Plane two-freedom nine bar servo-drive face-up transporting hoist of container hoisting cranes
(1) technical field:
The utility model relates to port crane, particularly a kind of plane two-freedom nine bar servo-drive face-up transporting hoist of container hoisting cranes.
(2) background technology:
Face-up transporting hoist of container hoisting crane (also claiming container front crane) is a kind of important harbour machinery, has easy to operately, and stacking tier advantages of higher has been brought into play important effect in the operations such as all kinds of harbour container carryings, piling and transportation.As CN103332220A, CN101723256A, CN202322093U, CN2773035, the disclosed face-up transporting hoist of container hoisting crane of CN201890746U, be all to drive by combining of telescopic oil cylinder, pitching oil cylinder the task of finishing the work.
But the container front side hoisting crane of above-mentioned this quasi-tradition is pure hydraulic driven, its hydraulic efficiency pressure system exists that parts machining matching requirements are high, manufacture, maintenance, cost of upkeep are high, the not shortcoming such as length, leakage of oil of life-span.And the hoist mechanism of this quasi-tradition fisher's formula cascaded structure is because of the restriction of himself structure, exist the problems such as member heaviness, poor rigidity, inertia are large, joint error accumulation, dynamic performance is poor, is difficult to meet the high-speed overload job requirements of increasingly stringent.
(3) utility model content:
The purpose of this utility model is to provide a kind of plane two-freedom nine bar servo-drive face-up transporting hoist of container hoisting cranes, can better solve conventional hydraulic formula face-up transporting hoist of container hoisting crane process and assemble require high, maintaining cost is high, the not shortcoming such as length, leakage of oil of life-span.
Can realize the plane two-freedom nine bar servo-drive face-up transporting hoist of container hoisting cranes of above-mentioned purpose, comprise the arm, arm lifting mechanism and the hoisting arm expansion mechanism that arrange based on vehicle frame, described arm comprises swivel arm and telescopic boom unlike the prior art, described swivel arm lower end is hinged in vehicle frame middle part, described telescopic boom is installed on swivel arm by sliding pair, and telescopic boom front end arranges fixing device; Described hoisting arm expansion mechanism is located at arm front, be included in flexible rocking bar and shrinking connecting-rod that arm bilateral symmetry arranges, the lower end of described flexible rocking bar is hinged in vehicle frame front portion, the upper end hinge telescopic boom of described shrinking connecting-rod, and the flexible upper end of rocking bar and the lower end of shrinking connecting-rod are hinged; Described arm lifting mechanism is located at arm rear, be included in lifting four-bar linkage and lifting drive link that arm bilateral symmetry arranges, described lifting four-bar linkage be included in forward and backward lifting rocking bar that vehicle frame rear portion is hinged and respectively with the lifting linking member of forward and backward lifting rocking bar hinge, the front end hinge swivel arm of described lifting drive link, a hinge point of the rear end of lifting drive link and lifting linking member forms compound hinges.
In said structure, hoisting arm expansion winding machine telescopic boom flexible, arm lifting mechanism passes motion to swivel arm by lifting drive link, and realizes the lifting of swivel arm with hoisting arm expansion mechanism combined action.
The common driver train of described flexible rocking bar is the flexible servomotor of being located on vehicle frame; The dynamic action of described lifting four-bar linkage is in front lifting rocking bar, and the common driver train of described front lifting rocking bar is the lifting servomotor of being located at vehicle frame.
The beneficial effects of the utility model:
1, the utility model plane two-freedom nine bar servo-drive face-up transporting hoist of container hoisting cranes by servomotor directly drive, linkage transmission is realized handling, lifting task, can effectively overcome conventional hydraulic formula face-up transporting hoist of container hoisting crane process and assemble require high, maintaining cost is high, the not shortcoming such as length, leakage of oil of life-span.
2, the utility model integral structure is that outer revolute pair drives, and closes chain-drive form, and all servomotors are installed in frame, effectively reduce the weight of each member, have that movement inertia is little, track output flexibly, precision advantages of higher.
(4) accompanying drawing explanation:
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Fig. 2 is initial, the reset working state schematic representation of Fig. 1 embodiment.
Fig. 3 is the flexible working state schematic representation of Fig. 1 embodiment.
Fig. 4 is the lifting working state schematic representation of Fig. 1 embodiment.
Figure number mark: 1, vehicle frame; 2, swivel arm; 3, telescopic boom; 4, fixing device; 5, flexible rocking bar; 6, shrinking connecting-rod; 7, lifting drive link; 8, front lifting rocking bar; 9, rear lifting rocking bar; 10, lifting linking member.
(5) specific embodiment:
Below in conjunction with accompanying drawing illustrated embodiment, the technical solution of the utility model is described further.
The utility model plane two-freedom nine bar servo-drive face-up transporting hoist of container hoisting cranes comprise the arm and arm lifting mechanism and the hoisting arm expansion mechanism that arrange based on vehicle frame 1.
Described arm comprises swivel arm 2 and telescopic boom 3, the lower end of described swivel arm 2 is hinged in the middle part of vehicle frame 1, described telescopic boom 3 is installed on swivel arm 2 by sliding pair, in concrete a kind of mode, swivel arm 2 and telescopic boom 3 all adopt square steel tube, telescopic boom 3 is snug fit in swivel arm 2 in the suitable for reading of swivel arm 2, and the fixing device 4 that freight container is captured is located at the front end of telescopic boom 3, as shown in Figure 1.
Described hoisting arm expansion mechanism is located at arm front, for the flexible rocking bar 5 and the shrinking connecting-rod 6 that arrange in arm bilateral symmetry, the lower end of described flexible rocking bar 5 is hinged in vehicle frame 1 front portion, the upper end hinge telescopic boom 3 of described shrinking connecting-rod 6, the flexible upper end of rocking bar 5 and the lower end of shrinking connecting-rod 6 are hinged mutually; The flexible common driver train of rocking bar 5 in both sides is the flexible servomotor of being located on vehicle frame 1, as shown in Figure 1.
Described arm lifting mechanism is located at arm rear, for the lifting four-bar linkage and the lifting drive link 7 that arrange in arm bilateral symmetry, described lifting four-bar linkage is included in front lifting rocking bar 8 and rear lifting rocking bar 9 and the lifting linking member 10 that vehicle frame 1 rear portion is hinged, the front and back ends of described lifting linking member 10 is hinged with front lifting rocking bar 8 and rear lifting rocking bar 9 respectively, the front end hinge swivel arm 2 of described lifting drive link 7, the hinge point of the rear end of lifting drive link 7 and lifting linking member 10 rear ends forms compound hinges; Before both sides, the common driver train of lifting rocking bar 8 is the lifting servomotor of being located on vehicle frame, as shown in Figure 1.
As shown in Figure 2, the initial condition of the utility model in dead work, now swivel arm 2 turns to low level, and telescopic boom 3 bounces back in swivel arm 2.
As shown in Figure 3, the utility model is under the driving of hoisting arm expansion mechanism, and telescopic boom 3 stretches out, and completes clamping dead ahead freight container.
As shown in Figure 4, the utility model is under the driving of lifting four-bar linkage and lifting drive link 7 and the combined action of hoisting arm expansion mechanism, and swivel arm 2 rises, and completes the lifting operation to freight container.
Swivel arm 2 of the present utility model completes after unloading task, resets to initial condition as shown in Figure 2, prepares clamping and transport operation next freight container.