Novel portable four-corner lift truck for loading and unloading containers
By designing a new lightweight four-angle lift truck, four independent lift trucks are used to operate simultaneously, the operation difficulty and land occupation of existing container loading and unloading equipment under limited site conditions is solved, and efficient and safe container unloading and transfer effects are achieved.
Patent Information
- Application Number
- CN202421806264.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-29
AI Technical Summary
Existing container loading and unloading equipment such as forklifts, cranes and cranes have problems such as high operational difficulties, high risk factors, and large area, making it difficult to efficiently unload and transfer trucks in factories or docks with limited sites.
A new lightweight four-angle lift truck is designed to lift or lower the container from the four corners of the container through four independent lift trucks simultaneously to realize unloading or container transfer trucks. Each lift car includes a frame, wheel, electric cylinder lifting parts and driving parts, and is equipped with battery power. The electric cylinder lifting parts realize the lifting of the container through the electric cylinder, the main support arm, the upper support arm and the lower support arm.
It realizes efficient unloading and container transfers under limited sites, reducing operational difficulty and danger, reducing floor area, able to deal with ramp unloading, and avoiding the problem of easy deformation between two forklifts lifting from both sides of the container.
Smart Images
Figure CN223014621U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of container handling, and in particular relates to a new type of portable four-corner lifting vehicle for loading and unloading containers. Background Art
[0002] Existing containers are transported by container transport vehicles, and the equipment used for loading and unloading containers includes forklifts, cranes or hoists. Among them, forklifts lift containers from both ends, with relatively high operation difficulty and danger coefficient; cranes are usually used outdoors and occupy a large area; rail-mounted container gantry cranes are used in container terminals, mainly for container loading, unloading, handling and stacking in container railway transfer yards and large container storage yards, which occupy a large area and are restricted by the site. Summary of the Utility Model
[0003] In view of this, the utility model aims to provide a new type of portable four-corner lifting vehicle for loading and unloading containers, which is suitable for container loading and unloading, can unload goods in factories or docks with limited space, and realizes container unloading and transfer.
[0004] To achieve the above object, the technical solution of the utility model is realized as follows:
[0005] A new type of portable four-corner lifting vehicle for loading and unloading containers includes four independent lifting vehicles. Each lifting vehicle includes a frame, wheels, wheel brakes, electric cylinder lifting components, a driving component and a battery; wheels are arranged at the bottom of the frame, and wheel brakes are arranged on the wheels; electric cylinder lifting components and a driving component are arranged on the frame, and the driving component is used to move the lifting vehicle; the battery is connected to the electric cylinder lifting components to supply power to the electric cylinder lifting components;
[0006] The electric cylinder lifting components include an electric cylinder, a main support arm, an upper support arm, a lower support arm and assembly bolts. The main support arm and the upper support arm are arranged vertically. The electric cylinder is connected to the main support arm to drive the main support arm to reciprocate vertically. The outer side wall of the main support arm constitutes a first working surface that abuts against the outer side wall of the container; the upper support arm and the lower support arm are symmetrically arranged on the upper and lower parts of the main support arm respectively. The outer side walls of the upper support arm and the lower support arm constitute a second working surface that abuts against the outer side wall of the container. The second working surface and the first working surface are in the same vertical plane. The upper support arm and the lower support arm are respectively provided with a linear assembly bolt, and a rotating locking head is arranged at the front end of the assembly bolt. The rotating locking head extends outside the second working surface (14) and is respectively arranged corresponding to the linear assembly grooves opened on the upper and lower parts of the container.
[0007] Degree-of-freedom adjustment devices are respectively arranged on the upper support arm and the lower support arm. The degree-of-freedom adjustment device includes a rotating shaft bracket, an adjustment rotating shaft and a triangular rib plate. The rotating shaft bracket is fixedly connected to the support arm. The adjustment rotating shaft is horizontally installed on the rotating shaft bracket to form a rotational connection. The adjustment rotating shaft is connected to the upper support arm and the lower support arm. The adjustment rotating shaft and the upper support arm are connected by the triangular rib plate.
