A crane for ship parts preventing overloading

Abstract

The present invention belongs to the field of lifting technology, and discloses a ship parts crane that prevents overloading, including a supporting component; a fixing component; a driving component; a lifting component; a rotating wheel component and a lifting component. The present invention is equipped with a newly designed lifting component. When the cargo is too heavy, the hook and the diamond block will move downward, squeeze the two inner trapezoidal blocks, and tilt outward around the round shell. The two U-shaped springs on the top are deformed by force, and the friction plate will be close to the second turntable and play a clamping role. When the friction force is too large, the second motor is limited and the steel cable cannot be wound to move the hook upward, and the heavy object cannot move upward. At this time, the Y-shaped friction plate will also contact the inner wall of the round shell to provide another supporting force, solving the problem that the lossy crane will cause further structural damage to the entire crane when lifting parts close to or even overweight.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting, and in particular relates to a ship parts crane capable of preventing overloading. Background Art

[0002] A crane is used in the shipbuilding process to transport parts needed for manufacturing. It is mainly used for vertical lifting or vertical lifting and horizontal movement of heavy objects. It mainly includes a driving mechanism, a lifting mechanism, and an operating mechanism. These mechanisms work together to complete the task of material handling. The driving device is the power source of the crane, and the most common is electric drive. The lifting mechanism is a device that connects the material to the crane for material lifting by lifting, grabbing, sucking, clamping, supporting or other means;

[0003] Although the maximum lifting tonnage of the crane is pre-specified before use, in actual use, most ship parts are of special-shaped structures and their weight is difficult to estimate. In addition, shipyards are mostly located in lakes and oceans, which are significantly corroded by water vapor. The metal parts of the crane are also more prone to rust, affecting their strength. If a damaged crane lifts parts that are close to or even overweight, it may cause further structural damage to the crane as a whole and cause production accidents. Therefore, a crane that can prevent lifting overload is needed. Summary of the invention

[0004] The object of the present invention is to provide a ship parts crane which can prevent overloading, so as to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a ship parts crane for preventing overloading, comprising a support assembly, a fixing assembly being movably installed on the top of the support assembly, and further comprising:

[0006] A linkage anti-overload mechanism comprises a driving assembly, the driving assembly is fixedly mounted on the left side of the fixing assembly, a lifting assembly is fixedly mounted on the back of the driving assembly, and a rotating wheel assembly is fixedly mounted on the bottom of the lifting assembly;

[0007] A hoisting component, which is movably installed at the bottom of the fixed component. The hoisting component includes two groups of trapezoidal blocks, the tops of the two groups of trapezoidal blocks are elastically connected with U-shaped springs, the insides of the two groups of trapezoidal blocks are rotatably installed with second turntables, the outer sides of the two second turntables are fixedly connected with friction plates, a circular shell is installed through the middle positions of the two groups of trapezoidal blocks and the two second turntables, a Y-shaped friction plate is movably hinged at the middle position of the circular shell, a bearing is fixedly installed at the bottom of the Y-shaped friction plate, and a hook is fixedly installed at the bottom of the bearing.

[0008] Preferably, the four friction plates are all fixedly mounted on the inner wall of the trapezoidal block, the trapezoidal block does not contact the second turntable under normal conditions, the Y-shaped friction plate does not contact the inner wall of the round shell under normal conditions, the inner ring of the bearing is fixedly connected to the outer edge of the Y-shaped friction plate, the outer ring of the bearing is fixedly connected to the hook, and a prismatic block is fixedly mounted on the top of the hook to be movably engaged with the two inner trapezoidal blocks.

[0009] Preferably, the support assembly includes two fixing bars, the tops of the two fixing bars are fixedly connected with screw rods, the outer edges of the two screw rods are movably sleeved with longitudinal rods, and the inner sides of the tops of the two longitudinal rods are fixedly connected with a rack.

