Double-line electric hand control system based on ZD6 switch machine

Abstract

This invention relates to the field of railway dedicated line signal control technology, and discloses a double-track manual-operated electric interlocking control system based on ZD6 switch machines. The system includes two sets of ZD6 electric switch machines, a turnout status monitoring circuit, a centralized control host, a safety interlocking unit, and an indoor operation console. The ZD6 electric switch machines are installed on two existing sets of manual turnouts on the dedicated line, connected to the turnout switch point rail connecting rod, retaining the original emergency manual switching function, and equipped with a manual / electric clutch mechanism to achieve mode interlocking: normal operation is electric, fault operation is manual. The turnout status monitoring circuit uses a double-break indicator circuit to independently collect the positioning, reverse, tight, and locking status information of the two sets of turnouts and transmit it to the centralized control host. The centralized control host, through the safety interlocking unit, realizes safe interlocking control between the two sets of turnouts, routes, track circuits, and signals.

Description

Technical Field

[0001] This invention relates to the field of railway dedicated line signal control technology, and in particular to a double-track manual-operated electric interlocking control system based on the ZD6 switch machine. Background Technology

[0002] A double-track manual turnout is a type of turnout device used in double-track railway sections, where trains switch tracks manually. It is primarily used in areas with low automation, such as branch lines, dedicated lines, or shunting yards. Its working principle involves the operator manually manipulating the switch handle to change the position of the switch rail, allowing the train to switch from one track to the other. In double-track operation, manual turnouts must ensure safe isolation and accurate guidance between the up and down tracks, preventing trains from entering the wrong track.

[0003] Currently, manual turnouts are widely used in railway sidings, industrial and mining enterprise freight yards, port pipelines, and other scenarios. Traditional manual turnouts rely entirely on manual on-site operation, which has problems such as dispersed operation, high labor intensity, lack of safety interlocking, lack of real-time feedback on turnout status, and lack of route protection. It is also prone to safety accidents such as incorrect turnout, missed turnout, turnout derailment, and route conflict. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an electric centralized interlocking control system for manual turnouts on dedicated lines based on the ZD6 switch machine and applicable to two sets of turnouts. This system enables remote centralized operation, safety interlocking protection, real-time status monitoring, and retains emergency manual functions, thereby significantly improving the safety and efficiency of train operation on dedicated lines.

[0005] The technical solution adopted in this invention is: a double-track manual-operated electric interlocking control system based on ZD6 switch machines, including two sets of ZD6 electric switch machines, a turnout status monitoring circuit, a centralized control host, a safety interlocking unit, and an indoor operation control console; the ZD6 electric switch machines are respectively installed on two sets of existing manual-operated turnouts on the dedicated double track, connected to the turnout switch point rail connecting rod, and retaining the original emergency manual switching function, and adding a manual / electric clutch mechanism to realize mode interlocking, normal electric, fault manual; the turnout status monitoring circuit adopts a double-break indication circuit, independently collecting the positioning, reverse, close, and locking status information of the two sets of turnouts and transmitting it to the centralized control host; the centralized control host realizes the safety interlocking control between the two sets of turnouts, routes, track circuits, and signals through the safety interlocking unit; the indoor operation control console is connected to the centralized control host to complete the centralized operation of the two sets of turnouts, real-time status display, and fault audible and visual alarms.

[0006] The manual / electric clutch mechanism enables interlocking switching between the electric mode control of the ZD6 electric switch machine and the manual mode emergency manual switch control, and safely switches to manual mode in case of power failure or system failure.

[0007] The turnout status monitoring circuit uses a double-break indication circuit to independently detect the tightness and locking status of the two sets of turnouts, eliminating false indication faults.

[0008] The safety interlocking unit has built-in safety interlocking logic to realize the functions of independent control and interlocking of two sets of turnouts, locking the turnouts after the route is established, prohibiting the operation of turnouts when the track is occupied, and locking the route after the signal is released.

[0009] The safety interlocking unit has built-in safety interlocking logic to realize the functions of independent control and interlocking of two sets of turnouts, locking the turnout after the route is established, prohibiting the operation of the turnout when the track is occupied, and locking the route after the signal is released.

[0010] The indoor control console is equipped with two sets of independent turnout operation buttons, position indicator lights, and fault alarm lights. Each set of turnouts can be controlled independently, and the turnout position, locking status, and fault status can be displayed simultaneously.

[0011] The centralized control host adopts a dedicated line micro interlocking machine or PLC controller, with a built-in dual turnout interlocking program, supporting turnout action driving, status acquisition, interlocking calculation, fault locking and operation recording functions.

