CN110950246B

CN110950246B - Remotely controllable crane

Info

Publication number: CN110950246B
Application number: CN201911328585.9A
Authority: CN
Inventors: 陈远彪
Original assignee: Shandong Qilide Heavy Industry Group Co ltd
Current assignee: SHANDONG QILIDE HEAVY INDUSTRY GROUP Co.,Ltd.
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-01-01
Anticipated expiration: 2039-12-20
Also published as: CN110950246A

Abstract

The invention discloses a crane capable of being remotely controlled, which comprises a shell, wherein a supporting plate is fixedly arranged at the left end of the shell close to the upper side, a rotating assembly is arranged at the front end of the supporting plate, the rotating assembly comprises a first transmission shaft rotationally connected with the front end of the supporting plate, an electromagnet for hoisting is adopted, when the electromagnet for hoisting is electrified and has the same magnetism as a fifth sliding block, the crane can be controlled to release a steel wire cable downwards, when the electromagnet for hoisting is electrified and has the opposite magnetism as the fifth sliding block, the crane can be controlled to lift goods fixed on the steel wire cable, a first gear is adopted, when the rotating first gear is meshed with a toothed part of a supporting frame, the shell can be driven to rotate, so that the goods can be rotated, personnel are not required to enter a cab in the whole process, a rotating wheel is adopted, when the rotating speed of the rotating wheel is too high, the third sliding block can be slidably connected with a second sliding groove, therefore, the speed is reduced under the limitation of the friction wheel, and the protection of the crane and personnel is realized.

Description

Remotely controllable crane

Technical Field

The invention relates to the technical field of cranes, in particular to a crane capable of being remotely controlled.

Background

The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range, and is widely used in the fields of building industry, manufacturing industry and the like at present, but most of the existing cranes need an operator to enter a cab to operate the crane, but long-time mechanical vibration and operation can cause strong operation fatigue of the operator, the cab located beside the crane for a long time also has certain danger, and many of the existing cranes have no protection function.

Disclosure of Invention

The object of the present invention is to provide a remotely operable crane which overcomes the above-mentioned drawbacks of the prior art.

The crane capable of being remotely controlled comprises a shell, wherein a supporting plate is fixedly arranged at the left end of the shell close to the upper side, a rotating assembly is arranged at the front end of the supporting plate, the rotating assembly comprises a first transmission shaft rotatably connected with the front end of the supporting plate, a reel fixedly arranged on the first transmission shaft, and a steel wire cable wound on the reel, a working cavity is arranged in the shell, a protection assembly is arranged on the inner wall of the rear side of the working cavity, a rotating cavity which is positioned at the lower side of the working cavity and is open at the lower side is arranged in the shell, a hoisting mechanism is arranged on the inner wall of the upper side of the rotating cavity, the hoisting mechanism comprises a second transmission shaft rotatably connected with the inner wall of the upper side of the rotating cavity and extends upwards into the working cavity, a first gear fixedly arranged at the tail end of the lower end of the second transmission shaft, And the supporting frame is rotationally connected with the supporting shaft and is contacted with the ground, and the toothed part of the supporting frame is meshed and connected with the first gear.

Preferably, the motor has set firmly on the working chamber downside inner wall, motor upper end power is connected with the third transmission shaft, the working chamber rear side inner wall rotates and is connected with the fourth transmission shaft, the driving pulley has set firmly on the fourth transmission shaft, the working chamber rear side inner wall rotates and is connected with the fifth transmission shaft, the driving pulley has set firmly on the fifth transmission shaft, the driving pulley with be connected with the belt between the driving pulley.

