JPS6328829B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Object of the Invention The object of the present invention is to realize a maintenance-free polarity reversing device provided in a slip blocker.

(2) Explanation of the prior art A ticket blocker is installed at each station at both ends of a block section, and through a meeting and joint work between both stations, one ticket for that section is taken out from the ticket blocker at either station and then It is issued to trains as proof of operating permission to ensure safe block operation.

The ticket blocker is equipped with an upper handle for delivering tickets received from the other station and a lower handle for taking out tickets to be delivered to the train.The lower handle can be pulled out fully to remove the tickets. Apart from taking it out, the normal position, half-open position, and full-open position each have a special meaning. That is,
"Location" is when there is no train in the block section, "half open"
is a state in which the station has approved accepting trains,
"Fully open" means a state in which a train can depart from its own station. Therefore, a situation should not arise where the lower pulls at both stations are either fully open or partially open. In particular, when the lower pulls at both stations are fully opened, trains can depart from each station to the other station, causing serious accidents such as head-on collisions. The lower handle at the host station cannot be pulled out without permission, and permission to pull out or push it in, and whether it is fully open or partially open, are now determined in principle by a signal transmitted from the other station. Each ticket blocker connected to each other by a transmitting circuit is equipped with a polarity switch that automatically reverses or disconnects the polarity of the transmitting current emitted from the station as the position of the lower handle changes, and an operation of the lower handle. Inside the station, a transmitter and disconnector are installed to cut off the transmitter circuit and stop transmission to the other station. Figure 1 shows the control circuit of a conventional slip blocker, Figure 2 shows a, b,
Figure C shows the structure of the polarity switch. That is, the polarity switch 1 includes an insulating seat 3 fixed to the lower handle 2, and polarity switching pieces provided on the insulating seat 3 (orientated positions a ₁ , a ₂ , half-open b ₁ , b ₂ , fully open)
c ₁ , c ₂ ) and a contact finger d installed in a fixed position. The contact finger d is the (+) of the transmitting power supply,
Two contact fingers d ₂ each connected to the (−) terminal,
d ₄ and 2 connected to the terminals of the transmitter, respectively.
Consisting of contact fingers d ₁ and d ₃ , each switching pole piece a ₁ , at the normal position, half-open, and fully open position as the lower handle 2 moves.
Contact a ₂ , b ₁ , b ₂ or c ₁ , c ₂ , and contact polarization pieces a ₁ , a ₂
The terminals are switched depending on the shape and arrangement of b ₁ , b ₂ , c ₁ , and c ₂ , and the direction of the transmission current sent to the other station is changed depending on the position of the lower handle of the own station. It controls the relay 4 provided in the ticket blocker at the station. By switching the contacts of the relay 4, the direction in which the lower handle of the other station should be moved is determined. As described above, the polarity reversing devices used in conventional ticket blockers used externally exposed contacts and reversed the polarity of the transmitted current by the relative displacement between the contact finger and the polarization piece. There are problems as listed below,
This has been a major hindrance to achieving maintenance-free technology. That is, (1) The contact finger contacts the pole switching piece with its spring pressure, but in order to make this contact even safer, a secondary spring is provided on the upper surface of the contact finger, although not shown in the figure. Adjustment of the contact pressure is delicate, and if the pressure of the secondary spring is too strong, a groove will be formed in the insulator, and dirt will accumulate in the groove, causing poor contact at the contact point.

(2) The ``caulking'' of the German silver contact point fixed at the tip of the contact finger may loosen and cause the wire to break.

(3) Because the distance between the four contact fingers is narrow, dirt accumulates on the mounting seat and it is easy to cause a semi-short circuit.

These are the disadvantages. Not limited to the above, when using the above structure, the impact caused by the operation of the lower handle,
Since vibrations are transmitted to the contact fingers, mechanical wear and tear cannot be avoided.

On the other hand, the transmitter and disconnector are always closed as part of the transmitter circuit, and when the lower puller of the own station is fully open based on the transmission from the other station, the polarity switch contacts the half-open position. It plays an important role in preventing transmission from being transmitted to the other station by cutting off the transmission circuit from the own station even when the station is in use, thereby preventing both stations from being fully opened.

