Heavy special-shaped blank tilting gear and tilting method

Abstract

The invention discloses a heavy special-shaped blank tilting gear and a tilting method, and belongs to the technical field of hot rolling production lines. The heavy special-shaped blank tilting gear comprises a hydraulic cylinder support and a hydraulic cylinder rotationally connected in the hydraulic cylinder support, and further comprises a guide support, a swing mechanism rotationally connected with a telescopic rod of the hydraulic cylinder and a turnover hook rotationally connected with the swing mechanism, and the working end of the turnover hook comprises a hook head and a hook back; the front end face of the guide support is a guide track. When the heavy special-shaped blank tilts steel, the swing mechanism drives the hook back to ascend along the guide track, the hook head hooks the heavy special-shaped blank to perform in-situ steel tilting, transverse movement is not needed, the end face of the horizontal special-shaped blank is directly overturned to the section of the vertical special-shaped blank, and then the effect of meeting the requirement for rolling the special section of the heavy special-shaped blank is achieved. The technical problem that in the prior art, a tilting gear without a manipulator for clamping and correcting is applied to separate actions of tilting, transverse moving and overturning of heavy special-shaped blanks, and consequently a rolling center line deviates is solved.

Description

Technical Field

[0001] The invention relates to the technical field of hot rolling production lines, and more specifically to a heavy-duty profiled blank steel turning machine and a steel turning method. Background Art

[0002] In the existing heavy H-beam hot rolling production line, the furnace roller conveys the billet heated by the heating furnace to the rough rolling mill. According to the requirements of the steel rolling process, some products have special requirements for the cross-sectional shape of the billet. The billet size is not a regular rectangular billet, but a special-shaped billet. These special-shaped billets need to be turned over before entering the rough rolling mill.

[0003] In traditional steel turning machines, the turning of steel billets generally adopts two sets of hydraulic drives. The turning action is completed by the cooperation of two hydraulic cylinders (transverse hydraulic cylinder and turning hydraulic cylinder) in succession. That is, the transverse hydraulic cylinder acts first to push the steel billet transversely to make it deviate from the rolling center line, and then the turning hydraulic cylinder acts to turn the steel billet so that it is exactly aligned with the rolling center line.

[0004] After the heavy-duty special-shaped blank is flipped, it needs to be clamped and corrected by a push bed (the straightness of the heavy-duty special-shaped blank will be deformed after passing through the heating furnace, affecting rolling) in order to align it with the rolling center line. Therefore, the traditional steel flipping machine without a push bed clamping and correction cannot be used in this production line. Summary of the invention

[0005] 1. Technical problem to be solved by the invention

[0006] In view of the problem that the separate lateral movement and flipping actions of the existing steel flipping machine without a push bed for clamping and correction are applied to the steel flipping of heavy-duty special-shaped billets, which leads to the deviation of the rolling center line, the present invention provides a heavy-duty special-shaped billet steel flipping machine and a steel flipping method, in which the flipping hook is synchronously driven to rise along the designed guide track by a rotary mechanism, and the hook head hooks up the heavy-duty special-shaped billet to flip the billet in situ without lateral movement, so that the end face of the horizontal special-shaped billet is flipped in situ into the vertical special-shaped billet section, thereby achieving the purpose of meeting the special section rolling requirements of the heavy-duty special-shaped billet.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the technical solution provided by the present invention is:

[0009] A heavy-duty special-shaped blank steel turning machine comprises a hydraulic cylinder support and a hydraulic cylinder rotatably connected to the hydraulic cylinder support, and also comprises a slewing mechanism rotatably connected to the telescopic rod of the hydraulic cylinder, a turning hook rotatably connected to the slewing mechanism, the working end of the turning hook comprises a hook head and a hook back; and a guide support, the front end face of the guide support is a guide track; when the heavy-duty special-shaped blank is turned over, the slewing mechanism drives the hook back to rise along the guide track, and the hook head hooks up the heavy-duty special-shaped blank to turn over the steel in situ without lateral movement, so that the end face of the horizontal special-shaped blank can be directly turned in situ into the vertical special-shaped blank section, thereby achieving the effect of meeting the special section rolling requirements of the heavy-duty special-shaped blank.

[0010] A further technical solution is that the guide trajectory is consistent with the in-situ steel turning arc after the hook head hooks up the heavy special-shaped billet, so as to achieve the purpose of in-situ steel turning and avoid the deviation of the rolling center line.

