Crab claw type automatic clamping device

Abstract

The invention is suitable for the technical field of steel coil hoisting equipment, and provides a crab-claw-shaped automatic clamping device which comprises a support, a connecting mechanism is installed at the top of the support and connected with a hook of an external hoisting machine, a frame is arranged in the support, the two sides of the frame are fixedly connected with the support through rivets, and one end of the frame extends out of the support. A hinge shaft is rotatably mounted at the upper end in the frame, a clamping arm is fixedly mounted on the hinge shaft, the clamping arm is bent, guide grooves are formed in the two sides of the upper end of the frame, cylindrical parts are fixedly mounted on the two sides of the upper end of the clamping arm, and a first cam is fixedly mounted on the hinge shaft; the device adopts a clamp form to clamp the steel coil from the side edge, so that the steel coil is prevented from being damaged, the loss is reduced, the device can be used when the steel coil lies flat, and when the steel coil is lifted from lying flat, the steel coil is pressed downwards due to the self weight of the steel coil, and an internal cam abuts against an upper lever, so that the whole steel coil is clamped.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel coil lifting equipment, and particularly relates to a crab-claw type automatic clamping device. Background Art

[0002] In the modern steel production and processing process, as an important intermediate product, the quality and integrity of steel coils are directly related to the efficiency of subsequent processing steps and the quality of the final products. Inside the steel mill, using a crane to lift the horizontally placed steel coils is part of the daily operations. However, there is a significant technical problem in this conventional operation process: when the steel wire rope of the crane directly contacts the steel coil and attempts to lift it, the steel wire rope will exert excessive local pressure on the upper part inside the steel coil, resulting in deformation or even damage in this area. This kind of damage cannot be repaired during the subsequent steel forming process and finally becomes scrap material, which not only causes waste of raw materials, but also increases production costs and affects the economic benefits of the enterprise.

[0003] Specifically, in the traditional lifting method, the contact points between the steel wire rope and the steel coil are concentrated in a limited area, lacking an effective dispersion mechanism, so that the local stress far exceeds the bearing limit of the steel coil material. In addition, due to the certain elasticity and self-weight of the steel coil itself, it may undergo slight shaking or deviation during the lifting process, further exacerbating the damage effect of the steel wire rope on the inside of the steel coil. This kind of damage is not limited to surface scratches, but may also penetrate deep into the steel coil to form imperceptible cracks or weakening areas, laying a hidden danger for subsequent processing.

[0004] In response to the above problems, the industry has tried to reduce the damage by optimizing the steel wire rope structure, improving the lifting process and other means, but these methods can only alleviate the problems to a certain extent and fail to fundamentally solve the problem of the damage of the steel wire rope to the inside of the steel coil. Therefore, it is particularly important to develop a new type of device that can effectively protect the steel coil from damage during lifting. To solve the above problems, we propose a crab-claw type automatic clamping device. Summary of the Invention

[0005] The present invention provides a crab-claw type automatic clamping device, aiming to solve the problem that when the steel wire rope of the crane directly contacts the steel coil and attempts to lift it, the steel wire rope will exert excessive local pressure on the upper part inside the steel coil, resulting in deformation or even damage in this area.

[0006] The present invention is realized as follows: a crab-claw type automatic clamping device includes a bracket, a connection mechanism is installed at the top of the bracket, the connection mechanism is connected to the hook of an external hoist, a frame is arranged inside the bracket, both sides of the frame are fixedly connected to the bracket by rivets, and one end of the frame extends outside the bracket.

[0007] A hinge shaft is rotatably installed at the upper end inside the frame. A clamping arm is fixedly installed on the hinge shaft. The clamping arm is bent. Guide grooves are formed on both sides of the upper end of the frame. Cylindrical parts are fixedly installed on both sides of the upper end of the clamping arm. The cylindrical parts respectively penetrate into the guide grooves on the same side as them. Limiting blocks are fixedly installed at the ends of the cylindrical parts. A first cam is fixedly installed on the hinge shaft. One end of the first cam extends outside the frame. A sliding groove is arranged at the lower end of the frame. A support mechanism is slidably installed in the sliding groove. The support mechanism is used for supporting the steel coil. An adjusting mechanism is installed on the frame. The adjusting mechanism is used for adjusting the height of the support mechanism.

