Vertical roller replacing and hoisting tool

Abstract

The utility model relates to the technical field of vertical rollers, in particular to a vertical roller replacing and hoisting tool which comprises a first round block, a second round block and a vertical rod. The motor drives the threaded pipe to rotate, the threaded pipe rotates to drive the threaded rod to be screwed out, the threaded rod drives the square plate to slide downwards in the cylinder, hydraulic oil is extruded into the round pipe, the round plate is driven to slide outwards under the action of extrusion force, and therefore the round rod drives the supporting plate to conduct inner supporting and positioning on the inner wall of a center round hole of the vertical roller. Then, a lifting ring is lifted through external lifting equipment, a vertical rod drives a second round block to move upwards, a spring is compressed, the second round block drives a lifting claw to contract through a connecting rod, and a clamping part is further hooped, so that the vertical roller can be lifted; and meanwhile, the problem that the vertical roller shakes during hoisting due to inaccurate center positioning can be effectively avoided through inner supporting of the supporting plates, and safety and practicability are high.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical rolls, in particular to a hoisting tool for replacing vertical rolls. Background Technique

[0002] Multiple rolls are installed on a welded pipe production line. As components that need to be frequently replaced, the rolls need to be replaced when processing welded pipes of different sizes and shapes. A large number of rolls need to be assembled onto the roll shafts during replacement. The traditional replacement method is to manually lift the rolls and then align the holes for assembly. However, due to the heavy weight and smooth surface of the rolls, it is time-consuming and laborious, and it is easy to accidentally drop them, causing safety accidents.

[0003] However, some existing hoisting tools for replacing vertical rolls are not convenient for quickly positioning the vertical rolls. They need to be repeatedly hoisted and then manually adjusted repeatedly, which is time-consuming and laborious. Inaccurate positioning is likely to cause the vertical roll to shake after being lifted, posing a large safety hazard. For this reason, we propose a hoisting tool for replacing vertical rolls to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hoisting tool for replacing vertical rolls to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hoisting tool for replacing vertical rolls, including a first round block, a second round block and a vertical rod. The bottom end of the vertical rod penetrates through the first round block and is fixedly connected to the top of the second round block. The top end of the vertical rod is fixedly connected with a lifting ring. The vertical rod is slidably connected with the first round block. Three lifting claws are rotatably connected to the outside of the first round block through hinges. The bottom of the lifting claw is provided with an inwardly bent clamping part for clamping the vertical roll. Three connecting rods are rotatably connected to the outside of the second round block through hinges. The outer ends of the connecting rods are rotatably connected to the lifting claws through pin shafts. A spring is fixedly connected between the first round block and the second round block, and the spring is movably sleeved on the outside of the vertical rod.

[0006] Further preferably, a cylinder is fixedly connected to the bottom of the second round block. The inside of the cylinder is provided as a cavity, and the cross-section of the cavity is square. A square plate is slidably connected inside the cylinder, and hydraulic oil is filled between the square plate and the inner wall of the bottom of the cylinder.

[0007] Further preferably, a motor is fixedly connected to the bottom of the second round block. The end of the output shaft of the motor is fixedly connected with a threaded pipe. A screw rod is threadedly connected inside the threaded pipe, and the bottom end of the screw rod is fixedly connected to the top of the square plate.

[0008] Further preferably, four round pipes are fixedly connected to the outside of the cylinder. The round pipes are communicated with the cylinder through through holes to realize the inflow of hydraulic oil.

[0009] Further preferably, a circular plate is slidably connected inside the circular tube, a circular rod is fixedly connected to the outside of the circular plate, and the circular rod is slidably connected to the circular tube.

[0010] Further preferably, a support plate is fixedly connected to the outer end of the circular rod.

[0011] Further preferably, the support plate is arranged in an arc shape.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model suspends the device on the outside of the vertical roll through the lifting ring, and places the cylinder at the central circular hole of the vertical roll. The lifting claws are clamped on the outside of the convex part of the vertical roll through the clamping part. When the central positioning of the vertical roll needs to be carried out, the motor is started, the motor drives the threaded tube to rotate, the rotation of the threaded tube drives the screw rod to screw out, the screw rod drives the square plate to slide downwards in the cylinder, extrudes the hydraulic oil, the hydraulic oil is extruded into the circular tube through the through hole, and drives the circular plate to slide outwards under the action of the extrusion force. The circular plate drives the circular rod to move outwards, thereby driving the support plate to carry out internal support positioning on the inner wall of the central circular hole of the vertical roll, so that the central positioning of the vertical roll can be quickly carried out, making the lifting claws more firmly clamp the convex part of the vertical roll. Then, the lifting ring is lifted by an external lifting device, the vertical rod drives the second circular block to move upwards, the spring is compressed, the second circular block drives the lifting claws to contract through the connecting rod, and the clamping part is further tightened, so that the vertical roll can be lifted. At the same time, the internal support of the support plate can effectively avoid the problem that the vertical roll shakes when lifted due to inaccurate central positioning, and the safety and practicability are relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of a vertical roll in the prior art;

