Hot-rolled steel sheet pile pre-bending guide mechanism, device and continuous rolling line

Abstract

The present invention provides a pre-bending guide mechanism, device and continuous rolling line for hot-rolled steel sheet pile section steel, belonging to the technical field of metal rolling equipment. The pre-bending guide mechanism includes an upper guide assembly and a lower guide assembly. The lower guide assembly includes a lower base plate and a lower guide convex plate. The lower base plate is used to connect with the working surface; the lower guide convex plate is arranged on the lower base plate and protrudes from the lower base plate, and is used to be inserted into the lower groove of the rolled piece, and the front end is bent downward; the upper guide assembly includes an upper cover plate, an upper guide convex plate and a connecting piece, and the front end of the upper cover plate is bent upward; the upper guide convex plate is arranged at the lower part of the upper cover plate and protrudes from the upper cover plate, and is used to be inserted into the upper groove of the rolled piece, and the front end is bent upward; the connecting piece is arranged on the upper cover plate, and is used to connect with the suspension mechanism to place the upper guide convex plate above the lower guide convex plate. The present invention can forcibly limit the angle of the rolled piece, avoid the danger caused by the introduction angle deviation, and is conducive to improving production efficiency, and improving the service life and cycle of the equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal rolling equipment, and more specifically, relates to a hot-rolled steel sheet pile section steel pre-bending guide mechanism, device and continuous rolling line. Background Art

[0002] With the development of steel rolling technology, the rolling speed of the current steel continuous rolling line is very fast. In order to ensure the rolling quality and speed of the steel, guides are usually installed before and after the roll pass to help the rolled piece enter and exit the roll pass accurately and stably in the established direction and state. At present, hot-rolled steel sheet pile steel is rolled by this continuous rolling line, which has the advantages of fast rolling speed, high output, close arrangement of rolling mills, short interval time, and small temperature drop of rolled pieces. However, there are still disadvantages, that is, the bridge between continuous rolling mill frames cannot effectively control the warping and side bending, resulting in the rolled piece not being able to smoothly bite into the guide and pass of the next rolling mill. In other words, it is still difficult to effectively control the introduction angle of the rolled piece only by relying on the guide when the rolled piece is transferred between different rolling equipment. Therefore, it is sometimes easy to cause excessive wear or damage to the guide, and even lead to accidents such as scraping the rolled piece, extrusion of steel, and entanglement of rollers, which is both dangerous and not conducive to improving production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a hot-rolled steel sheet pile pre-bending guide mechanism, device and continuous rolling line to solve the technical problems in the prior art that it is difficult to effectively control the introduction angle when the rolled piece is transferred between different rolling equipment only by relying on guides, which causes production risks and is not conducive to improving production efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a hot-rolled steel sheet pile steel pre-bending guide mechanism, including an upper guide assembly and a lower guide assembly, the lower guide assembly includes a lower base plate and a lower guide convex plate, the lower base plate is used to connect with the working surface; the lower guide convex plate is arranged on the lower base plate and protrudes from the lower base plate, and is used to be placed in the lower groove of the rolled piece, and the front end is bent downward; the upper guide assembly includes an upper cover plate, an upper guide convex plate and a connecting piece, and the front end of the upper cover plate is bent upward; the upper guide convex plate is arranged at the lower part of the upper cover plate and protrudes from the upper cover plate, and is used to be placed in the upper groove of the rolled piece, and the front end is bent upward; the connecting piece is arranged on the upper cover plate, and is used to connect with the suspension mechanism to place the upper guide convex plate above the lower guide convex plate.

[0005] Furthermore, in the aforementioned hot-rolled steel sheet pile steel pre-bending guide mechanism, the connecting part includes a first lifting ear and a second lifting ear, the first lifting ear is arranged on the upper cover plate and is provided with a first through hole; the second lifting ear is arranged on the upper cover plate and is parallel to the first lifting ear, and is provided with a third through hole aligned with the second through hole and the first through hole.

