CN211769915U - Rotatable hydraulic type cantilever lifting device - Google Patents
Rotatable hydraulic type cantilever lifting device Download PDFInfo
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- CN211769915U CN211769915U CN202020340410.1U CN202020340410U CN211769915U CN 211769915 U CN211769915 U CN 211769915U CN 202020340410 U CN202020340410 U CN 202020340410U CN 211769915 U CN211769915 U CN 211769915U
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Abstract
The utility model discloses a rotatable hydraulic cantilever lifting device, which comprises a lifting arm, a base and a lifting hook; the base is fixed on a civil foundation; the upper end of the base is sequentially provided with a slewing bearing and a lifting device outer cylinder; the outer cylinder of the lifting device is connected with a rotary pair which is vertically arranged by a rotary support and a base to form a rotary shaft, and is driven by a rotary motor; the lifting device outer cylinder is internally provided with a lifting device inner cylinder which is in a moving pair with the lifting device outer cylinder; the upper end of the inner cylinder of the lifting device is provided with a lifting arm; the base, the slewing bearing, the lifting device inner cylinder and the lifting device outer cylinder are all hollow tubular structures, and the inner cavity of the base is provided with a hydraulic lifting device; the hydraulic lifting device comprises a hydraulic cylinder; the piston rod of the hydraulic cylinder is vertically arranged, and the upper end of the hydraulic cylinder is connected with the inner cylinder of the lifting device and the lifting arm to form a rotary pair. The utility model discloses promotion position, speed and rotation angle that can accurate control, realization that can the high accuracy promotes and rotates, and more abundant utilization place can play a role in narrow and small space.
Description
Technical Field
The utility model relates to a heavy load hoisting equipment makes technical field, in particular to rotatable fluid pressure type cantilever hoisting device.
Background
Cantilever elevator uses comparatively extensively at present. In the existing cantilever elevator, the existing cantilever elevator generally comprises a guide rail, an electric hoist, a motor, an upright post, an electric control system, and a lifting hook or a tray.
In the prior art, an electric hoist (composed of a motor and a winding drum) generally works to drive a steel wire rope, so that the heavy object is lifted and dropped. The base at the lower end of the upright post is fixed on a concrete foundation through foundation bolts, the motor drives the speed reducer driving device to enable the cantilever to rotate, and the electric hoist performs reciprocating operation on the cantilever I-shaped steel.
The swing arm crane has the characteristics of simple structure, convenience in operation, small occupied space, large operation range and the like. Therefore, the cantilever crane has wide application range and is applied to the places of logistics transportation, metal smelting, mechanical manufacturing, automobile manufacturing, warehouses, laboratories and the like.
In practical application, the cantilever crane drives the winding drum to control the lifting and descending of the heavy object by the motor, the precision of the cantilever crane on the operation line is difficult to guarantee, and the straightness and the height positioning are inaccurate. Meanwhile, the steel wire rope is used as a main stress member, the rigidity of the steel wire rope is insufficient, and the heavy object is unstable in the hoisting and rotating processes and is easy to shake or even tip over. The electric hoist serving as a common hoisting machine in the market is not stable enough in operation, and is easy to have faults such as steel wire rope groove crossing, breakage and the like, and even has production safety accidents in severe cases.
Therefore, how to solve the defects of unstable operation, difficult precision control, frequent routine maintenance and the like of the existing cantilever elevator becomes a technical problem which needs to be solved by technical personnel in the field urgently.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model provides a rotatable fluid pressure type cantilever hoisting device, the purpose of realization is promotion position, speed and rotation angle that can accurate control, and realization that can the high accuracy promotes and rotates, and more abundant utilization place can play a role in narrow and small space.
In order to achieve the above object, the utility model discloses a rotatable fluid pressure type cantilever hoisting device, including lifting arm, base and lifting hook.
Wherein the base is fixed on a civil foundation; a rotating motor is arranged on one side of the base;
the upper end of the base is sequentially provided with a slewing bearing and a lifting device outer cylinder; the outer cylinder of the lifting device is connected with the rotary pair with a rotary shaft vertically arranged by the rotary support and the base;
the lifting device outer cylinder is driven to rotate by the rotating motor;
a lifting device inner cylinder is arranged in the lifting device outer cylinder, a moving pair is formed between the lifting device outer cylinder and the lifting device inner cylinder, and the lifting device inner cylinder can reciprocate along the vertical direction; the upper end of the inner cylinder of the lifting device is provided with the lifting arm; the lifting arm is provided with the lifting hook;
the base, the slewing bearing, the lifting device inner cylinder and the lifting device outer cylinder are all hollow tubular structures; a hydraulic lifting device is arranged in the hollow inner cavity of the base, the slewing bearing, the lifting device inner cylinder and the lifting device outer cylinder;
the hydraulic lifting device comprises a hydraulic cylinder; a piston rod of the hydraulic cylinder is vertically arranged, and the upper end of the hydraulic cylinder is connected with the inner cylinder of the lifting device and the lifting arm to form a rotary pair;
when the lifting device works, the hydraulic cylinder drives the inner cylinder of the lifting device to reciprocate along the vertical direction.