[0011] A further technical solution is that the rotating mechanism includes a downward crank, an upward crank, a bearing seat and a rotating shaft; the rotating shaft is rotatably connected to the bearing seat, and the fixed ends of the downward crank and the upward crank are both fixed on the rotating shaft in a sleeve-type manner; the other end of the downward crank is rotatably connected to the telescopic rod of the hydraulic cylinder, and the other end of the upward crank is rotatably connected to the tail end of the flip hook; only one set of hydraulic cylinders is used to drive the downward crank, so that the rotating shaft with the fixed bearing seat drives the upward crank to rotate synchronously, thereby achieving the purpose of flipping in situ without lateral movement.

[0012] A further technical solution is that the axes of the downward crank and the upward crank are at skew linear angles, one side is for driving action and the other side is for flipping action, and they run synchronously to avoid interference between the two actions.

[0013] A further technical solution is that the angle between the skew lines is 90°, so that the driving and flipping actions are as far apart as possible while achieving the purpose of flipping; the hydraulic cylinder is an intermediate trunnion type hydraulic cylinder, and is rotatably connected to the hydraulic cylinder support through its trunnion.

[0014] According to a further technical solution, the hook back protrudes from the hook body of the flip hook to avoid interference between the hook body and the guide track.

[0015] According to a further technical solution, a wear-resistant mechanism is connected to the hook back to increase the service life of the flip hook.

[0016] A further technical solution is that the wear-resistant mechanism is a roller hinged to the hook back, which converts sliding into rolling to effectively reduce the wear between the hook back and the guide track.

[0017] A further technical solution is that the upward crank and the turning hook are one-to-one corresponding and arranged side by side. The number of uses is adjusted accordingly according to the length of the heavy-duty special-shaped blank. Each turning hook evenly distributes the weight of the heavy-duty special-shaped blank and improves the synchronous stability and consistency of the steel turning action. There are also multiple bearing seats arranged side by side to avoid compression deformation of the slewing bearing.

[0018] A method for turning steel of the above-mentioned heavy-duty special-shaped blank turning machine, wherein a hydraulic cylinder drives a downward turning crank, and the downward turning crank, a rotating shaft and an upward turning crank rotate synchronously. During the process in which the upward turning crank drives the turning hook to move upward along a guide track, the hook head hooks up the horizontal heavy-duty special-shaped blank section and turns it 90° to present a vertical heavy-duty special-shaped blank section.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0021] The heavy-duty profiled blank steel turning machine and steel turning method of the present invention, by reasonably designing the shape of the turning hook and utilizing the deadweight of the turning hook, always keep the back of the steel turning hook close to the guide track of the front end face of the guide support, use only one set of hydraulic cylinders to drive the downward turning crank, so that the rotating shaft with a fixed bearing seat drives the upward turning crank to rotate, thereby making the turning hook move along the guide track, so that the end face of the horizontal profiled blank is turned 90 degrees, presenting the cross-section of the vertical profiled blank, thereby meeting the rolling requirements of the special cross-section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a heavy-duty profiled blank turning machine according to a specific embodiment;

[0023] Figure 2 It is a three-dimensional diagram of a heavy-duty profiled blank turning machine according to a specific embodiment;

[0024] Figure 3 It is a schematic diagram of the steel turning action of the heavy-duty profiled blank steel turning machine according to a specific embodiment;

[0025] Figure 4 It is a schematic diagram of the steel turning process of a heavy-duty special-shaped blank steel turning machine in a specific embodiment.

[0026] In the figure: 1. hydraulic cylinder; 2. hydraulic cylinder support; 3. downward crank; 4. rotating mechanism; 5. upward crank; 6. wear-resistant mechanism; 7. flip hook; 8. guide support; 9. heavy-duty special-shaped blank; 11. ear shaft; 41. bearing seat; 42. rotating shaft; 71. hook head; 72. hook back; 73. hook back; 81. guide track; 91. steel flipping arc. DETAILED DESCRIPTION

[0027] In order to further understand the content of the present invention, the invention is described in detail with reference to the accompanying drawings.

[0028] Example 1

[0029] The heavy-duty profiled blank turning machine of the present embodiment is as follows: Figure 1As shown, it includes a hydraulic cylinder support 2 and a hydraulic cylinder 1 rotatably connected to the hydraulic cylinder support 2, and also includes: a slewing mechanism 4 rotatably connected to the telescopic rod of the hydraulic cylinder 1, a flip hook 7 rotatably connected to the slewing mechanism 4, the working end of the flip hook 7 includes a hook head 71 and a hook back 72; and a guide support 8, the front end surface of the guide support 8 is a guide track 81. Each rotation connection can be realized by hinge.