Wherein the rotating assembly further comprises a second gear fixedly arranged on the third transmission shaft, a rotation control shell is fixedly arranged on the inner wall of the front side of the working cavity, a rotation control cavity is arranged in the rotation control shell, an electromagnet for rotation is fixedly arranged on the inner wall of the upper side of the rotation control cavity, a first sliding block capable of sliding up and down is arranged on the inner wall of the rotation control cavity, a first spring is connected between the first sliding block and the electromagnet for rotation, a first sliding groove is arranged on the inner wall of the left side of the working cavity, a second sliding block capable of sliding up and down is arranged on the first sliding groove, the second sliding block is fixedly connected with the first sliding block, a sixth transmission shaft is rotatably connected at the lower end of the second sliding block close to the left side, and a third gear which can be in meshed connection with the second gear is fixedly arranged on the sixth transmission shaft, and a fourth gear which can be in meshed connection with the third gear is fixedly arranged on the second transmission shaft positioned in the working cavity.

Wherein, the protection subassembly including set firmly in the terminal runner of fifth transmission shaft front end, annular array distributes and is equipped with six protection chambeies in the runner, locates but protection intracavity and radial sliding's third slider, the working chamber front side inner wall rotates and is connected with the very big friction pulley of frictional force, annular array distributes and is equipped with six second spouts in the friction pulley, just the second spout can with third slider sliding connection.

Wherein, the hoisting mechanism also comprises a seventh transmission shaft in spline connection with the third transmission shaft, an adjusting cavity is arranged in the third transmission shaft, a second spring is connected between the inner wall at the lower side of the adjusting cavity and the seventh transmission shaft, a first bevel gear is fixedly arranged on the seventh transmission shaft, a second bevel gear positioned at the upper side of the first bevel gear is fixedly arranged on the seventh transmission shaft, a hoisting control shell positioned at the right side of the motor is fixedly arranged on the inner wall at the lower side of the working cavity, a hoisting control cavity is arranged in the hoisting control shell, a electromagnet for hoisting is fixedly arranged on the inner wall at the lower side of the hoisting control cavity, a fixed support capable of sliding up and down is arranged on the inner wall of the hoisting control cavity, the fixed support is rotationally connected with the seventh transmission shaft, a first butt rod is fixedly arranged at the upper end of the fixed support, and a connecting rod is, a horizontal bracket extending leftwards is fixedly arranged at the position, close to the upper side, of the left end of the connecting rod, a second butting rod is fixedly arranged at the lower end of the horizontal bracket, a butting block capable of butting against the connecting rod is fixedly arranged on the inner wall of the upper side of the working cavity, a third sliding groove is formed in the inner wall of the upper side of the working cavity, a fourth sliding block capable of sliding leftwards and rightwards is arranged on the third sliding groove, a third spring is connected between the fourth sliding block and the butting block, a fixed block is fixedly arranged at the tail end of the lower end of the fourth sliding block, butting grooves are symmetrically formed in the upper end and the lower end of the fixed block, the upper butting groove can be in sliding connection with the horizontal bracket, the lower butting groove can be butted against the first butting rod, a toothed fixed block is fixedly arranged at the left end of the fixed block, a fifth gear capable of being meshed with the toothed fixed block is fixedly arranged on the fourth transmission shaft, and a, and the third bevel gear is in meshed connection with the first bevel gear, a through hole is formed in the inner wall of the left side of the working cavity and communicated with the outside, a sixth gear located on the rear side of the auxiliary belt wheel is fixedly arranged on the fifth transmission shaft, and a seventh gear located on the rear side of the reel and in meshed connection with the sixth gear through the through hole is fixedly arranged on the first transmission shaft.

