CN112174048B - Double-layer forklift based on double four-bar linkage mechanism - Google Patents
Double-layer forklift based on double four-bar linkage mechanism Download PDFInfo
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- CN112174048B CN112174048B CN202011134978.9A CN202011134978A CN112174048B CN 112174048 B CN112174048 B CN 112174048B CN 202011134978 A CN202011134978 A CN 202011134978A CN 112174048 B CN112174048 B CN 112174048B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07504—Accessories, e.g. for towing, charging, locking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/24—Electrical devices or systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to a double-layer forklift based on a double four-bar mechanism, which comprises a chassis, a linear driving device arranged on the chassis, a lower layer lifting swing frame and an upper layer lifting swing frame, wherein two pairs of bilaterally symmetrical travelling wheels are arranged on two sides of the chassis, two vertical symmetrical upright posts are fixed at the rear end of the chassis, a bilaterally symmetrical upright plate is fixed at the outer side of each upright post, the lower end of a fixed rod of the linear driving device is hinged on a first connecting seat fixed with the chassis, the upper layer lifting swing frame is arranged on the upright plate and driven to swing up and down by the expansion and contraction of the linear driving device so as to complete the lifting action, the linear driving device can swing at a certain angle simultaneously in the expansion and contraction process, the lower layer lifting swing frame is driven to simultaneously complete the lifting action in the swinging process, one power device drives two sets of lifting swing frames to work, and double workload is completed by single operation, high working efficiency, convenient use and simple operation.
Description
Technical Field
The invention relates to the technical field of forklifts, in particular to a double-layer forklift based on a double four-bar linkage mechanism.
Background
The forklift is a hand-push type forklift at first birth, the self-push type forklift does not appear until the early twentieth century, the self-push type forklift is used for quickly replacing the hand-push type forklift, the forklift is various wheel type carrying vehicles for carrying out loading, stacking, short-distance transportation and heavy object carrying operation on finished pallet goods, the forklift belongs to material carrying machinery, is widely applied to various national economic departments such as stations, ports, airports, factories, warehouses and the like, is high-efficiency equipment for mechanical loading, stacking and short-distance transportation, is very widely applied, and is required to be used by both mechanical manufacturing enterprises and food processing and feed processing enterprises, has very large function, can quickly transfer heavier objects, can greatly save manpower, can greatly improve the working efficiency, and is safe and reliable at the same time, the carrying capacity is large, and the traditional forklift can meet the requirement of transferring large-quality goods, meanwhile, the requirement of a cargo loading and unloading vehicle with a certain height can be met; however, the forklift in the prior art is usually a single-layer forklift, the capacity of carrying goods at a time is limited, particularly for container goods with regular shapes and large quantities, the stacking of the goods has stronger regularity, and the requirement on the carrying rate or the single carrying capacity of the forklift is higher, so that the single-layer forklift in the prior art obviously cannot meet the requirement of actual production, and necessary innovation and improvement are urgently needed.
Disclosure of Invention
In order to solve the problems, the invention provides a double-layer forklift based on a double four-bar linkage mechanism.
The specific contents are as follows: double-deck fork truck based on two four-bar linkage, including the chassis, install sharp drive arrangement, the lower floor on the chassis and lift the rocker, the upper strata of lifting the rocker, characterized by:
two pairs of left-right symmetrical walking wheels are mounted on two sides of the underframe, two vertical symmetrical stand columns are fixed at the rear end of the underframe, a left-right symmetrical vertical plate is fixed on the outer side of each stand column, the linear driving device comprises a fixed rod and a telescopic rod, the lower end of the fixed rod of the linear driving device is hinged to a first connecting seat fixed with the underframe, and the linear driving device freely swings back and forth in the vertical plane;
the lower layer lifting swing frame comprises two pairs of lower layer fork legs which are arranged in bilateral symmetry and a connecting rod mechanism which is hinged on the lower layer fork legs, the lower layer fork legs are horizontally arranged, the rear ends of the lower layer fork legs are fixed on a horizontal cross rod, two ends of the cross rod are hinged with connecting rods with the same size, two free ends of the two connecting rods are respectively hinged on a horizontal first cross shaft and a horizontal second cross shaft, the cross rod and the two connecting rods form a parallelogram four-rod mechanism, the first cross shaft is fixed on a second connecting seat which is fixed with the underframe, the second cross shaft is fixed on a third connecting seat which is fixed with the underframe, the first connecting seat, the second connecting seat and the third connecting seat are sequentially distributed in a straight line, two actuating rods which are symmetrical in bilateral symmetry are hinged on a fixed rod of the straight line driving device, and two free ends of the two actuating rods are respectively hinged with the two closest connecting rods;
the upper layer lifting swing frame comprises two pairs of upper layer fork legs which are arranged in bilateral symmetry and a connecting rod mechanism hinged on the upper layer fork legs, the upper layer fork legs are horizontally arranged and correspond to the lower layer fork legs in the vertical direction, the rear ends of the upper layer fork legs are fixed on connecting arms, the upper ends of the connecting arms are hinged on a third cross shaft, the third cross shaft is horizontally fixed at the outer ends of lifting beams, the inner ends of the lifting beams are hinged on a fourth cross shaft parallel to the third cross shaft, the two ends of the fourth cross shaft are respectively and vertically fixed on the inner sides of two vertical plates, the lower ends of the connecting arms are hinged with long swing arms, the free ends of the long swing arms are hinged on the vertical plates on the corresponding sides, the long swing arms, the lifting beams and the connecting arms form a parallelogram four-rod mechanism, and the free ends of telescopic rods of the linear driving devices are hinged on the lifting beams.
