A steel coil lifting lug

Abstract

The utility model relates to a steel roll hoisting technology field, specifically design a kind of steel roll lifting lug, including stand and steel roll, and the lifting lug is connected in the lower part of stand, and the lifting lug is clamped steel roll, and the vertical setting slide bar is fixed in the front and back sides of stand, and the slide bar bottom is slidably connected in the slide sleeve, and the slide sleeve bottom is fixed with base, and the slide rail is fixed in the top of base;The slide rail vertically slides in the lower part of stand, and the pair of hinged arms are hinged in the front and back sides of stand, and the pair of hinged arms are all hinged with sliding seat, and the sliding seat is slidably connected in the slide rail, and the lifting lug is fixed in the lower part of sliding seat;Locking structure is fixed in the middle of stand, and locking head is rotatably connected in the lower part of locking structure, and the first rotary state and the second rotary state of locking head are cyclically alternated after abutting with limiting frame, and the lifting lug is horizontally moved, to adapt to steel roll of different length, and then the application range for steel roll is improved, and the setting of locking structure realizes the fixation and separation with steel roll, without manual additional adjustment.

Description

Technical Field

[0001] This utility model relates to the field of steel coil hoisting technology, specifically a steel coil lifting claw. Background Technology

[0002] When operating in ports, steel coils often need to be hoisted and transferred, which requires the use of lifting claws.

[0003] Chinese patent CN101590975A discloses a steel coil lifting device for a crane, including a lifting plate suspended below the crane, two hooks movably connected to the lifting plate and capable of hooking onto the holes of the steel coil, an upper connecting rod and a lower connecting rod forming a four-bar linkage mechanism on both sides of the lifting plate and on the hooks, respectively, and a telescopic sliding rod that can move up and down is installed on the lifting plate, with both ends of the support rod connected to the lower connecting rod and the lower hinge of the telescopic sliding rod, respectively; a crank arm that can lock the position of the telescopic sliding rod when rotated is supported on the guide sleeve of the sliding rod.

[0004] However, the following problems exist in the use of existing steel coil lifting claws: 1. Poor versatility for steel coils of different diameters. When the lifting length is short, the claws retract, and the extended part of the claws is difficult to be horizontal, resulting in a small contact area and poor stability; 2. The pressure block may shift when placed, causing uneven force. Continuing to move downwards will cause the claws to tilt, which may lead to the steel coil shifting position. Moreover, the sliding structure will experience accelerated wear after long-term use; 3. The locking structure requires manual adjustment, which is cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a steel coil lifting claw to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A steel coil lifting claw includes a column and a steel coil. A lifting claw is connected to the lower part of the column, and a lifting ring is fixed to the top of the column. The lifting claw engages with the steel coil. Vertically arranged sliding rods are fixed to the front and rear sides of the column. The bottom of each sliding rod is slidably connected to a sliding sleeve. A base is fixed to the bottom of the sliding sleeve, and a slide rail is fixed above the base. Pairs of hinged arms are hinged to the front and rear sides of the column. Each pair of hinged arms is hinged to a sliding seat, which is slidably connected to the slide rail and located at both ends of the slide rail. The lifting claw is fixed below the sliding seat, and the lifting claw has a horizontally extending, upwardly convex arc surface. A locking structure is fixed in the middle of the column. A limit frame is fixed on the upper surface of the slide rail. A locking head is rotatably connected to the lower part of the locking structure. The locking head is located above the limit frame. After it abuts against the limit frame, it rotates. The first rotation of the locking head is slidably connected to the limit frame. The second rotation of the locking head is locked inside the limit frame. The first and second rotations of the locking head alternate cyclically after abutting against the limit frame. The locking structure fixes the relative position of the slide rail and the column. After the lock is released, the slide rail moves downward relative to the column by its own weight. Under the action of the hinge arm, the slide rail moves towards the center to clamp.