The invention has the beneficial effects that: the crane is controlled to release the steel wire cable downwards when the lifting electromagnet is electrified and has the magnetism the same as that of the fifth sliding block, the crane is controlled to lift the goods fixed on the steel wire cable when the lifting electromagnet is electrified and has the magnetism opposite to that of the fifth sliding block, the first gear is adopted, the shell can be driven to rotate when the rotating first gear is meshed with the toothed part of the supporting frame, so that the goods can be rotated, personnel do not need to enter a cab to operate in the whole process, the rotating wheel is adopted, and the third sliding block is connected with the second sliding groove in a sliding mode when the rotating speed of the rotating wheel is too high, so that the speed is reduced under the limitation of the friction wheel, and the crane and the personnel are protected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the overall construction of a remotely operable crane of the present invention;

FIG. 2 is a schematic enlarged view of the structure of "A" of FIG. 1;

FIG. 3 is a schematic enlarged view of the structure of "B" of FIG. 1;

FIG. 4 is a schematic view of the structure in the "C-C" direction of the orientation of FIG. 1;

fig. 5 is a schematic view of the structure in the direction "D-D" of fig. 2.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1 to 5, a remotely controllable crane according to an embodiment of the present invention includes a housing 11, a supporting plate 56 is fixedly disposed at a left end of the housing 11 near an upper side, a rotating assembly 901 is disposed at a front end of the supporting plate 56, the rotating assembly 901 includes a first transmission shaft 70 rotatably connected to a front end of the supporting plate 56, a reel 42 fixedly disposed on the first transmission shaft 70, and a wire cable 43 wound on the reel 42, winding or releasing of the wire cable 43 is achieved by rotation of the reel 42, so that goods fixed on the wire cable 43 are lifted or lowered, a working chamber 12 is disposed in the housing 11, a safety protection assembly 902 is disposed on a rear inner wall of the working chamber 12, a rotating chamber 71 which is disposed at a lower side of the working chamber 12 and has an opening at a lower side is disposed in the housing 11, a hoisting mechanism 903 is disposed on an upper inner wall of the rotating chamber 71, the hoisting mechanism 903 comprises a second transmission shaft 36 which is rotatably connected to the inner wall of the upper side of the rotating cavity 71 and extends upwards to the inside of the working cavity 12, a first gear 33 which is fixedly arranged at the lower end of the second transmission shaft 36, a support shaft 34 which is fixedly arranged on the inner wall of the upper side of the rotating cavity 71, and a support frame 28 which is rotatably connected with the support shaft 34 and is in contact with the ground, wherein the tooth part of the support frame 28 is meshed with the first gear 33, and the rotation of the first gear 33 can be limited by the support frame 28 to enable the shell 11 to rotate, so that the rotating function is realized.

Beneficially, a motor 35 is fixedly arranged on the inner wall of the lower side of the working cavity 12, a third transmission shaft 29 is dynamically connected to the upper end of the motor 35, a fourth transmission shaft 65 is rotatably connected to the inner wall of the rear side of the working cavity 12, a main belt pulley 64 is fixedly arranged on the fourth transmission shaft 65, a fifth transmission shaft 69 is rotatably connected to the inner wall of the rear side of the working cavity 12, an auxiliary belt pulley 67 is fixedly arranged on the fifth transmission shaft 69, and a belt 58 is connected between the auxiliary belt pulley 67 and the main belt pulley 64.

According to the embodiment, the rotating assembly 901 will be described in detail below, the rotating assembly 901 further includes a second gear 30 fixedly disposed on the third transmission shaft 29, a rotation control housing 44 is fixedly disposed on the inner wall of the front side of the working chamber 12, a rotation control chamber 47 is disposed in the rotation control housing 44, a rotating electromagnet 49 is fixedly disposed on the inner wall of the upper side of the rotation control chamber 47, a first slider 45 capable of sliding up and down is disposed on the inner wall of the rotation control chamber 47, a first spring 46 is connected between the first slider 45 and the rotating electromagnet 49, a first sliding slot 72 is disposed on the inner wall of the left side of the working chamber 12, a second slider 40 capable of sliding up and down is disposed on the first sliding slot 72, the second slider 40 is fixedly connected with the first slider 45, a sixth transmission shaft 39 is rotatably connected to a lower end of the second slider 40 near the left side, a third gear 37 capable of being engaged with the second gear 30 is fixedly disposed on the sixth transmission shaft 39, a fourth gear 38 is fixedly arranged on the second transmission shaft 36 positioned in the working chamber 12 and can be meshed and connected with the third gear 37.

