CN113353861A - Crank arm type lifter with high structural strength - Google Patents
Crank arm type lifter with high structural strength Download PDFInfo
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- CN113353861A CN113353861A CN202110690257.4A CN202110690257A CN113353861A CN 113353861 A CN113353861 A CN 113353861A CN 202110690257 A CN202110690257 A CN 202110690257A CN 113353861 A CN113353861 A CN 113353861A
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
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Classifications
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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
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/044—Working platforms suspended from booms
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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
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a crank arm type lifter with high structural strength, which comprises a chassis, a sliding groove, an operation platform, a support frame and a through hole, wherein the upper side of the chassis is rotatably connected with a rotating platform, a first motor connected with the rotating platform is fixedly arranged in the chassis, and an upright post is fixed at the top of the rotating platform. This crank arm formula lift that structural strength is high, be provided with first gear and second gear, first crank arm, second crank arm and third crank arm all are provided with two, and between two first crank arms, all be connected through the cooperation meshing between first gear and the second gear between two second crank arms and between two third crank arms, when the pneumatic cylinder promoted a certain first crank arm or second crank arm or third crank arm and rotate, promote corresponding first crank arm or second crank arm or third crank arm through the meshing between first gear and the second gear and rotate same angle, the structural strength of lift when having improved this crank arm through above-mentioned structure, it has more the practicality to use.
Description
Technical Field
The invention relates to the technical field of crank arm type lifters, in particular to a crank arm type lifter with high structural strength.
Background
The crank arm type lifter is lifting equipment for high-altitude operation, and is more suitable for narrow space compared with the traditional lifting equipment.
The existing crank arm type lifter is not provided with a self-locking structure generally, only depends on a hydraulic system to support a crank arm continuously, so that the burden on the hydraulic system is large, once the hydraulic system fails, accidents are easy to cause, certain potential safety hazards are caused when the existing crank arm type lifter is used, the existing crank arm type lifter is only supported by a single crank arm, so that the overall structural strength of the crank arm type lifter is not high, heavy equipment cannot be lifted for operation, the existing crank arm type lifter is not provided with a lifting device generally, so that materials carried by an operator are limited during one-time lifting, reciprocating lifting is required during transportation of a large amount of materials, the operation time is prolonged, the use is not convenient enough, in the actual use process, the lowest height of an operation platform of the existing crank arm type lifter is high, the operator needs to climb a hanging ladder to enter the operation platform generally, and the operation difficulty of the crank arm type lifter is further increased, in view of the above, there is a need for improvements to existing devices.
Disclosure of Invention
The invention aims to provide a crank arm type lifter with high structural strength, and aims to solve the problems that the existing crank arm type lifter provided in the background art is not provided with a self-locking structure generally, only relies on a hydraulic system to support a crank arm continuously, so that the load on the hydraulic system is large, once the hydraulic system fails, accidents are easily caused, and certain potential safety hazards are caused when the existing crank arm type lifter is used.