[0008] Furthermore, a upper locking device is arranged at the rear part of the assembly bolt of the upper support arm. The upper locking device includes a bracket, an upper rotating shaft, an adjustment disc, a rotating rod and a pull rope. The bracket is located at the upper end of the rib plate and is fixedly connected to the upper support arm. The upper rotating shaft is installed on the bracket to form a rotational connection. One end of the upper rotating shaft is connected to the assembly bolt, and the other end is fixedly sleeved with the adjustment disc. The middle part of the adjustment disc is connected to the rotating rod, and both ends of the rotating rod are connected to the pull rope.
[0009] Furthermore, a lower locking device is arranged at the rear part of the assembly bolt of the lower support arm. The lower locking device includes a lower rotating shaft, a rotating handle and a handle buckle. The lower rotating shaft penetrates through the lower support arm. One end of the lower rotating shaft is connected to the assembly bolt, and the other end is connected to the rotating handle. The handle buckle includes a U-shaped buckle ring, and the U-shaped buckle ring is arranged in cooperation with the rotating handle.
[0010] Furthermore, the vehicle wheels include two wheels which are arranged side by side. A balance support foot is arranged between the two wheels. The balance support foot is rotationally connected to the bottom of the vehicle frame through a rotating shaft.
[0011] Furthermore, a load-bearing plate is installed at the lower part of the balance support foot. The load-bearing plate is placed on the ground, and its area is larger than that of the balance support foot. The upper surface of the load-bearing plate abuts against the balance support foot.
[0012] Furthermore, the driving component includes a push rod, a steering gear and a transmission component. The push rod is connected to the wheel axle of the vehicle wheel through the steering gear and the transmission component. The push rod is located on the opposite side of the electric cylinder lifting component and is inclined outward of the lifting vehicle.
[0013] Furthermore, the driving component further includes an assist motor which drives the vehicle wheels to rotate.
[0014] Furthermore, the driving component further includes a single-chip microcomputer controller and a remote controller. The remote controller establishes interaction with the single-chip microcomputer controller. The signal output end of the single-chip microcomputer controller is connected to the assist motor.
[0015] Furthermore, an electric control box is further included. The electric control box is arranged on the vehicle frame, and the battery is installed in the electric control box.
[0016] Compared with the prior art, the novel lightweight four-corner lifting vehicle for loading and unloading containers of the present utility model has the following advantages:
[0017] The portable four-corner lifting vehicle described in the present utility model realizes unloading or container transfer vehicle by synchronously lifting or lowering four mutually independent lifting vehicles from the four corners of the container. After the container is lifted, the container transport vehicle can drive away; the four lifting vehicles are mutually independent and easy to operate; the four mutually independent lifting vehicles can move separately, reducing the floor area and being able to handle ramp unloading; it can unload goods in the case of no container crane and limited site, and solve the problem that the middle part is prone to deformation when two forklifts lift from both sides of the container. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0019] Figure 1 is a diagram of the use state of the four-corner lifting vehicle described in the embodiment of the present utility model;
[0020] Figure 2 is a schematic diagram of the overall structure of the four-corner lifting vehicle described in the embodiment of the present utility model;
[0021] Figure 3 is a schematic diagram of the upper support arm and its connection structure described in the embodiment of the present utility model;
[0022] Figure 4 is a schematic diagram of the side structure of the four-corner lifting vehicle described in the embodiment of the present utility model;
[0023] Figure 5 is a schematic diagram of the assembly of the four-corner lifting vehicle and the container described in the embodiment of the present utility model;
[0024] Figure 6 is a schematic diagram of the lower support arm and its connection structure described in the embodiment of the present utility model.