According to an embodiment, the protection component 902 is described in detail below, the protection component 902 includes a rotating wheel 66 fixedly disposed at a front end of the fifth transmission shaft 69, six protection cavities 51 are disposed in the rotating wheel 66 in an annular array manner, a third sliding block 52 is disposed in the protection cavities 51 and can slide radially, a friction wheel 53 with a very large friction force is rotatably connected to an inner wall of the front side of the working cavity 12, six second sliding grooves 55 are disposed in the friction wheel 53 in an annular array manner, and the second sliding grooves 55 can be slidably connected with the third sliding block 52.

According to an embodiment, the hoisting mechanism 903 is described in detail below, the hoisting mechanism 903 further includes a seventh transmission shaft 60 splined to the third transmission shaft 29, an adjustment cavity 32 is disposed in the third transmission shaft 29, a second spring 31 is connected between an inner wall of a lower side of the adjustment cavity 32 and the seventh transmission shaft 60, a first bevel gear 63 is fixedly disposed on the seventh transmission shaft 60, a second bevel gear 59 is fixedly disposed on an upper side of the first bevel gear 63 on the seventh transmission shaft 60, a hoisting control housing 27 is fixedly disposed on a right side of the motor 35 on an inner wall of a lower side of the working cavity 12, a hoisting control cavity 25 is disposed in the hoisting control housing 27, a hoisting electromagnet 26 is fixedly disposed on an inner wall of a lower side of the hoisting control cavity 25, a fixing bracket 23 capable of sliding up and down is disposed on an inner wall of the hoisting control cavity 25, and the fixing bracket 23 is rotatably connected to the seventh transmission shaft 60, the upper end of the fixed support 23 is fixedly provided with a first butt joint rod 22, the right end of the fixed support 23 is fixedly provided with a connecting rod 20, the left end of the connecting rod 20 is fixedly provided with a horizontal support 17 extending leftwards near the upper side, the lower end of the horizontal support 17 is fixedly provided with a second butt joint rod 18, the inner wall of the upper side of the working cavity 12 is fixedly provided with a butt joint block 16 capable of being butted with the connecting rod 20, the inner wall of the upper side of the working cavity 12 is provided with a third sliding groove 14, the third sliding groove 14 is provided with a fourth sliding block 13 capable of sliding leftwards and rightwards, a third spring 15 is connected between the fourth sliding block 13 and the butt joint block 16, the tail end of the lower end of the fourth sliding block 13 is fixedly provided with a fixed block 19, the upper end and the lower end of the fixed block 19 are symmetrically provided with butt joint grooves 21, the upper side of the butt joint grooves 21 can be connected, a fixed block 62 with teeth is fixedly arranged at the left end of the fixed block 19, a fifth gear 61 which can be meshed with the fixed block 62 with teeth is fixedly arranged on the fourth transmission shaft 65, a third bevel gear 57 which is positioned at the front side of the fifth gear 61 is fixedly arranged on the fourth transmission shaft 65, the third bevel gear 57 is meshed with the first bevel gear 63, a through hole 54 is formed in the inner wall of the left side of the working cavity 12 and communicated with the outside, a sixth gear 68 which is positioned at the rear side of the secondary pulley 67 is fixedly arranged on the fifth transmission shaft 69, and a seventh gear 41 which is positioned at the rear side of the reel 42 and meshed with the sixth gear 68 through the through hole 54 is fixedly arranged on the first transmission shaft 70.

In the initial state, the motor 35 is started to rotate the third transmission shaft 29, the rotating third transmission shaft 29 rotates the second gear 30, the rotating third transmission shaft 29 rotates the first bevel gear 63 and the second bevel gear 59 through the seventh transmission shaft 60, the second bevel gear 59 is not engaged with the third bevel gear 57 at this time, the first bevel gear 63 is not engaged with the third bevel gear 57, the toothed fixing block 62 is engaged with the fifth gear 61, the second abutting rod 18 is not abutted with the upper abutting groove 21, the first abutting rod 22 is not abutted with the lower abutting groove 21, the third gear 37 is not engaged with the fourth gear 38, the third gear 37 is not engaged with the second gear 30, and the third slider 52 is not slidably connected with the second sliding groove 55.

