CN116281574B - Anti-drop device for crane lifting hook - Google Patents
Anti-drop device for crane lifting hook Download PDFInfo
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- CN116281574B CN116281574B CN202310218399.XA CN202310218399A CN116281574B CN 116281574 B CN116281574 B CN 116281574B CN 202310218399 A CN202310218399 A CN 202310218399A CN 116281574 B CN116281574 B CN 116281574B
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- rod
- lifting hook
- clamping groove
- annular clamping
- groove
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- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 51
- 230000002265 prevention Effects 0.000 claims 4
- 230000006378 damage Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention relates to the technical field of lifting hooks, in particular to an anti-falling device of a crane lifting hook; comprises a lifting hook body; the lifting hook body consists of a lifting hook ring and a connecting ring; the hanging hook ring and the connecting ring are integrally designed; the outer surface of the hanging hook ring is fixedly provided with a supporting seat; a rotating rod is rotatably connected to the inside of the supporting seat; both ends of the rotating rod are fixedly provided with V-shaped rods; the two V-shaped rods and the rotating rod are integrally designed; a handheld part is fixedly arranged between the two V-shaped rods; the handheld portion drives the V-shaped rod and the curved embedded rod to move to one side close to the annular clamping groove, then the curved embedded rod is clamped in along the annular clamping groove, the curved embedded rod can adaptively change according to the shape of the annular clamping groove, and then the length of a hanging hook ring is changed, so that the supporting frame of an article can be limited, the phenomenon that the article falls off due to shaking of a lifting hook in the hanging process is avoided, and the safety of the article in hanging is improved.
Description
Technical Field
The invention relates to the technical field of lifting hooks, in particular to an anti-falling device of a crane lifting hook.
Background
The crane is a multi-action hoisting machine for vertically hoisting and horizontally carrying heavy objects in a certain range; in the use process of the crane, the heavy object is usually hoisted on the lifting hook assembly through a rope, and the lifting and horizontal carrying of the heavy object are realized through a power system.
The lifting hook group of the crane is provided with a single hook and a double hook; the single hook is simple to manufacture and convenient to use, but has poor stress condition, and is mostly used in working occasions with lifting capacity of below 80 tons; the lifting capacity is high, double hooks with symmetrical stress are often adopted, the laminated lifting hook is formed by riveting a plurality of cut steel plates, the whole lifting hook is not damaged when individual plates are cracked, the safety is good, but the self weight is high, and the laminated lifting hook is mostly used on a crane for lifting, weighing or lifting a molten steel ladle; the lifting hook is impacted frequently in the operation process and is manufactured by high-quality carbon steel with good toughness.
At present, when an object is lifted by a crane, the lifting hook is only a simpler hook shape, so that the supporting frame of the object is hooked for lifting, but if the lifting hook shakes in the lifting process and the shaking amplitude is large, the lifted object is easy to unhook, and even the object can fall off; and may cause injury to equipment and personnel.
Therefore, the invention provides an anti-drop device of the crane hook.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problems that in the prior art, the lifting hook shakes in the lifting process, and when the shaking amplitude is large, the lifted object is easy to unhook and drop; and may cause injury to equipment and personnel.
In order to solve the technical problems, the invention provides a lifting hook anti-drop device for a traveling crane, which comprises a lifting hook body; the lifting hook body consists of a lifting hook ring and a connecting ring; the hanging hook ring and the connecting ring are integrally designed; the outer surface of the hanging hook ring is fixedly provided with a supporting seat; a rotating rod is rotatably connected to the inside of the supporting seat; both ends of the rotating rod are fixedly provided with V-shaped rods; the two V-shaped rods and the rotating rod are integrally designed; a handheld part is fixedly arranged between the two V-shaped rods; a limiting frame is fixedly arranged on one side, away from the handheld part, between the two V-shaped rods; the surface of the limiting frame is fixedly provided with a curved embedded rod, and the curved embedded rod is a bendable elastic rigid plate; an annular clamping groove is formed in the hooked top end of the lifting hook ring; the shape of the annular clamping groove is matched with the shape of the curved embedded rod;
during operation, when the lifting hook body is not used for lifting an article, the curved embedded rod is not clamped in the annular clamping groove, when the article is lifted, a worker breaks the handheld part, the handheld part drives the two V-shaped rods and the curved embedded rod to rotate away from the annular clamping groove, then the handheld part is reversed, the handheld part drives the V-shaped rods and the curved embedded rod to move towards one side close to the annular clamping groove, then the curved embedded rod is clamped in along the annular clamping groove, the curved embedded rod can adaptively change according to the shape of the annular clamping groove, the length of the lifting hook is changed, the supporting frame of the article can be limited, the phenomenon that the article falls off due to shaking of the lifting hook in the lifting process is avoided, and the safety of the article during lifting is improved.
