Abstract
The disclosed subject matter is directed to a hydraulic steering shear-fork aerial work platform that comprises a running chassis and a lifting device. The running chassis includes a chassis body and a running device that comprises a left wheel carrier, a right wheel carrier, a linkage frame, and a steering oil cylinder. The left wheel carrier and the right wheel carrier are rotatably installed on the chassis body through wheel carrier shafts. The two ends of the linkage frame are respectively hinged to the left wheel carrier and the right wheel carrier. One end of the steering oil cylinder is installed at one end of the linkage frame, and the other end of the steering oil cylinder is fixedly connected with the wheel carrier shaft through an installing plate.
Claims
1. A hydraulic steering shear-fork aerial work platform comprising a running chassis and a lifting device, wherein: the running chassis comprises: a chassis body; and a running device comprising a left steering wheel, a right steering wheel, a left wheel carrier, a right wheel carrier, a linkage frame, and a steering oil cylinder, wherein the left steering wheel and the right steering wheel are respectively installed on the left wheel carrier and the right wheel carrier, and wherein the left wheel carrier and the right wheel carrier are rotatably installed on the chassis body through wheel carrier shafts; wherein the running chassis is characterized in that two ends of the linkage frame are respectively hinged to the left wheel carrier and the right wheel carrier; wherein the linkage frame further comprises a steering oil cylinder installing portion for a first end of the steering oil cylinder to be installed; and wherein a second end of the steering oil cylinder is connected with at least one of the wheel carrier shafts through an installing plate, so that the left steering wheel and the right steering wheel turn towards a first side when the steering oil cylinder is controlled to extend, and the left steering wheel and the right steering wheel turn towards a second side when the steering oil cylinder is controlled to withdraw; wherein the lifting device comprises a shear fork lifting structure and a lifting platform, wherein the shear-fork lifting structure is formed by connecting a plurality of shear-fork units, and wherein a first bottom end of each shear-fork unit is hinged to the running chassis, and a second end of each shear-fork unit is hinged to a sliding block that is in sliding fit with the running chassis; wherein the lifting device further comprises a lifting detection and control system comprising a potentiometer installed on a rotation shaft of the shear-fork lifting structure and a controller, wherein any lifting height corresponds to a unique rotating angle of the rotation shaft, wherein the potentiometer is configured to correspond to a unique resistance value corresponding to all heights recorded in the controller, and wherein a limit on a lifting height of the lifting device is configured to be achieved by setting a resistance value correlated with the limit on the lifting height of the lifting device.
2. The hydraulic steering shear-fork aerial work platform according to claim 1, characterized in that the left steering wheel and the right steering wheel are respectively configured to be driven by a left driving motor fixed to the left wheel carrier and a right driving motor fixed to the right wheel carrier.
3. The hydraulic steering shear-fork aerial work platform according to claim 1, characterized in that the running device further comprises a left rear wheel and a right rear wheel that are respectively configured to be driven by a left driving motor and a right driving motor fixed to the chassis body; wherein the left steering wheel and the right steering wheel are installed respectively through a left wheel connecting disc fixed to the left wheel carrier and a right wheel connecting disc fixed to the right wheel carrier.
