JPS6328827B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a slip blocker intended to improve reliability and security. In the case of single-track operation, measures are needed to prevent rear-end collisions with following trains and head-on collisions with oncoming trains. For this reason, trains running in the blocked section are required to carry designated slips on their belts. The pass blockers are used to store these passes, and as shown in Figure 1, they are installed at stations A and B at both ends of the block section. Passport blocker at one station
Block operation is carried out safely by extracting one ticket for that section from Ma and Mb and issuing it to the train as proof of operating permission. Therefore, it is said that a ticket blocker must satisfy the following conditions. In other words, (1) a ticket cannot be taken out unless the stations at both ends of the block section handle the ticket blockers in common, and (2) the tickets cannot be taken out from a set of ticket blocks at the stations at both ends of the block section. Only one voucher can be taken out; (3) the next voucher cannot be taken out unless the previously taken voucher is placed in the voucher blocker; (4) vouchers of different types cannot be stored. , etc. Figure 2 shows the appearance of the current pass blocker. The ticket blocker is equipped with a voltage detector G, a transmitting voltage sensor P ₁ , and an unlocking voltage sensor P ₂ on the outside of its outer box 1, and has an upper handle 2.
A lower handle 3 is provided so as to be slidable inside and outside the outer box 1. FIG. 3 shows a schematic structure inside the outer box 1, and FIG. 4 shows a block diagram of the current pass blockers installed at stations A and B. The main components will be explained below. (1) There are two types of electricity: transmitting electricity ( _P1) and unlocking electricity (P2 ₎ . The transmitter _P1 is for sending a current to operate the relay 4 of the other party's blocker. The transmit circuit is configured by pressing down on the push button. When the push button is not operated, the transmitting circuit is cut off, but the transmitting circuit from the other station is always connected. The unlocking power switch _P2 constitutes a circuit that unlocks its own lower handle 3 by pressing down on the push button while the relay at its own station is operating in response to the transmitted current from the other station, and also It switches between its own transmitting circuit (bell circuit) and unlocking circuit. (2) Voltage detector G In addition to knowing whether the current in the transmitting circuit is fully open to pass through the ticket at your own station or the current flowing to the other station, it also indicates whether there is a break in the circuit, and is a type of bipolar detector. It is an ammeter that indicates sex. (3) Upper handle 2. This is the handle for delivering the ticket into the blocker. A circular hole 5 into which a ticket is fitted and a ticket sorting protrusion are provided on the plate surface of the rectangular flat plate. When the receipt 7 is inserted into this hole 5 and the handle is pushed into the outer box 1, the delivered receipt aligns with the hole provided in the top plate of the outer box 1 and falls, and its weight pulls up the vertical can 8. , the lock of the lower puller 3 which is fully opened or partially opened is mechanically unlocked. (4) Invoice gutter (channel) 9, Invoice gutter 9 is the invoice 7 delivered from the upper handle 2
It is an inclined gutter that receives and slides the water, conveys it to the lower handle 3, and accumulates it. (5) The form tongue 10, the vertical hook 8, the support hook 11, the hanging hook 12, and the form tongue 10 are for temporarily receiving the form 7 delivered through the upper handle 2. Invoice 7
When it rests on the slip tab 10, it rotates under its weight and pulls up the vertical hook 8, and this action pulls up the half-open hook 13. However, since this action is momentary, it is necessary to maintain this state until the lower handle 3 is retracted. The support hook 11 is for supporting and mechanically holding the vertical pin 8. The suspension hook 12 is provided to support the vertical lock 8 to prevent it from being pulled up while the upper handle 2 is being pulled out, since if the slip tab 10 is pressed with a wire or the like, the lock will be unlocked incorrectly. . (6) Lower handle 3 The lower handle 3 is a handle for taking out the vouchers 7 accumulated in the voucher gutter 9 from the blocker.
The lower handle 3 has grooves 15a to 15e in which the half-open hook 13 and fully open hook 14 fall in each of the fixed, half-open, and fully open positions to lock the handle, and a groove 15f for the support hook 11. A plurality of grooves are provided in series on the plate surface, and there is a tray 3a on the plate surface for taking out the slips 7, and the slips 7 placed therein are taken out one by one. (7) Fully open coil 16, fully open hook 14, and an electromagnet used to fully open the lower handle 3. It is indirectly controlled by the transmission current from the partner station, and operates the fully open hook 14 and others. The fully open hook 14 is operated only by the armature of the fully open coil 16, and the half open hook 1 is operated at its tip.
