Overturn-preventing system for crane

Abstract

The invention relates to a crane anti-overturning system, and belongs to the technical field of anti-overturning, the crane anti-overturning system comprises a crane main body, a supporting device, a counterweight device and a reverse thrust device, the supporting device is used for supporting a crane and enabling the crane to be in a horizontal stable position; the counterweight device is used for increasing the self counterweight of the crane; the thrust reverser is arranged on the side, away from a suspension arm, of the crane and comprises an ignition part, the ignition part comprises a fuel bin and an igniter, the igniter is arranged on one side of the fuel bin and used for igniting fuel in the fuel bin, and an overturning inductive sensor is arranged at the bottom of the crane body and electrically connected with the igniter. The overturning induction sensor collects overturning signals of the crane body and transmits the signals to the igniter, and the igniter ignites after receiving the signals. The device has the effects that the reverse thrust generated by combustion is matched with the counterweight device to provide additional torque for the crane main body, so that the crane is stabilized, the overturning accident of the crane is prevented, and the hoisting safety of the crane is improved.

Description

Technical Field

[0001] The present application relates to the technical field of anti-overturning, and in particular to an anti-overturning system for a crane. Background Art

[0002] Crane overturning accidents are often caused by overload due to improper operation during the lifting process. At present, the measures to prevent crane overturning are mainly limited to passive prevention, such as checking the mechanical state of the crane, the compaction state of the foundation, the stability of the hoisted object, and the weather conditions before lifting.

[0003] Once there are signs of overturning, the general treatment method is to immediately uncouple the mobile crane from the suspended object, because the crane overturns in a very short time, and there is not enough time to perform anti-overturning operations on the mobile crane or the suspended object. In most crane overturning accidents, the overturning direction is along the longitudinal direction of the boom and the suspended object. When the moment formed by the gravity of the suspended object is not much different from the moment formed by the mobile crane's own counterweight, it is easy to cause the mobile crane to overturn. Therefore, it is urgent to provide a crane anti-overturning system. Summary of the invention

[0004] In order to increase the torque formed by the counterweight of the mobile crane itself when the mobile crane tends to overturn and prevent the occurrence of overturning, the present application provides a crane anti-overturning system.

[0005] The present application provides a crane anti-overturning system adopts the following technical solution: A crane anti-overturning system comprises a crane body, a supporting device, a counterweight device and a reverse thrust device, wherein the supporting device comprises a supporting plate and supporting legs, the crane body is arranged on the supporting plate, the supporting legs are arranged on a side of the supporting plate away from the crane body, the supporting legs are in contact with the ground, and the supporting device is used to support the crane body and to keep the crane body in a horizontal and stable position; The counterweight device comprises a first counterweight block, the first counterweight block is arranged on the crane body, and the counterweight device is used to increase the counterweight of the crane body itself; The reverse thrust device is arranged on the side of the crane body away from the boom, and the reverse thrust device includes an ignition part, and the ignition part includes a fuel tank and an igniter. The igniter is arranged on one side of the fuel tank, and the igniter is used to ignite the fuel in the fuel tank. A rollover sensing sensor is provided at the bottom of the crane body, and the rollover sensing sensor is electrically connected to the igniter. The rollover sensing sensor collects the rollover signal of the crane body and transmits the signal to the igniter, and the igniter ignites after receiving the signal.

[0006] By adopting the above technical solution, the support legs and the support plates cooperate to provide stable support for the crane body and keep the crane body in a horizontal state. During the operation of the crane body, the overturning sensing sensor always monitors the condition of the crane body. If it is detected that the crane body has a tendency to overturn, it immediately sends a signal to the igniter. After receiving the signal, the igniter ignites the fuel tank, and the fuel tank begins to burn. The reverse thrust generated by the combustion cooperates with the counterweight device to provide additional torque for the crane body, which is then used to stabilize the crane, prevent it from overturning accidents, and improve the safety of crane lifting.

[0007] Preferably, the counterweight device further comprises a second counterweight block, a placement groove is provided in the first counterweight block, the second counterweight block is arranged in the placement groove, and the second counterweight block is detachably connected to the first counterweight block.

[0008] By adopting the above technical solution, the counterweight is increased, which is beneficial to increasing the torque formed by the counterweight of the crane body itself, and is beneficial to improving the stability during the lifting process.

[0009] Preferably, the reverse thrust device also includes a moving part, on which a moving slide rod is provided, and one end of the ignition part facing the moving part is provided with a moving through hole for the moving slide rod to be placed and slided, and the moving part moves along the direction of gravity relative to the ignition part.