When an article needs to be lifted, the lifting electromagnet 26 is electrified, the magnetism of the lifting electromagnet 26 is the same as that of the fifth sliding block 24, at this time, the lifting electromagnet 26 attracts the fifth sliding block 24 to move upwards until the fifth sliding block 24 drives the connecting rod 20 to abut against the abutting block 16, the upward moving fifth sliding block 24 drives the first abutting rod 22 to abut against the lower abutting groove 21 through the fixing bracket 23 and drives the fixing block 19 to move rightwards, the fixing block 19 moving rightwards drives the fourth sliding block 13 to move rightwards, the third spring 15 accumulates elastic potential energy, the fixing block 19 moving rightwards drives the toothed fixing block 62 to be not meshed with the fifth gear 61 any more, at this time, the fourth transmission shaft 65 can rotate, the upward moving fifth sliding block 24 drives the seventh transmission shaft 60 to move upwards through the fixing bracket 23, the second spring 31 accumulates elastic potential energy, the upward moving seventh transmission shaft 60 drives the first bevel gear 63 to be meshed with the third bevel gear 57, the rotating first bevel gear 63 drives the fifth transmission shaft 69 to rotate clockwise sequentially through the third bevel gear 57, the fourth transmission shaft 65, the main belt wheel 64, the belt 58 and the auxiliary belt wheel 67, the clockwise rotating fifth transmission shaft 69 drives the first transmission shaft 70 to rotate anticlockwise sequentially through the sixth gear 68 and the seventh gear 41, so that the reel 42 rotates anticlockwise, the wire cable 43 wound on the reel 42 is released downwards, when the wire cable 43 is released to a proper position, the lifting electromagnet 26 is powered off and loses magnetism, the second spring 31 releases elastic potential energy to drive the seventh transmission shaft 60 to move downwards and reset, at the moment, the third bevel gear 57 is not meshed with the first bevel gear 63 any more, the reel 42 loses power, so that the wire cable 43 cannot be released continuously, the first abutting rod 22 is not abutted against the lower abutting groove 21 any more, and the third spring 15 releases elastic potential energy, the fourth sliding block 13 is driven to move leftwards, the fourth sliding block 13 moving leftwards drives the toothed fixing block 62 to move leftwards through the fixing block 19 and is meshed with the fifth gear 61, at the moment, the fourth transmission shaft 65 cannot rotate, when goods are fixed on the steel wire cable 43, the magnetic property of the electromagnet 26 for lifting is changed and is opposite to that of the fifth sliding block 24, at the moment, the electromagnet 26 for lifting enables the fifth sliding block 24 to move downwards, the fifth sliding block 24 moving downwards is abutted with the upper side abutting groove 21 through the fixing support 23, the connecting rod 20, the horizontal support 17, the second abutting rod 18 and the upper side abutting groove 21 in sequence and drives the fixing block 19 to move rightwards, at the moment, the fixing block 19 moving rightwards drives the fourth sliding block 13 to move rightwards, the third spring 15 accumulates elastic potential energy, the fixing block 19 moving rightwards drives the toothed fixing block 62 not to be meshed with, the fifth slide block 24 moving downwards drives the seventh transmission shaft 60 to move downwards through the fixed bracket 23, the second spring 31 accumulates elastic potential energy, the seventh transmission shaft 60 moving downwards drives the second bevel gear 59 to move downwards and to be meshed with the third bevel gear 57, at this time, the rotating second bevel gear 59 drives the fifth transmission shaft 69 to rotate anticlockwise through the third bevel gear 57, the fourth transmission shaft 65, the main belt wheel 64, the belt 58 and the secondary belt wheel 67 sequentially, the fifth transmission shaft 69 rotating anticlockwise drives the first transmission shaft 70 to rotate clockwise through the sixth gear 68 and the seventh gear 41 sequentially, so that the reel 42 rotates clockwise, at this time, the steel wire cable 43 is wound on the reel 42 to lift the goods, when the goods is lifted to a proper position, the lifting electromagnet 26 is powered off and loses magnetism, at this time, the second spring 31 releases elastic potential energy to drive the seventh transmission shaft 60 to move upwards and reset, at this time, the third bevel gear 57 is no longer engaged with the second bevel gear 59, the reel 42 loses power, so the wire cable 43 cannot rise, the second abutting rod 18 is no longer abutted against the upper abutting groove 21, the third spring 15 releases elastic potential energy to drive the fourth slider 13 to move leftwards, the fourth slider 13 moving leftwards drives the toothed fixing block 62 to move leftwards through the fixing block 19 and is engaged with the fifth gear 61, and at this time, the fourth transmission shaft 65 cannot rotate.

