An intelligent safety monitoring system for a bridge crane

Abstract

The present application relates to the technical field of bridge crane, in particular to a kind of bridge crane intelligent safety monitoring system, including bridge crane frame, rotationally installed with pivot on bridge crane frame, winding roller is installed on pivot, still including the first motor of driving pivot rotation, pivot one end is fixedly connected with rotating plate, still including the first brake assembly for braking rotating plate and the second brake assembly for braking pivot, the first brake assembly works simultaneously with the second brake assembly work;The present application can be more effectively braked to pivot by the cooperation braking of first brake block and second brake block simultaneously, to keep the safety of bridge crane.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge cranes, and in particular to an intelligent safety monitoring system for bridge cranes. Background Art

[0002] Bridge cranes are primarily used for lifting operations and are often used to lift containers at ports and docks. Typically, a container has locks at the four corners of its top, and the crane's spreader has corresponding locking tongues. The tongues are inserted into the locks and rotated a certain angle to lock with them, allowing subsequent lifting operations.

[0003] If the driving source motor used to lift the cargo fails after it is lifted, the cargo will fall under the action of its gravity. At this time, the rotating shaft driven by the driving source motor will also rotate rapidly and uncontrollably. In order to prevent the cargo from falling to the ground and being damaged, an emergency brake assembly needs to be designed for safe emergency braking. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent safety monitoring system for a bridge crane to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An intelligent safety monitoring system for a bridge crane includes a bridge crane, a rotating shaft rotatably mounted on the bridge crane, a winding roller mounted on the rotating shaft, a first motor driving the rotating shaft, a rotating plate fixedly connected to one end of the rotating shaft, a first brake assembly for braking the rotating plate, and a second brake assembly for braking the rotating shaft, wherein the first brake assembly drives the second brake assembly to operate simultaneously;

[0007] The first brake assembly includes a rotating wheel, a first gear, a screw rod, a guide rod, a moving block, and a first brake block. One end of the screw rod is fixedly connected to a second gear meshing with the first gear. The moving block is threadedly connected to the screw rod, and the moving block is slidably connected to the guide rod. The moving block is fixedly connected to the first brake block. The rotating wheel is fixedly connected to the rotating shaft. The first gear is rotatably connected to the rotating wheel. A clutch block is movably connected to the rotating wheel. When the rotating shaft speed is greater than a set value, the clutch block is abutted against the first gear by centrifugal force, driving the first gear to rotate.

[0008] The second brake assembly includes a fixed plate, a push rod, a plate, a compression spring, a roller, and a second brake block. The first brake block is provided with a groove on the side close to the rotating shaft, and the inner wall of the groove on the side away from the rotating plate is an arc-shaped concave surface. The middle part of the push rod is slidably connected to the fixed plate, and the plate and the second brake block are respectively fixedly connected to the two ends of the push rod. The compression spring sleeve is provided on the push rod, and the two ends of the compression spring are respectively connected to the fixed plate and the plate. The roller is installed on the plate, and the roller is located in the groove.

[0009] Preferably, the outer ring wall of the rotating wheel is provided with a plurality of sliding grooves, the clutch block is slidably arranged in the sliding grooves, and further comprises a spring arranged in the sliding grooves, the two ends of the spring are respectively fixedly connected to the clutch block and the inner wall of the sliding groove.

[0010] Preferably, it also includes two parallel side plates fixedly connected to the bridge hanger, the rotating shaft is rotatably connected between the two side plates, the first motor is installed on one of the side plates, and the output shaft of the first motor is coaxially connected to the other end of the rotating shaft.

[0011] Preferably, a shell is installed on the other side plate, one end of the rotating shaft extends into the shell, and the first brake assembly and the second brake assembly are both located in the shell.

[0012] Preferably, the screw rod is rotatably connected in the housing, the guide rod is fixedly connected in the housing, and the screw rod, the guide rod and the rotating shaft are parallel to each other.

[0013] Preferably, the fixing plate is fixedly connected to the inner wall of the shell, and an arc groove is provided on a side of the second brake block close to the rotating shaft.

