Safety device used between crane girder walkway and trolley frame and its judgment method

Abstract

The present invention discloses a safety device for crane beam walkway and trolley frame and a judgment method thereof, comprising a safety door, an electronic door lock, a button with a status indicator light and a PLC controller; the safety door is arranged on the beam walkway, and the electronic door lock is arranged on the safety door; buttons with status indicator lights are installed on one side of the safety door and the trolley frame; the button is connected to the input point signal of the PLC controller, and the status indicator light on the button is connected to the output point signal of the PLC controller; the electronic door lock comprises a lock head module and an unlocking solenoid valve connected thereto; the lock head module is used to realize the opening and closing of the safety door; the unlocking solenoid valve is connected to the output point signal of the PLC controller, and the locking switch quantity in the electronic door lock is connected to the input point signal of the PLC controller. The present invention proposes a safety solution for personnel to pass between the crane beam and the trolley frame, which effectively improves the safety protection of personnel and equipment.

Description

Technical Field

[0001] The present invention relates to a safety protection technology for a crane, and more specifically to a safety device used between a crane beam walkway and a trolley frame and a judgment method thereof. Background Art

[0002] As the automation level of the port industry continues to increase, the protection requirements for crane equipment have also increased. Since the layout design of automated quay cranes is very different from that of traditional quay cranes, a new and reliable solution is needed for the protection logic of personnel who go on board for maintenance, inspection, repair and other purposes.

[0003] For traditional bridge cranes, the landing path for personnel to reach the trolley frame and the hoisting equipment reel platform is generally to go through the main escalator channel safety door to the driver's cab platform, enter the platform around the driver's cab, and then climb up the trolley frame and reel platform along the straight ladder. If the trolley is not in the standard parking space, personnel need to climb over the handrails on the beam walkway to directly reach the trolley frame platform. However, in the process of climbing over the railings, the trolley mechanism is in operation at any time, which will pose a huge safety hazard to the staff. The currently commonly used experience plan is for the trolley frame landing personnel to confirm and communicate with the quay crane driver in the driver's cab, and climb over after excluding the movement of the trolley mechanism.

[0004] In recent years, with the increase in the efficiency of supporting control components, more and more quay cranes are moving towards unmanned and automated operations, and the manual intervention of drivers in the operation of quay crane equipment is becoming less and less. Many purely remote automated quay cranes even omit the driver's cab and driver's platform in their structural design. This has put forward new requirements and new solutions for the safe passage of the beam walkway and the trolley frame platform.

[0005] In view of the characteristics of automated terminals and unmanned quay cranes, the driver's cab and cab platform on the crane are cancelled and there is no full-time driver. Instead, the operation is controlled by an automated program, and manual intervention is also carried out from the central control center. When maintenance or inspection personnel are working on the quay crane, they cannot interact with the driver in real time to confirm the operation / disablement of the mechanism, which increases the probability of personal injury to the staff. Summary of the invention

[0006] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a safety device and a judgment method for the space between the crane beam walkway and the trolley frame, and to propose a safety solution for personnel to pass between the crane beam and the trolley frame, thereby effectively improving the safety protection of personnel and equipment.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] In one aspect, a safety device for use between a crane girder walkway and a trolley frame includes a safety door, an electronic door lock, a button with a status indicator light, and a PLC controller;

[0009] The safety door is arranged on the beam walkway, and the electronic door lock is arranged on the safety door;

[0010] The button with the status indicator light is installed on one side of the safety door and the trolley frame;

[0011] The button is connected to the input point signal of the PLC controller, and the status indicator light on the button is connected to the output point signal of the PLC controller;

[0012] The electronic door lock includes a lock module and an unlocking solenoid valve connected thereto;

[0013] The lock module is used to realize the opening and closing of the safety door;

[0014] The unlocking solenoid valve is connected to the output point signal of the PLC controller, and the locking switch quantity in the electronic door lock is connected to the input point signal of the PLC controller.