[0010] By adopting the above technical solution, under the action of the combustion reverse thrust, the moving part is pushed to separate relative to the ignition part, thereby achieving a partial force release and reducing the damage to the reverse thrust device itself caused by excessive instantaneous impact force.

[0011] Preferably, a limit stop bar is provided in the movable through hole, a movable slider is provided at one end of the movable slide rod away from the movable part, the movable slider abuts against the limit stop bar, the limit stop bar is made of flexible material, and a wedge surface is provided on the side of the movable slider abutting against the limit stop bar.

[0012] By adopting the above technical solution, before the moving part moves relative to the ignition part, the moving slider is located on the limit stop bar. Under the action of the reverse thrust, the moving slider abuts against the limit stop bar. The deformation of the limit stop bar itself is utilized to make the moving slider move along the moving through hole. This can not only realize the movement of the moving part, but also limit the moving path of the moving part, thereby ensuring the safety of the device.

[0013] Preferably, a through groove is provided on the first counterweight block, the through groove is communicated with the placement groove, the moving part passes through and is placed in the through groove, and a placement block is provided on the ignition part, and the placement block is placed in the placement groove.

[0014] By adopting the above technical solution, in actual use, when there is no need to install a reverse thrust device, the second counterweight block is connected to the first counterweight block, and the deadweight of the crane body is increased by using its own weight. If a reverse thrust device needs to be installed, the second counterweight block is removed and the placement block is placed in the placement slot to achieve the connection and installation between the reverse thrust device and the first counterweight block.

[0015] Preferably, a moving groove is further provided on the first counterweight block, the moving groove is communicated with the placement groove and the through groove, a moving block is provided on the moving portion, and the moving groove is used for the moving block to be placed and moved.

[0016] By adopting the above technical solution, during installation, the moving part is installed in the through groove. When the moving part moves away from the ignition part, the moving block moves along the moving groove, and the moving groove further limits the moving path and moving distance of the moving block, further ensuring the safety and stability of the device during use.

[0017] Preferably, the reverse thrust device also includes a connecting plate and a boosting plate, the connecting plate and the boosting plate are connected, the boosting plate is arranged on the side of the ignition part away from the moving part, the supporting device also includes a follower track, a plurality of rollers are arranged on the opposite side walls of the follower track, a follower slider is arranged at the end of the connecting plate away from the boosting plate, the follower slider is arranged in the follower track, and the follower slider abuts against the roller.

[0018] By adopting the above technical solution, the booster plate blocks the thrust generated by the combustion of fuel and reduces the leakage of thrust, which is beneficial to improving the stability of the size of the reverse thrust and making the operation of the device controllable. At the same time, if the crane keeps rotating when lifting heavy objects, the booster plate moves through the movement of the follower slider in the follower track, so that the booster plate moves synchronously with the reverse thrust device and always keeps the relative position between the booster plate and the reverse thrust device stable.

[0019] Preferably, a first clamping piece and a second clamping piece are symmetrically provided on two opposite sides of the second counterweight block, a clamping groove is provided on the side of the first counterweight block away from the crane body, the first clamping piece is clamped with the clamping groove, and the second clamping piece is connected to the connecting plate.

[0020] By adopting the above technical solution, after the second counterweight block is moved out from the first counterweight block, the second counterweight block is clamped in the clamping groove through the first clamping piece, and then clamped and connected with the first counterweight block. On the other side, the second clamping piece is clamped with the connecting plate. When the crane body is rotated and lifted through its own slewing mechanism, the connecting plate is driven to rotate accordingly through the first counterweight block, so that the relative position between the power-assisting plate and the reverse thrust device always remains stable.

[0021] Preferably, a locking piece is provided in the first counterweight block, and the locking piece includes a locking rod. A locking socket is provided on the first counterweight block for the locking rod to slide. One end of the locking socket is connected to the snap-in groove, and the other end of the locking socket is connected to the placement groove. A locking matching hole is provided on the placement block, and the locking matching hole is provided for the locking rod to be inserted.

[0022] By adopting the above technical solution, the locking rod is located in the locking socket, and one end of the locking rod extends into the snap-in groove. When the first snap-in piece is connected to the snap-in groove, the first snap-in piece abuts against the locking rod and drives the locking rod to move along the locking socket, so that the other end of the locking rod extends into the locking matching hole, thereby realizing locking limit for the placement block and the ignition part.

