CN114408775A

CN114408775A - Intelligent rollover prevention system of crane and crane

Info

Publication number: CN114408775A
Application number: CN202111649791.7A
Authority: CN
Inventors: 黄浩奇; 邱雪芳; 黄以建; 张学东; 陆胜强
Original assignee: Zhejiang Xiecheng Crane Machinery Co ltd
Current assignee: Zhejiang Xiecheng Crane Machinery Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-04-29
Anticipated expiration: 2041-12-30
Also published as: CN114408775B

Abstract

The invention discloses an intelligent anti-rollover system of a crane and the crane, which belong to the technical field of cranes and comprise an anti-rollover device and a signal receiving device, wherein the anti-rollover device is electrically connected with the signal receiving device and comprises two symmetrically arranged mounting columns, a sliding frame is arranged between the mounting columns, a sliding plate is arranged on the sliding frame, two supporting plates are arranged at the bottom ends of the mounting columns, two first electric control oil cylinders are arranged on the supporting plates, the top ends of the first electric control oil cylinders are connected with the bottom ends of the mounting columns, a fixing mechanism is arranged on the supporting plates and positioned between the two first electric control oil cylinders, fastening mechanisms are also arranged on the mounting columns, and protective mechanisms are arranged on the outer sides of the supporting plates; according to the invention, the signal receiver and the displacement sensor are arranged at the same horizontal height through the matching of the anti-rollover device and the signal receiving device, so that when the crane sinks, the crane is lifted up and restored to the original position, the change of the position of the center of gravity can be avoided, and the possibility of rollover of the crane is reduced.

Description

Intelligent rollover prevention system of crane and crane

Technical Field

The invention belongs to the technical field of cranes, and particularly relates to an intelligent anti-rollover system of a crane and the crane.

Background

A crane is a machine that lifts or moves a heavy object by means of a lifting hook or other load handling device. Along with the position change of the heavy object, the gravity center of the crane is also constantly shifted, and when the gravity center of the crane moves to a more offset position, the danger of rollover can occur, and a major accident is caused.

At present, no special control device is available in the aspect of preventing rollover, and only some improvement methods are provided in the aspect of improving the stability of the vehicle, such as: the method is characterized in that a heavier chassis and a crane are arranged, the span of supporting legs is increased, auxiliary supporting legs are added, a counterweight is added, and the like, and although the schemes play a certain role in preventing side turning, the potential safety hazards still exist, for example, in outdoor land construction, the crane can sink, and the side turning is easy to happen. Therefore, the development of a novel intelligent anti-rollover system of the crane and the crane not only have urgent research values, but also have good economic benefits and industrial application potentials, which are the basis of the power completed by the invention.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an intelligent anti-rollover system of a crane and the crane, which are used for solving the problems in the background art.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a side turning system is prevented to hoist intelligence, is including preventing device and the signal receiver device of turning on one's side, electric connection between preventing device and the signal receiver device of turning on one's side, prevent that the device of turning on one's side is including two erection columns that the symmetry set up, be equipped with the balladeur train between the erection column, be equipped with the slide on the balladeur train, the bottom of erection column is equipped with two backup pads, be equipped with two first automatically controlled hydro-cylinders in the backup pad, the top of first automatically controlled hydro-cylinder is connected with the bottom of erection column, it is equipped with fixed establishment to lie in between two first automatically controlled hydro-cylinders in the backup pad, still be equipped with fastening device on the erection column, be equipped with protection machanism on the outside of backup pad.

Furthermore, the fixing mechanism comprises a second electric control oil cylinder penetrating through the supporting plate, a controller is arranged on a base of the second electric control oil cylinder, a first fixing column is arranged at the output end of the second electric control oil cylinder, a through groove transversely penetrates through the first fixing column, a two-way hydraulic oil cylinder is arranged in the middle of the through groove, a second fixing column is arranged at the output end of the two-way hydraulic oil cylinder, a plurality of arc-shaped fixing plates are arranged on the outer wall of the second fixing column, and inclined plates are arranged on the arc-shaped fixing plates.

Furthermore, a displacement sensor is further arranged at the top end of the first electric control oil cylinder and electrically connected with the signal receiving device.