Preferably, the traveling wheels are Mecanum wheels, each Mecanum wheel is coaxially fixed on an output shaft of a corresponding driving motor, and the driving motors are correspondingly fixed on the bottom frame.
Preferably, the linear driving device is an electric push rod or a hydraulic cylinder.
Preferably, symmetrical operating handles are fixed on the outer side surfaces of the vertical plates.
Preferably, both ends of the long swing arm are connected with hinged joints through threads, and the long swing arm is hinged with the vertical plate and the connecting arm through the hinged joints at both ends respectively.
Preferably, a fourth connecting seat and a fifth connecting seat are respectively fixed at two ends of the lifting beam, and a third cross shaft and a fourth cross shaft are respectively fixed on the fourth connecting seat and the fifth connecting seat.
Preferably, the lifting beam is sleeved with a fixed seat capable of freely sliding along the axial direction of the lifting beam, the fixed seat is hinged with the free end of the telescopic rod of the linear driving device, and the fixed seat is fixed on the lifting beam through a bolt.
The invention has the beneficial technical effects that: the invention relates to a double-layer forklift based on a double four-bar mechanism, which comprises a bottom frame, a linear driving device arranged on the bottom frame, a lower layer lifting swing frame and an upper layer lifting swing frame, wherein the upper layer lifting swing frame is driven to swing up and down through the expansion and contraction of the linear driving device so as to drive upper layer fork legs to finish the action of lifting cargos, the linear driving device can simultaneously swing at a certain angle in the expansion and contraction process, and drive the lower layer lifting swing frame to swing in the swinging process so as to simultaneously drive the lower layer fork legs to finish the action of lifting cargos, one set of power device can simultaneously drive two sets of lifting swing frames to simultaneously work, the swinging directions of the upper layer fork legs and the lower layer fork legs are consistent and synchronous, and no additional power device is needed to be added so that twice of workload can be finished in a single operation. High working efficiency and convenient application and popularization.
Drawings
Fig. 1 is a schematic perspective view of a double-layer forklift based on a double four-bar linkage;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a right side view of FIG. 3;
FIG. 5 is a schematic perspective view of a lower lifting frame;
in the figure: 11. the lifting device comprises an underframe, 12 driving motors, 13 travelling wheels, 14 upright posts, 15 vertical plates, 16 first connecting seats, 17 second connecting seats, 18 third connecting seats, 19 transverse rods, 20 lower-layer fork legs, 21 second transverse shafts, 22 driving rods, 23 fixing rods of a linear driving device, 24 telescopic rods of the linear driving device, 25 long swing arms, 26 hinged joints, 27 connecting arms, 28 upper-layer fork legs, 29 third transverse shafts, 30 fourth connecting seats, 31 lifting beams, 32 fixing seats, 33 fifth connecting seats, 34 operating handles, 35 fourth transverse shafts, 36 bolts, 37 connecting rods and 38 first transverse shafts.
Detailed Description
In the first embodiment, referring to fig. 1 to 5, a double-layer forklift based on a double four-bar linkage comprises a base frame, a linear driving device installed on the base frame, a lower layer lifting swing frame and an upper layer lifting swing frame;
two pairs of left-right symmetrical walking wheels are mounted on two sides of the underframe, two vertical symmetrical stand columns are fixed at the rear end of the underframe, a left-right symmetrical vertical plate is fixed on the outer side of each stand column, the linear driving device comprises a fixed rod and a telescopic rod, the lower end of the fixed rod of the linear driving device is hinged to a first connecting seat fixed with the underframe, and the linear driving device freely swings back and forth in the vertical plane; the linear driving device is an electric push rod or a hydraulic cylinder.