In order to achieve the purpose, the invention provides the following technical scheme: a crank arm type lifter with high structural strength, which comprises a chassis, a chute, an operation platform, a supporting frame and a through hole,
the upper side of the chassis is rotatably connected with a rotating platform, a first motor connected with the rotating platform is fixedly installed inside the chassis, an upright post is fixed at the top of the rotating platform, the left upper side of the upright post is rotatably connected with the right ends of two first crank arms, the left end of each first crank arm is rotatably connected with the right lower side of each first straight arm, each first straight arm is arranged above the left of the upright post, the right upper side of each first straight arm is rotatably connected with the left ends of two second crank arms, the right end of each second crank arm is rotatably connected with the left lower side of each second straight arm, each second straight arm is arranged above the right of each first straight arm, the left upper side of each second straight arm is rotatably connected with the right end of each third crank arm, the left end of each third crank arm is rotatably connected with the right side of each third straight arm, and each third straight arm is arranged on the left of each second straight arm;
the chute is formed in the left side of the third straight arm, an operation platform which is connected with the chute in a sliding mode is mounted on the left side of the third straight arm, a second motor is fixedly mounted at the top of the third straight arm, the bottom of the second motor is connected with a lead screw, the lead screw is in threaded connection with the right side of the operation platform, a hanging frame is fixedly mounted at the top of the right side of the operation platform, a winch is fixedly mounted at the top of the hanging frame, and the winch is connected with a lifting hook through a steel wire rope;
both ends about first crank arm, second crank arm about both ends and third crank arm about both ends equal fixed mounting have first gear, and the front side that is close to the first gear of chassis front side is fixed with first terminal surface ratchet dish, inside, the inside equal fixed rotation of the straight arm of second inside and the straight arm of third inside the stand, first straight arm, the straight arm of second inside and the straight arm of third inside is connected with the second gear of being connected with first gear engagement, and inside, the straight arm of first inside, the straight arm of second inside and the straight arm of third inside all sets up flutedly, the inside sliding connection of recess has the slip table, and installs electromagnetic switch between slip table and the recess inner wall, the slip table rear side is fixed with the second terminal surface ratchet dish, and the second terminal surface ratchet dish is connected with first terminal surface ratchet dish meshing.
Preferably, the left side and the right side of the chassis and the left side of the first straight arm are both fixed with a support frame, a rubber pad is fixedly mounted at the top of the support frame, and the bottom of the first straight arm, the bottom of the second straight arm and the bottom of the third straight arm are all placed on the rubber pad.
Preferably, the center line of the rotating table, the center line of the upright post and the center line of the chassis coincide.
Preferably, the upright column is connected with the first crank arm, the first straight arm is connected with the second crank arm, the second straight arm is connected with the third crank arm through a hydraulic cylinder, and the upright column, the first crank arm, the first straight arm, the second crank arm, the second straight arm and the third crank arm are connected with the hydraulic cylinder in a rotating manner.
Preferably, the two first crank arms, the two second crank arms and the two third crank arms are connected through meshing between the first gear and the second gear.
Preferably, first crank arm, second crank arm and third crank arm all are "L" type, and between two first crank arms, between two second crank arms and between two third crank arms all be rotational symmetry and set up, and stand, first straight arm, the straight arm of second and the straight arm of third all are vertical form setting simultaneously.
Preferably, the two support frames welded and fixed on the left side of the first straight arm are symmetrically arranged by taking the third straight arm as the center.
Preferably, the lowest end of the third straight arm and the lowest end of the chassis are positioned on the same horizontal plane.
Preferably, the through hole is formed in the right side of the operation platform, and the center line of the through hole is overlapped with the center line of the lifting hook.
Compared with the prior art, the invention has the beneficial effects that: the crank arm type lifter with high structural strength is provided with a crank arm,
(1) the electromagnetic switch pushes the sliding table to slide backwards along the groove until the second end surface ratchet disc is meshed with the first end surface ratchet disc, at the moment, the first gear and the second gear can only rotate in a single direction, so that the effect of limiting the rotation direction between the upright post and the first crank arm, between the first crank arm and the first straight arm, between the first straight arm and the second crank arm, between the second crank arm and the second straight arm, between the second straight arm and the third crank arm and between the third crank arm and the third straight arm is achieved, the problem that the hydraulic driving device fails to enable the operation platform to fall fast is avoided, and the use safety is greatly improved;
(2) the lifting frame, the winch and the through hole are arranged, the winch pulls the lifting hook through the steel wire rope, so that the lifting hook pulls a heavy object to enter the lifting frame through the through hole, an operator can conveniently and quickly supplement materials from the ground, time wasted by repeated lifting is reduced, and the working efficiency is improved;
(3) the lifting machine is provided with a first gear and a second gear, the number of the first crank arms, the number of the second crank arms and the number of the third crank arms are two, the two first crank arms, the two second crank arms and the two third crank arms are connected through the matching meshing between the first gear and the second gear, when the hydraulic cylinder pushes one of the first crank arms, the second crank arms or the third crank arms to rotate, the corresponding first crank arms, the second crank arms or the third crank arms are pushed to rotate by the meshing between the first gear and the second gear by the same angle, the structural strength of the lifting machine is improved through the structure when the crank arms are bent, and the lifting machine is more practical in use;
(4) be provided with operation platform and spout, the second motor drives the lead screw and rotates, and the lead screw promotes operation platform and slides to the spout bottom, plays the effect that reduces operation platform height, and the operation personnel of being convenient for step on operation platform fast, and it is more convenient to use.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic left side sectional view of a third straight arm according to the present invention;
FIG. 4 is a schematic top sectional view of the connection between the second straight arm and the third crank arm according to the present invention;
FIG. 5 is a schematic sectional view of the connection between the second straight arm and the third crank arm according to the present invention;
FIG. 6 is a schematic view of the present invention.