[0030] In the heavy-duty profiled blank turning machine of the present embodiment, when the heavy-duty profiled blank 9 is turned over, the rotary mechanism 4 drives the hook back 72 to rise along the guide track 81, and the hook head 71 hooks the heavy-duty profiled blank 9 to turn over in situ without lateral movement, so that the end face of the horizontal profiled blank can be directly turned over in situ to form a vertical profiled blank section, thereby achieving the effect of meeting the special section rolling requirements of the heavy-duty profiled blank.

[0031] Example 2

[0032] The heavy-duty profiled blank turning machine of this embodiment has the same basic structure as that of the first embodiment, except that: Figure 3 As shown, the guide track 81 is consistent with the steel turning arc 91 after the hook head 71 hooks up the heavy-duty special-shaped blank 9, so as to achieve the purpose of in-situ steel turning and avoid the deviation of the rolling center line.

[0033] like Figure 1 , 2 As shown, the slewing mechanism 4 includes a down-turning crank 3, an up-turning crank 5, a bearing seat 41 and a slewing shaft 42; the slewing shaft 42 is rotatably connected to the bearing seat 41, and the fixed ends of the down-turning crank 3 and the up-turning crank 5 are both sleeve-fixed on the slewing shaft 42; the other end of the down-turning crank 3 is rotatably connected to the telescopic rod of the hydraulic cylinder 1, and the other end of the up-turning crank 5 is rotatably connected to the tail end of the flip hook 7; only one set of hydraulic cylinders 1 is used to drive the down-turning crank 3, so that the slewing shaft 42 with the fixed bearing seat 41 drives the up-turning crank 5 to rotate synchronously, thereby achieving the purpose of flipping in place without lateral movement. Each rotation connection can be achieved by hinges.

[0034] The axes of the down-turning crank 3 and the up-turning crank 5 are at an angle to each other, one side is for driving action and the other side is for turning action, and they run synchronously to avoid interference between the two actions. The angle of the skew lines is preferably 90°, so that the driving and turning actions are as far apart as possible while achieving the purpose of turning; the hydraulic cylinder 1 is an intermediate trunnion type hydraulic cylinder, and is rotatably connected to the hydraulic cylinder support 2 through its trunnion 11.

[0035] The hook back 72 preferably protrudes from the hook body 73 of the flip hook 7 to avoid interference between the hook body 73 and the guide track 81 when turning the steel. At the same time, the front end arc surface of the guide support 8 where the guide track 81 is located is an inner concave arc surface, and the arc top protrudes to the right from the arc bottom. The guide track 81 is adapted to the motion trajectory of the flip crank 5 to avoid the heavy-duty special-shaped blank 9 being pushed forward and shifted when flipping in situ during the process of hooking the blank surface by the hook head 71, resulting in the deviation of the rolling center line. The hook back 72 is connected to a wear-resistant mechanism 6, which can be a wear-resistant plate, and the wear-resistant plate is close to the guide track 81 to increase the service life of the flip hook 7.

[0036] The wear-resistant mechanism 6 is preferably hinged to a roller of the hook back 72 , and the roller rolls on the guide track 81 to convert sliding friction into rolling friction, so as to effectively reduce the wear between the hook back 72 and the guide track 81 .

[0037] The upward crank 5 and the turning hook 7 are one-to-one corresponding and arranged side by side. The number of uses is adjusted accordingly according to the length of the heavy-duty special-shaped blank 9. Each turning hook 7 evenly distributes the weight of the heavy-duty special-shaped blank 9 and improves the synchronous stability and consistency of the steel turning action. The bearing seats 41 are also arranged side by side to prevent the rotating shaft 42 from being deformed under pressure.

[0038] In the steel turning method of the heavy-duty profiled blank steel turning machine of the present embodiment, the hydraulic cylinder 1 drives the downward turning crank 3, and the downward turning crank 3, the rotary shaft 42 and the upward turning crank 5 rotate synchronously. During the process that the upward turning crank 5 drives the turning hook 7 to move upward along the guide track 81, the hook head 71 hooks the cross-section of the horizontal heavy-duty profiled blank 9 and turns it to 90°, presenting the cross-section of the vertical heavy-duty profiled blank 9.

[0039] Example 3

[0040] The heavy-duty profiled blank steel turning machine and steel turning method of this embodiment have the same basic structure and steps as those of embodiment 2, except that: when the horizontal heavy-duty profiled blank 9 comes out of the heating furnace, it is transported to the transport roller in front of the rolling mill through the furnace discharge roller, and the roller stops running; Figure 4 As shown in ①-⑥, the hydraulic cylinder 1 of the steel turning machine starts to drive the downward turning crank 3 to extend forward upon receiving the command, so that the rotary shaft 42 with the fixed bearing seat 41 drives the upward turning crank 5 to rotate, thereby causing the turning hook 7 to move. Due to its own weight, the back of the turning hook 7 always moves along the guide track 81 of the end face of the guide support 8, so that the end face of the horizontal special-shaped blank is turned in situ to 90°, presenting the cross-section of a vertical special-shaped blank.