The lower layer lifting swing frame comprises two pairs of lower layer fork legs which are arranged in a bilateral symmetry mode and a connecting rod mechanism hinged on the lower layer fork legs, the lower layer fork legs are horizontally arranged, the rear ends of the lower layer fork legs are fixed on a horizontal cross rod, two ends of the cross rod are hinged with connecting rods with the same size, two free ends of the two connecting rods are respectively hinged on a first horizontal shaft and a second horizontal shaft which are horizontal, the cross rod and the two connecting rods form a parallelogram four-rod mechanism, the lower layer fork legs can be guaranteed to be always kept horizontal in the swinging process, the lower layer fork legs can stably lift and transfer goods, the first horizontal shaft is fixed on a second connecting seat fixed with the underframe, the second horizontal shaft is fixed on a third connecting seat fixed with the underframe, the first connecting seat, the second connecting seat and the third connecting seat are sequentially distributed in a straight line, and two drive rods which are symmetrical left and right are hinged on a fixed rod of the straight line drive device, two free ends of the two driving rods are respectively hinged with the two nearest connecting rods;
the upper layer lifting swing frame comprises two pairs of upper layer fork legs which are arranged in bilateral symmetry and a connecting rod mechanism which is hinged on the upper layer fork legs, the upper layer fork legs are horizontally arranged and vertically correspond to the lower layer fork legs, the rear ends of the upper layer fork legs are fixed on a connecting arm, the upper end of the connecting arm is hinged on a third cross shaft, the third cross shaft is horizontally fixed at the outer end of the lifting beam, the inner end of the lifting beam is hinged on a fourth cross shaft parallel to the third cross shaft, the two ends of the fourth cross shaft are respectively and vertically fixed at the inner sides of the two vertical plates, the lower end of the connecting arm is hinged with a long swing arm, the free end of the long swing arm is hinged on the vertical plate at the corresponding side, and the long swing arm, the lifting beam and the connecting arm form a parallelogram four-bar mechanism, so that the upper fork leg can be always kept horizontal in the swinging process, the upper fork leg can be stably lifted and transferred, and the free end of the telescopic rod of the linear driving device is hinged on the lifting beam.
The walking wheels are Mecanum wheels, each Mecanum wheel is coaxially fixed on an output shaft of a driving motor corresponding to the Mecanum wheel, and the driving motors are correspondingly fixed on the bottom frame. The Mecanum wheel has compact structure and flexible motion, and can realize the function of all-directional movement more flexibly and conveniently.
And symmetrical operating handles are fixed on the outer side surfaces of the vertical plates. The hand can be conveniently gripped, and the operation and control of the whole forklift are convenient.
The two ends of the long swing arm are both connected with hinged joints through threads, and the long swing arm is hinged with the vertical plate and the connecting arm through the hinged joints at the two ends respectively. The long swing arm is connected with a hinged joint so as to be convenient for installation and disassembly.
The two ends of the lifting beam are respectively fixed with a fourth connecting seat and a fifth connecting seat, and a third cross shaft and a fourth cross shaft are respectively fixed on the fourth connecting seat and the fifth connecting seat.
The lifting beam is sleeved with a fixed seat which can freely slide along the axial direction of the lifting beam, the fixed seat is hinged with the free end of the telescopic rod of the linear driving device, and the fixed seat is fixed on the lifting beam through a bolt. The fixing base can be on lifting the roof beam adjustment position, conveniently adjusts the action point of linear drive device on lifting the roof beam, and then conveniently adjusts the range of lifting and the height of upper fork foot and lower floor's fork foot, facilitates the use.
The working process and principle of the invention are as follows:
the invention relates to a double-layer forklift based on a double four-bar mechanism, which drives a lifting beam to swing up and down through the expansion process of a linear driving device so as to drive an upper layer fork leg to finish the action of lifting cargos, the linear driving device can swing at a certain angle in the expansion process, a driving rod drives a connecting rod to swing in the swinging process, and the connecting rod drives a lower layer fork leg to swing on the upper layer through a cross rod so as to enable the lower layer fork leg to finish the action of lifting cargos simultaneously, the swinging directions of the upper layer fork leg and the lower layer fork leg are consistent and synchronous, one set of power device can drive the two layers of fork legs to work simultaneously, and double working amount can be finished in one operation without adding an additional power device.