Preferably, the outer wall of the inner cylinder of the lifting device is provided with an inner guide post and a plurality of inner guide lining plates;
a plurality of inner guide lining plates are symmetrically arranged on the inner guide column; each inner guide lining plate is contacted with the inner wall of the outer cylinder of the lifting device;
the inner wall of the outer barrel of the lifting device is provided with an outer guide post, a plurality of outer guide lining plates and a plurality of connecting plates;
each connecting plate is used for fixing two sides of the lifting device outer cylinder to enable the lifting device outer cylinder to be a whole;
a plurality of outer guide lining plates are symmetrically arranged on the outer guide column; each outer guide lining plate is contacted with the outer wall of the inner cylinder of the lifting device.
More preferably, a plurality of eccentric guide wheels are arranged on the inner wall of the outer cylinder of the lifting device; each eccentric guide wheel is contacted with the outer wall of the inner cylinder of the lifting device.
Preferably, a piston rod of the hydraulic cylinder, the inner cylinder of the lifting device and the lifting arm form a rotary pair through a thrust bearing;
the upper end of a piston rod of the hydraulic cylinder is sequentially connected with a lower supporting shaft and an upper supporting shaft; and the upper end of the upper support shaft is fixedly connected with the inner ring of the thrust bearing.
More preferably, a support ring is arranged outside the thrust bearing;
the support ring is of a tubular structure, the upper end of the support ring is fixed with the lifting arm, and the lower end of the support ring is sealed with the upper support shaft through an oil seal, so that the thrust bearing is protected in a sealing manner.
More preferably, an oil filling pipeline is arranged at the position of the lifting arm corresponding to the thrust bearing; the oil filling pipeline is connected with the corresponding oil cup and provides lubricating oil for the thrust bearing.
Preferably, a transmission gear set is arranged between the rotating motor and the lifting device outer cylinder, and the rotating motor transmits power to the lifting device outer cylinder by virtue of the transmission gear set to drive the lifting device outer cylinder to rotate.
Preferably, the base is fixed on the civil foundation through bolt connection;
the rotating motor is connected with the base through a high-strength bolt;
the base is connected with the slewing bearing through a high-strength bolt;
the outer cylinder of the lifting device is connected with the slewing bearing through a high-strength bolt;
the hydraulic cylinder is arranged in the base in a shaft lug mounting mode;
the inner cylinder of the lifting device is connected with the lifting arm through a high-strength bolt;
the lifting arm is connected with the lifting hook through a high-strength bolt.
The utility model has the advantages that:
1. the utility model discloses an use position, speed and the rotation angle that can make the more accurate control of cantilever hoisting device promote.
2. The utility model discloses an use and to make cantilever hoisting device realize promoting, rotatory, the make full use of place can play important role in narrow and small space.
3. The utility model discloses utilize hydraulic system to realize promoting, it is stable to promote the process, and the lifting capacity is big.
4. The utility model discloses an use and to make cantilever hoisting device structure more stable, it is more high-efficient during the operation, realize more quick promotion.
5. The utility model discloses an use and make cantilever hoisting device structure simpler, difficult trouble, it is more convenient to maintain.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.
Fig. 2 shows a schematic structural diagram of an outer wall of an inner cylinder of a lifting device in an embodiment of the present invention.
Fig. 3 is a schematic view illustrating a connection structure between the inner guide post and the inner guide lining plate according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of an inner wall of an outer cylinder of a lifting device according to an embodiment of the present invention.
Fig. 5 is a schematic view showing a connection structure between the outer guide post, the outer guide lining plate and the eccentric guide wheel according to an embodiment of the present invention.
Fig. 6 shows a schematic view of a connection structure between the piston rod and the inner cylinder and the lifting arm of the lifting device in an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1, the rotatable hydraulic cantilever lifting device comprises a lifting arm 1, a base 7 and a hook 8.