[0010] Preferably, the fixing assembly comprises a frame, a weight block is fixedly connected to the front side of the frame, two groups of rollers are rotatably mounted on the inner side of the bottom of the frame, and the tops of the two groups of rollers are in contact with the rack.

[0011] Preferably, the driving assembly includes a first motor, which is fixedly installed on the left side of the frame, and the output shaft of the first motor is fixedly connected to a clamping disk, and a plurality of steel balls are movably clamped on the top of the clamping disk, and a meshing disk is movably clamped on the top of the plurality of steel balls, and a film spring is abutted on the top of the meshing disk, and a fixing ring is fixedly connected to the top of the fixing ring, and a small gear is fixedly connected to the top of the fixing ring, and a large gear is meshed on the right side of the small gear, and the rotating shaft of the large gear is fixedly connected to a rotating wheel.

[0012] Preferably, a circular shaft is provided in the middle of the small gear, passing through the middle of the film spring and fixedly connected to the meshing disk. The large gear and the rotating wheel are both rotatably mounted on the top inner wall of the frame. Two rotating wheels are rotatably mounted on the top of the frame, and both rotating wheels are meshed with the rack.

[0013] Preferably, the lifting assembly includes two support frames, the two support frames are fixedly mounted on the back of the frame, a winch is rotatably mounted at the middle position of the two support frames, a second motor is fixedly mounted on the right side of the winch, a steel cable is wound around the outer edge of the winch, two spring limit blocks are fixedly connected at the oblique lower portion of the winch, a round rod is fixedly connected to the middle portion of the two spring limit blocks, a movable ring is movably sleeved on the outer edge of the round rod, and the outer edge of the movable ring abuts against the wound steel cable.

[0014] Preferably, the wheel assembly includes two groups of inclined plates, both groups of inclined plates are fixedly installed in the middle position of the frame, a first turntable is rotatably installed in the middle position of the two inclined plates on the right side, and a movable column is movably hinged in the middle position of the two inclined plates on the left side, and a buckle is fixedly installed at the bottom of the movable column.

[0015] Preferably, the steel cable is firstly wound around the second rotating disk on the front side, then wound around the outer edge of the first rotating disk upwards, and then wound around the movable column upwards through the outer edge of the second rotating disk on the back side and then fixedly connected with the buckle.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention is equipped with a newly designed lifting assembly. When the cargo is too heavy, the hook and the diamond block will move downward, squeeze the two inner trapezoidal blocks, and tilt outward around the round shell. The two U-shaped springs on the top are deformed by force, and the friction plate will be close to the second turntable and play a clamping role. When the friction force is too large, the second motor is limited and the steel cable cannot be wound around to move the hook upward, and the heavy object cannot move upward. At this time, the Y-shaped friction plate will also contact the inner wall of the round shell to provide another supporting force, thereby solving the problem that a lossy crane may cause further structural damage to the entire crane when lifting parts that are close to or even overweight.

[0018] 2. The present invention is equipped with a disconnectable driving component. The rotation of the first motor can drive the small gear and the large gear to rotate, and transmit the rotational force to the rotating wheel. If the cargo is not overweight during hoisting, but the torque on the fixed component and the driving component is too large during movement, the friction between the rack and the rotating wheel is too large, which will be transmitted to the small gear through the meshing large gear. At this time, when the rotation output of the first motor is transmitted to the card plate, the small gear is subjected to excessive torque, and the meshing disk will squeeze the film spring to cause it to deform, thereby causing the meshing disk to rotate and displace and cancel the meshing with the steel ball, thereby realizing the power cutoff between the first motor and the small gear, thereby protecting the first motor and other components from damage.

