Electric heating sanding nozzle device for rail transit vehicle

Abstract

The utility model relates to an electric heating sanding nozzle device for a rail transit vehicle. The electric heating sanding nozzle device comprises a sanding nozzle, a sanding valve connecting pipeline, an electric heating rod and a cable, the sand spraying nozzle is provided with a sand spraying valve connecting pipeline which is communicated with the sand spraying nozzle, an electric heating rod is arranged in the sand spraying nozzle, the electric heating rod is electrically connected with a cable, and the sand spraying nozzle, the sand spraying valve connecting pipeline and the cable are respectively provided with a foreign matter striking prevention device; the device can effectively prevent the train from being hit by foreign matters during high-speed running, and is long in service life, safe, reliable and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the field of rail transportation, in particular to an electric heating sand-spreading nozzle device for rail transportation vehicles. Background Art

[0002] Rail transit sand spreading devices are an effective way to improve wheel-rail adhesion. They use compressed air to blow sand onto the rails and wheels, increasing the adhesion between the wheels and rails and preventing wheel idling or brake lock caused by insufficient adhesion during traction or braking. The sand spreading device primarily consists of a sand box, a sand spreading unit, and a sand spraying nozzle. The sand spraying nozzle is mounted on the bogie mounting arm and primarily functions to direct sand from the sand box and sand spreading unit and spray it between the rails and wheels. Currently, the sand spraying nozzle is typically a split structure, prone to detachment, and unprotected, resulting in a short lifespan. Utility Model Content

[0003] The purpose of the utility model is to provide an electric heating sand spreading nozzle device for rail transit vehicles in order to address the deficiencies of the existing technology.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] An electric heating sand-spreading nozzle device for rail transit vehicles includes a sand-spreading nozzle, a sand-spreading valve connecting pipe, an electric heating rod and a cable; the sand-spreading nozzle is provided with a connected sand-spreading valve connecting pipe, the sand-spreading nozzle is provided with the electric heating rod, and the electric heating rod is electrically connected to the cable; the sand-spreading nozzle, the sand-spreading valve connecting pipe and the cable are all provided with a foreign body impact prevention device.

[0006] Furthermore, the sand-spreading nozzle includes a mounting block and a sand-discharging pipe; the mounting block and the sand-discharging pipe are an integrated structure and are made of aluminum alloy; the mounting block is provided with a sand-discharging hole that is in communication with the sand-discharging pipe; and the outside of the sand-discharging pipe is provided with pipe protective rubber.

[0007] Furthermore, the sand spreading valve connecting pipe adopts a metal-sheathed rubber hose, one end of the sand spreading valve connecting pipe is connected to the sand outlet through a first connector, and the other end is connected to the sand outlet of the sand spreading valve through a second connector.

[0008] Furthermore, a mounting hole is provided on the mounting block, the electric heating rod is provided in the mounting hole, and thermal conductive paste is provided between the electric heating rod and the mounting hole.

[0009] Furthermore, the mounting block is provided with an inspection hole penetrating the mounting hole, and the inspection hole is detachably provided with a plug and sealed by a rubber sealing ring.

[0010] Furthermore, a metal connecting pipe is provided on the outside of the cable near the electric heating rod. The metal connecting pipe is threadedly connected to the mounting block and is sealed by a copper sealing ring.

[0011] Furthermore, an electric heating rod, a cable protective rubber and a grounding wire are provided at the connection between the cable and the electric heating rod, and the grounding wire is fixed by a grounding bolt.

[0012] Furthermore, a corrugated tube is provided on the outside of the cable. The corrugated tube is provided on the cable through a metal clamp hose connector. A winding sheath is provided on the outside of the corrugated tube.

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

[0014] 1. The sand sprinkling nozzle adopts an integrally processed nozzle to avoid the risk of the sand outlet pipe and the threaded connection of the mounting block falling off. The sand outlet pipe is equipped with a pipe protective rubber as a device to prevent foreign objects from hitting the sand outlet pipe when the train is running at high speed.

