Crane with anti-collision system

Abstract

The invention discloses a crane with an anti-collision system, relates to the technical field of cranes, and solves the technical problems that when an existing crane with an anti-collision system hoists an object, leveling is performed by depending on an instrument, and the position of a heavy object is difficult to level quickly by the instrument under the influence of the environment in the hoisting process. A detachable inhaul cable is arranged between a crane trolley and a buckle plate, a telescopic rod is arranged between the crane trolley and the buckle plate, a rotary measuring rod is arranged at the end, connected with the buckle plate, of the telescopic rod, and a rack and an assembly are arranged between the telescopic rod and a driving rod, so that the driving rod is driven to rotate by position change of the measuring rod; the corresponding driving rod rotates to change the position of the inhaul cable, so that the positions of the buckle plate and the heavy object can be adjusted in time when the buckle plate inclines, the state of the inhaul cable can be adjusted in time according to the position of the heavy object in the placing and carrying process of the heavy object, a crane trolley is guaranteed to be in a balanced state, and the situation that the whole crane is affected by instability of the crane trolley is avoided.

Description

Technical Field

[0001] The invention belongs to the field of cranes and relates to a balancing technology, in particular to a crane with an anti-collision system. Background Art

[0002] A crane is a multi-action lifting machine that performs vertical lifting and horizontal transport of heavy objects within a specific range. It is also called an overhead crane, trolley or overhead crane. In order to prevent collisions between cranes, relevant sensors and other instruments are installed on the crane's boom for detection, and an anti-collision system is also installed on the structure of the hoisted objects.

[0003] The reference patent name is: A crane with an anti-collision control system (patent announcement number: CN112978579B). The laser radar and positioning camera on the surface of the trolley are used to realize automatic leveling of the heavy objects and the gusset plate under the trolley and anti-collision during movement. An alignment camera is set on the side of the gusset plate facing the bottom surface to ensure the safety of the heavy objects when they are lowered.

[0004] However, when implementing the above technical scheme, there are the following problems: the leveling process of the trolley in the above device mainly relies on the positioning camera to take pictures and synthesize them for observation before adjustment. The synthesis and leveling by taking pictures with the positioning camera requires a certain reaction time, which has high requirements on the performance of the positioning camera, and the state is mainly judged by the projection in the photo, which has high requirements on the environment; and in the process of lifting heavy objects, if the heavy object is affected by external force and shakes, the position of the fixed cable will be affected during the shaking process. The cable fixes the position of the trolley and the heavy object. The shaking of the cable will affect the stability of the crane structure such as the trolley. At this time, it is difficult to quickly adjust the position of the cable through the positioning camera to ensure the level of the heavy object and the buckle plate during the shaking of the heavy object, thereby reducing the impact of the shaking of the heavy object.

[0005] To this end, the present invention proposes a crane with an anti-collision system. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a crane with an anti-collision system, which solves the problem that the existing cranes with anti-collision systems rely on instruments for leveling when hoisting objects, and the instruments are difficult to quickly level the position of the heavy objects due to the influence of the environment during the hoisting process.

[0007] To achieve the above object, according to an embodiment of the first aspect of the present invention, a crane with an anti-collision system is provided, comprising: a crane trolley and a pinch plate; a limiting mechanism for limiting the positions of the crane trolley and the pinch plate is provided between the crane trolley and the pinch plate, and the limiting mechanism comprises:

[0008] A plurality of cables, wherein a fixing assembly for fixing the position is arranged between the cables and the gusset plate, and adjacent cables are symmetrically arranged on a side of the gusset plate close to the crane trolley;

[0009] A plurality of telescopic rods, one end of each of which is fixedly connected to a side of the crane trolley close to the gusset plate, adjacent telescopic rods are symmetrically arranged, the other end of each of the telescopic rods is rotatably connected to a measuring rod, a clamping assembly is arranged between each of the measuring rods and the gusset plate, and the cross-section of each of the telescopic rods decreases in size toward the gusset plate side.