4. The hydraulic steering shear-fork aerial work platform according to claim 1, characterized in that the chassis body further comprises a pit hole assembly comprising a flip plate, a clamping claw, a lower connecting rod, a middle connecting rod, and a press rod, wherein the press rod is movably installed inside a sleeve, wherein an upper end of the press rod is pressed by the lifting device, a lower end of the press rod abuts against a press wheel rotatably connected to a first end of the middle connecting rod, wherein a second end of the middle connecting rod is rotatably connected with a first end of the lower connecting rod, wherein a second end of the lower connecting rod is movably connected with a first end of the clamping claw, and the clamping claw is used for fixing the flip plate; wherein a middle portion of the middle connecting rod is rotatably connected to a base plate through a first shaft, and a second end of the clamping claw is rotatably connected to the base plate through a second shaft; such that when the lifting device descends, the lifting device presses the upper end of the press rod, a force is transferred to the first end of the middle connecting rod through the press wheel and then is transferred to the second end of the middle connecting rod through rotation of the middle connecting rod, wherein the force is transferred to the lower connecting rod, the lower connecting rod transfers a first part of the force to the clamping claw, and the remaining part of the force acts on an air rod to make the air rod withdraw and accumulate potential energy in the air rod; wherein the clamping claw and the flip plate are fixed such that the flip plate can be put away; when the lifting device ascends, the stress exerted on the upper end of the press rod is released, the potential energy stored in the air rod is converted, the air rod is opened and acts on the lower connecting rod in a force mode, in a first configuration the flip plate is driven to be erected, and in a second configuration, the press rod is reset through force transfer to adapt to pressing again from the lifting device; when the flip plate is erected, a complete machine can be prevented from being caught in a pit hole.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
(1) FIG. 1 is a side view of the invention;
(2) FIG. 2 is a structural view of a running device of the embodiment 1 of the invention;
(3) FIG. 3 is a structural view of a pit hole assembly of the invention;
(4) FIG. 4 is a rear view of the embodiment 2 of the invention;
(5) FIG. 5 is a structural view of a running device of the embodiment 2 of the invention;
(6) As shown in the figures, 1running chassis; 2lifting device;
(7) 11chassis body; 12running device;
(8) 21shear-fork type lifting structure; 22lifting platform;
(9) 11-1flip plate, 11-2clamping claw, 11-3lower connecting rod, 11-4middle connecting rod, 11-5press rod, 11-6base plate, 11-7first shaft, 11-8second shaft, 11-9air rod;
(10) 121left steering wheel, 122right steering wheel, 123left wheel carrier, 124right wheel carrier, 125linkage frame, 126steering oil cylinder, 127installing plate, 128left driving motor, 129right driving motor, 130wheel carrier shaft; 1251steering oil cylinder installing portion; 131left wheel connecting disc, 132right wheel connecting disc; 128left driving motor, 129right driving motor.
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1
(11) As shown in FIG. 1, a front-drive front-steering shear-fork type aerial work platform comprises a running chassis 1 and a lifting device 2. The running chassis comprises a chassis body 11 and a running device 12. The lifting device 2 comprises a shear-fork type lifting structure 21 and a lifting platform 22.
(12) As shown in FIG. 2, the running device 12 comprises a left steering wheel 121, a right steering wheel 122, a left wheel carrier 123, a right wheel carrier 124, a linkage frame 125 and a steering oil cylinder 126, and the left steering wheel 121 and the right steering wheel 122 are respectively installed on the left wheel carrier 123 and the right wheel carrier 124 and are respectively driven by a left driving motor 128 fixed to the left wheel carrier 123 and a right driving motor 129 fixed to the right wheel carrier 124. The left wheel carrier 123 and the right wheel carrier 124 are rotatably installed on the chassis body 11 through wheel carrier shafts 130. The two ends of the linkage frame 125 are respectively hinged to the left wheel carrier 123 and the right wheel carrier 124. The linkage frame 125 further comprises a steering oil cylinder installing portion 1251 for one end of the steering oil cylinder 126 to be installed. The other end of the steering oil cylinder 126 is fixedly connected with the wheel carrier shaft 130 through an installing plate 127, so that the left steering wheel 121 and the right steering wheel 122 turn towards one side when the steering oil cylinder 126 is controlled to extend, and the left steering wheel 121 and the right steering wheel 122 turn towards the other side when the steering oil cylinder 126 is controlled to withdraw.