When the device needs to be steered, the rotating electromagnet 49 is electrified and magnetized, the rotating electromagnet 49 attracts the first slider 45 to move upwards, the first slider 45 moving upwards drives the third gear 37 to be meshed with the fourth gear 38 and the second gear 30 sequentially through the second slider 40 and the sixth transmission shaft 39, the rotating second gear 30 drives the first gear 33 to rotate sequentially through the third gear 37, the fourth gear 38 and the second transmission shaft 36, so that the shell 11 is rotated under the matching connection of the support frame 28, and the rotation of goods fixed on the wire cable 43 is realized,

when a fault occurs and the rotating speed of the fifth transmission shaft 69 is too high, the rotating wheel 66 is accelerated by the accelerated rotating fifth transmission shaft 69, so that the third sliding block 52 radially slides under the action of centrifugal force and is in sliding connection with the second sliding chute 55, the fourth spring 50 accumulates elastic potential energy, at the moment, the rotating speed of the rotating wheel 66 is reduced by the friction force of the friction wheel 53 and the inner wall of the front side of the working chamber 12, so that the rotating speed of the fifth transmission shaft 69 is reduced, and when the rotating speed is reduced to a safe speed, the third sliding block 52 is not in sliding connection with the second sliding chute 55 under the action of the fourth spring 50.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a but remote control's hoist, includes the casing, the casing left end is close to upside department and has set firmly the backup pad, its characterized in that:

the front end of the supporting plate is provided with a rotating assembly, the rotating assembly comprises a first transmission shaft rotationally connected with the front end of the supporting plate, a reel fixedly arranged on the first transmission shaft, and a steel wire cable wound on the reel, a working cavity is arranged in the shell, a protection assembly is arranged on the inner wall of the rear side of the working cavity, and a rotating cavity which is positioned at the lower side of the working cavity and is provided with an opening at the lower side is arranged in the shell;

the inner wall of the upper side of the rotating cavity is provided with a hoisting mechanism, the hoisting mechanism comprises a second transmission shaft which is rotatably connected with the inner wall of the upper side of the rotating cavity and extends upwards into the working cavity, a first gear which is fixedly arranged at the tail end of the lower end of the second transmission shaft, a support shaft which is fixedly arranged on the inner wall of the upper side of the rotating cavity, and a support frame which is rotatably connected with the support shaft and is contacted with the ground, and the toothed part of the support frame is meshed with the first gear;

a motor is fixedly arranged on the inner wall of the lower side of the working cavity, a third transmission shaft is connected to the upper end of the motor in a power mode, a fourth transmission shaft is rotatably connected to the inner wall of the rear side of the working cavity, a main belt wheel is fixedly arranged on the fourth transmission shaft, a fifth transmission shaft is rotatably connected to the inner wall of the rear side of the working cavity, an auxiliary belt wheel is fixedly arranged on the fifth transmission shaft, and a belt is connected between the auxiliary belt wheel and the main belt wheel;

