CN221521863U - Cantilever crane - Google Patents

Abstract

The utility model relates to the technical field of cranes, in particular to a cantilever crane device which comprises a lifting mechanism, a rotating mechanism, a sliding mechanism and a hoisting mechanism which are sequentially connected, wherein the rotating mechanism is arranged at the top of the lifting mechanism, the end part of the sliding mechanism is connected with the rotating mechanism, and the hoisting mechanism is connected with the sliding mechanism; the hoisting mechanism comprises a hanging assembly, a clamping assembly and a mounting frame, wherein the mounting frame is connected with the sliding mechanism, and the hanging assembly and the clamping assembly are movably arranged on the mounting frame. During operation, this cantilever hoisting apparatus accessible clamping assembly carries out the centre gripping to hoist and mount goods, ensures the stability when the goods transportation, has promoted the security of hoist and mount work.

Description

Cantilever crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a cantilever crane device.

Background

With the development of technology, the lifting device is widely applied in engineering, and faces more complex and changeable use scenes. The overhead hoist is commonly used in construction sites of constructional engineering: such as carpenters, ironworks, water electricians, mudworks, painters, bricklayers and the like, so that the materials need to be hoisted very frequently during the penetrating construction, and the type of the hoisted objects is complex and changeable. The most common lifting device at the construction site is a tower crane, but the tower crane has higher cost and is difficult to meet the lifting of the sporadic materials; if the automobile crane is added, the characteristics of higher economic cost and poor flexibility are also faced, so the cantilever crane is generated at each construction site. But different construction sites have different construction conditions and different environments, and the general cantilever crane is difficult to meet the requirements of flexible and convenient construction sites.

The Chinese patent discloses a cantilever crane, including stand, davit, along the travelling car of davit removal and install the electric block on the travelling car, the davit is telescopic structure, including cantilever and balanced arm, the one end rotation of cantilever is installed on the stand, balanced arm slidable mounting is on the cantilever and along the length direction removal of cantilever, is equipped with the second drive assembly that the drive balanced arm removed between travelling car and the balanced arm, makes balanced arm and travelling car synchronous movement and the direction of movement opposite, still is equipped with the locking device who is used for locking the davit position on the stand. According to the scheme, the rotation angle of the cantilever is locked through the locking device on the upright post, the collision between the heavy object and surrounding objects is effectively prevented, and the centrifugal effect generated when the suspension arm rotates is reduced through the telescopic suspension arm, so that the locking is safer and more stable. However, the cantilever crane can only hoist the goods through the telescopic hook lock, and the goods are easy to shake due to centrifugal force during transferring, so that a hoisting device capable of keeping the hoisted goods fixed during transferring is needed.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provides a cantilever lifting device which can clamp goods in lifting and transporting to avoid shaking during moving.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The cantilever lifting device comprises a lifting mechanism, a rotating mechanism, a sliding mechanism and a lifting mechanism which are sequentially connected, wherein the rotating mechanism is arranged at the top of the lifting mechanism, the end part of the sliding mechanism is connected with the rotating mechanism, and the lifting mechanism is connected with the sliding mechanism; the hoisting mechanism comprises a hanging assembly, a clamping assembly and a mounting frame, wherein the mounting frame is connected with the sliding mechanism, the hanging assembly and the clamping assembly are movably arranged on the mounting frame, and the clamping assembly is located below the hanging assembly.

Through this kind of setting method, when carrying out hoist and mount work, elevating system rises to suitable height earlier, and the tilting mechanism work makes the sliding mechanism be located the goods top, and the sliding mechanism work drives the mounting bracket and makes hoist and mount mechanism remove directly over the goods, hangs the subassembly work, and the goods with the below is vertical to be lifted to clamping assembly department, and clamping assembly work is tight with the goods, and then the sliding mechanism cooperates the work with the tilting mechanism, transports the goods directly over the assigned position, and hoist and mount mechanism puts down the goods again, accomplishes once and hoist and mount.

Preferably, the suspension assembly comprises a roller, a first motor and a hanging rope, two mounting plates are oppositely arranged on two sides of the mounting frame, the roller is arranged between the two mounting plates and is rotationally connected with the mounting plates, an output shaft of the first motor is connected with the roller, and the hanging rope is wound on the roller.