[0007] As a further preferred embodiment, the locking structure includes a locking frame, a lower steering groove, an upper steering groove, and a guide pin. The locking frame is fixedly connected to the column, and the guide pin is fixed to the inner side of the locking frame. The lower and upper steering grooves are cylindrical and fixedly connected to each other, fitting with a clearance within the locking frame. The lower steering groove opens towards the axis, with an upward-facing wavy shape at its opening. The upper steering groove opens towards the axis, with a downward-facing wavy shape at its opening. The upper and lower grooves are connected, and there are four wavy protrusions on each side. The positions of the wavy protrusions in the lower and upper steering grooves are staggered. The wave tips point in the same direction; the guide pin engages with the wave-shaped groove; the locking head is fixed below the lower steering groove, the horizontal cross-section of the locking head is rectangular, and the upper surface of the limiting frame has a through hole that is clearance-fitted with the horizontal cross-section of the first rotational motion of the locking head. Its first rotational motion is slidably connected to the limiting frame, and its second rotational motion is engaged inside the limiting frame. Through the sliding of the guide pin with the lower steering groove and the upper steering groove, the locking head rotates 90°, so that the locking head switches between the first rotational motion and the second rotational motion, which is used to control the locking and unlocking of the relative position of the column and the slide rail.

[0008] As a further preferred embodiment, the lower surface of the base is V-shaped with its tip pointing upwards, and a rubber pad is fixed to the lower surface of the base to improve the alignment effect after contact and reduce the error in the hoisting position.

[0009] As a further preferred embodiment, the counterweights on the front and rear sides of the column are located above and below the connection between the slide rod and the column, and above the connection between the hinge arm and the column, to avoid the lifting claw tilting forward and backward due to the position being off-center when in contact with the steel coil.

[0010] As a further preferred embodiment, the hinge arms are provided with a first reinforcing rib on the side away from each other; the sliding sleeve is provided with a second reinforcing rib on the left and right sides to improve the structural strength.

[0011] As a further preferred embodiment, the vertical cross-section of the sliding seat is concave, and multiple rotating shafts are provided between the concave surfaces of the sliding seat, with the rotating shafts tumblingly connected to the upper and lower sides of the slide rail.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By using horizontally moving lifting claws, it can adapt to steel coils of different lengths, thereby improving the applicability of steel coils.

[0013] 2. By setting two sliding rods and sliding sleeves, the impact of force offset is reduced. In addition, rubber pads are added to the bottom of the base, and counterweights are added to both sides of the column. With the help of V-shaped base for guidance, the tilt caused by inaccurate claw position is reduced.

[0014] 3. The locking structure locks the grabber upon impact during descent, allowing for inward retraction and limiting, thus securing and separating it from the steel coil without requiring additional manual adjustment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the structure of the steel coil lifting claw of this utility model.

[0017] Figure 2 This is a side view of the steel coil lifting claw of this utility model.

[0018] Figure 3 for Figure 2 A schematic diagram of the structure excluding the rotating shaft.

[0019] Figure 4 for Figure 3 Enlarged view of point A.

[0020] Figure 5 This is a schematic diagram of the locking structure in this utility model.

[0021] Figure 6 This is a top view of the limiting frame in the locking structure of this utility model.

[0022] Figure 7 This is a perspective view of the locking head in the first state of the locking structure in this utility model, viewed from an upward angle.