By the way, the conventional transmitter and disconnector 5 is installed on the lower handle 2 as shown in FIG. The contact finger 9 was pushed up by the outer pin 8 attached to the holder, and the contacts forming the transmitting circuit 6 were opened. Therefore, while the fully open key 7 is in operation, transmission and disconnection are ensured when the lower handle 2 is in the half-open position, but unauthorized unlocking does not necessarily occur when the fully open key 7 is in operation.
There remained a problem that could not be solved only by detecting the motion of the robot. For example, in FIG. 1, if a situation occurs in which a voucher delivered through the upper handle 10 sticks to the voucher tab 11 and does not fall into the voucher gutter 12, according to the conventional mechanism, the half-open latch 13 is not pulled out. Even if the fully open key 7 is kept in the upper position and has fallen, the lower puller 2 is once pushed into the normal position and can be freely moved between the normal position and the half-open position without joint operation with the other party. In this state, even if you pull out the lower handle 2 to the half-open position while pressing the transmitter _P1 , the transmitter circuit ₆ will not be cut off, and the other station will receive the transmitted signal and unlock it by operating the unlocker P2. The lower handle 2 can be freely pulled out to its full extent, making it possible to take out any number of slips, which is extremely dangerous.

(3) Explanation of the principle and operation of the present invention The present invention includes a switch that operates by detecting the normal position, half open position, and fully open position of the lower handle, and a switch that switches the current direction of the transmitting circuit in response to the operation of the switch. A polarity reversal device is configured by using a combination with a relay equipped with a contact point, and the transmitting circuit is also disconnected using a signal that detects the fall of a half-open key, eliminating malfunctions of the polarity reversal device and preventing unauthorized unlocking. This is intended to prevent unauthorized removal of vouchers.

(4) Structure of this invention A polarity reversal detection switch which detects the fixed position of the lower pull provided in the slip blocker and opens the contact, detects the half-open and fully open positions and forms the contact, and the lifting contact and the falling contact. A reversing relay equipped with a contact, and a fall detection switch that forms a contact by detecting the fall of a half-open key that falls into the receiving groove of the lower handle and locks the lower handle in the normal, half-open, and fully open positions. A polarity reversing circuit for reversing the direction of the transmission current to the other station is configured in the transmitting circuit by switching the lifting contact and the falling contact of the polarity reversing relay, and the transmitting circuit includes the drop detection switch. The present invention is characterized in that the polarity reversal detection switch is connected to the power supply circuit of the polarity reversal relay.

(5) Description of embodiments of the present invention Examples of the present invention will be described below with reference to the drawings.
FIG. 4 shows a slip blocker to which the polarity changer of the present invention is applied. The box body 14 has a voltage detector G, a transmitting voltage detector P ₁ ,
An unlocking electric key P ₂ , an upper handle 10, and a lower handle 2 are provided, and a ticket M is delivered into the box body 14 through the top handle 10, and the ticket M is accumulated in the ticket gutter 12, and a meeting with the other station is carried out. The lower handle 2 is fully opened under certain conditions through joint work, and the slips M that have fallen onto the receiving tray 2a are taken out one by one from the slip gutter 12, which is exactly the same as the conventional method. FIG. 5 is an example of a control circuit. Lower handle 2
On the top is a half-open key locking groove S ₁ into which the half-open key 13 is dropped and locked in the normal, half-open, and fully open positions, respectively.
S ₂ , S ₃ and a full-open key engagement groove R that engages the full-open key 7 between normal position and half-open are formed. The half-open key 13 and the full-open key 7 are respectively pivotally supported at fixed positions on the lower pull handle 2 so as to be able to move up and down.The half-open key 13 is connected to a half-open solenoid SM for vertical driving thereof, and the full-open key 7 is connected to the half-open solenoid SM for vertically driving the half-open key 13. Fully open solenoid RM for vertical drive is connected.

MS ₁ is a polarity reversal detection switch, PCR is a polarity reversal relay,
SL is a fall detection switch for the half-open key 13.

The polarity reversing switch MS ₁ is controlled by the shape of the cam C ₁ mounted on the lower handle 2, and is a switch that detects the normal position, half open or fully open position of the lower handle 2, and operates the polarity reversing relay PCR. .

The polarity reversal relay PCR is excited by the operation of the polarity reversal detection switch _MS1 , and switches the polarity of the transmission signal. Figure 6 A to C show polarity reversal detection switch.
The operation of MS ₁ and the wiring diagram of the polarity reversing circuit including the above switch and relay are shown. When the polarity reversal detection switch MS ₁ is in the normal position of the lower handle 2, the contact MS _{1 NO} is opened,
It consists of half-open and full-open positions, and is a polarity reversing relay.
It is inserted into the PCR power supply circuit. polarity reversal relay
PCR has lifting contacts PCR ₂ , PCR ₃ , and falling contacts.
PCR ₁ and PCR ₄ constitute a polarity reversing circuit 15 which switches the direction of the transmission current by switching both contacts, and the fall detection switch SL is connected in series to the transmission circuit 6.

