Roller replacing device and method
By designing a roll replacement device that combines the trolley hook and electric reverse chain, the problem of difficult and low efficiency of roll replacement is solved, safe and efficient roll replacement is achieved, and costs and risks are reduced.
Patent Information
- Application Number
- CN202510535677.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2025-07-08
AI Technical Summary
In the prior art, the roll replacement is difficult, low efficiency, and safety hazards. Especially when using a C-type hook, the lifting height is limited, the hook is difficult when the weight is large, and storage is difficult, and regular flaw inspection is required.
A roll replacement device is designed, including a first lifting mechanism and a second lifting mechanism. By combining the trolley hook and an electric reverse chain, the rotating design of the connecting rope, the lifting ring and the connecting shaft is combined with the locking component to achieve safe and fast lifting of the rolling roller.
It improves the efficiency of roll replacement, reduces the difficulty of replacement, ensures construction safety, simplifies the process, reduces the cost of work, and avoids bumps and wire rope damage during lifting.
Smart Images
Figure CN120268809A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of blast furnace metallurgical equipment, and particularly relates to a roll replacement device and method. Background Art
[0002] The plate and strip vertical rolling mill mainly controls the width of products in the hot rolling mill. The axes of its two rolls are perpendicular to the ground level. The driving method is mostly upper driving, and the motor and reducer are installed on the installation platform directly above the roll. The outlet of the reducer is connected to the roll through a universal joint shaft, so as to achieve power transmission. In this design form, when replacing the roll, the overhead crane cannot directly lift it. Separate tooling and construction methods are required to lift the roll, so as to achieve the replacement of the roll. The replacement time of the roll directly affects the output of the production line, so the faster the roll replacement, the better.
[0003] At present, the most commonly used scheme for replacing the roll is to design a special C-shaped hook. The overhead crane hangs the upper hook body of the C-shaped hook, and the lower hook body of the C-shaped hook extends into the shielding equipment. Through the structure of the C-shaped hook, the problem of lifting inside the equipment is solved. However, using the C-shaped hook has great disadvantages. One is that the C-shaped hook greatly reduces the lifting height of the lifted object and increases the replacement difficulty. The other is that when the weight of the object to be lifted is relatively large, the C-shaped hook will be relatively large, resulting in difficult hanging of the overhead crane hook, reducing the replacement efficiency, and the large C-shaped hook is difficult to store and also requires regular flaw detection inspection. Summary of the Invention
[0004] The purpose of the present invention is to provide a roll replacement device and method, which solves the technical problems of large replacement difficulty and low replacement efficiency in the prior art, ensures construction safety, and reduces the cost of replacement tooling.
[0005] One aspect of the present invention provides a roll replacement device, including:
[0006] A first lifting mechanism, the first end of the first lifting mechanism is connected to the overhead crane hook;
[0007] A second lifting mechanism, the first end of the second lifting mechanism is connected to the motor installation platform of the reducer of the vertical rolling mill;
[0008] A connecting mechanism, the second ends of the first lifting mechanism and the second lifting mechanism are both connected to the first end of the connecting structure, and the angle between the first lifting mechanism and the second lifting mechanism is adjustable. The second end of the connecting mechanism is connected to the roll of the vertical rolling mill.
[0009] Further, the first lifting mechanism includes:
[0010] A first lifting ring, the first lifting ring is connected to the first end of the connecting mechanism;
[0011] A connecting rope, the first end of the connecting rope is connected to the hook of the overhead crane, and the second end of the connecting rope is connected to the first lifting ring.
[0012] Further, the second lifting mechanism includes:
[0013] A second lifting ring, the second lifting ring is connected to the first end of the connecting mechanism;
[0014] An electric chain hoist, the first end of the electric chain hoist is connected to the motor mounting platform, and the second end of the electric chain hoist is connected to the second lifting ring.
[0015] Further, the connecting mechanism includes:
[0016] A connecting shaft, both the first lifting ring and the second lifting ring are sleeved on the connecting shaft, and the first lifting ring and the second lifting ring can rotate around the connecting shaft;
[0017] A first connecting plate and a second connecting plate, the first ends of the first connecting plate and the second connecting plate are respectively fixed on both sides of the connecting shaft;
[0018] A locking part, the locking part is detachably fixed to the second ends of the first connecting plate and the second connecting plate.
[0019] Further, the locking part includes a pin and a lock nut.
[0020] Further, the roll changing device further includes: a platform fillet, and the platform fillet is arranged on one side of the motor mounting platform close to the hook of the overhead crane.
[0021] Another aspect of the present invention provides a roll changing method, including:
[0022] Connect the roll changing device described above to the roll;
[0023] First, lift the roll with the electric chain hoist;
[0024] Then, lift the roll by the hook of the overhead crane to complete the replacement of the roll.
