Holding ring lifting appliance

Abstract

The invention discloses an embracing ring lifting appliance which is characterized in that the embracing ring lifting appliance comprises a main beam and two embracing ring devices, a fixed connecting arm and a guide connecting arm which are integrated are arranged above the embracing ring devices, an adjusting mechanism is arranged at the bottom of the main beam, and the distance between the two embracing ring devices can be adjusted after the adjusting mechanism operates; the adjusting mechanism comprises an adjusting motor and a lead screw, the lead screw is installed on the bottom face of the main beam through a connecting base, the lead screw is arranged in the length direction of the main beam, the two ends of the lead screw penetrate through guide connecting arms in a threaded fit mode, and when the adjusting motor drives the lead screw to rotate, the guide connecting arms on the two sides drive the embracing ring device to move horizontally; when the embracing ring lifting appliance is used, the distance between the two embracing ring devices can be adjusted, the embracing ring shaft roller stability is high during lifting, in addition, the clamp worm gear can rotate within a preset range during embracing ring driving, the stability is high, and the embracing ring lifting appliance is suitable for application and popularization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting machinery, in particular to a ring embracing hoist. BACKGROUND

[0002] As a key core component in industrial production, such as the roll in metallurgical industry, the drying cylinder roll in papermaking industry, the impression roll in printing industry, etc., the shaft roll often has the characteristics of large weight (usually up to several tons to several tens of tons), large volume, high precision requirement and easy damage on surface, and the lifting operation in the production, processing, assembly and transportation process of the shaft roll is directly related to the production efficiency, product quality and workshop operation safety. Therefore, the lifting hoist for lifting the shaft roll as a key medium connecting the hoisting equipment and the shaft roll workpiece, its stability, adaptability and safety play an irreplaceable important role in the smooth development of the whole industrial production process.

[0003] The existing lifting method of shaft roll mainly falls into two categories, one is to adopt rope binding lifting, that is, to bind the shaft roll at multiple points by flexible ropes such as steel wire rope and nylon sling, and then to realize lifting by the hoist, and the other is to adopt rigid clamping lifting, that is, to complete the lifting by clamping and fixing the shaft roll at both ends or outer periphery through the mechanical clamping structure on the hoist, and the rigid clamping lifting is more widely used in the lifting of medium and large shaft rolls due to the relatively convenient operation and strong control ability on the shaft roll posture.

[0004] However, the existing lifting method of shaft roll has many drawbacks, and in actual use, the adaptability is poor, the length of the shaft roll cannot be adjusted, and when clamping and lifting, the stability of the shaft roll in the air is poor, which has certain safety hazards, and the use effect is not ideal. SUMMARY

[0005] The purpose of the present application is to solve the above problems and provide a ring embracing hoist which can adjust the distance between the two ring embracing devices, has strong stability when lifting the shaft roll, and the clamp worm gear can rotate within a preset range when the ring embracing device is driven, and the ring embracing hoist has strong stability.

[0006] To achieve the above purpose, the technical scheme of the present application is as follows: a ring embracing hoist, characterized in that it comprises a main beam and two groups of ring embracing devices below the main beam, an integral fixed connecting arm and a guide connecting arm are arranged above the ring embracing devices, the ring embracing devices are slidably connected with the main beam through the fixed connecting arm and the guide connecting arm, an adjusting mechanism is arranged at the bottom of the main beam, and the adjusting mechanism can adjust the distance between the two groups of ring embracing devices after operation.

[0007] Preferably, the adjusting mechanism comprises an adjusting motor and a screw rod, the screw rod is installed on the bottom surface of the main beam through a connecting base, the screw rod is arranged along the length direction of the main beam, the screw rod is penetrated through the guide connecting arms through thread cooperation at both ends, when the adjusting motor drives the screw rod to rotate, the guide connecting arms on both sides drive the clamping ring device to translate.

[0008] Preferably, the top of the guide connecting arm is in open U shape, linear slide rails are fixed on both sides of the main beam, and the open inner wall of the guide connecting arm is matched with the linear slide rails.

[0009] Preferably, safety stops are arranged at both ends of each linear slide rail, and the clamping ring device translates and adjusts between the corresponding two safety stops.

[0010] Preferably, the clamping ring device comprises a shell, an arch hole is arranged below the shell, a semicircular clamp worm wheel is arranged in the arch hole, a reduction motor is arranged at the top of one side of the shell, the output shaft of the reduction motor extends downward and is coaxially and drivingly connected with a rotating shaft, a worm is arranged on the rotating shaft and matched with the clamp worm wheel, and the clamp worm wheel reciprocatingly rotates through the worm after the reduction motor operates.

