Electric rotary telescopic clamp

Abstract

The application discloses an electric rotary telescopic clamp, which comprises a hanger and a support, two clamping arms are slidingly matched with the support, the opposite side walls of the two clamping arms are respectively provided with a rack, a telescopic driving motor is further arranged in the support, and a gear shaft meshing with the two racks is connected with the telescopic driving motor; a clamping assembly is arranged below the support, the clamping assembly comprises a connecting frame, two swing arms are symmetrically hinged to the connecting frame, and a pressing block is arranged at the end of the swing arm; a push block assembly is arranged on the opposite side of each clamping arm, when the two clamping arms are synchronously relatively close, the push block assembly moves and pushes the swing arm to swing, so that the pressing block is in contact with the inner wall of a workpiece. The application significantly improves work efficiency, reduces manual labor intensity, realizes multi-angle rotary adjustment of the workpiece in the air, meets operation requirements under complex working conditions, realizes stable clamping of the workpiece, integrates automatic telescoping, automatic rotation and inner-outer double clamping functions, and is particularly suitable for lifting a steel coil.

Description

Technical Field

[0001] This invention relates to the field of crane technology, specifically to an electric rotary telescopic clamp. Background Technology

[0002] Against the backdrop of the global manufacturing industry's transformation towards intelligent and high-end production, the steel industry, as a pillar industry of the national economy, is undergoing a profound transformation from traditional large-scale production to lean and automated production. Steel coils, as the core semi-finished and finished product form in steel production, are handled through hoisting operations across the entire industrial chain, including steelmaking, rolling, warehousing, and transportation. The efficiency and safety of these operations directly determine the overall production efficiency and operating costs of steel mills.

[0003] However, in current steel coil hoisting operations at steel mills, traditional clamps generally suffer from drawbacks such as poor adaptability, low automation, significant safety hazards, and limited operational efficiency. With the large-scale and intelligent development of the steel industry, steel coils on steel mill production lines exhibit diverse specifications (significant differences in outer diameter, inner diameter, and width). Traditional C-hooks or simple clamps require manual adjustment of adaptation parameters, which is cumbersome and time-consuming, failing to meet the high-efficiency requirements of automated production lines. When it is necessary to adjust the angle or flip the steel coil, additional manual assistance in pushing and pulling or coordination with other lifting equipment is often required, resulting in cumbersome and inefficient operations. Furthermore, traditional clamps can only grip the outer side of the steel coil, easily leading to insecure gripping. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide an electric rotary telescopic clamp that significantly improves work efficiency and reduces manual labor intensity during cable winding. It enables multi-angle rotation adjustment of the workpiece in the air, meets the operational needs under complex working conditions, and achieves stable clamping of the workpiece. It integrates automatic telescopic, automatic rotation, and internal and external double clamping functions, and is particularly suitable for lifting steel coils. It can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electric rotary telescopic clamp, comprising a hanger and a support, wherein the support is rotatably connected to the lower part of the hanger via a hanger shaft, the support has a rectangular channel, and two clamping arms are slidably fitted in the rectangular channel. The two clamping arms are arranged parallel to each other at intervals, and racks are provided on the opposite side walls of both arms. A telescopic drive motor is also provided inside the support, and the telescopic drive motor is connected to a gear shaft that meshes with the two racks, enabling the two clamping arms to synchronously move closer or further away from each other. The bracket is provided with a clamping assembly below it. The clamping assembly includes a connecting frame with two swing arms symmetrically hinged to it. The ends of the swing arms are hinged with a clamping block for fastening the inner wall of the workpiece. On the opposite sides of the two clamping arms, there are push block assemblies that act on the corresponding swing arms. When the two clamping arms approach each other synchronously, the push block assemblies move and push the swing arms to swing so that the clamping blocks abut against the inner wall of the workpiece.

[0006] Preferably, the pusher assembly includes a sleeve, a guide rod is inserted into the sleeve, a flat plate is provided at the end of the guide rod, and a spring is sleeved on the outside of the sleeve, with one end of the spring in contact with the flat plate.

[0007] Preferably, a fixed sleeve is movably sleeved at one end of the swing arm, the end of the fixed sleeve is hinged to the clamping block, the fixed sleeve has multiple through holes along its length, the end of the swing arm has a pin hole, the swing arm is connected to the fixed sleeve by a pin, and the pin passes through the pin hole and the through hole.