[0025] Further, connecting the roll changing device to the roll includes:
[0026] Sleeve the first lifting ring and the second lifting ring on the connecting shaft, and fixedly connect the first ends of the first connecting plate and the second connecting plate on both sides of the connecting shaft;
[0027] Connect the first end of the connecting rope to the hook of the overhead crane, and connect the second end of the connecting rope to the first lifting ring;
[0028] Connect the first end of the electric chain hoist to the motor mounting platform, and connect the second end of the electric chain hoist to the second lifting ring.
[0029] Insert the roll onto the pin. The two ends of the pin are respectively connected to the second ends of the first connecting plate and the second connecting plate, and are locked with lock nuts.
[0030] Further, when the electric chain hoist lifts the roll, when the roll is higher than the vertical rolling mill housing, the electric chain hoist stops operating.
[0031] Further, when the electric chain hoist stops operating, raise the overhead crane hook at the same time to tighten the connecting rope, and then lower the electric chain hoist so that the weight of the roll is completely borne by the overhead crane hook, and disconnect the connection between the electric chain hoist and the second lifting ring, thereby realizing the lifting out of the roll.
[0032] A roll replacement device and method provided by the present invention, through the structural design of jointly lifting the roll by the first lifting mechanism and the second lifting mechanism, improves the roll replacement efficiency of the vertical rolling mill, simplifies the replacement process, reduces the replacement difficulty, reduces the cost of replacement tooling, and ensures safe construction. Description of the Drawings
[0033] Figure 1 Schematic structural diagram of a roll replacement device provided by an embodiment of the present invention connected to a roll;
[0034] Figure 2 is Figure 1 Side view of the roll replacement device shown;
[0035] Figure 3 is Figure 1 Schematic structural diagram of the roll replacement device shown when lifting the roll in the original position;
[0036] Figure 4 is Figure 1 Schematic structural diagram of the roll replacement device shown when using an electric chain hoist to lift the roll;
[0037] Figure 5 is Figure 1 Schematic structural diagram of the roll replacement device shown when the overhead crane hook lifts the roll.
[0038] Reference Signs:
[0039] 1 - Overhead Crane Hook; 2 - Motor Mounting Platform; 3 - Roll; 4 - First Lifting Ring; 5 - Connecting Rope; 6 - Second Lifting Ring; 7 - Electric Chain Hoist; 8 - Connecting Shaft; 9 - First Connecting Plate; 10 - Second Connecting Plate; 11 - Pin; 12 - Lock Nut; 13 - Platform Fillet. Detailed Embodiments
[0040] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.
[0041] In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.
[0042] To address the deficiencies of existing leak test equipment, the present application designs a new type of leak test equipment for adjustable pitch propeller shafts, which can simultaneously complete the leak tests of the inner oil pipes of each shaft section of the adjustable pitch propeller shaft system in the in-field in advance. This can save a large amount of time in the entire assembly process of the adjustable pitch propeller shaft, and save manpower and material resources.
[0043] One aspect of the present application provides a roll changing device, in combination with Figures 1-5 As shown, one aspect of the present invention provides a roll changing device, including a first lifting mechanism, a second lifting mechanism and a connecting mechanism. The first end of the first lifting mechanism is connected to the overhead crane hook 1; the first end of the second lifting mechanism is connected to the motor mounting platform 2 of the vertical mill; the second ends of the first lifting mechanism and the second lifting mechanism are both connected to the first end of the connecting structure, and the angle between the first lifting mechanism and the second lifting mechanism is adjustable. The second end of the connecting mechanism is connected to the roll 3 of the vertical mill.
[0044] In some embodiments, in combination with Figure 1 、 Figure 2 As shown, the first lifting mechanism includes a first lifting ring 4 and a connecting rope 5. The first lifting ring 4 is connected to the first end of the connecting mechanism; the first end of the connecting rope 5 is connected to the hook of the overhead crane, and the second end of the connecting rope 5 is connected to the first lifting ring 4. In some embodiments, in combination with Figure 1 、 Figure 2 As shown, the second lifting mechanism includes a second lifting ring 6 and an electric chain hoist 7. The second lifting ring 6 is connected to the first end of the connecting mechanism; the first end of the electric chain hoist 7 is connected to the motor mounting platform 2, and the second end of the electric chain hoist 7 is connected to the second lifting ring 6.
[0045] In some embodiments, the first lifting ring 4 can be interchanged with the second lifting ring 6. That is, the connecting rope 5 can cooperate with the second lifting ring 6, and the electric chain hoist 7 can also cooperate with the first lifting ring 4.