[0012] The beneficial effects of this invention are as follows: This invention is precisely adapted to the scenario of retrofitting two sets of turnouts on a dedicated line with a ZD6 switch machine, demonstrating strong versatility. It achieves electrification, centralization, and interlocking of the double turnouts, eliminating manual switching on-site and reducing labor intensity. This invention employs dual-mode redundancy (manual / electric), ensuring safety and reliability, and fully complying with dedicated line operation safety regulations. The interlocking logic of this invention is comprehensive, preventing accidents such as incorrect switching, turnout derailment, and route conflicts from the root cause. This invention requires minimal construction work, has low retrofit costs, and yields quick results, making it suitable for large-scale application on existing dedicated lines. This invention features real-time status monitoring, fault alarms, and operation recording functions, facilitating operation and maintenance management. Attached Figure Description

[0013] Figure 1 This is a block diagram of the overall structure of the system of the present invention; Figure 2 This is a block diagram of the ZD6 switch machine drive and status acquisition circuit of the present invention; Figure 3 This is a logic block diagram of the safety interlock and fault alarm of the present invention. Detailed Implementation

[0014] like Figure 1-3 As shown, a double-track manual-operated electric interlocking control system based on ZD6 switch machines includes two sets of ZD6 electric switch machines, a turnout status monitoring circuit, a centralized control host, a safety interlocking unit, and an indoor operation control console.

[0015] The ZD6 type electric switch machine is installed on two existing manual turnouts on the dedicated double-track line, connected to the turnout switch rail connecting rod. It retains the original emergency manual switching function and is equipped with a manual / electric clutch mechanism to achieve mode interlocking: normal operation is electric, and manual operation is used in case of failure. The ZD6 type electric switch machine is installed at the traction point of each of the two existing manual turnouts on the dedicated double-track line, and is reliably connected to the turnout switch rail connecting rod. The original manual switch is retained, and a manual / electric clutch interlocking mechanism is added to ensure interlocking between electric and manual modes and prevent operational conflicts. The manual / electric clutch mechanism enables interlocked switching between electric mode control by the ZD6 type electric switch machine and manual mode emergency manual switching control, safely switching to manual mode in case of power failure or system failure.

[0016] The turnout status monitoring circuit adopts a double-break indication circuit to independently collect the positioning, reverse, contact, and locking status information of two sets of turnouts and transmit it to the centralized control host. Positioning, reverse, and contact detection double-break circuits are installed for each set of turnouts, control cables are laid, and the status signals (locking status information) are connected to the centralized control host to achieve independent acquisition and uploading of the status of the two sets of turnouts.

[0017] The turnout status monitoring circuit uses a double-break indication circuit to independently detect the tightness and locking status of the two sets of turnouts, eliminating false indication faults.

[0018] The centralized control host realizes safety interlocking control between two sets of turnouts, routes, track circuits, and signals through the safety interlocking unit.

[0019] The centralized control host adopts a dedicated line micro interlocking machine or PLC controller, with a built-in dual turnout interlocking program. It supports turnout action driving, status acquisition, interlocking calculation, fault locking and operation recording functions, and realizes: two sets of turnouts can be operated independently; turnouts are automatically locked after the route is established; turnout operation is prohibited when the track is occupied; manual / electric mode electrical interlock; automatic fault locking and alarm.

[0020] The indoor control console is connected to the centralized control host to complete the centralized control of the two sets of switches, real-time status display, and audible and visual alarms for faults.

[0021] The indoor control console is equipped with two sets of independent turnout operation buttons, position indicator lights, and fault alarm lights. Each set of turnouts (turnout #1 or #2) can be controlled independently, and the turnout position, locking status, and fault status can be displayed simultaneously to achieve centralized control and safety monitoring.

[0022] Figure 1In this invention, the system consists of an indoor operation control console, a centralized control host and a safety interlocking unit, two sets of ZD6 electric switch machines, a turnout status monitoring circuit, a track circuit and a signal. The centralized control host is connected to the control console, the two sets of ZD6 switch machines, the turnout status monitoring circuit, the track circuit and the signal, respectively, to realize electric drive, status acquisition, centralized control, safety interlocking, status display and fault alarm of double-track turnout.

[0023] Figure 2 In the process, the central control host outputs action drive signals to the ZD6 electric switch machine, and at the same time collects the switch machine's fixed and reverse position status through the position acquisition loop. The switch machine synchronously feeds back the mechanical indication status of the turnout to the host, realizing closed-loop control of the turnout's action and status.