[0008] Preferably, both ends of the hanging shaft are rotatably connected to the hanger and the bracket via bearings. The shaft body of the hanging shaft is provided with a large gear between the hanger and the bracket. The bracket is also provided with a rotary drive motor. The output shaft of the rotary drive motor is connected to a small gear that meshes with the large gear.

[0009] Preferably, the bracket is provided with a bearing seat adapted to the gear shaft, and the telescopic drive motor is fixed on the bearing seat through a motor support; the upper and lower side walls of the rectangular channel of the bracket are provided with self-lubricating copper plates, and the upper and lower side walls of the clamping arm are provided with sliding grooves adapted to the self-lubricating copper plates.

[0010] Preferably, the two connecting lugs of the hanger are fitted with pins, one of the connecting lugs is provided with a guide sleeve for the pin to be inserted, and one end of the pin is fitted with an L-shaped stop pin.

[0011] Preferably, the side and bottom surfaces of the clamping arm that contact the workpiece are both fixed with rubber pads by fastening screws.

[0012] Preferably, rollers are rotatably connected to the front and rear sides below the opposite ends of the two clamping arms.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a telescopic drive motor and a rotary drive motor, the automatic telescopic clamping and automatic rotation functions of the clamp are realized; the telescopic drive motor simultaneously meshes with the racks on the two clamping arms through the gear shaft, which can drive the two clamping arms to move closer or further away synchronously, which significantly improves work efficiency and reduces manual labor intensity; at the same time, the rotary drive motor drives the bracket to rotate relative to the hanger through the meshing of large and small gears, which realizes multi-angle rotation adjustment of the workpiece in the air and meets the operation needs under complex working conditions. 2. The workpiece is securely clamped by the cooperation of the push block assembly and the clamping assembly. When the clamping arm moves, it drives the push block assembly to move, which in turn pushes the swing arm to swing, causing the clamping block to expand outward to fasten the inner wall of the workpiece. It can not only clamp the outer surface of the workpiece through the outside of the clamping arm, but also clamp the inner wall of the workpiece by the internal expansion method. It is especially suitable for lifting steel coils. In summary, this invention significantly improves work efficiency, reduces manual labor intensity, enables multi-angle rotation and adjustment of workpieces in the air, meets the operational needs under complex working conditions, and achieves stable clamping of workpieces, making it particularly suitable for lifting steel coils. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial structural cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the pusher assembly structure of the present invention; Figure 5 This is a schematic diagram of the clamping assembly structure of the present invention; Figure 6 for Figure 2 A magnified schematic diagram of a local structure.

[0015] In the diagram: 1 Hanger, 1.1 L-shaped stop pin, 1.2 Guide sleeve, 1.3 Pin, 2 Small gear, 3 Hanging shaft, 4 Large gear, 5 Rotary drive motor, 6 Telescopic drive motor, 7 Bracket, 8 Push block assembly, 8.1 Sleeve, 8.2 Spring, 8.3 Guide rod, 8.4 Plate, 9 Clamping assembly, 9.1 Connecting frame, 9.2 Swing arm, 9.3 Pressing block, 9.4 Fixing sleeve, 10 Clamping arm, 11 Bearing seat, 12 Roller, 13 Gear shaft, 14, 15 Rack. Detailed Implementation