3 also unlocks. Further, in the half-open position, the lower handle 3 is locked so that it does not come out any further. It should be noted that the fully open hook 14 is attached with an outer pin and a stopper 20 for operating the transmitting circuit and disconnector 17 so as not to transmit while the fully open hook 14 is in operation. (8) Half-open coil 18 and half-open hook 13 The half-open coil 18 is an electromagnet used to half-open the lower handle 3. Like the fully open coil 16, it is indirectly controlled by the transmitted current. The half-open hook 13 is electrically unlocked by the half-open coil 18, and is also operated by the tip of the fully open hook 14 and the vertical pin 8. The half-open hook 13 not only locks the lower handle 3 in its normal position, but also locks it in the half-open and fully open positions so that it cannot be returned to its original position. (9) Release piece 19 and release piece 20 As shown in FIG. 5, the release piece 19 is half-screwed onto the fully open hook locking groove 15 and once attached to the lower handle 3. This has a very important meaning in preventing unauthorized unlocking of the full-opening hook 14 due to the mutual relationship with the release lock 20 of the full-opening hook 14, and preventing the lower handle 3 from being fully opened or both half-opened. is,
The restrainer 20 is provided with regulating means such as steps, protrusions, and inclined holes, resulting in a complicated shape. (10) Polar changer 21 The polarity changer 21 automatically reverses the direction of the current transmitted from the own station as the lower handle 3 moves. When the position is fixed, a current is sent to the relay 4 of the other station to create a half-open coil circuit, and when the lower puller 3 is half open or fully open, the relay 4 of the other station is sent.
Sends out a current that creates a fully open coil circuit. It is composed of a pole switching piece provided on the lower handle 3 and a contact that comes into contact with the pole switching piece and switches the current direction. (11) Transmission circuit disconnector 17 The transmitter circuit disconnector 17 is a contact that opens and closes the transmitter circuit by the operation of the full opening hook 14. The circuit is normally closed as part of the transmitting circuit, but even if the polarity changer 21 contacts the half-open position while pulling the lower puller 3 fully open due to the transmission from the other station, the transmitting circuit from the own station is closed. This prevents transmission from reaching the other station and prevents both stations from reaching full capacity. (12) Relay 4 and Bell 22, Relay 4 is a polarized relay that not only operates the bell 22 by the transmission current from the other station, but also operates the local part of the fully open coil 16 or half open coil 18 by the unlocking power _P2. It constitutes a circuit. The above is the general structure of the current pass blocker. This blocker was invented in 1878 by an Englishman, Mr. Edward Tyre, and since the structure of that time is almost the same, it has many mechanically moving parts and requires a great deal of effort to maintain and manage. In short,
In today's world where labor saving is sought after, there is still much room for improvement. Furthermore, since a mechanical operating mechanism is mainly used, there are various difficulties in obtaining the desired function.
The problems are listed below. Since the lower puller 3 is manually operated, more force than necessary may be applied to insert and remove it, and mechanisms related to the lower puller 3, such as the polarity reversible device 2
1. The transmitting circuit, the disconnector 17, the fully open hook 14, the half open hook 13, the release piece 19, etc. are parts that are easily worn out. Although the fully open hook 14 and the half open hook 13 are indispensable as far as mechanical locking is concerned, it is disadvantageous to have both hooks 14 and 13 interlocked, and their shape and the shape of the cut grooves 15a to 15f, etc. Needs improvement. In particular, the insufficiency of the shape of the release control piece 19 not only has a large influence on the cause of both half-opening and both fully-opening failures, but if emphasis is placed on preventing both half-opening, it will be a hindrance to preventing both fully opening. The fundamental problem is that it is difficult to predict. In addition, the vertical pin 8, the support hook 11, etc. are also subject to impact when the slip 7 falls, so they are likely to wear out and become a cause of malfunction. Malfunction of the slip blocker occurs not only due to mechanical problems but also due to unforeseen circumstances. For example, the letter 7 is added to the letter tongue.
If it seems to be stuck, the lower handle 3 should be opened halfway.