[0015] Preferably, the safety door is provided in plurality, and is respectively provided at the middle beam position and the front beam position of the beam walkway; and / or

[0016] The position of the trolley frame.

[0017] Preferably, the safety doors are all opened and closed by rotating through hinges and are arranged to open inwards.

[0018] Preferably, the lock module includes a lock bolt and a lock;

[0019] The locking bolt is arranged on the fence of the beam walkway for installing the safety door;

[0020] The lock head is connected to the lock bolt and can rotate 90 degrees around the lock bolt to lock / open the safety door.

[0021] On the other hand, a judgment method based on the safety device between the crane girder walkway and the trolley frame:

[0022] When the trolley is in a position where it cannot pass, the status indicator light is off and the safety door is locked; when the button is pressed, the status indicator light flashes and the trolley moves to a position where it can pass;

[0023] When the trolley is in a passable position, the status indicator light is always on and the safety door is open; after the person passes through the beam walkway, he presses the button on the other side, the safety door is locked again, and the trolley starts to operate.

[0024] Preferably, the judgment method includes judging whether a person enters the small frame from the beam channel and judging whether a person enters the beam channel from the small frame.

[0025] Preferably, the judgment of the personnel entering the small vehicle frame from the beam passage is specifically as follows:

[0026] 1) Determine whether the vehicle is in an impassable position, if so, proceed to step 2), if not, the vehicle moves and continues to determine;

[0027] 2) Press the button on the beam channel and the safety door opens;

[0028] 3) When a person passes through the beam channel, the trolley is prohibited from moving;

[0029] 4) After passing through the safety door on the trolley frame, press the button and the safety door will be locked;

[0030] 5) The trolley is allowed to run.

[0031] Preferably, the judgment of the personnel entering the beam channel from the small vehicle frame is specifically as follows:

[0032] 1) Determine whether the vehicle is in an impassable position, if so, proceed to step 2), if not, the vehicle moves and continues to determine;

[0033] 2) Press the button on the trolley frame and the safety door opens;

[0034] 3) When a person passes through the beam channel, the trolley is prohibited from moving;

[0035] 4) After passing through the safety door on the beam channel, press the button and the safety door will be locked;

[0036] 5) The trolley is allowed to run.

[0037] The safety device and judgment method for the crane girder walkway and trolley frame provided by the present invention have the following beneficial effects:

[0038] 1) The structure is simple and suitable for various types of quay crane scenarios or extended scenarios;

[0039] 2) The PLC controller has clear logic judgment and is easy to install and maintain;

[0040] 3) Support the expansion of various extension plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1It is a schematic diagram of the installation position of the safety device of the present invention on the crane girder walkway;

[0042] Figure 2 It is a schematic front view of the structure of the safety door in the safety device of the present invention;

[0043] Figure 3 yes Figure 2 A top view schematic diagram of

[0044] Figure 4 It is a schematic front view of the structure of the electronic door lock in the safety device of the present invention;

[0045] Figure 5 It is a schematic diagram of the judging process of a person entering a trolley frame from a beam passage in the judging method of the safety device of the present invention;

[0046] Figure 6 It is a schematic diagram of the judging process of a person entering a beam passage from a small vehicle frame in the judging method of the safety device of the present invention. DETAILED DESCRIPTION

[0047] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0048] Combination Figure 1 As shown, a safety device for use between a crane beam walkway and a trolley frame provided by the present invention comprises a safety door 1, an electronic door lock 2, a button with a status indicator light and a PLC controller.

[0049] The safety door 1 is installed at the middle beam position of the beam walkway 100 (see Figure 1 A position in the figure), front beam position (see Figure 1 or installed at position 200 on the trolley frame.

[0050] Combination Figure 2 and Figure 3 As shown, the safety door 1 is installed on the fence 3 at the corresponding position of the beam walkway 100. The safety door 1 is rotated and opened and closed by a hinge 4 and is set to open inward.

