is inserted from the bottom of the C-shaped contact rail and connected to the threaded hole to fix the outer end of the T-shaped connecting plate to the C-shaped contact rail.

[0006] The T-slot is fitted with a U-shaped anti-rotation groove, and the bolt head of the bolt pair is fitted into the U-shaped anti-rotation groove.

[0007] The insulating slide rail has a first drainage groove on both sides of the middle section, and a second drainage groove connected to the first drainage groove is provided in the middle of the bottom surface of the insulating slide rail.

[0008] The insulated slide rail is made of polytetrafluoroethylene profile, the insulated support plate is made of epoxy fiberglass profile, and the T-shaped connecting plate is made of aluminum alloy profile.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The insulating slide rail and insulating support plate of this utility model have a stacked structure, which reduces the amount of polytetrafluoroethylene used in the manufacture of the insulating slide rail, thereby reducing the cost. In addition, the insulating support plate is made of epoxy fiberglass, which increases the rigidity of the product and improves the stability of the track shoe when the current collector shoe passes through.

[0010] 2. This utility model has a modular structure, which makes it easy to replace the insulated slide rail after it wears out, thus reducing the later operation and maintenance costs.

[0011] 3. This utility model adopts a T-shaped connecting plate that is directly inserted into the inner cavity of the C-shaped contact rail and connected by connecting screws. The structure is simple and the connection is stable and reliable.

[0012] 4. This utility model incorporates a U-shaped anti-rotation groove within the T-shaped groove, ensuring reliable connection and easy disassembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the utility model in use; Figure 3 yes Figure 2 Partial sectional view; Figure 4 yes Figure 2 Cross-sectional view at point AA; Figure 5 yes Figure 2 Cross-sectional view at point BB; Figure 6 , 7 This is a schematic diagram of the insulated slide rail structure of this utility model; Figure 8 This is a schematic diagram of the insulating support plate structure of this utility model; Figure 9 This is a schematic diagram of the T-shaped connecting plate structure of this utility model; Figure 10 This is a schematic diagram of the U-shaped anti-rotation groove structure of this utility model. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-10 The present invention will be described in detail with reference to specific embodiments.

[0015] A C-type contact rail segmented insulated connector includes an insulated slide rail 1, an insulated support plate 2, and a T-type connecting plate 3. The insulated slide rail 1 is fixedly mounted on the upper part of the insulated support plate 2 with equal length. The inner ends of a pair of T-type connecting plates 3 are symmetrically fixedly connected to the lower ends of the two ends of the insulated support plate 2, and the outer ends extend into the inner cavity of the C-type contact rail 5 that it abuts and are fixedly connected to the C-type contact rail 5.

[0016] In one embodiment, the top surface of the insulating slide rail 1 is evenly provided with inclined grooves 1-1, and the two ends of the bottom surface are provided with T-shaped grooves 1-2 along the line direction; the two ends of the bottom surface of the insulating support plate 2 are symmetrically provided with grooves 2-2 along the line direction; the inner end of the T-shaped connecting plate 3 has a recessed platform 3-3; the groove 2-2 is provided with a through hole 2-1, the recessed platform 3-3 is provided with a through hole 3-1, and the outer end of the T-shaped connecting plate 3 is provided with a threaded hole 3-2; The recessed platform 3-3 is inserted into the groove 2-2. A bolt pair 4 is fitted into the T-slot 1-2, and the bolt pair 4 passes sequentially through the through hole 2-1 and the through hole 3-1 to fix the insulating slide rail 1, the insulating support plate 2, and the T-shaped connecting plate 3 together. A connecting screw 6 is inserted from the bottom of the C-type contact rail 5 and connected to the threaded hole 3-2, thus fixing the outer end of the T-shaped connecting plate 3 to the C-type contact rail 5. The inclined groove 1-1 prevents conductive particles adhering to the working surface of the rail from forming a path, thus preventing insulation flashover and electrical leakage risks.

[0017] In use, the two ends of the insulated slide rail 1 are connected to the C-type contact rail 5, the threaded hole 3-2 end of the T-type connecting plate 3 is inserted into the inner cavity of the C-type contact rail 5, and the connecting screw 6 passes through the bottom of the C-type contact rail 5 from bottom to top and is threadedly connected to the threaded hole 3-2.