Any position at full throttle can be set to the fixed position without collaboration with the other station. This means that any number of vouchers can be taken out when receiving the voucher retrieval signal, which does not function as a voucher blocker and is extremely dangerous as it may cause a rear-end collision or a head-on collision. In order to make the ticket blocker maintenance-free, it is necessary to fundamentally reconsider its configuration, including the above points. The present invention replaces the mechanical operating mechanism used in current ticket blockers with an electric circuit using signal relays as much as possible without changing the system, thereby reducing the occurrence of failures and preventing component failures. The present invention provides a slip blocker that achieves fail-safe operation and has high reliability and security. Embodiments of the present invention will be described below with reference to the drawings.
Components that are the same as those of the current blocker will be described with the same numbers or symbols. 6 to 9, the present invention comprises an upper handle 2 for delivering the voucher 7 into the outer box 1, a lower handle 3 for taking out the voucher 7 from inside the outer box 1, and a voucher 7 delivered into the outer box 1. The bottom puller 3
In the ticket blocker, which has a ticket gutter 9 that guides the tickets onto the receiving tray 3a and accumulates a certain number of tickets therein, and makes it possible to take out tickets 7 under certain conditions through consultation and joint work with the partner station, The grooves 25a, 25 of the lower puller 3 operate independently of each other.
b, fall into 25c, position the handle 3, half open,
Half-open hook 23 and groove 25 that lock in the fully open position
d, a fully open hook 24 that falls during the normal position and a half-open position to restrict the movement range of the lower puller 3; a half-open solenoid SM and a fully open solenoid RM for driving each hook;
a constant reverse position holding relay NRSR that simultaneously drives both solenoids to unlock the half-open hook 23 and the fully open hook 24;
Selectively drive the half-open solenoid SM to open the half-open hook 2
3, and the receipt delivery memory relay TDSR, which detects the rotational displacement and restoring operation of the voucher tongue 10 provided on the voucher gutter 9, and
A delivery detection switch TD that operates the TDSR detects the normal position, fully open, half-open position, and movement direction of the lower puller 3, and causes the constant reverse position holding relay NRSR to self-hold, and while the lower puller 3 is moving, the half-open hook 23 and a drawer detection switch MS3, a push detection switch MS4, and a lock detection switch MS2 that keep the fully open hook 24 unlocked, and the orientation of the lower handle 3, half open,
A polarity reversal detection switch MS1 that detects the fully open position, a polarity reversal relay PCR that receives the output of the switch MS1 and switches the polarity of the transmission signal, and an unlocking electric key _P2
An unlocking relay P2PR that is lifted up by the operation of , and outputs an unlocking command according to the polarity of the transmission current of the other station and the state of the own station, and a receiving relay LNR and the other party that operate upon receiving the localization transmission from the other station. It is equipped with a receiving relay LRR that operates upon receiving a half-open or full-open transmission from the station, and a transmitting circuit and a disconnector TSC configured with an AND circuit of each relay output and the fall detection output of the half-open hook 23. FIG. 6 shows an embodiment of the blocker of the present invention. Also in the present invention, the outer box 1 includes a voltage detector G, an electric detector P ₁ ,
P ₂ , an upper puller 2, a lower puller 3, etc. are basically the same as the conventional one. However, the installation position of voltage detector G and electric switch PS are slightly different. The switch PS is installed on the side of the plunger P so that no load is applied to it.
Hereinafter, the same reference numerals will be given to the same components as in the prior art, and the explanation will be omitted, and the main differences will be explained in comparison with the conventional one. Figure 7 is a block diagram of the circuit.
FIG. 8 is a specific circuit diagram. (1) Voucher delivery detection mechanism Consists of a voucher tongue 10, a delivery detection switch TD, and a voucher delivery storage relay TDSR. That is, when the slip 7 is delivered through the upper handle 2 and placed on the slip tongue 10, the slip tongue 10 is rotated downward by its weight. This slip tongue 1
A delivery detection switch TD is disposed facing the cam surface of the rear edge of _NO.
The ticket delivery memory relay TDSR is lifted up through the contact point TDSR 2, and self-maintained through the contact point TDSR ₂ .
Next, the voucher slips down into the voucher gutter 9, the voucher tongue 10 returns to its normal position, and the delivery detection switch is activated.