[0016] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0017] Please see Figure 1-6 The present invention provides the following technical solutions: Example 1: An electric rotary telescopic clamp includes a hanger 1 and a support 7. The support 7 is rotatably connected to the lower part of the hanger 1 via a hanger shaft 3. The support 7 has a rectangular channel with two clamping arms 10 slidably fitted in the rectangular channel. The two clamping arms 10 are arranged parallel to each other at intervals, and racks 15 are provided on the opposite side walls of both arms. The support 7 also has a telescopic drive motor 6. The telescopic drive motor 6 is connected to a gear shaft 13 that meshes with the two racks 15, and can make the two clamping arms 10 move closer or further away synchronously. The telescopic drive motor 6 can synchronously drive the two clamping arms 10 to move closer or further away, thereby clamping the workpiece. It is suitable for steel coils of different specifications. Based on this, a clamping assembly 9 is provided below the bracket 7. The clamping assembly 9 includes a connecting frame 9.1. The connecting frame 9.1 is symmetrically hinged with two swing arms 9.2. The ends of the swing arms 9.2 are hinged with a clamping block 9.3 for fastening the inner wall of the workpiece. On the opposite sides of the two clamping arms 10, there are push block assemblies 8 that act on the corresponding swing arms 9.2. When the two clamping arms 10 approach each other synchronously, the push block assembly 8 moves and pushes the swing arms 9.2 to swing so that the clamping block 9.3 abuts against the inner wall of the workpiece. The workpiece is securely clamped by the cooperation of the push block assembly 8 and the clamping assembly 9. When the clamping arm 10 moves, it drives the push block assembly 8 to move, and the push block assembly 8 in turn pushes the swing arm 9.2 to swing, so that the clamping block 9.3 expands outward to tighten the inner wall of the workpiece. It can not only clamp the outer surface of the workpiece through the outside of the clamping arm 10, but also clamp the inner wall of the workpiece by the internal expansion method, which is particularly suitable for lifting steel coils. Specifically, the push block assembly 8 includes a sleeve 8.1, a guide rod 8.3 inserted into the sleeve 8.1, a flat plate 8.4 at the end of the guide rod 8.3, and a spring 8.2 sleeved on the outside of the sleeve 8.1, with one end of the spring 8.2 in contact with the flat plate 8.4; during the process of the clamping arm 10 driving the swing arm 9.2 to perform internal support clamping, an elastic buffer is introduced to prevent the push block assembly 8 from hard-pressing the swing arm 9.2 when it moves excessively, leaving a buffer distance to avoid damage to the workpiece; Furthermore, a fixed sleeve 9.4 is movably sleeved at one end of the swing arm 9.2. The end of the fixed sleeve 9.4 is hinged to the clamping block 9.3. The clamping block 9.3 can be a rubber block with an arc-shaped surface adapted to the inner wall of the steel coil. The fixed sleeve 9.4 has multiple through holes along its length. The end of the swing arm 9.2 has a pin hole. The swing arm 9.2 is connected to the fixed sleeve 9.4 by a pin. The pin passes through the pin hole and the through hole. The extension and retraction of the fixed sleeve 9.4 can be adjusted according to the specifications of the workpiece, that is, the initial position of the clamping block 9.3 can be adjusted according to the size of the inner diameter of the workpiece, so that the clamping block 9.3 can be used for steel coils of different specifications.

[0018] Example 2: Unlike Example 1, both ends of the lifting shaft 3 are rotatably connected to the hanger 1 and the bracket 7 via bearings. The shaft of the lifting shaft 3 is located between the hanger 1 and the bracket 7 and is equipped with a large gear 4. The bracket 7 is also equipped with a rotary drive motor 5. The output shaft of the rotary drive motor 5 is connected to a small gear 2 that meshes with the large gear 4. The rotary drive motor 5 drives the small gear 2 to rotate, and the small gear 2 rotates around the large gear 4, thereby causing the bracket 7 to rotate around the axis of the lifting shaft 3. This realizes multi-angle rotation adjustment of the workpiece in the air, with diversified functions to meet different usage needs.

[0019] Example 3: Unlike Example 1, the bracket 7 is provided with a bearing seat 11 that is adapted to the gear shaft 13, and the telescopic drive motor 6 is fixed on the bearing seat 11 through the motor support; the upper and lower side walls of the rectangular channel of the bracket 7 are provided with self-lubricating copper plates, and the upper and lower side walls of the clamping arm 10 are provided with sliding grooves adapted to the self-lubricating copper plates, which significantly reduces the coefficient of friction, reduces wear, and ensures the smoothness of the telescopic movement of the clamping arm 10.

[0020] Example 4: Unlike Example 1, the two connecting lugs of the hanger 1 are fitted with pins 1.3. One of the connecting lugs is provided with a guide sleeve 1.2 for the pin 1.3 to be inserted into, and one end of the pin 1.3 is fitted with an L-shaped stop pin 1.1. The insertion fit is used, with the guide sleeve 1.2 and the L-shaped stop pin 1.1. Compared with the traditional bolt and nut fixing or welding method, this pin connection structure allows operators to quickly complete the installation or disassembly of clamps and lifting equipment without using complicated tools. In addition, rubber pads are fixed to the sides and bottom surfaces of the clamping arms 10 that contact the workpiece by fastening screws to avoid damaging the workpiece; rollers 12 are rotatably connected to the lower front and rear sides of the opposite ends of the two clamping arms 10, which helps to reduce frictional resistance during clamping and makes centering easier.

