Disassembling and assembling device for bearing seat of plate and strip rolling mill
By designing a plate and strip rolling mill bearing seat disassembly and assembly device including pulling jaws and pulling jaw cylinders, the equipment damage and safety risks caused by bearing seat locking are solved, and efficient and safe bearing seat removal operations are achieved.
Patent Information
- Application Number
- CN202422138969.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-02
AI Technical Summary
When the bearings of the plate and strip mill are damaged, the bearing seats are easily locked, resulting in undisassembly, resulting in equipment damage and property losses. The existing removal methods have safety risks and inefficiency problems.
A plate-strip roller mill bearing seat disassembly and assembly device is designed including pulling jaws and pulling jaw oil cylinders. The outer ring of the bearing seat is hooked by hooking the swing arm and oil cylinders, and the bearing seat is safely removed.
This device can effectively avoid equipment damage caused by bearing seat lock, reduce safety risks, simplify the dismantling process, improve working efficiency, and is suitable for rolling mill bearing seats of different specifications.
Smart Images
Figure CN222957946U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of maintenance disassembly and assembly tools for strip mills, and particularly relates to a disassembly and assembly device for a bearing housing of a strip mill. Background Art
[0002] In the case of an accident occurring to the finishing work roll mill used for strips, resulting in the bearing housing being locked and unable to be normally disassembled, only a ram or the like can be used for destructive demolition, which easily damages the bearing housing of the mill, leading to property losses.
[0003] Currently, the following problems exist in the disassembly and assembly operations of the work rolls of strip mills:
[0004] 1. When an accident occurs to the finishing work roll mill used in the hot strip production line, such as bearing damage, the bearing housing will be locked on the roll and cannot be removed, resulting in the bearing housing being scrapped and unable to be used continuously, causing losses to fixed assets.
[0005] 2. When it is necessary to disassemble an accident roll mill, the accident roll mill needs to be fixed on a hydraulic roll disassembly trolley, and a ram, gas cutting, etc. are used for coordinated disassembly. Inevitably, the bearing housing of the mill and the roll disassembly trolley will be damaged during the impact process, increasing the difficulty of secondary repair, and there is a certain probability of causing irreversible damage to the roll neck, resulting in waste of spare parts costs.
[0006] 3. During the disassembly operation, due to factors such as large impact force and insecure fixation of the mill, the mill will also move, easily causing safety accidents.
[0007] 4. For each disassembly operation, at least 3 people are required to cooperate, which takes at least 3 hours and at most several days, consuming time and effort, and having low operation efficiency.
[0008] Therefore, there is an urgent need to design a disassembly and assembly device for the bearing housing of a strip mill to solve the problems of high safety risks and low operation efficiency in the existing bearing housing disassembly and assembly operations. Content of the Utility Model
[0009] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a disassembly and assembly device for a bearing housing of a strip mill.
[0010] The technical solution adopted by the utility model to solve its technical problems is: a disassembly and assembly device for a bearing housing of a strip mill, including a pull claw and a pull claw oil cylinder. Two symmetrically arranged pull claws are provided. The front part of the pull claw is in the shape of a hook, and the hook-shaped part at the front of the pull claw hooks the outer ring of the bearing housing. The rear part of the pull claw is rotatably connected to a swing arm, and the swing arm is rotatably connected to the middle part of the cylinder body of the pull claw oil cylinder. A support plate is installed at the end of the cylinder rod of the pull claw oil cylinder, and both sides of the support plate are rotatably connected to the pull claw through connecting plates.
[0011] Specifically, the middle part of the claw is rotatably connected to the connecting plate through a pin shaft, and the other side of the connecting plate is rotatably connected to the support plate through a pin shaft. The support plate is fixedly installed on the cylinder rod of the claw cylinder.
[0012] Specifically, the rear part of the claw is rotatably connected to the swing arm through a pin shaft, the rear part of the swing arm is rotatably connected to the outer wall of the claw cylinder through a pin shaft, the middle part of the swing arm is rotatably connected to the cylinder rod of the adjusting cylinder, and the cylinder body of the adjusting cylinder is rotatably connected to the lifting seat through a pin shaft.
[0013] Specifically, the rear part of the cylinder body of the claw cylinder is fixedly installed on the lifting seat. Sliders are provided on both sides of the lifting seat, and the sliders are slidably connected to the sliding grooves. The sliding grooves are arranged on both inner sides of the lifting bracket. The bottom of the lifting seat is connected to the cylinder rod of the lifting cylinder, and the lifting cylinder controls the lifting of the lifting seat and the claw cylinder to adjust the height.
[0014] Specifically, the bottom of the lifting bracket is installed on the vehicle body, and the bottom of the cylinder body of the lifting cylinder is installed on the vehicle body.