Once the TD contact TD _NC is configured, the half-open solenoid SM is energized for the first time to operate, and the half-open hook 23 is pulled up to unlock the lower handle 3. The present invention does not use mechanical movement mechanisms such as vertical pins or support hooks. (2) Lower handle 3 It is basically the same as the current one, but has three grooves 25a, 25b, 25c into which the half-open hook 23 is inserted in the normal, half-open, and fully open positions, and straddles the half-open position from the normal position. One cut groove 25d into which the fully open hook 24 is inserted is provided, and the shape of the cut groove is simplified. (3) Polarity reversal device The polarity reversal device consists of a polarity reversal detection switch MS1 and a polarity reversal relay PCR. Polarity reversal detection switch
MS1 is controlled by a cam C1 provided on the lower puller 3, and the contact MS controls the positioning and half-open and fully open positions of the lower puller 3 when it is pulled out or pushed in.
1 _NO is detected and the polarity is reversed by the operation of the polarity reversal relay PCR. At this time, when the transmitter _P1 is pressed, the transmitter G is instructed to transmit the current value and its polarity. (4) Fully open hook 24, half open hook 23 and their control mechanism The fully open hook 24 is connected to the fully open solenoid RM, the half open hook 23 is connected to the half open solenoid SM, and the fully open solenoid RM is connected to the constant reverse position holding relay NRSR. Driven only by current from above. The half-open solenoid SM is driven not only by the ticket delivery relay TDSR but also by the constant reversal holding relay NRSR and the unlocking relay P2PR.
The operations 4 and 23 are independent and have no interlocking relationship. (5) Half-opening prevention mechanism This is an alternative to a mechanism using a release piece or a release element. It consists of a lock detection switch MS2, a pullout detection switch MS3, a push detection switch MS4, and a constant reversal holding relay NRSR excited by the outputs of these switches. The drawer detection switch MS3 detects the drawer operation of the lower puller 3.
Further, the push-in detection switch MS4 detects the pushing operation of the lower handle 3 and energizes the constant reverse holding relay NRSR, and the lock detection switch MS2 causes the constant reverse holding relay NRSR to self-hold during operation. All are controlled by the shape of cams C2 to C4 provided integrally with the lower handle 3.
In other words, a self-holding circuit for unlocking is formed separately for the pull-out operation and the push-in operation of the lower handle 3, and the constant reverse holding relay NRSR is activated in the half-open position.
It is made impossible to lock due to the control of This point will be specifically explained with reference to FIG. (a) Fully open (localization → fully open) When receiving a half-open transmission from the other station, the reception relay is activated.
LRR is abducted. At this time, the unlocking electric pen P ₂
When you press , the contacts of the drawer detection switch MS3
MS3 Constant reverse holding relay NRSR through _NC
lifts up, half open and fully open solenoid SM,
RM works. When you begin to pull out the lower handle 3, the contact point will close just before the fixed position lock is unlocked.
From localization to full opening through MS2 _NO ,
The constant reverse position holding relay NRSR is held and the contact is made just before the slip can be taken out.
MS2 _NO is opened and fully locked. (b) Invoice delivery (half open, fully open → fixed position) When the invoice is delivered through the upper puller 2, the contact TD _N of the delivery detection switch TD is activated as described above.
_O is configured, the document detection and holding relay TDSR is lifted up through the contact MS1 _NO , and the half-open solenoid SM is operated. When the lower handle 3 is pushed into the normal position, the contact _MS2NO opens just before the slip falls into the receiving tray 3a, and the self-holding of the slip detection and holding relay TDSR is released and the fixed position is locked. (c) Localization (full open → localization) When receiving localization transmission from the other station, the reception relay
LNR is lifted up. At this time, when the unlocking power switch _P2 is pressed, the constant reverse position holding relay NRSR is lifted up through the contact MS4 _NO , and the half-open and full-open solenoids SM and RM operate. When you start pushing in the lower handle 3, just before the fully open lock is unlocked, a constant reverse position holding relay is activated from fully open to normal position through contact MS2 _NO .
The NRSR is held by itself and the slip is at the bottom handle 3.
Contact _MS2NO is opened and the position is locked just before the object falls into the saucer 3a. (6) Transmission circuit disconnector The transmitter circuit disconnector is a receipt delivery memory relay.
