Power supply rail insulation supporting device

Abstract

A power supply rail insulation supporting device comprises a metal installation base, an insulation core rod, a metal connecting base, an insulation umbrella skirt and a clamping jaw, the insulation core rod is composed of a large-diameter section and a small-diameter section, the metal installation base is connected to the large-diameter section in a sleeved and pressed mode, and the metal connecting base is connected to the small-diameter section in a sleeved and pressed mode. The insulating umbrella skirt coats the circumferential peripheries of the metal mounting seat, the insulating core and the metal connecting seat; the front end of the metal connecting seat is vertically and symmetrically provided with two limiting bosses; one side, far away from the conductor rail, of the inner end of the clamping jaw is provided with a limiting concave table; the clamping jaws are symmetrically and fixedly connected to the limiting bosses through bolts, and the limiting concave tables are symmetrically clamped to the opposite faces of the limiting bosses. According to the utility model, the insulating core rod is designed into a stepped structure with a large diameter of the fixed end and a small diameter of the cantilever end, so that the crimping area of the metal mounting seat and the insulating core rod is effectively increased, the binding force of the metal mounting seat and the insulating core rod is improved, and the bending resistance of a product is improved under a limited structural height.

Description

Technical Field

[0001] The utility model belongs to the technical field of urban rail transit, and in particular relates to an insulation support device for a power supply rail. Background Art

[0002] The power rail insulation support device is used for the installation support and electrical insulation of the power rail of urban rail transit. In the new urban rail transit mode, the vehicle clearance is generally small, especially for power supply systems such as straddle-type monorail, maglev and sky train. The installation space of the power rail insulation support device is severely limited, which brings difficulties to product design and production, and the mechanical and electrical performance are not easy to meet the requirements. With the demand for increased speed of new rail transit, higher mechanical performance requirements are put forward for the insulation support device, and the bending performance indicators of the existing power rail insulation support device are difficult to meet the requirements. In addition, the claws in the existing power rail insulation support device are directly fixed and connected by bolts. The weight of the conductive rail is mainly borne by the bolts, and the bolts are subject to large shear forces. Moreover, the claws are generally formed by a simple buckling connection between the claw body and the non-metallic wear-resistant block. The connection reliability is poor and it is easy to loosen and separate, which brings hidden dangers to the smooth sliding of the power rail. Utility Model Content

[0003] The utility model provides a power supply rail insulation support device to overcome the shortcomings of the prior art.

[0004] The technical scheme adopted by the utility model is: an insulating support device for a power supply rail, comprising a metal mounting seat, an insulating core rod, a metal connecting seat, an insulating shed and a clamping claw, wherein the insulating core rod is composed of a large diameter section and a small diameter section, the metal mounting seat is crimped on the large diameter section, the metal connecting seat is crimped on the small diameter section, and the insulating shed is coated on the circumferential periphery of the metal mounting seat, the insulating core rod and the metal connecting seat; the front end of the metal connecting seat is symmetrically provided with two limiting bosses at the upper and lower ends, and the inner end of the clamping claw is provided with a limiting concave platform away from the conductive rail; the clamping claw is symmetrically fixedly connected to the limiting bosses by bolts, and the limiting concave platforms are symmetrically clamped on the opposite surfaces of the limiting bosses.

[0005] The clamping claw is composed of a clamping claw body and a non-metallic wear-resistant clamping block, the limiting recess is located at the inner end of the clamping claw body away from the conductive rail, and the limiting recess is provided with a dovetail notch, the clamping plate is protruded from the side of the clamping claw body close to the conductive rail, and the clamping plate is provided with a positioning notch; the wear-resistant clamping block is provided with a contact rail clamping groove on the side close to the conductive rail and a dovetail boss on the side away from the conductive rail, a sink is provided on the outside of the wear-resistant clamping block, and a positioning boss is provided at the bottom of the sink; the clamping claw body and the wear-resistant clamping block are fixedly connected by the mutual engagement of the dovetail notch and the dovetail boss, and the mutual engagement of the positioning notch and the positioning boss.

[0006] The dovetail notches and dovetail bosses are arranged side by side in two opposite directions, and the positioning notches and positioning bosses are arranged side by side in two opposite directions.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] 1. The utility model designs the insulating core rod into a stepped structure with a large diameter at the fixed end and a small diameter at the cantilever end, thereby effectively increasing the crimping area between the metal mounting seat and the insulating core rod and improving the bonding force between the two, thereby improving the product's bending resistance under limited structural height.

[0009] 2. The claw body of the utility model and the non-metallic wear-resistant block are connected to each other through a wedge-shaped groove to form a reverse inverted cone structure. The connection is reliable and not easy to separate, which effectively avoids the hidden danger of loosening and separation of the non-metallic wear-resistant block under vibration conditions, ensuring smooth sliding of the power supply rail and safe line operation.