Wherein, the base 7 is fixed on the civil foundation; one side of the base 7 is provided with a rotating motor 6;
the upper end of the base 7 is sequentially provided with a slewing bearing 5 and a lifting device outer cylinder 3; the outer cylinder 3 of the lifting device is connected with a rotary pair with a vertically arranged rotary shaft through a rotary support 5 and a base 7;
the lifting device outer cylinder 3 is driven to rotate by a rotating motor 6;
a lifting device inner cylinder 2 is arranged in the lifting device outer cylinder 3, a moving pair is formed between the lifting device outer cylinder 3 and the lifting device inner cylinder 2, and the lifting device inner cylinder 2 can reciprocate along the vertical direction; the upper end of the lifting device inner cylinder 2 is provided with a lifting arm 1; a lifting hook 8 is arranged on the lifting arm 1;
the base 7, the slewing bearing 5, the lifting device inner cylinder 2 and the lifting device outer cylinder 3 are all hollow tubular structures; a hydraulic lifting device is arranged in the hollow inner cavity of the base 7, the slewing bearing 5, the lifting device inner cylinder 2 and the lifting device outer cylinder 3;
the hydraulic lifting device comprises a hydraulic cylinder 4; a piston rod of the hydraulic cylinder 4 is vertically arranged, and the upper end of the hydraulic cylinder is connected with the inner cylinder 2 of the lifting device and the lifting arm 1 to form a rotary pair;
during operation, the hydraulic cylinder 4 drives the lifting device inner cylinder 2 to reciprocate along the vertical direction.
The principle of the utility model is as follows:
compared with the prior art, the utility model, do not adopt the electric hoist as main hoisting device, but adopt the pneumatic cylinder as the drive arrangement of the promotion of heavy object, can improve hoisting speed, improve control accuracy.
Moreover, after the electric hoist and the steel wire rope are cancelled, the operation of the heavy object is more stable in the lifting and rotating processes, the safety accidents such as rollover are not easy to occur, the hydraulic cylinder only needs to be checked in daily maintenance, and the maintenance frequency is reduced.
Furthermore, the lifting capacity can be increased by using a hydraulic cylinder as a drive for the lifting.
As shown in fig. 2 to 5, in some embodiments, the outer wall of the inner cylinder 2 of the lifting device is provided with an inner guide column 2-1 and a plurality of inner guide lining plates 2-2;
a plurality of inner guide lining plates 2-2 are symmetrically arranged on the inner guide column 2-1; each inner guide lining plate 2-2 is contacted with the inner wall of the outer cylinder 3 of the lifting device;
the inner wall of the outer barrel 3 of the lifting device is provided with an outer guide column 3-1, a plurality of outer guide lining plates 3-2 and a plurality of connecting plates 3-4;
each connecting plate 3-4 is used for fixing two sides of the lifting device outer cylinder 3, so that the lifting device outer cylinder 3 is integrated;
a plurality of outer guide lining plates 3-2 are symmetrically arranged on the outer guide column 3-1; each outer guide liner 3-2 is in contact with the outer wall of the inner cylinder 2 of the lifting device.
In some embodiments, a plurality of eccentric guide wheels 3-3 are arranged on the inner wall of the outer cylinder 3 of the lifting device; each eccentric guide wheel 3-3 is in contact with the outer wall of the inner cylinder 2 of the lifting device.
As shown in fig. 6, in some embodiments, a rotary pair is formed between the piston rod of the hydraulic cylinder 4 and the inner cylinder 2 of the lifting device and the lifting arm 1 by means of a thrust bearing 4-5;
the upper end of a piston rod of the hydraulic cylinder 4 is sequentially connected with a lower supporting shaft 4-1 and an upper supporting shaft 4-2; the upper end of the upper support shaft 4-2 is fixedly connected with the inner ring of the thrust bearing 4-5.
In some embodiments, the thrust bearing 4-5 is externally provided with a support ring 4-3;
the support ring 4-3 is of a tubular structure, the upper end of the support ring is fixed with the lifting arm 1, and the lower end of the support ring is sealed with the upper support shaft 4-2 through an oil seal 4-4 to form sealing protection for the thrust bearing 4-5.
In some embodiments, the lift arm 1 is provided with a fuel filler line 4-6 at a location corresponding to the thrust bearing 4-5; the oil filling pipeline 4-6 is connected with a corresponding oil cup and supplies lubricating oil to the thrust bearing 4-5.
In practical application, the lower support shaft 4-1 is connected with the hydraulic cylinder 4 through a high-strength bolt, and the upper support shaft 4-2 is connected with the lower support shaft 4-1 through a bolt. The support ring 4-3 is connected with the lifting arm 1 through a bolt, so that the dismounting is convenient, and the fixing and positioning effects are achieved.