[0010] A plurality of driving rods, the surfaces of which are fixedly connected to one end of the cable, the ends of the driving rods away from the edge of the crane trolley are slidably connected to driving gears, the interiors of the telescopic rods are slidably connected to transfer racks, the surfaces of the measuring rods are fixedly connected to a plurality of driving teeth, the spacings between adjacent driving teeth are equal, the driving teeth mesh with the transfer racks, the interior of the crane trolley is slidably connected to a plurality of working racks, and a transmission assembly is provided between the transfer racks and the working racks.

[0011] Optionally, the fixing assembly includes a fixing buckle and an engaging member, one side of the fixing buckle is a plane, and the cross-section of the other side is two symmetrical arcs, and the center of the arc is on the plane side.

[0012] Optionally, both sides of the engaging member are arc-shaped, the arc-shaped side of the fixing buckle and the arcs on both sides of the engaging member are adapted to the cable, and a plurality of fixing grooves are provided on the surface of the buckle plate.

[0013] Optionally, the fastening assembly includes a fastening block fixed at one end of the measuring rod, the diameter of the fastening block is larger than the diameter of the telescopic rod, a fastening groove is provided on the surface of the buckle plate, the fastening groove and the fastening block are adapted to each other, a fastening column is slidably connected inside the fastening groove, and two fastening arcs are obliquely slidably connected to the fastening column on the side away from the telescopic rod; the two fastening arcs are symmetrically arranged relative to the center of the fastening column.

[0014] Optionally, the transmission assembly includes a transmission shaft fixed to one end of the transfer rack and the action rack, and a transmission rod is slidably connected inside the crane trolley. A transmission groove is provided on the surface of the transmission rod, and the transmission groove is adapted to the transmission shaft.

[0015] Optionally, a moving shaft is fixedly connected to one side of the transmission rod away from the transmission shaft, a moving ring is fixedly connected to the inside of the crane trolley, the moving shaft and the moving ring are adapted to each other, and an angle exists between the moving ring and the surface of the crane trolley.

[0016] Optionally, a limiting groove is provided on the surface of the driving rod, a limiting shaft is fixedly connected to the interior of the driving gear, and the limiting shaft is slidably connected to the limiting groove.

[0017] Optionally, the crane trolley is internally rotatably connected with a plurality of reversing cone wheels, the reversing cone wheels are meshed with each other, a reversing rod is fixedly connected to one side of the reversing cone wheel close to the driving rod, one side of the reversing rod is fitted with a side of the driving rod close to the driving gear, a plurality of reversing grooves are evenly provided on the surface of the reversing rod, and the reversing grooves are adapted to the limit shaft.

[0018] Optionally, a push rod is slidably connected to one side of the working rack close to the driving gear, a guide column is fixedly connected to one side of the working rack away from the telescopic rod, a plurality of guide grooves are provided inside the crane trolley, and the guide columns are adapted to the guide grooves.

[0019] Optionally, the guide groove includes horizontal grooves on both sides and multiple through grooves between the horizontal grooves. The guide groove is trapezoidal as a whole, but the through groove is inclined toward the driving gear direction, and the depth of the through groove decreases toward the driving gear direction. The depth of the horizontal groove on one side close to the driving gear is lower than that of the horizontal groove on the other side.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: a detachable cable is arranged between the crane trolley and the buckle plate, and a telescopic rod is arranged between the two, a rotatable measuring rod is arranged on the end of the telescopic rod connected to the buckle plate, and a rack and an assembly are arranged between the telescopic rod and the driving rod, so that the position change of the measuring rod drives the driving rod to rotate, and then when one side of the buckle plate tilts, the measuring rod will rotate, and the corresponding driving rod will rotate to change the position of the cable, and then the position of the buckle plate and the heavy object can be adjusted in time when the buckle plate tilts, and the state of the cable can be adjusted in time according to the position of the heavy object during the placement and transportation of the heavy object, so as to ensure that the crane trolley is in a balanced state and avoid the instability of the crane trolley affecting the overall crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural stereogram of the present invention;

[0022] Figure 2 is a three-dimensional structural cross-sectional view of the driving rod of the present invention;

[0023] Figure 3 It is a three-dimensional structural cross-sectional view of the reversing cone wheel of the present invention;

[0024] Figure 4 It is a three-dimensional structural cross-sectional view of the card agglomerate of the present invention;

[0025] Figure 5 For the present invention Figure 2 A magnified view of the local structure at point A in the middle;

[0026] Figure 6 For the present invention Figure 4 A magnified view of the local structure at C in the middle;

[0027] Figure 7 For the present invention Figure 3 A magnified view of the local structure at point B in the middle.

