CN101445067A

CN101445067A - Spring tensioner

Info

Publication number: CN101445067A
Application number: CNA2007101884724A
Authority: CN
Inventors: 周建科
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-26
Filing date: 2007-11-26
Publication date: 2009-06-03

Abstract

The invention belongs to a tension compensation device used in a catenary and a contact wire anchoring position of an electrified railway contact net, an urban light rail and a subway, in particular relates to a spring tensioner. The spring tensioner is characterized in that a spring mechanism (11) is composed of a wind spring (9) arranged inside a shell (1), an inner ring of the wind spring (9) is fixedly riveted on a shaft (10), and an outer ring is fixedly riveted with the shell (1); two ends of a right-left bearing (4) fix a spiral step pulley (3) on the shaft (10) by a spline; and a spiral groove provided on the spiral step pulley (3) winds a wire rope (5) from outside to inside, one end of the wire rope (5) is anchored inside the spiral step pulley (3) by a wedge, and the other end is connected with the anchoring catenary or the contact wire by a clevis end wedge-type clamp (6), a three-hole connecting plate (7) and an adjusting bolt (8). The spring tensioner has good safety, can eliminate rope breaking accident, keeps the tension of the catenary and the contact wire constant when the temperature varies, and is convenient to be mounted and used.

Description

Spring tensioner

Technical field

The device of the compensation tension force that the invention belongs in a kind of electrification railway contact net, urban light rail subway catenary and the contact wire place of casting anchor uses is meant a kind of spring tensioner especially.

Background technology

At present, in China's electrification railway contact net, urban light rail subway catenary and the contact wire place of casting anchor, adopt the aluminum alloy compensating pulley assembly, there is the problem of easily being stolen in this device on the one hand owing to when casting anchor, weigh down stone roller with iron in the tunnel.Take place simultaneously easily compensation rope and wheel along between eccentric wear, will take turns along grinding away or compensating to restrict rubbing, the hidden danger that causes the accident particularly being used for elevated formation level, is casted anchor on the bridge, as breaking, the bob stone roller can injure the pedestrian by a crashing object and cause the accident when the road of village or railroad crossing was arranged below.Next is that a kind of ratchet compensating device is used in the engineering, and the advantage of this compensation way is the driving efficiency height, and can be at lead, and braking reduced the accident scope when catenary broke, but wearing and tearing between compensation rope and bull wheel edge also can take place this compensation way.

Summary of the invention

The purpose of this invention is to provide a kind of spring tensioner, its safety is good, can eliminate the generation that rope yarn decreases disconnected accident, makes catenary and contact wire keep constant tension when temperature traverse, and easy to install.

The object of the present invention is achieved like this, design a kind of spring tensioner, it is characterized in that: which comprises at least the spring device 11 that is fixed on the axle and the spiral cone pulley 3 of spring device 11 both sides, spring device 11 is that sealed clockwork spring 9 constitutes in the shell 1 by placing, clockwork spring 9 its inner ring rivet clasps are on an axle 10, and outer ring and shell 1 rivet clasp are together; Shell 1 two ends are fixed on the axle 10 by bearing 4; A spiral cone pulley 3 is fixed to axle by spline respectively in bearing 4 two ends in the left and right sides; Spiral cone pulley 3 has plug helix, plug helix twines corrosion-resistant steel steel rope 5 from outside to inside, steel rope 5 one ends are anchored at spiral cone pulley 3 inside by chock, and the other end links to each other with cast anchor catenary or contact wire by ears wedge type clamp 6, three hole connecting plates 7, adjustable bolt 8.

Described left and right sides spiral cone pulley 3 is a symmetrical structure.

Describedly place that sealed clockwork spring 9 is by grease seal in the shell 1.

Described butter is to be injected by the oil hole on the shell 2, and there is over cap in oil hole 2 outsides.

During installation,, the steel rope winding number of turns on the spiral cone pulley of two ends is met the requirements according to the adjusting of ambient air temperature by adjustable bolt.When temperature descends, catenary, contact wire shorten, the stainless steel wire rope elongation, drive two ends cone pulley rotation, the steel rope number of turns that is wrapped on the cone pulley reduces, the stress point of steel rope on cone pulley is that steel rope line outlet place becomes big to cone pulley radius centered d, drive the axle rotation during cone pulley rotation, the axle rotation drives clockwork spring and tightens, it is big that output torque M becomes, clockwork spring output torque M and radius d are designed to the linear changing relation, i.e. M=Fd, thus can make catenary, contact wire tension force F keep invariable.During temperature build-up, catenary, contact wire are elongated, stainless steel wire rope shortens, and drives the cone pulley rotation, and the axle rotation drives clockwork spring and loosens, output torque M diminishes, simultaneously, the stainless steel wire rope number of turns that is wound on the cone pulley becomes big, and stress point diminishes to cone pulley radius of central line d, M and d keep linear change, and tension force F is constant.

The technical solution used in the present invention has taken into full account catenary, contact wire elongating or shortening when temperature traverse, and the rotation by step pulley shaft drives loosening of clockwork spring or tightens up, and brings the variation of output torque M, thereby has kept the invariable of tension force; Simultaneously, the clockwork spring of this compensator places in the shell and by lasting immersion oil, is difficult for getting rusty, thereby can prolongs the life-span of whole compensator; Two ends spiral cone pulley is a symmetrical structure, can keep the steel rope at two ends stressed evenly, and the line outlet place can eccentric wear, can avoid the generation of broken string accident; In addition, this spring tensioner is installed and used simple and convenient, and is antitheft and safety performance is better.

Description of drawings

The invention will be further described below in conjunction with the embodiment accompanying drawing.

