US-12617444-B2 - Electric mini push cart

Abstract

An electric mini push cart provided includes a cart frame, an operation platform, a bucket, and a hydraulic power device. The operation platform arranged on the rear side. The bucket is configured to load objects and located on one side of the operation platform. The hydraulic power device drives the bucket to turn over, the hydraulic power device is installed on the cart frame and located below the bucket, the hydraulic power device includes a piston rod connected to the first end. When the hydraulic power device is working, the piston rod is stretched or retracted to push or pull back the first end, so that the bucket turns around the second end, and moves away from the operation platform or falls back towards the operation platform.

Inventors

• Chencheng Li

Assignees

• Weifang Austter Industry and Trade Co., Ltd.

Dates

Publication Date

20260505

Application Date

20230602

Priority Date

20220613

Claims (19)

1. 1 . An electric mini push cart, comprising: a cart frame, including a front side and a rear side; an operation platform arranged on the rear side; a bucket, configured to load objects and located on one side of the operation platform; the bucket including a first end close to the operation platform and a second end away from the first end, the second end being rotatably installed on the front side; and a hydraulic power device, driving the bucket to turn over, the hydraulic power device installed on the cart frame and located below the bucket, the hydraulic power device including a piston rod connected to the first end, wherein when the hydraulic power device is working, the piston rod is stretched or retracted to push or pull back the first end, so that the bucket turns around the second end, and moves away from the operation platform or falls back in a direction towards the operation platform; wherein, the hydraulic power device further comprises an oil cylinder, a hydraulic power unit, and a hydraulic oil pipe connected between the oil cylinder and the hydraulic power unit; the hydraulic power unit is arranged on the cart frame to provide power for the oil cylinder; the oil cylinder is also connected to the piston rod, and an end of the oil cylinder far away from the piston rod is provided with a first installing part, an end of the piston rod far away from the piston rod is provided with a second installing part, the first installing part is fixed to the cart frame, and the second installing part is fixed to the bucket; wherein, the electric mini push cart further comprises an assembly box, and battery packs; the assembly box is suspended from the cart frame and below the bucket, the assembly box includes a first receiving portion and two second receiving portions located on both sides of the first receiving portion; the hydraulic power unit is accommodated in the first receiving portion, each of the two second receiving portions are configured to place one battery pack.
2. 2 . The electric mini push cart according to claim 1 , wherein the first installing part includes a first connecting shaft, and the second installing part includes a second connecting shaft parallel to the first connecting shaft, the piston rod extends along a first direction, the first connecting shaft and the second connecting shaft are placed perpendicular to the first direction in which the piston rod extends, and two ends of the first connecting shaft are connected to the cart frame, and two sections of the second connecting shaft are connected with the bucket.
3. 3 . The electric mini push cart according to claim 1 , the hydraulic oil pipe is partially accommodated in the assembly box, and partly passes through the assembly box, the oil cylinder is located outside the assembly box, and is located on one side of the assembly box away from the operation platform.
4. 4 . The electric mini push cart according to claim 3 , wherein the assembly box includes a bottom, the hydraulic oil pipe includes an oil outlet pipe and an oil return pipe, and the oil outlet pipe and the oil return pipe are also passed through the bottom for positioning the oil outlet pipe and oil return pipe.
5. 5 . The electric mini push cart according to claim 4 , wherein the hydraulic power unit includes a first oil outlet and a first oil return port, and the oil cylinder includes a second oil outlet and a second oil return port, the first oil outlet and the second oil outlet communicate with each other via the oil outlet pipe, the first oil return port and the second oil return port communicate with each other via the oil return pipe, the first oil return port and the first oil outlet are respectively located on different opposite sides of the hydraulic unit, and the second oil return port and the second oil outlets are respectively located on the same side of the oil cylinder; one of the oil outlet pipe and the oil return pipe is located in the assembly box and partially wound around the hydraulic power unit to be connected with the oil outlet pipe, and extends adjacently and side by side with the other one of the oil return pipe and the oil return pipe.
6. 6 . The electric mini push cart according to claim 1 , wherein the cart frame includes a front fender, and two symmetrical longitudinal beams, the front fender is located opposite to the operation platform, and the front fender are respectively connected end to end with two longitudinal beams to form the cart frame, and the assembly box is suspended under the two longitudinal beams.
7. 7 . The electric mini push cart according to claim 1 , wherein the operation platform includes a control assembly to control operation of the hydraulic power device.