It is constituted by an AND circuit of the contacts of the TDSR, the constant reverse position holding relay NRSR, the receiving relays LRR and LNR, the unlocking relay P2PR, and the contact of the drop detection switch SL that detects the fall of the half-open hook 23. FIG. 9 shows the relationship between the half-open hook 23 and the fall detection switch SL. That is, the rear edge of the half-open hook 23 is used as a cam surface, and the fall detection switch SL is disposed facing this cam surface. Therefore, if either the relay or fall detection switch SL is operating, transmission from the own station to the other station is immediately cut off, preventing both stations from being fully open. (7) Receiving relays Receiving relays include relay LNR, which operates by receiving localization transmissions from the destination station, and relay LRR, which operates by receiving half-open or full-open transmissions from the destination station.
It is made up of. When the electroscope G instructs half-open or full-open by transmitting localization or half-open or full-open from the other station, and the receiving relay LNR or LRR is lifted, the rotation is cut off, the signal oscillator 26 operates, and the speaker 27 emits a signal. Sound is emitted. (8) Unlocking operation mechanism When the unlocking power switch _P2 is pressed, the unlocking relay P2PR is lifted up, forming a control circuit that operates depending on the polarity of the transmitting current from the other station and the state of the own station. (9) Voucher adjustment A separate adjustment pushbutton _P3 is provided, and by pressing this, the constant reverse position holding relay NRSR is disconnected from the control circuit and is directly excited by the power supply. In the control circuit of FIG. 8, the contacts of each relay and switch are indicated by the same symbols as the relays and switches, and those having two or more contacts are numbered. The control circuit shown in FIG. 8 shows an example in which the circuit is configured so that when the contacts of switches and relays are welded, the circuit is locked and stops operating. Next, the handling procedure and operation of the ticket blocker of the present invention will be explained using the case where a train departs from station A to station B as an example. Its operating procedure is exactly the same as that of the current blocker. (1) Press _P1 on the transmitter at station A three times to signal station B to pick up the phone. When station B picks up the phone, we have a meeting about ``〇〇 train blockade.'' When station B approves, the telephone 28 is returned to its original position and a two-stroke signal sound is emitted to station B (indicating that the train can enter station B). Station B gives the same two-stroke signal when agreeing to the train's entry. Note that the lower handle 3 is initially in the normal position at both stations A and B. (2) After receiving the approval signal from station B, station A lowers the transmitting power _P1 and sends the transmitting current to station B.
The needle of voltage detector G at station A swings fully open, the needle at station B swings half open, and the receiving relay LNR at station B is lifted up. (3) When you press the unlocking switch _P2 at station B, the half-open solenoid SM operates, pulling up the half-opening hook 23 and unlocking the positional lock of the lower handle 3. (4) At B station, you can pull out the lower handle 3 to the half-open position while pressing the unlocking electric kettle P ₂ . When you release the unlocking electric key P ₂ , the cut groove 25 of the lower handle 3 will open.
The half-open hook 23 falls into b and locks the half-open lock. (5) The polarity reversal detection switch MS1 is activated by half-opening the lower handle 3 of station B, and the polarity of the transmitting circuit is reversed by the activation of the polarity reversal relay PCR. (6) If you open the bottom puller 3 at B Station half way, you can see half of the ticket, but you cannot take it out. This state means that the train coming from A station has been approved. (7) When station B is half-open, if you press transmitter _P1 , the needle of voltage detector G will swing half-open at station B and fully open at station A. As a result, the reception relay LRR of A station
is kidnapped. (8) When unlocking power switch _P2 is pressed at A station, the constant reverse position holding relay NRSR is lifted up, and the half-open solenoid SM is opened.
The full-open solenoid RM operates, pulling up the half-open hook 23 and the full-open hook 24 to unlock the lower handle 3. (9) When you pull out the lower puller 3 at Station A, you can only take out your ticket once it is fully open. Lock detection switch MS immediately before the position to take out the slip
The self-holding of the constant reverse holding relay NRSR by 2 is released, and the lower handle 3 of station A is fully opened and locked as both hooks 23 and 24 fall. (10) Trains departing from Station A arrive at Station B carrying a ticket as a driving permit for this section. B
When the ticket is received at the station and delivered through the upper handle 2, the half-open solenoid SM operates under the control of the delivery detection switch TD and the voucher delivery storage relay TDSR to pull up the half-open hook 23 and unlock the lower handle 3. As a result, the lower handle 3 of station B is pushed into the normal position, and the contact point of the lock detection switch is activated just before the ticket 7 falls into the tray 3a.