[0023] Preferably, the locking member includes a locking slider and a locking spring, a locking groove is opened in the first counterweight block, the locking slider is arranged in the locking groove, one end of the locking spring is connected to the locking slider, and the other end is connected to the groove wall of the locking groove, and the locking rod is fixedly connected to the locking slider.

[0024] By adopting the above technical solution, when the first connecting member is inserted into the locking groove, it abuts against the end of the locking rod, and the locking rod drives the locking slider to slide along the locking groove and presses the locking spring at the same time. At this time, the other end of the locking rod is inserted into the locking matching hole. If the reverse thrust device is removed, the second counterweight block is first disconnected from the first counterweight block. Under the action of the elastic force of the locking spring itself, the locking rod is reset and moved, and moves out of the placement block, which is convenient for the separation of the ignition part and the first counterweight block.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The support legs and support plates cooperate to provide stable support for the crane body, and keep the crane body in a horizontal state. During the operation of the crane body, the overturning sensor always monitors the crane body. If it detects that the crane body has a tendency to overturn, it immediately sends a signal to the igniter. After receiving the signal, the igniter ignites the fuel bunker, and the fuel bunker begins to burn. The reverse thrust generated by the combustion cooperates with the counterweight device to provide additional torque for the crane body, which is then used to stabilize the crane, prevent it from overturning, and improve the safety of crane lifting; 2. The second counterweight block can be set up to achieve the self-weight of the crane body. At the same time, when the reverse thrust device is installed later, the second counterweight block can be used as a connecting component between the connecting plate and the crane body, so that the connecting plate can rotate with the operation of the crane body; 3. The first clamping member not only serves as a connecting member between the second counterweight block and the first counterweight block, but also cooperates with the locking rod to achieve locking and limiting of the ignition part; 4. The movable part is detachably arranged relative to the ignition part, so that when the reverse thrust device is running and generates reverse thrust, a part of the force can be released, thereby reducing the damage to the device itself caused by the excessive instantaneous impact of the reverse thrust. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the crane anti-overturning system used to demonstrate the first embodiment of the present application.

[0027] Figure 2 It is a specific schematic diagram of the first embodiment of the present application for demonstrating the connection relationship between the reverse thrust device and the counterweight device.

[0028] Figure 3 yes Figure 2 A partial enlarged view of part A in the middle.

[0029] Figure 4 It is a structural schematic diagram of the first embodiment of the present application, which is used to reflect the specific connection relationship between the first counterweight block and the second counterweight block.

[0030] Description of the reference numerals: 1. crane body; 11. body; 12. boom; 13. overturning sensor; 2. support device; 21. support plate; 22. support leg; 23. follower track; 24. roller; 3. counterweight device; 31. first counterweight block; 311. placement groove; 312. through groove; 313. moving groove; 314. locking socket; 315. clamping groove; 316. locking slide groove; 32. second counterweight block; 321. first clamping member; 3 22. Second clamping member; 4. Locking member; 41. Locking rod; 42. Locking slide block; 43. Locking spring; 5. Reverse thrust device; 51. Ignition unit; 511. Ignitor; 512. Fuel tank; 513. Moving through hole; 514. Limit stop bar; 515. Placement block; 516. Locking matching hole; 52. Moving unit; 521. Moving block; 522. Moving slide bar; 523. Moving slide block; 53. Power assist plate; 54. Connecting plate; 55. Follow-up slide block. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The present application embodiment discloses a crane anti-overturning system, referring to Figure 1 The anti-overturning system includes a crane body 1, which includes a body 11, a boom 12 and a built-in slewing mechanism. The boom 12 is arranged on the body 11, and the boom 12 is used to connect the suspended object. Through its built-in slewing mechanism, the boom 12 carries the suspended object to move, thereby realizing the lifting and movement of the object.

[0033] Reference Figure 1The anti-overturning system also includes a support device 2, which includes a support plate 21 and a support leg 22. The crane body 1 is arranged on the support plate 21, and the support leg 22 is fixedly connected to the side of the support plate 21 away from the crane body 1. The support leg 22 abuts against the ground. The support device 2 is used to support the crane and to keep the crane in a horizontal and stable position. Before lifting, the site is leveled, and then the setting of the support plate 21 and the support leg 22 is further adjusted to make the crane body 1 as a whole in a horizontal and stable position.

