CN212231030U

CN212231030U - Sealing and fixing structure for lead-up wire hole of railway vehicle

Info

Publication number: CN212231030U
Application number: CN202020638202.XU
Authority: CN
Inventors: 崔宪伟; 陈志东; 姚昕; 王宇超; 于昊明; 王大伟
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-12-25
Anticipated expiration: 2030-04-24

Abstract

The utility model provides a sealed fixed knot in rail vehicle draws line hole constructs, this sealed fixed knot constructs includes box, box guide cylinder, its characterized in that still includes fixed plate, bolt, welded nut, box guide cylinder welding on the box, box guide cylinder internal dimension is greater than the draw line hole size of box, welded nut weld in the both sides of box draw line hole outward flange, draw line hole and welded nut all are located the box guide cylinder, the fixed plate is fixed in the box inboard through bolt and welded nut, this utility model discloses well fire prevention sealing clay is sealed, can seal the laying space of cable completely, and firmly support fire prevention sealing clay and prevent to drop, the fixed plate effectively fixes and supports the fire prevention sealing clay that draws the line hole, when the cable receives the vibration in the line hole in the vehicle operation, can be better prevent that fire prevention sealing clay from dropping; the fixing plate installed by the oblong hole has better operability and maintainability.

Description

Sealing and fixing structure for lead-up wire hole of railway vehicle

The technical field is as follows:

the utility model relates to a sealed fixed knot constructs, especially a sealed fixed knot who draws wire hole at rail vehicle constructs.

Background

In the field of rail transit vehicles, such as locomotives, subways, high-speed rails, trams and the like, a sealing and fixing structure for a vehicle lead to enter a cab or a passenger room relates to sealing grade, flame retardance, noise reduction, shock absorption, cable protection effect and the like, and a good lead-in wire sealing structure is a necessary condition for ensuring good sealing property, safety, comfort and maintainability of the vehicle. The existing lead-up structure is that a lead passes through a box guide cylinder to enter a driver cab or a passenger room, fireproof sealing cement is poured into the box guide cylinder, the lead passes through a nylon hose to fixedly enter the driver cab or the passenger room through a sealing piece, and the existing structure has the defect that the fireproof sealing cement is easy to fall off or a plurality of cables pass through the nylon hose to be laid and the gap tightness is poor.

The invention content is as follows:

the problem of lead to the pore sealing nature that prior art exists is bad, and seal structure is unstable, the utility model provides a sealed fixed knot constructs through the fixed plate that has the slotted hole of installation in the box, effectually prevents the sealed daub of preventing fires the defect that drops and the leakproofness of cable is bad.

In order to realize the above-mentioned purpose, the utility model provides a rail vehicle draws sealed fixed knot in line hole constructs, this sealed fixed knot construct includes box, box guide tube, its characterized in that still includes fixed plate, bolt, welding nut, box guide tube welding on the box, box guide tube internal dimension is greater than the draw-in line hole size of box, welding nut weld in the both sides that the box draws in line hole outward flange, draw-in line hole and welding nut all be located the box guide tube, the fixed plate constitute by two symmetrical corrosion resistant plate, every corrosion resistant plate left side and right side all are equipped with symmetrical slotted hole, the part of every corrosion resistant plate's lower limb placed in the middle all designs into semicircular shape, the slotted hole and the welding nut hole of fixed plate are corresponding, and the fixed plate is fixed in the box inboard through bolt and welding nut.

The sealing and fixing structure of the lead-in wire is characterized in that an installation fixing plate with a long circular hole is arranged on the inner surface of the box body under the lead-in wire hole of a vehicle, the size of the lead-in wire hole can be researched and matched in the trial-manufacturing process of a first train by the fixing plate, the wire passing space can be adjusted in the length direction of the long circular hole according to the duty ratio of the lead-in wire during installation, the installation and maintenance are convenient, and the fixing plate is installed on the box body through bolts and welding nuts to support and fix the fireproof sealing daub.