The oil seal 4-4 is arranged on the fixing ring 4-3, so that dust on the upper part is prevented from falling into the inner cylinder 2, and the dust deposition of the hydraulic cylinder 4 is prevented from being excessive, so that the operation of the equipment is prevented from being influenced.
The thrust bearing 4-5 is arranged between the upper supporting shaft and the supporting arm 1, the hydraulic cylinder 4 is jacked to drive the lower supporting shaft 4-1 to ascend, and then the lifting arm 1 is pushed to ascend through the thrust bearing 4-5.
During operation, the hydraulic cylinder 4 descends to drive the lower supporting shaft 4-1 to descend, and then the upper supporting shaft 4-2 descends through the connecting bolt to drive the lifting arm 1 to descend. Oil cups 4-6 are mounted on the lift arm 1 to provide lubrication to the thrust bearings.
When the lifting device inner cylinder 2 and the lifting arm 1 rotate, the thrust bearing 4-5 rotates along with the lifting arm 1, and the lower support shaft 4-1, the upper support shaft 4-2 and the hydraulic cylinder 4 do not rotate, so that the piston rod of the hydraulic cylinder 4 is prevented from rotating, the inner seal of the oil cylinder is protected, and leakage is prevented.
In some embodiments, a transmission gear set is provided between the rotating motor 6 and the lifting device outer cylinder 3, and the rotating motor 6 transmits power to the lifting device outer cylinder 3 via the transmission gear set to drive the lifting device outer cylinder 3 to rotate.
In some embodiments, the base 7 is fixed on the civil foundation by bolting;
the rotating motor 6 is connected with the base 7 through a high-strength bolt;
the base 7 is connected with the slewing bearing 5 through a high-strength bolt;
the outer cylinder 3 of the lifting device is connected with the slewing bearing 5 through a high-strength bolt;
the hydraulic cylinder 4 is arranged in the base 7 in a shaft lug mounting mode;
the inner cylinder 2 of the lifting device is connected with the lifting arm 1 through a high-strength bolt;
the lifting arm 1 is connected with the lifting hook 8 through a high-strength bolt.
In actual use, the rotating motor 6 drives the slewing bearing 5 to rotate, the lifting device outer cylinder 3 is fixedly connected with the slewing bearing 5 through bolts, and the lifting device outer cylinder 3 rotates along with the slewing bearing. The lift arm 1 and the lift device inner cylinder 2 rotate together with the lift device outer cylinder 3. The rotation of 360 degrees can be realized, the clockwise rotation and the anticlockwise rotation can be realized, and the rotation can be stopped at any angle.
When the hydraulic cylinder 4 is lifted, the lifting device inner cylinder 2 is driven to rise, the lifting arm 1 rises in the range of the opening of the web plate of the lifting device outer cylinder 3, and the lifting hook 8 rises along with the lifting, so that the lifted object is lifted. The hydraulic cylinder descends, the lifting arm 1 descends to drive the inner cylinder 2 of the lifting device to descend, the lifting hook 8 descends along with the inner cylinder, and the hoisted object descends.
Because the lifting action and the rotating action are both provided with proximity switches, an encoder can be further arranged, and a displacement sensor is arranged on the hydraulic cylinder 4, so that accurate positioning is realized, the repeated positioning precision is higher, and the equipment is safer and more reliable.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. The rotatable hydraulic cantilever lifting device comprises a lifting arm (1), a base (7) and a lifting hook (8); the device is characterized in that the base (7) is fixed on a civil foundation; a rotating motor (6) is arranged on one side of the base (7);
the upper end of the base (7) is sequentially provided with a slewing bearing (5) and a lifting device outer cylinder (3); the outer cylinder (3) of the lifting device forms a rotary pair connection with a vertically arranged rotary shaft through the rotary support (5) and the base (7);
the lifting device outer cylinder (3) is driven to rotate by the rotating motor (6);
a lifting device inner cylinder (2) is arranged in the lifting device outer cylinder (3), a moving pair is formed between the lifting device outer cylinder (3) and the lifting device inner cylinder (2), and the lifting device inner cylinder (2) can reciprocate along the vertical direction; the upper end of the lifting device inner cylinder (2) is provided with the lifting arm (1); the lifting arm (1) is provided with the lifting hook (8);
the base (7), the slewing bearing (5), the lifting device inner cylinder (2) and the lifting device outer cylinder (3) are all hollow tubular structures; a hydraulic lifting device is arranged in the hollow inner cavity of the base (7), the slewing bearing (5), the lifting device inner cylinder (2) and the lifting device outer cylinder (3);
the hydraulic lifting device comprises a hydraulic cylinder (4); a piston rod of the hydraulic cylinder (4) is vertically arranged, and the upper end of the hydraulic cylinder is connected with the lifting device inner cylinder (2) and the lifting arm (1) to form a rotary pair;
when the lifting device works, the hydraulic cylinder (4) drives the lifting device inner cylinder (2) to reciprocate along the vertical direction.
