Automatic unhooking hook head assembly for roll change of rolling mill
By designing the hook lift lever and head pressing mechanism, the automatic decoupling of the rolling mill hook head and the working roller is achieved, solving the problems of spring plate wear and fulcrum damage in the existing technology, improving the roll replacement speed and efficiency, and reducing the maintenance rate and Safety hazards.
Patent Information
- Application Number
- CN202420892214.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The spring plates of existing rolling mill hook head assembly are prone to wear and damage, resulting in mechanism failure, high failure rate, high maintenance cost, and safety hazards.
A rolling mill automatic roll change hook head assembly is designed, using hook lift lever and head pressing mechanism. Through the up and down displacement of the lever and the rotation of the flip rod, the hook head is driven to automatically decouple the working roller, avoiding springs. Direct stress and wear of the plate.
The automatic decoupling of the hook head and the working roller is realized without manual intervention, the roller replacement speed is fast and efficient, the lever mechanical mechanism is not easy to wear, the structure of each component is stable, and the maintenance rate is low, reducing safety hazards.
Smart Images
Figure CN222153382U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cold steel production rolling mills, in particular to an automatic unhooking hook assembly for roller changing of a rolling mill. Background Art
[0002] The rolling mill work roll changing platform is equipped with a side shift trolley and a work roll changing hydraulic cylinder on the operating side of each frame. The side shift platform cover is a welded structure. The side shift track is installed on the cover to guide the work roll and the hook of the roll changing hydraulic cylinder. In order to change rolls more quickly, two sets of tracks are installed on each cover. All the covers are installed side by side on the side shift frame. In this way, the worn work rolls and bearing seats can be dragged out of the frame through the first set of tracks, and the new rolls or ground work rolls can be placed on the second set of tracks. Through the action of the side shift cylinder, these tracks move toward the soaking furnace to the push roll position, where the new roll can be pushed into the frame. The automatic work roll changing device is widely used in the hot plate continuous casting and rolling process, and the hook assembly is installed on the head of the roll changing cylinder. The automatic push roll unhooking and pull roll unhooking are completely realized by mechanical transmission, and the pull roll unhooking mechanism is relatively complex, with a high failure rate and high maintenance cost.
[0003] In the prior art, the uncoupling of the pulling roller and the supporting roller is achieved by rotating the spring plate. The spring plate is assembled on the hook head, and the fulcrum is located in the middle position of the top of the hook head contour. After the spring plate is compressed, it rotates around the fulcrum to control the rotation of the hook head. During the mechanical movement, the spring plate is prone to wear; when the spring plate is released from the force, the rebound force is large, which often damages the fulcrum limit, causing the push-pull roller hook head assembly to fail, the failure rate is high, the maintenance cost is high, and there are safety hazards.
[0004] In view of this, it is necessary to propose an automatic unhooking hook assembly for rolling mill roll change to solve the above defects. Utility Model Content
[0005] The main purpose of the utility model is to provide a rolling mill roll changing automatic unhooking hook assembly, aiming to solve the problem that the spring plate of the existing hook assembly is easy to wear and the spring plate support point is easy to be damaged, resulting in mechanism failure.
[0006] To achieve the above-mentioned purpose, the utility model provides an automatic uncoupling hook head assembly for rolling mill roll changing, comprising a hook head, a hook head seat, a hook lifting lever, a roll changing cylinder and a working roll mop, the roll changing cylinder is fixedly connected to the end of the hook head seat, the hook head is rotatably installed on the hook head seat, the head of the hook head hooks the working roll mop, a flip rod is installed on the hook head, the hook lifting lever comprises a lever rotatably connected to the hook head seat, a pressure head mechanism installed at one end of the lever and a fixed pressure plate installed directly above the pressure head mechanism, the other end of the lever is located below the flip rod, the lever rotates under the control of the pressure head mechanism and drives the flip rod to rotate, thereby driving the hook head to rotate an angle to unhook from the working roll mop.
