CN2573311Y

CN2573311Y - Collector bow failure quick lowering pneumatic buffer valve

Info

Publication number: CN2573311Y
Application number: CN 02277343
Authority: CN
Inventors: 袁懿群; 旷政明
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-27
Filing date: 2002-09-27
Publication date: 2003-09-17
Anticipated expiration: 2012-09-27

Abstract

The utility model discloses a collector bow failure quick lowering pneumatic buffer device for an electric locomotive; particularly the utility model discloses a collector bow failure quick lowering pneumatic buffer valve and belongs to the field of buffer devices for railway vehicles. The aim of the utility model is to provide a novel collector bow failure quick lowering pneumatic buffer valve which has simple structure, and to overcome the defects that a pantograph and a vehicle roof can be damaged by the phenomenon of smashing top in quick bow lowering. The utility model is characterized in that the utility model is composed of an air chamber, an air cylinder, and a reversing spring, wherein, one end of the air cylinder is connected with the air chamber of which the interior is provided with an air limiting nozzle; the other end of the air cylinder is connected with the reversing spring which is provided with a colliding block; the interior of the air cylinder is provided with a reversing piston; one side of the air cylinder is communicated with an air intake passage and an air exhaust passage, and the other side of the air cylinder is communicated with a bow lifting air passage; the interiors of the air intake passage and the air exhaust passage are respectively provided with a regulating screw; the reversing piston is provided with a sealing ring. The utility model can be used as a collector bow failure quick lowering pneumatic buffer for electric locomotives.

Description

The fast sending down abnormally ascending of pantograph fault moves cushion valve

Technical field

The utility model relates to a kind of block of bow collector of electric locomotive fault and falls shock absorber soon, more particularly, relates to the moving cushion valve of the fast sending down abnormally ascending of a kind of pantograph fault, belongs to the rolling stock shock absorber.

Background technology

Chinese patent ZL99230788.0 discloses the fast automatic bow device that falls of a kind of pantograph and catenary fault, it is characterized in that bending, fall increase sensor and autonomous cruise speed system in the bow mechanism existing the liter, connector is between cushion valve on the locomotive top and liter bow cylinder, the output of falling the bow control cock automatically connects with pipeline inflatable sensor, the inflatable sensor is located at the pantograph both sides, two ends are provided with the spacing blow off valve of stagger, automatically fall the connecting line of bow control cock and shelf and make, be mainly used in electric locomotive and fall bow automatically by the insulating material polytetrafluoroethylene.

Though said apparatus can be realized automatic fast prompt drop bow, its weak point is its structure more complicated, lacks the fast prompt drop bow shock absorber in the car, and the generation of " pounding the top " phenomenon causes pantograph and locomotive top impaired when causing fast prompt drop to bend easily.

Summary of the invention

The purpose of this utility model is to provide a kind of block of bow collector of electric locomotive fault to fall shock absorber soon, more particularly, provide the moving cushion valve of the fast sending down abnormally ascending of a kind of pantograph fault simple in structure, later-model, the unlikely generation phenomenon of " pounding the top " when making fast prompt drop bow is to overcome above-mentioned shortcoming.

Technical solution of the present utility model is to adopt pressurized air the cylinder of reversing piston to be arranged and be located at the current limliting valve in the air chamber and the set screw in the air flue realizes rising bow and bow falls in fast cache by interior.

Of the present utility modelly be characterised in that it is made up of air chamber 1, cylinder 2 and commutation spring 4, one end of described cylinder 2 links to each other with the air chamber 1 of interior limited gas mouth 8, the other end links to each other with the commutation spring 4 that has collision block 5, reversing piston 3 is arranged in the cylinder 2, one side of cylinder 2 is connected with inlet channel 6 and exhaust duct 7, and opposite side is connected with liter bow air flue 13; In described inlet channel 6 and the exhaust duct 7, respectively be provided with a set screw 9.

Described reversing piston 3 is provided with seal ring 12.

The utility model compared with the prior art its advantage is: simple in structure, owing to the effect of cushion valve, phenomenon that unlikely generation " is pounded the top " avoids pantograph and locomotive top impaired when fast prompt drop bends.

Description of drawings

Accompanying drawing is a structural representation of the present utility model, wherein, and the 1-air chamber, 2-cylinder, 3-reversing piston, the 4-spring that commutates, the 5-collision block, 6-inlet channel, 7-exhaust duct, 8-current limliting valve, 9-set screw, 10-contact, the 11-normally closed contact, 12-seal ring, 13-rise the bow air flue, the bow air flue falls in 14-, the 15-open contact.

The specific embodiment

Referring to accompanying drawing, pressurized air enters air chamber 1 and cylinder 2 respectively through current limliting valve 8 and inlet channel 6, the air pressure that air chamber 1 produces promotes cylinder 2 interior reversing pistons 3 forward, and the collision block 5 of compression commutation spring 4 terminations contacts with contact 10, make open contact 15 closures, control path is connected, simultaneously, cylinder 2 is communicated with liter bow air flue 13, and air admission rises bow air flue 13 makes pantograph be in the arciform attitude of liter; And when et out of order such as pipeline leak gas; air chamber 1 inner air pressure descends rapidly; 4 promotion reversing pistons 3 of commutation spring reset backward; collision block 5 separates with contact 10; normally closed contact 11 closures; control path disconnects; simultaneously, rise the air of bow cylinder through a liter bow air flue 13; exhaust duct 7 bends air flue 14 discharges with falling, and bow then falls rapidly in pantograph; set screw 9 in inlet channel 6 and the exhaust duct 7 is to regulate in advance; make it reach a suitable position, unlikely impact bow net when pantograph rises bow, the unlikely generation phenomenon of " pounding the top " when falling bow; thereby realized rising the dual purpose of bow safety and health bow buffering, with the protection electrical network; pantograph and roof are not damaged.

Claims

1, the moving cushion valve of the fast sending down abnormally ascending of a kind of pantograph fault, it is characterized in that described pneumatic buffer valve is made up of air chamber (1), cylinder (2) and commutation spring (4), one end of described cylinder (2) links to each other with the air chamber (1) of interior limited gas mouth (8), the other end links to each other with the commutation spring (4) that has collision block (5), reversing piston (3) is arranged in the cylinder (2), one side of cylinder (2) is connected with inlet channel (6) and exhaust duct (7), and opposite side is connected with liter bow air flue (13); In described inlet channel (6) and the exhaust duct (7), respectively be provided with a set screw (9).

2, by the described cushion valve of claim 1, it is characterized in that described reversing piston (3) is provided with seal ring (12).