Improved hydraulic lifting device

Abstract

The utility model provides an improved hydraulic lifting device, including hydraulic lifting car body, ground distribution box, plug and socket, be provided with oil pump motor, hydraulic oil pump and control system on the hydraulic lifting car, and control system includes from station PLC, actuating mechanism and feedback mechanism, has set up the socket on the both sides of hydraulic lifting car body, when hydraulic lifting car body removes to the driveway, the plug can be connected with the socket, realizes the power supply and communication to hydraulic lifting car body, and adopts the oil pump motor of electric drive to replace traditional diesel engine to drive the hydraulic oil pump, can reduce the maintenance frequency, reduces the use cost, reduces the emission of pollution gas simultaneously, avoids the pollution of atmospheric environment, when carrying out the container lifting, realizes the automation of lifting through actuating mechanism, and detects whether the lifting is in place through feedback mechanism, guarantees the stable loading and unloading of container.

Description

Technical Field

[0001] This utility model relates to the field of container transportation technology, and in particular to an improved hydraulic lifting device. Background Technology

[0002] Existing container hydraulic lifts typically use diesel engines as the power source for their hydraulic systems, a configuration with several significant drawbacks. Regarding failure rates and maintenance costs, the frequent operation of hydraulic lifts, with diesel engines starting more than 30 times daily, leads to frequent equipment malfunctions. Monthly downtime for repairs due to fuel system issues (such as clogged injectors or fuel pump failures), lubrication system problems (such as oil leaks or clogged filters), and cooling system anomalies (such as water tank leaks or fan malfunctions) increases dramatically, raising the cost per repair and consequently increasing the total annual maintenance expenses. Furthermore, frequent start-stop cycles easily cause excessive cylinder wear, requiring a major overhaul every two years on average. This not only further increases maintenance costs but also significantly shortens the engine's overall lifespan. Simultaneously, diesel engines emit large amounts of nitrogen oxides and other pollutants during operation. These harmful gases not only negatively impact the health of on-site workers but also cause continuous air pollution, contradicting the concept of green and environmentally friendly development. Utility Model Content

[0003] In view of this, this utility model proposes an improved hydraulic lifting device, which uses an electric motor to replace the traditional diesel engine, which can not only reduce the number of maintenance times, but also avoid environmental pollution.

[0004] The technical solution of this utility model is implemented as follows:

[0005] An improved hydraulic lifting device includes a hydraulic lifting vehicle body, a ground distribution box, a plug, and a socket. The ground distribution box is located on one side of the driveway and houses a PLC controller. The plug is electrically connected to the PLC controller. The sockets are located on both sides of the hydraulic lifting vehicle body. The hydraulic lifting vehicle body is equipped with an oil pump motor, a hydraulic oil pump, and a control system. The oil pump motor is installed in the original diesel engine mounting position of the hydraulic lifting vehicle body, and its output shaft is connected to the drive end of the hydraulic oil pump via a flexible coupling. The control system includes a slave PLC, an actuator, and a feedback mechanism. The actuator is used to perform the opening and closing of the lifting device and the raising and lowering of the outriggers. The feedback mechanism is used to detect whether the lifting and outriggers are in position. The slave PLC is electrically connected to the oil pump motor, the actuator, and the feedback mechanism. The PLC controller and the slave PLC communicate with each other through the plug and socket connection.

[0006] Preferably, the actuator includes a spreader opening / closing push rod and a leg lifting solenoid valve. The spreader opening / closing push rod is installed on both sides of the spreader of the hydraulic lifting vehicle body, and the leg lifting solenoid valve is installed in the hydraulic oil circuit of the leg of the hydraulic lifting vehicle body. The slave PLC is electrically connected to the spreader opening / closing push rod and the leg lifting solenoid valve respectively.

[0007] Preferably, it also includes a lift vehicle positioning sensor, which is located on one side of the lane and electrically connected to the PLC controller.

[0008] Preferably, the ground distribution box is also equipped with a soft starter, which is electrically connected to the plug.

[0009] Preferably, it also includes a distributed power supply cabinet, which is electrically connected to the soft starter.

[0010] Preferably, the feedback mechanism includes a lifting limit switch and a outrigger lifting limit switch. The lifting limit switch is installed on the top of the lifting cylinder of the hydraulic lift vehicle body and is used to detect the lifting height. The outrigger lifting limit switch is embedded in the bottom of the outrigger of the hydraulic lift vehicle body and is used to detect the lifting height of the outrigger. The slave PLC is electrically connected to the lifting limit switch and the outrigger lifting limit switch respectively.