[0006] Furthermore, in the aforementioned hot-rolled steel sheet pile pre-bending guide mechanism, the second through hole is located outside the projection of the first lifting ear on the plane where the second lifting ear is located; and the second through hole is higher than the third through hole.

[0007] Furthermore, in the aforementioned hot-rolled steel sheet pile pre-bending guide mechanism, the front ends of the upper guide convex plate and the lower guide convex plate are narrower than the middle part; the rear ends of the upper guide convex plate and the lower guide convex plate are provided with inclined surfaces; the connecting parts are divided into several groups, and the several groups of connecting parts are evenly distributed on the upper cover plate and fixedly connected to the upper cover plate.

[0008] Furthermore, in the aforementioned hot-rolled steel sheet pile pre-bending guide mechanism, the upper guide assembly includes an upper connecting side plate, which is arranged between the upper cover plate and the upper guide convex plate, and is used to tightly connect the edge of the upper guide convex plate with the upper cover plate; the lower guide assembly includes a lower connecting side plate, which is arranged between the lower base plate and the lower guide convex plate, and is used to tightly connect the edge of the lower guide convex plate with the lower base plate.

[0009] Furthermore, in the aforementioned hot-rolled steel sheet pile pre-bending guide mechanism, there is a cavity between the lower base plate and the lower guide convex plate, the lower base plate is provided with a through hole for connecting with the working surface, and the lower connecting side plate is provided with a mounting hole connecting the inside and outside of the cavity.

[0010] Furthermore, in the aforementioned hot-rolled steel sheet pile pre-bending guide mechanism, a sealed cavity is provided inside the front bent portion of the upper guide convex plate and the lower guide convex plate, and a shock-absorbing sand filling body and a temperature control component are provided in the sealed cavity.

[0011] To achieve the above objectives, the present invention further provides a hot-rolled steel sheet pile steel pre-bending guide device, comprising the above-mentioned hot-rolled steel sheet pile steel pre-bending guide mechanism, a bracket for installing a lower guide assembly and a suspension mechanism for installing an upper guide assembly.

[0012] Furthermore, in the aforementioned hot-rolled steel sheet pile section steel pre-bending guide device, the suspension mechanism is a sling or a mechanical arm; the suspension mechanism is connected to the upper guide assembly through an elastic assembly; and a height adjustment assembly for adjusting the height of the lower guide assembly is provided on the bracket.

[0013] To achieve the above-mentioned purpose, the present invention further provides a hot-rolled steel sheet pile steel continuous rolling line, including the above-mentioned hot-rolled steel sheet pile steel pre-bending guide mechanism or the above-mentioned hot-rolled steel sheet pile steel pre-bending guide device.

[0014] The beneficial effect of the hot-rolled steel sheet pile steel pre-bending guide mechanism provided by the present invention is that: compared with the prior art, the present invention forms a fixed channel through which the steel sheet pile can pass through by cooperating with a lower guide assembly having a lower base plate and a lower guide convex plate and an upper guide assembly having an upper cover plate, an upper guide convex plate and a connecting piece, and utilizes the structural characteristics of the steel sheet pile steel itself to control or force the torsion or bending deformation of the rolled piece through the lower guide convex plate, the upper guide convex plate and the upper cover plate, and make it move in a certain direction, so as to effectively control the uneven distribution of the pressing amount, the uneven temperature of the rolled piece, the uneven elastic deformation of the roller, and the uneven rolling of the roller. The instability of lateral bending and warping caused by reasons such as uniform thermal expansion, uneven wear of rolls, and changes in steel temperature can be eliminated. The rolled piece can be correctly and accurately introduced into the guide and roll hole before entering the next rolling equipment. The introduction angle is accurate and controllable, ensuring that the rolled piece is stably deformed in the hole and obtains the required geometric shape and size, avoiding the danger caused by deviation of the introduction angle; it can also avoid excessive collisions between the rolled piece and the guide, which is beneficial to improving production efficiency and increasing the service life and cycle of the guide and hole; at the same time, the rolled piece can be smoothly and correctly guided out of the hole to prevent steel jam accidents.

