CN2190060Y - Non-shutting door - Google Patents

Abstract

The utility model provides a non-shutting angle cock, belonging to the important part of the main braking pipe passage of rolling stock. The non-shutting angle cock mainly solves that the wind in the braking pipe passage of a train is immediately cut off as long as any non-shutting angle cock in the braking pipe passage of the train is closed when the train is in work, enabling the residual pressure air in the main braking pipe passage of the train to be exhausted through a cock key, a steel ball valve and an air exhausting hole of the angle cock to cause the wheels to be locked by a brake valve shoe, thus to enable a vehicle or locomotive to take braking action. The driver or captain of the locomotive can find the angle cock closed in time from the braking action of the train, and takes corresponding measures immediately to guarantee the safe driving of the rolling stock.

Description

Non-shutting door

The utility model provides the anti-closing type angle cock after a kind of the improvement, it is railway locomotive, the vitals of car brakeing, when train is moving in the way, as long as when closing in the train braking pipeline any one anti-closing type angle cock, according to the automatic air brake principle, make train braking main line pressure air, discharge the train manage-style by the angle cock vent, cause vehicle or locomotive generation brake action, make the draught indicator pressure decay of locomotive and guard's van simultaneously, make the locomotive bus attendant, and the vehicle commander can both be from train generation brake action, and find that in time angle cock is closed, take corresponding measure to guarantee locomotive immediately, vehicle operating safety.

Prior art: the 18-1133-74 type angle cock (see figure 7) that China railways train (locomotive, vehicle) generally adopts is the automatic air brake equipment of taper faucet type, it is one of vitals of train braking pipeline, size according to the variation of train braking pipeline hollow atmospheric pressure, just increase air pressure the inflation of train braking pipeline is alleviated, reduce air pressure and make train braking pipeline decompression exhaust braking (brake).It is installed in the two ends of rolling stock brake piping, in order to open or to interdict locomotive and vehicle, air pressure path between vehicle and the vehicle.Locomotive of general run of thins passenger train marshalling draws 18 objective vehicles, and locomotive of freight train marshalling draws 40 vehicle lorries.When its weak point is closed when the TB-1133-74 type angle cock in the train marshalling list, brake hose internal pressure air can not be discharged, and brake pipe can not reduce pressure, and car brakeing can not be had an effect, angle cock is closed and is difficult for finding, can not play anti-effect of closing that is:.

In order to address this problem, common way is outside train (between locomotive and vehicle, vehicle and the vehicle) the brake hose internal pressure air exhaustion angle cock, is difficult to implement for TB-1133-74 type angle cock.

The purpose of this utility model is that a kind of anti-closing type angle cock will be provided, and it can be effectively outside train (locomotive and vehicle, vehicle and vehicle) the brake hose internal pressure air exhaustion angle cock.

Anti-closing type angle cock of the present utility model improves at 78-1133-74 type angle cock (tapered faucet type) exactly, its advantage 1, anti-closing type angle cock of the present invention have simple in structure, it is similar to 78-113-74 type angle cock (taper faucet type) to improve the back profile, and it is convenient to change.Opening and closing operations is preceding identical with improvement, in a single day the anti-closing type angle cock that is installed on locomotive, the vehicle closes, pressure air path in the brake hose between blocking locomotive and vehicle, vehicle and the vehicle makes in the flexible pipe excess pressure air by the discharge of angle cock vent.Promptly cause braking, make trainman's cycling start difficulty, and descend, can reach anti-purpose of closing at the wind table upward pressure of locomotive and guard's van; When two anti-closing type angle cocks are closed when 2, plucking car in the intermediate hose lingering remnants of past customs drain, inspection car personnel pluck the airduct personal safety not having to press; 3, the anti-closing type angle cock to close back air draft performance more excellent, decompression faster than locomotive brake gear service braking train pipeline, be slower than the vehicle commander again and draw the caboose valve emergency braking, can under train person in charge air feed situation, close angle cock at locomotive and can play brake action, prevent that again air draft is too fast, cause slack action excessive; 4,8 millimeters A holes on the plug core are arranged on 30 ° on off center line, when making mobile handgrip become 30 ° of angles with the valve body line of centers, angle cock begins exhaust, in the time of can preventing to close the angle cock excessive velocities because of operation, will produce the free air capacity deficiency and cause the anti-error of closing.

The utility model is because only need increase steel ball valve seat (4) steel ball valve (5) at former TB-1133-74 type angle cock (Fig. 7) in-core, plug core spring (6), locating dowel pin (7), effect spring (8), square arm of action (9), six kinds of accessories can reach by the angle cock vent discharges the train manage-style, makes vehicle or locomotive generation brake action.

Good effect of the present invention: it is one of vitals of pipeline that the China railways train generally adopts the automatic air brake equipment angle cock, it is installed in locomotive, car brakeing main line two ends, because improper the closing of angle cock causes train braking malfunctioning, make trainman's get out of hand ability, once cause repeatedly grave accident of system-wide passenger and freight train, and brought serious harm and loss for the country and people's lives and properties and railway transportation.