8. 8 . The electric mini push cart according to claim 1 , wherein the electric mini push cart further comprises a locking mechanism and a wheel assembly, the wheel assembly comprises universal wheels, each universal wheel comprising a wheel and wheel housing, the locking mechanism having a pin shaft assembly to detachably insert to the wheel housing to enable the universal wheel to move in one fixed direction.
9. 9 . The electric mini push cart according to claim 8 , wherein the locking mechanism further comprises two socket parts, a locking hole defined in the wheel housing, the pin shaft assembly further comprises a locking rod, an elastic member sleeved on the locking rod, and an operating member fixed at one end of the locking rod, the operating member is pivotally connected to one end of the locking rod, the locking rod can be inserted into the locking hole by the operating member and locked to the universal wheel to be relatively fixed, and the elastic member is compressed to generate elastic force.
10. 10 . The electric mini push cart according to claim 9 , wherein the locking rod is unlocked when the operating member is operated, and the locking rod is separated from the locking hole under the elastic force, and the wheel is restored to rotate relative to the cart frame.
11. 11 . The electric mini push cart according to claim 10 , wherein the operating member is pivoted to the locking rod, the locking rod is locked when the operating member is rotated to a first angle, and the locking rod is unlocked when the operating member is rotated to a second angle.
12. 12 . The electric mini push cart according to claim 11 , wherein a quantity of the universal wheels is two, the universal wheels are mounted on the rear side of the cart frame.
13. 13 . The electric mini push cart according to claim 8 , wherein the wheel assembly comprises: a frame body, fixed to the cart frame along a transverse direction; a crossbeam, passing through the frame body along the transverse direction, a gap forming between the crossbeam and the frame body in a longitudinal direction, and the gap configured to enable the crossbeam to move in a vertical direction; two wheels, symmetrically mounted to the crossbeam; and a pin shaft, running through the frame body and the crossbeam located in the frame body, and enabling the crossbeam to be pivoted to the frame body, the transverse direction and the longitudinal direction being in a horizontal plane and perpendicular to each other.
14. 14 . The electric mini push cart according to claim 1 , further comprising a handle assembly which comprises two handles, wherein one of the handles equipped with a safety handbrake, the safety handbrake comprises a trigger part sleeved on the one handle, and a pressing piece rotatably connected to the trigger part, the trigger part is electrically connected to an electromagnetic brake through a cable, and is configured to trigger the electromagnetic brake to work or stop working.
15. 15 . The electric mini push cart according to claim 1 , further comprising a handle assembly which comprises two handles, wherein one of the handles equipped with an accelerator control assembly, the accelerator control assembly comprises a rotating part and an accelerator operating part disposed on the rotating part, the accelerator operating part protrudes toward the other handle along a direction perpendicular to the handle.
16. 16 . The electric mini push cart according to claim 15 , wherein the accelerator operating part includes a pressing surface adapted to a shape of a front side of a thumb.
17. 17 . The electric mini push cart according to claim 15 , further comprising: a first lighting assembly rotatably installed on the operating platform; and a second lighting assembly mounted on the front of the cart frame.
18. 18 . An electric mini push cart, comprising: a cart frame, including a front side and a rear side; an operation platform arranged on the rear side; a bucket, configured to load objects and located on one side of the operation platform; and a hydraulic power device, driving the bucket to turn over, the hydraulic power device installed on the cart frame and located below the bucket, the hydraulic power device including a piston rod connected to the bucket, wherein when the hydraulic power device is working, the piston rod is stretched or retracted, so that the bucket turns around the second end, and moves away from the operation platform or falls back in a direction towards the operation platform; wherein, the hydraulic power device further comprises an oil cylinder, a hydraulic power unit, and a hydraulic oil pipe connected between the oil cylinder and the hydraulic power unit; the hydraulic power unit provides power for the oil cylinder; the oil cylinder is further connected to the piston rod; wherein, the electric mini push cart further comprises an assembly box, the assembly box is suspended from the cart frame and below the bucket, the assembly box includes a first receiving portion; the hydraulic power unit is accommodated in the first receiving portion; wherein the assembly box further comprises two second receiving portions located on both sides of the first receiving portion; each of the two second receiving portions is configured to place a battery pack.
19. 19 . The electric mini push cart according to claim 18 , wherein the cart frame includes a front fender, and two symmetrical longitudinal beams, the front fender is located opposite to the operation platform, and the front fender are respectively connected end to end with two longitudinal beams to form the cart frame, and the assembly box is suspended under the two longitudinal beams.