[0015] Specifically, a hydraulic station is installed on the vehicle body, and the hydraulic station is connected to the claw cylinder, the adjusting cylinder and the lifting cylinder through pipelines.
[0016] Specifically, wheels are provided at the bottom of the vehicle body, and a handle is provided on one side of the vehicle body.
[0017] The utility model has the following beneficial effects:
[0018] The disassembling and assembling device for the bearing seat of the plate and strip rolling mill designed by the utility model directly squats the bearing seat of the accident rolling mill on the ground, pushes the pulling machine over, opens the clamping claws to lock the bearing seat, and then uses the claw cylinder to lift it to carry out the demolition operation. It is simple, convenient and easy to operate, reduces the safety risk and the risk of equipment damage, and improves the work efficiency.
[0019] The disassembling and assembling device for the bearing seat of the plate and strip rolling mill designed by the utility model can adjust the height through the lifting cylinder, and can realize the demolition operation of bearing seats of different specifications of rolling mills. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is the front view of the disassembling and assembling device for the bearing seat of the plate and strip rolling mill.
[0021] Figure 2 is the top view of the disassembling and assembling device for the bearing seat of the plate and strip rolling mill.
[0022] As shown in the figure: 1 - claw; 2 - claw cylinder; 3 - adjusting cylinder; 4 - swing arm; 5 - connecting plate; 6 - lifting cylinder; 7 - lifting seat; 8 - lifting bracket; 9 - vehicle body; 10 - hydraulic station; 11 - handle. DETAILED DESCRIPTION OF THE INVENTION
[0023] The following will further describe in a clear and complete manner the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] As Figure 1 - Figure 2 shown, a disassembly and assembly device for a bearing housing of a strip rolling mill includes pulling claws 1, a pulling claw oil cylinder 2, a lifting oil cylinder 6, and a vehicle body 9. There are two symmetrically arranged pulling claws 1. The front part of the pulling claw 1 is in the shape of a hook, and the hook-shaped part at the front of the pulling claw 1 hooks the outer ring of the bearing housing. The rear part of the pulling claw 1 is rotatably connected to a swing arm 4. The swing arm 4 is rotatably connected to the middle part of the cylinder body of the pulling claw oil cylinder 2. A support plate is installed at the end of the cylinder rod of the pulling claw oil cylinder 2. Both sides of the support plate are rotatably connected to the pulling claw 1 through connecting plates 5.
[0025] The middle part of the pulling claw 1 is rotatably connected to the connecting plate 5 through a pin shaft. The other side of the connecting plate 5 is rotatably connected to the support plate through a pin shaft. The support plate is fixedly installed on the cylinder rod of the pulling claw oil cylinder 2.
[0026] The rear part of the pulling claw 1 is rotatably connected to the swing arm 4 through a pin shaft. The rear part of the swing arm 4 is rotatably connected to the outer wall of the pulling claw oil cylinder 2 through a pin shaft. The middle part of the swing arm 4 is rotatably connected to the cylinder rod of the adjusting oil cylinder 3 through a pin shaft. The cylinder body of the adjusting oil cylinder 3 is rotatably connected to the lifting seat 7 through a pin shaft.
[0027] The rear part of the cylinder body of the pulling claw oil cylinder 2 is fixedly installed on the lifting seat 7. Sliders are provided on both sides of the lifting seat 7. The sliders are slidably connected to the sliding grooves. The sliding grooves are arranged on both inner sides of the lifting bracket 8. The bottom of the lifting seat 7 is connected to the cylinder rod of the lifting oil cylinder 6. The lifting oil cylinder 6 controls the lifting and height adjustment of the lifting seat 7 and the pulling claw oil cylinder 2.
[0028] The bottom of the lifting bracket 8 is installed on the vehicle body 9. The bottom of the cylinder body of the lifting oil cylinder 6 is installed on the vehicle body 9.
[0029] A hydraulic station 10 is installed on the vehicle body 9. The hydraulic station 10 is connected to the pulling claw oil cylinder 2, the adjusting oil cylinder 3, and the lifting oil cylinder 6 through pipelines.
[0030] Wheels are provided at the bottom of the vehicle body 9. A handle 11 is provided on one side of the vehicle body 9.
[0031] The working principle of the present utility model:
[0032] 1. First, according to the experience of removing accident rolls in the past, determine the model specifications of the hydraulic system of the pulling machine (this device), as well as the size selection of the main cylinder (pulling claw oil cylinder 2) of the pulling machine to ensure that it can meet the maximum pulling force requirement.
[0033] 2. Measure the length dimension of the drive side roll neck of the finishing work roll, and determine the maximum length of the pulling claw 1 of the drawing machine to ensure that the device can be used at both ends of the drive side and the operating side of the roll.
