Railway portal crane car taking and delivering safe operation device and control system thereof

Abstract

The invention relates to the field of engineering protection, and particularly discloses a safe operation device for taking and delivering a vehicle of a railway portal crane and a control system of the safe operation device. The PLC interlocking controller is arranged on the portal crane, the limiting switch, the warning lamp, the voice broadcaster, the start-stop change-over switch and the remote controller are connected with a control system of the portal crane, in the operation process of a trolley of the portal crane, the warning lamp and the voice broadcaster can broadcast the running state of the trolley, and the safety of the trolley is improved. According to the operation trolley, avoiding warning information is sent to a driver and surrounding workers, the situation that the operation trolley hurts the surrounding workers is effectively avoided, the first limiting switch can decelerate the operation trolley, the second limiting switch can stop the trolley, and by limiting the operation speed and the operation range of the trolley, the safety of the operation trolley is improved. The operation safety of the trolley is further improved, the trolley of the portal crane can normally carry out loading and unloading work within the safe operation range, frequent shutdown is avoided, and then the loading and unloading work efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering protection, and in particular relates to a railway gantry crane vehicle pick-up and delivery safety operation device and a control system thereof. Background Art

[0002] In current railway freight yard loading and unloading operations, a key operational requirement exists to ensure absolute safety at the work site: when a shunting locomotive is performing a car pickup or delivery operation, the gantry crane must immediately stop operating. This is primarily to prevent collisions between the crane's boom rotation, trolley movement, or lifting movements and moving train cars, thereby protecting on-site workers and preventing accidental damage to the valuable lifting equipment and train cars. However, due to the relatively frequent car pickup and delivery operations, each operation means that the gantry crane is forced to interrupt its loading and unloading tasks. This downtime accumulates to a considerable amount, directly leading to low overall loading and unloading efficiency. As the core loading and unloading equipment, the crane's effective operating time is significantly compressed, which not only prolongs the cargo's dwell time at the yard and reduces cargo turnover, but also potentially affects the punctuality of subsequent trains and increases operating costs.

[0003] In order to optimize operating efficiency and ensure the safety of crane loading and unloading operations, a vehicle pickup and delivery operation safety device can be installed on the gantry crane to ensure the safety of the crane operation when picking up and delivering vehicles. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a railway gantry crane car pick-up and delivery safety operation device and its control system to solve the problem of frequent stops of the gantry crane during the car pick-up and delivery operation, resulting in low loading and unloading efficiency of the gantry crane.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A railway gantry crane pick-up and delivery vehicle safety operation device, applied to the railway gantry crane safe operation protection, comprising:

[0007] A PLC interlocking controller is connected to the gantry crane and is connected to a control console of the gantry crane;

[0008] A limit switch, comprising a first limit switch and a second limit switch connected to the gantry crane, for limiting the movement of the gantry crane;

[0009] a warning light connected to the gantry crane to remind operators of the working status of the device;

[0010] A voice announcer, connected to the gantry crane, for announcing the working status of the device by voice;

[0011] A start-stop switch is provided inside the driver's cab of the gantry crane and is used to control the start and stop of the device;

[0012] A remote controller, wirelessly connected to the gantry crane, for controlling the start and stop of the device;

[0013] The limit switch, warning light, voice announcer, start-stop switch and controller are all connected to the PLC interlocking controller.

[0014] Preferably, the first limit switch is configured for the trolley deceleration limit of the gantry crane, and the second limit switch is configured for the safety limit stop of the gantry crane.

[0015] Preferably, the control priority of the remote controller is higher than the control priority of the start-stop switch.

[0016] Preferably, the gantry crane is provided with a preset deceleration point corresponding to the first limit switch. When the trolley of the gantry crane runs toward the train area via the preset deceleration point, the trolley automatically decelerates. The gantry crane is provided with a preset stop point corresponding to the second limit switch. When the trolley of the gantry crane runs toward the train area via the preset stop point, the trolley automatically stops.

[0017] Preferably, the warning light is started and stopped synchronously with the safe operation device.