the rotating assembly also comprises a second gear fixedly arranged on the third transmission shaft, a rotating control shell is fixedly arranged on the inner wall of the front side of the working cavity, a rotation control cavity is arranged in the rotation control shell, an electromagnet for rotation is fixedly arranged on the inner wall of the upper side of the rotation control cavity, a first sliding block capable of sliding up and down is arranged on the inner wall of the rotation control cavity, a first spring is connected between the first sliding block and the electromagnet for rotation, a first sliding groove is arranged on the inner wall of the left side of the working cavity, a second sliding block capable of sliding up and down is arranged on the first sliding groove, the second sliding block is fixedly connected with the first sliding block, a sixth transmission shaft is rotatably connected at the lower end of the second sliding block close to the left side, a third gear which can be in meshed connection with the second gear is fixedly arranged on the sixth transmission shaft, and a fourth gear which can be in meshed connection with the third gear is fixedly arranged on the second transmission shaft positioned in the working cavity;

the protection assembly comprises a rotating wheel fixedly arranged at the tail end of the front end of the fifth transmission shaft, six protection cavities are arranged in the rotating wheel in an annular array manner, a third sliding block is arranged in the protection cavities and can slide in the radial direction, the inner wall of the front side of the working cavity is rotatably connected with a friction wheel with extremely high friction force, six second sliding grooves are arranged in the friction wheel in an annular array manner, and the second sliding grooves can be in sliding connection with the third sliding block;

the hoisting mechanism further comprises a seventh transmission shaft in splined connection with the third transmission shaft, an adjusting cavity is arranged in the third transmission shaft, a second spring is connected between the inner wall of the lower side of the adjusting cavity and the seventh transmission shaft, a first bevel gear is fixedly arranged on the seventh transmission shaft, a second bevel gear positioned on the upper side of the first bevel gear is fixedly arranged on the seventh transmission shaft, a hoisting control shell positioned on the right side of the motor is fixedly arranged on the inner wall of the lower side of the working cavity, a hoisting control cavity is arranged in the hoisting control shell, a electromagnet for hoisting is fixedly arranged on the inner wall of the lower side of the hoisting control cavity, a fixed support capable of sliding up and down is arranged on the inner wall of the hoisting control cavity, the fixed support is rotatably connected with the seventh transmission shaft, a first butt rod is fixedly arranged at the upper end of the fixed support, a connecting rod is fixedly arranged at the right end of the fixed support, and a horizontal support extending, a second abutting rod is fixedly arranged at the lower end of the horizontal support, an abutting block capable of abutting against the connecting rod is fixedly arranged on the inner wall of the upper side of the working cavity, a third sliding groove is formed in the inner wall of the upper side of the working cavity, a fourth sliding block capable of sliding left and right is arranged on the third sliding groove, a third spring is connected between the fourth sliding block and the abutting block, a fixed block is fixedly arranged at the tail end of the lower end of the fourth sliding block, abutting grooves are symmetrically formed in the upper end and the lower end of the fixed block, the abutting grooves in the upper side can be in sliding connection with the horizontal support, the abutting grooves in the lower side can be in abutting connection with the first abutting rod, a fixed block with teeth is fixedly arranged at the left end of the fixed block, a fifth gear capable of being in meshing connection with the fixed block with the teeth is fixedly arranged on the fourth transmission shaft, a third bevel gear positioned in front of the fifth gear is fixedly arranged on the fourth transmission shaft, the inner wall of the left side of the working cavity is communicated with the outside to form a through hole, a sixth gear located on the rear side of the auxiliary belt wheel is fixedly arranged on the fifth transmission shaft, and a seventh gear located on the rear side of the reel and meshed and connected with the sixth gear through the through hole is fixedly arranged on the first transmission shaft.