Hoisting device for core roller of large ring rolling machine
By designing a large ring rolling mill core roller hoisting device, and utilizing the combination of the platform's own weight and nylon ropes, the problems of high-altitude operations and unreasonable hoisting during core roller replacement were solved, thereby shortening the replacement cycle and improving production efficiency.
Patent Information
- Application Number
- CN202520042377.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-08
AI Technical Summary
In the ring rolling mill, the core roller replacement process involves problems such as working at height, improper hoisting tools, and long replacement cycles, which affect production efficiency.
A large ring rolling mill core roller hoisting device was designed, including an arched boom and a stepped platform. By utilizing the weight of the platform and the nylon rope, the core roller can be flexibly hoisted and its position adjusted, simplifying the replacement process.
It shortens the core roller replacement cycle and improves the production efficiency of the ring rolling machine.
Smart Images
Figure CN223575917U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ring rolling mill technical field, and specifically is a large -scale ring rolling mill core roller hoisting device. BACKGROUND
[0002] When the ring rolling mill is rolling ring piece, the axial rolling of the ring piece is relied on the upper and lower two conical rollers, and the radial rolling of the ring piece is relied on the core roller and the main roller. The role of the core roller is particularly important. On the one hand, the core roller is in contact with the inner hole surface of the ring piece at all times in the process of rolling the ring piece. The core roller is prone to wear, fracture, bending, deformation and other conditions under the condition of high temperature and large radial rolling force for a long time. At this time, the equipment needs to be shut down for maintenance and the core roller needs to be replaced. On the other hand, when the ring piece is profiled and rolled in the inner diameter, different ring pieces have corresponding core rollers. If there are many types of ring pieces, the core roller needs to be replaced frequently.
[0003] When the core roller is replaced, in most cases, the core roller is changed from a horizontal state to a vertical state during installation, and the core roller is changed from a vertical state to a horizontal state during disassembly. In the current process of replacing the core roller, there are some adverse factors such as workers needing to perform high-altitude operations, unreasonable lifting tools and methods (not free to convert from a vertical state to a horizontal state), and long period of hoisting and replacing the core roller, which affects the period of replacing the core roller and reduces the production efficiency. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above problems, the purpose of the utility model is to provide a large -scale ring rolling mill core roller hoisting device.
[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a large -scale ring rolling mill core roller hoisting device, comprising a lifting arm and a lifting platform, the lifting arm is an arch structure, the center of the lifting platform is provided with a stepped structure of a pull bolt round hole, the front side of the pull bolt round hole is provided with a vertical long strip-shaped notch, the left and right sides of the lifting platform are respectively fixed with a stud, the both ends of the lifting arm are respectively provided with an oil-free lubricating bushing, and the studs on each side respectively penetrate through the corresponding oil-free lubricating bushing, so that the lifting arm rotates around the stud.
[0006] Further, the lifting platform side wall on both sides of the long strip-shaped notch is respectively fixed with an adjusting nut.
[0007] Further, the lifting platform surface on both sides of the pull bolt round hole is respectively provided with an anti -rotation screw, and the anti -rotation screw on each side penetrates through an anti -rotation nut.
[0008] Further, the long strip-shaped notch of the lifting platform is respectively provided with a bevel structure, so that the long strip-shaped notch forms a horn-shaped opening structure.
[0009] Further, the adjusting nut on each side is respectively penetrated and fixed with a nylon rope.
[0010] Further, the upper end of the pull bolt round hole is provided with an annular inclined surface structure, forming a horn-shaped opening structure.
[0011] Further, the middle part of the side wall of the hanging platform opposite to the long strip-shaped notch is provided with an adjusting nut with a nylon rope.
[0012] Through the above setting, the large ring rolling machine core roller hoisting device can adjust the initial state of the hanging platform by relying on the self weight of the hanging platform and by the auxiliary adjustment of the nylon rope, facilitates the putting and hoisting of the core roller, and the operation of hoisting and replacing the core roller is simpler and faster, the replacement period of the core roller is greatly shortened, and the production efficiency of the ring rolling machine is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be further described with reference to the drawings.
[0014] Figure 1 It is the front view structural schematic drawing of the utility model;
[0015] Figure 2 It is the side view structural schematic drawing of the utility model;
[0016] Figure 3 It is the plan view structural schematic drawing of the utility model;
[0017] Figure 4 It is the three-dimensional structural schematic drawing of the utility model. PREFERRED EMBODIMENT
[0018] As Figures 1-4 shown, a large ring rolling machine core roller hoisting device, including the hanging arm 1 and the hanging platform 2, the hanging arm 1 is the arcuate structure, the center of the hanging platform 2 is provided with the pull bolt round hole of the step structure, the front side of the pull bolt round hole is provided with the vertical long strip-shaped notch, the left and right sides of the hanging platform 2 are fixed with the stud 4 respectively, the both ends of the hanging arm 1 are provided with the oil-free lubricating bushing 3 respectively, and each side stud 4 is respectively penetrated through corresponding oil-free lubricating bushing 3, so that the hanging arm 1 rotates around the stud 4.