[0008] Preferably, the connecting mechanism includes a top plate. The top plate is fixedly installed at the upper end of the bracket. A hanging hole is formed on the top plate.

[0009] Preferably, a wear-resistant chromium plating layer is arranged on the inner wall of the hanging hole.

[0010] Preferably, the support mechanism includes a slider. The slider is slidably installed in the sliding groove. Limiting strips are fixedly installed on both sides of both ends of the slider. Two spaced plates are fixedly installed on one side of the slider. A plurality of equally spaced mounting holes are formed on both plates. A circular plate is arranged between the two plates. The circular plate is detachably installed on the two plates through fastening bolts. A bearing is sleeved and installed outside the circular plate. A rotatable friction wheel is sleeved and installed outside the bearing. The friction wheel is located below the clamping arm.

[0011] Preferably, a screw rod is arranged at the bottom of the frame. The upper end of the screw rod penetrates through the frame and is in threaded connection with the frame. The upper end of the screw rod is rotatably installed at the bottom of the slider.

[0012] Preferably, a handle is fixedly installed at the bottom of the screw rod.

[0013] Preferably, a connecting shaft is rotatably installed inside the frame. Two spaced second cams are fixedly installed on the connecting shaft. The second cams are located below the first cam and are arranged in cooperation with the first cam. A driven wheel is fixedly installed on the connecting shaft. A servo motor is fixedly installed on the frame. A driving wheel is fixedly installed at the output shaft end of the servo motor. The driving wheel is meshed with the driven wheel.

[0014] Preferably, a protective cover is arranged outside the servo motor. The protective cover is fixedly installed on the frame.

[0015] Preferably, a driving strip is arranged between the two plates. The driving strip is in contact with the friction wheel and the two are driven by friction. A cylinder is fixedly installed between the two plates. The output end of the cylinder is fixedly connected with the end of the driving strip.

[0016] Preferably, a controller is installed on the plate, and the cylinder and the servo motor are electrically connected to the controller, and the controller is used to control the operation of the cylinder and the servo motor.

[0017] Compared with the related art, the crab claw type automatic clamping device provided by the present invention has the following advantages:

[0018] Beneficial effects:

[0019] The design concept of the crab claw type automatic clamping device of the present application is derived from the imitation and innovation of the clamping mechanism of crabs in nature, and aims to achieve stable and non-destructive clamping of steel coils by simulating the clamping and releasing actions of crab claws. The device, through its unique structural design, can provide sufficient clamping force without contacting the inner side of the steel coil or with only minimal pressure, ensuring the safety and integrity of the steel coil during the hoisting process, thereby effectively avoiding material scrapping and economic losses caused by traditional hoisting methods.

[0020] The device adopts the form of a clamp to clamp the steel coil from the side, thus preventing the steel coil from being damaged and reducing losses. It can be used when the steel coil is lying flat. When the steel coil is lifted from lying flat, it will be pressed down by its own weight, and the upper lever will be supported by the internal cam, thereby clamping the entire steel coil. The lower support part can be adjusted to facilitate clamping steel coils of different sizes and widths. In summary, the development of a crab claw type automatic clamping device is not only an effective way to solve the current problem of damage during steel coil lifting, but also can promote technological progress in the steel industry and improve production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a working schematic diagram of the present invention;

[0022] Figure 2 The structure of the present invention is schematically shown Figure 1 ;

[0023] Figure 3 The structure of the present invention is schematically shown Figure 2 ;

[0024] Figure 4 It is a partial enlarged schematic diagram of the structure of the slider in the present invention;

[0025] Figure 5 It is a partial structural plan view of the friction wheel in the present invention;

[0026] Figure 6 This is an enlarged schematic diagram of the partial structure of the first cam in the present invention. Figure 1 ;