Further, fastening device includes the automatically controlled hydro-cylinder of third, the output of the automatically controlled hydro-cylinder of third is equipped with first U-shaped fixed slot, the front end mirror image of first U-shaped fixed slot is equipped with the second U-shaped fixed slot, be equipped with first fixed block and second fixed block on the both ends of first U-shaped fixed slot respectively, be equipped with the screw hole on the first fixed block, the screw hole fit has the screw thread post, the one end of screw thread post is equipped with a driving motor, the other end and the second U-shaped fixed slot of screw thread post are connected, be equipped with first flexible post on the second fixed block, the other end and the second U-shaped fixed slot of first flexible post are connected.

Furthermore, the inner walls of the first U-shaped fixing groove and the second U-shaped fixing groove are provided with first anti-skidding teeth.

Further, the protection machanism includes first diaphragm, first diaphragm passes through the side of bolt fastening in the backup pad, it is connected with a plurality of connecting plate to rotate on the top of first diaphragm, each the top of connecting plate is connected with the second diaphragm, and the cover is equipped with first L shape jam plate on the connecting plate that is located the outermost end, the lockhole has been seted up on the first L shape jam plate, run through on the second diaphragm and seted up the through-hole, be equipped with the pull rod in the through-hole, the bottom of pull rod is equipped with second L shape jam plate, still is equipped with the pivot on the side that is located the connecting plate of outermost end, be equipped with second driving motor on the outer end of pivot.

Further, the outside of first L shape jam plate is equipped with the arc chamfer, the bottom of second L shape jam plate is equipped with the mounting hole, be equipped with expanding spring in the mounting hole, be equipped with the lock post on expanding spring's the bottom, the lock post is mutually supported with the lockhole, still be equipped with the arc traveller on the bottom of lock post.

Furthermore, a placing groove is formed in the second transverse plate, a pedal plate is arranged on the placing groove, and second anti-skidding teeth are arranged on the pedal plate.

Further, the signal receiving device comprises a supporting foot frame, an installation cylinder is arranged at the middle position of the supporting foot frame, a second telescopic column is arranged inside the installation cylinder, an adjusting knob is arranged at the bottom end of the second telescopic column, a fixing frame is arranged at the top end of the second telescopic column, a mounting frame is connected between the fixing frames through an adjusting nut, a signal receiver is arranged at the middle position of the mounting frame, a weighting plate is arranged below the signal receiver, a weighting block is arranged at the lower end of the weighting plate, a supporting block is further arranged at the bottom end of the supporting foot frame, and an inserting column is arranged at the bottom end of the supporting block.

The invention has the beneficial effects that:

according to the invention, the signal receiver and the displacement sensor are arranged at the same horizontal height through the matching of the anti-rollover device and the signal receiving device, so that when the crane sinks, the crane is lifted up and restored to the original position, the change of the position of the center of gravity can be avoided, and the possibility of rollover is reduced; meanwhile, the crane can be fixed through the fixing mechanism arranged at the bottom, the stability is improved, the two-way hydraulic oil cylinder is arranged, the second fixing column can be lifted out when necessary and fixed in soil on two sides, the crane is reinforced, the side turning is prevented, and the safety accidents are reduced.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the rollover prevention device;

FIG. 3 is a schematic view of the structure on the support plate;

FIG. 4 is a schematic structural view of the fastening mechanism;

FIG. 5 is a schematic structural view of the guard mechanism;

FIG. 6 is a schematic structural view of a first L-shaped locking plate;

FIG. 7 is a schematic structural view of a second L-shaped locking plate;

fig. 8 is a schematic structural diagram of the signal receiving apparatus.

The reference numbers in the figures illustrate:

1. mounting a column; 2. a carriage; 3. a slide plate; 4. a support plate; 5. a first electrically controlled cylinder; 6. a fixing mechanism; 7. a fastening mechanism; 8. a protection mechanism; 9. a signal receiving device; 10. an anti-rollover device; 601. a second electrically controlled cylinder; 602. a controller; 603. a first fixed column; 604. a through groove; 605. a bidirectional hydraulic cylinder; 606. a second fixed column; 607. an arc-shaped fixing plate; 608. a sloping plate; 609. a displacement sensor; 701. a third electric control oil cylinder; 702. a first U-shaped fixing groove; 703. a second U-shaped fixing groove; 704. a first fixed block; 705. a second fixed block; 706. a threaded hole; 707. a threaded post; 708. a first drive motor; 709. a first telescopic column; 710. a first anti-slip tooth; 801. a first transverse plate; 802. a connecting plate; 803. a second transverse plate; 804. a first L-shaped locking plate; 805. a lock hole; 806. a through hole; 807. a pull rod; 808. a second L-shaped locking plate; 809. arc chamfering; 810. mounting holes; 811. a tension spring; 812. a lock cylinder; 813. an arc-shaped sliding column; 814. a rotating shaft; 815. a second drive motor; 816. a placing groove; 817. a pedal; 818. a second anti-slip tooth; 901. a supporting foot rest; 902. mounting the cylinder; 903. a second telescopic column; 904. adjusting a knob; 905. a fixed mount; 906. adjusting the nut; 907. a mounting frame; 908. a signal receiver; 909. a weight increasing plate; 910. a weight increasing block; 911. a support block; 912. and (5) inserting the column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

The utility model provides a crane, this crane includes crane base, jib loading boom, control chamber, is equipped with on the crane base and turns to the device, turns to the device and is connected with slide 3 on the device 10 of preventing turning on one's side, jib loading boom one end is connected with the control chamber, the jib loading boom other end is connected with the lifting rope, the control chamber is hollow cube form, the control chamber bottom is equipped with slewer, the hoist engine is installed at the top, lifting rope one end is connected with the hoist engine, the lifting hook is connected to the other end, the lifting hook includes connecting portion, hook body portion and buckle for the jack-up article.

An intelligent anti-rollover system of a crane is disclosed, as shown in fig. 1 and fig. 2, comprising an anti-rollover device 10 and a signal receiving device 9, wherein the anti-rollover device 10 is electrically connected with the signal receiving device 9, the anti-rollover device 10 comprises two symmetrically arranged mounting columns 1, a sliding frame 2 is arranged between the mounting columns 1, a sliding plate 3 is arranged on the sliding frame 2, two supporting plates 4 are arranged at the bottom ends of the mounting columns 1, two first electric control cylinders 5 are arranged on the supporting plates 4, the top ends of the first electric control cylinders 5 are connected with the bottom ends of the mounting columns 1, a fixing mechanism 6 is arranged between the two first electric control cylinders 5 on the supporting plate 4, a fastening mechanism 7 is also arranged on the mounting columns 1, a protective mechanism 8 is arranged on the outer side of the supporting plates 4, a displacement sensor 609 is also arranged on the top ends of the first electric control cylinders 5, the displacement sensor 609 is electrically connected with the signal receiving device 9, the arranged displacement sensor 609 is consistent with the horizontal height state of the signal receiving device 9, when the hoist sinks, displacement sensor 609's position is less than signal receiver 9, can order about first automatically controlled hydro-cylinder 5 and rise, thereby get back to the primary importance with the hoist, avoid sinking of hoist, fastening device 7 can be fixed the hoist from both sides, increase stability, can promote the hoist and move on balladeur train 2 simultaneously, facilitate the use, fixing device 6 can insert the underground, avoid turning on one's side of hoist, the protection machanism 8 that is equipped with can carry out certain protection to controller 602, can be convenient for take the operating personnel in the hoist again, and is convenient for use.

As shown in fig. 3, the fixing mechanism 6 includes a second electronic control cylinder 601 penetrating through the supporting plate 4, a controller 602 is disposed on a base of the second electronic control cylinder 601, an output end of the second electronic control cylinder 601 is provided with a first fixing column 603, a through groove 604 is transversely penetrated through the first fixing column 603, a bidirectional hydraulic cylinder 605 is disposed in a middle position of the through groove 604, an output end of the bidirectional hydraulic cylinder 605 is provided with a second fixing column 606, a plurality of arc fixing plates 607 are disposed on an outer wall of the second fixing column 606, an inclined plate 608 is disposed on the arc fixing plates 607, the first fixing column 603 can be inserted into the ground by driving of the second electronic control cylinder 601 to fix the supporting plate 4, so as to fix the crane, when the crane possibly turns on one side, the bidirectional hydraulic cylinder 605 can lift the second fixing column 606 out of the through groove 604, insert into the ground on both sides, reinforce both sides, and prevent the crane from turning on one side, the arc-shaped fixing plate 607 and the inclined plate 608 are arranged, so that the ground gripping capacity of the second fixing column 606 can be increased, and the stability of the second fixing column 606 is enhanced.