Through this kind of setting mode, when hanging the subassembly during operation, first motor drive roller bearing is rotatory, will twine the suspension cable on the roller bearing and descend, wait that the suspension cable is connected with the goods after, first motor drive roller bearing counter-rotation again, makes the suspension cable twine again on the roller bearing, hangs the goods.

Preferably, the clamping assembly comprises two symmetrically arranged clamping parts, each clamping part comprises an air cylinder and a clamping plate, each air cylinder penetrates through the mounting plate and is connected with the corresponding clamping plate, and the clamping plates in the two clamping parts can move oppositely or back to back under the driving of the two air cylinders.

Through this kind of setting mode, when the goods is hung between the cable and is lifted to the clamping part, the cylinder work makes the grip block on both sides release simultaneously, and the goods centre gripping that will be located in the centre of the grip block is firm to prevent that the goods from rocking.

Preferably, the lifting mechanism comprises a main cylinder, a push rod and a first driving assembly, wherein the main cylinder is hollow, the first driving assembly and the push rod are both arranged in the main cylinder, the push rod is movably connected with the main cylinder through the first driving assembly, and the end part of the push rod is connected with the rotating mechanism.

Through this kind of setting scheme, when the height of steering mechanism and glide machanism need be adjusted, first drive assembly can drive the ejector pin and rise or move down in the main section of thick bamboo to make the change of the height of steering mechanism and glide machanism, avoid hindering the things of steering mechanism or glide machanism route in the goods transfer process.

Further, the first driving assembly comprises a hydraulic cylinder and a piston column, the hydraulic cylinder is fixedly connected with the main cylinder, the piston column is movably connected with the hydraulic cylinder, and the piston column is fixedly connected with the ejector rod. The hydraulic cylinder is matched with the piston column to drive the ejector rod to move up and down.

Preferably, the rotating mechanism comprises a shell, a second motor, a transmission gear set and a first movable seat, wherein the shell is fixedly arranged at the top of the ejector rod, the first movable seat is arranged outside the shell, the transmission gear set at least comprises a first gear and a second gear, the first gear is rotatably arranged on the first movable seat, the first gear is fixedly connected with the end part of the sliding mechanism, the second gear is arranged in the shell and is connected with the second motor, and the first gear is meshed with the second gear.

Through the arrangement mode, the second motor can drive the second gear of the transmission gear set to rotate, so that the first gear meshed with the second gear rotates to drive the sliding mechanism to rotate, and the sliding mechanism and the lifting mechanism can move in a plane.

Preferably, the transmission gear set further comprises a third gear and a fourth gear, the second gear and the third gear are straight-tooth gears, the pitch circle diameter of the second gear is smaller than that of the first gear, the fourth gear is an oblique-tooth gear, the fourth gear is meshed with the second gear and the third gear respectively, and the third gear is meshed with the first gear.

Through this kind of setting method, third gear and fourth gear can be with the output torque transmission of second gear to first gear department, and drive gear train is the reduction reinforcement gear train, can export higher moment of torsion, when hoist and mount mechanism hoist and mount the great goods of quality, drive gear train can enlarge the output moment of torsion of second motor to guarantee that slide mechanism and hoist and mount mechanism can rotate smoothly.

Preferably, the sliding mechanism comprises a beam frame, a second driving assembly and a pulley, wherein the end part of the beam frame is rotationally connected with the rotating mechanism, the pulley is in sliding connection with the beam frame, the second driving assembly can drive the pulley to move on the beam frame, and the mounting frame is fixedly connected with the pulley.

Through this kind of setting method, the second drive assembly can drive the coaster and follow the roof beam frame and remove, cooperates slewing mechanism's steering action, makes hoist mechanism have bigger movable range on the plane, more is favorable to hoist and mount and the transportation of goods.

Preferably, the beam frame comprises a sliding rail and an inclined rod, wherein the sliding rail is fixedly connected with one end of the inclined rod, which is far away from the rotating mechanism, and forms a certain included angle with the inclined rod, a plurality of reinforcing columns are further arranged between the sliding rail and the inclined rod, one end of the sliding rail, which is close to the rotating mechanism, is fixedly connected with the first gear, a second movable seat is further arranged on the shell, and one end of the inclined rod, which is close to the rotating mechanism, is rotationally connected with the second movable seat.