[0034] Reference Figure 1 and 2 The anti-overturning system also includes a counterweight device 3, which includes a first counterweight block 31 and a second counterweight block 32. The first counterweight block 31 is provided with a placement groove 311, and the second counterweight block 32 is arranged in the placement groove 311. The second counterweight block 32 is detachably connected to the first counterweight block 31.

[0035] The first counterweight block 31 and the second counterweight block 32 can increase the counterweight of the crane body 1, which is beneficial to increasing the moment formed by the counterweight of the crane body 1 itself and is beneficial to improving the stability during the lifting process.

[0036] Reference Figure 1 , 2 3. In order to further improve the anti-overturning ability of the crane body 1, the anti-overturning system also includes a reverse thrust device 5, which includes an ignition part 51 and a moving part 52. The ignition part 51 includes a fuel bin 512 and an igniter 511. The igniter 511 is arranged at one side of the fuel bin 512, and the igniter 511 is used to ignite the fuel in the fuel bin 512. The moving part 52 is connected to the ignition part 51. A moving slide bar 522 is fixedly connected to the moving part 52. A moving through hole 513 for the moving slide bar 522 to be placed and slided is provided at one end of the ignition part 51 facing the moving part 52. A limited stop bar 514 is fixedly connected in the moving through hole 513. A moving slider 523 is fixedly connected to one end of the moving slide bar 522 away from the moving part 52. The moving slider 523 abuts against the limited stop bar 514. The limited stop bar 514 is made of a flexible material, and a wedge surface is provided on the side where the moving slider 523 abuts against the limited stop bar 514.

[0037] Reference Figure 2 and 3 The first counterweight block 31 is also provided with a through slot 312 and a moving slot 313, the through slot 312 is connected to the placement slot 311, the ignition part 51 is fixedly connected with a placement block 515, the moving part 52 is fixedly connected with a moving block 521, and the placement block 515 and the moving block 521 are fitted with each other. When installing the reverse thrust device 5, the placement block 515 is placed in the placement slot 311, the through slot 312 is for the moving part 52 to pass through and be placed, and the moving block 521 is located in the moving slot 313.

[0038] Reference Figure 1 , 2 3. A rollover sensing sensor 13 is fixedly connected to the bottom of the crane body 1. The rollover sensing sensor 13 is electrically connected to the igniter 511. The rollover sensing sensor 13 collects the rollover signal of the crane body 1 and transmits the signal to the igniter 511. The igniter 511 ignites after receiving the signal, and the fuel tank 512 starts to burn. The reverse thrust generated by the combustion is used to cooperate with the counterweight device 3 to provide additional torque for the crane body 1. In order to avoid the large impact force generated at the moment of combustion from causing damage to the reverse thrust device 5 itself, therefore, when the fuel tank 512 starts to ignite, the reverse thrust drives the moving part 52 to separate from the ignition part 51, and the moving slide rod 522 drives the wedge surface of the moving slider 523 to abut against the limit stop bar 514. Under the elastic deformation of the limit stop bar 514 itself, the moving slider 523 slides downward and finally abuts against the bottom wall of the ignition part 51. At the same time, the moving portion 52 moves as a whole toward the side away from the ignition portion 51 , driving the moving block 521 to move along the moving groove 313 . The moving groove 313 limits the moving path and moving distance of the moving block 521 .

[0039] Reference Figure 1 In order to reduce the thrust dispersion as much as possible after the reverse thrust device 5 is in operation, the reverse thrust device 5 further includes a connecting plate 54 and a boosting plate 53. The connecting plate 54 and the boosting plate 53 are vertically connected to each other. The boosting plate 53 is arranged on the side of the ignition part 51 away from the moving part 52. The boosting plate 53 is used to bear the thrust generated by the combustion of fuel in the fuel tank 512. The supporting device 2 also includes a follower track 23. The follower track 23 is composed of two semicircular arc tracks plugged into each other. A plurality of rollers 24 are rotatably connected to the opposite side walls of the follower track 23. The end of the connecting plate 54 away from the boosting plate 53 is fixedly connected to a follower slider 55 by bolts. The follower slider 55 is arranged in the follower track 23 and abuts against the roller 24. The assisting plate 53 blocks the thrust generated by the combustion of the fuel, reduces the leakage of the thrust, and is beneficial to improving the stability of the magnitude of the reverse thrust, so that the operation of the device is in a controllable state. At the same time, if the crane rotates continuously when lifting heavy objects, the assisting plate 53 moves through the movement of the follower slider 55 in the follower track 23, so that the assisting plate 53 moves synchronously with the reverse thrust device 5, and the relative position between the assisting plate 53 and the reverse thrust device 5 is kept stable at all times.

