CN201357770Y

CN201357770Y - Suspension pulley

Info

Publication number: CN201357770Y
Application number: CNU200920032105XU
Authority: CN
Inventors: 周建科
Original assignee: Individual
Current assignee: Xiao Wei; Zhou Jianke
Priority date: 2009-03-05
Filing date: 2009-03-05
Publication date: 2009-12-09
Anticipated expiration: 2019-03-05

Abstract

The utility model belongs to a single-track tunnel inner suspension carrier cable on an electrified railway contact net head span suspension, and particularly provides a suspension pulley. The suspension pulley comprises a suspension pulley body, bearings, a framework, a connecting piece and a wheel shaft, and is characterized in that a double-bear structure is arranged between the suspension pulley body (14) and the wheel shaft, and two sets of bearings (15) are embedded between the suspension pulley body (14) and the wheel shaft (20). By changing the large clearance fit between the pulley and the shaft and solving the problem that the prior suspension pulley, when acts upon by a force, is subjected to undulation movement, inclination and clamping stagnation, the utility model ensures that the carrier cable, when moving owing to environmental temperature changes, can drive the pulley to rotate flexibly, thereby reducing abrasion of the carrier cable, and guaranteeing safe operation of electrified railway.

Description

Suspension pulley

Technical field

The utility model belongs on the contact nets in electrified railways headspan suspension, hangs catenary, definite a kind of suspension pulley of saying so in the single track tunnel.

Background technology

At present, in the contact nets in electrified railways system on the headspan suspension, used suspension pulley in the single track tunnel, porose in the middle of its wheel body, directly be through on the wheel shaft, tolerance clearance is bigger between wheel body and the wheel shaft, wheel body can be about on the wheel shaft string moving, because hanging, catenary has horizontal direction component, particularly on curve, horizontal component of force is bigger, and horizontal force makes wheel body be close to guide roller frame to a side shifting, thereby make pulley generation skew, clamping stagnation, can not rotate flexibly.Because catenary during always with variation of ambient temperature, moves on the pulley race.Thereby catenary can not normally drive pulley and move together, and wearing and tearing strengthen between catenary and the race thereby make, and rub catenary in the course of time, and the broken string accident takes place, and bring potential safety hazard for the normal operation of electrified railway.

Summary of the invention

For the stressed easy skew of the suspension pulley wheel body that overcomes said structure, clamping stagnation, the phenomenon that can not rotate flexibly, the utility model provides a kind of novel suspension pulley, and it can prevent that string is moving, increases reliability and safety, increases alerting ability and increases the service life.

The purpose of this utility model is to realize like this, design a kind of suspension pulley, it comprises suspension pulley wheel body, bearing, framework, attaching parts, wheel shaft, it is characterized in that: be dual bearing structure between suspension pulley wheel body and the wheel shaft, inlay 2 cover bearings between suspension pulley wheel body and the wheel shaft.

Described 2 cover bearing inner rings are fixedly connected on the wheel shaft, and 2 cover outside racees are captiveed joint with adjacent suspension pulley wheel body endoporus separately; Have the shaft shoulder, shaft shoulder both sides that 1 cover bearing is respectively arranged in the middle of the suspension pulley wheel shaft, the height of the shaft shoulder can block bearing inner ring.

Described suspension pulley wheel body is fixedly connected with the suspension pulley roller bearing end cap by attaching parts, has boss, boss to stretch in the suspension pulley wheel body retaining in the outer shroud side of bearing on the roller bearing end cap, thus guarantee bearing can not about string moving.

Described bearing is the deep groove ball bearing that single face has cover of dust.

Described framework is a left and right sides length framework, is fixed on the U type framework by attaching parts.

Characteristics of the present utility model are: changed the big free-running fit between wheel and the axle on this suspension pulley structure, adopt dual bearing structure to be connected between wheel body and the axle, overcome that the stressed back string of former suspension pulley wheel body is moving, deflection, catching phenomenon, thereby guarantee when catenary is moved by variation of ambient temperature, can drive pulley rotates flexibly, alleviate the wearing and tearing of catenary, guaranteed the electrified railway safe in operation.The suspension pulley of this structure, wheel body rotates flexibly, and driving efficiency can reach more than 97%, can drive wheel body when catenary is moved by temperature traverse and freely rotate, thereby alleviate the wearing and tearing of catenary, has protected catenary.

