CN111232855A - Rotatable hydraulic type cantilever lifting device - Google Patents

Rotatable hydraulic type cantilever lifting device Download PDF

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Publication number
CN111232855A
CN111232855A CN202010190229.1A CN202010190229A CN111232855A CN 111232855 A CN111232855 A CN 111232855A CN 202010190229 A CN202010190229 A CN 202010190229A CN 111232855 A CN111232855 A CN 111232855A
Authority
CN
China
Prior art keywords
lifting device
cylinder
lifting
base
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010190229.1A
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Chinese (zh)
Inventor
汪昌润
郭家奇
赵春禾
宋涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Heli Hydraulic Electromechanical Co ltd
Original Assignee
Shanghai Heli Hydraulic Electromechanical Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Heli Hydraulic Electromechanical Co ltd filed Critical Shanghai Heli Hydraulic Electromechanical Co ltd
Priority to CN202010190229.1A priority Critical patent/CN111232855A/en
Publication of CN111232855A publication Critical patent/CN111232855A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
    • B66C23/163—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements where only part of the column rotates, i.e. at least the bottom part is fixed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/84—Slewing gear
    • B66C23/86—Slewing gear hydraulically actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention discloses a rotatable hydraulic cantilever lifting device, which comprises a lifting arm, a base and a lifting hook, wherein the lifting arm is connected with the base through 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 invention can accurately control the lifting position, speed and rotation angle, can realize lifting and rotation with high precision, more fully utilizes the field and can play a role in narrow space.

Description

Rotatable hydraulic type cantilever lifting device
Technical Field
The invention relates to the technical field of heavy-load hoisting equipment manufacturing, in particular to a rotatable hydraulic 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.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a rotatable hydraulic boom raising apparatus, which can precisely control a raising position, a speed, and a rotation angle, can precisely raise and rotate, can more fully utilize a field, and can function in a narrow space.
In order to achieve the purpose, the invention discloses a rotatable hydraulic cantilever lifting device which comprises a lifting arm, a base and a 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 invention has the beneficial effects that:
1. the application of the invention can enable the cantilever lifting device to more accurately control the lifting position, speed and rotation angle.
2. The application of the invention can lead the cantilever lifting device to realize lifting and rotating, fully utilize the field and play an important role in a narrow space.
3. The invention realizes lifting by using a hydraulic system, and has stable lifting process and large lifting capacity.
4. The application of the invention can lead the structure of the cantilever lifting device to be more stable, the operation to be more efficient and the more rapid lifting to be realized.
5. The application of the invention ensures that the cantilever lifting device has simpler structure, is not easy to break down and 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 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 is a schematic diagram of the outer wall of the inner cylinder of the lifting device according to an embodiment of the present invention.
Fig. 3 is a schematic view showing a connection structure between the inner guide post and the inner guide liner plate according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the inner wall of the outer cylinder of the lifting device in one embodiment of the 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 in one embodiment of the invention.
Fig. 6 shows a schematic view of the connection between the piston rod and the inner cylinder and the lifting arm of the lifting device according to 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 invention is as follows:
compared with the prior art, the invention does not adopt the electric hoist as a main lifting device, but adopts the hydraulic cylinder as a driving device for lifting the heavy object, thereby improving the lifting speed and the 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 detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept 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.
CN202010190229.1A 2020-03-18 2020-03-18 Rotatable hydraulic type cantilever lifting device Pending CN111232855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010190229.1A CN111232855A (en) 2020-03-18 2020-03-18 Rotatable hydraulic type cantilever lifting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010190229.1A CN111232855A (en) 2020-03-18 2020-03-18 Rotatable hydraulic type cantilever lifting device

Publications (1)

Publication Number Publication Date
CN111232855A true CN111232855A (en) 2020-06-05

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ID=70870699

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010190229.1A Pending CN111232855A (en) 2020-03-18 2020-03-18 Rotatable hydraulic type cantilever lifting device

Country Status (1)

Country Link
CN (1) CN111232855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114414074A (en) * 2022-04-01 2022-04-29 深圳市勘察研究院有限公司 Cantilever type intelligent temperature measurement and detection device for vertical shaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114414074A (en) * 2022-04-01 2022-04-29 深圳市勘察研究院有限公司 Cantilever type intelligent temperature measurement and detection device for vertical shaft
CN114414074B (en) * 2022-04-01 2022-07-08 深圳市勘察研究院有限公司 Cantilever type intelligent temperature measurement and detection device for vertical shaft

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