[0019] 3. The present invention is equipped with a lifting assembly. The second motor rotates clockwise, and the steel cable gradually moves downward along the first turntable and the two second turntables under the gravity of the lifting assembly. After the goods are connected to the hook, the second motor is started counterclockwise, and the winch starts to wind the steel cable again. The steel cable passes through the first turntable and the two second turntables again, and has an upward pulling effect on the lifting assembly. When the steel cable is wound and spread on the winch, the moving ring moves on the round rod to ensure that the steel cable is always in order on the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a top view of the overall structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 4 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0025] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0026] Figure 7 For the present invention Figure 5 A magnified schematic diagram of the structure at C in the middle;

[0027] Figure 8 For the present invention Figure 5 A magnified schematic diagram of the structure at D in the middle;

[0028] Fig. 9 This is a schematic diagram of the structure of the card receiving plate of the present invention;

[0029] Fig.10 This is a schematic diagram of the film spring structure of the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the lifting assembly of the present invention.

[0031] In the figure: 1. Support assembly; 2. Fixing assembly; 3. Driving assembly; 4. Lifting assembly; 5. Wheel assembly; 6. Lifting assembly; 11. Fixing bar; 12. Screw rod; 13. Longitudinal rod; 14. Rack; 21. Frame; 22. Load block; 23. Roller; 31. First motor; 32. Snap plate; 33. Steel ball; 34. Engaging plate; 35. Film spring; 36. Fixing ring; 37. Pinion; 38. Large gear; 39, rotating wheel; 41, supporting frame; 42, capstan; 43, second motor; 44, steel cable; 45, spring limit block; 46, round rod; 47, moving ring; 51, inclined plate; 52, movable column; 53, buckle; 54, first turntable; 61, trapezoidal block; 62, U-shaped spring; 63, second turntable; 64, friction plate; 65, round shell; 66, Y-shaped friction plate; 67, bearing; 68, hook. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 11As shown, an embodiment of the present invention provides a ship parts crane for preventing overloading, comprising a support assembly 1, a fixing assembly 2 is movably installed on the top of the support assembly 1, and further comprising:

[0034] The linkage anti-overload mechanism comprises a driving assembly 3, which is fixedly mounted on the left side of the fixing assembly 2, a lifting assembly 4 is fixedly mounted on the back of the driving assembly 3, and a rotating wheel assembly 5 is fixedly mounted on the bottom of the lifting assembly 4;

[0035] The hoisting assembly 6 is movably installed at the bottom of the fixed assembly 2. The hoisting assembly 6 includes two sets of trapezoidal blocks 61. The tops of the two sets of trapezoidal blocks 61 are elastically connected with U-shaped springs 62. The insides of the two sets of trapezoidal blocks 61 are rotatably installed with second turntables 63. The outer sides of the two second turntables 63 are fixedly connected with friction plates 64. The middle positions of the two sets of trapezoidal blocks 61 and the two second turntables 63 are penetrated and installed with a round shell 65. The middle position of the round shell 65 is movably hinged with a Y-shaped friction plate 66. The Y-shaped friction plate A bearing 67 is fixedly installed at the bottom of 66, and a hook 68 is fixedly installed at the bottom of the bearing 67; the four friction plates 64 are fixedly installed on the inner wall of the trapezoidal block 61, the trapezoidal block 61 does not contact the second rotating disk 63 under normal conditions, the Y-shaped friction plate 66 does not contact the inner wall of the round shell 65 under normal conditions, the inner ring of the bearing 67 is fixedly connected to the outer edge of the Y-shaped friction plate 66, the outer ring of the bearing 67 is fixedly connected to the hook 68, and a prismatic block is fixedly installed on the top of the hook 68 to movably engage with the two inner trapezoidal blocks 61;

[0036] When the cargo is too heavy, the hook 68 and the diamond block will move downward, squeezing the two trapezoidal blocks 61 on the inside and tilting outward around the round shell 65. The two U-shaped springs 62 on the top will be deformed by force, and the friction plate 64 will be close to the second turntable 63 and play a clamping role. When the friction force is too large, the second motor 43 is limited and cannot wrap the steel cable 44 to make the hook 68 move upward, and the heavy object cannot move upward. At this time, the Y-shaped friction plate 66 will also contact the inner wall of the round shell 65 to provide another supporting force, solving the problem that if a crane with wear and tear lifts parts close to or even overweight, it may cause further structural damage to the entire crane.