[0011] Preferably, it also includes a remote controller, which is wirelessly connected to the PLC controller.

[0012] Preferably, the oil pump motor is a three-phase asynchronous AC motor.

[0013] Preferably, it also includes a distributed-to-centralized control cabinet, which is equipped with a photoelectric switch, and the ground distribution box is equipped with a photoelectric module. The PLC controller is electrically connected to the photoelectric switch through the photoelectric module.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model discloses an improved hydraulic lifting device. The hydraulic lifting vehicle body and the ground distribution box are electrically connected via a plug and socket. When the hydraulic lifting vehicle body travels into the driveway, the sockets can be connected to each other to provide power and communication. The use of an electrically driven oil pump motor to drive the hydraulic oil pump for lifting instead of a traditional diesel engine reduces maintenance frequency and avoids excessive emissions of pollutants. In addition, the actuator can control the opening and closing of the spreader and the raising and lowering of the outriggers during the lifting process, thereby fixing the container and adjusting its height. At the same time, the feedback mechanism can detect whether the lifting and lowering are in place, so as to stop the drive and ensure accurate container placement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a circuit connection diagram of an improved hydraulic lifting device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the control system and peripheral connection circuit of an improved hydraulic lifting device according to this utility model;

[0019] In the diagram: 1. Hydraulic lifting vehicle body; 2. Ground distribution box; 3. Plug; 4. Socket; 5. PLC controller; 6. Oil pump motor; 7. Hydraulic oil pump; 8. Control system; 9. Slave PLC; 10. Lifting device opening / closing push rod; 11. Outrigger lifting solenoid valve; 12. Lifting vehicle position sensor; 13. Soft starter; 14. Converted from bulk to centralized power supply cabinet; 15. Lifting limit switch; 16. Outrigger lifting limit switch; 17. Remote control; 18. Converted from bulk to centralized control cabinet; 19. Photoelectric switch; 20. Photoelectric module. Detailed Implementation

[0020] To better understand the technical content of this utility model, a specific embodiment is provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0021] See Figures 1 to 2 This utility model provides an improved hydraulic lifting device, including a hydraulic lifting vehicle body 1, a ground distribution box 2, a plug 3, and a socket 4. The ground distribution box 2 is located on one side of the driveway and contains a PLC controller 5. The plug 3 is electrically connected to the PLC controller 5. The socket 4 is located on both sides of the hydraulic lifting vehicle body 1. The hydraulic lifting vehicle body 1 is equipped with an oil pump motor 6, a hydraulic oil pump 7, and a control system 8. The oil pump motor 6 is installed at the original diesel engine mounting position of the hydraulic lifting vehicle body 1, and its output shaft is connected to the drive end of the hydraulic oil pump 7 through a flexible coupling. The control system 8 includes a slave PLC 9, an actuator, and a feedback mechanism. The actuator is used to perform the opening and closing of the lifting device and the raising and lowering of the outriggers. The feedback mechanism is used to detect whether the lifting and outriggers are in position. The slave PLC 9 is electrically connected to the oil pump motor 6, the actuator, and the feedback mechanism respectively. The PLC controller 5 and the slave PLC 9 communicate through the connection between the plug 3 and the socket 4.

[0022] This utility model discloses an improved hydraulic lifting device, mainly comprising improvements to the hydraulic lifting vehicle body 1 and the ground distribution box 2. The original diesel engine in the hydraulic lifting vehicle body 1 is replaced with an electrically driven oil pump motor 6. The output shaft of the oil pump motor 6 is connected to the drive end of the hydraulic oil pump 7 via a flexible coupling, enabling the hydraulic oil pump 7 to perform lifting. Replacing the diesel engine with an electrically driven oil pump motor 6 reduces maintenance frequency and emissions of pollutants, preventing environmental pollution. To facilitate the connection between the hydraulic lifting vehicle body 1 and the ground distribution box 2, sockets 4 are provided on both sides of the hydraulic lifting vehicle body 1. When the hydraulic lift vehicle body 1 moves to one side of the lane and is located next to the ground distribution box 2, the plug 3 is connected to the socket 4 to supply power to the hydraulic lift vehicle. At the same time, the communication connection between the PLC controller 5 and the slave PLC 9 is realized. During the lifting process, the slave PLC 9 can drive the actuator to perform the opening and closing of the spreader and the raising and lowering of the outriggers. The opening and closing of the spreader can realize the fixing and loosening of the container, while the raising and lowering of the outriggers can realize the height adjustment, so that the container is raised and lowered to the designated position. During the execution, the feedback mechanism can also detect the lifting height and the height of the outriggers to determine whether it is in place. When it is in place, the slave PLC 9 stops driving.