In the figure: 1. the base plate, 2, the revolving stage, 3, the first motor, 4, the stand, 5, first crank arm, 6, first straight arm, 7, second crank arm, 8, second straight arm, 9, third crank arm, 10, third straight arm, 11, the spout, 12, the work platform, 13, the second motor, 14, the lead screw, 15, the gallows, 16, the hoist engine, 17, wire rope, 18, the lifting hook, 19, the first gear, 20, the first terminal surface ratchet disc, 21, the second gear, 22, the recess, 23, the slip table, 24, the electromagnetic switch, 25, the second terminal surface ratchet disc, 26, the pneumatic cylinder, 27, the support frame, 28, the rubber pad, 29, the through-hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a crank arm type lifter with high structural strength is disclosed, as shown in figure 1, figure 2 and figure 6, a rotating platform 2 is rotatably connected on the upper side of a chassis 1, a first motor 3 connected with the rotating platform 2 is fixedly arranged in the chassis 1, supporting frames 27 are fixed on the left side and the right side of the chassis 1 and the left side of a first straight arm 6, a rubber pad 28 is fixedly arranged on the top of the supporting frame 27, the bottom of the first straight arm 6, the bottom of a second straight arm 8 and the bottom of a third straight arm 10 are all placed on the rubber pad 28, when the crank arm type lifter stops running, the supporting frames 27 play a role of supporting the first straight arm 6, the second straight arm 8 and the third straight arm 10, the center line of the rotating platform 2, the center line of an upright post 4 and the center line of the chassis 1 are superposed, so that the center of gravity of the upright post 4 is close to the center of the chassis 1, the stability of the crank arm type lifter is improved, the upright post 4 is fixed on the top of the rotating platform 2, the left upper side of the upright post 4 is rotatably connected with the right ends of the two first crank arms 5, the upright post 4 is connected with the first crank arms 5, the first straight arm 6 is connected with the second crank arm 7, the second straight arm 8 is connected with the third crank arm 9 through the hydraulic cylinder 26, the upright post 4, the first crank arms 5, the first straight arm 6, the second crank arm 7, the second straight arm 8 and the third crank arm 9 are rotatably connected with the hydraulic cylinder 26, so that the hydraulic cylinder 26 can push the first crank arm 5, the second crank arm 7 or the third crank arm 9 to rotate, the two first crank arms 5, the two second crank arms 7 and the two third crank arms 9 are respectively connected with the first gear 19 and the second gear 21 through the meshing connection between the first gear 19 and the second gear 21 when one of the first crank arm 5, the second crank arm 7 or the third crank arm 9 rotates, and the corresponding first crank arm 5, the second crank arm 7 or the third crank arm 9 rotates along with the first gear 19, the first crank arm 5, the second crank arm 7 and the third crank arm 9 are all in an L shape, the two first crank arms 5, the two second crank arms 7 and the two third crank arms 9 are rotationally symmetrically arranged, the upright post 4, the first straight arm 6, the second straight arm 8 and the third straight arm 10 are vertically arranged, the first straight arm 6, the second straight arm 8 and the third straight arm 10 are always kept in a vertical state by utilizing the