As shown in fig. 4, the fastening mechanism 7 includes a third electric control cylinder 701, an output end of the third electric control cylinder 701 is provided with a first U-shaped fixing groove 702, a front end of the first U-shaped fixing groove 702 is mirrored to be provided with a second U-shaped fixing groove 703, two ends of the first U-shaped fixing groove 702 are respectively provided with a first fixing block 704 and a second fixing block 705, the first fixing block 704 is provided with a threaded hole 706, the threaded hole 706 is internally fitted with a threaded post 707, one end of the threaded post 707 is provided with a first driving motor 708, the other end of the threaded post 707 is connected with the second U-shaped fixing groove 703, the second fixing block 705 is provided with a first telescopic post 709, the other end of the first telescopic post 709 is connected with the second U-shaped fixing groove, inner walls of the first U-shaped fixing groove 702 and the second U-shaped fixing groove 703 are both provided with a first anti-skid tooth 710, the threaded post 707 can adjust a position between the first U-shaped fixing groove 702 and the second U-shaped fixing groove 703, thereby fix the hoist from both sides, the first multiplicable first U-shaped fixed slot 702 of first anti-skidding tooth 710 that is equipped with and the centre gripping steadiness of second U-shaped fixed slot 703, the third automatically controlled hydro-cylinder 701 that is equipped with can promote the hoist and remove to adjust the position of hoist on balladeur train 2, be convenient for control the jack-up scope of hoist.

As shown in fig. 5-7, the protection mechanism 8 includes a first horizontal plate 801, the first horizontal plate 801 is fixed at the side end of the support plate 4 by bolts, a plurality of connecting plates 802 are rotatably connected to the top end of the first horizontal plate 801, a second horizontal plate 803 is connected to the top end of each connecting plate 802, a first L-shaped lock plate 804 is sleeved on the outermost connecting plate 802, a lock hole 805 is formed on the first L-shaped lock plate 804, a through hole 806 is formed on the second horizontal plate 803, a pull rod 807 is arranged in the through hole 806, a second L-shaped lock plate 808 is arranged at the bottom end of the pull rod 807, a rotating shaft 814 is further arranged at the side end of the outermost connecting plate 802, a second driving motor 815 is arranged at the outer end of the rotating shaft 814, an arc chamfer 809 is arranged at the outer side of the first L-shaped lock plate 804, a mounting hole 810 is arranged at the bottom end of the second L-shaped lock plate 808, a telescopic spring 811 is arranged in the mounting hole 810, a lock column 812 is arranged at the bottom end of the telescopic spring 811, the lock column 812 is matched with the lock hole 805, an arc-shaped sliding column 813 is further arranged at the bottom end of the lock column 812, a placement groove 816 is formed in the second transverse plate 803, a pedal 817 is arranged on the placement groove 816, second anti-skidding teeth 818 are arranged on the pedal 817, the first L-shaped locking plate 804 can be matched with the second L-shaped locking plate 808, the protection mechanism 8 can be limited, the connecting plate 802 can rotate and ascend through the driving of a second driving motor 815, the second transverse plate 803 is lifted, operators can be conveniently conveyed to the crane, when the connecting plate 802 rotates to a vertical position, the first transverse plate 801, the connecting plate 802 and the second transverse plate 803 can form a fence, and the controller is protected to a certain extent.