[0007] Preferably, a mounting plate is provided at the end of the lever, and the pressure head mechanism includes a slider, a telescopic member, a roller and a threaded guide rod, the slider passes through the telescopic member and is inserted into the lever, the roller is rotatably mounted on the slider, the roller is in contact with the bottom surface of the fixed pressure plate, the rotation direction of the roller is tangent to the movement direction of the roller changing cylinder, and the threaded guide rod passes through the mounting plate from the bottom of the mounting plate and is connected to the slider through threads.
[0008] Preferably, the telescopic member is a spring.
[0009] Preferably, the threaded guide rod is a screw rod with a thread turned on one end.
[0010] Preferably, the slider includes a head and a sliding part, the sliding part passes through the telescopic member and is inserted into the mounting plate, and the threaded guide rod passes through the mounting plate from the bottom of the mounting plate and is connected to the head.
[0011] Preferably, the fixed pressing plate comprises a horizontally arranged pressing hook surface and an inclined guiding surface arranged at the bottom thereof, and under the pulling of the roller changing cylinder, the pressing head mechanism enters the pressing hook surface from the guiding surface.
[0012] Preferably, a notch with an arc-shaped working surface is formed at one end of the lever close to the flip rod, and the working surface matches the outer contour of the flip rod and contacts the outer contour of the flip rod.
[0013] Preferably, the hook head is rotatably connected to the hook head seat via a pin.
[0014] Preferably, the lever is rotatably connected to the hook head seat via a pin.
[0015] Compared with the prior art, the automatic unhooking hook assembly for rolling mill roll change provided by the utility model has the following beneficial effects:
[0016] The utility model provides an automatic uncoupling hook head assembly for rolling mill roll changing to control the uncoupling of the hook head through a hook lifting lever, and the pressure head mechanism of the hook lifting lever can produce up and down displacement, so that the lever rotates under the control of the pressure head mechanism and drives the flip rod to rotate, thereby driving the hook head to rotate an angle to uncouple from the working roll, thereby realizing automatic uncoupling of the hook head and the working roll mop, without the need for manual intervention, with fast roll changing speed and high efficiency, the lever mechanical mechanism is not easy to wear, the structural movement between the components is stable, and the maintenance rate is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0018] Figure 1 A schematic diagram of the structure of the automatic unhooking hook assembly for rolling mill roll change provided by the utility model;
[0019] Figure 2 for Figure 1 The schematic diagram of the structure of the automatic unhooking hook assembly for rolling mill roll change is shown;
[0020] Figure 3 for Figure 2 The structural diagram of the hook lifting lever is shown in FIG.
[0021] Figure 4 for Figure 2 The schematic diagram of the movement of the hook lifting lever is shown;
[0022] Figure 5 for Figure 4 The structural diagram of the slider is shown.
[0023] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0024] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0027] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0028] Please refer to Figure 1 and Figure 2The utility model provides an automatic unhooking hook assembly for roller changing of a rolling mill. The rolling mill roll changing automatic uncoupling hook head assembly includes a hook head 1, a hook head seat 3, a hook lifting lever 5, a roll changing cylinder 7 and a working roll mop 9, wherein the roll changing cylinder 7 is fixedly connected to the end of the hook head seat 3 and is used to drive the hook head seat 3 to move along the track, the hook head 1 is rotatably installed on the hook head seat 3, the head of the hook head 1 hooks the working roll mop 9 for replacing the working roll 10, and a flip rod 11 is installed on the hook head 1, and the hook lifting lever 5 includes a lever 51 rotatably connected to the outer surface of the hook head seat 3, a pressure head mechanism 53 installed at one end of the lever 51, and a fixed pressing plate 55 installed directly above the pressure head mechanism 53, the other end of the lever 51 is located below the flip rod 11 and is used to lift the hook head 1 during the rotation process, and the pressure head mechanism 53 can produce up and down displacement, so that the lever 51 rotates under the control of the pressure head mechanism 53 and drives the flip rod 11 to rotate, thereby driving the hook head 1 to rotate an angle to unhook from the working roll 10. After the roller change is completed, the hook head 1 and the working roller mop 9 are in a hooked horizontal state, the pressure head mechanism 53 is pressed under the fixed pressure plate 55, and the lever cannot rotate under the action of the hook head 1, and then the hook head seat 3 is pushed by the roller change cylinder 7 to move a certain distance in the direction of the working roller 10 so that the hook head 1 and the working roller mop 9 are separated. When the hook head 1 is released, the pressure head mechanism 53 rotates, and the end of the lever close to the head of the hook head 1 is tilted upward, prompting the flip rod 11 to drive the hook head 1 and rotate the angle to realize the automatic decoupling of the hook head 1 and the working roller mop, without manual intervention, the roller change speed is fast and the efficiency is high, the lever mechanical mechanism is not easy to wear, the structural movement between the components is stable, and the maintenance rate is low.