[0010] 3. The front of the metal connection seat of the utility model is provided with a boss, and the back of the claw is provided with a recessed platform. The lower claw cooperates with the boss through the recessed platform to transfer the weight of the power supply rail to the metal connection seat. The bolt connection is subjected to little shear force, thereby improving the reliability of the bolt connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a schematic cross-sectional view of the structure of the utility model;

[0013] Figure 3 , 4 It is a schematic diagram of the claw structure of the utility model. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-4 The utility model is described in detail with specific implementation modes.

[0015] A power rail insulation support device comprises a metal mounting seat 1, an insulating core rod 2, a metal connecting seat 3, an insulating shed 4 and a claw 5, wherein the insulating core rod 2 is composed of a large diameter section 2-1 and a small diameter section 2-2, the metal mounting seat 1 is crimped onto the large diameter section 2-1, the metal connecting seat 3 is crimped onto the small diameter section 2-2, and the insulating shed 4 covers the circumferential periphery of the metal mounting seat 1, the insulating core rod 2 and the metal connecting seat 3; the front end of the metal connecting seat 3 is symmetrically provided with two limiting bosses 3-1, and the inner end of the claw 5 is provided with a limiting recess 5-3 on the side away from the conductive rail 7; the claw 5 is symmetrically fixedly connected to the limiting boss 3-1 by bolts 6, and the limiting recess 5-3 is symmetrically clamped on the opposite surface of the limiting boss 3-1.

[0016] Further, the claw 5 is composed of a claw body 5-1 and a non-metallic wear-resistant block 5-2, the limiting recess 5-3 is located on the inner end of the claw body 5-1 away from the conductive rail 7, and the limiting recess 5-3 has a dovetail notch 5-1-1, the claw body 5-1 is protruding with a card plate 5-1-2 on the side close to the conductive rail 7, and the card plate 5-1-2 has a positioning notch 5-1-3; the wear-resistant block 5-2 is close to the conductive rail 7 It has a contact rail slot 5-2-2 and a dovetail boss 5-2-1 protruding from the side away from the conductive rail 7. A sink 5-2-3 is provided on the outside of the wear-resistant block 5-2, and a positioning boss 5-2-4 is provided at the bottom of the sink 5-2-3. The dovetail slot 5-1-1 and the dovetail boss 5-2-1 are mutually engaged, and the positioning slot 5-1-3 and the positioning boss 5-2-4 are mutually engaged to fix the claw body 5-1 and the wear-resistant block 5-2 in connection.

[0017] Preferably, two dovetail notches 5-1-1 and two dovetail bosses 5-2-1 are arranged side by side in a left-right direction, and two positioning notches 5-1-3 and two positioning bosses 5-2-4 are arranged side by side in a right-left direction.

[0018] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A power rail insulation support device, comprising a metal mounting seat (1), an insulating core rod (2), a metal connecting seat (3), an insulating shed (4) and a claw (5), characterized in that: The insulating core rod (2) is composed of a large diameter section (2-1) and a small diameter section (2-2); the metal mounting seat (1) is sleeved and crimped onto the large diameter section (2-1); the metal connecting seat (3) is sleeved and crimped onto the small diameter section (2-2); the insulating shed (4) covers the circumferential periphery of the metal mounting seat (1), the insulating core rod (2) and the metal connecting seat (3); the front end of the metal connecting seat (3) is symmetrically provided with two limiting bosses (3-1) in the upper and lower directions; the inner end of the clamping claw (5) is provided with a limiting recess (5-3) on the side away from the conductive rail (7); the clamping claw (5) is symmetrically fixedly connected to the limiting boss (3-1) by means of bolts (6), and the limiting recess (5-3) is symmetrically clamped on the opposite surface of the limiting boss (3-1).

2. The power rail insulation support device according to claim 1, characterized in that: The clamping claw (5) is composed of a clamping claw body (5-1) and a non-metallic wear-resistant clamping block (5-2); the limiting recess (5-3) is located at the inner end of the clamping claw body (5-1) away from the conductive rail (7), and the limiting recess (5-3) has a dovetail notch (5-1-1); a clamping plate (5-1-2) protrudes from the side of the clamping claw body (5-1) close to the conductive rail (7), and the clamping plate (5-1-2) has a positioning notch (5-1-3); the wear-resistant clamping block (5-2) is located on the side close to the conductive rail (7); The invention has a contact rail clamping groove (5-2-2), a dovetail boss (5-2-1) protruding on the side away from the conductive rail (7), a sink (5-2-3) is arranged on the outside of the wear-resistant clamping block (5-2), and a positioning boss (5-2-4) is arranged at the bottom of the sink (5-2-3); the dovetail notch (5-1-1) and the dovetail boss (5-2-1) are mutually engaged, and the positioning notch (5-1-3) and the positioning boss (5-2-4) are mutually engaged to fix the claw body (5-1) and the wear-resistant clamping block (5-2) in connection.

3. The power rail insulation support device according to claim 2, characterized in that: The dovetail notches (5-1-1) and dovetail bosses (5-2-1) are arranged side by side in two opposite directions, and the positioning notches (5-1-3) and positioning bosses (5-2-4) are arranged side by side in two opposite directions.

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