As shown in fig. 8, the signal receiving device 9 includes a supporting foot stand 901, an installation barrel 902 is disposed at the middle position of the supporting foot stand 901, a second telescopic column 903 is disposed inside the installation barrel 902, an adjusting knob 904 is disposed at the bottom end of the second telescopic column 903, a fixing frame 905 is disposed at the top end of the second telescopic column 903, an installation frame 907 is connected between the fixing frames 905 through an adjusting nut 906, a signal receiver 908 is disposed at the middle position of the installation frame 907, a weight increasing plate 909 is disposed below the signal receiver 908, a weight increasing block 910 is disposed at the lower end of the weight increasing plate 909, a supporting block 911 is further disposed at the bottom end of the supporting foot stand 901, inserting columns 912 are disposed at the bottom ends of the supporting blocks 911, the adjusting knob 904 can adjust the height of the second telescopic column 903 according to taxi, so as to adjust the position of the signal receiver 908, the signal receiver 908 and the displacement sensor 609 are at the same height, the supporting block 911 contacts with the bottom surface, and increase the contact area, thus, the stability is improved, and the weight increasing plate 909 and the weight increasing block 910 are provided to increase the stability of the signal receiving apparatus 9 by inserting the insertion post 912 into the ground and further fixing the support stand 901.

In the specific operation, the rollover prevention device 10 and the signal receiving device 9 are placed at a place to be used, the rollover prevention device 10 is fixed, the second electric control oil cylinder 601 on the driving fixing mechanism 6 tightly inserts the first fixing column 603 into the ground to support and limit the supporting plate 4, then the threaded column 707 on the fastening mechanism 7 is adjusted, the distance between the first U-shaped fixing groove 702 and the second U-shaped fixing groove 703 is adjusted through the driving of the first driving motor 708, the two sides of the crane are clamped and fixed, then the signal receiving device 9 is fixed, the supporting block 911 at the bottom of the supporting foot stand 901 is grounded, the inserted column 912 is inserted into the ground to stabilize the signal receiving device 9, then the adjusting knob 904 is adjusted to adjust the height of the signal receiver 908, so that the signal receiver 908 and the displacement sensor 609 on the rollover prevention device 10 are at the same height, after the stabilization is completed, an operator stands on the pedal 817 of the placement groove 816, the second driving motor 815 is started, so that the connecting plate 802 is rotated and lifted, the second transverse plate 803 is lifted, so that the operator is sent to the crane, and after the connecting plate 802 is lifted to the vertical position, the lock column 812 enters the lock hole 805 to limit, so that the first transverse plate 801, the connecting plate 802 and the second transverse plate 803 form a fence to protect the controller, when the crane is used, a control room in the crane can control the third electric control oil cylinder 701 to stretch and retract to drive the crane to move back and forth on the sliding frame 2, so that the position of the crane is adjusted, if the anti-rollover device 10 sinks, the position of the displacement sensor 609 is lower than the position of the signal receiver 908, which drives the first electric control oil cylinder 5 to rise, so that the displacement sensor 609 returns to the same position as the signal receiver 908, the crane can be prevented from sinking, if the gravity center of the crane is unstable, the two-way hydraulic oil cylinder 605 can drive the second fixing column 606 to extend out of the through groove 604, the second fixing column is inserted into soil on two sides, two sides are fixed, the ground grabbing force is increased, the safety accident caused by side turning is prevented, and after the operation is finished, an operator returns to the placing groove 816. Pulling the pull rod 807 disengages the lock cylinder 812 from the lock hole 805 and the second drive motor 815 is activated, returning the operator to the ground.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. An intelligent anti-rollover system of a crane comprises an anti-rollover device (10) and a signal receiving device (9), it is characterized in that the rollover prevention device (10) is electrically connected with the signal receiving device (9), the rollover prevention device (10) comprises two symmetrically arranged mounting columns (1), a sliding frame (2) is arranged between the mounting columns (1), a sliding plate (3) is arranged on the sliding frame (2), two supporting plates (4) are arranged at the bottom end of the mounting column (1), two first electric control oil cylinders (5) are arranged on the supporting plate (4), the top ends of the first electric control oil cylinders (5) are connected with the bottom ends of the mounting columns (1), a fixing mechanism (6) is arranged between the two first electric control oil cylinders (5) on the supporting plate (4), the mounting column (1) is further provided with a fastening mechanism (7), and the outer side of the support plate (4) is provided with a protection mechanism (8).