[0028] In the figure: 1. Crane trolley; 2. Clamp plate;

[0029] 31. Cable; 32. Telescopic rod; 33. Measuring rod; 34. Driving rod; 35. Driving gear; 36. Transfer rack; 37. Driving gear; 38. Working rack;

[0030] 41. fixing buckle; 42. fitting piece; 43. fixing groove;

[0031] 51. a knot block; 52. a knot groove; 53. a knot column; 54. a knot arc;

[0032] 61. transmission shaft; 62. transmission rod; 63. transmission groove; 64. moving shaft; 65. moving ring;

[0033] 71. Limiting groove; 72. Limiting shaft;

[0034] 81. reversing cone wheel; 82. reversing rod; 83. reversing groove; 84. pushing rod; 85. guide column; 86. guide groove. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1-7 As shown, a crane with an anti-collision system includes a crane trolley 1 and a gusset plate 2;

[0037] It should be noted that the crane trolley 1 is an important component of a crane with an anti-collision system, and is usually installed on the main beam or track of the crane for horizontal movement along the track; the side of the gusset plate 2 away from the crane trolley 1 can also fix heavy objects as in the reference patent; the surfaces of the crane trolley 1 and the gusset plate 2 are provided with cameras and laser radars with the same functions at the same positions as in the reference patent, so as to realize anti-collision between the crane trolley 1, the gusset plate 2 and the heavy objects;

[0038] A limiting mechanism for limiting the positions of the crane trolley 1 and the gusset plate 2 is provided between the crane trolley 1 and the gusset plate 2, and the limiting mechanism includes:

[0039] A plurality of cables 31, wherein a fixing assembly for fixing the position is arranged between the cables 31 and the gusset plate 2, and adjacent cables 31 are symmetrically arranged on one side of the gusset plate 2 close to the crane trolley 1;

[0040] A plurality of telescopic rods 32, one end of each of the telescopic rods 32 is fixedly connected to a side of the crane trolley 1 close to the gusset plate 2, adjacent telescopic rods 32 are symmetrically arranged, the other end of each of the telescopic rods 32 is rotatably connected to a measuring rod 33, a clamping assembly is arranged between each of the measuring rods 33 and the gusset plate 2, and the cross-section of each of the telescopic rods 32 decreases in size toward the gusset plate 2;

[0041] It should be noted that the telescopic rod 32 includes columnar rods of different diameters, the diameter of the columnar rods is continuously reduced from the crane trolley 1 to the gusset plate 2, and adjacent columnar rods are slidably connected;

[0042] A plurality of driving rods 34, each of the surfaces of the driving rods 34 being fixedly connected to one end of the cable 31;

[0043] It should be noted that a spiral groove is provided on the surface of the driving rod 34, and the spiral groove is adapted to the cable 31. A rope guide (not shown in the figure) is provided between the cable 31 and the spiral groove. The rope guide is clamped between the edge of the spiral groove and the cable 31 through a groove and a screw. When the driving rod 34 rotates, the rope guide slides on the driving rod 34, driving the cable 31 to change its position, ensuring that the cable 31 is wound into the spiral groove. The rope guide is generally used to realize the winding of the cable 31 on the overhead crane on the spiral groove;

[0044] The end of the driving rod 34 away from the edge of the crane trolley 1 is slidably connected to a driving gear 35, the interior of the telescopic rod 32 is slidably connected to a transfer rack 36, the surface of the measuring rod 33 is fixedly connected to a plurality of driving teeth 37, the spacing between adjacent driving teeth 37 is equal, the driving teeth 37 mesh with the transfer rack 36, the interior of the crane trolley 1 is slidably connected to a plurality of working racks 38, the working racks 38 are meshed with the driving gear 35 after sliding, and a transmission assembly is provided between the transfer rack 36 and the working rack 38;

