Small-space adjustable insulation support

Abstract

An adjustable insulating bracket for small spaces includes an insulating base and an insulating bracket. The lower outer side of the vertical end of the insulating base is provided with an insulating skirt. The insulating bracket is fixed to the upper outer side of the vertical end of the insulating base by a horizontally arranged bolt pair passing through an elongated hole on the vertical end of the insulating base. The insulating bracket has insulating skirts on both sides, and insulating claws one and two are positioned opposite each other on the top of the insulating bracket, clamping a power supply rail. This utility model overcomes the shortcomings of existing technologies.

Description

Technical Field

[0001] This utility model belongs to the field of urban rail transit power supply technology, and in particular relates to a small-space adjustable insulating bracket. Background Technology

[0002] Insulated rail supports are used to erect power supply rails for urban rail transit. They must not only possess sufficient mechanical strength and electrical insulation performance, but also meet installation requirements under specific clearance conditions. With the diversification of power supply modes in urban rail transit, installation spaces vary, placing higher demands on the adjustability of the power supply rail installation position to adapt to different clearance requirements. Currently, in commonly used top-contact current supply methods, the insulating support components of the power supply rail mostly adopt integral insulating supports, which are difficult to flexibly address the diversity of on-site installation interfaces.

[0003] Due to clearance constraints, some installation locations require direct connection to the civil engineering foundation, resulting in limited installation space and making it difficult to meet the installation requirements for DC1500V electrical performance. Therefore, it is necessary to develop an adjustable insulation bracket suitable for small spaces to meet the installation requirements for DC1500V electrical performance, effectively reduce the variety of insulation bracket specifications, and improve on-site adaptability and installation efficiency. Utility Model Content

[0004] This invention provides a small-space adjustable insulating bracket to overcome the shortcomings of the prior art.

[0005] The technical solution adopted by this utility model is as follows: a small space adjustable insulating bracket, including an insulating base and an insulating bracket. The lower part of the outer side of the vertical end of the insulating base is provided with an insulating skirt. The insulating bracket is fixed to the upper part of the outer side of the vertical end of the insulating base by a horizontally arranged bolt pair passing through the elongated hole on the vertical end of the insulating base. The insulating bracket is provided with insulating skirts on both sides. The top of the insulating bracket is provided with insulating claws one and two opposite to each other, and the power supply rail is clamped by the insulating claws one and two.

[0006] The insulating claw two and the insulating bracket are integrally formed, and the insulating claw two is located at the end closer to the insulating base; the insulating claw one is fixed to the end away from the insulating base by a vertically arranged bolt pair two.

[0007] The insulating base has a guide boss on the outer side of its vertical end, and the insulating bracket has a guide groove at the connection end with the insulating base. The guide groove is fitted onto the guide boss and can slide up and down along the guide boss. The elongated hole is provided through the guide boss.

[0008] The insulating claw has an annular boss at its lower end, and the insulating bracket has a stepped hole at its top, with the annular boss inserted into the upper part of the stepped hole; the bolt pair two passes through the annular boss and the stepped hole to fix the insulating claw one to the insulating bracket.

[0009] The top of the insulating bracket is fitted with a wear-resistant plate, which is located between the first insulating claw and the second insulating claw. The inner cavity of the first insulating claw is fitted with an L-shaped wear-resistant block, and the inner cavity of the second insulating claw is fitted with an L-shaped wear-resistant block. The bottom of the power supply rail is clamped by the wear-resistant plate, the first L-shaped wear-resistant block, and the second L-shaped wear-resistant block.

[0010] The upper end of the insulating claw one is provided with an anti-rotation groove, and the bolt head of the bolt pair two is recessed in the anti-rotation groove; a pair of anti-rotation protrusions are provided on the outer side of the connection end between the insulating bracket and the insulating base, and the bolt head of the bolt pair one is engaged between the pair of anti-rotation protrusions.

[0011] The insulating bracket has a right-angled triangular cavity structure.

[0012] The guide groove and guide boss are both provided with horizontal anti-slip tooth grooves on their mating surfaces.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model can meet the insulation performance indicators of air gap ≥150mm and creepage distance ≥250mm by setting insulating skirts on insulating brackets and insulating bases, under the condition of a minimum installation space of 105mm power supply rail height and 255mm distance from civil foundation to power supply rail current receiving surface.