2. The intelligent crane rollover prevention system according to claim 1, wherein the fixing mechanism (6) comprises a second electronic control cylinder (601) penetrating through the support plate (4), a controller (602) is arranged on a base of the second electronic control cylinder (601), a first fixing column (603) is arranged at an output end of the second electronic control cylinder (601), a through groove (604) is transversely arranged on the first fixing column (603) in a penetrating manner, a bidirectional hydraulic cylinder (605) is arranged in the middle of the through groove (604), a second fixing column (606) is arranged at an output end of the bidirectional hydraulic cylinder (605), a plurality of arc-shaped fixing plates (607) are arranged on outer walls of the second fixing column (606), and inclined plates (608) are arranged on the arc-shaped fixing plates (607).

3. The intelligent crane rollover prevention system as claimed in claim 1, wherein a displacement sensor (609) is further arranged at the top end of the first electrically controlled cylinder (5), and the displacement sensor (609) is electrically connected with the signal receiving device (9).

4. The intelligent crane rollover prevention system according to claim 1, wherein the fastening mechanism (7) comprises a third electrically controlled oil cylinder (701), the output end of the third electrically controlled oil cylinder (701) is provided with a first U-shaped fixing groove (702), the front end of the first U-shaped fixing groove (702) is mirrored with a second U-shaped fixing groove (703), two ends of the first U-shaped fixing groove (702) are respectively provided with a first fixing block (704) and a second fixing block (705), the first fixing block (704) is provided with a threaded hole (706), the threaded hole (706) is internally matched with a threaded column (707), one end of the threaded column (707) is provided with a first driving motor (708), the other end of the threaded column (707) is connected with the second U-shaped fixing groove (703), the second fixing block (705) is provided with a first telescopic column (709), the other end of the first telescopic column (709) is connected with a second U-shaped fixing groove (703).

5. The intelligent crane rollover prevention system as recited in claim 4, wherein the first anti-slip tooth (710) is arranged on each of the inner walls of the first U-shaped fixing groove (702) and the second U-shaped fixing groove (703).

6. The intelligent crane rollover prevention system as claimed in claim 1, wherein the protection mechanism (8) comprises a first horizontal plate (801), the first horizontal plate (801) is fixed at the side end of the support plate (4) through bolts, a plurality of connecting plates (802) are rotatably connected to the top end of the first horizontal plate (801), a second horizontal plate (803) is connected to the top end of each connecting plate (802), a first L-shaped locking plate (804) is sleeved on the connecting plate (802) at the outermost end, a locking hole (805) is formed in the first L-shaped locking plate (804), a through hole (806) is formed in the second horizontal plate (803) in a penetrating manner, a pull rod (807) is arranged in the through hole (806), a second L-shaped locking plate (808) is arranged at the bottom end of the pull rod (807), a rotating shaft (814) is further arranged at the side end of the connecting plate (802) at the outermost end, and a second driving motor (815) is arranged at the outer end of the rotating shaft (814).

7. The intelligent crane rollover prevention system as claimed in claim 5, wherein an arc-shaped chamfer (809) is arranged on the outer side of the first L-shaped locking plate (804), a mounting hole (810) is arranged at the bottom end of the second L-shaped locking plate (808), a telescopic spring (811) is arranged in the mounting hole (810), a locking column (812) is arranged at the bottom end of the telescopic spring (811), the locking column (812) is matched with the locking hole (805), and an arc-shaped sliding column (813) is further arranged at the bottom end of the locking column (812).

8. The intelligent crane rollover prevention system as claimed in claim 6, wherein the second transverse plate (803) is provided with a placement groove (816), the placement groove (816) is provided with a pedal (817), and the pedal (817) is provided with second anti-skid teeth (818).

9. The intelligent crane rollover prevention system as claimed in claim 1, wherein the signal receiving device (9) comprises a supporting foot stand (901), an installation barrel (902) is arranged in the middle of the supporting foot stand (901), a second telescopic column (903) is arranged inside the installation barrel (902), an adjusting knob (904) is arranged at the bottom end of the second telescopic column (903), a fixing frame (905) is arranged at the top end of the second telescopic column (903), a mounting frame (907) is connected between the fixing frames (905) through an adjusting nut (906), a signal receiver (908) is arranged in the middle of the mounting frame (907), a weighting plate (909) is arranged below the signal receiver (908), a weighting block (910) is arranged at the lower end of the weighting plate (909), and a supporting block (911) is further arranged at the bottom end of the supporting foot stand (901), the bottom of supporting shoe (911) all is equipped with and inserts post (912).