MS2 _NO : Invoice delivery memory relay TDSR
The self-retention is released, and the half-open hook 23 falls, and the lower handle 3 of station B is locked in position. In addition,
Since the fully open hook 24 has fallen, it cannot be fully opened. (11) When station B is in the fixed position, signal the arrival of the train and transmit it by operating transmitter _P1 . Voltage detector G at station A swings half-open, and receiving relay LNR is lifted up. At this time, when the unlocking power switch _P2 at station A is pressed, the unlocking relay P2PR is operated, and the half-opening hook 23 is pulled up by the half-opening solenoid SM.
When the lower handle 3 of station A is placed in the normal position, both stations return to their initial states and handling is completed. Figure 10 shows a chart of relays and switches. As described above, the present invention replaces the conventional mechanical operation mechanism with an electric circuit using a signal relay as much as possible, so there is no mechanical damage or wear, and there is no risk of malfunction due to malfunction, so it is reliable. The degree of safety and security can be dramatically improved compared to conventional methods. In particular, it consists of a combination of relays and switches,
A self-holding circuit for unlocking is provided separately for the pull-out operation and the push-in operation of the lower handle, so that it is possible to reliably prevent both half-opening without using an unreliable unlocking piece or the like. In addition, since the transmission circuit is configured with an AND circuit of relays and a fall detection switch for a half-open hook, it is possible to completely cut off transmission as long as one of the switches is in operation. performance can be further improved. Furthermore, when delivering a slip, the half-open hook is unlocked with a signal after the slip slips down into the slip and the tongue has returned to its normal position, so even if the slip is stuck to the slip, more than This has the effect of being able to prevent accidents that could occur if a ticket is taken out.

[Brief explanation of the drawing]

Figure 1 is a plan view of stations A and B where ticket blockers are installed, Figure 2 is a front view of the current ticket blocker, Figure 3 is a schematic cross-sectional diagram, Figure 4 is a configuration diagram, and Figure 5 6 is a partial cross-sectional perspective view of the ticket blocker of the present invention, FIG. 7 is a block diagram, FIG. 8 is a wiring diagram showing an example of an electric circuit, and FIG. 9 is a drop detection diagram. FIG. 10 is a chart showing the operating states of each relay and switch when a train is operated from station A to station B. 1... Outer box, 2... Upper handle, 3... Lower handle, 3a... Receiver, 7... Invoice, 9... Invoice gutter,
23...Half-open hook, 24...Full-open hook, 25a-25
d...kerf, G...potential detector, P ₁ ...transmission power, _P2 ...unlocking power, SM...half open solenoid, RM...fully open solenoid, NRSR...constant reverse position holding relay, TDSR……Ticket delivery memory relay,
TD...Delivery detection switch, MS1...Polarization reversal detection switch, MS2...Lock detection switch, MS3
...Drawer detection switch, MS4...Pushing detection switch, PCR...Polarization reversal relay, P2PR...Unlocking relay, LNR, LRR...Receiving relay, TSC...Transmission circuit disconnector.

Claims (1)

[Claims] 1. An upper handle that delivers the vouchers into the outer box, a lower handle that takes the vouchers out of the outer box, and a handle that guides the vouchers delivered into the outer box onto the tray of the lower handle and stores a certain number of them inside. In a ticket blocker that has a ticket gutter and allows ticket removal under certain conditions through consultation and joint operation with the other station,
a half-open hook that operates independently of each other and falls into the cut groove of the lower handle to lock the handle in the normal, half-open, and fully open positions; and a full-open hook that restricts the movement range of the lower handle between the normal and half-open positions; A drive means for each hook, a constant reversal holding relay that simultaneously drives both drive means to unlock both hooks, and electrically detects the normal position, fully open, and half open position of the lower handle, and electrically detects the fixed position while the lower handle is in operation. A self-holding circuit that self-holds the anti-position holding relay, a slip delivery memory relay that selectively drives and unlocks the drive means of the half-open hook, and rotational displacement and restoring operation of the slip tongue provided on the slip gutter. a means for electrically detecting the position of the lower puller to operate the slip delivery memory relay, a means for electrically detecting the normal position, half-open, and fully open position of the lower handle; A polarity reversing relay that performs
An unlocking relay that operates when the unlocking electric key is operated;
A ticket blocker characterized in that it is equipped with a reception relay that operates in response to a transmission signal from a partner station, and a transmission circuit and disconnection circuit that is composed of an AND circuit of the output of each relay and the output of detecting a fall of a half-open hook. .