[0015] 2. The insulating claw and the insulating bracket of this utility model are integrally formed, which reduces the number of parts and fasteners and reduces the workload of installation and maintenance.

[0016] 3. The insulating claw of this utility model adopts a convex and concave structure for positioning and installation, which achieves precise positioning, reduces the shear force on the connecting bolt pair, and improves the safety and reliability of the product.

[0017] 4. This utility model extends the service life of the insulating bracket by embedding wear-resistant plates and blocks to clamp the power supply rail.

[0018] 5. The guide structure and anti-slip structure provided on the joint surface of the insulating base and the insulating bracket of this utility model improve the load-bearing capacity along the track direction. Attached Figure Description

[0019] Figure 1 , 2 This is a schematic diagram of the structure of this utility model;

[0020] Figure 3This is a cross-sectional schematic diagram of the present invention;

[0021] Figure 4 , 5 This is a schematic diagram of the insulating base structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the insulating bracket structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the insulating claw of this utility model;

[0024] Figure 8 This is a schematic diagram of the enclosed structure of the wear-resistant plate, L-shaped wear-resistant block one, and L-shaped wear-resistant block two of this utility model. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-8 The present invention will be described in detail with reference to specific embodiments.

[0026] An adjustable insulating bracket for small spaces includes an insulating base 1 and an insulating bracket 2. The lower outer side of the vertical end of the insulating base 1 is provided with an insulating skirt 1-1. The insulating bracket 2 is fixed to the upper outer side of the vertical end of the insulating base 1 by a horizontally arranged bolt pair 6 passing through an elongated hole 1-2 on the vertical end of the insulating base 1. The insulating bracket 2 is provided with insulating skirts 2-1 on both sides. The top of the insulating bracket 2 is provided with insulating claws 3 and 2-2 facing each other, which clamp the power supply rail 4.

[0027] Furthermore, to facilitate the installation and adjustment of the power supply rail, the insulating claw 2-2 and the insulating bracket 2 are integrally formed, and the insulating claw 2-2 is located at the end closer to the insulating base 1; the insulating claw 3 is fixed to the end away from the insulating base 1 by a vertically arranged bolt pair 5.

[0028] Furthermore, to facilitate the adjustment of the installation position of the insulating bracket 2 and prevent the insulating bracket 2 from deflecting, a guide boss 1-3 is provided on the outer side of the vertical end of the insulating base 1, and a guide groove 2-4 is provided at the connection end between the insulating bracket 2 and the insulating base 1. The guide groove 2-4 is fitted onto the guide boss 1-3 and can slide up and down along the guide boss 1-3, and the elongated hole 1-2 is provided through the guide boss 1-3.

[0029] Furthermore, to facilitate the positioning of the insulating claw 3 and improve the shear strength of the connecting bolt, the lower end of the insulating claw 3 is provided with an annular boss 3-2, and the top of the insulating bracket 2 is provided with a stepped hole 2-5, with the annular boss 3-2 inserted into the upper part of the stepped hole 2-5; the bolt assembly 5 passes through the annular boss 3-2 and the stepped hole 2-5 to fix the insulating claw 3 to the insulating bracket 2. In this embodiment, a single bolt is sufficient to meet the requirements.

[0030] Furthermore, to extend the service life of the insulating bracket, a wear-resistant plate 7 is embedded at the top of the insulating bracket 2, and the wear-resistant plate 7 is located between the insulating claw 1 3 and the insulating claw 2-2. An L-shaped wear-resistant block 1 7-1 is embedded in the inner cavity of the insulating claw 1 3, and an L-shaped wear-resistant block 2 7-2 is embedded in the inner cavity of the insulating claw 2-2. The bottom of the power supply rail 4 is clamped by the wear-resistant plate 7, the L-shaped wear-resistant block 1 7-1, and the L-shaped wear-resistant block 2-2. Specifically, the service life of the insulating bracket can be extended by replacing the wear-resistant plate 7, the L-shaped wear-resistant block 1 7-1, and the L-shaped wear-resistant block 2-2.

[0031] Furthermore, to prevent bolt rotation during installation, the upper end of the insulating claw 3 is provided with an anti-rotation groove 3-1, and the bolt head of the bolt pair 5 is recessed in the anti-rotation groove 3-1; a pair of anti-rotation protrusions 2-3 are provided on the outer side of the connection end between the insulating bracket 2 and the insulating base 1, and the bolt head of the bolt pair 6 is engaged between the pair of anti-rotation protrusions 2-3. Preferably, the pair of anti-rotation protrusions 2-3 are horizontally arranged.