[0037] The support assembly 1 includes two fixing bars 11, the tops of the two fixing bars 11 are fixedly connected with screw rods 12, the outer edges of the two screw rods 12 are movably sleeved with longitudinal rods 13, the inner sides of the tops of the two longitudinal rods 13 are fixedly connected with a rack 14, and large through-type stepping motors are installed in the two longitudinal rods 13. When the stepping motors are started, the two longitudinal rods 13 can be driven to move forward and backward on the screw rods 12;

[0038] The whole equipment is moved forward and backward to the position where it needs to be hoisted through the support assembly 1, and the two longitudinal rods 13 move forward and backward on the screw rod 12, driving the rack 14 and the components installed on the rack 14 to move;

[0039] The fixing assembly 2 includes a frame 21, a load block 22 is fixedly connected to the front side of the frame 21, two groups of rollers 23 are rotatably mounted on the inner side of the bottom of the frame 21, and the tops of the two groups of rollers 23 are in contact with the rack 14;

[0040] The rotating wheel 39 can form a rectangular clamping driving structure with the two rotating rollers 23 at the bottom of the frame 21. Driving the first motor 31 clockwise or counterclockwise can make the frame 21 move left and right on the rack 14;

[0041] The driving assembly 3 includes a first motor 31, which is fixedly mounted on the left side of the frame 21. The output shaft of the first motor 31 is fixedly connected to a clamping disk 32. A plurality of steel balls 33 are movably clamped on the top of the clamping disk 32. A meshing disk 34 is movably clamped on the top of the plurality of steel balls 33. A film spring 35 abuts on the top of the meshing disk 34. A fixing ring 36 is fixedly connected to the top of the film spring 35. A pinion 37 is fixedly connected to the top of the fixing ring 36. A large gear 38 is meshed on the right side of the pinion 37. A rotating shaft of the large gear 38 is fixedly connected to a rotating wheel 39. A circular shaft is provided in the middle of the pinion 37, which passes through the middle of the film spring 35 and is fixedly connected to the meshing disk 34. The large gear 38 and the rotating wheel 39 are both rotatably mounted on the top inner wall of the frame 21. Two rotating wheels 39 are rotatably mounted on the top of the frame 21. Both rotating wheels 39 are meshed with the rack 14.

[0042] The rotation of the first motor 31 can drive the small gear 37 and the large gear 38 to rotate, and transmit the rotational force to the rotating wheel 39. If the cargo is not overweight during hoisting, but the torque applied to the fixing component 2 and the driving component 3 during movement is too large, the friction between the rack 14 and the rotating wheel 39 is too large, which will be transmitted to the small gear 37 through the meshing large gear 38. At this time, when the rotation output of the first motor 31 is transmitted to the clamping disk 32, the torque value applied to the small gear 37 is too large, and the meshing disk 34 will squeeze the film spring 35 to deform it, so that the meshing disk 34 rotates and displaces and cancels the meshing with the steel ball 33, thereby realizing the power cutoff between the first motor 31 and the small gear 37, thereby protecting the first motor 31 and other components from damage;

[0043] The lifting assembly 4 includes two support frames 41, which are fixedly mounted on the back of the frame 21. A winch 42 is rotatably mounted in the middle of the two support frames 41. A second motor 43 is fixedly mounted on the right side of the winch 42. A steel cable 44 is wound around the outer edge of the winch 42. Two spring limit blocks 45 are fixedly connected to the oblique lower part of the winch 42. A round rod 46 is fixedly connected to the middle of the two spring limit blocks 45. A moving ring 47 is movably sleeved on the outer edge of the round rod 46. The outer edge of the moving ring 47 abuts against the wound steel cable 44.

