A rolling sleeve type switch on the contact network

Abstract

The present invention belongs to the technical field of railway contact networks, and specifically relates to a roller-type switch for the contact network. The switch comprises a contact line, two connecting brackets symmetrically fixed above the contact line via positioning clamps, and a fixing rod and a rotatable restraining tube disposed between the connecting brackets. The switch and the lateral contact line utilize rolling contact with rollers, and the restraining tubes are installed in sections. The restraining tubes roll as the contact line retracts and retracts, resulting in point-line contact between the contact line and the restraining tubes. This minimizes wear on the contact line and significantly increases the service life of the contact line and the switch.

Description

Technical Field

[0001] The invention belongs to the technical field of railway contact network, in particular to a rolling sleeve type line switch on the contact network. Background Art

[0002] Turnouts, an indispensable part of railway construction, are line connection devices that allow locomotives to transfer from one track to another. They are usually laid in large quantities at stations and marshalling yards. In electrified railways, all cross-contact line switch arrangements must be equipped with transition line switch devices to achieve continuous power supply between different tracks. Achieving smooth transitions is particularly important for high-speed railways. Currently, the commonly used ordinary contact line switches are Y-type, T-type, and S-type switches. These switches all have lateral contact wires passing between the restraining tube (rod) and the main line contact wire. As the temperature changes and the deflection of the contact wire changes, relative sliding friction will occur between the lateral contact wire, the main line contact wire, and the restraining tube (rod). Especially in areas with large temperature differences between day and night, friction is severe, the cross-section of the contact wire is severely worn, the restraining tube is worn and broken, and even the restraining tube falls off and hits the pantograph, causing major safety accidents. Summary of the Invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a rolling sleeve type switch on a contact network.

[0004] The present invention is achieved through the following technical solutions: a rolling sleeve type line switch on the contact network, including a contact line, two connecting brackets are symmetrically fixed above the contact line through positioning wire clamps, a fixing rod and a limiting tube are arranged between the connecting brackets, and the limiting tube can rotate flexibly.

[0005] In the above solution, a roller support shaft is provided between the two connecting brackets, bearings are provided at both ends of the roller support shaft, and the limiting tube is mounted on the roller support shaft through the bearings.

[0006] In the above solution, the roller support shaft is composed of multiple sections connected in series through threaded connecting sleeves, the roller support shafts at both ends are fixed to the connecting bracket through threaded connecting sleeves, and a limiting tube is installed on each section of the roller support shaft through a bearing.

[0007] In the above solution, the bearing is a maintenance-free ceramic bearing.

[0008] In the above solution, a fixing rod is fixed between the two connecting brackets, and the threaded connecting sleeve is connected to the fixing rod via a supporting connecting ring.

[0009] In the above solution, the restriction tube is composed of multiple sections connected in series, each section of the restriction tube can rotate independently, and a supporting connecting ring is provided between each section of the restriction tube.

[0010] In the above solution, the cross section of the fixing rod is rectangular, and the material of the fixing rod is aluminum alloy.

[0011] In the above scheme, the connecting bracket is Z-shaped, the lower end of the connecting bracket is fixed to the positioning wire clamp through a positioning pin sleeve, the upper end of the connecting bracket is riveted to the fixing rod through aluminum rivets, and the limiting tube is fixed to the lower side of the connecting bracket.

[0012] In the above solution, the connecting bracket is manufactured using a 6082 aluminum alloy metal die forging process.

[0013] In the above solution, the limiting tube is made of 6082-T5 aluminum alloy tube.

[0014] Compared with the prior art, the roller-type switch on the contact network of the present invention has the following beneficial effects:

[0015] 1. The contact between the turnout and the side line adopts rolling contact of roller sleeve, and the limiting tube is installed in sections. When the contact line is extended or retracted, the limiting tube rolls, and the contact line and the limiting tube are in point-line contact, which causes minimal wear on the contact line.

[0016] 2. The limiting tube is fixed on the roller support shaft, which increases the deflection of the wire branch device and extends the service life of the product.

[0017] 3. The bearings in the limiting tube adopt rolling ceramic bearings, which are light, waterproof, corrosion-resistant, applicable to a wide range of ambient temperature, and do not require oiling and maintenance.

[0018] 4. The main components of the turnout are made of high-strength aluminum alloy profiles and metal die forging technology, with anodized surface, light weight and corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the use status of the switch on the contact network.

[0020] Figure 2 The present invention is a structural schematic diagram of a rolling sleeve type switch on a contact network.

[0021] Figure 3 yes Figure 2 Left view of .