[0032] Furthermore, to reduce weight and save costs, the insulating bracket 2 adopts a right-angled triangular cavity structure, and the insulating base 1 is an L-shaped insulating base.

[0033] Furthermore, to improve connection stability, anti-slip grooves 8 are horizontally provided on the mating surfaces of the guide grooves 2-4 and guide bosses 1-3, so that the two mating surfaces are stably fitted together.

[0034] During on-site installation of the above embodiments, first connect the insulating base 1 and the insulating bracket 2. Then, install and fix the insulating base 1 to the designed position on the side of the track beam through the elongated hole on the horizontal end. After adjusting the height of the insulating bracket 2 and fixing it, install the power supply rail 4. Finally, install the insulating claw 3. The vertical installation position of the power supply rail 4 can be adjusted by adjusting the height of the insulating bracket 2, and the horizontal installation position of the power supply rail 4 can be adjusted through the elongated hole on the horizontal end of the insulating base 1.

[0035] 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 small-space adjustable insulating bracket, comprising an insulating base (1) and an insulating bracket (2), characterized in that: The insulating base (1) has an insulating skirt (1-1) on the lower outer side of the vertical end. The insulating bracket (2) is fixed to the upper outer side of the vertical end of the insulating base (1) by passing through the elongated hole (1-2) on the vertical end of the insulating base (1) through a horizontally arranged bolt pair (6). The insulating bracket (2) has insulating skirts (2-1) on both sides. The insulating bracket (2) has insulating claws (3) and (2-2) on opposite sides at the top. The power supply rail (4) is clamped by the insulating claws (3) and (2-2).

2. The adjustable insulating bracket for small spaces according to claim 1, characterized in that: The insulating claw two (2-2) and the insulating bracket (2) are integrally formed, and the insulating claw two (2-2) is located at the end close to the insulating base (1); the insulating claw one (3) is fixed at the end away from the insulating base (1) by the vertically set bolt pair two (5).

3. The adjustable insulating bracket for small spaces according to claim 1, characterized in that: The insulating base (1) has a guide boss (1-3) on the outer side of its vertical end. The insulating bracket (2) and the insulating base (1) are connected by a guide groove (2-4). The guide groove (2-4) is fitted onto the guide boss (1-3) and can slide up and down along the guide boss (1-3). The elongated hole (1-2) is provided through the guide boss (1-3).

4. The adjustable insulating bracket for small spaces according to claim 2, characterized in that: The lower end of the insulating claw (3) is provided with an annular boss (3-2), and the top of the insulating bracket (2) is provided with a stepped hole (2-5), and the annular boss (3-2) is inserted into the upper part of the stepped hole (2-5); the bolt pair (5) passes through the annular boss (3-2) and the stepped hole (2-5) to fix the insulating claw (3) to the insulating bracket (2).

5. The adjustable insulating bracket for small spaces according to claim 1, characterized in that: The top of the insulating bracket (2) is fitted with a wear-resistant plate (7), and the wear-resistant plate (7) is located between the insulating claw one (3) and the insulating claw two (2-2). The inner cavity of the insulating claw one (3) is fitted with an L-shaped wear-resistant block one (7-1), and the inner cavity of the insulating claw two (2-2) is fitted with an L-shaped wear-resistant block two (7-2). The bottom of the power supply rail (4) is clamped by the wear-resistant plate (7), the L-shaped wear-resistant block one (7-1) and the L-shaped wear-resistant block two (7-2).

6. The adjustable insulating bracket for small spaces according to claim 2, characterized in that: The upper end of the insulating claw one (3) is provided with an anti-rotation groove (3-1), and the bolt head of the bolt pair two (5) is recessed in the anti-rotation groove (3-1); a pair of anti-rotation bosses (2-3) are provided on the outer side of the connection end between the insulating bracket (2) and the insulating base (1), and the bolt head of the bolt pair one (6) is fitted between the pair of anti-rotation bosses (2-3).

7. The adjustable insulating bracket for small spaces according to claim 1, characterized in that: The insulating bracket (2) has a right-angled triangular cavity structure.

8. The adjustable insulating bracket for small spaces according to claim 3, characterized in that: The guide groove (2-4) and guide boss (1-3) are both provided with anti-slip tooth grooves (8) on their mating surfaces.

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