principle that diamond opposite sides are parallel, the left end of the first crank arm 5 is rotationally connected with the right lower side of the first straight arm 6, the first straight arm 6 is arranged above the upright post 4, the two support frames 27 welded and fixed on the left side of the first straight arm 6 are symmetrically arranged by taking the third straight arm 10 as the center, the two support frames 27 simultaneously support the third straight arm 10, so that the support for the third straight arm 10 is more stable, the right upper side of the first straight arm 6 is rotationally connected with the left ends of the two second crank arms 7, and the right end of the second crank arm 7 is rotatably connected with the lower left side of the second straight arm 8, the second straight arm 8 is arranged above the right side of the first straight arm 6, the upper left side of the second straight arm 8 is rotatably connected with the right end of the third crank arm 9, the left end of the third crank arm 9 is rotatably connected with the right side of the third straight arm 10, the third straight arm 10 is arranged at the left side of the second straight arm 8, the lowest end of the third straight arm 10 and the lowest end of the chassis 1 are positioned on the same horizontal plane, and the third straight arm 10 is prevented from contacting with the ground and blocking one end of the crank arm type lifter.
As shown in fig. 1, 3, 4 and 5, the chute 11 is arranged at the left side of the third straight arm 10, the left side of the third straight arm 10 is provided with a working platform 12 connected with the chute 11 in a sliding manner, the top of the third straight arm 10 is fixedly provided with a second motor 13, the bottom of the second motor 13 is connected with a lead screw 14, the lead screw 14 is connected with the right side of the working platform 12 in a threaded manner, the top of the right side of the working platform 12 is fixedly provided with a hanger 15, the top of the hanger 15 is fixedly provided with a winch 16, the winch 16 is connected with a lifting hook 18 through a steel wire rope 17, the left and right ends of the first crank arm 5, the left and right ends of the second crank arm 7 and the left and right ends of the third crank arm 9 are fixedly provided with first gears 19, the front side of the first gear 19 near the front side of the chassis 1 is fixedly provided with a first end ratchet plate 20, the inside of the upright column 4, the first straight arm 6, the inside of the second straight arm 8 and the inside of the third straight arm 10 are fixedly and rotatably connected with second gears 21 engaged with the first gears 19, and inside the stand 4, inside the first straight arm 6, inside the second straight arm 8 and inside the third straight arm 10 all seted up the recess 22, the inside sliding connection of recess 22 has a slip table 23, and install electromagnetic switch 24 between slip table 23 and the recess 22 inner wall, the slip table 23 rear side is fixed with second terminal surface ratchet 25, and second terminal surface ratchet 25 and first terminal surface ratchet 20 meshing connection, through-hole 29 is seted up in operation platform 12 right side, and the central line of through-hole 29 and the coincidence of the central line of lifting hook 18, be convenient for wire rope 17 stimulates lifting hook 18, make lifting hook 18 stimulate the heavy object and get into inside gallows 15 through-hole 29.