In one embodiment of the invention, the annular clamping groove is formed along the hook-shaped part of the lifting hook ring, and the upper end surface of the annular clamping groove is provided with an arc chamfer; the length of the annular clamping groove is matched with the length of the curved embedded rod; during operation, the arc chamfer has been seted up at the up end of annular draw-in groove, can make things convenient for bent embedded lever to go into along annular draw-in groove card, and its shape is offered along the hook-shaped hook department of lifting hook form moreover, and bent embedded lever is according to the shape self-adaptation change of annular draw-in groove to the top is at the inner wall of annular draw-in groove, provides higher security when hoist and mount for article.
In one embodiment of the invention, the surface of the hand-held part is sleeved with a rubber pad, and the rubber pad is provided with anti-skid patterns; the bottom end of the curved embedded rod is arc-shaped; during operation, the rubber pad has been cup jointed on the handheld portion surface, and the rubber pad surface sets up anti-skidding line, can conveniently rotate V type pole, and the shape of bent embedded lever bottom is convex, can conveniently laminate and slide in of bent embedded lever and annular draw-in groove.
In one embodiment of the invention, the surface of the hanging hook ring is fixedly provided with a column cavity; a telescopic column is fixedly arranged in the column-shaped cavity; the outer surface of the telescopic column is sleeved with a telescopic spring; the lower surface of the lifting hook ring is rotatably connected with a bearing plate; the lower surface of the lifting hook ring is provided with a rotating shaft matched with the bearing plate; the upper end of the bearing plate is fixedly connected with an elastic pull rope; the upper end of the elastic pull rope is fixedly connected with the bottom end of the telescopic column; the surface of the bearing plate is provided with an arc-shaped groove; during operation, when hanging the shackle surface in the strut of article to when carrying out hoist and mount, the strut of article can with accept the board contact, accept the board and receive the pressure, can pull the elasticity stay cord of its upper end, elasticity stay cord pulling flexible post and expansion spring remove, afterwards crooked accepting the board and flexible post can carry out spacingly to the strut opposite side of article, guaranteed the stability of article when hoist and mount, eliminated the potential safety hazard of during operation.
In one embodiment of the invention, the lower end surface of the supporting seat is rotatably connected with a bending rod; a limiting groove is formed in the surface of the limiting frame; a jacking column is fixedly arranged on the outer surface of the bearing plate; the top end of the jacking column is rotationally connected with the lower surface of the bending rod; during operation, when accepting the board and rotating, accept the board and can drive the jack-prop on its surface simultaneously and remove, the jack-prop can drive the bent lever on its top and rotate, and the bent lever can rotate to spacing frame surface spacing groove one side, and afterwards the bent lever can block in the spacing groove, carries out spacingly to spacing frame and curved embedding pole, avoids article to receive the shaking force too big when hoist and mount, appears curved embedding pole and breaks away from the inside problem of annular draw-in groove, avoids appearing the incident.
In one embodiment of the invention, the shape of the bending rod is matched with the shape of the limit groove; the surface of the bending rod is fixedly connected with a limit spring; one side of the limiting spring, which is far away from the bending rod, is fixedly connected with the surface of the supporting seat; during operation, the limit spring is arranged on one side of the bending rod, so that the bending rod can be conveniently clamped in the limit groove.