[0029] like Figure 3 and Figure 4 As shown, a mounting plate 511 is provided at the end of the lever 51, and a square hole is provided on the mounting plate 511. The pressure head mechanism 53 includes a slider 531, a telescopic member 533, a roller 535 and a threaded guide rod 537. The slider 531 passes through the telescopic member 533 and is inserted into the lever. The roller 535 is rotatably mounted on the slider 531. The roller 535 contacts the bottom surface of the fixed pressure plate 55, and the rotation direction of the roller 535 is tangent to the movement direction of the roller-changing cylinder. The threaded guide rod 537 passes through the mounting plate 511 from the bottom of the mounting plate 511 and is connected to the slider 531 by threads. The roller 535 is connected to the lower surface of the fixed pressure plate 55 in a rolling manner. As the roller-changing cylinder 7 pushes and pulls, the wear between the pressure head mechanism 53 and the fixed pressure plate 55 is reduced. The slider 531 does not rotate when it moves up and down, and the movement is flexible and stable.
[0030] Specifically, in this embodiment, the telescopic member 533 is a spring. The spring has a rebound force under compression, and the hook-lifting lever 5 rebounds when the pressure of the fixed pressure plate 55 is released, thereby causing the hook-lifting lever 5 to rotate.
[0031] Furthermore, the threaded guide rod 537 is a screw rod with a threaded end. The end of the threaded guide rod 537 with a thread is threadedly connected to the slider 531, and the end of the screw rod without a thread is a plain rod, and the end without a thread forms a sliding connection with the mounting plate to guide it. Under the action of the fixed pressure plate 55, the screw rod and the slider 531 move up and down at the same time.
[0032] like Figure 5 As shown, further, the slider 531 includes a head 5311 and a sliding portion 5313, the sliding portion 5313 passes through the telescopic member 533 and is inserted into the mounting plate 511, and the threaded guide rod 537 passes through the mounting plate from the bottom of the mounting plate and is connected to the head 5311.
[0033] The fixed pressing plate 55 includes a horizontally arranged hook pressing surface 551 and an inclinedly arranged guide surface 553 at the bottom thereof. Under the pulling of the roll changing oil cylinder 7, the pressing head mechanism 53 enters the hook pressing surface from the guide surface 553. After the pressing head mechanism 53 enters the horizontal hook pressing surface 551, it is pressed by the fixed pressing plate 55. After the roll changing is completed, the roll changing oil cylinder 7 extends about 30 mm toward the working roll mop 9. At this time, the hook head 1 and the working roll mop 9 are separated. While the pressing head mechanism 53 is pressed by the fixed pressing plate 55, the spring rebound force causes the pressing head mechanism 53 to move downward, driving one end of the lever to rotate, and the other end lifts the flip rod 11, prompting the hook head 1 to flip and lift up, and then the oil cylinder continues to work to pull the hook head 1 out to achieve automatic unhooking of the roll changing.
[0034] like Figure 4 As shown, a clearance notch 510 with an arc-shaped working surface is provided at one end of the lever 51 close to the flip rod 11, and the working surface matches and contacts the outer contour of the flip rod 11. The provision of the clearance notch 510 is conducive to the cooperation between the lever and the flip rod 11, so that the flip rod 11 can be smoothly driven to rotate during the lever flipping process.