(13) As shown in FIG. 1, the shear-fork type lifting structure 21 is formed by connecting a plurality of shear-fork units 211, one end of the shear-fork unit 211 at the bottom is hinged to the running chassis 1, the other end of the shear-fork unit 211 is hinged to a sliding block 212, and the sliding block 212 is in sliding fit with the running chassis 1. The lifting device further comprises a lifting detection and control system, the lifting detection and control system comprises a potentiometer 213 installed on the rotation shaft of the shear-fork type lifting structure 21 and a controller, any lifting height corresponds to the unique rotating angle of the rotation shaft, the potentiometer 213 can show a unique resistance value, the unique resistance value corresponding to all heights is recorded in the controller, and the limit on the lifting height of the lifting device is achieved by setting the resistance value.
(14) As shown in FIG. 3, the chassis body 11 further comprises a pit hole assembly, the pit hole assembly comprises a flip plate 11-1, a clamping claw 11-2, a lower connecting rod 11-3, a middle connecting rod 11-4 and a press rod 11-5, the press rod 11-5 is movably installed inside a sleeve, the upper end of the press rod is pressed by the lifting device 2, the lower end of the press rod abuts against a press wheel rotatably connected to one end of the middle connecting rod 11-4, the other end of the middle connecting rod 11-4 is rotatably connected with one end of the lower connecting rod 11-3, the other end of the lower connecting rod 11-3 is movably connected with one end of the clamping claw 11-2, and the clamping claw 11-2 is used for fixing the flip plate 11-1. The middle of the middle connecting rod 11-4 is rotatably connected to the base plate 11-6 through a first shaft 11-7, and the other end of the clamping claw 11-2 is rotatably connected to the base plate 11-6 through a second shaft 11-8. When the lifting device 2 descends, the lifting device 2 presses the upper end of the press rod 11-5, a force is transferred to one end of the middle connecting rod 11-4 through the press wheel and then is transferred to the other end of the middle connecting rod 11-4 through rotation of the middle connecting rod 11-4, the force is transferred to the lower connecting rod 11-3, the lower connecting rod 11-3 transfers a part of the force to the clamping claw 11-2, and the other part of the force acts on an air rod 11-9 to make the air rod 11-9 withdraw and accumulate potential energy in the air rod 11-9. In addition, due to the fact that the clamping claw 11-2 and the flip plate 11-1 are fixed, the flip plate 11-1 can be put away. When the lifting device 2 ascends, the stress exerted on the upper end of the press rod 11-5 is released, the potential energy stored in the air rod 11-9 is converted, the air rod 11-9 is opened and acts on the lower connecting rod 11-3 in a force mode, on the one hand, the flip plate 11-1 is driven to be erected, and on the other hand, the press rod 11-5 is reset through force transfer to adapt to pressing again from the lifting device 2. When the flip plate 11-1 is erected, the complete machine can be prevented from being caught in a pit hole.
(15) As shown in FIG. 1, the chassis body 11 is provided with a drawer 111, and a hydraulic oil pump, a controller and an accumulator of the steering oil cylinder 126 are arranged in the drawer 111. The power lines and signal lines of the hydraulic oil pump, the controller and the accumulator are led out of the drawer 111 and then are movably installed at fixed positions through drag chains arranged on the chassis body 11.
Embodiment 2
(16) As shown in FIG. 1, a rear-drive front-steering shear-fork type aerial work platform comprises a running chassis 1 and a lifting device 2. The running chassis comprises a chassis body 11 and a running device 12. The lifting device 2 comprises a shear-fork type lifting structure 21 and a lifting platform 22.
(17) As shown in FIGS. 4 and 5, the running device 12 comprises a left steering wheel 121, a right steering wheel 122, a left wheel carrier 123, a right wheel carrier 124, a left wheel connecting disc 131, a right wheel connecting disc 132, a linkage frame 125, a steering oil cylinder 126, a left rear wheel, a right rear wheel, a left driving motor 128 and a right driving motor 129. The left rear wheel and the right rear wheel are driven respectively by the left driving motor 128 and the right driving motor 129 fixed to the chassis body 11. The left steering wheel 121 and the right steering wheel 122 are installed respectively through the left wheel connecting disc 131 fixed to the left wheel carrier 123 and the right wheel connecting disc 132 fixed to the right wheel carrier 123.