[0015] 2. The sand spraying nozzle is equipped with a built-in electric heating rod and an inspection hole for easy maintenance.

[0016] 3. The cable is protected by a corrugated tube with a winding sheath on the outside. The corrugated tube and the winding sheath serve as a device to prevent foreign objects from hitting the cable.

[0017] 4. The connecting pipe of the sand spreading valve adopts a metal-sheathed rubber hose as a device to prevent foreign objects from hitting. The metal braided sheath outside the rubber hose can effectively prevent foreign objects from hitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below with reference to the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the throat clamp structure of the utility model;

[0021] Figure 3 This is a schematic structural diagram of the elbow joint of the present utility model.

[0022] Description of reference numerals:

[0023] 1. Sanding nozzle; 2. Sanding pipe; 3. Sanding valve connecting pipe; 4. Cable; 5. Metal connecting pipe; 6. Bellows; 7. Wrapping sheath; 8. Grounding wire; 9. Inspection hole; 10. Connector; 11. Electric heating rod; 21. Pipeline protective rubber; 41. Electric heating rod and cable protective rubber; 51. Copper sealing ring; 61. Metal clamp hose connector; 91. Seal; 211. Hose clamp. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-3 As shown: An electric heating sand-spreading nozzle device for rail transit vehicles includes a sand-spreading nozzle 1, a sand-spreading valve connecting pipe 3, an electric heating rod 11 and a cable 4; the sand-spreading nozzle 1 is provided with a connected sand-spreading valve connecting pipe 3, an electric heating rod 11 is provided in the sand-spreading nozzle 1, and the electric heating rod 11 is electrically connected to the cable 4; the sand-spreading nozzle 1, the sand-spreading valve connecting pipe 3 and the cable 4 are all provided with a foreign body impact prevention device.

[0026] The sand spout 1 comprises a mounting block and a sand discharge pipe 2; the mounting block and the sand discharge pipe 2 are an integrated structure made of aluminum alloy. The mounting block is provided with a sand discharge hole that intersects the sand discharge pipe 2, and a pipe protective rubber 21 is provided on the outside of the sand discharge pipe 2. Preferably, the sand spout 1 is integrally machined from a high-strength aluminum alloy to prevent the sand discharge pipe 2 from falling out of the threaded connection between the mounting block and the sand spout 1. The pipe protective rubber 21 is provided on the outside of the sand discharge pipe 2 as a foreign object impact protection device. This rubber can be integrally vulcanized onto the sand discharge pipe 2, or a hose clamp 211 can be used to secure the rubber sleeve to the sand discharge pipe 2, effectively preventing foreign objects from striking the sand discharge pipe 2 when the train is traveling at high speeds.

[0027] The sand spreading valve connecting pipe 3 utilizes a metal-sheathed rubber hose. One end of the sand spreading valve connecting pipe 3 is connected to the sand outlet via connector 1, and the other end is connected to the sand spreading valve outlet via connector 2. Preferably, the sand spreading valve connecting pipe 3 is used between the sand spreading nozzle 1 and the sand spreading valve. Both ends of the sand spreading valve connecting pipe 3 and the corresponding connectors are press-fitted into one piece. Connector 2 10 can be a straight pipe connector or an elbow connector. Connection is simple, disassembly is convenient, and safety and reliability are guaranteed. The sand spreading valve connecting pipe 3 utilizes a metal-sheathed rubber hose as a foreign body impact protection device. Specifically, the metal braided outer sheath of the rubber hose effectively prevents foreign body impact.

[0028] The mounting block is provided with a mounting hole, the electric heating rod 11 is arranged in the mounting hole, and a thermal conductive paste is arranged between the electric heating rod 11 and the mounting hole. Preferably, the electric heating rod 11 adopts an AC220 or DC110 power supply standard heating rod.

[0029] The mounting block is also provided with an inspection hole 9 that passes through the mounting hole. The inspection hole 9 is detachably provided with a plug 91 that is sealed by a rubber seal. The inspection hole 9 facilitates the removal and inspection of the electric heating rod 11. Preferably, the plug 91 can be a hexagonal cylindrical screw plug.