In the control circuit shown in FIG. 5, the fall detection switch SL is shown above the half-open key 13, but in reality, the cam 1 is attached to the rear edge of the half-open key 13 as shown in FIG.
3a, and a fall detection switch SL is installed facing this cam 13a, so that the impact caused by the operation of the lower handle 2 is not transmitted to the switch. In addition, the control circuit includes a reception relay LNR that operates upon receiving localization transmissions from the other station, a reception relay LRR that operates upon receiving half-open or full-open transmissions from the other station, and a reception relay LRR that operates upon receiving localization transmissions from the _other station. An unlocking relay P ₂ PR that issues an unlocking command according to the polarity of the transmitting current of the other station and the state of its own station, and the normal position of the lower handle 2 when pulling it out from the normal position to the fully open direction. The drawer detection switch MS ₃ operates by detecting when the lower puller 2 is pushed in from fully open to the normal position, and the push detection switch MS ₄ operates by detecting the fully open position of the lower puller 2, and the lower puller 2 moves from fully open to normal A lock detection switch MS ₂ that operates by detecting a change in movement between the cams C 2 and C 4 (all of these switches are controlled by the shapes of the cams C ₂ to _{C 4} ); A constant reverse holding relay NRSR is energized in response to the operation of switches MS ₂ to _{MS 4} and controls the operation of the half-open solenoid SM and the fully open solenoid RM, and a constant reverse holding relay NRSR is energized in response to the operation of switches MS 2 to MS 4 and controls the operation of the half-open solenoid SM and fully open solenoid RM. The ticket delivery memory relay TDSR that unlocks the key 13 and the ticket gutter 12
The slip delivery memory relay detects the rotational displacement and restoring operation of the slip tab 11 provided above.
The transmission circuit and circuit breaker TSC includes the delivery detection switch TD that operates the TDSR and the drop detection switch SL, and is composed of an AND circuit for each relay output.
In addition, it is equipped with a signal oscillator SOC, a telephone TEL, etc.

Regarding the transmitter circuit and disconnector TSC, when the contact of the drop detection switch SL is opened as shown in Fig. 6B, the transmitter circuit 6 is opened, but in the embodiment, the transmitter also transmits the drop contact of each relay. The transmitter circuit 6 is connected in series with the circuit 6, and the transmitter circuit 6 is cut off when any one of the relays is operating. In the above, conventional mechanical components are replaced with electric circuits as much as possible, but since the function is the same as that of conventional mechanical components,
Conventional ones may be used as they are, except for a part.

Next, the operation of the present invention will be explained. The operating instructions and procedures are exactly the same as the current pass blocker.

When the lower handle 2 of your own station is in the normal position, if there is no train in the block section, or if a train arrives at your station, or if a train arrives at the other station and is accepted at your station, it is still possible to work collaboratively. This is the state before entering. At this time, the lower handle 2 is locked in position due to the fall of the half-open key 13, and the contact point of the fall detection switch SL is configured and the polarity reversal detection switch is
Contact _NC of MS ₁ is open. Therefore, since the polarity reversing relay PCR has fallen, its falling contact
Through PCR ₁ and PCR ₄ , the polarity reversing circuit 15 is on standby in a state where it can transmit half-open or full-open transmission to the destination station. Now, when a train departs from station A to station B, if you press transmitter _P1 at station A, voltage detector G at station A will swing fully open, and voltage detector G at station B will swing half open. A signal sound will sound. At this time, the lower handle 2 of station A cannot be pulled out.

At B station, the electric detector was unlocked while the voltage detector G was shaking.
By pressing _P2 , the half-open key 13 can be lifted, and the lower handle 2 can be pulled out to the half-open position.

When the lower handle 2 is moving between the fixed position and the half-open position, the contact of the fall detection switch SL opens due to the half-open key 13 being lifted, and the transmitting circuit 6 is immediately disconnected, so that the transmitting power _P1 at station B is disconnected. Even if you press , you cannot send to station A.

After the lower handle 2 of Station B was locked in the half-open position due to the fall of the half-open key 13, the transmitting power switch P ₁ of Station B was locked.
When pressed, voltage detector G at station B swings half-open, voltage detector G at station A swings fully open, and a signal sounds.

At A station, the electric detector was unlocked while the voltage detector G was shaking.
When _P2 is pressed, the full opening key 7 and the half opening key 13 are lifted, and the slip M can be taken out by pulling out the lower handle 2 to the full opening.

When the lower puller 2 is moving between the fixed position and the fully open position, even if the transmitting power switch _P1 at station A is pressed, the contact cannot be transmitted to station B because the drop detection switch SL has opened the contact point.