[0023] In the diagram: 1. Sliding seat; 2. Hinge arm; 3. Lifting claw; 4. Steel coil; 5. Lifting ring; 6. Column; 7. Sliding rod; 8. Sliding sleeve; 9. First reinforcing rib; 10. Slide rail; 11. Base; 12. Rotating shaft; 13. Second reinforcing rib; 14. Locking frame; 15. Lower steering groove; 16. Limiting frame; 17. Locking head; 18. Upper steering groove; 19. Guide pin; 20. Counterweight. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] See Figure 1-3 As shown, a steel coil lifting claw 3 includes a column 6 and a steel coil 4. The lifting claw 3 is connected to the lower part of the column 6, and a lifting ring 5 is fixed to the top of the column 6. The column 6 has counterweights 20 on the front and rear sides. The counterweights 20 are located above the column 6 and below the connection between the sliding rod 7 and the column 6, and above the connection between the hinge arm 2 and the column 6, to prevent the lifting claw 3 from tilting forward and backward when in contact with the steel coil 4. The lifting claw 3 engages with the steel coil 4. Vertically arranged sliding rods 7 are fixed on the front and rear sides of the column 6. The bottom of the sliding rod 7 is slidably connected to the sliding sleeve 8. The bottom of the sliding sleeve 8 is fixed with a base 11. The lower surface of the base 11 is V-shaped with its tip pointing upward. A rubber pad is fixed on the lower surface of the base 11 to improve the alignment effect after contact and reduce the lifting position error. A slide rail 10 is fixed above the base 11; a pair of hinged arms 2 are hinged to both the front and rear sides of the column 6, and a first reinforcing rib 9 is provided on the side of the hinged arms 2 that is far apart from each other; a second reinforcing rib 13 is provided on the left and right sides of the sliding sleeve 8 to improve the structural strength; each pair of hinged arms 2 is hinged to a sliding seat 1, the vertical cross-section of the sliding seat 1 is concave, and multiple rotating shafts 12 are provided between the concave surfaces of the sliding seats 1, the rotating shafts 12 are tactilely connected to the upper and lower sides of the slide rail 10; the sliding seat 1 is slidably connected to the slide rail 10 and is located at both ends of the slide rail 10; the lifting claw 3 Fixed below the sliding seat 1, the lifting claw 3 has an upwardly convex arc surface extending horizontally towards the center; a locking structure is fixed in the middle of the column 6, and a limit frame 16 is fixed on the upper surface of the slide rail 10. A locking head 17 is rotatably connected to the lower part of the locking structure. The locking head 17 is located above the limit frame 16. After it abuts against the limit frame 16, it rotates. The first rotation of the locking head 17 is slidably connected to the limit frame 16, and the second rotation of the locking head 17 is engaged inside the limit frame 16. The first and second rotations of the locking head 17 alternate cyclically after abutting against the limit frame 16.

[0026] like Figures 4-7As shown in this embodiment of the invention, the locking structure includes a locking frame 14, a lower steering groove 15, an upper steering groove 18, and a guide pin 19. The locking frame 14 is fixedly connected to the column 6, and the guide pin 19 is fixed to the inner side of the locking frame 14. The lower steering groove 15 and the upper steering groove 18 are cylindrical and fixedly connected to each other, and are fitted with a clearance fit inside the locking frame 14. The lower steering groove 15 opens towards the axial side, and its groove opening is wavy upwards. The upper steering groove 18 opens towards the axial side, and its groove opening is wavy downwards. The upper and lower slots are connected, and there are four wavy protrusions on both the upper and lower sides. The wavy protrusions of the lower steering groove 15 and the upper steering groove 18 are staggered, and the tips of the waves face the same direction. The guide pin 19 cooperates with the wavy groove. The locking head 17 is fixed below the lower steering groove 15. The horizontal cross section of the locking head 17 is rectangular. The upper surface of the limiting frame 16 has a through hole that is clearance-fitted with the first rotational dynamic horizontal cross section of the locking head 17. Its first rotational dynamic is slidably connected to the limiting frame 16, and its second rotational dynamic is locked inside the limiting frame 16.