[0027] Figure 7 This is an enlarged schematic diagram of the partial structure of the first cam in the present invention.Figure 2 。

[0028] In the figure: support 1, top plate 2, hanging hole 3, frame 4, hinge shaft 5, clamping arm 6, guide groove 7, cylindrical part 8, limit block 9, first cam 10, chute 11, slider 12, limit bar 13, plate 14, mounting hole 15, circular plate 16, fastening bolt 17, bearing 18, friction wheel 19, screw 20, connecting shaft 21, second cam 22, driven wheel 23, servo motor 24, driving wheel 25, protective cover 26, driving bar 27, air cylinder 28, controller 29. Specific embodiments

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0030] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] A preferred embodiment of the crab-claw type automatic clamping device provided by the present invention is as Figures 1 to 7 shown:

[0032] A crab-claw type automatic clamping device includes a support 1. A connecting mechanism is installed at the top of the support 1, and the connecting mechanism is connected to the hook of an external hoist. A frame 4 is arranged inside the support 1. Both sides of the frame 4 are fixedly connected to the support 1 by rivets, and one end of the frame 4 extends outside the support 1.

[0033] A hinge shaft 5 is rotatably installed at the upper end inside the frame 4. A clamping arm 6 is fixedly installed on the hinge shaft 5. The clamping arm 6 is arranged in a bent shape. Guide grooves 7 are opened on both sides of the upper end of the frame 4. Cylindrical parts 8 are fixedly installed on both sides of the upper end of the clamping arm 6. The cylindrical parts 8 respectively penetrate into the guide grooves 7 on the same side as them. Limit blocks 9 are fixedly installed at the ends of the cylindrical parts 8. A first cam 10 is fixedly installed on the hinge shaft 5. One end of the first cam 10 extends outside the frame 4. A sliding groove 11 is arranged at the lower end of the frame 4. A support mechanism is slidably installed in the sliding groove 11. The support mechanism is used to support the steel coil. An adjusting mechanism is installed on the frame 4. The adjusting mechanism is used to adjust the height of the support mechanism.

[0034] Among them, the connecting mechanism includes a top plate 2. The top plate 2 is fixedly installed at the upper end of the bracket 1. A hanging hole 3 is opened on the top plate 2. A wear-resistant chromium plating layer is arranged on the inner wall of the hanging hole 3. The hook of the external hoist is hung in the hanging hole 3. The wear-resistant chromium plating layer can improve the wear resistance of the hanging hole 3.

[0035] Among them, the support mechanism includes a slider 12. The slider 12 is slidably installed in the sliding groove 11. Limit strips 13 are fixedly installed on both sides of both ends of the slider 12. Two spaced plates 14 are fixedly installed on one side of the slider 12. A plurality of equally spaced mounting holes 15 are opened on both plates 14. A circular plate 16 is arranged between the two plates 14. The circular plate 16 is detachably installed on the two plates 14 through fastening bolts 17. A bearing 18 is sleeved and installed on the circular plate 16. A rotatable friction wheel 19 is sleeved and installed on the bearing 18. The friction wheel 19 is located below the clamping arm 6. A screw rod 20 is arranged at the bottom of the frame 4. The upper end of the screw rod 20 penetrates through the frame 4 and is threadedly connected with the frame 4. The upper end of the screw rod 20 is rotatably installed at the bottom of the slider 12. A handle is fixedly installed at the bottom of the screw rod 20.

[0036] In this embodiment, the hook of the external hoist is hung in the hanging hole 3. The working schematic diagram of the device can be referred to Figure 1 as shown. By placing the steel coil between the clamping arm 6 and the plate 14, the friction wheel 19 contacts the inner side of the steel coil. The side of the steel coil contacts the convex part of the first cam 10. The steel coil drives the first cam 10 to rotate around the hinge shaft 5. The clamping arm 6 rotates synchronously around the hinge shaft 5. The cylindrical part 8 on the clamping arm 6 slides in the guide groove 7, so as to drive the lower end of the clamping arm 6 to press on the top of the steel coil. The steel coil is clamped and fixed by the cooperation of the clamping arm 6, the plate 14 and the friction wheel 19.