[0014] Preferably, it also includes a lifting rope and a lifting device, the lifting device includes a main beam and a support arm that can be moved and adjusted along the length direction of the main beam, one end of the lifting rope is connected to the winding roller, and the other end of the lifting rope is connected to the main beam, and the end of the support arm away from the main beam is fixedly connected to the mounting seat, and a locking tongue is provided under the mounting seat.

[0015] Preferably, a rotating rod is rotatably connected inside the mounting seat, and the bottom end of the rotating rod extends to the bottom of the mounting seat and is fixedly connected to the lock tongue. It also includes a container, and lock heads compatible with the lock tongue are installed at the four corners of the top of the container. A pressure sensor is installed on the top of the lock tongue, and it also includes a second motor that drives the rotating rod to rotate.

[0016] Preferably, a second through hole is provided on the rotating rod, a cylinder is installed in the mounting seat, and the extended end of the cylinder is coaxially connected to the locking rod. When the lock tongue is extended into the lock head and rotated to lock, the second through hole is aligned with the locking rod, and the cylinder pushes the locking rod into the second through hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] First, a first brake assembly and a second brake assembly are set. When the first motor of the container lifting drive source fails and the rotation speed is out of control, the first brake assembly and the second brake assembly can perform emergency braking. Specifically, the first brake assembly works, so that the first brake block moves toward the turntable. When the first brake block moves toward the turntable, the arc-shaped concave surface will move to the bottom of the roller, thereby lifting the roller, the push rod and the second brake block. When the first brake block moves to the turntable position, the second brake block just moves to the shaft position, that is, while the first brake block brakes the turntable, the second brake block also brakes the shaft; by the simultaneous cooperation of the first brake block and the second brake block for braking, the shaft can be braked more effectively, thereby maintaining the safety of the bridge crane.

[0019] Secondly, the first brake assembly and the second brake assembly do not require any electronic components during the braking process and do not consume electrical energy.

[0020] Finally, when the lock tongue extends into the lock head and rotates to lock, the second through hole aligns with the lock rod, and the cylinder pushes the lock rod into the second through hole. At this time, it can prevent the driver from accidentally touching the rod and causing it to rotate, thereby unlocking the lock tongue and the lock head and avoiding the occurrence of malfunctions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the overall structural diagrams of the present invention.

[0022] Figure 2 Schematic diagram of the internal structure of the shell in the present invention.

[0023] Figure 3 It is a structural schematic diagram of the second brake assembly and the first brake pad in the present invention.

[0024] Figure 4 It is a structural schematic diagram of the rotating wheel and the first gear in the present invention.

[0025] Figure 5 Schematic diagram of the internal structure of the mounting base in the present invention.

[0026] Figure 6 It is a structural schematic diagram of the container in the present invention.

[0027] The meanings of the numbers in the figure are as follows: 10, bridge hanger; 11, side plate; 12, rotating shaft; 13, winding roller; 14, lifting rope; 15, first motor; 20, main beam; 21, supporting arm; 30, housing; 31, rotating plate; 32, rotating wheel; 320, slide; 321, spring; 322, clutch block; 33, first gear; 340, second gear; 341, screw rod; 342, guide rod; 343, moving block; 35 , first brake block; 351, groove; 352, arc-shaped concave surface; 360, fixed plate; 361, push rod; 362, plate; 363, compression spring; 364, roller; 37, second brake block; 4, mounting seat; 5, lock tongue; 60, rotating rod; 600, first through hole; 601, second through hole; 61, second motor; 62, pressure sensor; 63, locking rod; 64, cylinder; 70, container; 71, lock head. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0031] The present invention provides a technical solution:

[0032] A bridge crane intelligent safety monitoring system, please refer to Figures 1-6, including a bridge hanger 10, a rotating shaft 12 rotatably installed on the bridge hanger 10, specifically, two parallel side plates 11 are fixedly connected to the bridge hanger 10, the rotating shaft 12 is rotatably connected between the two side plates 11, a winding roller 13 is installed on the rotating shaft 12, and also includes a first motor 15 that drives the rotating shaft 12 to rotate.

[0033] The first motor 15 is mounted on one of the side plates 11 by bolts, and the output shaft of the first motor 15 is coaxially connected to the other end of the rotating shaft 12 .