(18) The left wheel carrier 123 and the right wheel carrier 124 are rotatably installed on the chassis body 11 through the wheel carrier shafts 130.
(19) The two ends of the linkage frame 125 are respectively hinged to the left wheel carrier 123 and the right wheel carrier 124. The linkage frame 125 further comprises a steering oil cylinder installing portion 1251 for one end of the steering oil cylinder 126 to be installed. The other end of the steering oil cylinder 126 is fixedly connected with the wheel carrier shaft 130 through an installing plate 127, so that the left steering wheel 121 and the right steering wheel 122 turn towards one side when the steering oil cylinder 126 is controlled to extend, and the left steering wheel 121 and the right steering wheel 122 turn towards the other side when the steering oil cylinder 126 is controlled to withdraw.
(20) As shown in FIG. 1, the shear-fork type lifting structure 21 is formed by connecting a plurality of shear-fork units 211, one end of the shear-fork unit 211 at the bottom is hinged to the running chassis 1, the other end of the shear-fork unit 211 is hinged to a sliding block 212, and the sliding block 212 is in sliding fit with the running chassis 1. The lifting device further comprises a lifting detection and control system, the lifting detection and control system comprises a potentiometer 213 installed on the rotation shaft of the shear-fork type lifting structure 21 and a controller, any lifting height corresponds to the unique rotating angle of the rotation shaft, the potentiometer 213 can show a unique resistance value, the unique resistance value corresponding to all heights is recorded in the controller, and the limit on the lifting height of the lifting device is achieved by setting the resistance value.
(21) As shown in FIG. 3, the chassis body 11 further comprises a pit hole assembly, the pit hole assembly comprises a flip plate 11-1, a clamping claw 11-2, a lower connecting rod 11-3, a middle connecting rod 11-4 and a press rod 11-5, the press rod 11-5 is movably installed inside a sleeve, the upper end of the press rod is pressed by the lifting device 2, the lower end of the press rod abuts against a press wheel rotatably connected to one end of the middle connecting rod 11-4, the other end of the middle connecting rod 11-4 is rotatably connected with one end of the lower connecting rod 11-3, the other end of the lower connecting rod 11-3 is movably connected with one end of the clamping claw 11-2, and the clamping claw 11-2 is used for fixing the flip plate 11-1. The middle of the middle connecting rod 11-4 is rotatably connected to the base plate 11-6 through a first shaft 11-7, and the other end of the clamping claw 11-2 is rotatably connected to the base plate 11-6 through a second shaft 11-8. When the lifting device 2 descends, the lifting device 2 presses the upper end of the press rod 11-5, a force is transferred to one end of the middle connecting rod 11-4 through the press wheel and then is transferred to the other end of the middle connecting rod 11-4 through rotation of the middle connecting rod 11-4, the force is transferred to the lower connecting rod 11-3, the lower connecting rod 11-3 transfers a part of the force to the clamping claw 11-2, and the other part of the force acts on an air rod 11-9 to make the air rod 11-9 withdraw and accumulate potential energy in the air rod 11-9. In addition, due to the fact that the clamping claw 11-2 and the flip plate 11-1 are fixed, the flip plate 11-1 can be put away. When the lifting device 2 ascends, the stress exerted on the upper end of the press rod 11-5 is released, the potential energy stored in the air rod 11-9 is converted, the air rod 11-9 is opened and acts on the lower connecting rod 11-3 in a force mode, on the one hand, the flip plate 11-1 is driven to be erected, and on the other hand, the press rod 11-5 is reset through force transfer to adapt to pressing again from the lifting device 2. When the flip plate 11-1 is erected, the complete machine can be prevented from being caught in a pit hole.
