Small-limit single-rail end elbow device

Abstract

A small-limit monorail end elbow device comprises an end elbow and an insulating base, the insulating base is fixed on a track beam, a T-shaped groove is formed in the back face of an inclined section of the end elbow in the line direction, a T-shaped clamping head at the top of the insulating base is clamped in the T-shaped groove, and when the end elbow slides along the line, the T-shaped groove slides along the T-shaped clamping head. The insulating base is clamped in the T-shaped groove at the bottom of the end elbow, so that the end elbow can slide on the insulating base along the line direction after being installed, and the risk that the insulating base is damaged due to thermal expansion and cold contraction of the end elbow is effectively overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of rigid power supply systems for rail transit, and in particular relates to an end elbow device for a small-limit single rail. Background Art

[0002] The end elbow of the contact rail is an important part of the contact rail power supply system. It consists of a straight section and an inclined section. The straight section is parallel to the normal contact rail, and the inclined section is inclined at a certain angle to facilitate the smooth transition of the collector shoe from the extended state to the compressed state. As the speed of the vehicle increases, the slope of the inclined section of the end elbow decreases, and the length will also extend, so that the space between the end of the inclined section and the installation foundation is seriously small, which brings difficulties to the support and installation of the inclined section. For example, the installation space of the straight section of the end elbow of the DC750V straddle-type monorail is only 140mm, and the space size of the inclined section is even smaller. At present, the support and installation of this inclined section adopts fixed connection or suspension without support. The end elbow is subjected to abnormal force or large shaking under the impact of the collector shoe, which may affect the product life and current delivery quality. Utility Model Content

[0003] The utility model provides a small-limit single-rail end elbow device to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by the utility model is: a small-limit single-rail end elbow device, comprising an end elbow and an insulating base, wherein the insulating base is fixed on a track beam, a T-shaped groove is provided on the back of the inclined section of the end elbow along the line direction, a T-shaped clamp on the top of the insulating base is clamped in the T-shaped groove, and when the end elbow slides along the line, the T-shaped groove slides along the T-shaped clamp.

[0005] A π-shaped insulating shield is fixed to the rear end of the inclined section of the end elbow. The tail end of the inclined section of the end elbow is clamped between two vertical walls of the π-shaped insulating shield and is threadedly connected to both sides of the end elbow by screws passing through the two vertical walls.

[0006] An elastic element is arranged on the top of the T-shaped clamp.

[0007] The clamping part of the T-shaped clamp is a circular structure.

[0008] A mounting groove is also provided on the back of the inclined section of the end elbow. The mounting groove is located at the left end of the T-slot, and the mounting groove is connected to the T-slot and the bottom of the groove is flush.

[0009] The back side of the inclined section of the end elbow is also provided with an avoidance groove, and the avoidance groove is located at the right end of the T-shaped groove.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The insulating base of the utility model is clamped in the T-slot at the bottom of the end elbow, so that the end elbow can slide on the insulating base along the line direction after installation, effectively overcoming the risk of damaging the insulating base due to thermal expansion and contraction of the end elbow.

[0012] 2. The utility model provides a π-shaped insulating shield at the tail end of the inclined section of the end elbow, and its two wings extend to the outside of the end elbow, which effectively prolongs the insulation distance between the end elbow and the track beam and improves the electrical insulation capacity of the inclined section of the end elbow.

[0013] 3. The clamping part of the T-shaped clamp of the insulating base of the utility model adopts a circular structure. After installation, the clamping part is in linear contact with the side wall of the T-shaped groove, which effectively avoids the jamming phenomenon that may occur when installing the curved section of the end elbow.

[0014] 4. An elastic element is provided on the top of the T-shaped clamp of the insulating base of the utility model, which effectively alleviates the impact of the collector shoe on the end elbow, reduces noise and improves the current collecting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the end elbow structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the insulating shield of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the insulating base of the utility model.

[0019] Figure 5 It is a schematic diagram of the use state of the utility model. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-5 The utility model is described in detail with specific implementation modes.