[0030] A metal connecting tube 5 is provided on the outside of the cable 4 near the electric heating rod 11. The metal connecting tube 5 is threadedly connected to the mounting block and sealed with a copper sealing ring. The copper sealing ring can achieve an IP67 protection level and has a better sealing effect and longer life than a rubber sealing ring in high temperature environments.

[0031] The connection between the cable 4 and the electric heating rod 11 is provided with an electric heating rod and cable protective rubber 41 and a grounding wire 8, and the grounding wire 8 is fixed by a grounding bolt. The electric heating rod and cable protective rubber 41 is used to prevent the electric heating rod 11 and the cable 4 from wearing out.

[0032] A corrugated tube 6 is further provided on the outside of the cable 4, and the corrugated tube 6 is provided on the cable 4 through a metal clamp hose connector 61. A winding sheath 7 is provided on the outside of the corrugated tube 6. The corrugated tube 6 and the winding sheath 7 serve as a foreign body impact prevention device, which can effectively prevent foreign bodies from hitting the cable 4.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0034] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrically heated sand-spreading nozzle device for rail transit vehicles, characterized in that: The invention comprises a sand-spreading nozzle (1), a sand-spreading valve connecting pipe (3), an electric heating rod (11) and a cable (4); the sand-spreading nozzle (1) is provided with the sand-spreading valve connecting pipe (3) in communication, the sand-spreading nozzle (1) is provided with the electric heating rod (11), the electric heating rod (11) is electrically connected to the cable (4), and the sand-spreading nozzle (1), the sand-spreading valve connecting pipe (3) and the cable (4) are all provided with a device to prevent foreign matter from hitting.

2. The electric heating sand spraying nozzle device for rail transit vehicles according to claim 1, characterized in that: The sand spout (1) comprises a mounting block and a sand outlet pipe (2); the mounting block and the sand outlet pipe (2) are an integrated structure and are made of aluminum alloy; a sand outlet hole is provided on the mounting block and is in communication with the sand outlet pipe (2); and a pipe protective rubber (21) is provided on the outside of the sand outlet pipe (2).

3. The electric heating sand spraying nozzle device for rail transit vehicles according to claim 2, characterized in that: The sand spreading valve connecting pipe (3) adopts a metal-sheathed rubber hose, one end of the sand spreading valve connecting pipe (3) is connected to the sand outlet hole through a first connector, and the other end is connected to the sand outlet of the sand spreading valve through a second connector.

4. The electric heating sand spraying nozzle device for rail transit vehicles according to claim 2, characterized in that: A mounting hole is provided on the mounting block, the electric heating rod (11) is arranged in the mounting hole, and thermal conductive paste is provided between the electric heating rod (11) and the mounting hole.

5. The electric heating sand spreading nozzle device for rail transit vehicles according to claim 4, characterized in that: The mounting block is also provided with an inspection hole (9) penetrating the mounting hole. The inspection hole (9) is detachably provided with a plug (91) and is sealed by a rubber sealing ring.

6. The electric heating sand spreading nozzle device for rail transit vehicles according to claim 2, characterized in that: A metal connecting pipe (5) is provided on the outside of the cable (4) near the electric heating rod (11); the metal connecting pipe (5) is threadedly connected to the mounting block and is sealed by a copper sealing ring.

7. The electrically heated sand-spreading nozzle device for rail transit vehicles according to claim 6, characterized in that: An electric heating rod, a cable protection rubber (41) and a grounding wire (8) are provided at the connection between the cable (4) and the electric heating rod (11), and the grounding wire (8) is fixed by a grounding bolt.

8. The electric heating sand spraying nozzle device for rail transit vehicles according to claim 7, characterized in that: A corrugated tube (6) is further provided on the outside of the cable (4), and the corrugated tube (6) is provided on the cable (4) via a metal clamp hose connector (61). A winding sheath (7) is provided on the outside of the corrugated tube (6).

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