[0023] The socket 4 includes a communication section, a control power supply section, and a main power supply section. The communication section is used to realize the communication connection between the PLC controller 5 and the slave PLC 9. The control power supply is used to supply power to the slave PLC 9, while the main power supply section can be used to supply power to the oil pump motor 6, etc.

[0024] Preferably, the actuator includes a spreader opening / closing push rod 10 and a leg lifting solenoid valve 11. The spreader opening / closing push rod 10 is installed on both sides of the spreader of the hydraulic lifting vehicle body 1, and the leg lifting solenoid valve 11 is installed in the hydraulic oil circuit of the leg of the hydraulic lifting vehicle body 1. The slave PLC 9 is electrically connected to the spreader opening / closing push rod 10 and the leg lifting solenoid valve 11 respectively.

[0025] The spreader opening and closing push rod 10 can drive the spreader to open and close, thereby fixing and releasing the container, while the outrigger lifting solenoid valve 11 can control the lifting of the outrigger.

[0026] Preferably, it also includes a lift vehicle positioning sensor 12, which is located on one side of the lane and electrically connected to the PLC controller 5.

[0027] The lift vehicle positioning sensor 12 is installed on one side of the lane to detect whether the hydraulic lift vehicle body 1 has moved into position.

[0028] Preferably, the ground distribution box 2 is also equipped with a soft starter 13, which is electrically connected to the plug 3, and also includes a distributed power supply cabinet 14, which is electrically connected to the soft starter 13.

[0029] The power supply of the bulk-to-consolidated power cabinet 14 is connected to the plug 3 via the soft starter 13, so that the power can be transmitted to the electrical equipment of the hydraulic lifting vehicle body 1 through the plug 3 and the socket 4.

[0030] Preferably, the feedback mechanism includes a lifting limit switch 15 and a outrigger lifting limit switch 16. The lifting limit switch 15 is installed on the top of the lifting cylinder of the hydraulic lifting vehicle body 1 and is used to detect the lifting height. The outrigger lifting limit switch 16 is embedded in the bottom of the outrigger of the hydraulic lifting vehicle body 1 and is used to detect the lifting height of the outrigger. The slave PLC 9 is electrically connected to the lifting limit switch 15 and the outrigger lifting limit switch 16 respectively.

[0031] The lifting limit switch 15 is used to detect the lifting height of the lifting cylinder, while the outrigger lifting limit switch 16 is used to detect the lifting height of the outrigger. When the height reaches the specified position, the slave PLC9 can stop the drive of the actuator.

[0032] Preferably, it also includes a remote controller 17, which is wirelessly connected to the PLC controller 5.

[0033] The ground distribution box 2 can be wirelessly controlled via remote controller 17, for example, by sending control commands to the PLC controller 5.

[0034] Preferably, the oil pump motor 6 is a three-phase asynchronous AC motor.

[0035] A three-phase asynchronous AC motor can replace a diesel engine, which not only reduces the number of maintenance operations but also avoids emitting excessive pollutants.

[0036] Preferably, the system also includes a distributed-to-centralized control cabinet 18, which is equipped with a photoelectric switch 19. The ground distribution box 2 is equipped with a photoelectric module 20, and the PLC controller 5 is electrically connected to the photoelectric switch 19 through the photoelectric module 20.

[0037] The optoelectronic module 20 and optoelectronic switch 19 can be used to convert optoelectronic data, so as to achieve high-speed and encrypted data transmission.

[0038] The automatic control logic of this utility model consists of the following steps:

[0039] ① The hydraulic lifting vehicle body 1 should have its box door opened and be parked in the driveway of the box-making workshop (the position must be correct);

[0040] ② The truck driver gets off the truck and plugs in the main power and control power plugs 3 (the indicator light will illuminate when the plugs are fully inserted).