[0021] A small clearance monorail end elbow device comprises an end elbow 1 and an insulating base 2; the insulating base 2 is fixed on a track beam 4, a T-slot 1-1 is provided on the back of the inclined section of the end elbow 1 along the line direction, a T-clip 2-1 on the top of the insulating base 2 is clamped in the T-slot 1-1, and when the end elbow 1 slides along the line, the T-slot 1-1 slides along the T-clip 2-1.

[0022] Furthermore, a π-shaped insulating shield 3 is fixed to the rear end of the back of the inclined section of the end elbow 1, and the rear end of the inclined section of the end elbow 1 is clamped between the two vertical walls of the π-shaped insulating shield 3, and is threadedly connected to the two sides of the end elbow 1 through the screw 6 passing through the two vertical walls. The two wings of the π-shaped insulating shield extend to the outside of the end elbow 1, effectively extending the insulation distance between the screw 6 and the end elbow and the track beam, and improving the electrical insulation capacity of the inclined section of the end elbow.

[0023] Furthermore, an elastic element 5 is provided on the top of the T-shaped clamp 2-1. When the train collector shoe passes through the elbow, the elastic element 5 is compressed, which buffers the impact force of the collector shoe on the end elbow 1 and improves the current collecting quality.

[0024] Furthermore, an installation groove 1-2 and an avoidance groove 1-3 are also provided on the back side of the inclined section of the end elbow 1. The installation groove 1-2 is located at the left end of the T-slot 1-1, and the avoidance groove 1-3 is located at the right end of the T-slot 1-1. The installation groove 1-2 is connected to the T-slot 1-1 and the bottom of the groove is flush, which is convenient for the T-type clamp to slide in; the avoidance groove 1-3 is used to avoid the connecting bolts that fix the insulating base 2.

[0025] Furthermore, the clamping portion of the T-shaped clamp 2-1 is a circular structure, which effectively avoids the jamming phenomenon when the end elbow curved section is installed.

[0026] In one embodiment, the end elbow 1 is preferably an I-rail formed in one piece through a machining process and has good rigidity.

[0027] During installation, first fix the insulating base 2 on the track beam 4, then put the installation groove 1-2 on the end elbow 1 on the T-shaped clamp 2-1 on the insulating base 2, and then move the end elbow 1 to the left along the line direction so that the T-shaped clamp 2-1 is clamped in the T-shaped groove 1-1, and finally connect the left end of the end elbow 1 to the line contact rail through the middle joint.

[0028] 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 small clearance monorail end elbow device, comprising an end elbow (1) and an insulating base (2), characterized in that: The insulating base (2) is fixed on the track beam (4); a T-shaped slot (1-1) is provided on the back of the inclined section of the end elbow (1) along the line direction; a T-shaped clamp (2-1) on the top of the insulating base (2) is clamped in the T-shaped slot (1-1); when the end elbow (1) slides along the line, the T-shaped slot (1-1) slides along the T-shaped clamp (2-1).

2. The small clearance single rail end elbow device according to claim 1, characterized in that: A π-shaped insulating shield (3) is fixed to the rear end of the inclined section of the end elbow (1); the rear end of the inclined section of the end elbow (1) is clamped between two vertical walls of the π-shaped insulating shield (3) and is threadedly connected to both sides of the end elbow (1) through screws (6) passing through the two vertical walls.

3. A small clearance single rail end elbow device according to claim 1 or 2, characterized in that: An elastic element (5) is provided on the top of the T-shaped clamp (2-1).

4. The small clearance single rail end elbow device according to claim 3 is characterized in that: The clamping part of the T-shaped clamp (2-1) is a circular structure.

5. The small clearance single rail end elbow device according to claim 4 is characterized in that: A mounting groove (1-2) is also provided on the back of the inclined section of the end elbow (1); the mounting groove (1-2) is located at the left end of the T-shaped groove (1-1); the mounting groove (1-2) is connected to the T-shaped groove (1-1) and the groove bottom is flush.

6. The small clearance single rail end elbow device according to claim 5, characterized in that: The back side of the inclined section of the end elbow (1) is also provided with an avoidance groove (1-3), and the avoidance groove (1-3) is located at the right end of the T-shaped groove (1-1).

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