Electric pallet truck
View Patent ↗The present disclosure is related to an electric pallet truck. The electric pallet truck includes a frame, a lifting unit, and a walking unit. The lifting unit is configured to adjust a height of the frame. The walking unit is configured to drive the frame to move. The lifting unit includes a lifting mechanism fixedly connected to the frame and a hydraulic mechanism configured to control a lifting of the lifting mechanism. The walking unit includes a driving mechanism configured at a bottom of the lifting mechanism.
1. An electric pallet truck, comprising:
a frame;
a lifting unit adjusting a height of the frame; and
a walking unit driving the frame to move; wherein:
the lifting unit includes a lifting mechanism fixedly connected to the frame and a hydraulic mechanism controlling lifting of the lifting mechanism, the walking unit includes a driving mechanism disposed on a bottom of the lifting mechanism;
wherein: the driving mechanism includes a gear transmission unit and a gear box accommodating the gear transmission unit;
the lifting mechanism includes a bearing component;
the gear box is located at a bottom of the bearing component;
the gear transmission unit includes a second motor fixed on the gear box, a drive gear rotatably connected with the second motor, and a gear sleeve rotatably connected with the drive gear;
the gear sleeve is fixedly connected with a driving wheel;
a rotation of the second motor drives a rotation of the drive gear and a rotation of the gear sleeve;
the gear transmission unit includes a shaft gear disposed between the drive gear and the gear sleeve; and
the shaft gear is coaxially disposed with the drive gear and meshes with the gear sleeve;
the gear transmission unit includes a pinion gear disposed between the second motor and the drive gear; and
the pinion gear is sleeved on a motor shaft of the second motor and meshes with the drive gear.
2. The electric pallet truck of claim 1 , wherein:
the electric pallet truck includes a power supply unit disposed on an end of the frame; and
the power supply unit is supplying power to at least one of the hydraulic mechanism or the driving mechanism.
3. The electric pallet truck of claim 2 , wherein:
the hydraulic mechanism is disposed on the end of the frame, and the hydraulic mechanism is located on the power supply unit.
4. The electric pallet truck of claim 2 , wherein:
the power supply unit includes a power connector and a box battery connected to the power connector; and
a connection between the power connector and the box battery is a quick-plug type.
5. The electric pallet truck of claim 4 , wherein:
the frame is provided with a mounting part fixing the power connector;
the power connector is provided with a plug component;
the box battery is provided with a power supply port; and
the movement of the box battery relative to the power connector along a first direction can realize a connection and a separation between the plug component and the power supply port.
6. The electric pallet truck of claim 5 , wherein:
the mounting part includes a mounting groove disposed on a plate of the frame.
7. The electric pallet truck of claim 1 , wherein:
the lifting mechanism includes the bearing component and a cylinder seat fixed on the bearing component; and
an end of a piston rod on the cylinder seat is fixedly connected to the frame.
8. The electric pallet truck of claim 7 , wherein:
the hydraulic mechanism includes an oil tank disposed on the frame, a valve group disposed on the oil tank, a first motor configured on the valve group and controlling the valve group, and a relay configured on a side of the first motor; and
the valve group is connected to the piston rod through a lifting oil pipe.
9. The electric pallet truck of claim 1 , wherein:
the electric pallet truck includes a link unit connected with the frame and the lifting unit;
the link unit includes a support shaft fixedly disposed on the frame, a first rib and a second rib rotatably disposed on the support shaft;
a first end of the first rib is connected with the lifting unit; and
a first end of the second rib is connected with the frame.
10. The electric pallet truck of claim 9 , wherein:
a second end of the first rib is rotatably connected with the bearing component of the lifting mechanism; and
a second end of the second rib is rotatably connected with a push rod of the frame.
11. The electric pallet truck of claim 9 , wherein:
the first rib is connected with the second rib through a spacer.
12. The electric pallet truck of claim 1 , wherein:
the electric pallet truck includes a control unit connected with the driving mechanism;
an accelerator is configured on an operating rod of the control unit; and
the accelerator is adjusting a rotation rate of the second motor.
13. The electric pallet truck of claim 7 , wherein:
a side of the power supply unit is provided with a baffle;
the baffle is fixedly installed on the frame; and
the end of the piston rod is fixedly connected with the baffle.
14. The electric pallet truck of claim 13 , wherein:
the frame includes a plate; and
the baffle is fixedly disposed on the plate.
15. The electric pallet truck of claim 13 , wherein:
a side of the baffle is provided with a first cover;
the first cover is fixed on the frame; and
a side of the driving mechanism is provided with a second cover.
16. The electric pallet truck of claim 15 , wherein:
the electric pallet truck includes a switch; and
the switch is provided on at least one of the baffle, the piston rod, or the first cover.