In one embodiment of the invention, a plurality of first limiting teeth are fixedly connected at the bottom end of the bending rod; the inner wall of the limit groove is fixedly connected with a plurality of second limit teeth; the shapes of the first limiting teeth and the second limiting teeth are inclined conical; the first limiting teeth and the second limiting teeth are arranged, when the bending rod is clamped in the limiting groove, the first limiting teeth and the second limiting teeth at different positions can be clamped with each other, the strength of the bending rod in the limiting groove is improved, and the phenomenon that the bending rod is broken due to overlarge stress is avoided.
In one embodiment of the present invention, the plurality of first limiting teeth and the plurality of second limiting teeth are arranged in a one-to-one correspondence; the shape of the bottom of the bending rod is matched with the shape of the limit groove; the shape of the bottom of the bending rod is matched with the shape of the limit groove, so that the bending rod can be conveniently clamped in the limit groove.
In one embodiment of the invention, the inner wall of the arc-shaped groove is prevented from being provided with a rubber pad by the bearing plate; the lower surface of the lifting hook ring is provided with a rotating shaft matched with the bearing plate; during operation, the rubber pad is arranged, so that the article support frame can be conveniently placed, and the lifting of the article support frame is facilitated.
In one embodiment of the invention, the bottom of the curved embedded rod is rotatably connected with a roller; the length of the roller is smaller than that of the annular clamping groove; the bottom surface of the curved embedded rod is provided with a rotating shaft matched with the roller; the roller is arranged at the bottom of the curved embedded rod, and when the curved embedded rod is in contact with the annular clamping groove, the roller rolls in the annular clamping groove, so that the curved embedded rod is conveniently clamped in, and meanwhile, the curved embedded rod is conveniently taken out later.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the anti-drop device for the travelling crane lifting hook, the two V-shaped rods and the curved embedded rod are driven by the handheld part to rotate far away from the annular clamping groove, then the supporting frame of an article is arranged on the inner wall of the lifting hook, the handheld part is reversed, the handheld part drives the V-shaped rods and the curved embedded rod to move towards one side close to the annular clamping groove, then the curved embedded rod is clamped in along the annular clamping groove, the curved embedded rod can adaptively change according to the shape of the annular clamping groove, the length of the lifting hook is further changed, the supporting frame of the article can be limited, the phenomenon that the article is unhooked or even drops due to shaking of the lifting hook in the lifting process is avoided, the safety of the article in lifting is improved, and the problem of damage to equipment or personnel is avoided.
Through when accepting the board and rotate, accept the board and can drive the jack-prop on its surface simultaneously and remove, the jack-prop can drive the pole of buckling on its top and rotate, and the pole of buckling can rotate to spacing surface limit groove one side, and afterwards the pole of buckling can block in the limit groove, carries out spacingly to spacing and curved embedding pole, avoids article to receive the shaking force too big when hoist and mount, appears curved embedding pole and breaks away from the inside problem of annular draw-in groove, avoids appearing the incident.
Through when the bending rod card in the spacing groove, the first spacing tooth and the spacing tooth of second of different positions can mutual joint, have improved the intensity of bending rod in the spacing groove, have avoided the too big phenomenon that collapses that appears of bending rod atress.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
FIG. 1 is a schematic illustration of the present invention;
FIG. 2 is a schematic view of a portion of a hook ring according to the present invention;
FIG. 3 is a schematic view of a portion of a spacing frame according to the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 3A in accordance with the present invention;
FIG. 5 is a schematic view of a bending bar and a limiting groove part structure in the present invention;
FIG. 6 is a schematic view of a portion of a spacing spring according to the present invention;
fig. 7 is a schematic structural view of a roller according to a second embodiment of the present invention.