[0034] A sling is provided below the bridge hanger 10, a sling rope 14 is bolted to the winding roller 13, and one end of the sling rope 14 away from the winding roller 13 is connected to the sling. The connection between the sling rope 14, the winding roller 13 and the sling is conventional technology.

[0035] Of course, according to actual needs, a limiting ring plate can be fixedly installed in the middle of a winding roller 13, so that the winding roller 13 can be divided into two sections, and two lifting ropes 14 can be retracted and released at the same time; in addition, two groups of winding rollers 13 can be set, so that four lifting ropes can be retracted and released at the same time, which is convenient for lifting the sling. This design also belongs to the conventional existing technology of existing bridge cranes.

[0036] See Figure 2 A rotating plate 31 is fixedly connected to one end of the rotating shaft 12, and further includes a first brake assembly for braking the rotating plate 31 and a second brake assembly for braking the rotating shaft 12. When the first brake assembly is in operation, the second brake assembly is driven to operate simultaneously;

[0037] The first brake assembly includes a rotating wheel 32, a first gear 33, a screw rod 341, a guide rod 342, a moving block 343, and a first brake block 35. One end of the screw rod 341 is fixedly connected to the second gear 340 that meshes with the first gear 33. The moving block 343 is threadedly connected to the screw rod 341, and the moving block 343 is slidingly connected to the guide rod 342. The moving block is fixedly connected to the first brake block; the first brake block 35 is fixedly connected to the side of the moving block close to the rotating shaft 12.

[0038] The rotating wheel 32 is fixedly connected to the rotating shaft 12, and the first gear 33 is rotatably connected to the rotating wheel 32. The rotating wheel 32 is movably connected to a clutch block 322. When the rotating shaft 12 rotates at a speed greater than a set value (when the sling drives the rotating shaft 12 to rotate when it falls), the clutch block 322 abuts against the first gear 33 under the centrifugal force, driving the first gear 33 to rotate.

[0039] When the first motor 15 fails and loses control, causing the speed of the rotating shaft 12 to continue to increase, once the speed of the rotating shaft 12 is greater than the set value, the set value is set according to the actual situation. When the speed of the rotating shaft 12 is greater than the set value, it can just drive the clutch block 322 to abut against the first gear 33 under centrifugal force, driving the first gear 33 to rotate; the first gear 33 is driven to rotate by the clutch block 322, and since the first gear 33 is engaged with the second gear 340, it drives the second gear 340 and the screw rod 341 to rotate, and the rotation of the screw rod 341 drives the moving block 343 to move toward the rotating plate 31, thereby driving the first brake block 35 to move toward the rotating plate 31. When the first brake block 35 moves to the position of the rotating plate 31, the rotating plate 31 can be braked, thereby braking the rotating shaft 12.

[0040] The braking process does not require any electronic components such as motors and cylinders. The rotational force of the rotating shaft 12 itself is used as the driving source to achieve the braking operation of the first brake assembly without consuming any electrical energy.

[0041] It should be supplemented that a shell 30 is mounted on the other side plate 11 . The interior of the shell is hollow, and one end of the rotating shaft 12 extends into the shell 30 . Both the first brake assembly and the second brake assembly are located in the shell 30 .

[0042] The screw rod 341 is rotatably connected in the housing 30 , and the guide rod 342 is fixedly connected in the housing 30 . The screw rod 341 , the guide rod 342 and the rotating shaft 12 are parallel to each other.

[0043] According to actual needs, the first brake assembly can be arranged into two groups that are symmetrical in upper and lower directions.

[0044] Specifically, a plurality of sliding grooves 320 are provided on the outer ring wall of the rotating wheel 32. Three sliding grooves 320 are preferably provided in the present invention. The clutch block 322 is slidably provided in the sliding groove 320. It also includes a spring 321 provided in the sliding groove 320. The two ends of the spring 321 are fixedly connected to the clutch block 322 and the inner wall of the sliding groove 320 respectively; when the rotation speed of the rotating shaft 12 is greater than the set value, the clutch block 322 slides out of the sliding groove 320 under the action of centrifugal force and abuts against the inner ring wall of the first gear 33, thereby driving the first gear 33 to rotate.