[0041] ③ Start the oil pump motor 6 remotely or manually (or start automatically after a 10-second delay).

[0042] ④ Automatic interlocking of the spreader (the spreader is in the unlocked state, at which time the interlocking command is triggered);

[0043] ⑤ The outrigger lifting mechanism extends automatically (the action stops when it reaches the limit).

[0044] ⑥ Hydraulic cylinder lifting action (the action stops when the cylinder reaches the limit);

[0045] ⑦ The box is lifted into place (the oil pump automatically stops to prevent malfunction).

[0046] ⑧ Workers close the box doors and apply lead seals.

[0047] ⑨ Loading and unloading workers should close the box doors properly;

[0048] ⑩ Loading and unloading workers can remotely or manually operate the main hydraulic cylinder to lower (the action stops when it reaches the limit, or it enters the automatic lowering program after 10 seconds of descent).

[0049] ⑪ Automatic unlocking of the spreader (the spreader is in a locked state, and the unlocking command is triggered at this time);

[0050] ⑫ The outrigger lifting mechanism retracts (the retraction stops when it reaches the limit).

[0051] ⑬ The box is placed in place (the oil pump stops running automatically);

[0052] ⑭ The truck driver unplugs the main power and control power plugs 3;

[0053] ⑮ The truck driver gets on the truck, starts the engine, and drives away.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An improved hydraulic lifting device, characterized in that, The system includes a hydraulic lift vehicle body, a ground distribution box, plugs, and sockets. The ground distribution box is located on one side of the driveway and houses a PLC controller. The plugs are electrically connected to the PLC controller. The sockets are located on both sides of the hydraulic lift vehicle body. The hydraulic lift vehicle body is equipped with an oil pump motor, a hydraulic oil pump, and a control system. The oil pump motor is installed in the original diesel engine mounting position of the hydraulic lift vehicle body, and its output shaft is connected to the drive end of the hydraulic oil pump via a flexible coupling. The control system includes a slave PLC, an actuator, and a feedback mechanism. The actuator is used to perform the opening and closing of the lifting device and the raising and lowering of the outriggers. The feedback mechanism is used to detect whether the lifting and outriggers are in position. The slave PLC is electrically connected to the oil pump motor, the actuator, and the feedback mechanism. The PLC controller and the slave PLC communicate with each other through the plug and socket connection.

2. The improved hydraulic lifting device according to claim 1, characterized in that, The actuator includes a spreader opening / closing push rod and an outrigger lifting solenoid valve. The spreader opening / closing push rod is installed on both sides of the spreader of the hydraulic lifting vehicle body. The outrigger lifting solenoid valve is installed in the hydraulic oil circuit of the outrigger of the hydraulic lifting vehicle body. The slave PLC is electrically connected to the spreader opening / closing push rod and the outrigger lifting solenoid valve respectively.

3. The improved hydraulic lifting device according to claim 1, characterized in that, It also includes a lift vehicle positioning sensor, which is located on one side of the lane and electrically connected to the PLC controller.

4. An improved hydraulic lifting device according to claim 1, characterized in that, The ground distribution box is also equipped with a soft starter, which is electrically connected to the plug.

5. An improved hydraulic lifting device according to claim 4, characterized in that, It also includes a distributed power supply cabinet, which is electrically connected to a soft starter.

6. An improved hydraulic lifting device according to claim 1, characterized in that, The feedback mechanism includes a lifting limit switch and a outrigger lifting limit switch. The lifting limit switch is installed on the top of the lifting cylinder of the hydraulic lift vehicle body and is used to detect the lifting height. The outrigger lifting limit switch is embedded in the bottom of the outrigger of the hydraulic lift vehicle body and is used to detect the lifting height of the outrigger. The slave PLC is electrically connected to the lifting limit switch and the outrigger lifting limit switch respectively.

7. An improved hydraulic lifting device according to claim 1, characterized in that, It also includes a remote control, which is wirelessly connected to the PLC controller.

8. An improved hydraulic lifting device according to claim 1, characterized in that, The oil pump motor is a three-phase asynchronous AC motor.

9. An improved hydraulic lifting device according to claim 1, characterized in that, It also includes a control cabinet for converting distributed systems into centralized systems, which is equipped with a photoelectric switch. The ground distribution box is equipped with a photoelectric module, and the PLC controller is electrically connected to the photoelectric switch through the photoelectric module.

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