[0014] Figure 2 is a three-dimensional structural schematic diagram of the main view of the present utility model;

[0015] Figure 3 is a cross-sectional planar structural schematic diagram of the inside of the cylinder of the present utility model;

[0016] Figure 4 is Figure 1 the enlarged three-dimensional structural schematic diagram of area A in

[0017] Figure 5 is Figure 2 the enlarged three-dimensional structural schematic diagram of area B in

[0018] In the figure: 1. First circular block; 2. Second circular block; 3. Vertical rod; 4. Lifting claw; 5. Connecting rod; 6. Lifting ring; 7. Fixing part; 8. Cylinder; 9. Square plate; 10. Hydraulic oil; 11. Circular tube; 12. Through hole; 13. Circular plate; 14. Circular rod; 15. Support plate; 16. Motor; 17. Threaded tube; 18. Screw rod; 19. Spring. Detailed implementation mode

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment

[0021] Please refer to Figures 1-5, the present utility model provides a technical solution: a vertical roll replacement hoisting tooling, which includes a first round block 1, a second round block 2 and a vertical rod 3. The bottom end of the vertical rod 3 penetrates through the first round block 1 and is fixedly connected to the top of the second round block 2. The top end of the vertical rod 3 is fixedly connected with a lifting ring 6. The vertical rod 3 is slidably connected with the first round block 1. Three lifting claws 4 are rotatably connected to the outside of the first round block 1 through hinges. The bottom of the lifting claw 4 is provided with an inwardly curved clamping portion 7 for clamping the vertical roll. Three connecting rods 5 are rotatably connected to the outside of the second round block 2 through hinges. The outer ends of the connecting rods 5 are rotatably connected to the lifting claws 4 through pins. A spring 19 is fixedly connected between the first round block 1 and the second round block 2. The spring 19 is movably sleeved on the outside of the vertical rod 3. When in use, the device is hoisted outside the vertical roll through the lifting ring 6, and the cylinder 8 is placed at the central circular hole of the vertical roll. The lifting claw 4 is clamped on the outside of the convex portion of the vertical roll through the clamping portion 7. When the central positioning of the vertical roll needs to be carried out, the motor 16 is started. The motor 16 drives the threaded pipe 17 to rotate. The rotation of the threaded pipe 17 drives the screw rod 18 to screw out. The screw rod 18 drives the square plate 9 to slide downward in the cylinder 8, squeezing the hydraulic oil 10. The hydraulic oil 10 is squeezed into the round pipe 11 through the through hole 12. Under the action of the squeezing force, the round plate 13 is driven to slide outward. The round plate 13 drives the round rod 14 to move outward, thereby driving the support plate 15 to carry out inner support positioning on the inner wall of the central circular hole of the vertical roll, so that the central positioning of the vertical roll can be quickly carried out, making the lifting claw 4 more firmly clamp the convex portion of the vertical roll. Then, the lifting ring 6 is lifted by an external hoisting device. The vertical rod 3 drives the second round block 2 to move upward. The spring 19 is compressed. The second round block 2 drives the lifting claw 4 to contract through the connecting rod 5, and the clamping portion 7 is further tightened, so that the vertical roll can be lifted. At the same time, the inner support of the support plate 15 can effectively avoid the problem that the vertical roll shakes when lifted due to inaccurate central positioning, and the safety and practicability are relatively high.

[0022] In this embodiment, specifically: a cylinder 8 is fixedly connected to the bottom of the second round block 2. The inside of the cylinder 8 is provided with a cavity. The cross-section of the cavity is square. A square plate 9 is slidably connected inside the cylinder 8. Hydraulic oil 10 is filled between the square plate 9 and the inner wall of the bottom of the cylinder 8;

[0023] In this embodiment, specifically: a motor 16 is fixedly connected to the bottom of the second round block 2. The end of the output shaft of the motor 16 is fixedly connected with a threaded pipe 17. A screw rod 18 is threadedly connected inside the threaded pipe 17. The bottom end of the screw rod 18 is fixedly connected to the top of the square plate 9;

[0024] In this embodiment, specifically: four round pipes 11 are fixedly connected to the outside of the cylinder 8. The round pipes 11 are communicated with the cylinder 8 through through holes 12 to realize the inflow of the hydraulic oil 10;

[0025] In this embodiment, specifically: a circular plate 13 is slidably connected inside the circular tube 11, a circular rod 14 is fixedly connected to the outside of the circular plate 13, and the circular rod 14 is slidably connected to the circular tube 11;

[0026] In this embodiment, specifically: a support plate 15 is fixedly connected to the outer end of the circular rod 14;

[0027] In this embodiment, specifically: the support plate 15 is arranged as an arc-shaped support plate 15 is arranged as an arc.