[0045] The second brake assembly includes a fixed plate 360, a push rod 361, a plate 362, a compression spring 363, a roller 364, and a second brake block 37. The first brake block 35 is provided with a groove 351 on the side close to the rotating shaft 12, and the inner wall of the groove 351 on the side away from the rotating plate 31 is an arc-shaped concave surface 352. The middle part of the push rod 361 is slidingly connected to the fixed plate 360, and the fixed plate 360 ​​is fixedly connected to the inner wall of the shell 30. The plate 362 and the second brake block 37 are respectively fixedly connected to the two ends of the push rod 361. The second brake block 37 is located on one side of the rotating shaft 12. The compression spring 363 is sleeved on the push rod, and the two ends of the compression spring are respectively fixedly connected to the fixed plate 360 ​​and the plate 362. The roller 364 is installed on the plate 362, the roller 364 is located in the groove 351, and the bottom of the roller 364 abuts against the groove 351.

[0046] The bottom horizontal surface of the inner wall of the groove 351 is connected to the arc-shaped concave surface 352. When the first motor has not failed and the speed of the rotating shaft 12 is normal, the bottom of the roller 364 abuts against the bottom horizontal surface of the inner wall of the groove 351; when the first motor fails and the speed of the rotating shaft 12 is greater than the set value, the first brake assembly works, thereby causing the first brake block 35 to move toward the rotating plate 31. When the first brake block 35 moves toward the rotating plate 31, the arc-shaped concave surface 352 will move to the bottom of the roller 364, thereby lifting the roller 364, the push rod 361 and the second brake block 37. When the first brake block 35 moves to the position of the rotating plate 31, the second brake block 37 just moves to the position of the rotating shaft 12, that is, while the first brake block 35 brakes the rotating plate 31, the second brake block 37 also brakes the rotating shaft 12; by the simultaneous cooperation of the first brake block 35 and the second brake block 37, the rotating shaft 12 can be braked more effectively, thereby maintaining the safety of the bridge crane.

[0047] When the first brake block 35 brakes the rotating plate 31 and the second brake block 37 brakes the rotating shaft 12, the rotation speed of the rotating shaft 12 will decrease. When the rotation speed of the rotating shaft 12 decreases to equal to or less than the set value, the centrifugal force exerted on the clutch block becomes smaller and it will slide into the slide groove 320. At this time, the first gear 33 will not stop rotating immediately under the action of the original rotating force, and the first gear 33 will continue to rotate for a period of time. During this process, the first brake block 35 and the second brake block 37 can continue to brake the rotating shaft 12 to stop.

[0048] The first brake assembly and the second brake assembly do not require any electronic components during the braking process and do not consume electrical energy.

[0049] An arcuate groove is provided on a side of the second brake block 37 close to the rotating shaft 12 . The arcuate groove enables the second brake block 37 to better fit the rotating shaft 12 , thereby facilitating braking of the rotating shaft.

[0050] The sling includes a main beam 20 and an arm 21 that can be moved and adjusted along the length direction of the main beam 20. One end of the sling rope 14 is connected to the winding roller 13, and the other end of the sling rope 14 is connected to the main beam 20. The end of the arm 21 away from the main beam 20 is fixedly connected to the mounting seat 4, and a locking tongue 5 is provided under the mounting seat 4.

[0051] The lifting device of the Chinese bridge crane of the present invention is used to lift a container 70 , and the four corners of the top of the container 70 are equipped with lock heads 71 ​​that are compatible with the lock tongue 5 .

[0052] A rotating rod 60 is rotatably connected inside the mounting base 4. The rotating rod 60 is vertically arranged. The bottom end of the rotating rod 60 extends to the bottom of the mounting base 4 and is fixedly connected to the lock tongue 5. A pressure sensor 62 is installed on the top of the lock tongue 5. It also includes a second motor 61 that drives the rotating rod 60 to rotate. The second motor 61 is installed in the mounting base 4, and the output shaft of the second motor 61 is coaxially connected to the top of the rotating rod 60.