[0045] In actual application, the crane with the anti-collision system has a detachable cable 31 between the crane trolley 1 and the gusset plate 2, and a telescopic rod 32 is provided between the two. A rotatable measuring rod 33 is provided at one end of the telescopic rod 32 connected to the gusset plate 2, and a rack and components are provided between the telescopic rod 32 and the driving rod 34, so that the position change of the measuring rod 33 drives the driving rod 34 to rotate, and then when one side of the gusset plate 2 is tilted, the measuring rod 33 will rotate, and the corresponding driving rod 34 will rotate to change the position of the cable 31, so that the position of the gusset plate 2 and the heavy object can be adjusted in time when the gusset plate 2 is tilted. The state of the cable 31 can be adjusted in time according to the position of the heavy object during the placement and transportation of the heavy object, so as to ensure that the crane trolley 1 is in a balanced state and avoid the instability of the crane trolley 1 affecting the overall crane;

[0046] In some specific embodiments, the fixing assembly includes a fixing buckle 41 and a fitting member 42. One side of the fixing buckle 41 is a plane, and the cross section of the other side is two symmetrical arcs, and the center of the arc is on the plane side; the two sides of the fitting member 42 are arc-shaped, and the arcs on one side of the fixing buckle 41 and the arcs on both sides of the fitting member 42 are adapted to the cable 31. A plurality of fixing grooves 43 are provided on the surface of the buckle plate 2, and the cable 31 passes through the fixing grooves 43.

[0047] It should be noted that there is a fitting column in the middle of the fixing groove 43, and the four sides of the fitting column that are in contact with the cable 31 are all arc-shaped; that is, after one end of the cable 31 passes through the fixing groove 43, it overlaps with the cable 31 at the upper end of the buckle plate 2, and the cable 31 forms an arc inside the fixing groove 43. The overlapping cable 31 is placed in the arc inside the fixing buckle 41 to limit the position of the cable 31, and the fitting 42 is inserted between the cables 31 again by a tool to limit the position between the cables 31, so that the cable 31 is fixed to the buckle plate 2; the cable 31 is flexibly fixed, which is convenient for the subsequent replacement of the buckle plate 2 according to the shape or size of the heavy object;

[0048] In some specific embodiments, the above-mentioned fastening assembly includes a fastening block 51 fixed at one end of the measuring rod 33, the diameter of the fastening block 51 is larger than the diameter of the telescopic rod 32, a fastening groove 52 is opened on the surface of the gusset plate 2, the fastening groove 52 and the fastening block 51 are adapted, a fastening column 53 is slidably connected inside the fastening groove 52, and two fastening arcs 54 are slidably connected to the side of the fastening column 53 away from the telescopic rod 32; the fastening arcs 54 are symmetrically arranged relative to the center of the fastening column 53;

[0049] It should be noted that a sliding shaft is fixedly connected to one side of the locking arc 54 close to the locking column 53, and a sliding groove is provided on the surface of the locking column 53. The sliding groove is adapted to the sliding shaft, and an angle exists between the cross section of the sliding groove and the diameter of the locking column 53.

[0050] In some specific embodiments, the transmission assembly includes a transmission shaft 61 fixed to one end of the transfer rack 36 and the action rack 38, and a transmission rod 62 is slidably connected inside the crane trolley 1, and a transmission groove 63 is formed on the surface of the transmission rod 62, and the transmission groove 63 is adapted to the transmission shaft 61;

[0051] It should be noted that the transmission grooves 63 in the transmission rod 62 adapted to different structural surfaces have different lengths, and the transmission groove 63 that fits the transmission shaft 61 at one end of the transfer rack 36 is shorter than the transmission groove 63 at the other side;

[0052] In a further embodiment, a moving shaft 64 is fixedly connected to one side of the transmission rod 62 away from the transmission shaft 61, and a moving ring 65 is fixedly connected to the interior of the crane trolley 1. The moving shaft 64 and the moving ring 65 are adapted to each other, and an angle exists between the moving ring 65 and the surface of the crane trolley 1;

[0053] In some specific embodiments, a limiting groove 71 is provided on the surface of the driving rod 34, and a limiting shaft 72 is fixedly connected inside the driving gear 35, and the limiting shaft 72 is slidably connected to the limiting groove 71;