[0011] Preferably, two groups of semicircular ring seats are further arranged on the inner top wall of the arch hole of the shell, the semicircular ring seats are fixed on the inner wall of the arch hole through bolts, the clamp worm wheel is arranged between the two semicircular ring seats, the clamp worm wheel rotates between the two semicircular ring seats when the worm rotates, and the semicircular ring seats form a clamping ring with the clamp worm wheel during hoisting.

[0012] Preferably, a plurality of arc-shaped bent plates are further arranged on the inner surface of the clamp worm wheel and fixed with the clamp worm wheel through bolts.

[0013] Preferably, a reserved hole for mounting a detector is further arranged on the outer wall of the shell and extends obliquely into the arch hole.

[0014] Preferably, a plurality of rollers are further arranged on the top of the main beam, and the rollers are connected with the overhead crane after being matched with the steel wire rope.

[0015] This invention discloses a ring-gripping lifting device, characterized by comprising a main beam and two sets of ring-gripping devices. An integral fixed connecting arm and a guide connecting arm are disposed above each ring-gripping device. An adjustment mechanism is disposed at the bottom of the main beam. This adjustment mechanism, when in operation, can adjust the distance between the two sets of ring-gripping devices. The adjustment mechanism includes an adjustment motor and a lead screw. The lead screw is mounted on the bottom surface of the main beam via a connecting seat and is arranged along the length of the main beam. Both ends of the lead screw pass through the guide connecting arm via threaded engagement. When the adjustment motor drives the lead screw to rotate, the guide connecting arms on both sides drive the ring-gripping devices to translate. Compared with the prior art, this ring-gripping lifting device has the advantages of being able to adjust the distance between the two ring-gripping devices during use, providing strong stability of the ring-gripping rollers during lifting, and ensuring that the clamp worm gear can rotate within a preset range during ring-gripping drive, resulting in high stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the ring lifting device of the present invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the overall structure of the ring lifting device of the present invention. Figure 2 .

[0018] Figure 3 For the present invention Figure 1 A magnified structural diagram of point A in the middle.

[0019] Figure 4 This is a schematic diagram of the adjusting mechanism in the ring lifting device of the present invention.

[0020] Figure 5 This is a schematic diagram of the clamping device in the clamping device of the present invention. Figure 1 .

[0021] Figure 6 This is a schematic diagram of the clamping device in the clamping device of the present invention. Figure 2 .

[0022] Figure 7 This is a schematic diagram of the internal structure of the clamping device in the clamping device of the present invention. Figure 1 .

[0023] Figure 8 This is a schematic diagram of the internal structure of the clamping device in the clamping device of the present invention. Figure 2 .

[0024] Figure 9 For the present invention Figure 7 A magnified structural diagram at point B in the middle.

[0025] In the diagram: 1. Main beam; 11. Roller; 12. Linear slide rail; 13. Safety stop; 2. Adjustment mechanism; 21. Adjustment motor; 22. Lead screw; 23. Connecting seat; 3. Clamping ring device; 31. Housing; 32. Clamping worm gear; 33. Arc-shaped bent plate; 34. Semi-circular ring seat; 35. Gear motor; 36. Rotating shaft; 37. Worm; 38. Reserved hole; 4. Fixed connecting arm; 5. Guide connecting arm. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0027] Please refer to Figures 1-9 A ring-holding lifting device is characterized in that it includes a main beam 1 and two sets of ring-holding devices 3 below the main beam 1. An integral fixed connecting arm 4 and a guide connecting arm 5 are provided above the ring-holding device 3. The ring-holding device 3 is slidably connected to the main beam 1 through the fixed connecting arm 4 and the guide connecting arm 5. An adjustment mechanism 2 is provided at the bottom of the main beam 1. After the adjustment mechanism 2 is in operation, it can adjust the distance between the two sets of ring-holding devices 3.

[0028] In this embodiment, a plurality of rollers 11 are also provided on the top of the main beam 1. The rollers 11 are connected to the upper crane after cooperating with the wire rope. The crane can move along the guide rail to move the ring clamping device 3 and the hoisting roller.