The working principle is as follows: when the crank arm type lifter with high structural strength is used, one end of a chassis 1 is firstly moved to a designated position through a tire, a hydraulic supporting leg is opened, a vehicle-mounted power supply is switched on, a second motor 13 is started, the second motor 13 drives a lead screw 14 to rotate, the lead screw 14 pushes a working platform 12 to slide to the lowest side of a third straight arm 10 along a sliding groove 11, an operator can conveniently climb on the working platform 12 to use the crank arm, then the working platform 12 is reset, a hydraulic cylinder 26 is started, the hydraulic cylinder 26 pushes one first crank arm 5 to rotate, the corresponding other first crank arm 5 rotates by the same angle through the meshing connection of a first gear 19 and a second gear 21, and other hydraulic cylinders 26 are started to enable a second crank arm 7 and a third crank arm 9 to rotate along with the other crank arms to play a role of lifting the working platform 12, so that the structural strength of the crank arm type lifter is improved, the use is more practical, when the crank-type lifter operates, the electromagnetic switch 24 is started, the electromagnetic switch 24 pushes the sliding table 23 to slide backwards along the groove 22 until the second end surface ratchet disc 25 at the rear side of the sliding table 23 is meshed with the first end surface ratchet disc 20, the function of limiting the rotating direction of the first gear 19 and the second gear 21 is achieved, the operation platform 12 is prevented from falling rapidly when the hydraulic cylinder 26 fails, the safety of the crank-type lifter is greatly improved, when the material needs to be taken from the ground quickly, the winch 16 is started, the winch 16 winds the steel wire rope 17, the steel wire rope 17 pulls the lifting hook 18 to rise, the lifting hook 18 hooks the material to enter the hanging bracket 15 through the through hole 29, then the operator takes the material off without repeatedly lifting the crank-type lifter, the use is more convenient, this completes the work and is not described in detail in this specification as it is well known in the art.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a crank arm formula lift that structural strength is high, includes chassis (1), spout (11), work platform (12), support frame (27) and through-hole (29), its characterized in that:
the upper side of the chassis (1) is rotatably connected with a rotating platform (2), a first motor (3) connected with the rotating platform (2) is fixedly installed inside the chassis (1), the top of the rotating platform (2) is fixedly provided with a stand column (4), the left upper side of the stand column (4) is rotatably connected with the right ends of two first crank arms (5), the left end of each first crank arm (5) is rotatably connected with the right lower side of a first straight arm (6), a first straight arm (6) is arranged above the left side of the stand column (4), the right upper side of each first straight arm (6) is rotatably connected with the left ends of two second crank arms (7), the right end of each second crank arm (7) is rotatably connected with the left lower side of a second straight arm (8), the second straight arm (8) is arranged above the right of the first straight arm (6), the left upper side of the second straight arm (8) is rotatably connected with the right end of a third crank arm (9), the left end of the third crank arm (9) is rotatably connected with the right side of a third straight arm (10), the third straight arm (10) is arranged at the left of the second straight arm (8);
the sliding groove (11) is formed in the left side of a third straight arm (10), an operation platform (12) which is connected with the sliding groove (11) in a sliding mode is installed on the left side of the third straight arm (10), a second motor (13) is fixedly installed at the top of the third straight arm (10), the bottom of the second motor (13) is connected with a lead screw (14), the lead screw (14) is connected with the right side of the operation platform (12) in a threaded mode, a hanging bracket (15) is fixedly installed at the top of the right side of the operation platform (12), a winch (16) is fixedly installed at the top of the hanging bracket (15), and the winch (16) is connected with a hanging hook (18) through a steel wire rope (17);
the first crank arm (5) left and right ends, the second crank arm (7) left and right ends and the third crank arm (9) left and right ends are fixedly provided with first gears (19), the front side of the first gear (19) close to the front side of the chassis (1) is fixedly and rotatably connected with first end surface ratchet discs (20), grooves (22) are respectively formed in the column (4), the first straight arm (6), the second straight arm (8) and the third straight arm (10), the sliding tables (23) are connected in the grooves (22) in a sliding mode, electromagnetic switches (24) are installed between the sliding tables (23) and the inner walls of the grooves (22), and second end surface ratchet discs (25) are fixed on the rear side of the sliding tables (23), and the second end surface ratchet disc (25) is engaged and connected with the first end surface ratchet disc (20).
2. A structurally strong crank-type lifter according to claim 1, wherein: the chassis (1) left and right sides and first straight arm (6) left side all are fixed with support frame (27), and support frame (27) top fixed mounting has rubber pad (28), all place on rubber pad (28) first straight arm (6) bottom, second straight arm (8) bottom and third straight arm (10) bottom.
3. A structurally strong crank-type lifter according to claim 1, wherein: the central line of the rotating platform (2), the central line of the upright post (4) and the central line of the chassis (1) are superposed.