Description of the specification reference numerals: 1. a hook body; 101. a hanging shackle; 102. a connecting ring; 2. a support base; 3. a rotating lever; 4. a V-shaped rod; 41. a limiting frame; 42. a curved embedded rod; 5. a hand-held part; 6. an annular clamping groove; 7. a column cavity; 8. a telescopic column; 81. a telescopic spring; 9. a receiving plate; 10. an elastic pull rope; 11. bending the rod; 12. a limit groove; 13. a top column; 14. a limit spring; 15. the first limiting teeth; 16. the second limiting teeth; 17. and a roller.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Example 1
Referring to fig. 1 to 6, a lifting hook anti-drop device for a crane according to an embodiment of the present invention includes a hook body 1; the lifting hook body 1 is composed of a lifting hook ring 101 and a connecting ring 102; the lifting hook ring 101 and the connecting ring 102 are integrally designed; the outer surface of the lifting hook ring 101 is fixedly provided with a supporting seat 2; a rotating rod 3 is rotatably connected inside the supporting seat 2; both ends of the rotating rod 3 are fixedly provided with V-shaped rods 4; the two V-shaped rods 4 and the rotating rod 3 are integrally designed; a handheld part 5 is fixedly arranged between the two V-shaped rods 4; a limiting frame 41 is fixedly arranged on one side, far away from the handheld part 5, between the two V-shaped rods 4; the surface of the limiting frame 41 is fixedly provided with a curved embedded rod 42, and the curved embedded rod 42 is a bendable elastic rigid plate; an annular clamping groove 6 is formed in the hook-shaped top end of the hook ring 101; the shape of the annular clamping groove 6 is matched with the shape of the curved embedded rod 42;
at present, when an object is lifted by a crane, the lifting hook is only a simpler hook shape, so that the supporting frame of the object is hooked for lifting, but if the lifting hook shakes in the lifting process and the shaking amplitude is large, the lifted object is easy to unhook, and even the object can fall off; a problem that may cause injury to equipment and personnel;
when the lifting hook is specifically used, when the lifting hook body 1 is not used for lifting an article, the curved embedded rod 42 is not clamped in the annular clamping groove 6, when the article is lifted, a worker breaks the handheld part 5, so that the handheld part 5 drives the two V-shaped rods 4 and the curved embedded rod 42 to rotate away from the annular clamping groove 6, then the supporting frame of the article is arranged at the inner wall of the lifting hook ring 101, then the handheld part 5 is reversed, so that the handheld part 5 drives the V-shaped rods 4 and the curved embedded rod 42 to move towards one side close to the annular clamping groove 6, then the curved embedded rod 42 is clamped in along the annular clamping groove 6, the curved embedded rod 42 can be adaptively changed according to the shape of the annular clamping groove 6, the length of the lifting hook ring 101 is further changed, the supporting frame of the article can be limited, the phenomenon that the article is unhooked or even falls off due to shaking of the lifting hook in the lifting process is avoided, the safety of the article in the lifting process is improved, and the problem of damaging equipment or personnel is avoided.
The annular clamping groove 6 is formed along the hook-shaped part of the lifting hook ring 101, and the upper end surface of the annular clamping groove 6 is provided with an arc chamfer; the length of the annular clamping groove 6 is matched with the length of the curved embedded rod 42; during operation, the upper end face of the annular clamping groove 6 is provided with an arc chamfer, so that the curved embedded rod 42 can be conveniently clamped in along the annular clamping groove 6, the curved embedded rod 42 is provided along the hook-shaped part of the lifting hook, the curved embedded rod 42 is adaptively changed according to the shape of the annular clamping groove 6 and is propped against the inner wall of the annular clamping groove 6, and high safety is provided for articles during lifting.
The surface of the hand-held part 5 is sleeved with a rubber pad, and the rubber pad is provided with anti-skid patterns; the bottom end of the curved embedded rod 42 is arc-shaped; during operation, the rubber pad is sleeved on the surface of the handheld part 5, anti-skidding patterns are formed on the surface of the rubber pad, the V-shaped rod 4 can be conveniently rotated, the bottom end of the curved embedded rod 42 is arc-shaped, and the curved embedded rod 42 can be conveniently attached to and slid into the annular clamping groove 6.