[0018] A railway gantry crane pick-up and delivery vehicle safety operation control system, applied to a railway gantry crane pick-up and delivery vehicle safety operation device, comprising:

[0019] Start and stop control unit, used to control the start and stop of the safety operation device;

[0020] A visual warning unit, used to control the flashing of the warning light to provide a visual warning;

[0021] Voice announcement unit, used to control the voice announcer to play the prompt voice;

[0022] Mechanical limit unit, used to limit the trolley operating position of the gantry crane;

[0023] An interlocking control unit is used to associate the safety operation device with the control system of the gantry crane.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a PLC interlocking controller on the gantry crane to connect the limit switch, warning light, voice announcer, start-stop switch and remote control with the control system of the gantry crane. During the operation of the gantry crane trolley, the warning light and voice announcer can broadcast the operating status of the trolley and send avoidance warning messages to the driver and surrounding staff, effectively preventing the operating trolley from causing harm to surrounding personnel. In addition, the first limit switch can slow down the operating trolley, and the second limit switch can stop the trolley. By limiting the operating speed and operating range of the trolley, the operating safety of the trolley is further improved, and the gantry crane trolley can perform normal loading and unloading operations within the safe operating range, avoiding frequent shutdowns, and thereby improving the loading and unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the device connection of the present invention;

[0027] Figure 2 is a system block diagram of the present invention;

[0028] In the figure: 1. Gantry crane; 2. PLC interlocking controller; 3. First limit switch; 4. Second limit switch; 5. Warning light; 6. Voice announcer; 7. Start-stop switch; 8. Remote control. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example:

[0031] See also Figure 1-Figure 2 As shown, a railway gantry crane pick-up and delivery vehicle safety operation device is applied to the safe operation protection of the railway gantry crane 1, comprising:

[0032] A PLC interlocking controller 2 is connected to the gantry crane 1 and is connected to a control console of the gantry crane 1;

[0033] A limit switch, comprising a first limit switch 3 and a second limit switch 4 connected to the gantry crane 1, for limiting the movement of the gantry crane 1;

[0034] A warning light 5, connected to the gantry crane 1, is used to remind the operator of the working status of the device;

[0035] A voice announcer 6, connected to the gantry crane 1, for announcing the working status of the device by voice;

[0036] A start-stop switch 7 is provided inside the driver's cab of the gantry crane 1 and is used to control the start and stop of the device;

[0037] A remote controller 8, wirelessly connected to the gantry crane 1, for controlling the start and stop of the device;

[0038] The limit switch, warning light 5 , voice announcer 6 , start / stop switch 7 and controller 8 are all connected to the PLC interlocking controller 2 .

[0039] As can be seen from the above, by setting a PLC interlocking controller 2 on the gantry crane 1, the limit switch, warning light 5, voice announcer 6, start-stop switch 7 and remote control 8 are connected to the control system of the gantry crane 1. During the operation of the trolley of the gantry crane 1, the warning light 5 and the voice announcer 6 can broadcast the operating status of the trolley, and send avoidance warning messages to the driver and surrounding staff, effectively preventing the operating trolley from causing harm to surrounding personnel. In addition, the first limit switch 3 can slow down the operating trolley, and the second limit switch 4 can stop the trolley. By limiting the operating speed and operating range of the trolley, the operating safety of the trolley is further improved, and the trolley of the gantry crane 1 can perform normal loading and unloading work within the safe operating range, avoiding frequent shutdowns, and thereby improving the efficiency of loading and unloading operations.

[0040] The first limit switch 3 is configured as a deceleration limit for the trolley of the gantry crane 1, and the second limit switch 4 is configured as a safety limit stop for the gantry crane 1. A preset deceleration point corresponding to the first limit switch 3 is provided on the gantry crane 1. When the trolley of the gantry crane 1 runs toward the train area via the preset deceleration point, the trolley automatically decelerates. A preset stop point corresponding to the second limit switch 4 is provided on the gantry crane 1. When the trolley of the gantry crane 1 runs toward the train area via the preset stop point, the trolley automatically stops.

[0041] The control priority of the remote controller 8 is higher than the control priority of the start-stop switch 7 , and the warning light 5 is started and stopped synchronously with the safety operation device.

[0042] When in use, the "pick-up and delivery vehicle operation safety device" function can be turned on through the start-stop conversion switch 7 on the linkage table in the driver's cab or the ground handheld remote control 8. After turning on, the voice announcer 6 on the gantry crane 1 broadcasts "the pick-up and delivery vehicle safety operation device is turned on" twice, and the warning light 5 keeps flashing to remind the operator that the device is on; when the device function is turned on through the ground handheld remote control 8, the device start operation can be performed on multiple gantry cranes 1 at the same time through one remote control 8. At this time, the voice announcer 6 at the railway line ramp will continuously broadcast "the pick-up and delivery vehicle safety operation is turned on, please pay attention to safety", and the warning light 5 keeps flashing to remind the operator that the device is on. When the device is turned on using the remote control 8, the device function will be forced to start regardless of whether the start-stop conversion switch 7 on the linkage table of the gantry crane 1 is turned on or not.