[0028] When the utility model is working: during use, the device is suspended outside the vertical roll through the lifting ring 6, and the cylinder 8 is placed at the central circular hole of the vertical roll. The lifting claws 4 are clamped outside the convex part of the vertical roll through the clamping part 7. When the central positioning of the vertical roll needs to be carried out, the motor 16 is started. The motor 16 drives the threaded tube 17 to rotate. The rotation of the threaded tube 17 drives the screw rod 18 to screw out. The screw rod 18 drives the square plate 9 to slide downward in the cylinder 8, squeezing the hydraulic oil 10. The hydraulic oil 10 is squeezed into the circular tube 11 through the through hole 12. Under the action of the squeezing force, the circular plate 13 slides outward, the circular plate 13 drives the circular rod 14 to move outward, and then drives the support plate 15 to carry out internal support positioning on the inner wall of the central circular hole of the vertical roll, so that the central positioning of the vertical roll can be quickly carried out, and the lifting claws 4 can more firmly clamp the convex part of the vertical roll. Then, the lifting ring 6 is lifted by an external lifting device. The vertical rod 3 drives the second circular block 2 to move upward, the spring 19 is compressed, and the second circular block 2 drives the lifting claws 4 to contract through the connecting rod 5, and the clamping part 7 is further tightened, so that the vertical roll can be lifted. At the same time, the internal support of the support plate 15 can effectively avoid the problem that the vertical roll shakes when lifted due to inaccurate central positioning, and the safety and practicability are relatively high.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical roller replacement and hoisting tool, comprising a first round block (1), a second round block (2) and a vertical rod (3), characterized in that: The bottom end of the vertical rod (3) passes through the first round block (1) and is fixedly connected to the top of the second round block (2); the top end of the vertical rod (3) is fixedly connected to a lifting ring (6); the vertical rod (3) is slidably connected to the first round block (1); the outer side of the first round block (1) is connected to three lifting claws (4) by a hinge; the bottom of the lifting claw (4) is provided with an inwardly bent clamping portion (7) for clamping the vertical roller; the outer side of the second round block (2) is connected to three connecting rods (5) by a hinge; the outer end of the connecting rod (5) is connected to the lifting claw (4) by a pin; a spring (19) is fixedly connected between the first round block (1) and the second round block (2); the spring (19) is movably sleeved on the outer side of the vertical rod (3).

2. The vertical roller replacement and lifting device according to claim 1 is characterized in that: The bottom of the second round block (2) is fixedly connected to a cylinder (8), the interior of the cylinder (8) is arranged as a cavity, the cross section of the cavity is square, the interior of the cylinder (8) is slidably connected to a square plate (9), and the space between the square plate (9) and the bottom inner wall of the cylinder (8) is filled with hydraulic oil (10).

3. The vertical roller replacement and lifting device according to claim 2 is characterized in that: The bottom of the second round block (2) is fixedly connected to a motor (16), the end of the output shaft of the motor (16) is fixedly connected to a threaded tube (17), the internal thread of the threaded tube (17) is connected to a screw rod (18), and the bottom end of the screw rod (18) is fixedly connected to the top of the square plate (9).

4. The vertical roller replacement and hoisting tool according to claim 3 is characterized in that: Four circular tubes (11) are fixedly connected to the outer side of the cylinder (8); the circular tubes (11) are connected to the cylinder (8) through through holes (12) to enable the hydraulic oil (10) to flow in.

5. The vertical roller replacement and hoisting tool according to claim 4 is characterized in that: A circular plate (13) is slidably connected to the inside of the circular tube (11), a round rod (14) is fixedly connected to the outside of the circular plate (13), and the round rod (14) is slidably connected to the circular tube (11).

6. The vertical roller replacement and hoisting tool according to claim 5, characterized in that: The outer end of the round rod (14) is fixedly connected with a support plate (15).

7. The vertical roller replacement and hoisting tool according to claim 6 is characterized in that: The support plate (15) is arranged in an arc shape.

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