Description of drawings:

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.

Fig. 1 is the example structure scheme drawing;

Fig. 2 is the lateral plan of Fig. 1.

Among the figure: 1, suspension hook; 2, packing ring; 3, nut; 4, spring cotter; 5, sleeve pipe; 6, bolt; 7, nut; 8, packing ring; 9, bullet pad; 10, spring cotter; 11, U type framework; 12, lack framework; 13, slotted countersunk flat head screw; 14, wheel body; 15, bearing; 16, end cap; 17, bullet pad; 18, nut; 19, lubricating cup; 20, wheel shaft; 21, long framework; 22, catenary; 23, the shaft shoulder; 24, bearing cap shim boss.

The specific embodiment

Embodiment as shown in Figure 1 and Figure 2, it is made up of this suspension pulley suspension pulley wheel body 14, bearing 15, framework, attaching parts, wheel shaft 20, be dual bearing structure between suspension pulley wheel body 14 and the wheel shaft 20, promptly inlay 2 cover bearings 15 between suspension pulley wheel body 14 and the wheel shaft 20.2 cover bearings, 15 inner rings are fixedly connected on the wheel shaft 20, captive joint with adjacent suspension pulley wheel body 14 endoporus separately in 2 cover bearings, 15 outer rings; In the middle of the wheel shaft 20 of suspension pulley wheel the shaft shoulder 23, the shaft shoulder 23 being arranged is a boss, and it keeps off between left and right sides bearing 15, and its height can block ring in the bearing 15.Encircling the both sides that are embedded in the shaft shoulder 23 in the bearing 15 is stopped by the shaft shoulder 23, bearing 15 outer shrouds match with the endoporus of wheel body 14, porose on the end cap 16, on the wheel body 14 tapped bore is arranged, Kong Houyu wheel body 14 upper screwed holes that slotted countersunk flat head screw 13 passes on the end cap 16 match, end cap 16 and wheel body 14 are fixed together, the bearing cap shim boss 24 that extend in wheel body 14 endoporus is arranged on the end cap 16, stop the outer shroud side of bearing 15, after hole on long framework 21 and the short framework 12 is stretched out at wheel shaft 20 two ends, fixing by bullet pad 17 and nut 18, wheel shaft 20 has step at length frame aperture place, so that nut 18 is not close to end cap 16 when fastening, the length framework upper respectively has two holes to link to each other with two holes, every limit on the U type framework 11, by bolt 6, nut 7, packing ring 8, bullet pad 9 is fixing, and sealed by spring cotter 10, U type framework 11 upper plane are porose, and suspension hook 1 passes behind the hole fixing and be connected by spring cotter 4 and seal by packing ring 2 and nut 3, whole parts are fixed together, and suspension hook 1 can rotate freely flexibly and can not come off.

There is bearing hole to be used for cooperating on the pulley wheel body 14 with outside race.The shaft shoulder 23 is arranged in the middle of the wheel shaft 20, prevent bearing 15 on axle, go here and there moving, 4 taper holes of rectangular distribution on bearing cap shim (being end cap) 16,4 tapped bore of rectangular distribution on the pulley wheel body 14, end cap 16 is fixed together by 4 slotted countersunk flat head screws 13 and pulley, rotates together with pulley.Catenary 22 varies with temperature and can drive wheel body 14 when mobile, and bearing 15 outer shrouds and end cap 16 rotate together, on the axle oil hole is arranged simultaneously, relies on lubricating cup 19 to inject butter, and protection bearing 15 rotates flexibly.Porose on the sleeve pipe 5, be enclosed within on the bolt 6, when preventing that bolt 6 is fastening, U type framework 11 inwardly shrinks.Present embodiment middle washer 2, nut 3 select M14; Nut 7, nut 18 select M12, nut M10; Bolt 6 usefulness M10, bullet pad 9 are used M10.