The lower handle 2 is fully open at station A and half open at station B, and when the half-open key 13 falls, both are locked, and the contact configuration of the fall detection switch SL enables transmission at both stations. In addition, the lower handle 2 activates the polarity reversal detection switch when it is in its fully open position or half open position.
MS ₁ contact MS _{1 NO} consists of polarity reversing relay PCR
is lifted up, the lifting contacts PCR ₂ and PCR ₃ are configured, and the falling contacts PCR ₁ and PCR ₄ are opened, switching the polarity reversing circuit 15 and reversing the polarity of the transmission current. In other words, it becomes localization transmission.

Pass the ticket M carried from A station to the top handle 10 of B station.
When delivered into the box body 14 through the half-open key 13
is unlocked, and the lower handle 2 of station B can be pushed from half-open to the normal position. At this time, there is no need to transmit from station A or operate the unlocking electric key _P2 . The half-open key 13 at station B is automatically lifted, but the fully open key 7
cannot be fully opened because it is kept falling.

When transmitting power switch P ₁ at station B is pressed, the voltage detector G at station A swings half-open, and when unlocking power switch P ₂ is pressed, the half-open key 13 is lifted, and the lower handle 2 is moved from fully open to the normal position. Both stations return to their initial state.

In addition, the fully open key 7 for transmission from the other station,
The response operation of the half-open key 13 is the receiving relay LNR or
It is controlled by the operations of the LRR, each of the detection switches MS ₂ to MS ₄ , and the constant reverse position holding relay NRSR, but since it is functionally the same as the conventional one, the explanation thereof will be omitted. An example of specific wiring of the control circuit is shown in FIG. 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.

(6) Effects of the Invention As described above, the present invention includes a polarity reversal detection switch that operates by detecting the normal position, half-open, and fully open position of the lower handle, and a polarity reversal relay that switches contacts by the operation of the switch. Since a polarity reversing circuit is constructed by combining these, it is possible to reliably change the polarity by turning on and off the switch by controlling a cam fixed to the bottom handle, and it is possible to switch the polarity reliably by turning the switch on and off. Does not require delicate pressure adjustment. In addition, since sealed relays and switches can be used, there are no accidents such as poor contact due to adhesion of dust or malfunction due to half-short circuits, unlike conventional methods, and the impact of the lower handle is not transmitted to the relay. Therefore, mechanical wear and tear can be prevented.

Furthermore, in the present invention, the fall detection switch detects the lifting of the half-open key and cuts off the transmission, so that transmission is possible only when the lower handle is completely locked due to the fall of the half-open key. This makes it possible to completely prevent unauthorized unlocking due to malfunction or failure of half-open or full-open keys.

Therefore, according to the present invention, conventional maintenance,
This has the effect of improving reliability and safety by making maintenance-free the main inspection items for polarity reversals, transmitters, and disconnectors, which previously required very troublesome inspection work.

[Brief explanation of drawings]

Figure 1 is a control circuit diagram of a conventional pass blocker, Figure 2 A is a side view showing the structure of a conventional pole reversal device, B is a plan view of the same, C is an explanatory diagram of the pole reversal switching procedure, and Figure 3 is FIG. 4 is a side view showing the structure of a conventional transmitter and disconnector, FIG. 4 is a partial cross-sectional perspective view of a slip blocker to which the device of the present invention is applied, FIG. 5 is a block diagram of the control circuit, and FIG. An explanatory diagram of the operation of the pole detection switch, B is a wiring diagram between the pole reversal relay and the pole reversal detection switch, C is a wiring diagram of the pole reversal circuit, Figure 7 is an installation diagram of the drop detection switch, and Figure 8 is the control circuit. FIG. 2 is a wiring diagram showing one embodiment of the present invention. 2...Lower handle, 6...Transmission circuit, 15...Polarity reversal circuit, 2a...Lower handle receiving groove, MS ₁ ...Polarity reversal detection switch, MS _{1 NO} ...Polarity reversal switch contact, PCR... ...Polarization relay, PCR ₁ to PCR ₄ ...Polarization relay contact, SL...Fall detection switch,
... Contact point of fall detection switch.

Claims (1)

[Claims] 1. A polarity reversal detection switch that detects the fixed position of the lower pull on the slip blocker and opens the contact, detects the half-open and fully open positions, and configures the contact, and a polarity reversal switch that is equipped with a lifting contact and a falling contact. comprising a relay, and a drop detection switch that forms a contact point by detecting the fall of a half-open key that falls into a receiving groove of a lower handle and locks the lower handle in the normal, half-open, and fully open positions, respectively;
A polarity reversing circuit for reversing the direction of the transmission current to the destination station is configured in the transmitting circuit by switching the lifting contact or the falling contact of the polarity reversing relay, and the drop detection switch is interposed in the transmitting circuit. . A polarity reversal device in a pass block, characterized in that the polarity reversal detection switch is connected to a power supply circuit of a polarity reversal relay.