[0054] In some specific embodiments, the crane trolley 1 is internally rotatably connected with a plurality of reversing cone wheels 81, the reversing cone wheels 81 mesh with each other, and a reversing rod 82 is fixedly connected to one side of the reversing cone wheel 81 close to the driving rod 34, and one side of the reversing rod 82 is in contact with one side of the driving rod 34 close to the driving gear 35, and a plurality of reversing grooves 83 are evenly formed on the surface of the reversing rod 82, and the reversing grooves 83 are adapted to the limit shaft 72;

[0055] It should be noted that a spring is provided between the side of the driving gear 35 away from the reversing cone wheel 81 and the crane trolley 1. One end of the spring is fixed to the inside of the crane trolley 1, and the other end slides on the surface of the driving gear 35 through shafts of different diameters (not shown in the figure) and grooves (not shown in the figure) adapted thereto. When the spring is in a relaxed state, the limiting shaft 72 on the surface of the driving gear 35 is simultaneously fitted with the reversing groove 83 and the limiting groove 71.

[0056] It should be noted that a motor is fixedly connected to the surface of the crane trolley 1, and the motor is electrically connected to an external power supply. One end of the motor output shaft is fixedly connected to a coupling (not shown in the figure), and one end of the connecting shaft is fixedly connected to a driving rod 34 on one side.

[0057] In a further embodiment, a push rod 84 is slidably connected to one side of the working rack 38 close to the driving gear 35, a guide column 85 is fixedly connected to one side of the working rack 38 away from the telescopic rod 32, and a plurality of guide grooves 86 are provided inside the crane trolley 1, and the guide column 85 is adapted to the guide groove 86;

[0058] It should be noted that a limiting shaft is fixedly connected to one side of the push rod 84 close to the working rack 38, and a limiting groove is provided on the surface of the working rack 38, and the limiting shaft is adapted to the limiting groove;

[0059] In a further embodiment, the guide groove 86 includes horizontal grooves on both sides and multiple through grooves between the horizontal grooves. The guide groove 86 is trapezoidal in shape as a whole, but the through groove is inclined toward the driving gear 35, and the depth of the through groove decreases toward the driving gear 35. The depth of the horizontal groove on one side close to the driving gear 35 is lower than that of the horizontal groove on the other side.

[0060] The working principle of the present invention is as follows: a heavy object is fixed on the surface of the gusset plate 2, and then the motor is started. The motor causes the driving rod 34 to rotate, which in turn drives the reversing cone wheel 81 to rotate, causing the driving rods 34 on the four sides to rotate simultaneously, driving the cable 31 to contract, and changing the height of the heavy object. If the heavy object and the gusset plate 2 are tilted, the measuring rod 33 on the surface of the telescopic rod 32 will be driven to rotate. The measuring rod 33 drives the transfer rack 36 to slide by driving the tooth 37, and then drives the transmission rod 62 to slide, causing the action rack 38 to slide toward the driving gear 35. During the sliding process of the action rack 38, the pushing rod 84 pushes the driving gear 35, causing the limiting axis on the surface of the driving gear 35 to only fit with the limiting groove, and the action rack 38 drives the driving gear 35 to rotate. At this time, the cable 31 is extended, causing the gusset plate 2 on this side to return to a horizontal state. During the recovery process, the measuring rod 33 reverses, causing the transfer rack 36 and the action rack 38 to reset, and the driving gear 35 is reset under the action of the spring.

[0061] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A crane with an anti-collision system, characterized in that: include: Crane trolley (1) and gusset plate (2); A limiting mechanism for limiting the positions of the crane trolley (1) and the gusset plate (2) is provided between the crane trolley (1) and the gusset plate (2), and the limiting mechanism comprises: A plurality of cables (31), wherein a fixing assembly for fixing the position is arranged between the cables (31) and the pinch plate (2), and adjacent cables (31) are symmetrically arranged on a side of the pinch plate (2) close to the crane trolley (1); A plurality of telescopic rods (32), one end of each of the telescopic rods (32) is fixedly connected to a side of the crane trolley (1) close to the buckle plate (2), and adjacent telescopic rods (32) are symmetrically arranged. The other end of each of the telescopic rods (32) is rotatably connected to a measuring rod (33), and a clamping assembly is arranged between each of the measuring rods (33) and the buckle plate (2). The cross-section of each of the telescopic rods (32) decreases in size toward the buckle plate (2). A plurality of driving rods (34), the surfaces of the driving rods (34) are fixedly connected to one end of the cable (31), the ends of the driving rods (34) away from the edge of the crane trolley (1) are slidably connected to a driving gear (35), the interior of the telescopic rod (32) is slidably connected to a transfer rack (36), the surface of the measuring rod (33) is fixedly connected to a plurality of driving teeth (37), the spacing between adjacent driving teeth (37) is equal, the driving teeth (37) are meshed with the transfer rack (36), the interior of the crane trolley (1) is slidably connected to a plurality of action racks (38), and a transmission assembly is provided between the transfer rack (36) and the action rack (38).