[0029] In use, the distance between the two sets of clamping devices 3 is first adjusted by adjusting mechanism 2 to match the shaft roller of the corresponding length. When the crane moves the main beam 1 directly above the shaft roller, the wire rope lowers the main beam, causing the main beam 1 and clamping devices 3 to gradually descend. After the clamping devices 3 are in coordination with the surrounding area, the two sets of clamping devices 3 clamp the two ends of the shaft roller. After clamping, the crane lifts the main beam 1 and shaft roller again. Since the shaft roller is heavy and cylindrical, clamping and lifting can prevent the shaft roller from swaying, which can greatly improve the lifting stability and eliminate safety hazards in the workshop.

[0030] In this embodiment, the adjustment mechanism 2 includes an adjustment motor 21 and a lead screw 22. The lead screw 22 is installed on the bottom surface of the main beam 1 through a connecting seat 23. The lead screw 22 is arranged along the length direction of the main beam 1. The two ends of the lead screw 22 pass through the guide connecting arm 5 through the threaded engagement. When the adjustment motor 21 drives the lead screw 22 to rotate, the guide connecting arms 5 on both sides drive the (fixed connecting arm) clamping device 3 to move horizontally.

[0031] In other words, after the motor 21 is running, the distance between the two clamping devices 3 can be adjusted by the lead screw 22. This distance is determined by the length of the shaft roller to ensure that the two clamping devices 3 lift the two ends of the shaft roller, thereby achieving stable lifting and movement, and also increasing the overall applicability.

[0032] Please refer to this again. Figure 4 The top of the guide connecting arm 5 is U-shaped with an opening, and linear slide rails 12 are fixed on both sides of the main beam 1. The inner wall of the opening of the guide connecting arm 5 is engaged with the linear slide rails 12.

[0033] Understandably, the U-shaped opening guide connecting arm 5 extends upward, engages with both sides of the main beam 1, and cooperates with the linear slide rails 12 on both sides of the main beam 1. The single ring device 3 can move horizontally on the linear slide rail 12 on one side to adjust the spacing.

[0034] To prevent the ring-holding device 3 from detaching from the linear guide rail 12, safety stops 13 are provided at both ends of each linear guide rail 12. The safety stops 13 are fixed to the outside of the main beam 1, and anti-collision rubber blocks are also provided on the inside of the safety stops 13. When the guide connecting arm 5 moves to its maximum extent, it will impact the rubber blocks, thereby protecting the safety stops 13. That is, the ring-holding device 3 can be adjusted to move between the corresponding two safety stops 13 to meet the requirements of ring-holding and lifting of the shaft roller within a certain range.

[0035] Please refer to this again. Figures 5-8 In this embodiment, the clamping ring device 3 includes a housing 31, with an arched opening at the bottom of the housing 31. A semi-circular clamping worm gear 32 is disposed inside the arched opening. A reduction motor 35 is mounted on the top side of one side of the housing 31. The output shaft of the reduction motor 35 extends downward and is coaxially connected to a rotating shaft 36. A worm 37 that cooperates with the clamping worm gear 32 is disposed on the rotating shaft 36. After the reduction motor 35 runs, it drives the clamping worm gear 32 to reciprocate through the worm 37.

[0036] Understandably, since the clamp worm gear 32 is semi-circular and driven by the worm 37 on one side, it cannot rotate 360°. In use, the clamp worm gear 32 needs to be driven to rotate back and forth by the forward and reverse rotation of the geared motor 35.

[0037] To improve the stability of the clamp worm gear 32, the housing 31 is also provided with two sets of semi-circular ring seats 34 on the inner top wall of the arch. The semi-circular ring seats 34 are fixed to the inner wall of the arch by bolts. The clamp worm gear 32 is disposed between the two semi-circular ring seats 34. When the worm 37 rotates, the clamp worm gear 32 rotates between the two semi-circular ring seats 34. The two semi-circular ring seats 34 can limit the clamp worm gear 32 and prevent it from deviating during rotation, thus affecting the lifting accuracy.

[0038] Before hoisting, the crane moves the main beam 1 directly above the roller, and the wire rope lowers the main beam 1, so that the main beam 1 and the clamping device 3 gradually descend. At this time, the reduction motor 35 drives the clamp worm wheel 32 to rotate through the worm 37. After rotation, the clamp worm wheel 32 coincides with the semi-circular ring seat 34, and the bottom of the arch is connected to the outside. As the main beam 1 and the retaining ring device 3 gradually descend, the shaft roller will gradually enter the arch until the outer circumference of the shaft roller contacts the inner wall of the semi-circular ring seat 34. At this time, the geared motor 35 runs in reverse and drives the clamp worm wheel 32 to rotate again through the worm 37. This process causes the clamp worm wheel 32 to rotate out from between the two semi-circular ring seats 34. After rotating out, the semi-circular ring seats 34 and the clamp worm wheel 32 form a ring, and the shaft roller is located inside the ring.