[0053] When the lock tongue 5 is inserted into the lock head 71, the second motor 61 works to drive the rotating rod 60 and the lock tongue 5 to rotate 90°. At this time, the lock tongue 5 is locked with the lock head 71. When the container is lifted, the lock tongue 5 rises and abuts against the top of the inner wall of the lock head 71. The pressure sensor 62 detects the pressure. The container is first lifted slightly. The weight of the container can be detected by the pressure sensor 62 to see whether the container is overweight. A display is installed in the cab of the bridge crane. The display and the pressure sensor 62 are electrically connected to the controller. The pressure detected by the pressure sensor 62 can be displayed through the display, which is convenient for the driver to observe.

[0054] Figure 5 The lock tongue in the figure is in a schematic state after being locked with the lock head 71.

[0055] A second through hole 601 is provided on the rotating rod 60, and a cylinder 64 is installed in the mounting seat 4. The extended end of the cylinder 64 is coaxially connected to the locking rod 63. When the lock tongue 5 is extended into the lock head 71 and rotated to lock, the second through hole 601 is aligned with the locking rod 63, and the cylinder 64 pushes the locking rod 63 into the second through hole 601. At this time, the driver can be prevented from accidentally touching the rotating rod 60 to cause it to rotate, thereby unlocking the lock tongue 5 and the lock head 71, avoiding the occurrence of malfunctions.

[0056] Specifically, a first through hole 600 is provided on the rotating rod 60 below the second through hole 601. The first through hole 600 and the second through hole 601 are arranged perpendicularly. When the lock tongue 5 rotates and locks with the lock head 71, the infrared sensor transmitting end and the infrared sensor receiving end are respectively installed at the two ends of the first through hole 600 on both sides of the inner wall of the mounting base 4; when the lock tongue 5 rotates and locks with the lock head 71, the first through hole 600 allows the infrared sensor transmitting end to pass through and receive the signal from the infrared sensor receiving end. At this time, the cylinder 64 pushes the locking rod 63 into the second through hole 601.

[0057] The infrared sensor transmitting end and the infrared sensor receiving end are collectively referred to as the infrared sensor; the infrared sensor and the cylinder 64 are both electrically connected to the controller. When the infrared sensor receiving end receives the signal from the infrared sensor transmitting end, the infrared sensor transmits the signal to the controller, and the controller controls the cylinder to work and push the locking rod 63 into the second through hole 601.

[0058] It is worth noting that a side panel of the shell 30 is removable. After removing the panel, the mechanical components inside the shell 30 can be inspected and maintained; when the first brake assembly and the second brake assembly are triggered to brake, the panel can be removed and the first gear 33 can be rotated to move the moving block 343 to the position marked with a scale on the screw rod 341. This ensures that the next time a fault occurs, the first brake assembly and the second brake assembly maintain normal braking; in order to facilitate the rotation of the first gear 33, a handle can be installed on the side wall of the first gear 33.

[0059] Of course, a speed sensor can be installed on the rotating shaft 12, and an alarm can also be installed in the cab. The speed sensor and the alarm are electrically connected to the controller. When the speed sensor detects that the speed of the rotating shaft is greater than the set value, the controller controls the alarm to sound an alarm, which can remind the driver and facilitate timely notification of relevant personnel to take emergency measures.

[0060] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent safety monitoring system for a bridge crane, comprising a bridge crane frame (10), a rotating shaft (12) rotatably mounted on the bridge crane frame (10), a winding roller (13) mounted on the rotating shaft (12), and a first motor (15) for driving the rotating shaft (12) to rotate, characterized in that: One end of the rotating shaft (12) is fixedly connected to a rotating plate (31), and further comprises a first brake assembly for braking the rotating plate (31) and a second brake assembly for braking the rotating shaft (12), wherein the first brake assembly drives the second brake assembly to operate simultaneously with the operation of the first brake assembly; The first brake assembly includes a rotating wheel (32), a first gear (33), a screw rod (341), a guide rod (342), a moving block (343), and a first brake block (35), one end of the screw rod (341) is fixedly connected to a second gear (340) meshing with the first gear (33), the moving block (343) is threadedly connected to the screw rod (341), and the moving block (343) is slidably connected to the guide rod (342), and the moving block is fixedly connected to the first brake block; the rotating wheel (32) is fixedly connected to the rotating shaft (12), the first gear (33) is rotatably connected to the rotating wheel (32), and the rotating wheel (32) is movably connected to a clutch block (322), and when the rotating shaft (12) rotates at a speed greater than a set value, the clutch block (322) is subjected to centrifugal force to contact the first gear (33) and drive the first gear (33) to rotate; The second brake assembly includes a fixed plate (360), a push rod (361), a plate (362), a compression spring (363), a roller (364), and a second brake block (37). A groove (351) is provided on a side of the first brake block (35) close to the rotating shaft (12). The inner wall of the groove (351) on a side away from the rotating plate (31) is an arc-shaped concave surface (352). The middle part of the push rod (361) is slidably connected to the fixed plate (360). The plate (362) and the second brake block (37) are respectively fixedly connected to the two ends of the push rod (361). The compression spring (363) is sleeved on the push rod. The two ends of the compression spring are respectively connected to the fixed plate (360) and the plate (362). The roller (364) is installed on the plate (362), and the roller (364) is located in the groove (351).