[0022] In the figure: 1. Side line contact wire, 2. Line branch, 3. Main line contact wire, 4. Positioning wire clamp, 5. Positioning pin sleeve, 6. Threaded connection sleeve, 7. Connecting bracket, 8. Ceramic bearing, 9. Roller sleeve support shaft, 10. Limiting tube, 11. Fixing rod, 12. Support connecting ring, 13. Aluminum rivet. DETAILED DESCRIPTION

[0023] The following is a further description of a rolling sleeve type switch on a contact network of the present invention in conjunction with the accompanying drawings and specific embodiments:

[0024] Figure 1 This is a schematic diagram of the use of the switch on the contact network. Figure 2 This is a structural diagram of a rolling sleeve type switch on a contact network according to the present invention. Figure 3 yes Figure 2 Left side view. The figure shows a roller-type turnout on the contact network. Two connecting brackets 7 are symmetrically fixed above the mainline contact wire 3 via a pair of positioning clamps 4. The connecting brackets 7 are Z-shaped. The lower ends of the connecting brackets 7 are fixed to the positioning clamps 4 via positioning pin sleeves 5. The upper ends of the connecting brackets 7 are riveted to a fixing rod 11 with aluminum rivets 13. The fixing rod 11 has a rectangular cross-section and is made of aluminum alloy. A threaded connection sleeve 6 is fixed to the lower inner side of the connecting bracket 7. Connected to the threaded connection sleeve 6 is a roller support shaft 9. The roller support shaft 9 consists of multiple sections connected in series via threaded connection sleeves 6. The threaded connection sleeves 6 are connected to the fixing rod 11 via supporting connection rings 12. A corresponding limiting tube 10 is mounted on each section of the roller support shaft 9 via a ceramic bearing 8. The limiting tube 10 can rotate flexibly on the roller support shaft 9. The connecting brackets 7 are manufactured using a 6082 aluminum alloy die-forging process, and the limiting tube 10 is made of 6082-T5 aluminum alloy tubing.

[0025] The side line contact line 1 passes between the limiting tube 10 and the main line contact line 3. With the change of temperature and deflection, movement occurs between the side line contact line 1 and the limiting tube 10. The limiting tube 10 rolls under the action of the bearing, and the contact with the side line contact line 1 is only point-line contact, which minimizes the wear on the contact line and greatly increases the service life of the contact line and the line switch.

[0026] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present profession can make slight changes or modifications to equivalent embodiments of the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A rolling-type switch on a contact network, comprising a contact wire, two connecting brackets (7) symmetrically fixed above the contact wire via a positioning clamp (4), characterized in that: A fixing rod (11) and a limiting tube (10) are provided between the connecting brackets (7), and the limiting tube (10) can rotate flexibly; the roller sleeve support shaft (9) is connected in series by multiple sections through a threaded connecting sleeve (6), and the roller sleeve support shafts (9) at both ends are fixed to the connecting bracket (7) through the threaded connecting sleeve (6), and a corresponding limiting tube (10) is installed on each section of the roller sleeve support shaft (9) through a bearing; the limiting tube (10) is connected in series by multiple sections, and each section of the limiting tube (10) can rotate independently, and a supporting connecting ring (12) is provided between each section of the limiting tube (10); a roller sleeve support shaft (9) is provided between the two connecting brackets (7), and bearings are provided at both ends of the roller sleeve support shaft (9), and the limiting tube (10) is installed on the roller sleeve support shaft (9) through the bearings; the bearings are maintenance-free ceramic bearings.

2. The rolling-type switch on the contact network according to claim 1, characterized in that: A fixing rod (11) is fixed between the two connecting brackets (7), and the threaded connecting sleeve (6) is connected to the fixing rod (11) via a supporting connecting ring (12).

3. The rolling-type switch on the contact network according to claim 2, characterized in that: The cross section of the fixing rod (11) is rectangular, and the material of the fixing rod (11) is aluminum alloy.

4. The rolling-type switch on the contact network according to claim 1, characterized in that: The connecting bracket (7) is Z-shaped, the lower end of the connecting bracket (7) is fixed to the positioning clamp (4) through a positioning pin sleeve (5), the upper end of the connecting bracket (7) is riveted to a fixing rod (11) through aluminum rivets, and the limiting tube (10) is fixed to the lower side of the connecting bracket (7).

5. The rolling-type switch on the contact network according to claim 1, characterized in that: The connecting bracket (7) is manufactured using a 6082 aluminum alloy metal die forging process.

6. The rolling-type switch on the contact network according to claim 1, characterized in that: The material of the limiting tube (10) is 6082-T5 aluminum alloy tube.

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