[0035] In this embodiment, the hook head 1 is rotatably connected to the hook head seat 3 via a pin. Driven by the lever, the hook head 1 rotates around the pin to form a flip angle.
[0036] In this embodiment, the lever 51 is rotatably connected to the hook seat 3 via a pin. The lever rotates around the pin under the linkage of the pressing head mechanism 53.
[0037] The utility model provides an automatic uncoupling hook head 1 assembly for rolling mill roll changing to control the uncoupling of the hook head 1 through a hook lifting lever 5, and the pressure head mechanism 53 of the hook lifting lever 5 can produce an up and down displacement, so that the lever rotates under the control of the pressure head mechanism 53 and drives the flip rod 11 to rotate, thereby driving the hook head 1 to rotate an angle to uncouple from the working roll mop, thereby realizing automatic uncoupling of the hook head 1 and the working roll mop 9, without the need for manual intervention, with fast roll changing speed and high efficiency, the lever mechanical mechanism is not easy to wear, the structural movement between the components is stable, and the maintenance rate is low.
[0038] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An automatic unhooking hook assembly for rolling mill roll change, characterized in that: It includes a hook head, a hook head seat, a hook lifting lever, a roll changing cylinder and a working roll mop, the roll changing cylinder is fixedly connected to the end of the hook head seat, the hook head is rotatably installed on the hook head seat, the head of the hook head hooks the working roll mop, a flip rod is installed on the hook head, the hook lifting lever includes a lever rotatably connected to the hook head seat, a pressure head mechanism installed at one end of the lever and a fixed pressing plate installed directly above the pressure head mechanism, the other end of the lever is located below the flip rod, the lever rotates under the control of the pressure head mechanism and drives the flip rod to rotate, thereby driving the hook head to rotate an angle to disengage from the working roll mop.
2. The automatic unhooking hook assembly for rolling mill roll change according to claim 1 is characterized in that: A mounting plate is provided at the end of the lever, and the pressure head mechanism includes a slider, a telescopic member, a roller and a threaded guide rod. The slider passes through the telescopic member and is inserted into the lever. The roller is rotatably mounted on the slider, and the roller contacts the bottom surface of the fixed pressure plate. The rotation direction of the roller is tangent to the movement direction of the roller-changing cylinder. The threaded guide rod passes through the mounting plate from the bottom of the mounting plate and is connected to the slider through threads.
3. The automatic unhooking hook assembly for rolling mill roll change according to claim 2 is characterized in that: The telescopic member is a spring.
4. The automatic unhooking hook assembly for rolling mill roll change according to claim 2 is characterized in that: The threaded guide rod is a screw rod with a thread turned on one end.
5. The automatic unhooking hook assembly for rolling mill roll change according to claim 2 is characterized in that: The sliding block comprises a head and a sliding part, the sliding part passes through the telescopic member and is inserted into the mounting plate, and the threaded guide rod passes through the mounting plate from the bottom of the mounting plate and is connected to the head.
6. The automatic unhooking hook assembly for rolling mill roll change according to claim 1 is characterized in that: The fixed pressing plate comprises a horizontally arranged pressing hook surface and an inclinedly arranged guiding surface arranged at the bottom thereof. Under the pulling of the roller changing cylinder, the pressing head mechanism enters the pressing hook surface from the guiding surface.
7. The automatic unhooking hook assembly for rolling mill roll change according to claim 1 is characterized in that: The end of the lever close to the flip rod is provided with a paving notch with a curved working surface, the working surface matches the outer contour of the flip rod, and the working surface contacts the outer contour of the flip rod.
8. The automatic unhooking hook assembly for rolling mill roll change according to claim 1 is characterized in that: The hook head is rotatably connected to the hook head seat through a pin shaft.
9. The automatic unhooking hook assembly for rolling mill roll change according to claim 1 is characterized in that: The lever is rotatably connected to the hook head seat through a pin shaft.