4. A structurally strong crank-type lifter according to claim 1, wherein: the connecting structure is characterized in that the upright column (4) is connected with the first crank arm (5), the first straight arm (6) is connected with the second crank arm (7), the second straight arm (8) is connected with the third crank arm (9) through a hydraulic cylinder (26), and the upright column (4), the first crank arm (5), the first straight arm (6), the second crank arm (7), the second straight arm (8) and the third crank arm (9) are connected with the hydraulic cylinder (26) in a rotating mode.
5. A structurally strong crank-type lifter according to claim 1, wherein: the two first crank arms (5), the two second crank arms (7) and the two third crank arms (9) are connected through the meshing between the first gear (19) and the second gear (21).
6. A structurally strong crank-type lifter according to claim 1, wherein: first crank arm (5), second crank arm (7) and third crank arm (9) all are "L" type, and between two first crank arms (5), between two second crank arms (7) and all be the rotational symmetry setting between two third crank arms (9), and stand (4), first straight arm (6), second straight arm (8) and third straight arm (10) all are vertical form setting simultaneously.
7. A structurally strong crank-type lifter according to claim 1, wherein: the two support frames (27) welded and fixed on the left side of the first straight arm (6) are symmetrically arranged by taking the third straight arm (10) as the center.
8. A structurally strong crank-type lifter according to claim 1, wherein: the lowest end of the third straight arm (10) and the lowest end of the chassis (1) are positioned on the same horizontal plane.
9. A structurally strong crank-type lifter according to claim 1, wherein: the through hole (29) is arranged on the right side of the operation platform (12), and the center line of the through hole (29) is superposed with the center line of the lifting hook (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690257.4A CN113353861A (en) | 2021-06-22 | 2021-06-22 | Crank arm type lifter with high structural strength |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690257.4A CN113353861A (en) | 2021-06-22 | 2021-06-22 | Crank arm type lifter with high structural strength |
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| Publication Number | Publication Date |
|---|---|
| CN113353861A true CN113353861A (en) | 2021-09-07 |
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| CN202110690257.4A Pending CN113353861A (en) | 2021-06-22 | 2021-06-22 | Crank arm type lifter with high structural strength |
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| CN206521256U (en) * | 2017-02-13 | 2017-09-26 | 河北建筑工程学院 | A kind of articulated arm lift |
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| CN109057835A (en) * | 2018-09-27 | 2018-12-21 | 长沙科达智能装备股份有限公司 | Multiple arch supporting trolley |
| CN210656028U (en) * | 2019-08-30 | 2020-06-02 | 珠海及力高空作业设备有限公司 | Lifting type operation platform and crank arm type overhead working truck |
| CN111943098A (en) * | 2020-09-22 | 2020-11-17 | 湖南杰希重工有限公司 | Crank arm type overhead working truck capable of automatically adjusting balance weight position |
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2021
- 2021-06-22 CN CN202110690257.4A patent/CN113353861A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110188978A1 (en) * | 2010-02-02 | 2011-08-04 | Romacly Glenn A | Articulated lift arm |
| CN103601075A (en) * | 2013-12-03 | 2014-02-26 | 三一汽车制造有限公司 | Crane |
| WO2015081772A1 (en) * | 2013-12-03 | 2015-06-11 | 三一汽车制造有限公司 | Crane |
| CN206521256U (en) * | 2017-02-13 | 2017-09-26 | 河北建筑工程学院 | A kind of articulated arm lift |
| CN206824858U (en) * | 2017-04-21 | 2018-01-02 | 上海振华重工(集团)股份有限公司 | Mobile liftable operating platform |
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| CN109057835A (en) * | 2018-09-27 | 2018-12-21 | 长沙科达智能装备股份有限公司 | Multiple arch supporting trolley |
| CN210656028U (en) * | 2019-08-30 | 2020-06-02 | 珠海及力高空作业设备有限公司 | Lifting type operation platform and crank arm type overhead working truck |
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