[0040] Reference Figure 1 and 4, the first clamping member 321 and the second clamping member 322 are symmetrically provided on opposite sides of the second counterweight 32, and a clamping groove 315 is provided on the side of the first counterweight 31 away from the crane body 1, the first clamping member 321 is clamped with the clamping groove 315, and the second clamping member 322 is connected with the connecting plate 54. After the second counterweight 32 is moved out of the first counterweight 31, the second counterweight 32 is clamped with the clamping groove 315 through the first clamping member 321, and then clamped and connected with the first counterweight 31. The second clamping member 322 on the other side is clamped with the connecting plate 54. When the crane body 1 is rotated and lifted by its own slewing mechanism, the connecting plate 54 is driven to rotate by the first counterweight 31, so that the relative position between the power-assisting plate 53 and the reverse thrust device 5 is always kept stable.

[0041] Reference Figure 2 and 3 In order to further improve the connection stability between the reverse thrust device 5 and the first counterweight 31, a locking member 4 is provided in the first counterweight 31, and the locking member 4 includes a locking rod 41, a locking slider 42 and a locking spring 43. A locking slot 316 is provided in the first counterweight 31, and the locking slider 42 is provided in the locking slot 316. One end of the locking spring 43 is connected to the locking slider 42, and the other end is connected to the slot wall of the locking slot 316. The locking rod 41 is fixedly connected to the locking slider 42. A locking socket 314 is also provided on the first counterweight 31 for the locking rod 41 to slide. One end of the locking socket 314 is connected to the clamping groove 315, and the other end of the locking socket 314 is connected to the placement groove 311. A locking matching hole 516 is provided on the placement block 515, and the locking matching hole 516 is provided for the locking rod 41 to be inserted.

[0042] When the first connecting member is inserted into the engaging groove 315, it abuts against the end of the locking rod 41, and the locking rod 41 drives the locking slider 42 to slide along the locking groove 316, while pressing the locking spring 43. At this time, the other end of the locking rod 41 extends into the locking matching hole 516, inserts and locks the placement block 515, and limits the ignition part 51. If the reverse thrust device 5 needs to be removed, the second counterweight block 32 is first disconnected from the first counterweight block 31, and the first engaging member 321 is separated from the engaging groove 315. The locking rod 41 is reset and moved under the elastic force of the locking spring 43 itself, and moves out of the placement block 515, which is convenient for the separation of the ignition part 51 and the first counterweight block 31.

[0043] The implementation principle of a crane anti-overturning system in an embodiment of the present application is: when the crane body 1 lifts a relatively light object, the weight of the crane body 1 can be increased by setting the counterweight device 3 to maintain the stability of the crane body 1 during operation.

[0044] If the crane body 1 needs to lift a relatively heavy object, the second counterweight block 32 is taken out from the placement groove 311, and then the reverse thrust device 5 is connected and installed with the first counterweight block 31, so that the moving part 52 is located in the through groove 312, the placement block 515 is located in the placement groove 311, and the moving block 521 is located in the moving groove 313. Then the follower slider 55 is installed with the connecting plate 54 and the power plate 53. After installation, the first clamping piece 321 on the second counterweight block 32 is connected with the clamping groove 315, and the second clamping piece 322 is connected with the connecting piece.

[0045] Simultaneously, when the first clamping member 321 is connected to the clamping groove 315, the locking rod 41 is driven to extend into the locking matching hole 516, further limiting the position of the ignition part 51. When the ignition part 51 is ignited, the boosting plate 53 receives the flame thrust, which is beneficial to provide the reverse thrust to the crane body 1, so as to realize the anti-overturning function and improve the safety of the lifting construction.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A crane anti-overturning system, characterized in that: The invention comprises a crane body (1), a supporting device (2), a counterweight device (3) and a reverse thrust device (5); the supporting device (2) comprises a supporting plate (21) and supporting legs (22); the crane body (1) is arranged on the supporting plate (21); the supporting legs (22) are arranged on a side of the supporting plate (21) away from the crane body (1); the supporting legs (22) are in contact with the ground; the supporting device (2) is used to support the crane body (1) and to place the crane body (1) in a horizontal and stable position; The counterweight device (3) comprises a first counterweight block (31), the first counterweight block (31) being arranged on the crane body (1), and the counterweight device (3) is used to increase the counterweight of the crane body (1); The reverse thrust device (5) is arranged on a side of the crane body (1) away from the boom (12), the reverse thrust device (5) comprises an ignition part (51), the ignition part (51) comprises a fuel bin (512) and an igniter (511), the igniter (511) is arranged on one side of the fuel bin (512), the igniter (511) is used to ignite the fuel in the fuel bin (512), a rollover sensing sensor (13) is arranged at the bottom of the crane body (1), the rollover sensing sensor (13) is electrically connected to the igniter (511), the rollover sensing sensor (13) collects the rollover signal of the crane body (1) and transmits the signal to the igniter (511), and the igniter (511) ignites after receiving the signal.