[0025] Description of the reference numerals in the drawings:
[0026] 1 - Lifting vehicle; 2 - Container; 10 - Electric cylinder; 11 - Electric control box; 12 - One-word assembly bolt; 13 - Upper support arm; 14 - Second working surface; 15 - Main support arm; 16 - First working surface; 17 - Frame; 18 - Lower support arm; 19 - Lower rotating shaft; 20 - Rotating handle; 21 - Handle buckle; 22 - Rotating locking head; 23 - Steering gear; 24 - Transmission component; 25 - Wheel brake; 26 - Wheel; 27 - Single-chip microcomputer controller; 28 - Push rod; 29 - Boosting motor; 30 - Degree-of-freedom adjustment device; 31 - Upper rotating shaft; 32 - Adjusting disc; 33 - Rib plate; 34 - Rotating shaft bracket; 35 - Adjusting rotating shaft; 36 - Rotating rod; 37 - First rotating shaft bracket; 38 - Pulling rope; 40 - Load-bearing plate; 41 - Balanced support foot; 42 - Rotating shaft; 43 - One-word assembly groove. Specific embodiments
[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.
[0028] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0029] As Figure 1 、 Figure 2 、 Figure 5 shown, a new type of portable four - corner lifting vehicle for loading and unloading containers includes four independent lifting vehicles 1. Each lifting vehicle 1 includes a vehicle frame 17, wheels 26, wheel brakes 25, an electric cylinder lifting component, a driving component, and a battery. Wheels 26 are provided at the bottom of the vehicle frame 17, and wheel brakes 25 are provided on the wheels 26. An electric cylinder lifting component and a driving component are provided on the vehicle frame 17. The driving component is used to move the lifting vehicle 1. The battery is connected to the electric cylinder lifting component to supply power to the electric cylinder lifting component.
[0030] The electric cylinder lifting component includes an electric cylinder 10, a main support arm 15, an upper support arm 13, a lower support arm 18, and a fitting bolt 12. The main support arm 15 and the upper support arm 13 are arranged vertically. The electric cylinder 10 is connected to the main support arm 15 to drive the main support arm 15 to reciprocate vertically. The outer side wall of the main support arm 15 constitutes a first working surface 16 that abuts against the outer side wall of the container 2. Upper support arms 13 and lower support arms 18 are symmetrically arranged on the upper and lower parts of the main support arm 15 respectively. The outer side walls of the upper support arms 13 and the lower support arms 18 constitute a second working surface 14 that abuts against the outer side wall of the container 2. The second working surface 14 and the first working surface 16 are in the same vertical plane. One - shaped fitting bolts 12 are provided on the upper support arms 13 and the lower support arms 18 respectively. A rotating locking head 22 is provided at the front end of the fitting bolt 12. The rotating locking head 22 extends outside the second working surface 14 and is correspondingly arranged with one - shaped fitting grooves 43 opened on the upper and lower parts of the container 2 respectively.
[0031] Among them, the one - shaped fitting bolt 12 and the one - shaped fitting groove 43 form a detachable fit. Rotating the one - shaped fitting bolt 12 drives the rotating locking head 22 to rotate. After inserting into the fitting groove 43, rotate the one - shaped fitting bolt 12, and the locking head 22 is stuck in the fitting groove 43 for fixed locking.
[0032] Among them, preferably in the embodiments of the present utility model, the wheel brake adopts a manual structure. By manually pulling the brake wrench, the brake disc is brought into contact with the wheel disc to achieve braking. The electric cylinder adopts a ball screw pair transmission design. The linear lifting movement of the load is realized through servo - motor drive and gear - train transmission, and the rated dynamic load is 12t.
[0033] A new type of portable four-corner lifting vehicle for loading and unloading containers, suitable for unloading or container transfer in factories or docks with limited space, and capable of handling ramp unloading. When unloading, first move the four lifting vehicles to the four corners of the container respectively, and abut the main support arms 15, upper support arms 13, and lower support arms 18 of the four lifting vehicles against the side wall of the container. Insert the one-piece assembly bolt 12 into the one-piece assembly groove 43 and rotate to lock and fix it. Start the wheel brake 25 to fix the wheels. Then, synchronously start the electric cylinders of the four lifting vehicles to drive the main support arms 15, upper support arms 13, and lower support arms 18 to lift the container, and the container transport vehicle can drive away. After lifting the container, container transfer or in-situ unloading to the ground can be carried out.