The surface of the lifting hook ring 101 is fixedly provided with a column cavity 7; a telescopic column 8 is fixedly arranged in the column-shaped cavity 7; the outer surface of the telescopic column 8 is sleeved with a telescopic spring 81; the lower surface of the lifting hook ring 101 is rotatably connected with a bearing plate 9; the lower surface of the lifting hook ring 101 is provided with a rotating shaft matched with the bearing plate 9; the upper end of the bearing plate 9 is fixedly connected with an elastic pull rope 10; the upper end of the elastic pull rope 10 is fixedly connected with the bottom end of the telescopic column 8; the surface of the bearing plate 9 is provided with an arc-shaped groove; during operation, when the support of article is placed on the surface of the lifting hook ring 101, and during lifting, the support of article can be contacted with the bearing plate 9, the bearing plate 9 is pressed and can pull the elastic pull rope 10 at the upper end of the bearing plate, the elastic pull rope 10 pulls the telescopic column 8 and the telescopic spring 81 to move, and then the bent bearing plate 9 and the telescopic column 8 limit the other side of the support of article, so that the stability of the article during lifting is ensured, and the potential safety hazard during operation is eliminated.
The lower end surface of the supporting seat 2 is rotatably connected with a bending rod 11; a limiting groove 12 is formed in the surface of the limiting frame 41; the outer surface of the bearing plate 9 is fixedly provided with a jacking column 13; the top end of the top column 13 is rotationally connected with the lower surface of the bending rod 11; during operation, when the bearing plate 9 rotates, the bearing plate 9 can simultaneously drive the jack-prop 13 on the surface of the bearing plate to move, the jack-prop 13 can drive the bending rod 11 on the top of the jack-prop to rotate, the bending rod 11 can rotate towards one side of the limiting groove 12 on the surface of the limiting frame 41, then the bending rod 11 can be clamped in the limiting groove 12 to limit the limiting frame 41 and the curved embedded rod 42, the phenomenon that the article is subjected to overlarge shaking force during hoisting is avoided, the curved embedded rod 42 breaks away from the inner problem of the annular clamping groove 6, and safety accidents are avoided.
The shape of the bending rod 11 is matched with the shape of the limit groove 12; the surface of the bending rod 11 is fixedly connected with a limit spring 14; one side of the limit spring 14, which is far away from the bending rod 11, is fixedly connected with the surface of the supporting seat 2; in operation, the limiting spring 14 is arranged on one side of the bending rod 11, so that the bending rod 11 can be conveniently clamped in the limiting groove 12, and the limiting frame 41 can be conveniently fixed.
The bottom end of the bending rod 11 is fixedly connected with a plurality of first limiting teeth 15; the inner wall of the limit groove 12 is fixedly connected with a plurality of second limit teeth 16; the shapes of the first limiting teeth 15 and the second limiting teeth 16 are inclined conical; the first limiting teeth 15 and the second limiting teeth 16 are arranged, when the bending rod 11 is clamped in the limiting groove 12, the first limiting teeth 15 and the second limiting teeth 16 at different positions are clamped with each other, the strength of the bending rod 11 in the limiting groove 12 is improved, and the phenomenon that the bending rod 11 is broken due to overlarge stress is avoided.
The first limiting teeth 15 and the second limiting teeth 16 are arranged in a one-to-one correspondence; the shape of the bottom of the bending rod 11 is matched with the shape of the limit groove 12; the shape of the bottom of the bending rod 11 is matched with the shape of the limiting groove 12, so that the bending rod 11 can be conveniently clamped in the limiting groove 12.
The inner wall of the arc-shaped groove is prevented from being provided with a rubber pad by the bearing plate 9; the lower surface of the lifting hook ring 101 is provided with a rotating shaft matched with the bearing plate 9; during operation, the rubber pad is arranged, so that the article support frame can be conveniently placed, and the lifting of the article support frame is facilitated.
Example two
As shown in fig. 7, in comparative example one, another embodiment of the present invention is: the bottom of the curved embedded rod 42 is rotatably connected with a roller 17; the length of the roller 17 is smaller than that of the annular clamping groove 6; the bottom surface of the curved embedded rod 42 is provided with a rotating shaft matched with the roller 17; the roller 17 is arranged at the bottom of the curved embedded rod 42, and when the curved embedded rod 42 and the annular clamping groove 6 are in contact with each other, the roller 17 rolls in the annular clamping groove 6, so that the curved embedded rod 42 is conveniently clamped in, and meanwhile, the curved embedded rod 42 is conveniently taken out later.