Through this kind of setting up mode, the cooperation is strengthened and is formed firm triangle-shaped structure between slide rail and the diagonal bar, has strengthened the structural stability of roof beam structure greatly, and slide rail and coaster constitute the slide rail transmission pair, have improved the stability of coaster motion on the roof beam structure, and first gear drive slide rail rotates to drive the diagonal bar that rotates with the second movable seat and be connected jointly.

Preferably, the second driving assembly comprises a third motor and a screw rod, the screw rod is connected with an output shaft of the third motor, a threaded hole is formed in the pulley, and the pulley and the screw rod form a screw thread transmission pair.

Through this kind of setting mode, third motor accessible drive lead screw corotation or reversal to the displacement direction of drive coaster on the slide rail, the accurate displacement of coaster on the slide rail is drawn to lead screw thread drive pair can be ensured, thereby improves the loose stability of goods.

Preferably, the bottom of the lifting mechanism is also provided with a mounting seat, and the mounting seat is fixedly connected with the ground.

Preferably, the mounting seat is further provided with a plurality of through holes, and the mounting seat is fixedly connected with the ground through expansion screws.

Through this kind of setting method, can ensure that the installation of cantilever crane is firm, avoid cantilever crane to take place to empty when transporting the freight of great quality.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Through the centre gripping of clamping assembly to hoist and mount goods, guaranteed when slewing mechanism during operation, the goods receives the centre gripping and can not rock because of centrifugal force effect to avoid the goods slope or bump with other article, promoted the security of hoist and mount work.

(2) The structure of each part is greatly simplified, the cost of the cantilever crane is saved, and the maintenance of the device is facilitated.

(3) By arranging the transmission gear set for reducing and boosting, the cantilever crane can still output enough power when facing to cargoes with larger mass, thereby ensuring the transportation of cargoes.

Drawings

FIG. 1 is a schematic view of the general construction of a jib loading boom apparatus according to the present utility model;

FIG. 2 is a schematic view of a hoisting mechanism of a cantilever crane according to the present utility model;

FIG. 3 is a schematic view of a lifting mechanism of a cantilever crane according to the present utility model;

FIG. 4 is a schematic view of a rotary mechanism of a jib crane apparatus according to the present utility model;

FIG. 5 is a schematic diagram of a slide mechanism of a cantilever crane according to the present utility model;

fig. 6 is a schematic view of a beam structure of a cantilever crane according to the present utility model.

The graphic indicia are illustrated as follows:

1. A lifting mechanism; 11. a main barrel; 12. a push rod; 13. a first drive assembly; 131. a hydraulic cylinder; 132. a piston column; 14. a mounting base; 15. an expansion screw; 2. a rotating mechanism; 21. a housing; 22. a second motor; 23. a drive gear set; 231. a first gear; 232. a second gear; 233. a third gear; 234. a fourth gear; 24. a first movable seat; 26. a second movable seat; 3. a sliding mechanism; 31. a beam frame; 311. a slide rail; 312. a diagonal rod; 313. a reinforcing column; 32. a second drive assembly; 321. a third motor; 322. a screw rod; 33. a pulley; 4. a hoisting mechanism; 41. a suspension assembly; 411. a roller; 412. a first motor; 413. hanging rope; 42. a clamping assembly; 421. a clamping part; 422. a cylinder; 423. a clamping plate; 43. a mounting frame; 431. and (3) mounting a plate.

Detailed Description

The utility model is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

Example 1

As shown in fig. 1 to 3, a first embodiment of a cantilever crane according to the present utility model includes a lifting mechanism 1, a rotating mechanism 2, a sliding mechanism 3 and a hoisting mechanism 4 connected in sequence, wherein the rotating mechanism 2 is arranged at the top of the lifting mechanism 1, the end of the sliding mechanism 3 is connected with the rotating mechanism 2, and the hoisting mechanism 4 is connected with the sliding mechanism 3; the hoisting mechanism 4 comprises a hanging component 41, a clamping component 42 and a mounting frame 43, wherein the mounting frame 43 is connected with the sliding mechanism 3, the hanging component 41 and the clamping component 42 are movably arranged on the mounting frame 43, and the clamping component 42 is positioned below the hanging component 41.