[0037] The design concept of the crab claw type automatic clamping device is derived from the imitation and innovation of the clamping mechanism of crabs in nature. It aims to simulate the clamping and releasing action of crab claws through the clamp arm 6 to achieve stable and non-destructive clamping of the steel coil. Through its unique structural design, the device can provide sufficient clamping force without contacting the inner side of the steel coil or only contacting with minimal pressure, ensuring the safety and integrity of the steel coil during the hoisting process, thereby effectively avoiding material scrapping and economic losses caused by traditional hoisting methods.

[0038] The clamp arm 6 in the device is in the form of a clamp, which clamps the steel coil from the side, thus preventing the steel coil from being damaged and reducing losses. The device can be used when the steel coil is lying flat. When the steel coil is lifted from lying flat, it will be pressed down by its own weight, and the internal first cam 10 will support the upper lever-type clamp arm 6, thereby firmly clamping the entire steel coil, and the clamp arm 6 will automatically move.

[0039] By rotating the screw 20, the slider 12 is driven to move along the direction of the slide slot 11, and the height of the slider 12 can be adjusted to make the plate 14 move synchronously, and the distance between the friction wheel 19 and the clamping arm 6 can be adjusted. At the same time, the circular plate 16 can be installed at the mounting holes 15 at different positions, and the upper, lower, left and right positions of the friction wheel 19 can be adjusted, so as to facilitate the clamping of steel coils of different sizes and widths.

[0040] In a further preferred embodiment of the present invention:

[0041] Among them, a connecting shaft 21 is rotatably installed in the frame 4, and two second cams 22 are fixedly installed on the connecting shaft 21, which are arranged at intervals. The second cam 22 is located below the first cam 10 and is arranged in cooperation with the first cam 10. A driven wheel 23 is fixedly installed on the connecting shaft 21, and a servo motor 24 is fixedly installed on the frame 4. A driving wheel 25 is fixedly installed on the output shaft end of the servo motor 24, and the driving wheel 25 is meshed with the driven wheel 23. A protective cover 26 is arranged outside the servo motor 24, and the protective cover 26 is fixedly installed on the frame 4, and the servo motor 24 inside is protected by the protective cover 26.

[0042] A driving bar 27 is provided between the two plates 14. The driving bar 27 contacts the friction wheel 19 and the two are driven by friction. A cylinder 28 is fixedly installed between the two plates 14. The output end of the cylinder 28 is fixedly connected to the end of the driving bar 27. A controller 29 is installed on the plate 14. The cylinder 28 and the servo motor 24 are electrically connected to the controller 29. The controller 29 is used to control the cylinder 28 and the servo motor 24 to work.

[0043] In this embodiment, after the device clamps the steel coil, the steel coil is lifted to the unloading position by the lifting device. Then, the controller 29 controls the servo motor 24 to operate. The servo motor 24 drives the driving wheel 25 to rotate, and the driving wheel 25 drives the driven wheel 23 to rotate. The driven wheel 23, the connecting shaft 21, and the second cam 22 rotate synchronously. The convex part of the second cam 22 presses on the first cam 10, thereby driving the first cam 10 to rotate and separating the upper end of the clamping arm 6 from the steel coil. In cooperation with the controller 29 controlling the cylinder 28 to operate, the cylinder 28 drives the driving bar 27 to move and drives the friction wheel 19 to rotate. There is a large frictional force between the friction wheel 19 and the steel coil. Thus, the friction wheel 19 drives the steel coil to move towards the side away from the frame 4. During unloading, the device can automatically complete the unloading work of the steel coil.

[0044] It should be noted that the circuits, electronic components, and modules involved in the present invention are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present invention does not involve improvements to software and methods either.