Claims (7)
1. Double-deck fork truck based on two four-bar linkage, including the chassis, install sharp drive arrangement, the lower floor on the chassis and lift the rocker, the upper strata of lifting the rocker, characterized by:
two pairs of left-right symmetrical walking wheels are mounted on two sides of the underframe, two vertical symmetrical stand columns are fixed at the rear end of the underframe, a left-right symmetrical vertical plate is fixed on the outer side of each stand column, the linear driving device comprises a fixed rod and a telescopic rod, the lower end of the fixed rod of the linear driving device is hinged to a first connecting seat fixed with the underframe, and the linear driving device freely swings back and forth in the vertical plane;
the lower layer lifting swing frame comprises two pairs of lower layer fork legs which are arranged in bilateral symmetry and a connecting rod mechanism which is hinged on the lower layer fork legs, the lower layer fork legs are horizontally arranged, the rear ends of the lower layer fork legs are fixed on a horizontal cross rod, two ends of the cross rod are hinged with connecting rods with the same size, two free ends of the two connecting rods are respectively hinged on a horizontal first cross shaft and a horizontal second cross shaft, the cross rod and the two connecting rods form a parallelogram four-rod mechanism, the first cross shaft is fixed on a second connecting seat which is fixed with the underframe, the second cross shaft is fixed on a third connecting seat which is fixed with the underframe, the first connecting seat, the second connecting seat and the third connecting seat are sequentially distributed in a straight line, two actuating rods which are symmetrical in bilateral symmetry are hinged on a fixed rod of the straight line driving device, and two free ends of the two actuating rods are respectively hinged with the two closest connecting rods;
the upper layer lifting swing frame comprises two pairs of upper layer fork legs which are arranged in bilateral symmetry and a connecting rod mechanism hinged on the upper layer fork legs, the upper layer fork legs are horizontally arranged and correspond to the lower layer fork legs in the vertical direction, the rear ends of the upper layer fork legs are fixed on connecting arms, the upper ends of the connecting arms are hinged on a third cross shaft, the third cross shaft is horizontally fixed at the outer ends of lifting beams, the inner ends of the lifting beams are hinged on a fourth cross shaft parallel to the third cross shaft, the two ends of the fourth cross shaft are respectively and vertically fixed on the inner sides of two vertical plates, the lower ends of the connecting arms are hinged with long swing arms, the free ends of the long swing arms are hinged on the vertical plates on the corresponding sides, the long swing arms, the lifting beams and the connecting arms form a parallelogram four-rod mechanism, and the free ends of telescopic rods of the linear driving devices are hinged on the lifting beams.
2. The double lift truck of claim 1, wherein: the walking wheels are Mecanum wheels, each Mecanum wheel is coaxially fixed on an output shaft of a driving motor corresponding to the Mecanum wheel, and the driving motors are correspondingly fixed on the bottom frame.
3. The double lift truck of claim 1, wherein: the linear driving device is an electric push rod or a hydraulic cylinder.
4. The double lift truck of claim 1, wherein: and symmetrical operating handles are fixed on the outer side surfaces of the vertical plates.
5. The double lift truck of claim 1, wherein: the two ends of the long swing arm are both connected with hinged joints through threads, and the long swing arm is hinged with the vertical plate and the connecting arm through the hinged joints at the two ends respectively.
6. The double lift truck of claim 1, wherein: the two ends of the lifting beam are respectively fixed with a fourth connecting seat and a fifth connecting seat, and a third cross shaft and a fourth cross shaft are respectively fixed on the fourth connecting seat and the fifth connecting seat.
7. The double lift truck of claim 1, wherein: the lifting beam is sleeved with a fixed seat which can freely slide along the axial direction of the lifting beam, the fixed seat is hinged with the free end of the telescopic rod of the linear driving device, and the fixed seat is fixed on the lifting beam through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134978.9A CN112174048B (en) | 2020-10-22 | 2020-10-22 | Double-layer forklift based on double four-bar linkage mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011134978.9A CN112174048B (en) | 2020-10-22 | 2020-10-22 | Double-layer forklift based on double four-bar linkage mechanism |
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| CN112174048A CN112174048A (en) | 2021-01-05 |
| CN112174048B true CN112174048B (en) | 2021-10-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112723251A (en) * | 2021-04-02 | 2021-04-30 | 山东工力机械有限公司 | Vehicle-mounted cargo handling forklift |
| CN112917420B (en) * | 2021-04-25 | 2022-06-17 | 深圳市高捷力科技有限公司 | Fork truck semi-axis assembly jig |
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Effective date of registration: 20221230 Address after: 450000 No. 4, North District of Wuzhou Fine Ceramics City, No. 33, Shangdu Road, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: HENAN AOLANSITE NEW ENERGY TECHNOLOGY CO.,LTD. Address before: No. 36 North Ring Road, Jinshui District, Zhengzhou City, Henan Province, Henan Patentee before: NORTH CHINA University OF WATER RESOURCES AND ELECTRIC POWER |
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