CN202971509U

CN202971509U - T-shaped bolt for fasteners of high-speed railways

Info

Publication number: CN202971509U
Application number: CN201220512127.8U
Authority: CN
Inventors: 李建宏; 刘永奎; 郭志明; 田伟
Original assignee: CENTRAL PLAINS LEADER RAILWAY TRACK TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: CENTRAL PLAINS LEADER RAILWAY TRACK TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2012-10-08
Filing date: 2012-10-08
Publication date: 2013-06-05
Anticipated expiration: 2022-10-08

Abstract

The utility model discloses a T-shaped bolt for fasteners of high-speed railways. The T-shaped bolt comprises a bolt head part and a screw, wherein the bolt head part is round or rectangular; and a lower support surface of the head part is a conical surface. The T-shaped bolt for fasteners of high-speed railways can be mounted rapidly and conveniently and can improve the work efficiency greatly.

Description

The T-shaped bolt of a kind of high-speed railway fastener

Technical field

The utility model belongs to technical field of fastening, relates in particular to the T-shaped bolt of a kind of high-speed railway fastener.

Background technique

WJ-7 type fastener system is a kind of fastener system that is applicable to without tiny fragments of stone, coal, etc. shouderless track, this fastener is elasticity separated rail fastening system, fastener system is comprised of spring, iron chair, rubber mat plate, collets, anchor bolt and height adjusting cushion plate etc., iron chair is anchored on track plates with anchor bolt, spring needs a kind of special bolt to carry out fastening, because rail fastener quantity is many, this bolt need can be realized the quick mounting function, and existing plain bolt generally all is difficult to satisfy its use.

The model utility content

The purpose of this utility model is to provide the T-shaped bolt of a kind of high-speed railway fastener.

For achieving the above object, the technical solution adopted in the utility model is:

The T-shaped bolt of a kind of high-speed railway fastener comprises bolt head and screw rod, and bolt head is long-round-shape or rectangular, and head lower support face is conical surface.

Described bolt head and screw surface all have anti-corrosion layer.

Described anti-corrosion layer is zinc-base chromate composite coating.

When the utility model uses, bolt is poured in the plum blossom hole of iron chair, bolt head is long-round-shape or rectangular, matches with iron chair long-round-shape plum blossom hole opening, and bolt clockwise rotates 90 °, bolt head is just in time vertical with slotted hole, and be stuck in the hole, after T-shaped bolt installation in position, spring, plain washer and nut are installed again, spring is fastened to standard torque, install fast, conveniently, can greatly increase work efficiency; The utility model outside applies zinc-base chromate composite coating, can improve the antiseptic property of product.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the worm's eye view of Fig. 1;

Fig. 4 is that the utility model is installed and used view;

Fig. 5 is schematic diagram after the utility model is installed;

Fig. 6 is the worm's eye view of Fig. 5.

Embodiment

As shown in Figures 1 to 3, the T-shaped bolt of a kind of high-speed railway fastener comprises bolt head 1 and screw rod 2, and bolt head 1 is long-round-shape, and (rectangular two minor faces are isocentric circular arc, and as shown in Figure 3), head 1 lower support face is conical surface 11.All there is anti-corrosion layer on bolt head 1 and screw rod 2 surfaces--zinc-base chromate composite coating.

In the utility model, the wide 22mm of bolt head 1, the head length direction is the circular arc of diameter 40mm, head lower support face is the conical surface of 122 °, bolt head 1 is connected with screw rod 2 use 2mm small arc-shapeds, and bolt tail has the long screw thread of 48mm, and screw thread is the standard thread of M24 * 3-8g.

When the utility model uses, bolt is poured into the plum blossom hole 4 interior (as Fig. 4) of iron chair 3, iron chair plum blossom hole opening is long-round-shape (as shown in Figure 6), bolt clockwise rotates 90 ° (as shown in Figure 5), bolt head 1 is just in time vertical with slotted hole, and is stuck in the hole, and spring, plain washer and nut are installed after the bolt installation in position again, spring is fastened to standard torque, installs quick, convenient.

Claims

1. the T-shaped bolt of high-speed railway fastener, comprise bolt head and screw rod, it is characterized in that, bolt head is long-round-shape or rectangular, and head lower support face is conical surface; Described bolt head and screw surface all have anti-corrosion layer.

2. the T-shaped bolt of high-speed railway fastener as claimed in claim 1, is characterized in that, described anti-corrosion layer is zinc-base chromate composite coating.