[0051] The safety door 1 is equipped with an electronic door lock 2, and buttons with status indicator lights are installed on the fence 3 at the side of the safety door 1 and on the trolley frame 200.

[0052] The button is connected to the input point signal of the PLC controller, and the status indicator light on the button is connected to the output point signal of the PLC controller.

[0053] Combination Figure 4 As shown, the electronic door lock 2 includes a lock module and an unlocking solenoid valve 5 connected thereto.

[0054] The unlocking solenoid valve 5 is connected to the output point signal of the PLC controller, and the locking switch quantity in the electronic door lock 2 is connected to the input point signal of the PLC controller.

[0055] The lock head module includes a lock bolt 6 and a lock head 7 .

[0056] The locking bolt 6 is installed on the fence 3 of the beam walkway 100 for installing the safety door 1.

[0057] The lock head 7 is connected to the lock bolt 6 and can rotate 90° around the lock bolt 6 to lock / open the safety door 1.

[0058] The present invention also provides a judgment method based on the safety device between the crane girder walkway and the trolley frame:

[0059] When the trolley is in a position that cannot be passed, the status indicator light is off and safety door 1 is locked; press the corresponding button, the status indicator light flashes, and the trolley moves to a passable position;

[0060] When the trolley is in a passable position, the status indicator light is always on and the safety door 1 is open; after the personnel passes through the beam walkway 200, they press the button on the other side, the safety door 1 is locked again, and the trolley starts to operate.

[0061] The judgment method includes judging whether a person enters the beam channel from the small frame and judging whether a person enters the beam channel from the small frame.

[0062] Combination Figure 5 As shown, the judgment of a person entering the trolley frame 200 from the beam channel 100 is specifically as follows:

[0063] 1) Determine whether the trolley is in an impassable position. If so, proceed to step 2). If not, the status indicator lights on the beam channel 100 and the trolley frame 200 are off, and the corresponding safety door 1 is locked. Then press the corresponding button, the status indicator lights on the beam channel 100 and the trolley frame 200 flash, and the corresponding safety door 1 continues to be locked. The trolley moves, and continues to determine whether the trolley is in a passable position.

[0064] 2) When the status indicator lights on the beam channel 100 and the trolley frame 200 are always on, press the button on the beam channel 200 and the corresponding safety door 1 will open;

[0065] 3) Personnel can pass through the beam channel 200, and the trolley is prohibited from moving at this time;

[0066] 4) After passing through the beam channel 200 and entering the safety door 1 on the trolley frame 200, press the corresponding button and the safety door 1 will be locked;

[0067] 5) The car is allowed to run at this time.

[0068] Combination Figure 6 As shown, the judgment of a person entering the beam channel 100 from the small vehicle frame 200 is specifically as follows:

[0069] 1) Determine whether the trolley is in an impassable position. If so, proceed to step 2). If not, the status indicator lights on the beam channel 100 and the trolley frame 200 are off, and the corresponding safety door 1 is locked. Then press the corresponding button, the status indicator lights on the beam channel 100 and the trolley frame 200 flash, and the corresponding safety door 1 continues to be locked. The trolley moves, and continues to determine whether the trolley is in a passable position.

[0070] 2) When the status indicator lights on the beam channel 100 and the trolley frame 200 are always on, press the button on the trolley frame 200, and the corresponding safety door 1 will open;

[0071] 3) When personnel pass through the beam channel 100, the trolley is prohibited from moving;

[0072] 4) When passing through the beam channel 100 and preparing to leave the beam channel 100, press the button corresponding to the safety door 1 on the beam channel 100, and the safety door 1 is locked;

[0073] 5) The car is allowed to run at this time.