[0043] When the device is in the on state, when the driver operates the gantry crane 1, it does not affect the trolley, lifting, rotation and lifting equipment operations of the gantry crane 1. It only limits the trolley from running towards the train. When the driver operates the trolley to run towards the train area, it reaches the preset deceleration point and the trolley automatically slows down. At the same time, the voice announcer 6 broadcasts "trolley deceleration" to remind the driver. When it runs to the preset stop point, the crane trolley automatically stops and the trolley cannot continue to run towards the train. At the same time, the voice announcer 6 broadcasts "trolley limit stop". At this time, the driver can only operate the trolley in the opposite direction. The gear speed of the trolley is not affected during the reverse movement away from the train and can run at high speed. After the device function is turned on, except for the inability to operate in the train area, the other functions of the gantry crane 1 can be used normally. The gantry crane 1 can carry out normal loading and unloading operations within the safe limit area, improving work efficiency.

[0044] When the vehicle pickup and delivery operation is complete, the driver can disable the device using the start / stop switch 7 on the linkage panel. To ensure safety, the device grants the highest control authority to the remote controller 8. If the operation manager turns the device on using the handheld remote controller 8, it must be turned off using the remote controller 8. Turning off the start / stop switch 7 on the linkage panel in the driver's cab will have no effect. When the device function is disabled, the voice announcer 6 announces "Safety Operation Device for Pickup and Delivery Vehicles Disabled" twice in succession. The train line ramp voice announcer 6 automatically shuts off. The device operating warning light 5 outside the driver's cab automatically stops flashing, the two-stage travel limiter of the trolley automatically closes, and the gantry crane 1 returns to normal operation.

[0045] A railway gantry crane pick-up and delivery vehicle safety operation control system, applied to a railway gantry crane pick-up and delivery vehicle safety operation device, comprising:

[0046] Start and stop control unit, used to control the start and stop of the safety operation device;

[0047] A visual warning unit, used to control the warning light 5 to flash for visual warning;

[0048] The voice broadcast unit is used to control the voice broadcast device 6 to play the prompt voice;

[0049] A mechanical limit unit, used for limiting the trolley operating position of the gantry crane 1;

[0050] An interlocking control unit is used to associate the safety operation device with the control system of the gantry crane 1.

[0051] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0052] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0054] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A railway gantry crane pick-up and delivery vehicle safety operation device, applied to the railway gantry crane (1) for safe operation protection, characterized in that: include: A PLC interlocking controller (2) is connected to the gantry crane (1) and is connected to a control console of the gantry crane (1); A limit switch, comprising a first limit switch (3) and a second limit switch (4) connected to the gantry crane (1), for limiting the movement of the gantry crane (1); a warning light (5), connected to the gantry crane (1), for reminding operators of the working status of the device; A voice announcer (6) is connected to the gantry crane (1) and is used to announce the working status information of the device by voice; A start-stop switch (7) is provided inside the driver's cab of the gantry crane (1) and is used to control the start and stop of the device; A remote controller (8) is wirelessly connected to the gantry crane (1) and is used to control the start and stop of the device; The limit switch, warning light (5), voice announcer (6), start / stop switch (7) and controller (8) are all connected to the PLC interlocking controller (2).

2. A railway gantry crane pick-up and delivery vehicle safety operation device according to claim 1, characterized in that: The first limit switch (3) is configured to be used for the trolley deceleration limit of the gantry crane (1), and the second limit switch (4) is configured to be used for the safety limit stop of the gantry crane (1).

3. A railway gantry crane pick-up and delivery vehicle safety operation device according to claim 1, characterized in that: The control priority of the remote controller (8) is higher than the control priority of the start-stop switch (7).

4. A railway gantry crane pick-up and delivery vehicle safety operation device according to claim 2, characterized in that: The gantry crane (1) is provided with a preset deceleration point corresponding to the first limit switch (3). When the trolley of the gantry crane (1) runs toward the train area via the preset deceleration point, the trolley automatically decelerates. The gantry crane (1) is provided with a preset stop point corresponding to the second limit switch (4). When the trolley of the gantry crane (1) runs toward the train area via the preset stop point, the trolley automatically stops.

5. A railway gantry crane pick-up and delivery vehicle safety operation device according to claim 4, characterized in that: The warning light (5) is started and stopped synchronously with the safety operation device.

6. A railway gantry crane pick-up and delivery vehicle safe operation control system, applied to a railway gantry crane pick-up and delivery vehicle safe operation device according to any one of claims 1 to 5, characterized in that: include: Start and stop control unit, used to control the start and stop of the safety operation device; A visual warning unit, used for controlling the warning light (5) to flash to provide a visual warning; A voice announcement unit, used for controlling the voice announcer (6) to play the prompt voice; A mechanical limit unit for limiting the operating position of the trolley of the gantry crane (1); An interlocking control unit is used to associate the safety operation device with the control system of the gantry crane (1).

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