[0018] In one embodiment, the insulating slide rail 1 has a first drainage groove 1-3 on both sides of the middle part, and a second drainage groove 1-4 communicating with the first drainage groove 1-3 is provided in the middle of the bottom surface of the insulating slide rail 1.

[0019] In one embodiment, the insulating slide rail 1 is made of polytetrafluoroethylene (PTFE). PTFE has high resistance to tracking, electro-corrosion, and wear, and also exhibits outstanding self-cleaning and high lubricity, ensuring smooth high-speed passage of the vehicle's current collector shoe. The insulating support plate 2 is made of epoxy fiberglass, possessing both good insulation and rigidity, increasing the rigidity of the segmented connector and improving the stability of the current collector shoe's passage through the rail shoe. The T-shaped connecting plate 3 is made of aluminum alloy. To prevent loosening of the bolt set 4 and connecting screw 6 during use, double-layered washers 8 are fitted on the bolt set 4 and connecting screw 6 to ensure reliable connection.

[0020] In one embodiment, since the PTFE insulated slide rail is relatively soft, a U-shaped anti-rotation groove 7 is embedded in the T-slot 1-2 to prevent the head of the bolt assembly 4 from rotating within the T-slot 1-2. The bolt head of the bolt assembly 4 is fitted into the U-shaped anti-rotation groove 7. After passing through the U-shaped anti-rotation groove 7, through hole 2-1, and through hole 3-1, the bolt assembly 4 will fix the insulated slide rail 1, the insulated support plate 2, and the T-shaped connecting plate 3 together. The U-shaped anti-rotation groove 7 is a metal part, preferably a stainless steel U-shaped anti-rotation groove 7.

[0021] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Therefore, all equivalent variations made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A C-type contact rail segmented insulated connector, characterized in that: It includes an insulated slide rail (1), an insulated support plate (2) and a T-shaped connecting plate (3). The insulated slide rail (1) is fixed above the insulated support plate (2) with equal length. The inner ends of a pair of T-shaped connecting plates (3) are symmetrically fixed to the lower ends of the insulated support plate (2), and the outer ends extend into the inner cavity of the C-shaped contact rail (5) that it docks with and are fixedly connected to the C-shaped contact rail (5).

2. A C-type contact rail segmented insulation connector according to claim 1, characterized in that: The top surface of the insulating slide rail (1) is evenly distributed with inclined grooves (1-1), and the bottom surface has T-shaped grooves (1-2) at both ends along the line direction; the bottom surface of the insulating support plate (2) has grooves (2-2) symmetrically arranged at both ends along the line direction, and the inner end of the T-shaped connecting plate (3) has a recessed platform (3-3); the groove (2-2) has a through hole (2-1), the recessed platform (3-3) has a through hole (3-1), and the outer end of the T-shaped connecting plate (3) has a threaded hole (3-2). The recessed platform (3-3) is inserted into the groove (2-2), and the T-slot (1-2) is fitted with a bolt pair (4). The bolt pair (4) passes through the through hole (2-1) and the through hole (3-1) in sequence to fix the insulating slide rail (1), the insulating support plate (2) and the T-shaped connecting plate (3) together. The connecting screw (6) is inserted from the bottom of the C-shaped contact rail (5) and connected to the threaded hole (3-2) to fix the outer end of the T-shaped connecting plate (3) to the C-shaped contact rail (5).

3. A C-type contact rail segmented insulation connector according to claim 2, characterized in that: The T-slot (1-2) is fitted with a U-shaped anti-rotation groove (7), and the bolt head of the bolt pair (4) is fitted into the U-shaped anti-rotation groove (7).

4. A C-type contact rail segmented insulation connector according to claim 1, 2, or 3, characterized in that: The insulating slide rail (1) has a first drainage groove (1-3) on both sides of the middle part, and a second drainage groove (1-4) connected to the first drainage groove (1-3) is provided in the middle of the bottom surface of the insulating slide rail (1).

5. A C-type contact rail segmented insulation connector according to claim 4, characterized in that: The insulated slide rail (1) is made of polytetrafluoroethylene, the insulated support plate (2) is made of epoxy fiberglass, and the T-shaped connecting plate (3) is made of aluminum alloy.

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