[0074] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A safety device for use between a crane girder walkway and a trolley frame, characterized in that: Includes security door, electronic door lock, button with status indicator and PLC controller; The safety door is arranged on the beam walkway, and the electronic door lock is arranged on the safety door; The button with the status indicator light is installed on one side of the safety door and the trolley frame; The button is connected to the input point signal of the PLC controller, and the status indicator light on the button is connected to the output point signal of the PLC controller; The electronic door lock includes a lock module and an unlocking solenoid valve connected thereto; The lock module is used to realize the opening and closing of the safety door; The unlocking solenoid valve is connected to the output point signal of the PLC controller, and the locking switch quantity in the electronic door lock is connected to the input point signal of the PLC controller. The lock module includes a lock bolt and a lock; The locking bolt is arranged on the fence of the beam walkway for installing the safety door; The lock head is connected to the lock bolt and can rotate 90° around the lock bolt to lock / open the safety door. The safety device for the crane girder walkway and the trolley frame implements the following judgment method for the safety device for the crane girder walkway and the trolley frame, When the trolley is in a position where it cannot pass, the status indicator light is off and the safety door is locked; when the button is pressed, the status indicator light flashes and the trolley moves to a position where it can pass; When the trolley is in a passable position, the status indicator light is always on and the safety door is open; after the personnel passes through the beam walkway, they press the button on the other side, the safety door is locked again, and the trolley starts to run. The judgment method includes judging whether a person enters the small frame from the beam channel and judging whether a person enters the beam channel from the small frame. The judgment of the personnel entering the small vehicle frame from the beam channel is specifically as follows: 1) Determine whether the vehicle is in an impassable position, if so, proceed to step 2), if not, the vehicle moves and continues to determine; 2) Press the button on the beam channel and the safety door opens; 3) When a person passes through the beam channel, the trolley is prohibited from moving; 4) After passing through the safety door on the trolley frame, press the button and the safety door will be locked; 5) The trolley is allowed to run, The judgment of the personnel entering the beam channel from the small vehicle frame is specifically as follows: 1) Determine whether the vehicle is in an impassable position, if so, proceed to step 2), if not, the vehicle moves and continues to determine; 2) Press the button on the trolley frame and the safety door opens; 3) When a person passes through the beam channel, the trolley is prohibited from moving; 4) After passing through the safety door on the beam channel, press the button and the safety door will be locked; 5) The trolley is allowed to run.

2. The safety device for the crane girder walkway and the trolley frame according to claim 1 is characterized in that: There are multiple safety doors, which are respectively arranged at the middle beam position and the front beam position of the beam walkway; and / or The position of the trolley frame.

3. The safety device for the crane girder walkway and the trolley frame according to claim 2 is characterized in that: The safety doors are all opened and closed by rotating through hinges and are arranged to open inwards.

4. A method for determining the safety device between a crane girder walkway and a trolley frame based on any one of claims 1 to 3, characterized in that: When the trolley is in a position where it cannot pass, the status indicator light is off and the safety door is locked; when the button is pressed, the status indicator light flashes and the trolley moves to a position where it can pass; When the trolley is in a passable position, the status indicator light is always on and the safety door is open; after the personnel passes through the beam walkway, they press the button on the other side, the safety door is locked again, and the trolley starts to run. The judgment method includes judging whether a person enters the small frame from the beam channel and judging whether a person enters the beam channel from the small frame. The judgment of the personnel entering the small vehicle frame from the beam channel is specifically as follows: 1) Determine whether the vehicle is in an impassable position, if so, proceed to step 2), if not, the vehicle moves and continues to determine; 2) Press the button on the beam channel and the safety door opens; 3) When a person passes through the beam channel, the trolley is prohibited from moving; 4) After passing through the safety door on the trolley frame, press the button and the safety door will be locked; 5) The trolley is allowed to run, The judgment of the personnel entering the beam channel from the small vehicle frame is specifically as follows: 1) Determine whether the vehicle is in an impassable position, if so, proceed to step 2), if not, the vehicle moves and continues to determine; 2) Press the button on the trolley frame and the safety door opens; 3) When a person passes through the beam channel, the trolley is prohibited from moving; 4) After passing through the safety door on the beam channel, press the button and the safety door will be locked; 5) The trolley is allowed to run.

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