Safety access control system for loading and unloading of crane

Abstract

A safety access control system for getting on and off a crane comprises a get-on and get-off door control box, a cab response client, a direct-current driving motor and a sensor. The cab response client side is electrically connected with the car door getting-on and getting-off control box, the car door getting-on and getting-off control box is electrically connected with the direct-current driving motor and the sensors, and the sensors comprise the in-place opening sensor, the in-place closing sensor and the anti-extrusion sensor. According to the system, the probability of safety accidents can be reduced, and the safety and effectiveness of production are ensured.

Description

Technical Field

[0001] The utility model belongs to the field of cranes, and particularly relates to a crane boarding and alighting safety door control system. Background Art

[0002] A crane is a type of lifting equipment that is placed horizontally on elevated tracks above warehouses, workshops, etc. to transport materials. During its operation, it will be associated with a variety of ground and above-ground equipment. If there is a problem with the crane itself, it will cause safety accidents to the equipment and especially to personnel.

[0003] During the operation of the crane, people need to contact the operator before getting on or off the crane, and only after obtaining consent can they get on or off the crane. In actual applications, people often operate improperly, open the door without permission, or fail to close the door after getting on the crane, which seriously affects the safe operation of the crane and greatly reduces the operating efficiency. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a crane boarding and alighting safety door control system, which can reduce the probability of safety accidents and ensure the safety and effectiveness of production.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A crane boarding and disembarking safety access control system comprises an boarding and disembarking door control box, a driver's cab response client, a DC drive motor and a sensor; the driver's cab response client is electrically connected to the boarding and disembarking door control box, and the boarding and disembarking door control box is electrically connected to the DC drive motor and the sensor respectively, and the sensor comprises an open position sensor, a closed position sensor and an anti-squeezing sensor.

[0007] Furthermore, the door control box includes a boarding and exiting request button, a boarding and exiting completion button, and a boarding and exiting indication button.

[0008] Furthermore, there are multiple door control boxes, each of which is wirelessly connected to a driver's cab response client; the door control boxes are used to be installed at the boarding door position of the crane.

[0009] Furthermore, the DC drive motor drives the boarding door to open and close.

[0010] Further, the button for requesting to get on or off the vehicle is used when the operator actively requests to get on or off the vehicle.

[0011] Further, the boarding and alighting completion button is used when the operator has completed boarding or alighting the vehicle.

[0012] Furthermore, the boarding and alighting indication buttons are used to respond on the driver's cab response client.

[0013] The utility model can achieve the following beneficial effects:

[0014] The utility model is based on production practice, combines the advantages and disadvantages of the contact boxes for getting on and off the crane of various manufacturers, and proposes a safe access control system for getting on and off the crane. The system can reduce the probability of safety accidents and ensure the safety and effectiveness of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a system diagram of the utility model.

[0017] In the figure: driver's cab response client 1, upper and lower door control box 2, DC drive motor 3, open position sensor 4, closed position sensor 5, anti-squeeze sensor 6. DETAILED DESCRIPTION

[0018] The preferred solution is Figure 1 As shown, a crane boarding and disembarking safety access control system includes an boarding and disembarking door control box, a driver's cab response client, a DC drive motor and a sensor; the driver's cab response client is electrically connected to the boarding and disembarking door control box, and the boarding and disembarking door control box is electrically connected to the DC drive motor and the sensor respectively, and the sensor includes an open position sensor, a closed position sensor and an anti-squeezing sensor.

[0019] The door control box for getting on and off the vehicle comprises a button for requesting getting on and off the vehicle, a button for completing getting on and off the vehicle and a button for indicating getting on and off the vehicle.

[0020] There are multiple upper and lower door control boxes, each of which is wirelessly connected to a driver's cab response client; the upper and lower door control boxes are used to be installed at the boarding door position of the crane.

[0021] The DC drive motor drives the boarding door to open and close.

[0022] The button for requesting to get on or off the bus is used when the operator actively requests to get on or off the bus.

[0023] The boarding and alighting completion button is used when the operator has completed boarding or alighting.

[0024] The on-and-off indication buttons are used to respond on the driver's cab response client.

[0025] This system consists of a door control box, a driver's cab response client, a DC drive motor, a sensor, etc. Two buttons, a request boarding and disembarking button and a boarding and disembarking completion button, as well as an indicator light for allowing boarding and disembarking are set on the door control box. When operating normally, the person getting on the bus presses the request boarding and disembarking button, and the driver's cab response client responds to the request, and the indicator light for allowing boarding and disembarking lights up. At this time, the boarding door will automatically open. After waiting for boarding to be completed, the person getting on the bus presses the button for completing boarding and disembarking, and the boarding door will automatically close.

[0026] The operation process of this system is as follows:

[0027] 1) The boarding door can be opened and closed automatically without manual operation. The boarding door is controlled by a DC drive motor.

[0028] 2) An anti-squeeze sensor is installed on the boarding door. Once a squeeze is detected when opening or closing the door, the door opening and closing action will be stopped, and the driver's room client will be notified of the abnormality and wait for manual confirmation. The anti-squeeze sensor is a pressure sensor.

[0029] 3) Detection sensors are set at the boarding door's open position and closed position to detect the position signal. Once the position is reached, the DC drive motor will stop. The open position sensor and the closed position sensor are position switches or limit switches.

[0030] 4) After the boarding door is opened, a signal prohibiting the trolley from running is sent to the driver's room response client, and the crane trolley will stop running immediately to protect the safety of personnel. The driver's room response client is a control terminal. The driver's room response client is a controller such as a PLC.

[0031] 5) The control box for boarding and alighting doors is equipped with a visual video dialogue system, which uses video to grasp the dynamic information of each boarding gate in real time.

[0032] 6) This system has reserved interfaces such as DP, Ethernet, RS232, RS485, and wireless communication, which is convenient for access to systems such as cranes or workshops.

[0033] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A crane boarding and alighting safety access control system, characterized in that: It includes an upper and lower door control box, a driver's cab response client, a DC drive motor and a sensor; the driver's cab response client is electrically connected to the upper and lower door control box, and the upper and lower door control box is electrically connected to the DC drive motor and the sensor respectively, and the sensor includes an open position sensor, a closed position sensor and an anti-squeezing sensor.

2. A crane boarding and alighting safety access control system according to claim 1, characterized in that: The door control box includes a boarding and getting-in button, a boarding and getting-out button, and a boarding and getting-out indication button.

3. A crane boarding and alighting safety access control system according to claim 1, characterized in that: There are multiple upper and lower door control boxes, and each upper and lower door control box is wirelessly connected to a driver's cab response client; the upper and lower door control box is used to be installed at the boarding door position of the crane.

4. A crane boarding and alighting safety access control system according to claim 3, characterized in that: The DC drive motor drives the boarding door to open and close.

5. A crane boarding and alighting safety access control system according to claim 2, characterized in that: The request to get on or off button is used when the operator actively requests to get on or off the vehicle.

6. A crane boarding and alighting safety access control system according to claim 2, characterized in that: The boarding and alighting completion button is used when the operator has completed boarding or alighting.

7. A crane boarding and alighting safety access control system according to claim 2, characterized in that: The boarding and alighting indication buttons are used to respond on the driver's cab response client.

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