The fireproof sealing plaster in the scheme is sealed, so that a laying gap of a cable can be completely sealed, the fireproof sealing plaster is firmly supported to prevent the cable from falling off, the fixing plate effectively fixes and supports the fireproof sealing plaster in the lead-up wire hole, and when the cable in the lead-up wire hole is vibrated in the running process of a vehicle, the fireproof sealing plaster can be better prevented from falling off; the fixing plate installed by the oblong hole has better operability and maintainability.

Drawings

FIG. 1 is a schematic view of the overall structure of a case;

FIG. 2 is a top view of the box guide;

FIG. 3 is an enlarged view of portion C of FIG. 2;

FIG. 4 is a schematic view of the mounting of the fixing plate;

FIG. 5 is a schematic view of a fixing plate;

1-a box body; 2-a box guide cylinder; 3, fixing a plate; 4-welding a nut; 5-a cable; 6-bolt.

Detailed Description

As shown in fig. 1-5: the sealing and fixing structure comprises a box body 1, a box body guide cylinder 2, a fixing plate 3, a welding nut 4 and a bolt 6, wherein the box body guide cylinder 2 is welded on the box body 1, the inner size of the box body guide cylinder 2 is larger than the size of an upper lead hole of the box body 1 in the box body manufacturing process, after the box body 1 is welded, a part of the box body 1 is exposed in the box body guide cylinder 2 for welding the nut, the welding nut 4 is welded on two sides of the outer edge of the upper lead hole of the box body 1, the upper lead hole and the welding nut 4 are both positioned in the box body 1 guide cylinder, an installation fixing plate 3 with a long round hole is arranged on the inner surface of the box body 1 right below the upper lead hole of a vehicle, the fixing plate 3 consists of two symmetrical stainless steel plates, the left side and the right side of each stainless plate are both provided with symmetrical long round holes, and the part of the lower, during the installation at first with cable 5 pass through the box and lead cylinder 2 and penetrate the line hole and get into, then tighten up cable 5 with fixed plate 3 through the slotted hole on the fixed plate to use welded nut 4 and bolt 6 to fasten, at last pour into box guide cylinder 2 with the sealed clay of preventing fires from the car, seal, fixed plate 3 can form firm the support to this sealed clay of preventing fires like this, prevents that the sealed clay of preventing fires from droing.

The fixed plate 3 can be used for matching the sizes of wire holes in the trial-manufacturing process of a first train, the wire passing space can be adjusted in the length direction of the oblong hole according to the wire-feeding duty ratio during installation, the installation and maintenance are convenient, the sizes of the wire holes led in the holes of the fixed plate 3 can be matched according to the actual quantity of the cables 5 on site, and therefore the accurate sizes can be obtained; because the mounting hole is the slotted hole on the fixed plate 3, so fixed plate 3 has the adjustment volume and can satisfy the change of cable 5 quantity in the certain extent, has the adjustability.

For preventing that the fire prevention sealing clay from droing, adopt bolt 6 to twist weld nut 4 from the box inboard and can be fixed with fixed plate 3 to support and fixed fire prevention sealing clay, fire prevention sealing clay is sealed in this scheme, can seal the space of laying of cable completely, and firmly support fire prevention sealing clay and prevent to drop.

The fixing plate 3 effectively fixes and supports the fireproof sealing plaster of the lead wire hole, and when a cable in the lead wire hole is vibrated in the running process of a vehicle, the fireproof sealing plaster can be better prevented from falling off; the fixing plate 3 installed by the oblong hole has better operability and maintainability.

Claims

1. The utility model provides a sealed fixed knot in rail vehicle draws line hole constructs, this sealed fixed knot constructs includes box, box guide tube, its characterized in that still includes fixed plate, bolt, welded nut, box guide tube welding on the box, the box guide tube internal dimension is greater than the draw line hole size of box, welded nut weld in the both sides of box draw line hole outward flange, draw line hole and welded nut all are located the box guide tube, the fixed plate constitute by two symmetrical corrosion resistant plate, every corrosion resistant plate left side and right side all are equipped with symmetrical slotted hole, the part of every corrosion resistant plate's lower limb placed in the middle all designs into semicircular shape, the slotted hole and the welded nut hole of fixed plate are corresponding, the fixed plate is fixed in the box inboard through bolt and welded nut.