[0044] The second motor 43 rotates clockwise, and the steel cable 44 gradually moves downward along the first turntable 54 and the two second turntables 63 under the action of gravity of the hoisting assembly 6. After the cargo is connected to the hook 68, the second motor 43 is started counterclockwise, and the winch 42 starts winding the steel cable 44 again. The steel cable 44 passes through the first turntable 54 and the two second turntables 63 again, and plays an upward pulling role on the hoisting assembly 6. When the steel cable 44 is wound and unwound on the winch 42, the moving ring 47 moves on the round rod 46 to ensure that the steel cable 44 is always in order on the winch 42, and the spring limit blocks 45 on both sides play a limiting role;

[0045] The rotating wheel assembly 5 includes two groups of inclined plates 51, both of which are fixedly installed at the middle position of the frame 21. The middle position of the two inclined plates 51 on the right side is rotatably installed with a first rotating disk 54, and the middle position of the two inclined plates 51 on the left side is movably hinged with a movable column 52, and the bottom of the movable column 52 is fixedly installed with a buckle 53; the steel cable 44 is firstly wound around the second rotating disk 63 on the front side, and then wound upwardly around the outer edge of the first rotating disk 54, and then wound upwardly around the movable column 52 through the outer edge of the second rotating disk 63 on the back side, and then fixedly connected with the buckle 53;

[0046] The steel cable 44 moves upward or downward along the first turntable 54 and the two second turntables 63 under the gravity of the hoisting assembly 6. The first turntable 54 and the two second turntables 63 actually form a fixed pulley block, which saves effort during hoisting.

[0047] Working principle:

[0048] When using the present invention, first, the whole device can be moved forward and backward to the position where it needs to be hoisted through the support component 1, and the two longitudinal rods 13 move forward and backward on the screw rod 12, driving the rack 14 and the parts installed on the rack 14 to move. At this time, the drive component 3 is started again, and the rotation of the first motor 31 can drive the small gear 37 and the large gear 38 to rotate. After the rotation force is transmitted to the rotating wheel 39, a rectangular clamping drive structure can be formed with the two rollers 23 at the bottom of the frame 21. The first motor 31 is driven clockwise or counterclockwise to make the frame 21 move left and right on the rack 14, and the device is further moved above the parts.

[0049] When the preparation work is completed, the second motor 43 is driven to rotate clockwise, and the steel cable 44 will gradually move downward along the first turntable 54 and the two second turntables 63 under the gravity of the hoisting assembly 6. After the goods are connected to the hook 68, the second motor 43 is started counterclockwise, and the winch 42 starts the winding action of the steel cable 44 again. The steel cable 44 will pass through the first turntable 54 and the two second turntables 63 again, and play an upward pulling role on the hoisting assembly 6. When the steel cable 44 is wound and spread on the winch 42, the moving ring 47 will move on the round rod 46 to ensure that the steel cable 44 can always be orderly on the winch 42, and the spring limit blocks 45 on both sides will play a limiting role;

[0050] If the cargo is too heavy, the hook 68 and the diamond block will move downward, squeezing the two trapezoidal blocks 61 on the inside and tilting outward around the round shell 65. The two U-shaped springs 62 on the top will be deformed by force, and the friction plate 64 will be close to the second turntable 63 and play a clamping role. When the friction force is too large, the second motor 43 is limited and cannot wind the steel cable 44 to make the hook 68 move upward, and the heavy object cannot move upward. At this time, the Y-shaped friction plate 66 will also contact the inner wall of the round shell 65 to provide another supporting force.

