Guard plate protection device for top steel during heavy rail steel rolling

Abstract

The utility model belongs to the technical field of heavy rail steel rolling, particularly relates to a guard plate protection device for jacking steel during heavy rail steel rolling, and aims to solve the problem that the head of a rolled piece is warped downwards to possibly break the front tip of a guard plate and cause steel scrap rolling in the background technology. A first hydraulic push rod is fixedly connected to the inner wall of the top of the guide seat, and a piston rod of the first hydraulic push rod is fixedly connected with a guide sliding table. On the basis of an original guard plate, the overall thickness of the three-hole guard plate is reduced, a rolled piece is prevented from making contact with the front tip portion of the guard plate after tapping, smooth production is facilitated, and the problem that the rolled piece abuts against steel during tapping of a groove type rail is solved. Under the condition that rolling is not affected, the problem of steel jacking of a rolled piece generated when the rolled piece comes out of a rolling mill can be effectively relieved and solved, and therefore rolling waste steel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy rail rolling, in particular to a guard plate protection device for top steel of heavy rail rolling. Background Art

[0002] Heavy rail steel refers to the steel type with a nominal weight greater than or equal to 30kg / m. Heavy rails must withstand the pressure, impact load and friction of locomotives and vehicles during operation, so they are required to have sufficient strength, hardness and a certain toughness. In order to meet the needs of heavy loads and high speeds on railways, in addition to increasing the unit weight of heavy rails, the comprehensive performance must also be improved. Higher strength, toughness, wear resistance, crush resistance and brittle fracture resistance are required.

[0003] At present, in the rolling process of heavy rails and profiles, due to the asymmetry of the cross-section of the rolled piece (especially heavy rail products), the reduction of each part is inconsistent, resulting in the rolled piece warping when it leaves the hole. The head of the rolled piece warping is likely to break the front tip of the guard plate, resulting in rolled scrap.

[0004] In addition, the overall thickness of the lower guard plate at the exit of the original grooved rail rolling mill was relatively high, which was prone to steel-pushing accidents, seriously affecting the smooth production of the grooved rails. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a guard plate protection device for the top steel of heavy rail rolling, which overcomes the deficiencies of the prior art and effectively solves the problem that the head of the rolled piece may be tilted downward and the front tip of the guard plate may be broken, resulting in rolled scrap steel.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A guard plate protection device for the top steel of heavy rail rolling, comprising a base, a guide seat is arranged above the base, and a hydraulic push rod is fixedly connected to the inner wall of the top of the guide seat, the piston rod of the hydraulic push rod is fixedly connected to the guide slide, and the top of the outer wall of one end of the guide slide is fixedly connected to the guard plate;

[0008] The outer wall at one end of the guard plate is provided with a front tip portion, and the outer wall at the top of the guard plate is provided with a curved lead-out portion.

[0009] Preferably, adjustment holes are provided on the outer walls on both sides of the guard plate.

[0010] Preferably, a steel rolling chamber is installed on the outer wall of the top of the base, and symmetrically distributed support frames are welded to the outer wall on one side of the steel rolling chamber, and the guide seat is rotatably connected between the two support frames.

[0011] Preferably, a hydraulic push rod 2 is hinged between the guide seat and the rolling chamber.

[0012] Preferably, a side seat is provided on the top outer wall of the base, and a servo motor is fixedly connected to the top outer wall of the side seat, and the output shaft of the servo motor is fixedly connected to a rolling roller through a coupling, and rolled steel is wound on the outer wall of the rolling roller.

[0013] Preferably, symmetrically distributed vertical frames are welded to the top outer wall of the base, and the top of the inner wall of the vertical frame is rotatably connected to a guide rod, and a hydraulic push rod three is hinged between the guide rod and the side seat.

[0014] Preferably, a pressure plate is welded to the outer wall of one side of the guide rod, and a guide roller is rotatably connected to the bottom of the outer wall of one end of the pressure plate, and the guide roller is tightly attached to the outer wall of the rolled steel.

[0015] The beneficial effects of the utility model are:

[0016] 1. The guard plate protection device for the top steel of heavy rail rolling steel designed in this design reduces the overall thickness of the three-hole guard plate on the basis of the original guard plate, so that the rolled piece can avoid contact with the front tip of the guard plate after the steel is discharged, which is convenient for smooth production and helps to improve the problem of rolled piece top steel caused by the steel discharge of grooved rails;

[0017] 2. The guard plate protection device for the top steel of the heavy rail rolled steel designed in this invention is provided with a front tip and an arc-shaped lead-out part matching the rolled steel. It can effectively reduce and solve the problem of the top steel of the rolled steel when the rolled steel leaves the rolling mill without affecting the rolling, thereby reducing the rolled scrap steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of the overall structure of a guard plate protection device for the top steel of heavy rail rolling proposed by the utility model Figure 1 ;

[0019] Figure 2 A three-dimensional schematic diagram of the overall structure of a guard plate protection device for the top steel of heavy rail rolling proposed by the utility model Figure 2 ;

[0020] Figure 3 This is a three-dimensional bottom view of the overall structure of a guard plate protection device for the top steel of heavy rail rolling proposed by the utility model;

[0021] Figure 4 The utility model provides a schematic diagram of the guard plate structure of a guard plate protection device for the top steel of heavy rail rolling.