2. A crane with an anti-collision system according to claim 1, characterized in that: The fixing assembly comprises a fixing buckle (41) and an engaging member (42); one side of the fixing buckle (41) is a plane, and the cross section of the other side is two symmetrical arcs, with the center of the arc being on the plane side.

3. A crane with an anti-collision system according to claim 2, characterized in that: Both sides of the embedding piece (42) are arc-shaped, and the arc-shaped side of the fixing buckle (41) and the arc-shaped sides of the embedding piece (42) are both adapted to the pull cable (31). The buckle plate (2) is provided with a plurality of fixing grooves (43) on its surface.

4. A crane with an anti-collision system according to claim 1, characterized in that: The fastening assembly comprises a fastening block (51) fixed at one end of the measuring rod (33), the diameter of the fastening block (51) is larger than the diameter of the telescopic rod (32), a fastening groove (52) is provided on the surface of the buckle plate (2), the fastening groove (52) and the fastening block (51) are adapted to each other, a fastening column (53) is slidably connected inside the fastening groove (52), and two fastening arcs (54) are obliquely slidably connected to the side of the fastening column (53) away from the telescopic rod (32); the two fastening arcs (54) are symmetrically arranged relative to the center of the fastening column (53).

5. The crane with an anti-collision system according to claim 1, characterized in that: The transmission assembly comprises a transmission shaft (61) fixed at one end of the transfer rack (36) and the action rack (38); a transmission rod (62) is slidably connected inside the crane trolley (1); a transmission groove (63) is formed on the surface of the transmission rod (62); and the transmission groove (63) is adapted to the transmission shaft (61).

6. A crane with an anti-collision system according to claim 5, characterized in that: A moving shaft (64) is fixedly connected to the side of the transmission rod (62) away from the transmission shaft (61), and a moving ring (65) is fixedly connected to the interior of the crane trolley (1); the moving shaft (64) and the moving ring (65) are adapted to each other, and an angle exists between the moving ring (65) and the surface of the crane trolley (1).

7. The crane with an anti-collision system according to claim 1, characterized in that: A limiting groove (71) is provided on the surface of the driving rod (34), a limiting shaft (72) is fixedly connected inside the driving gear (35), and the limiting shaft (72) is slidably connected to the limiting groove (71).

8. The crane with an anti-collision system according to claim 1, characterized in that: The crane trolley (1) is internally rotatably connected with a plurality of reversing cone wheels (81), the reversing cone wheels (81) mesh with each other, a reversing rod (82) is fixedly connected to one side of the reversing cone wheel (81) close to the driving rod (34), one side of the reversing rod (82) is in contact with a side of the driving rod (34) close to the driving gear (35), a plurality of reversing grooves (83) are evenly formed on the surface of the reversing rod (82), and the reversing grooves (83) are adapted to the limit shaft (72).

9. The crane with an anti-collision system according to claim 1, characterized in that: A push rod (84) is slidably connected to the side of the working rack (38) close to the driving gear (35), and a guide column (85) is fixedly connected to the side of the working rack (38) away from the telescopic rod (32). A plurality of guide grooves (86) are provided inside the crane trolley (1), and the guide columns (85) are adapted to the guide grooves (86).

10. A crane with an anti-collision system according to claim 9, characterized in that: The guide groove (86) comprises horizontal grooves on both sides and a plurality of through grooves between the horizontal grooves. The guide groove (86) is trapezoidal in shape as a whole, but the through groove is inclined in the direction of the driving gear (35), and the depth of the through groove decreases toward the driving gear (35). The depth of the horizontal groove on the side close to the driving gear (35) is lower than that of the horizontal groove on the other side.

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