When the lifting hook is used, when an article is not lifted by the lifting hook body 1, the curved embedded rod 42 is not clamped in the annular clamping groove 6, when the article is lifted, a worker breaks the handheld part 5, so that the handheld part 5 drives the two V-shaped rods 4 and the curved embedded rod 42 to rotate away from the annular clamping groove 6, then the supporting frame of the article is arranged at the inner wall of the lifting hook ring 101, then the handheld part 5 is reversed, the handheld part 5 drives the V-shaped rods 4 and the curved embedded rod 42 to move towards one side close to the annular clamping groove 6, then the curved embedded rod 42 is clamped in along the annular clamping groove 6, the curved embedded rod 42 can be adaptively changed according to the shape of the annular clamping groove 6, the length of the lifting hook ring 101 is further changed, the supporting frame of the article can be limited, the phenomenon that the article falls off due to shaking of the lifting hook in the lifting process is avoided, and the safety of the article in the lifting process is improved;
the upper end surface of the annular clamping groove 6 is provided with an arc chamfer, so that the curved embedded rod 42 can be conveniently clamped in along the annular clamping groove 6, the shape of the curved embedded rod is provided along the hook-shaped position of the lifting hook, the curved embedded rod 42 is adaptively changed according to the shape of the annular clamping groove 6 and is propped against the inner wall of the annular clamping groove 6, and higher safety is provided for articles during lifting; when the support frame of the article is arranged on the surface of the hanging hook ring 101 and is in hanging, the support frame of the article is contacted with the bearing plate 9, the bearing plate 9 is pressed and pulls the elastic pull rope 10 at the upper end of the bearing plate, the elastic pull rope 10 pulls the telescopic column 8 and the telescopic spring 81 to move, and then the bent bearing plate 9 and the telescopic column 8 limit the other side of the support frame of the article, so that the stability of the article in hanging is ensured, and the potential safety hazard in working is eliminated;
when the bearing plate 9 rotates, the bearing plate 9 simultaneously drives the jacking columns 13 on the surface of the bearing plate to move, the jacking columns 13 can drive the bending rods 11 on the top ends of the jacking columns to rotate, the bending rods 11 can rotate towards one side of the limiting grooves 12 on the surface of the limiting frame 41, then the bending rods 11 can be clamped in the limiting grooves 12 to limit the limiting frame 41 and the curved embedded rods 42, the phenomenon that the curved embedded rods 42 are separated from the annular clamping grooves 6 due to overlarge shaking force when articles are hoisted is avoided, and safety accidents are avoided; the first limiting teeth 15 and the second limiting teeth 16 are arranged, when the bending rod 11 is clamped in the limiting groove 12, the first limiting teeth 15 and the second limiting teeth 16 at different positions are mutually clamped, so that the strength of the bending rod 11 in the limiting groove 12 is improved, and the phenomenon of collapse caused by overlarge stress of the bending rod 11 is avoided; the shape of the bottom of the bending rod 11 is matched with the shape of the limiting groove 12, so that the bending rod 11 can be conveniently clamped in the limiting groove 12.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (6)
1. The anti-drop device of the crane hook comprises a hook body (1); the method is characterized in that: the lifting hook body (1) consists of a lifting hook ring (101) and a connecting ring (102); the lifting hook ring (101) and the connecting ring (102) are integrally designed; the outer surface of the lifting hook ring (101) is fixedly provided with a supporting seat (2); a rotating rod (3) is rotatably connected inside the supporting seat (2); both ends of the rotating rod (3) are fixedly provided with V-shaped rods (4); the two V-shaped rods (4) and the rotating rod (3) are integrally designed; a handheld part (5) is fixedly arranged between the two V-shaped rods (4); a limiting frame (41) is fixedly arranged on one side, far away from the handheld part (5), between the two V-shaped rods (4); the surface of the limiting frame (41) is fixedly provided with a curved embedded rod (42); an annular clamping groove (6) is formed in the hooked top end of the lifting hook ring (101); the shape of the annular clamping groove (6) is matched with the shape of the curved embedded rod (42);