[0022] In the figure: 1. base; 2. guide seat; 3. hydraulic push rod 1; 4. guide slide; 5. guard plate; 6. front tip; 7. arc lead-out part; 8. adjustment hole; 9. rolling room; 10. support frame; 11. hydraulic push rod 2; 12. side seat; 13. servo motor; 14. rolling roller; 15. vertical frame; 16. guide rod; 17. hydraulic push rod 3; 18. pressure plate; 19. guide roller. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Embodiment 1, refer to Figure 1-4 A guard plate protection device for the top steel of heavy rail rolling includes a base 1, a guide seat 2 is arranged above the base 1, and a hydraulic push rod 3 is fixedly connected to the inner wall of the top of the guide seat 2, the piston rod of the hydraulic push rod 3 is fixedly connected to the guide slide 4, and a guard plate 5 is fixedly connected to the top of the outer wall of one end of the guide slide 4.

[0025] In this embodiment, on the basis of the original guard plate 5, the overall thickness of the three-hole guard plate is reduced, so that the rolled piece is prevented from contacting the front tip 6 of the guard plate 5 after being discharged, which is convenient for smooth production and is beneficial to improving the problem of rolled piece top steel caused by the discharge of grooved rails.

[0026] Example 2, refer to Figure 4 A guard plate protection device for the top steel of heavy rail rolling, a front tip 6 is arranged on the outer wall of one end of the guard plate 5, and a curved lead-out portion 7 is arranged on the outer wall of the top of the guard plate 5.

[0027] In this embodiment, the guard plate 5 is provided with a front tip 6 and an arc-shaped lead-out portion 7 that match the rolled steel, which can effectively reduce and solve the problem of rolled steel pushing when the rolled steel leaves the rolling mill without affecting the rolling, thereby reducing rolled scrap steel.

[0028] Reference Figure 4 The outer walls on both sides of the guard plate 5 are provided with adjustment holes 8.

[0029] Reference Figure 1-2 A rolling chamber 9 is installed on the top outer wall of the base 1, and symmetrically distributed support frames 10 are welded on the outer wall of one side of the rolling chamber 9, and the guide seat 2 is rotatably connected between the two support frames 10.

[0030] Reference Figure 1-3 A hydraulic push rod 11 is hinged between the guide seat 2 and the rolling chamber 9.

[0031] Reference Figure 1-2 A side seat 12 is provided on the top outer wall of the base 1, and a servo motor 13 is fixedly connected to the top outer wall of the side seat 12. The output shaft of the servo motor 13 is fixedly connected to a roller 14 through a coupling, and rolled steel is wound on the outer wall of the roller 14.

[0032] Reference Figure 1 A symmetrically distributed vertical frame 15 is welded to the top outer wall of the base 1, and a guide rod 16 is rotatably connected to the top of the inner wall of the vertical frame 15, and a hydraulic push rod 17 is hinged between the guide rod 16 and the side seat 12.

[0033] Reference Figure 1-2 A pressure plate 18 is welded to the outer wall of one side of the guide rod 16, and a guide roller 19 is rotatably connected to the bottom of the outer wall of one end of the pressure plate 18, and the guide roller 19 is closely attached to the outer wall of the rolled steel.

[0034] Working principle: Before assembly, the guard plate 5 can be hoisted and installed on the integral guide by means of steel ropes and adjustment holes 8. The guard plate 5 is fixed to the guide slide 4. The front tip 6 of the guard plate 5 is completely matched with the steel rolling arc without any gap. During the steel rolling process, the position of the guard plate 5 and the state of the front tip 6 are checked at any time and they cannot be changed. After implementation, the situation of top steel in three-hole steel-outlet can be basically eliminated, and the scrap steel generated by the intermediate rolling can be eliminated.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A guard plate protection device for the top steel of heavy rail rolling, comprising a base (1), characterized in that: A guide seat (2) is arranged above the base (1), and a hydraulic push rod (3) is fixedly connected to the inner wall of the top of the guide seat (2), a piston rod of the hydraulic push rod (3) is fixedly connected to a guide slide (4), and a guard plate (5) is fixedly connected to the top of the outer wall of one end of the guide slide (4); The outer wall at one end of the guard plate (5) is provided with a front tip portion (6), and the outer wall at the top of the guard plate (5) is provided with a curved lead-out portion (7).

2. The guard plate protection device for the top steel of heavy rail rolling according to claim 1 is characterized in that: Adjustment holes (8) are provided on the outer walls of both sides of the guard plate (5).

3. The guard plate protection device for the top steel of heavy rail rolling according to claim 1 is characterized in that: A rolling chamber (9) is installed on the top outer wall of the base (1), and symmetrically distributed support frames (10) are welded to the outer wall of one side of the rolling chamber (9), and the guide seat (2) is rotatably connected between the two support frames (10).

4. The guard plate protection device for the top steel of heavy rail rolling according to claim 1 is characterized in that: A hydraulic push rod 2 (11) is hingedly connected between the guide seat (2) and the steel rolling chamber (9).

5. The guard plate protection device for the top steel of heavy rail rolling according to claim 1 is characterized in that: A side seat (12) is provided on the top outer wall of the base (1), and a servo motor (13) is fixedly connected to the top outer wall of the side seat (12); an output shaft of the servo motor (13) is fixedly connected to a roller (14) via a coupling, and rolled steel is wound on the outer wall of the roller (14).

6. The guard plate protection device for the top steel of heavy rail rolling according to claim 1 is characterized in that: The top outer wall of the base (1) is welded with symmetrically distributed vertical frames (15), and the top of the inner wall of the vertical frame (15) is rotatably connected to a guide rod (16), and a hydraulic push rod three (17) is hinged between the guide rod (16) and the side seat (12).

7. A guard plate protection device for top steel of heavy rail rolling according to claim 6, characterized in that: A pressure plate (18) is welded to the outer wall of one side of the guide rod (16), and a guide roller (19) is rotatably connected to the bottom of the outer wall of one end of the pressure plate (18), and the guide roller (19) is closely attached to the outer wall of the rolled steel.

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