[0021] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes that fall within the meaning and scope of equivalents in the content of this invention.

Claims

1. An electric rotary telescopic clamp, characterized in that: The bracket (7) includes a hanger (1) and a support (7). The support (7) is rotatably connected to the lower part of the hanger (1) via a hanger shaft (3). The support (7) has a rectangular channel with two clamping arms (10) slidingly fitted in the rectangular channel. The two clamping arms (10) are arranged in parallel at intervals, and both of their opposite sidewalls are provided with racks (15). The support (7) is also provided with a telescopic drive motor (6). The telescopic drive motor (6) is connected to a gear shaft (13) that meshes with the two racks (15), and can make the two clamping arms (10) move closer or further away from each other synchronously. The bracket (7) is provided with a clamping assembly (9) below it. The clamping assembly (9) includes a connecting frame (9.1). The connecting frame (9.1) is symmetrically hinged with two swing arms (9.2). The ends of the swing arms (9.2) are hinged with a clamping block (9.3) for fastening the inner wall of the workpiece. The two clamping arms (10) are provided with push block assemblies (8) acting on the corresponding swing arms (9.2) on opposite sides. When the two clamping arms (10) approach each other synchronously, the push block assembly (8) moves and pushes the swing arms (9.2) to swing so that the clamping block (9.3) abuts against the inner wall of the workpiece.

2. The electric rotary telescopic clamp according to claim 1, characterized in that: The pusher assembly (8) includes a sleeve (8.1), a guide rod (8.3) is inserted into the sleeve (8.1), a plate (8.4) is provided at the end of the guide rod (8.3), and a spring (8.2) is sleeved on the outside of the sleeve (8.1), with one end of the spring (8.2) in contact with the plate (8.4).

3. The electric rotary telescopic clamp according to claim 1, characterized in that: One end of the swing arm (9.2) is movably sleeved with a fixed sleeve (9.4). The end of the fixed sleeve (9.4) is hinged to the clamping block (9.3). The fixed sleeve (9.4) has multiple through holes along its length. The end of the swing arm (9.2) is provided with a pin hole. The swing arm (9.2) is connected to the fixed sleeve (9.4) by a pin. The pin passes through the pin hole and the through hole.

4. The electric rotary telescopic clamp according to claim 1, characterized in that: Both ends of the hanging shaft (3) are rotatably connected to the hanger (1) and the bracket (7) through bearings. The shaft of the hanging shaft (3) is located between the hanger (1) and the bracket (7) and is provided with a large gear (4). The bracket (7) is also provided with a rotary drive motor (5). The output shaft of the rotary drive motor (5) is connected to a small gear (2) that meshes with the large gear (4).

5. The electric rotary telescopic clamp according to claim 1, characterized in that: The bracket (7) is provided with a bearing seat (11) adapted to the gear shaft (13), and the telescopic drive motor (6) is fixed on the bearing seat (11) through the motor support; the upper and lower side walls of the rectangular channel of the bracket (7) are provided with self-lubricating copper plates, and the upper and lower side walls of the clamping arm (10) are provided with sliding grooves adapted to the self-lubricating copper plates.

6. The electric rotary telescopic clamp according to claim 1, characterized in that: The two connecting lugs of the hanger (1) are fitted with pins (1.3), one of the connecting lugs is provided with a guide sleeve (1.2) for the pin (1.3) to be inserted, and one end of the pin (1.3) is fitted with an L-shaped stop pin (1.1).

7. The electric rotary telescopic clamp according to claim 1, characterized in that: The side and bottom surfaces of the clamping arm (10) that contact the workpiece are both fixed with rubber pads by fastening screws.

8. The electric rotary telescopic clamp according to claim 1, characterized in that: Rollers (12) are rotatably connected to the front and rear sides of the opposite ends of the two clamping arms (10).

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