[0024] Figure 3 In the process, the track circuit and signal transmit status information to the safety interlocking logic unit. The logic unit calculates the interlocking conditions and sends them to the centralized control host. The host displays the status and triggers the fault alarm unit to provide audible and visual prompts.

[0025] This invention provides a customized electrification upgrade for two sets of manually operated turnouts on a dedicated railway line, compatible with the ZD6 switch machine standard interface. It achieves centralized control, independent operation, and interlocking of the two turnouts, avoiding operational conflicts. The emergency manual switching function is retained, allowing for safe switching in case of power failure or malfunction. It features complete interlocking logic for turnouts, routes, tracks, and signals, ensuring high safety for the dedicated line. Construction is simple, cost-effective, and highly reliable, fully adaptable to the upgrading of existing dedicated lines.

[0026] The following implementation was carried out on-site, combining two sets of turnouts and a ZD6 switch machine on the dedicated line: 1. Mechanical modification ZD6 electric switch machines were installed at the traction points of the two existing manual turnouts and connected to the turnout switch rail connecting rods; the original manual switchers were retained and a manual / electric clutch mechanism was added to achieve mode interlocking, with electric operation during normal operation and manual operation during faults.

[0027] 2. Circuit layout Each set of turnouts is equipped with a positioning mark, a reverse positioning mark, and a double-break circuit for close contact detection. The signals are connected to the centralized control host to realize independent acquisition of the status of the two sets of turnouts.

[0028] 3. Centralized control host It adopts a dedicated line micro interlocking machine or PLC controller with a built-in double turnout interlocking program to achieve: two sets of turnouts can be operated independently, the turnouts are automatically locked after the route is established, the turnouts are prohibited from being operated when the track is occupied, and manual / electric mode electrical interlocking.

[0029] 4. Console Operations The indoor control console is equipped with two sets of individual turnout operation buttons, position indicator lights, and fault alarm lights. It can monitor the real-time positioning, contact, and locking status of turnouts #1 and #2, enabling centralized control.

[0030] 5. Security Guarantee The system has functions such as turnout contact detection, turnout derailment alarm, power failure protection, operation recording, and fault locking, and meets the safety specifications of railway sidings.

Claims

1. A double-line manual lever electric interlocking control system based on the ZD6 switch machine, characterized in that: The system includes two sets of ZD6 electric switch machines, a turnout status monitoring circuit, a centralized control host, a safety interlocking unit, and an indoor operation control console. The ZD6 electric switch machines are installed on two existing manual turnouts on the dedicated double-track line, connected to the turnout switch point rail connecting rod, retaining the original emergency manual switching function, and equipped with a manual / electric clutch mechanism to achieve mode interlocking: normal operation is electric, fault operation is manual. The turnout status monitoring circuit uses a double-break indicator circuit to independently collect the positioning, reverse, tight, and locking status information of the two sets of turnouts and transmit it to the centralized control host. The centralized control host, through the safety interlocking unit, achieves safety interlocking control between the two sets of turnouts, routes, track circuits, and signals. The indoor operation control console is connected to the centralized control host to complete centralized control of the two sets of turnouts, real-time status display, and fault audible and visual alarms.

2. The double-line manual lever electric interlocking control system based on the ZD6 switch machine according to claim 1, characterized in that: The manual / electric clutch mechanism enables interlocking switching between the electric mode control of the ZD6 electric switch machine and the manual mode emergency manual switch control, and safely switches to manual mode in case of power failure or system failure.

3. The double-line manual lever electric interlocking control system based on the ZD6 switch machine according to claim 1, characterized in that: The turnout status monitoring circuit uses a double-break indication circuit to independently detect the tightness and locking status of the two sets of turnouts, eliminating false indication faults.

4. The double-line manual lever electric interlocking control system based on the ZD6 switch machine according to claim 1, characterized in that: The safety interlocking unit has built-in safety interlocking logic to realize the functions of independent control and interlocking of two sets of turnouts, locking the turnouts after the route is established, prohibiting the operation of turnouts when the track is occupied, and locking the route after the signal is released.

5. A double-line manual lever electric interlocking control system based on a ZD6 switch machine according to claim 1, characterized in that: The indoor control console is equipped with two sets of independent turnout operation buttons, position indicator lights, and fault alarm lights. Each set of turnouts can be controlled independently, and the turnout position, locking status, and fault status can be displayed simultaneously.

6. A double-line manual lever electric interlocking control system based on a ZD6 switch machine according to claim 1, characterized in that: The centralized control host adopts a dedicated line micro interlocking machine or PLC controller, with a built-in dual turnout interlocking program, supporting turnout action driving, status acquisition, interlocking calculation, fault locking and operation recording functions.

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