2. A rotatable hydraulic cantilever lifting device according to claim 1, wherein the outer wall of the inner cylinder (2) of the lifting device is provided with an inner guide column (2-1) and a plurality of inner guide lining plates (2-2);
a plurality of inner guide lining plates (2-2) are symmetrically arranged on the inner guide column (2-1); each inner guide lining plate (2-2) is contacted with the inner wall of the lifting device outer cylinder (3);
the inner wall of the outer cylinder (3) of the lifting device is provided with an outer guide column (3-1), a plurality of outer guide lining plates (3-2) and a plurality of connecting plates (3-4);
each connecting plate (3-4) is used for fixing two sides of the lifting device outer cylinder (3) so that the lifting device outer cylinder (3) is integrated;
a plurality of outer guide lining plates (3-2) are symmetrically arranged on the outer guide column (3-1); each outer guide lining plate (3-2) is contacted with the outer wall of the inner cylinder (2) of the lifting device.
3. A rotatable hydraulic jib lifting device according to claim 2, wherein the inner wall of the outer cylinder (3) of the lifting device is provided with a plurality of eccentric guide wheels (3-3); each eccentric guide wheel (3-3) is contacted with the outer wall of the inner cylinder (2) of the lifting device.
4. A rotatable hydraulic boom hoist according to claim 1, characterized in that a revolute pair is formed between the piston rod of the hydraulic cylinder (4) and the hoist inner cylinder (2) and the hoisting arm (1) by means of a thrust bearing (4-5);
the upper end of a piston rod of the hydraulic cylinder (4) is sequentially connected with a lower supporting shaft (4-1) and an upper supporting shaft (4-2); the upper end of the upper support shaft (4-2) is fixedly connected with the inner ring of the thrust bearing (4-5).
5. A rotatable hydraulic jib lifting device according to claim 4, wherein the thrust bearing (4-5) is externally provided with a support ring (4-3);
the support ring (4-3) is of a tubular structure, the upper end of the support ring is fixed with the lifting arm (1), and the lower end of the support ring is sealed with the upper support shaft (4-2) through an oil seal (4-4) to form sealing protection for the thrust bearing (4-5).
6. A rotatable hydraulic jib lifting device according to claim 4, characterized in that the lifting arm (1) is provided with a filler line (4-6) at a location corresponding to the thrust bearing (4-5); the oil filling pipelines (4-6) are connected with corresponding oil cups and provide lubricating oil for the thrust bearings (4-5).
7. The rotatable hydraulic jib lifting device according to claim 1, wherein a transmission gear set is provided between the rotating electric machine (6) and the outer cylinder (3) of the lifting device, and the rotating electric machine (6) transmits power to the outer cylinder (3) of the lifting device by means of the transmission gear set to drive the outer cylinder (3) of the lifting device to rotate.
8. A rotatable hydraulic jib lifting device according to claim 1, wherein the base (7) is fixed to the foundation of the civil engineering by means of a screw connection;
the rotating motor (6) is connected with the base (7) through a high-strength bolt;
the base (7) is connected with the slewing bearing (5) through a high-strength bolt;
the lifting device outer cylinder (3) is connected with the slewing bearing (5) through a high-strength bolt;
the hydraulic cylinder (4) is arranged in the base (7) in a shaft lug mounting mode;
the lifting device inner cylinder (2) is connected with the lifting arm (1) through a high-strength bolt;
the lifting arm (1) is connected with the lifting hook (8) through a high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020340410.1U CN211769915U (en) | 2020-03-18 | 2020-03-18 | Rotatable hydraulic type cantilever lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020340410.1U CN211769915U (en) | 2020-03-18 | 2020-03-18 | Rotatable hydraulic type cantilever lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211769915U true CN211769915U (en) | 2020-10-27 |
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ID=72930864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020340410.1U Active CN211769915U (en) | 2020-03-18 | 2020-03-18 | Rotatable hydraulic type cantilever lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211769915U (en) |
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2020
- 2020-03-18 CN CN202020340410.1U patent/CN211769915U/en active Active
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