2. The intelligent safety monitoring system for a bridge crane according to claim 1 is characterized in that: The outer ring wall of the rotating wheel (32) is provided with a plurality of sliding grooves (320), the clutch block (322) is slidably arranged in the sliding grooves (320), and further includes a spring (321) arranged in the sliding grooves (320), and the two ends of the spring (321) are fixedly connected to the clutch block (322) and the inner wall of the sliding groove (320), respectively.

3. The intelligent safety monitoring system for a bridge crane according to claim 1 is characterized in that: The invention also includes two mutually parallel side plates (11) fixedly connected to the bridge hanger (10), a rotating shaft (12) rotatably connected between the two side plates (11), a first motor (15) mounted on one of the side plates (11), and an output shaft of the first motor (15) coaxially connected to the other end of the rotating shaft (12).

4. The intelligent safety monitoring system for a bridge crane according to claim 3 is characterized in that: A housing (30) is mounted on the other side plate (11), one end of the rotating shaft (12) extends into the housing (30), and the first brake assembly and the second brake assembly are both located in the housing (30).

5. The intelligent safety monitoring system for a bridge crane according to claim 4 is characterized in that: The screw rod (341) is rotatably connected in the housing (30), the guide rod (342) is fixedly connected in the housing (30), and the screw rod (341), the guide rod (342) and the rotating shaft (12) are parallel to each other.

6. The intelligent safety monitoring system for a bridge crane according to claim 5, characterized in that: The fixing plate (360) is fixedly connected to the inner wall of the housing (30), and an arc-shaped groove is provided on a side of the second brake block (37) close to the rotating shaft (12).

7. The intelligent safety monitoring system for a bridge crane according to claim 1, characterized in that: The utility model also includes a lifting rope (14) and a lifting device, wherein the lifting device includes a main beam (20) and a support arm (21) that can be moved and adjusted along the length direction of the main beam (20), one end of the lifting rope (14) is connected to the winding roller (13), and the other end of the lifting rope (14) is connected to the main beam (20), and the end of the support arm (21) away from the main beam (20) is fixedly connected to the mounting seat (4), and a locking tongue (5) is provided below the mounting seat (4).

8. The intelligent safety monitoring system for a bridge crane according to claim 7, characterized in that: A rotating rod (60) is rotatably connected in the mounting seat (4), and the bottom end of the rotating rod (60) extends to the bottom of the mounting seat (4) and is fixedly connected to the lock tongue (5). The container (70) is also included. Lock heads (71) adapted to the lock tongue (5) are installed at the four corners of the top of the container (70). A pressure sensor (62) is installed on the top of the lock tongue (5). The container also includes a second motor (61) for driving the rotating rod (60) to rotate.

9. The intelligent safety monitoring system for a bridge crane according to claim 8, characterized in that: The rotating rod (60) is provided with a second through hole (601), and a cylinder (64) is installed in the mounting seat (4). The extended end of the cylinder (64) is coaxially connected to the locking rod (63). When the lock tongue (5) is inserted into the lock head (71) and rotated to lock, the second through hole (601) is aligned with the locking rod (63), and the cylinder (64) pushes the locking rod (63) into the second through hole (601).

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