[0015] The beneficial effect of the hot-rolled steel sheet pile pre-bending guide device provided by the present invention is that compared with the prior art, the present invention can make the guiding angle of the pre-bending guide mechanism accurately controllable through the cooperation of the pre-bending guide mechanism, the bracket and the suspension mechanism, thereby making the angle of the rolled piece accurately controllable, avoiding the danger caused by the introduction angle deviation, which is beneficial to improving production efficiency and increasing the service life and cycle of the guide and the hole type.

[0016] The beneficial effect of the hot-rolled steel sheet pile section continuous rolling line provided by the present invention is that, compared with the prior art, the present invention can make the angle of the rolled piece accurately controllable when it is transferred between different rolling equipment by setting a pre-bending guide mechanism or a pre-bending guide device, and can avoid the danger caused by the introduction angle deviation, which is beneficial to improving production efficiency and increasing the service life and cycle of the rolling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic side structural diagram of a hot-rolled steel sheet pile section steel pre-bending guide mechanism provided in an embodiment of the present invention;

[0019] Figure 2A schematic diagram of the top structure of an upper guide assembly of a hot-rolled steel sheet pile section steel pre-bending guide mechanism provided in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the main structure of an upper guide assembly of a hot-rolled steel sheet pile section steel pre-bending guide mechanism provided in an embodiment of the present invention;

[0021] Figure 4 A schematic side structural diagram of a second lifting lug of a hot-rolled steel sheet pile section steel pre-bending guide mechanism provided by an embodiment of the present invention;

[0022] Figure 5 A schematic top view of the structure of a lower guide assembly of a hot-rolled steel sheet pile section steel pre-bending guide mechanism provided in an embodiment of the present invention.

[0023] Among them, the reference numerals in the figure are:

[0024] 10. Lower substrate; 11. Drilling hole;

[0025] 20. Lower guide convex plate; 30. Upper cover plate; 40. Upper guide convex plate;

[0026] 50. Connecting piece; 51. First lifting lug; 52. Second lifting lug;

[0027] 53, first through hole; 54, second through hole; 55, third through hole;

[0028] 60. Upper connecting side panel; 70. Lower connecting side panel; 71. Mounting hole. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. 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.

[0030] A hot-rolled steel sheet pile section steel pre-bending guide mechanism, device and continuous rolling line provided by the present invention are now described.

[0031] Please also read Figure 1 , Figure 2 , Figure 3 and Figure 5The hot-rolled steel sheet pile pre-bending guide mechanism provided by the present invention comprises an upper guide assembly and a lower guide assembly, wherein the lower guide assembly comprises a lower base plate 10 and a lower guide convex plate 20, wherein the lower base plate 10 is used to be connected to a working surface; the lower guide convex plate 20 is arranged on the lower base plate 10 and protrudes from the lower base plate 10, and is used to be inserted into the lower groove of the rolled piece, and the front end is bent downward; the upper guide assembly comprises an upper cover plate 30, an upper guide convex plate 40 and a connecting member 50, and the front end of the upper cover plate 30 is bent upward; the upper guide convex plate 40 is arranged at the lower part of the upper cover plate 30 and protrudes from the upper cover plate 30, and is used to be inserted into the upper groove of the rolled piece, and the front end is bent upward; the connecting member 50 is arranged on the upper cover plate 30, and is used to be connected to a suspension mechanism to place the upper guide convex plate 40 above the lower guide convex plate 20.