Description

CROSS REFERENCE TO RELATED APPLICATION This non-provisional patent application claims priority under 35 U. S. C. § 119 from Chinese Patent Applications No. 202221499594.1, 202221460133.3 both filed on Jun. 13, 2022, Chinese Patent Applications No. 202221497217.4, No. 202221497182.4, No. 202221497297.3, No. 2022214601140 filed on Jun. 16, 2022, the entire content of which is incorporated herein by reference. TECHNICAL FIELD The disclosure relates to vehicles, in particular to an electric mini push cart. BACKGROUND Due to small size, electric mini push carts are adapted in small spaces. Therefore, the electric mini push carts have great advantages in some items that objects with little weight and small volume are need to quickly transfer. For example, sand and gravel handling in family buildings, grain handling in rural areas, etc., and the electric mini push carts are widely used. Existing electric mini push carts mainly include handcarts, small trailers, electric tricycles and the like. However, the existing electric mini push carts often load and unload of the objects manually, which is inconvenient to use. There fore, there is a room for improving the electric mini push carts. SUMMARY An electric mini push cart provided includes a cart frame, an operation platform, a bucket, and a hydraulic power device. The operation platform arranged on the rear side. The bucket is configured to load objects and located on one side of the operation platform. The hydraulic power device drives the bucket to turn over, the hydraulic power device is installed on the cart frame and located below the bucket, the hydraulic power device includes a piston rod connected to the first end. When the hydraulic power device is working, the piston rod is stretched or retracted to push or pull back the first end, so that the bucket turns around the second end, and move away from the operation platform or falls back towards the operation platform. The above-mentioned small electric mini push cart is provided with a hydraulic power device, which can drive the hydraulic power device to turn over the bucket for loading and unloading, effectively realizing the small truck with electric dump, saving time and effort, and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort. FIG. 1 is a perspective view of an electric mini push cart in accordance with a first embodiment. FIG. 2 is another perspective view of the electric mini push cart shown in FIG. 1. FIG. 3 is another perspective view of the electric mini push cart shown in FIG. 1. FIG. 4 is a perspective view of the hydraulic power device of the electric mini push cart shown in FIG. 1. FIG. 5 is a top view of the hydraulic power unit shown in FIG. 4. FIG. 6 is a schematic diagram of an assembled state of the cart frame and the wheel assembly of the electric mini push cart shown in FIG. 1. FIG. 7 is a schematic diagram of another assembled state of the cart frame and the wheel assembly shown in FIG. 1. FIG. 8 is a perspective view of a bucket of the electric mini push cart shown in FIG. 6. FIG. 9 is another perspective view of the bucket shown in FIG. 8. FIG. 10 is a perspective view of the operation platform of the electric mini push cart shown in FIG. 1. FIG. 11 is another perspective view of the operation platform shown in FIG. 10. FIG. 12 is another perspective view of the electric mini push cart shown in FIG. 1. FIG. 13 is another perspective view of the electric mini push cart shown in FIG. 1. FIG. 14 is a perspective view of the driven wheel assembly of the wheel assembly shown in FIG. 7. FIG. 15 is another perspective view of the driven wheel assembly shown in FIG. 12. FIG. 16 is another perspective view of the driven wheel assembly shown in FIG. 12. FIG. 17 is another perspective view of the electric mini push cart shown in FIG. 1. FIG. 18 is a schematic diagram of a main lighting assembly of the electric mini push cart shown in FIG. 1. FIG. 19 is a schematic view from another angle of the main lighting assembly shown in FIG. 14. FIG. 20 is another perspective view of the electric mini push cart in FIG. 1. FIG. 21 is a partially enlarged view of the wheel assembly shown in FIG. 1. FIG. 22 is a perspective view of the electric mini push cart in accordance with a second embodiment. FIG. 23 is a perspective view of the electric mini push cart in accordance with a third embodiment. The realization, functional features and advantages of the present application will be further de