The invention provides the anti-closing type angle cock, in the train operation way, as long as close in the train braking pipeline, (when handgrip becomes 30 °-90 ° with the cock body line of centers) pressurized air is just by A hole in the plug core during any one anti-closing type angle cock, push the steel ball valve open through the steel ball valve seat, enter B hole in the left and right sides of square arm of action, it is external to discharge angle cock through endoporus C, make the decompression of train pipeline, reach train and brake immediately.

The concrete structure of utility model is provided by following embodiment and accompanying drawing.See Fig. 1 (close stance), Fig. 2 (open stance).By: handgrip (1), cock body (2), plug core (3), steel ball valve seat (4), steel ball valve (5), plug core spring (6), locating dowel pin (7), effect spring (8), square arm of action (9), effect seat (10).Fig. 1 specification digest figure of the present invention promptly is a master map.

Its operation order branch: close stance (Fig. 1) and two positions of open Fig. 2 are by the figure explanation.Close stance (Fig. 1): its state of angle cock is open row pore A blocking pore D, changes close stance into after from opening.It is characterized in that locomotive and vehicle, be in braking state between vehicle and vehicle and mention the moving plug door of handgrip inverse time needle plate handgrip, plug core and then rotates (handgrip becomes 30 °-90 ° with the cock body line of centers), because the steel ball valve seat is sintering integrated again in the embedding plug core, so plug core one rotates, the steel ball valve seat also and then rotates, the steel ball valve seat rotates the locating dowel pin just make on the square arm of action along with the positioning groove inclined-plane (11) on the steel ball valve seat skids off, make square arm of action leave the steel ball valve, the steel ball valve has lost the applied pressure of arm of action, make the pressurized air of the train flexible pipe in the plug core, by 8 millimeters A holes on the plug core body, push the steel ball valve open through the steel ball valve seat and enter B hole in the left and right sides of square arm of action, external through endoporus C discharge angle cock, make the decompression of train pipeline reach train and brake immediately.So it is to allow to roll over the plug door anything but to be in close stance that train is in operation.

Its state of open stance (see figure 2) angle cock is open pores D blocking deflation hole A, and as when close stance changes open stance into, its feature locomotive and vehicle are in starting state between vehicle and vehicle.As long as the up time needle plate returns plug door handgrip (when handgrip is consistent with the cock body line of centers), driving plug core and steel ball valve seat goes back to, the locating dowel pin of square arm of action is slided back in the positioning groove (11) along the inclined-plane on the steel ball valve seat, and square arm of action heads on the steel ball valve again, has closed the air draft of train pipeline.

The present invention implements by following operation: Shi Douying operation plug door handgrip (1) is opened or closed to angle cock, is open stance when the handgrip of plug door is consistent with the line of centers of cock body.When the handgrip of plug door becomes 90 ° with the cock body line of centers is close stance, discharges the pressurized air of train flexible pipe by deflation hole.

Other description of drawings: Fig. 3 is plug core (3) and the conjuncted figure of steel ball valve seat (4), and the steel ball valve seat is to embed in the plug core sintering integrated again (seeing Fig. 3-2).Steel ball valve seat lower end is provided with positioning groove inclined-plane (11), its effect is locating dowel pin to be slided into skid off from the positioning groove inclined-plane, slide into to locating identical, skid off to misfitting, Fig. 3-1 is the section-drawing of F-F, the A hole is that 30 ° of positions of off center line are provided with, and the A hole communicates with hole, middle garden with the D hole.Its effect is discharged cock body (2) compressed air.

Fig. 4 is an effect seat (10), and the centre does not have square arm of action patchhole (12).

Fig. 5 is square arm of action (9), and the bar both sides are provided with the B hole, and the B hole connects with endoporus C.(13) be the locating dowel pin patchhole.

Fig. 6 is locating dowel pin (7).

Fig. 7 is the rotary angle cock of TB-1133-74 type taper.

Claims (6)

1, a kind of anti-closing type angle cock, by handgrip, cock body, plug core, steel ball valve seat, steel ball valve, semen spring, locating dowel pin, effect spring, square body bar, the effect seat is formed its feature: by handgrip rotation plug core; There is the positioning groove inclined-plane plug core lower end, is embedded with the steel ball valve seat; Between steel ball valve seat and the square arm of action steel ball valve is arranged; On the square arm of action locating dowel pin is arranged.

2, anti-closing type angle cock according to claim 1, its feature: the steel ball valve links to each other with bar with square body.

3, anti-closing type angle cock according to claim 1, its feature: locating dowel pin links to each other with plug core positioning groove inclined-plane.

4, anti-closing type angle cock according to claim 1, its feature: have the steel ball valve to coincide up and down between steel ball valve seat and the square arm of action.

5, anti-closing type angle cock according to claim 1, its feature: plug core partial center line has the A hole for 30 °-90 °.

6, anti-closing type angle cock according to claim 1, its feature: square arm of action both sides are provided with the B hole, and the B hole communicates with endoporus C.

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