[0034] 3. Then, according to the dimensions of the bearing housing of the finishing work roll mill, design the opening and closing range of the pulling claw 1 to ensure that it can be used for various different bearing housings of the mill. And an adjusting oil cylinder 3 is designed on the pulling claw 1, and the opening and closing range of the pulling claw 1 is controlled by a hydraulic system, which is simple to operate and has high reliability.
[0035] 4. Finally, according to the dimensions of the maximum diameter and the minimum diameter of the work roll, design the lifting oil cylinder 6 to facilitate the adjustment of the height of the pulling claw 1 so as to adapt to rolls of different diameters.
[0036] 5. To improve the operation efficiency and facilitate operation in different areas, the above system is concentrated on a trolley (car body 9) to realize the rapid movement of the drawing machine, which is convenient for operation and storage.
[0037] The utility model effectively removes the bearing housing of the accident roll mill by designing and manufacturing a special removal device, and will not cause the bearing housing to be scrapped due to the inability to remove the locked bearing housing, thus improving the equipment utilization rate. By using this special disassembly and assembly device, a destructive removal such as using a rammer is not required, which will not cause damage to the hydraulic roll removal trolley, nor will it cause damage to the roll neck of the roll, greatly reducing the spare part repair cost. By using this special device, the rolling mill is not fixed on the roll removal trolley, and there will be no tipping phenomenon, eliminating the occurrence of safety accidents. The maximum pulling force of this device can reach 250T, which can effectively remove the bearing housings of various accident roll mills, and the operation time is greatly shortened, improving the operation efficiency.
[0038] The utility model is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the utility model, as long as they have the same or similar technical solutions as the utility model, shall fall within the protection scope of the utility model.
[0039] The technologies, shapes, and structures not described in detail in the utility model are all well-known technologies.
[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0041] Although embodiments of the present utility model 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 utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A disassembly and assembly device for a bearing seat of a plate and strip rolling mill, characterized in that: It includes a pulling claw and a pulling claw cylinder. The pulling claw is provided with two symmetrical settings. The front part of the pulling claw is hook-shaped. The hook at the front part of the pulling claw hooks the outer ring of the bearing seat. The rear part of the pulling claw is rotatably connected to the swing arm. The swing arm is rotatably connected to the middle part of the cylinder body of the pulling claw cylinder. A support plate is installed at the end of the cylinder rod of the pulling claw cylinder. The two sides of the support plate are rotatably connected to the pulling claw through connecting plates.
2. The disassembly and assembly device of the bearing seat of the plate and strip rolling mill according to claim 1, characterized in that: The middle part of the pulling claw is rotatably connected to the connecting plate through a pin shaft, and the other side of the connecting plate is rotatably connected to the supporting plate through a pin shaft, and the supporting plate is fixedly installed on the cylinder rod of the pulling claw oil cylinder.
3. The disassembly and assembly device of the bearing seat of the plate and strip rolling mill according to claim 1, characterized in that: The rear part of the pulling claw is rotatably connected to the swing arm through a pin shaft, the rear part of the swing arm is rotatably connected to the outer wall of the pulling claw cylinder through a pin shaft, the middle part of the swing arm is rotatably connected to the cylinder rod of the adjusting cylinder through a pin shaft, and the cylinder body of the adjusting cylinder is rotatably connected to the lifting seat through a pin shaft.
4. The disassembly and assembly device of the bearing seat of the plate and strip rolling mill according to claim 3, characterized in that: The rear part of the cylinder body of the claw cylinder is fixedly installed on the lifting seat, and sliders are provided on both sides of the lifting seat. The sliders are slidably connected to the slide grooves, and the slide grooves are arranged on both sides of the inner part of the lifting bracket. The bottom of the lifting seat is connected to the cylinder rod of the lifting cylinder. The lifting cylinder controls the lifting seat and the claw cylinder to lift and adjust the height.
5. The disassembly and assembly device of the bearing seat of the plate and strip rolling mill according to claim 4, characterized in that: The bottom of the lifting bracket is installed on the vehicle body, and the bottom of the cylinder body of the lifting cylinder is installed on the vehicle body.
6. The disassembly and assembly device of the bearing seat of the plate and strip rolling mill according to claim 5, characterized in that: A hydraulic station is installed on the vehicle body, and the hydraulic station is connected with a claw oil cylinder, an adjusting oil cylinder and a lifting oil cylinder through pipelines.
7. The disassembly and assembly device of the bearing seat of the plate and strip rolling mill according to claim 5, characterized in that: The bottom of the vehicle body is provided with wheels, and one side of the vehicle body is provided with a handle.