This novel suspension pulley, its suspension pulley bearing cap shim is fixed on the wheel body 14 by slotted countersunk flat head screw 13, boss on the end cap 16 extend in the wheel body 14 and blocks outer race, restriction bearing 15 is moving to the guest performer, end cap about 16 has long framework 21 and short framework 12, axis hole is arranged on the framework, wheel shaft 20 penetrate behind the framework of the left and right sides by about bullet pad 17 and nut fix, be drilled with oil hole in the middle of the wheel shaft 20, wheel shaft 20 1 ends communicate with oil hole by the lubricating cup 19 that is threaded, and are used for to injecting butter in the bearing 15.Bearing 15 prevents that for having the deep groove ball bearing of single face cover of dust dust from entering.Left and right framework upper has 2 holes, and 2 holes are also arranged about U type framework, and two bolts by M10 couple together U type framework and left and right length framework, sleeve pipe is arranged in the middle of the M10 bolt, porose on the sleeve pipe, be enclosed within when preventing binding bolt on the M10 bolt, U type framework inwardly shrinks.It is easy to loading and unloading to connect assurance like this, is convenient to catenary and enters in the wheel body arc groove.Because between wheel body 14 and the wheel shaft 20 is dual bearing structure, and there is the shaft shoulder 23 to block ring in the bearing 15 in the middle of the wheel of suspension pulley and the axle.So it cooperates tight wheel body deflection, clamping stagnation not to take place, can rotate flexibly.

Claims

1, suspension pulley, it comprises suspension pulley wheel body, bearing, framework, attaching parts, wheel shaft, it is characterized in that: be dual bearing structure between suspension pulley wheel body (14) and the wheel shaft (20), inlay 2 cover bearings (15) between suspension pulley wheel body (14) and the wheel shaft (20).

2, suspension pulley according to claim 1 is characterized in that: described 2 cover bearing (15) inner rings are fixedly connected on the wheel shaft (20), captive joint with adjacent suspension pulley wheel body (1 4) endoporus separately in 2 cover bearing (15) outer rings; Have the shaft shoulder (23), the shaft shoulder (23) both sides that 1 cover bearing (15) is respectively arranged in the middle of the suspension pulley wheel shaft (20), the height of the shaft shoulder (23) can block bearing inner ring.

3, suspension pulley according to claim 1, it is characterized in that: described suspension pulley wheel body is fixedly connected with suspension pulley roller bearing end cap (16) by attaching parts, bearing cap shim boss (24) is arranged on the roller bearing end cap (16), and bearing cap shim boss (24) stretches into the outer shroud side that keeps off in the wheel body at bearing (15).

4, suspension pulley according to claim 1 is characterized in that: described bearing (15) is the deep groove ball bearing that single face has cover of dust.

5, suspension pulley according to claim 1 is characterized in that: described framework is a left and right sides length framework, is fixed on the U type framework by attaching parts.

6, suspension pulley according to claim 1, it is characterized in that: be dual bearing structure between described suspension pulley wheel body (14) and the wheel shaft (20), the shaft shoulder (23) is arranged in the middle of the suspension pulley wheel shaft (20), encircling the both sides that are embedded in the shaft shoulder (23) in the bearing (15) is stopped by the shaft shoulder (23), bearing (15) outer shroud matches with the endoporus of wheel (14), end cap (16) is gone up porose, wheel body has tapped bore on (14), Kong Houyu wheel body (14) upper screwed hole that slotted countersunk flat head screw (13) passes on the end cap (16) matches, end cap (16) and wheel body (14) are fixed together, the bearing cap shim boss (24) that extend in wheel body (14) endoporus is arranged on the end cap (16), stop the outer shroud of bearing (15), after hole on long framework (21) and the short framework (12) is stretched out at wheel shaft (20) two ends, fixing by bullet pad (17) and nut (18), wheel shaft (20) has step at length frame aperture place, so that it is not close when nut (18) is fastening to end cap (16), the length framework upper respectively has two holes, every limit on two holes and the U type framework (11) to be connected and fixed, U type framework (11) upper plane is porose, and suspension hook (1) passes behind the hole fixing with nut (3) and be connected by spring cotter (4) and seal by packing ring (2); End cap (16) is gone up 4 taper holes of rectangular distribution, and wheel body (14) is gone up 4 tapped bore of rectangular distribution, and end cap (16) is fixed together by 4 slotted countersunk flat head screws and pulley, runs up with pulley one; Catenary (22) varies with temperature and can drive wheel body (14) when mobile, and bearing (15) outer shroud and end cap (16) rotate together, on the wheel shaft (20) oil hole is arranged simultaneously, relies on lubricating cup (19) to inject butter, so that protection bearing (15) rotates flexibly; Sleeve pipe (5) is gone up porose, is enclosed within on the bolt (6), and when preventing that bolt (6) is fastening, U type framework (11) inwardly shrinks.