Through this kind of setting, when carrying out hoist and mount work, elevating system 1 rises to suitable height earlier, and slewing mechanism 2 work makes glide machanism 3 be located the goods top, and glide machanism 3 work makes hoist and mount mechanism 4 be located the goods directly over through the mounting bracket, hangs the subassembly 41 work, and the goods of below is vertical to hoist to clamping assembly 42 department, and clamping assembly 42 work is tight with the goods, and then glide machanism 3 and slewing mechanism 2 cooperation work transport the goods directly over the assigned position, hoist and mount mechanism 4 puts down the goods again, accomplishes once hoist and mount.

As an embodiment of the present utility model, the suspension assembly 41 includes a roller 411, a first motor 412 and a hanging rope 413, two mounting plates 431 are disposed opposite to each other on two sides of the mounting frame, the roller 411 is disposed between the two mounting plates 431 and is rotatably connected to the mounting plates 431, an output shaft of the first motor 412 is connected to the roller 411, and the hanging rope 413 is wound on the roller 411.

Through this arrangement, when the suspension assembly 41 works, the first motor 412 drives the roller 411 to rotate, the hanging rope 413 wound on the roller 411 is lowered, and after the hanging rope 413 is connected with the cargo, the first motor 412 drives the roller 411 to rotate reversely, so that the hanging rope 413 is wound on the roller 411 again, and the cargo is lifted.

As an embodiment of the present utility model, the clamping assembly 42 includes two symmetrically arranged clamping portions 421, the clamping portions 421 include an air cylinder 422 and a clamping plate 423, the air cylinder 422 is disposed through the mounting plate 431 and connected to the clamping plate 423, and the clamping plates 423 in the two clamping portions 421 can move in opposite directions or back directions under the driving of the two air cylinders 422.

Through this kind of setting scheme, when the goods back of body hanging rope 413 lifts to between the clamping part 421, cylinder 422 work makes the grip block 423 on both sides release simultaneously, and the goods centre gripping that will be located in the centre of grip block 423 is firm to prevent that the goods from rocking.

As an embodiment of the present utility model, the lifting mechanism 1 includes a main cylinder 11, a push rod 12 and a first driving component 13, the main cylinder 11 is hollow, the first driving component 13 and the push rod 12 are both disposed in the main cylinder 11, the push rod 12 is movably connected with the main cylinder 11 through the first driving component 13, and an end portion of the push rod 12 is connected with the rotating mechanism 2.

By this arrangement, when the height of the steering mechanism and the sliding mechanism 3 needs to be adjusted, the first driving component 13 can drive the ejector rod 12 to ascend or descend, so that the heights of the steering mechanism 2 and the sliding mechanism 3 are changed, and things which obstruct the path of the steering mechanism 2 or the sliding mechanism 3 in the cargo transferring process are avoided.

As an embodiment of the present utility model, the first driving assembly 13 includes a hydraulic cylinder 131 and a piston post 132, the hydraulic cylinder 131 is fixedly connected with the main cylinder 11, the piston post 132 is movably connected with the hydraulic cylinder 131, and the piston post 132 is also fixedly connected with the ejector rod 12. The hydraulic cylinder 131 and the piston column 132 cooperate to drive the ejector rod 12 to move up and down.

As an embodiment of the present utility model, the bottom of the lifting mechanism 1 is further provided with a mounting seat 14, and the mounting seat 14 is fixedly connected with the ground. The mounting seat 14 is also provided with a plurality of through holes, and the mounting seat 14 is fixedly connected with the ground through expansion screws 15.

Through this kind of setting method, can ensure that the installation of cantilever crane is firm, avoid cantilever crane to take place to empty when transporting the freight of great quality.

Example 2

A second embodiment of a jib loading boom assembly according to the utility model is shown in fig. 4, which is similar to embodiment 1, with the difference that the structure of the turning mechanism 2 is different.

As an embodiment of the present utility model, the rotating mechanism 2 includes a housing 21, a second motor 22, a driving gear set 23 and a first movable seat 24, the housing 21 is fixedly installed on the top of the ejector rod 12, the first movable seat 24 is installed on the outer side of the housing 21, the driving gear set 23 includes at least a first gear 231 and a second gear 232, the first gear 231 is rotatably installed on the first movable seat 24, the first gear 231 is fixedly connected with an end of the sliding mechanism 3, the second gear 232 is installed in the housing 21 and connected with the second motor 22, and the first gear 231 is meshed with the second gear 232.