Fig. 1 is the integral structure scheme drawing of spring tensioner embodiment;

Fig. 2 is the enclosure clockwork spring scheme drawing of spring tensioner embodiment.

Among the figure: 1, shell; 2, oil hole; 3, spiral cone pulley; 4, bearing; 5, steel rope; 6, ears wedge type clamp; 7, three hole connecting plates; 8, adjustable bolt; 9, clockwork spring; 10, axle, 11, spring device.

The specific embodiment

Embodiment as shown in Figure 1, spring tensioner comprise at least be fixed on axle on 10 spring device 11 and the spiral cone pulley 3 of spring device 11 both sides, spring device 11 is that sealed clockwork spring 9 constitutes in the shell 1 by placing, clockwork spring 9 its inner rings are riveted on the axle 10, and clockwork spring 9 outer rings and shell 1 are riveted together; Shell 1 two ends are fixed on the axle 10 by bearing 4; Two spiral cone pulleys 3 were to axle 10 about bearing 4 two ends in the left and right sides were fixed by spline respectively; Left and right sides spiral cone pulley 3 has plug helix, plug helix twines corrosion-resistant steel steel rope 5 from outside to inside, steel rope 5 one ends are anchored at spiral cone pulley 3 outsides by chock, twine from outside to inside through plug helix steel rope 5 other ends are linked to each other with cast anchor catenary or contact wire through ears wedge type clamp 6, three hole connecting plates 7, adjustable bolt 8.Left and right sides spiral cone pulley 3 is identical for symmetrical structure can guarantee that left and right sides spiral cone pulley 3 is subjected to steel rope 5 tension force, can not take place because the damage that steel rope 5 unbalance stress in the left and right sides produce.Placing shell 1 interior sealed clockwork spring 9 is by grease seal.Clockwork spring 9 is protected, and butter is to be injected by the oil hole on the shell 2, and there is over cap in filler opening 2 outsides.Can in time inject new butter, stressed bigger clockwork spring 9 is in the protection for a long time.

As shown in Figure 2, clockwork spring 9 places in the shell 1 sealed, its inner ring rivet clasp is on axle 10, outer ring and shell 1 rivet clasp are together, the outer 1 shell top of clockwork spring 9 has the oil hole 2 that is used to inject butter, oil hole 2 is furnished with thread sealed closure, seals after the shell 1 of clockwork spring 9 is filled with butter.

During installation,, the steel rope 5 winding number of turns on the two ends spiral cone pulley 3 are met the requirements according to the adjusting of ambient air temperature by adjustable bolt 8.When temperature descends, catenary, contact wire shorten, steel rope 5 elongations, drive 3 rotations of two ends spiral cone pulley, steel rope 5 number of turns that are wrapped on the cone pulley reduce, the stress point of steel rope 5 on cone pulley is that steel rope 5 line outlet places become big to cone pulley radius centered d, drive the axle rotation during cone pulley rotation, the axle rotation drives clockwork spring 9 and tightens, it is big that output torque M becomes, clockwork spring 9 output torque M and radius d are designed to the linear changing relation, i.e. M=Fd, thus can make catenary, contact wire tension force F keep invariable.During temperature build-up, catenary, contact wire are elongated, stainless steel wire rope 5 shortens, and drives the cone pulley rotation, and the axle rotation drives clockwork spring 9 and loosens, output torque M diminishes, simultaneously, stainless steel wire rope 5 number of turns that are wound on the cone pulley become big, and stress point diminishes to cone pulley radius of central line d, M and d keep linear change, and tension force F is constant.

The present invention is applied in the electrification railway contact net, urban light rail subway catenary and contact wire cast anchor the place, as a kind of device that compensates tension force, the technical scheme that adopts, catenary, contact wire elongating or shortening when temperature traverse have been taken into full account, rotation by step pulley shaft drives loosening of clockwork spring or tightens up, bring the variation of output torque M, thereby kept the invariable of tension force; Simultaneously, the clockwork spring of this compensator places in the shell and by lasting immersion oil, is difficult for getting rusty, thereby can prolongs the life-span of whole compensator; Two ends spiral cone pulley is a symmetrical structure, can keep the steel rope at two ends stressed evenly, and the line outlet place can eccentric wear, can avoid the generation of broken string accident; In addition, this spring tensioner is installed and used simple and convenient, and is antitheft and safety performance is better.

Claims

1, spring tensioner, it is characterized in that: which comprises at least the spring device (11) that is fixed on the axle and the spiral cone pulley (3) of spring device (11) both sides, spring device (11) is by placing clockwork spring (9) sealed in the shell (1) to constitute, its inner ring rivet clasp of clockwork spring (9) is on an axle (10), and outer ring and shell (1) rivet clasp together; Shell (1) two ends are fixed on the axle (10) by bearing (4); A spiral cone pulley (3) is fixed to axle by spline respectively in left and right sides bearing (4) two ends; Spiral cone pulley (3) has plug helix, plug helix twines corrosion-resistant steel steel rope (5) from outside to inside, steel rope (5) one ends are anchored at spiral cone pulley (3) inside by chock, and the other end links to each other with cast anchor catenary or contact wire by ears wedge type clamp (6), three hole connecting plates (7), adjustable bolt (8).

2, spring tensioner according to claim 1 is characterized in that: described left and right sides spiral cone pulley (3) is a symmetrical structure.

3, spring tensioner according to claim 1 is characterized in that: describedly place that sealed clockwork spring (9) is by grease seal in the shell (1).

4, spring tensioner according to claim 3 is characterized in that: described butter is to be injected by the oil hole (2) on the shell (1), and there is over cap in oil hole (2) outside.