[0046] In some embodiments, such as Figure 1 shown, the connecting mechanism includes a connecting shaft 8, a first connecting plate 9, a second connecting plate 10 and a locking portion. The first sling ring 4 and the second sling ring 6 are both sleeved on the connecting shaft 8, and the first sling ring 4 and the second sling ring 6 can rotate around the connecting shaft 8; the first ends of the first connecting plate 9 and the second connecting plate 10 are respectively fixed on both sides of the connecting shaft 8; the locking portion is detachably fixed on the second ends of the first connecting plate 9 and the second connecting plate 10.
[0047] In some embodiments, the locking portion includes a pin 11 and a lock nut 12.
[0048] In some embodiments, the locking portion can also adopt a pin 11 and a circlip structure to realize the shaft head fixing form. As long as the structure can ensure that the connecting plate will not come off the connecting shaft 8.
[0049] In some embodiments, the hook of the electric chain hoist 7 can be directly hooked on the connecting shaft 8 of the two sling rings, that is, in the middle of the first sling ring 4, without using the second sling ring 6, but there will be a situation where the extended center line of the hook does not coincide with the center line of the roll 3, resulting in the roll 3 being skewed and interfering with the mill housing during hoisting. And Figure 1 in, the center line of the roll 3 coincides with the center lines of the two sling rings, making the hoisting more stable and safe.
[0050] In some embodiments, the roll changing device further includes a platform fillet 13, and the platform fillet 13 is arranged on one side of the motor mounting platform 2 close to the overhead crane hook 1.
[0051] Another aspect of the present invention provides a roll changing method, including:
[0052] Step S1: Connect the above roll changing device to the roll 3;
[0053] Step S2: First lift the roll 3 with the electric chain hoist 7;
[0054] Step S3: Then lift the roll 3 by the overhead crane hook 1 to complete the replacement of the roll 3.
[0055] In some embodiments, in combination with Figures 1-5 shown, step S1 of connecting the roll changing device to the roll 3 includes:
[0056] Step S11: Sleeve the first sling ring 4 and the second sling ring 6 on the connecting shaft 8, and fixedly connect the first ends of the first connecting plate 9 and the second connecting plate 10 on both sides of the connecting shaft 8;
[0057] Step S12: Connect the first end of the connecting rope 5 to the overhead crane hook 1, and connect the second end of the connecting rope 5 to the first sling ring 4;
[0058] Step S13: Connect the first end of the electric chain hoist 7 to the motor mounting platform 2, and connect the second end of the electric chain hoist 7 to the second lifting ring 6;
[0059] Step S14: Push the roll 3 to the hoisting position by using the vertical roll to press down. The roll 3 is provided with a hoisting hole on the flat head for installing the replacement device. Insert the roll 3 onto the pin 11 through the hoisting hole. Both ends of the pin 11 are respectively connected to the second ends of the first connecting plate and the second connecting plate, and are locked by the lock nut 12, which can realize the installation of the replacement device on the roll 3 quickly and safely.
[0060] Specifically, in some embodiments, in combination with Figure 3 As shown, the connecting rope 5 is made of steel wire rope. The first lifting ring 4 and the overhead crane hook 1 are connected by steel wire, and the steel wire rope is leaned against the platform fillet 13, so that the part of the steel wire rope between the platform fillet 13 and the overhead crane is perpendicular to the ground to prevent damage to the steel wire rope.
[0061] Specifically, in some embodiments, in combination with Figure 3 As shown, since the vertical mill motor reducer is installed on the vertical mill reducer motor mounting platform 2, the overhead crane hook 1 cannot directly hoist the roll 3. Therefore, an electric chain hoist 7 is installed below the vertical mill reducer motor mounting platform 2 directly above the hoisting position of the roll 3.
[0062] In some embodiments, in combination with Figure 4 As shown, when the electric chain hoist 7 hoists the roll 3, when the roll 3 is higher than the vertical mill housing and the connecting rope 5 is completely vertical without interfering with the surrounding equipment, the electric chain hoist 7 stops running.
[0063] In some embodiments, in combination with Figure 5 As shown, when the electric chain hoist 7 stops running, simultaneously raise the overhead crane hook 1 to tighten the connecting rope 5, and then lower the electric chain hoist 7 so that the roll 3 is completely supported by the overhead crane hook 1, and disconnect the connection between the electric chain hoist 7 and the second lifting ring 6, thereby realizing the hoisting out of the roll 3.
[0064] The steps for installing a new roll 3 are opposite to the steps for replacing and hoisting out the roll 3 above. The roll replacement device provided by this application can be extended to the replacement of the roll 3 of the same type of strip vertical roll mill.