By this arrangement, the second motor 22 can drive the second gear 232 of the transmission gear set 23 to rotate, so that the first gear 231 meshed with the second gear 232 rotates to drive the sliding mechanism 3 to rotate, and the sliding mechanism 3 and the lifting mechanism 4 can move in a plane.

As an embodiment of the present utility model, the driving gear set 23 further includes a third gear 233 and a fourth gear 234, the second gear 232 and the third gear 233 are straight-tooth gears, the pitch diameter of the second gear 232 is smaller than the pitch diameter of the first gear 233, the fourth gear 234 is a helical gear, the fourth gear 234 is meshed with the second gear 232 and the third gear 233 respectively, and the third gear 233 is meshed with the first gear 231.

Through the arrangement mode, the third gear 233 and the fourth gear 234 can transmit the output torque of the second gear 232 to the first gear 231, the transmission gear set 23 is a speed reduction and reinforcement gear set, higher torque can be output, and when the hoisting mechanism 4 is used for hoisting cargoes with larger mass, the transmission gear set 23 can amplify the output torque of the second motor 22, so that smooth rotation of the sliding mechanism 3 and the hoisting mechanism 4 is ensured.

Example 3

Fig. 5 and 6 show a third embodiment of a cantilever crane according to the present utility model, which is similar to embodiment 2, except that the structure of the sliding mechanism 3 is different.

As an embodiment of the present utility model, the sliding mechanism 3 includes a beam 31, a second driving assembly 32 and a pulley 33, the end of the beam 31 is rotatably connected with the rotating mechanism 2, the pulley 33 is slidably connected with the beam 31, the second driving assembly 32 can drive the pulley 33 to move on the beam 31, and the mounting frame 43 is fixedly connected with the pulley 33.

Through this kind of setting, the second drive assembly 32 can drive coaster 33 along roof beam structure 31 removal, cooperates the steering action of slewing mechanism 2, makes hoist mechanism 4 have bigger movable range on the plane, more is favorable to hoist and mount and the transportation of goods.

As an embodiment of the present utility model, the beam 31 includes a sliding rail 311 and a diagonal rod 312, the sliding rail 311 and one end of the diagonal rod 312 far away from the rotating mechanism 2 are fixedly connected and form a certain included angle, a plurality of reinforcing columns 313 are further disposed between the sliding rail 311 and the diagonal rod 312, one end of the sliding rail 311 near the rotating mechanism 2 is fixedly connected with the first gear 231, a second movable seat 26 is further disposed on the housing 21, and one end of the diagonal rod near the rotating mechanism 2 is rotatably connected with the second movable seat 26.

Through this kind of setting means, cooperation between slide rail 311 and the diagonal bar 312 is strengthened and is formed firm triangle-shaped structure, has strengthened the structural stability of roof beam structure 31 greatly, and slide rail 311 constitutes slide rail 311 transmission pair with coaster 33, has improved the stability that coaster 33 moved on roof beam structure 31, and first gear 231 drives slide rail 311 and rotates to drive the diagonal bar 312 that is connected with the rotation of second movable seat 26 and rotate jointly.

As an embodiment of the present utility model, the second driving assembly 32 includes a third motor 321 and a screw rod 322, the screw rod 322 is connected to an output shaft of the third motor 321, a threaded hole is formed in the pulley 33, and the pulley 33 and the screw rod 322 form a screw thread transmission pair.

Through this kind of setting scheme, third motor 321 accessible drive lead screw 322 corotation or reversal to the displacement direction of drive coaster 33 on slide rail 311, the accurate displacement of coaster 33 on slide rail 311 can be ensured to lead screw 322 screw drive pair, thereby improves the loose stability of goods.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The cantilever lifting device comprises a lifting mechanism (1), a rotating mechanism (2), a sliding mechanism (3) and a lifting mechanism (4) which are sequentially connected, wherein the rotating mechanism (2) is arranged at the top of the lifting mechanism (1), the end part of the sliding mechanism (3) is connected with the rotating mechanism (2), and the lifting mechanism (4) is connected with the sliding mechanism (3); the lifting mechanism is characterized in that the lifting mechanism (4) comprises a hanging component (41), a clamping component (42) and a mounting frame (43), the mounting frame (43) is connected with the sliding mechanism (3), the hanging component (41) and the clamping component (42) are movably arranged on the mounting frame (43), and the clamping component (42) is located below the hanging component (41).

