CN2096502U

CN2096502U - Safety close device for folding plug door of train

Info

Publication number: CN2096502U
Application number: CN 91212957
Authority: CN
Inventors: 钟建国
Original assignee: CHANGSHA RAILWAY COLLEGE
Current assignee: CHANGSHA RAILWAY COLLEGE
Priority date: 1991-07-05
Filing date: 1991-07-05
Publication date: 1992-02-19

Abstract

The utility model relates to a safety close device for folding plug door of railway locomotive and carriage, which is composed of a cylindrical air cell, a piston, springs and a spring seat, wherein, the cylindrical air cell is arranged in the cone of the upper part of a cock core; the piston is arranged in the air cell, and the springs are sheathed on a piston rod. Two air holes in the air cell are respectively communicated with a main airway and atmospheric air; a locating rod is fixedly connected to the piston; a seal ring is arranged between the piston and the wall of the air cell, and the cock body which is corresponding to the air cell is provided with a lock hole which is matched with the piston rod. The utility model makes use of gas pressure in the main airway and pressure difference variation between spring tensions to achieve the automatic control of the on and off of the folding plug door. The utility model has the advantages of simple structure, convenient processing, convenient assemblage, low cost and high safe performance.

Description

Safety close device for folding plug door of train

The utility model relates to the angle cock automatic locking apparatus of using in a kind of later-model rolling stock.

Now the angle cock that uses in the rolling stock is not owing to there is blocking device, is in operation very easily improper closing to be taken place and cause brake failure, to such an extent as to a lot of accidents took place.And according to the Chinese patent (patent No.: 89211557.2) provide a kind of angle cock level pressure self-locking device, can when train has air pressure, lock angle cock, can guarantee that the train pipe is unimpeded, prevented the generation of accident.But its complex structure, processing, maintenance inconvenience.

The purpose of this utility model is that a kind of structure of searching is simpler, processing, the novel more easily improper device of closing of train coupling cock that prevents of use.

The utility model is by on existing angle cock core top a spring barrel being installed, utilize air pressure in the plug core and spring force between the two difference of pressure and realize the automatically controlled of angle cock Push And Release.

Describe below in conjunction with accompanying drawing.

Fig. 1 is the generalized section of train coupling cock safety shutdown device.

The utility model is by a piston ［ 3 ］ that is arranged in the cylindricality air chamber ［ 2 ］ of plug core ［ 1 ］ upper end cone and places air chamber, spring ［ 4 ］ and spring perch ［ 5 ］ are formed, bottom one side of air chamber ［ 2 ］ has the interior main airway ［ 7 ］ of a pore ［ 6 ］ and plug core ［ 1 ］ to communicate, the opposite side on air chamber ［ 2 ］ top also has a pore ［ 8 ］ and atmosphere UNICOM, described spring ［ 4 ］ and spring perch ［ 5 ］ are enclosed within on the piston rod, piston ［ 3 ］ is with a seal ring ［ 9 ］ with the contact position of air chamber ［ 2 ］ wall, be connected with a positioning rod ［ 10 ］ at the top of piston, locate a lockhole ［ 12 ］ that is complementary with piston rod with the corresponding cock body of air chamber ［ 2 ］［ 11 ］.

Principle of work of the present utility model is as follows: when the gaseous tension in the main airway ［ 7 ］ is higher, high pressure gas entered air chamber ［ 2 ］ along pore ［ 6 ］ and acted on the piston ［ 3 ］ this moment, at this moment, act on pressure on the piston greater than spring tension, thereby piston will be under the promotion of high pressure gas to the right (as figure) move, piston rod is inserted in the lockhole ［ 12 ］, plug core promptly is located in this, can not rotate, and train enforcement braking realizes by decompression, but under the maximum decompression situation when its conventional brake, the tension force of spring still deficiency overcomes and remains air pressure this moment and act on pressure on the piston ［ 3 ］, piston rod is still kept motionless, thereby plug core is still not rotatable this moment, thereby the improper situation of closing can not appear in angle cock when guaranteeing normally to stop, when train need be plucked, when hanging operation, the driver can handle a damper brake again makes the pressure in the train pipe be lower than conventional maximum pressure relief value, at this moment piston rod bounces back under the effect of spring tension, and then this moment, rotatable plug core fulfiled assignment.Piston is subjected to the support of radius stay and stops at and air chamber one end maintenance a distance in retraction process, can't reuse not make piston block pore ［ 6 ］.

The utility model is simple in structure, processing, easy to assembly, cheap, and performance is safe and reliable.Can be widely used on various railway locomotives, the vehicle, also can in the production of angle cock, maintenance, refitting engineer, use.Its economic benefit and social benefit are very significant.

Claims

1, a kind of train coupling cock safety shutdown device, by cylindricality air chamber [2] with place piston [3] among the air chamber, spring [4] and spring perch [5] are formed, it is characterized in that described cylindricality air chamber [2] is positioned at plug core [6] upper end cone, one side of air chamber bottom has a pore [6] to communicate with main airway [7], the opposite side on air chamber top also has an air extractor vent [8] and atmosphere UNICOM, spring [4] and spring perch [5] are enclosed within on the piston rod, be mounted with seal ring [9] in the contact position of piston and air chamber wall, affixed a positioning rod in the top of piston [10] is being located a lockhole [12] that is complementary with piston rod with the corresponding cock body of air chamber [11].