[0034] When transferring the container, the container transport vehicle drives to the corresponding position for receiving the container, and the electric cylinders of the four lifting vehicles are synchronously started to lower and place on the container transport vehicle. When unloading in-situ, the electric cylinders of the four lifting vehicles are synchronously started to lower and place on the ground. The four lifting vehicles are independent of each other and easy to operate; they can be moved separately to reduce the occupied area and are capable of handling ramp unloading; by moving the four lifting vehicles to the four corners of the container respectively and synchronously starting the electric cylinders of the four lifting vehicles to lift the container, unloading can be carried out without a container crane and in a limited space.
[0035] As Figure 3 shown, freedom adjustment devices are respectively arranged on the upper support arm 13 and the lower support arm 18. The freedom adjustment device includes a rotating shaft bracket 34, an adjustment rotating shaft 35, and a triangular rib plate 33. The rotating shaft bracket 34 is fixedly connected to the support arm 15. The adjustment rotating shaft 35 is horizontally assembled on the rotating shaft bracket 34 to form a rotating connection. The adjustment rotating shaft 35 is connected to the upper support arm 13 and the lower support arm 18, and the adjustment rotating shaft 35 is connected to the upper support arm 13 by the triangular rib plate 33. With the above structure, the upper support arm 13 and the lower support arm 18 can rotate around the adjustment rotating shaft 35, and the freedom adjustment device 30 provides a movement amount for the upper support arm 13, facilitating the insertion of the assembly bolt 12 into the assembly groove 43 of the container.
[0036] As Figure 3As shown, a upper locking device is provided at the rear of the assembly bolt 12 of the upper support arm 13. The upper locking device includes a bracket 37, an upper rotating shaft 31, an adjusting disc 32, a rotating rod 36 and a pulling rope 38. The bracket 37 is located at the upper end of the rib plate 33 and is fixedly connected to the upper support arm 13. The upper rotating shaft 31 is fitted on the bracket 37 to form a rotational connection. One end of the upper rotating shaft 31 is connected to the assembly bolt 12, and the other end is fixedly sleeved with the adjusting disc 32. The adjusting disc 32 is connected to the middle of the rotating rod 36, and both ends of the rotating rod 36 are connected to the pulling rope 38. The upper support arm 13 is located at a high position. For the convenience of operation, with the above structure, when the pulling rope 38 is pulled, the rotating rod 36 rotates, driving the adjusting disc 32 to rotate. When the long side of the locking head is parallel to the long side of the assembly groove 43, after the locking head is inserted into the assembly groove 43, the pulling rope 38 is pulled, and the rotating locking head is clamped in the flat groove to lock the assembly bolt.
[0037] As Figure 6 shown, a lower locking device is provided at the rear of the assembly bolt 12 of the lower support arm 18. The lower locking device includes a lower rotating shaft 19, a rotating handle 20 and a handle buckle 21. The lower rotating shaft 19 passes through the lower support arm 18. One end of the lower rotating shaft 19 is connected to the assembly bolt 12, and the other end is connected to the rotating handle 20. The handle buckle 21 includes a U-shaped buckle ring, and the U-shaped buckle ring is arranged in cooperation with the rotating handle 20. With the above structure, when the straight-shaped assembly bolt 12 is rotated to drive the rotating locking head 22 to rotate, after it is inserted into the assembly groove 43, the straight-shaped assembly bolt 12 is rotated, and the locking head 22 is clamped in the assembly groove 43 for fixed locking. Then the handle buckle 21 is rotated downward so that the rotating handle 20 is inserted into the U-shaped buckle ring to fix the rotating handle 20.
[0038] As Figure 4 shown, there are two wheels 26. The two wheels 26 are arranged side by side. A balance support foot 41 is arranged between the two wheels 26. The balance support foot 41 is rotatably connected to the bottom of the vehicle frame 17 through a rotating shaft 42. Among them, by setting two wheels, the vehicle body is lighter; through the balance support feet, the vehicle body is stabilized, and the vehicle body is more stable when lifting the container.