[0019] Specific: the long strip-shaped notch both sides of the hanging platform 2 The utility model discloses a working principle: hoist horizontal placement's core roll, and hang in crane hook on the hanging frame 1, and hang away from the ground, due to the dead weight of the hanging platform 2 (the center of the hanging platform 2 is provided with the stepped structure's pull bolt round hole, and the front side of the pull bolt round hole is provided with the vertical long strip-shaped notch, so that the front side is relatively light, and the rear side is heavy) the hanging platform 2 will rotate along the axis of the stud 4, after rotating, the opening side (long strip-shaped notch) of the hanging platform 2 is upwards, at this time, manually close the lifting appliance to the pull bolt 9 at the upper end of the core roll, and the top end of the pull bolt 9 is clamped into the stepped hole of the hanging platform 2, after clamping is completed, slowly start the crane to stand up the core roll, and the core roll is hung away from the ground, and subsequent core roll replacement work is carried out, when the core roll is installed, the lifting appliance slowly falls a distance, and the nylon rope behind the hanging platform is pulled, and the lifting appliance is pulled out through the opening of the side of the hanging platform 2.
[0020] The utility model discloses a working principle: hoist horizontal placement's core roll, and hang in crane hook on the hanging frame 1, and hang away from the ground, due to the dead weight of the hanging platform 2 (the center of the hanging platform 2 is provided with the stepped structure's pull bolt round hole, and the front side of the pull bolt round hole is provided with the vertical long strip-shaped notch, so that the front side is relatively light, and the rear side is heavy) the hanging platform 2 will rotate along the axis of the stud 4, after rotating, the opening side (long strip-shaped notch) of the hanging platform 2 is upwards, at this time, manually close the lifting appliance to the pull bolt 9 at the upper end of the core roll, and the top end of the pull bolt 9 is clamped into the stepped hole of the hanging platform 2, after clamping is completed, slowly start the crane to stand up the core roll, and the core roll is hung away from the ground, and subsequent core roll replacement work is carried out, when the core roll is installed, the lifting appliance slowly falls a distance, and the nylon rope behind the hanging platform is pulled, and the lifting appliance is pulled out through the opening of the side of the hanging platform 2.
[0021] When hoisting the core roll placed vertically, the hanging frame 1 is hung on the crane hook, and the lifting appliance is close to the middle upper part of the pull bolt 9 by starting the crane, at this time, the opening of the hanging platform 2 is upwards due to the dead weight factor, at this time, the nylon rope 8 is manually pulled to make the notch of the hanging platform 2 be in the horizontal state, the position is adjusted through the nylon rope 8 on both sides of the opening of the hanging platform 2, the middle part of the pull bolt enters the stepped hole of the hanging platform 2, the lifting appliance is slowly lifted upwards by starting the crane, the top end of the pull bolt 9 is clamped into the stepped hole of the center of the hanging platform 2 under the action of the guide hole of the hanging platform 2, and the core roll is slowly lifted.
[0022] The above merely illustrates the specific implementation of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the present application shall fall within the scope of the present application.
Claims
1. A lifting device for a large ring rolling mill core roller, comprising a lifting arm (1) and a lifting platform (2), characterized in that: The boom (1) is an arched structure. The center of the platform (2) is provided with a stepped bolt hole. A vertical elongated notch is provided on the front side of the bolt hole. Studs (4) are fixed on the left and right sides of the platform (2). Oil-free lubricating bushings (3) are provided at both ends of the boom (1). The studs (4) on each side pass through the corresponding oil-free lubricating bushings (3), so that the boom (1) rotates around the studs (4).
2. The large ring rolling mill core roller hoisting device as described in claim 1, characterized in that: Adjusting nuts (5) are fixed to the side walls of the hanging platform (2) on both sides of the long strip notch.
3. The large ring rolling mill core roller hoisting device as described in claim 1, characterized in that: Anti-rotation screws (7) are fixedly installed on the surface of the two sides of the bolt hole (2), and anti-rotation nuts (6) are inserted through the anti-rotation screws (7) on each side.
4. The large ring rolling mill core roller hoisting device as described in claim 1, characterized in that: The long strip-shaped opening of the hanging platform (2) is provided with sloping structures on both sides, so that the long strip-shaped opening forms a trumpet-shaped opening structure.
5. The large ring rolling mill core roller hoisting device as described in claim 2, characterized in that: Each of the adjusting nuts (5) on each side is fixed with a nylon rope (8).
6. The large ring rolling mill core roller hoisting device as described in claim 1, characterized in that: The upper end of the bolt hole is provided with an annular inclined structure, forming a trumpet-shaped opening structure.
7. The large ring rolling mill core roller hoisting device as described in claim 5, characterized in that: An adjusting nut (5) with a nylon rope (8) is provided in the middle part of the side wall of the hanging platform (2) opposite to the long strip notch.