2. A crane anti-overturning system according to claim 1, characterized in that: The counterweight device (3) further comprises a second counterweight block (32); a placement groove (311) is provided in the first counterweight block (31); the second counterweight block (32) is arranged in the placement groove (311); and the second counterweight block (32) is detachably connected to the first counterweight block (31).

3. A crane anti-overturning system according to claim 2, characterized in that: The reverse thrust device (5) further comprises a moving part (52), on which a moving slide bar (522) is provided, and an end of the ignition part (51) facing the moving part (52) is provided with a moving through hole (513) for the moving slide bar (522) to be placed and slided, and the moving part (52) moves relative to the ignition part (51) along the direction of gravity.

4. A crane anti-overturning system according to claim 3, characterized in that: A limit stop bar (514) is arranged in the movable through hole (513); a movable slider (523) is arranged at one end of the movable slide rod (522) away from the movable part (52); the movable slider (523) abuts against the limit stop bar (514); the limit stop bar (514) is made of a flexible material; a wedge surface is arranged on the side of the movable slider (523) abutting against the limit stop bar (514).

5. The crane anti-overturning system according to claim 3, characterized in that: The first counterweight block (31) is also provided with a through groove (312), the through groove (312) being connected to the placement groove (311), the through groove (312) allowing the moving part (52) to pass through and be placed, and the ignition part (51) is provided with a placement block (515), the placement block (515) being placed in the placement groove (311).

6. A crane anti-overturning system according to claim 5, characterized in that: The first counterweight block (31) is also provided with a moving groove (313), the moving groove (313) is connected with the placement groove (311) and the through groove (312), the moving portion (52) is provided with a moving block (521), and the moving groove (313) is used for the moving block (521) to be placed and moved.

7. The crane anti-overturning system according to claim 5, characterized in that: The reverse thrust device (5) further comprises a connecting plate (54) and a power-assisting plate (53), wherein the connecting plate (54) and the power-assisting plate (53) are connected, and the power-assisting plate (53) is arranged on a side of the ignition part (51) away from the moving part (52). The supporting device (2) further comprises a follower track (23), and a plurality of rollers (24) are arranged on opposite side walls of the follower track (23). A follower slider (55) is arranged at one end of the connecting plate (54) away from the power-assisting plate (53), and the follower slider (55) is arranged in the follower track (23), and the follower slider (55) abuts against the roller (24).

8. A crane anti-overturning system according to claim 7, characterized in that: A first clamping piece (321) and a second clamping piece (322) are symmetrically provided on opposite sides of the second counterweight block (32); a clamping groove (315) is provided on the side of the first counterweight block (31) away from the crane body (1); the first clamping piece (321) is clamped with the clamping groove (315); and the second clamping piece (322) is connected to the connecting plate (54).

9. A crane anti-overturning system according to claim 8, characterized in that: A locking piece (4) is provided inside the first counterweight block (31), and the locking piece (4) includes a locking rod (41). A locking hole (314) is provided on the first counterweight block (31) in a horizontal direction for the locking rod (41) to slide. One end of the locking hole (314) is connected to a clamping groove (315), and the other end of the locking hole (314) is connected to a placement groove (311). A locking matching hole (516) is provided on the placement block (515), and the locking matching hole (516) is provided for the locking rod (41) to be inserted.

10. A crane anti-overturning system according to claim 9, characterized in that: The locking member (4) comprises a locking slider (42) and a locking spring (43); a locking slot (316) is provided in the first counterweight block (31); the locking slider (42) is arranged in the locking slot (316); one end of the locking spring (43) is connected to the locking slider (42) and the other end is connected to the slot wall of the locking slot (316); the locking rod (41) is fixedly connected to the locking slider (42).

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