[0051] If the cargo is not overweight during hoisting, but the torque on the fixed component 2 and the driving component 3 is too large during movement, the friction between the rack 14 and the rotating wheel 39 will be too large, which will be transmitted to the pinion 37 through the meshing large gear 38. At this time, when the rotation output of the first motor 31 is transmitted to the clamping disk 32, the torque value on the pinion 37 is too large, and the meshing disk 34 will squeeze the film spring 35 to deform it, so that the meshing disk 34 rotates and displaces and cancels the meshing with the steel ball 33, thereby realizing the power cut-off between the first motor 31 and the pinion 37, thereby protecting the first motor 31 and other components from damage, and the workflow ends here.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship parts crane for preventing overload, comprising a support assembly, characterized in that: A fixed component is movably installed on the top of the supporting component, and also includes a linkage anti-overload mechanism, which includes a driving component, the driving component is fixedly installed on the left side of the fixed component, the back of the driving component is fixedly installed with a lifting component, and the bottom of the lifting component is fixedly installed with a rotating wheel component; a lifting component, the lifting component is movably installed on the bottom of the fixed component, and the lifting component includes two groups of trapezoidal blocks, the tops of the two groups of trapezoidal blocks are elastically connected with U-shaped springs, the insides of the two groups of trapezoidal blocks are rotatably installed with second turntables, the inner walls of the two groups of trapezoidal blocks are fixedly connected with friction plates, and a round shell is installed through the middle positions of the two groups of trapezoidal blocks and the two second turntables, and a Y-shaped Friction plate, a bearing is fixedly installed at the bottom of the Y-shaped friction plate, and a hook is fixedly installed at the bottom of the bearing; four friction plates are fixedly installed on the inner wall of the trapezoidal block, the trapezoidal block does not contact the second turntable under normal conditions, and the Y-shaped friction plate does not contact the inner wall of the round shell under normal conditions. The inner ring of the bearing is fixedly connected to the outer edge of the Y-shaped friction plate, and the outer ring of the bearing is fixedly connected to the hook. A diamond block is fixedly installed on the top of the hook and is movably connected with the two inner trapezoidal blocks. If the cargo is too heavy, the hook and the diamond block will move downward, squeeze the two inner trapezoidal blocks, and tilt to the outside around the round shell. The two U-shaped springs on the top are deformed under force, and the friction plate will be close to the second turntable and play a clamping role.

2. The overload-preventing ship parts crane according to claim 1, characterized in that: The support assembly comprises two fixing bars, the tops of the two fixing bars are fixedly connected with screw rods, the outer edges of the two screw rods are movably sleeved with longitudinal rods, and the inner sides of the tops of the two longitudinal rods are fixedly connected with a rack.

3. The ship parts crane for preventing overload according to claim 2, characterized in that: The fixed component comprises a frame, a load block is fixedly connected to the front side of the frame, two groups of rollers are rotatably installed on the inner side of the bottom of the frame, and the tops of the two groups of rollers are in contact with the racks.

4. The overload-preventing ship parts crane according to claim 3, characterized in that: The lifting assembly includes two support frames, which are fixedly installed on the back of the frame. A winch is rotatably installed in the middle of the two support frames. A second motor is fixedly installed on the right side of the winch. A steel cable is wound around the outer edge of the winch. Two spring limit blocks are fixedly connected to the oblique lower part of the winch. A round rod is fixedly connected to the middle of the two spring limit blocks. A movable ring is movably sleeved on the outer edge of the round rod, and the outer edge of the movable ring abuts against the wound steel cable.

5. The overload-preventing ship parts crane according to claim 3, characterized in that: The rotating wheel assembly includes two sets of inclined plates, both of which are fixedly installed in the middle of the frame. The first turntable is rotatably installed in the middle of the two inclined plates on the right, and a movable column is movably hinged in the middle of the two inclined plates on the left, and a buckle is fixedly installed at the bottom of the movable column.

6. The overload-preventing ship parts crane according to claim 4, characterized in that: The steel cable is firstly wound around the second rotating disk at the front side, then wound around the outer edge of the first rotating disk upwards, and then wound around the movable column upwards through the outer edge of the second rotating disk at the back side, and then fixedly connected with the buckle.

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