[0041] The heavy-duty profiled blank steel turning machine and steel turning method of the present embodiment, by reasonably designing the shape of the turning hook 7 and utilizing the self-weight of the turning hook 7, always keeps the back 72 of the steel turning hook close to the guide track 81 of the front end face of the guide support, and only uses one set of hydraulic cylinders 1 to drive the downward turning crank 3, so that the rotating shaft 42 with a fixed bearing seat drives the upward turning crank 5 to rotate, thereby causing the turning hook 7 to move upward along the guide track 81, so that the end face of the horizontal profiled blank is turned 90° to present a vertical profiled blank cross-section, thereby meeting the rolling requirements of the special cross-section; after the steel turning is completed, the hydraulic cylinder 1 drives the downward turning crank 3 to pull back, and the turning hook 7 falls to the lowest position of the guide track 81 due to its own weight, and receives the next heavy-duty profiled blank 9.

[0042] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure and manufacturing steps are not limited thereto. Therefore, if a person skilled in the art is inspired by it and, without departing from the purpose of the invention, designs a structure and an implementation method similar to the technical solution without creativity, they shall all fall within the protection scope of the present invention.

Claims

1. A heavy-duty profiled blank turning machine, comprising a hydraulic cylinder support (2) and a hydraulic cylinder (1) rotatably connected to the hydraulic cylinder support (2), characterized in that: Also includes: A slewing mechanism (4) rotatably connected to the telescopic rod of the hydraulic cylinder (1); A flip hook (7) rotatably connected to the rotary mechanism (4), wherein the working end of the flip hook (7) comprises a hook head (71) and a hook back (72); and A guide support (8), wherein the front end surface of the guide support (8) is a guide track (81); When the heavy-duty shaped blank (9) is turned over, the rotary mechanism (4) drives the hook back (72) to rise along the guide track (81), and the hook head (71) hooks up the heavy-duty shaped blank (9) to turn over the steel in situ.

2. The heavy-duty profiled blank turning machine according to claim 1 is characterized in that: The guide track (81) is consistent with the steel turning arc (91) after the hook head (71) hooks up the heavy-duty special-shaped blank (9).

3. The heavy-duty profiled blank turning machine according to claim 1 is characterized in that: The rotary mechanism (4) comprises a downward crank (3), an upward crank (5), a bearing seat (41) and a rotary shaft (42); the rotary shaft (42) is rotatably connected to the bearing seat (41), and the fixed ends of the downward crank (3) and the upward crank (5) are both sleeve-fixed on the rotary shaft (42); the other end of the downward crank (3) is rotatably connected to the telescopic rod of the hydraulic cylinder (1), and the other end of the upward crank (5) is rotatably connected to the tail end of the flip hook (7).

4. The heavy-duty profiled blank turning machine according to claim 3 is characterized in that: The axes of the downward crank (3) and the upward crank (5) are at skew linear angles.

5. The heavy-duty profiled blank turning machine according to claim 4 is characterized in that: The angle between the non-planar straight lines is 90°; the hydraulic cylinder (1) is an intermediate trunnion type hydraulic cylinder and is rotatably connected to the hydraulic cylinder support (2) via its trunnion (11).

6. The heavy-duty profiled blank turning machine according to claim 4 is characterized in that: The hook back (72) protrudes from the hook body (73) of the flip hook (7).

7. The heavy-duty profiled blank turning machine according to claim 4 is characterized in that: The hook back (72) is connected to a wear-resistant mechanism (6).

8. The heavy-duty profiled blank turning machine according to claim 7, characterized in that: The wear-resistant mechanism (6) is a roller hinged to the hook back (72).

9. The heavy-duty profiled blank turning machine according to claim 7, characterized in that: The upward crank (5) and the turning hook (7) are in one-to-one correspondence and arranged side by side in a plurality; the bearing seats (41) are also in a plurality and arranged side by side.

10. A method for turning a heavy-duty profiled blank by a steel turning machine according to any one of claims 3 to 9, characterized in that: The hydraulic cylinder (1) drives the downward turning crank (3), and the downward turning crank (3), the rotary shaft (42) and the upward turning crank (5) rotate synchronously. During the upward turning crank (5) drives the turning hook (7) to move upward along the guide track (81), the hook head (71) hooks the cross section of the horizontal heavy-duty shaped blank (9) and turns it to 90 degrees, so that the cross section of the vertical heavy-duty shaped blank (9) is presented.

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