the annular clamping groove (6) is formed along the hook-shaped part of the lifting hook ring (101), and the upper end surface of the annular clamping groove (6) is provided with an arc chamfer; the length of the annular clamping groove (6) is matched with the length of the curved embedded rod (42); the surface of the hand-held part (5) is sleeved with a rubber pad, and the rubber pad is provided with anti-skid patterns; the bottom end of the curved embedded rod (42) is arc-shaped;
the surface of the lifting hook ring (101) is fixedly provided with a column cavity (7); a telescopic column (8) is fixedly arranged in the column-shaped cavity (7); the outer surface of the telescopic column (8) is sleeved with a telescopic spring (81); the lower surface of the lifting hook ring (101) is rotatably connected with a bearing plate (9); the upper end of the bearing plate (9) is fixedly connected with an elastic pull rope (10); the upper end of the elastic pull rope (10) is fixedly connected with the bottom end of the telescopic column (8); an arc-shaped groove is formed in the surface of the bearing plate (9); the lower end surface of the supporting seat (2) is rotatably connected with a bending rod (11); a limiting groove (12) is formed in the surface of the limiting frame (41); the outer surface of the bearing plate (9) is fixedly provided with a jack post (13); the top end of the top column (13) is rotationally connected with the lower surface of the bending rod (11).
2. The traveling crane hook drop-off prevention device according to claim 1, wherein: the shape of the bending rod (11) is matched with the shape of the limit groove (12); the surface of the bending rod (11) is fixedly connected with a limit spring (14); one side of the limit spring (14) far away from the bending rod (11) is fixedly connected with the surface of the supporting seat (2).
3. The traveling crane hook drop-off prevention device according to claim 2, wherein: the bottom end of the bending rod (11) is fixedly connected with a plurality of first limiting teeth (15); the inner wall of the limit groove (12) is fixedly connected with a plurality of second limit teeth (16); the first limiting teeth (15) and the second limiting teeth (16) are inclined conical.
4. A crane hook release preventing apparatus according to claim 3, wherein: the first limiting teeth (15) and the second limiting teeth (16) are arranged in a one-to-one correspondence manner; the shape of the bottom of the bending rod (11) is matched with the shape of the limit groove (12).
5. The traveling crane hook drop-off prevention device according to claim 1, wherein: a rubber pad is arranged on the inner wall of the arc-shaped groove on the surface of the bearing plate (9); the lower surface of the lifting hook ring (101) is provided with a rotating shaft which is matched with the bearing plate (9).
6. The travelling crane hook drop-out prevention device according to claim 5, wherein: the bottom of the curved embedded rod (42) is rotatably connected with a roller (17); the length of the roller (17) is smaller than that of the annular clamping groove (6); the bottom surface of the curved embedded rod (42) is provided with a rotating shaft matched with the roller (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310218399.XA CN116281574B (en) | 2023-03-07 | 2023-03-07 | Anti-drop device for crane lifting hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310218399.XA CN116281574B (en) | 2023-03-07 | 2023-03-07 | Anti-drop device for crane lifting hook |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116281574A CN116281574A (en) | 2023-06-23 |
| CN116281574B true CN116281574B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310218399.XA Active CN116281574B (en) | 2023-03-07 | 2023-03-07 | Anti-drop device for crane lifting hook |
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| CN (1) | CN116281574B (en) |
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| CN116788970B (en) * | 2023-08-15 | 2024-08-13 | 江苏沙钢钢铁有限公司 | Electric furnace steelmaking electrode replacement device |
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|---|---|
| CN116281574A (en) | 2023-06-23 |
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Address after: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Fengzhen Shagang Technology Building Patentee after: Jiangsu Shagang Steel Co.,Ltd. Country or region after: China Patentee after: JIANGSU SHAGANG GROUP Co.,Ltd. Address before: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Fengzhen Shagang Technology Building Patentee before: ZHANGJIAGANG HONGCHANG STEEL PLATE Co.,Ltd. Country or region before: China Patentee before: JIANGSU SHAGANG GROUP Co.,Ltd. |