[0027] In this embodiment, during operation, when the column 6 descends to the steel coil 4, the base 11 is subjected to force, and the locking head 17 collides with the bottom of the limiting frame 16. The locking frame moves downward relative to the limiting frame, and the wavy protrusion of the lower steering groove abuts against the guide pin, causing the locking head to rotate 45°. Then, the column is lifted, and under the action of gravity, the upper steering groove moves downward. The wavy protrusion of the upper steering groove abuts against the guide pin 19, causing the locking head to rotate another 45°. Through the sliding of the guide pin 19 with the lower and upper steering grooves, the locking head 17 rotates 90°, causing the locking head 17 to switch from the second rotation dynamic to the first rotation dynamic. 17. Passing through the limit frame 16, the relative positions of the column 6 and the slide rail 10 are unlocked. The slide rail 10 moves downward relative to the column 6 by its own weight. Under the action of the articulated arm, the lifting claw moves towards the center to clamp the steel coil. When the steel coil lands, the base is stressed when the lifting claw descends, the relative position of the slide rail moves upward, and the lifting claw opens further. The rotation process is repeated, causing the locking head to rotate 90°, so that the locking head switches from the first rotation dynamic to the second rotation dynamic, fixing the relative position of the slide rail and the column. When the column is lifted again, the slide rail rises with the column, and the lifting claw remains open and separates from the steel coil, completing the lifting.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel coil lifting claw, comprising a column and a steel coil, wherein a lifting claw is connected to the lower part of the column, a lifting ring is fixed to the top of the column, and the lifting claw engages with the steel coil, characterized in that: Vertically arranged sliding rods are fixed on both the front and rear sides of the column. The bottom of the sliding rods is slidably connected to a sliding sleeve. A base is fixed to the bottom of the sliding sleeve, and a slide rail is fixed above the base. The slide rail slides vertically on the lower part of the column. The column has a pair of hinged arms hinged to both the front and rear sides, and each pair of hinged arms is hinged to a sliding seat. The sliding seat is slidably connected to the slide rail and is located at both ends of the slide rail. The lifting claw is fixed below the sliding seat and has an upward convex arc surface extending horizontally to the center. A locking structure is fixed in the middle of the column, and a limit frame is fixed on the upper surface of the slide rail. A locking head is rotatably connected to the lower part of the locking structure. The locking head is located above the limit frame and rotates after abutting against the limit frame. The first rotation of the locking head is in clearance fit with the limit frame, and the second rotation of the locking head is engaged inside the limit frame. The first and second rotations of the locking head alternate cyclically after abutting against the limit frame.

2. The steel coil lifting claw according to claim 1, characterized in that: The locking structure includes a locking frame, a lower steering groove, an upper steering groove, and a guide pin. The locking frame is fixedly connected to the column, and the guide pin is fixed inside the locking frame. The lower and upper steering grooves are cylindrical and fixedly connected to each other, with a clearance fit inside the locking frame. The lower steering groove opens towards the axis, and its opening shape is an upward wave shape. The upper steering groove opens towards the axis, and its opening shape is a downward wave shape. The upper and lower grooves are connected. There are four wave-shaped protrusions on both the upper and lower sides. The positions of the wave-shaped protrusions of the lower and upper steering grooves are staggered, and the tips of the waves face the same direction. The guide pin engages with the wave-shaped groove. The locking head is fixed below the lower steering groove. The horizontal cross-section of the locking head is rectangular. The upper surface of the limiting frame has a through hole that is clearance fit with the first rotational dynamic horizontal cross-section of the locking head. Its first rotational dynamic is slidably connected to the limiting frame, and its second rotational dynamic is engaged inside the limiting frame.

3. The steel coil lifting claw according to claim 1, characterized in that: The lower surface of the base is V-shaped with its pointed end pointing upwards, and a rubber pad is fixed to the lower surface of the base.

4. The steel coil lifting claw according to claim 1, characterized in that: The counterweights on the front and rear sides of the column are located above and below the connection between the slide rod and the column, and above the connection between the hinge arm and the column.

5. The steel coil lifting claw according to claim 1, characterized in that: The hinge arms are provided with a first reinforcing rib on the side away from each other; the sliding sleeve is provided with a second reinforcing rib on the left and right sides.

6. The steel coil lifting claw according to claim 1, characterized in that: The vertical cross-section of the sliding seat is concave, and multiple rotating shafts are provided between the concave surfaces of the sliding seat. The rotating shafts are tactilely connected to the upper and lower sides of the slide rail.

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