[0039] Once the rollers are securely held in place, the crane operates again, lifting the main beam 1 as a whole via wire rope. At this time, the rollers below also rise, and as the crane moves, the rollers are transported to the required position. After hoisting, the bottom circumference of the shaft roller first contacts the roller drag, and then the reduction motor 35 runs, so that the clamp worm gear 32 coincides with the semi-circular ring seat 34. The bottom of the overlapping arch is connected to the outside again. When removing, the main beam 1 and the ring-holding device 3 can be lifted by a crane. This process can be repeated to hoist heavy and large-volume shaft rollers.

[0040] To prevent the clamp worm gear 32 from being damaged by pressure, and to prevent the clamp worm gear 32 from scratching the shaft roller, a plurality of arc-shaped bending plates 33 are provided on the inner surface of the clamp worm gear 32. The arc-shaped bending plates 33 are fixed to the clamp worm gear 32 by bolts. The curvature of the arc-shaped bending plates 33 is adapted to the curvature of the clamp worm gear 32, and the arc-shaped bending plates can be made of alloy material. A rubber protective layer can be provided on their inner arc-shaped surface.

[0041] As a preferred embodiment, the outer wall of the housing 31 is also provided with a reserved hole 38 for installing a detector. The reserved hole 38 extends obliquely into the arch, and the detector can be a position detector, a force detector, or other detectors that improve the ring clamping accuracy.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A lifting ring, characterized in that, The system includes a main beam and two sets of clamping ring devices below the main beam. An integral fixed connecting arm and a guide connecting arm are provided above the clamping ring devices. The clamping ring devices are slidably connected to the main beam through the fixed connecting arm and the guide connecting arm. An adjustment mechanism is provided at the bottom of the main beam. After the adjustment mechanism is activated, it can adjust the distance between the two sets of clamping ring devices.

2. The lifting ring according to claim 1, characterized in that, The adjustment mechanism includes an adjustment motor and a lead screw. The lead screw is installed on the bottom surface of the main beam through a connecting seat. The lead screw is set along the length of the main beam. The two ends of the lead screw pass through the guide connecting arms through threaded engagement. When the adjustment motor drives the lead screw to rotate, the guide connecting arms on both sides drive the clamping ring device to move horizontally.

3. The lifting ring according to claim 2, characterized in that, The top of the guide connecting arm is U-shaped with an opening, and linear slide rails are fixed on both sides of the main beam. The inner wall of the opening of the guide connecting arm is engaged with the linear slide rails.

4. The lifting ring according to claim 3, characterized in that, Each of the linear guide rails is provided with safety stops at both ends, and the clamping device is adjusted by translation between the corresponding two safety stops.

5. The lifting ring according to any one of claims 1-4, characterized in that, The clamping device includes a housing with an arched opening at the bottom. A semi-circular clamping worm gear is installed inside the arched opening. A geared motor is installed on the top side of the housing. The output shaft of the geared motor extends downward and is coaxially connected to the rotating shaft. A worm gear that cooperates with the clamping worm gear is installed on the rotating shaft. After the geared motor runs, it drives the clamping worm gear to rotate back and forth through the worm gear.

6. The lifting ring according to claim 5, characterized in that, The shell is also provided with two sets of semi-circular ring seats on the inner top wall of the arch. The semi-circular ring seats are fixed to the inner wall of the arch by bolts. The clamp worm gear is located between the two semi-circular ring seats. When the worm rotates, the clamp worm gear rotates between the two semi-circular ring seats. During hoisting, the semi-circular ring seats and the clamp worm gear form a clamping ring.

7. The lifting ring according to claim 5, characterized in that, The inner surface of the clamp worm gear is also provided with multiple arc-shaped curved plates, which are fixed to the clamp worm gear by bolts.

8. The lifting ring according to claim 5, characterized in that, The outer wall of the housing is also provided with a reserved hole for installing the detector, and the reserved hole extends obliquely into the arch.

9. The lifting ring according to claim 1, characterized in that, The top of the main beam is also equipped with multiple rollers, which are connected to the crane above in conjunction with the wire rope.

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