[0065] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:
[0066] 1. With the structural feature of combining the overhead crane hook and the electric chain hoist in this application, the phenomenon of skewed pulling and unloading during the roll replacement process when only using the overhead crane for hoisting can be avoided, making the replacement process smoother and safer, and the structure is simple and easy to operate.
[0067] 2. In this application, by setting the lifting point of the electric chain hoist in the second lifting mechanism above the roll replacement position, the roll can be vertically lifted from within the vertical mill housing, ensuring smooth lifting, improving the roll replacement efficiency, avoiding damage to the roll caused by bumps during lifting, and guaranteeing the safety of the lifting process.
[0068] 3. Through the structural design of the pin and lock nut in this application, the roll can be safely and quickly installed. Moreover, through the structural design of the platform fillet, the risk of hoisting caused by the sharp edges of the wire rope being cut when connecting to the roll during the lifting process can be avoided, making it safer and more reliable.
[0069] 4. The roll replacement device provided by this application has a simple structure, small volume, convenient and fast installation and replacement process, and can be constructed by one person.
[0070] 5. The roll replacement device provided by this application requires a small storage space, has a low manufacturing cost, low post-maintenance cost with regular replacement, is not restricted by the height of the overhead crane, and is more widely and conveniently used.
[0071] In this application, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.
[0072] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation to this application.
[0073] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.
[0074] In this application, unless otherwise clearly defined or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0075] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of this application, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically limited.
[0076] In the description of this specification, descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0077] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0078] Although the embodiments of this application 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 principles and purposes of this application, and the scope of this application is defined by the claims and their equivalents.
Claims
1. A roll changing device, characterized in that, Comprising: A first lifting mechanism, the first end of the first lifting mechanism being connected to the crane hook; A second lifting mechanism, the first end of the second lifting mechanism being connected to the motor mounting platform of the speed reducer of the vertical rolling mill; A connecting mechanism, the second ends of the first lifting mechanism and the second lifting mechanism are both connected to the first end of the connecting structure, and the angle between the first lifting mechanism and the second lifting mechanism is adjustable, and the second end of the connecting mechanism is connected to the roll of the vertical rolling mill.
2. The roll changing device according to claim 1, characterized in that, The first lifting mechanism includes: A first sling, the first sling being connected to the first end of the connecting mechanism; A connecting rope, the first end of the connecting rope being connected to the hook of the crane, and the second end of the connecting rope being connected to the first sling.
3. The roll changing device according to claim 2, characterized in that, The second lifting mechanism includes: A second sling, the second sling being connected to the first end of the connecting mechanism; An electric chain hoist, the first end of the electric chain hoist being connected to the motor mounting platform, and the second end of the electric chain hoist being connected to the second sling.
4. The roll changing device according to claim 3, characterized in that, The connecting mechanism includes: A connecting shaft, the first sling and the second sling are both sleeved on the connecting shaft, and the first sling and the second sling can rotate around the connecting shaft; A first connecting plate and a second connecting plate, the first ends of the first connecting plate and the second connecting plate are respectively fixed on both sides of the connecting shaft; A locking part, the locking part is detachably fixed to the second ends of the first connecting plate and the second connecting plate.
5. The roll changing device according to claim 4, wherein: The locking part includes a pin and a lock nut.
6. The roll changing device according to claim 4, characterized in that, Further comprising: A platform fillet, the platform fillet being arranged on one side of the motor mounting platform close to the crane hook.
7. A roll replacement method, characterized in that, Comprising: Connecting the roll changing device according to claim 5 or 6 to the roll; First, use the electric chain hoist to lift the roll; Then, hoist the roll by the crane hook to complete the replacement of the roll.
8. The roll replacement method according to claim 7, characterized in that, Connecting the roll changing device to the roll includes: Sleeving the first sling and the second sling on the connecting shaft, and fixedly connecting the first ends of the first connecting plate and the second connecting plate on both sides of the connecting shaft; Connecting the first end of the connecting rope to the crane hook, and connecting the second end of the connecting rope to the first sling; Connecting the first end of the electric chain hoist to the motor mounting platform, and connecting the second end of the electric chain hoist to the second sling; Inserting the roll on the pin, the two ends of the pin are respectively connected to the second ends of the first connecting plate and the second connecting plate, and locked by a lock nut.
9. The roll changing method according to claim 7, wherein: When the electric chain hoist lifts the roll, when the roll is higher than the housing of the vertical rolling mill, the electric chain hoist stops running.
10. The roll changing method according to any one of claims 7-9, wherein: When the electric chain hoist stops running, raise the overhead crane hook at the same time to tighten the connecting rope, and then lower the electric chain hoist so that the weight of the roll is completely borne by the overhead crane hook, and disconnect the electric chain hoist from the second lifting ring, thereby realizing the lifting out of the roll.