[0045] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections between devices or units can be in the form of telecommunications or other forms.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, combine, add, delete, or make other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A crab-claw type automatic clamping device, characterized in that, It includes a bracket (1), a connecting mechanism is installed on the top of the bracket (1), the connecting mechanism is connected to the hook of an external hoisting machine, a frame (4) is arranged inside the bracket (1), both sides of the frame (4) are fixedly connected to the bracket (1) by rivets, and one end of the frame (4) extends outside the bracket (1). An articulated shaft (5) is rotatably installed at the upper end inside the frame (4), a clamping arm (6) is fixedly installed on the articulated shaft (5), the clamping arm (6) is arranged in a bent shape, guide grooves (7) are formed on both sides of the upper end of the frame (4), cylindrical parts (8) are fixedly installed on both sides of the upper end of the clamping arm (6), the cylindrical parts (8) respectively penetrate into the guide grooves (7) on the same side as them, limit blocks (9) are fixedly installed at the ends of the cylindrical parts (8), a first cam (10) is fixedly installed on the articulated shaft (5), one end of the first cam (10) extends outside the frame (4), a sliding groove (11) is arranged at the lower end of the frame (4), a supporting mechanism is slidably installed in the sliding groove (11), the supporting mechanism is used for supporting the steel coil, and an adjusting mechanism is installed on the frame (4), the adjusting mechanism is used for adjusting the height of the supporting mechanism.

2. The crab-claw type automatic clamping device according to claim 1, wherein, The connecting mechanism includes a top plate (2), the top plate (2) is fixedly installed at the upper end of the bracket (1), and a hanging hole (3) is formed in the top plate (2).

3. The crab-claw type automatic clamping device according to claim 2, wherein A wear-resistant chromium plating layer is arranged on the inner wall of the hanging hole (3).

4. The crab-claw type automatic clamping device according to claim 1, wherein, The supporting mechanism includes a slider (12), the slider (12) is slidably installed in the sliding groove (11), limiting strips (13) are fixedly installed on both sides of both ends of the slider (12), two spaced plates (14) are fixedly installed on one side of the slider (12), a plurality of equally spaced mounting holes (15) are formed in both of the plates (14), a circular plate (16) is arranged between the two plates (14), the circular plate (16) is detachably installed on the two plates (14) by fastening bolts (17), a bearing (18) is sleeved and installed on the circular plate (16), and a rotatable friction wheel (19) is sleeved and installed on the bearing (18), and the friction wheel (19) is located below the clamping arm (6).

5. The crab-claw type automatic clamping device according to claim 4, wherein A screw rod (20) is arranged at the bottom of the frame (4), the upper end of the screw rod (20) penetrates through the frame (4) and is in threaded connection with the frame (4), and the upper end of the screw rod (20) is rotatably installed at the bottom of the slider (12).

6. The crab-claw type automatic clamping device according to claim 5, wherein A handle is fixedly installed at the bottom of the screw rod (20).

7. The crab-claw type automatic clamping device according to claim 5, wherein, A connecting shaft (21) is rotatably installed inside the frame (4), two spaced second cams (22) are fixedly installed on the connecting shaft (21), the second cams (22) are located below the first cam (10) and are arranged in cooperation with the first cam (10), a driven wheel (23) is fixedly installed on the connecting shaft (21), a servo motor (24) is fixedly installed on the frame (4), a driving wheel (25) is fixedly installed at the output shaft end of the servo motor (24), and the driving wheel (25) is meshed with the driven wheel (23).

8. The crab-claw type automatic clamping device according to claim 7, wherein, A protective cover (26) is provided outside the servo motor (24), and the protective cover (26) is fixedly installed on the frame (4).

9. The crab-claw type automatic clamping device according to claim 7, wherein, A drive bar (27) is provided between the two plates (14). The drive bar (27) is in contact with the friction wheel (19) and the two are driven by friction. A cylinder (28) is fixedly installed between the two plates (14), and the output end of the cylinder (28) is fixedly connected to the end of the drive bar (27).

10. The crab-claw type automatic clamping device according to claim 9, wherein A controller (29) is installed on the plate (14). The cylinder (28) and the servo motor (24) are both electrically connected to the controller (29), and the controller (29) is used to control the operation of the cylinder (28) and the servo motor (24).

Images