[0039] As Figure 4 、 Figure 5 shown, a load-bearing plate 40 is fitted at the lower part of the balance support foot 41. The load-bearing plate 40 is placed on the ground, and its area is larger than that of the balance support foot 41. The upper surface of the load-bearing plate 40 abuts against the balance support foot 41. Among them, the load-bearing plate 40 is arranged under the balance support foot 41. The load-bearing plate 40 expands the pressure-bearing area, can broaden the pressure surface, reduce the concentrated pressure, and reduce the damage to the ground.
[0040] As Figure 2As shown in the figure, the driving component includes a push rod 28, a steering gear 23, and a transmission component 24. The push rod 28 is connected to the axle of the wheel 26 through the steering gear 23 and the transmission component 24. The push rod 28 is located on the opposite side of the electric cylinder lifting component and is inclined outward of the lifting vehicle 1. Among them, the push rod 28 is located on the opposite side of the electric cylinder lifting component, with a reasonable layout to balance the vehicle body. When moving the lifting vehicle at a short distance, the push rod can be pushed by hand to drive the wheel 26 to rotate to realize the movement of the vehicle body. When the push rod 28 is rotated, the lifting vehicle can be steered through the steering gear 23.
[0041] As Figure 2 shown in the figure, the driving component further includes an assisting motor 29, and the assisting motor 29 drives the wheel 26 to rotate. Preferably, the assisting motor 29 is connected to the axle of the wheel 26 to drive the wheel 26 to rotate. The driving component further includes a single-chip microcomputer controller 27 and a remote controller. The remote controller establishes an interaction with the single-chip microcomputer controller 27, and the signal output end of the single-chip microcomputer controller 27 is connected to the assisting motor 29. Among them, the assisting motor 29 can drive the wheel 26 to rotate, making driving more labor-saving. Preferably, remote control driving is realized by establishing an interaction between the controller and the single-chip microcomputer controller 27. More preferably, when moving at a long distance, the assisting motor 29 is used to drive the wheel to move, thereby driving the lifting vehicle to move. When steering, the steering handle is rotated manually to form a certain angle between the driving component and the lifting vehicle, so as to automatically realize the rotation of the lifting vehicle.
[0042] As Figure 2 、 Figure 5 shown in the figure, it further includes an electric control box 11. The electric control box 11 is arranged on the vehicle frame 17, and the battery is installed in the electric control box 11. Among them, a circuit board and electrical components are also arranged in the electric control box 11, and a charging interface for docking with the battery is arranged on the electric control box 11.
[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A new type of lightweight four-corner lift truck for loading and unloading containers, characterized by: The invention comprises four mutually independent lifting vehicles (1), each lifting vehicle (1) comprising a vehicle frame (17), wheels (26), wheel brakes (25), an electric cylinder lifting component, a driving component and a battery; the wheel (26) is arranged at the bottom of the vehicle frame (17), and the wheel (26) is arranged with a wheel brake (25); the electric cylinder lifting component and the driving component are arranged on the vehicle frame (17), and the driving component is used to move the lifting vehicle (1); the battery is connected to the electric cylinder lifting component to supply power to the electric cylinder lifting component; The electric cylinder lifting component comprises an electric cylinder (10), a main support arm (15), an upper support arm (13), a lower support arm (18) and an assembly bolt (12); the main support arm (15) and the upper support arm (13) are arranged in a vertical direction; the electric cylinder (10) is connected to the main support arm (15) to drive the main support arm (15) to reciprocate in the vertical direction; the outer side wall of the main support arm (15) forms a first working surface (16) abutting against the outer side wall of the container (2); the upper support arm (13) and the lower support arm (18) are symmetrically arranged at the upper and lower parts of the main support arm (15), respectively; the upper support arm (15) and the upper support arm (13) are symmetrically arranged at the lower part of the main support arm (15); the upper support arm (13) and the lower support arm (18) are symmetrically arranged at the upper and lower parts of the main support arm (15); ... The outer side walls of the support arm (13) and the lower support arm (18) form a second working surface (14) that abuts against the outer side wall of the container (2); the second working surface (14) and the first working surface (16) are in the same vertical plane; a straight-line assembly bolt (12) is provided on the upper support arm (13) and the lower support arm (18), respectively; a rotating locking head (22) is provided at the front end of the assembly bolt (12); the rotating locking head (22) extends to the outside of the second working surface (14) and is respectively arranged corresponding to the straight-line assembly grooves (43) provided on the upper and lower parts of the container (2).
2. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 1 is characterized in that: The upper support arm (13) and the lower support arm (18) are respectively provided with a degree of freedom adjustment device, the degree of freedom adjustment device comprising a rotating shaft bracket (34), an adjustment rotating shaft (35) and a triangular rib plate (33), the rotating shaft bracket (34) is fixedly connected to the support arm (15), the adjustment rotating shaft (35) is mounted on the rotating shaft bracket (34) in a horizontal direction to form a rotational connection, the adjustment rotating shaft (35) is connected to the upper support arm (13) and the lower support arm (18), and the adjustment rotating shaft (35) is connected to the upper support arm (13) by a triangular rib plate (33) provided thereon.
3. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 2 is characterized in that: An upper locking device is provided at the rear of the assembly bolt (12) of the upper support arm (13), and the upper locking device comprises a bracket (37), an upper rotating shaft (31), an adjusting disk (32), a rotating rod (36) and a pull rope (38). The bracket (37) is located at the upper end of the rib plate (33) and is fixedly connected to the upper support arm (13). The upper rotating shaft (31) is mounted on the bracket (37) to form a rotating connection. One end of the upper rotating shaft (31) is connected to the assembly bolt (12), and the other end is fixedly mounted on the adjusting disk (32). The adjusting disk (32) is connected to the middle of the rotating rod (36), and both ends of the rotating rod (36) are connected to the pull rope (38).
4. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 1 is characterized in that: A lower locking device is provided at the rear of the assembly bolt (12) of the lower support arm (18), the lower locking device comprising a lower rotating shaft (19), a rotating handle (20) and a handle buckle (21). The lower rotating shaft (19) passes through the lower support arm (18), one end of the lower rotating shaft (19) is connected to the assembly bolt (12), and the other end is connected to the rotating handle (20). The handle buckle (21) comprises a U-shaped buckle ring, and the U-shaped buckle ring is arranged in cooperation with the rotating handle (20).
5. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 1 is characterized in that: The wheels (26) include two wheels (26) which are arranged side by side with each other. A balancing support foot (41) is arranged between the two wheels (26). The balancing support foot (41) is rotatably connected to the bottom of the vehicle frame (17) via a rotating shaft (42).
6. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 5 is characterized in that: The lower part of the balancing support foot (41) is equipped with a load-bearing plate (40), which is placed on the ground and has an area larger than that of the balancing support foot (41). The upper surface of the load-bearing plate (40) abuts against the balancing support foot (41).
7. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 1 is characterized in that: The driving component comprises a push rod (28), a steering gear (23) and a transmission component (24); the push rod (28) is connected to the axle of the wheel (26) via the steering gear (23) and the transmission component (24); the push rod (28) is located on a side opposite to the electric cylinder lifting component and is arranged to be inclined toward the outside of the lifting vehicle (1).
8. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 7 is characterized in that: The driving component also includes a power-assisting motor (29), which drives the wheel (26) to rotate.
9. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 8 is characterized in that: The driving component further comprises a single-chip microcomputer controller (27) and a remote controller, the remote controller interacting with the single-chip microcomputer controller (27), and the signal output end of the single-chip microcomputer controller (27) is connected to the power assist motor (29).
10. The novel light-weight four-corner lift truck for loading and unloading containers according to claim 1 is characterized in that: It also includes an electric control box (11), which is arranged on the vehicle frame (17), and the battery is installed in the electric control box (11).