CN2226005Y

CN2226005Y - AC electric switch

Info

Publication number: CN2226005Y
Application number: CN 95212626
Authority: CN
Inventors: 陈子根; 诸葛战斌
Original assignee: ZHEJIANG SIGNALLING SET FACTORY
Current assignee: ZHEJIANG SIGNALLING SET FACTORY
Priority date: 1995-05-26
Filing date: 1995-05-26
Publication date: 1996-05-01
Anticipated expiration: 2005-05-26

Abstract

The utility model discloses an AC electric switch, which is mainly composed of an electric motor, a speed reducer, a big and a small gears, a biaxial gear assembly, a triaxial gear assembly, a slider assembly, a housing, a circuit controller, an operating mechanism for a handle, a sleeve assembly for a spring, etc. The utility model uses the AC electric motor as the power. The housing is designed into a closed type structure. The AC electric motor is sealed at the head part of the housing. The utility model has the advantages of compact structure, reasonable design, low manufacture cost, and safe operation. Besides, no maintenance of the electric switch can be realized, and the investment and the cost can also be reduced.

Description

A.C. point machine

The utility model relates to a kind of railway switch switching device.

What at present, China railways track switch was extensively adopted is the direct current drive switch machine.This direct current drive switch machine with 160 volts of power supplys of specified direct current as its action power, and direct supply must could obtain by a whole set of commutation system, therefore, in the electric concentrated signal power source equipment of the large-scale station that this direct current drive switch machine is installed, two DC power supply panel must be set specially, as the power supply of its action, this has strengthened the construction investment and the use cost at station undoubtedly.In addition, the direct current drive switch machine also must be done regular inspection, adjustment and maintenance to the commufafor carbon brush of electrical motor.Like this, not only increased the work capacity of safeguarding, and, also might cause and jeopardize safe phenomenon of the failure.

In view of the problem of above-mentioned existence, the purpose of this utility model provide a kind of simple in structure, use cost is low, and does not need A.C. point machine that motor is partly keeped in repair.

The technical solution of the utility model is achieved like this: the power of electric switch machine, adopt alternating current dynamo.Secondly, the casing of switch machine is designed to closed structure, and alternating current dynamo is encapsulated in the head of switch machine.Like this, both can save the essential rectifying installation of a cover direct current drive switch machine, reduce the volume of switch machine, reduce its construction investment.Simultaneously, also exempted in the direct current drive switch machine to dc motor commutator regular detection, the maintenance work that must carry out, thereby, improved its functional reliability effectively.

Specific embodiments of the present utility model is as shown in drawings:

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the birds-eye view of the utility model when removing cover

Fig. 3 is transmission principle figure of the present utility model

Fig. 4 is the structural representation of slider assembly of the present utility model

Below in conjunction with accompanying drawing specific embodiments of the present utility model is elaborated:

A.C. point machine includes parts such as motor 1, retarder 2, miniature gears 3, big gear wheel 4, two shaft gear assemblies 5, three shaft gear assemblies 7, slider assembly 8, cover 9, casing 10, circuit controller 11, stick control mechanism 12 and spring spool assembly 13.Motor 1 adopts alternating current dynamo, and casing 10 is a closed structure, and alternating current dynamo 1 is encapsulated in the head of casing 10.Between two shaft gear assemblies 5 and three shaft gear assemblies 7, be provided with friction clutch 6, it can prevent electric switch machine effectively in overload or midway during et out of order, the safety of protection motor.Stick control mechanism 12 is made up of bar handle 14, handle locking device 15, handle arm revolving gear 19.Being meshed on handle arm revolving gear 19 and the three shaft gear assemblies 7 with the coaxial mounted bevel gear 18 of big gear wheel.Slider assembly 8 is made up of throw rod 20, movable link stopper 21, link stopper 22 and slider 23.Slider 23 is provided with tooth bar 17, and tooth bar 17 is meshed with big gear wheel on the three shaft gear assemblies 7, to guarantee the circular movement of big gear wheel is changed into the straight-line motion of tooth bar.Thereby realized seesawing of slider and throw rod.Spring spool assembly 13 is provided with spring 16, and spring 16 is connected with big gear wheel on the three shaft gear assemblies 7, and it can play the effect of locking big gear wheel effectively.

The mode of operation of A.C. point machine is achieved like this:

When track switch needs turn-out track, circuit controller 11 starts alternating current dynamo 1 and rotates, and by retarder 2, miniature gears 3, big gear wheel 4, two shaft gear assemblies 5, three shaft gear assemblies 7 and tooth bar 17, the circular movement of alternating current dynamo 1 is converted into the straight-line motion of tooth bar 17, promote slider 23 and travel forward, throw rod 20 also travels forward thereupon.At this moment, movable link stopper 21 is deviate from from locked position (Fig. 4 solid line position), also travels forward thereupon.When movable link stopper 21 moved to locked position (Fig. 4 dotted line position), promptly throw rod 20 had been finished the traverse of the regulation that travels forward, and at this moment, circuit controller 11 disconnects the contact of alternating current dynamo, and action stops.Electric switch machine has promptly been finished whole turn-out track action.

After movable link stopper 21 entered locked position, tongue and matrix rail promptly were in closely connected position.Out-of-date in order to prevent the train pressure, former thereby cause link stopper 21 to throw off lockings to cause the tongue displacement because of vibration etc., 16 on spring on the spring spool assembly 13 can play the effect of the big gear wheel reversing that stops on the three shaft gear assemblies 7 effectively, thereby guaranteed that movable link stopper 21 is in locked position all the time, guarantees that vehicle safety passes through.

When electric switch machine in the turn-out track process, run into that tongue is clamped by foreign matter or tongue pressure surpasses the traverse permissible value, and can not locking the time, at this moment, friction clutch 6 works, motor is in the state of idle running, thereby has protected motor effectively.

If, when needing to adopt stick control mechanism to carry out changing points, then at first open handle locking device 15, bar handle 14 is rotated 180 °, 19 of handle arm revolving gears drive bevel gear 18 rotates the big gear wheel on the three shaft gear assemblies 7, and the circular movement of big gear wheel is converted into the straight-line motion of tooth bar by tooth bar 17, and driving slider 23 then, throw rod 20 is finished the turn-out track action, track switch can be converted.

A.C. point machine compact conformation, reasonable in design, low cost of manufacture, safe and reliable to operation, it has not only realized the nothing maintenanceization of electric switch machine, and has reduced the investment and the use cost of engineering widely.

Claims

1, a kind of A.C. point machine that includes motor (1), retarder (2), miniature gears (3), big gear wheel (4), two shaft gear assemblies (5), three shaft gear assemblies (7), slider assembly (8), cover (9), casing (10), electric machine controller (11), stick control mechanism (12) and spring spool assembly (13), the motor (1) that it is characterized in that this A.C. point machine adopts alternating current dynamo, casing (10) is a closed structure, and alternating current dynamo (1) is encapsulated in the head of casing (10).

2, A.C. point machine according to claim 1 is characterized in that being provided with friction clutch (6) between described two shaft gear assemblies (5) and the three shaft gear assemblies (7).

3, A.C. point machine according to claim 1, it is characterized in that described slider assembly (8) is made up of throw rod (20), movable link stopper (21), link stopper (22) and slider (23), on slider (23), be provided with tooth bar (17), tooth bar (17) is meshed with the big gear wheel of three shaft gear assemblies (7).