2. The cantilever crane device according to claim 1, wherein the suspension assembly (41) comprises a roller (411), a first motor (412) and a hanging rope (413), two mounting plates (431) are oppositely arranged on two sides of the mounting frame (43), the roller (411) is arranged between the two mounting plates (431) and is rotationally connected with the mounting plates (431), an output shaft of the first motor (412) is connected with the roller (411), and the hanging rope (413) is wound on the roller (411).

3. The cantilever crane according to claim 2, wherein the clamping assembly (42) comprises two symmetrically arranged clamping portions (421), the clamping portions (421) comprise an air cylinder (422) and a clamping plate (423), the air cylinder (422) is arranged on the mounting plate (431) in a penetrating manner and is connected with the clamping plate (423), and the clamping plates (423) in the two clamping portions (421) can move oppositely or back under the driving of the two air cylinders (422).

4. The cantilever crane device according to claim 1, wherein the lifting mechanism (1) comprises a main cylinder (11), a push rod (12) and a first driving component (13), the main cylinder (11) is arranged in a hollow mode, the first driving component (13) and the push rod (12) are arranged in the main cylinder (11), the push rod (12) is movably connected with the main cylinder (11) through the first driving component (13), and the end portion of the push rod (12) is connected with the rotating mechanism (2).

5. The cantilever crane according to any one of claims 1 to 4, wherein the rotating mechanism (2) comprises a housing (21), a second motor (22), a transmission gear set (23) and a first movable seat (24), the housing (21) is fixedly arranged at the top of the ejector rod (12), the first movable seat (24) is arranged at the outer side of the housing (21), the transmission gear set (23) at least comprises a first gear (231) and a second gear (232), the first gear (231) is rotatably arranged on the first movable seat (24), the first gear (231) is fixedly connected with the end part of the sliding mechanism (3), the second gear (232) is arranged in the housing (21) and is connected with the second motor (22), and the first gear (231) is meshed with the second gear (232).

6. The cantilever crane according to claim 5, wherein the transmission gear set (23) further comprises a third gear (233) and a fourth gear (234), the second gear (232) and the third gear (233) are straight-tooth gears, the pitch diameter of the second gear (232) is smaller than the pitch diameter of the first gear (231), the fourth gear (234) is a helical gear, the fourth gear (234) is meshed with the second gear (232) and the third gear (233) respectively, and the third gear (233) is further meshed with the first gear (231).

7. Cantilever crane according to claim 6, characterized in that the sliding mechanism (3) comprises a beam (31), a second drive assembly (32) and a trolley (33), the end of the beam (31) is rotationally connected to the rotating mechanism (2), the trolley (33) is slidingly connected to the beam (31), the second drive assembly (32) is adapted to drive the trolley (33) to move on the beam (31), and the mounting frame (43) is fixedly connected to the trolley (33).

8. The cantilever crane device according to claim 7, wherein the beam frame (31) comprises a sliding rail (311) and an inclined rod (312), the sliding rail (311) and the inclined rod (312) are fixedly connected with one end of the sliding rail (311) far away from the rotating mechanism (2) and form a certain included angle, a plurality of reinforcing columns (313) are further arranged between the sliding rail (311) and the inclined rod (312), one end of the sliding rail (311) close to the rotating mechanism (2) is fixedly connected with the first gear (231), a second movable seat (26) is further arranged on the shell (21), and one end of the inclined rod (312) close to the rotating mechanism (2) is rotatably connected with the second movable seat (26).

9. The cantilever crane according to claim 8, wherein the second driving assembly (32) comprises a third motor (321) and a screw (322), the pulley (33) is provided with a threaded hole, and the pulley (33) and the screw (322) form a screw thread transmission pair.

10. Cantilever crane according to claim 1, characterized in that the bottom of the lifting mechanism (1) is also provided with a mounting seat (14), the mounting seat (14) being fixedly connected with the ground.