[0032] Compared with the prior art, the hot-rolled steel sheet pile pre-bending guide mechanism provided by the present invention forms a fixed passage through which the steel sheet can pass by, by means of a lower guide assembly having a lower base plate 10 and a lower guide convex plate 20 and an upper guide assembly having an upper cover plate 30, an upper guide convex plate 40 and a connecting piece 50. The structural characteristics of the steel sheet pile steel are utilized to control or force the torsion or bending deformation of the rolled piece through the lower guide convex plate 20, the upper guide convex plate 40 and the upper cover plate 30, and to make it move in a certain direction, so as to effectively control the uneven distribution of the pressing amount, the uneven temperature of the rolled piece, the uneven elastic deformation of the roller, and the uneven rolling of the roller. The uneven thermal expansion, uneven wear of the rolls, changes in steel temperature and other reasons that cause lateral bending and warping instability can be avoided. The rolled piece can be correctly and accurately introduced into the guide and roll pass before entering the next rolling equipment. The introduction angle is accurate and controllable, ensuring that the rolled piece is stably deformed in the pass and obtains the required geometric shape and size, avoiding the danger caused by the deviation of the introduction angle; it can also avoid excessive collisions between the rolled piece and the guide, which is beneficial to improving production efficiency and increasing the service life and cycle of the guide and pass; at the same time, the rolled piece can be smoothly and correctly guided out of the pass to prevent steel jam accidents.

[0033] Please also read Figures 1 to 4 As a specific embodiment of the hot-rolled steel sheet pile steel pre-bending guide mechanism provided by the present invention, the connecting piece 50 includes a first lifting lug 51 and a second lifting lug 52. The first lifting lug 51 is arranged on the upper cover plate 30 and is provided with a first through hole 53; the second lifting lug 52 is arranged on the upper cover plate 30 and is parallel to the first lifting lug 51, and is provided with a third through hole 55 aligned with the second through hole 54 and the first through hole 53.

[0034] The second through hole 54 is located outside the projection of the first lifting ear 51 on the plane where the second lifting ear 52 is located; the second through hole 54 is higher than the third through hole 55 .

[0035] The first through hole 53 cooperates with the third through hole 55 and can be used as a hinge seat to be hingedly connected to the suspension mechanism, or as a U-shaped connecting piece to be connected to the suspension mechanism. The second through hole 54 is not blocked by the first lifting ear 51 and can be hung with a hook at will. Therefore, the first lifting ear 51 cooperates with the second lifting ear 52 to facilitate various connection methods and facilitate transportation, installation and use.

[0036] Please also read Figures 1 to 5 As a specific embodiment of the hot-rolled steel sheet pile pre-bending guide mechanism provided by the present invention, the front ends of the upper guide convex plate 40 and the lower guide convex plate 20 are narrower than the middle parts; the rear ends of the upper guide convex plate 40 and the lower guide convex plate 20 are provided with inclined surfaces; the connecting pieces 50 are divided into several groups, and the several groups of connecting pieces 50 are evenly distributed on the upper cover plate 30 and fixedly connected to the upper cover plate 30.

[0037] Please also read Figure 1 , Figure 3 and Figure 5 As a specific embodiment of the hot-rolled steel sheet pile pre-bending guide mechanism provided by the present invention, the upper guide assembly includes an upper connecting side plate 60, which is arranged between the upper cover plate 30 and the upper guide convex plate 40, and is used to tightly connect the edge of the upper guide convex plate 40 with the upper cover plate 30; the lower guide assembly includes a lower connecting side plate 70, which is arranged between the lower base plate 10 and the lower guide convex plate 20, and is used to tightly connect the edge of the lower guide convex plate 20 with the lower base plate 10.

[0038] There is a cavity between the lower base plate 10 and the lower guide protrusion 20. The lower base plate 10 is provided with a through hole 11 for connecting with the working surface. The lower connecting side plate 70 is provided with a mounting hole 71 connecting the inside and outside of the cavity, so that the staff can install bolts, pins and other components in the cavity to connect the lower base plate 10 with the working surface, and at the same time facilitate heat dissipation.

[0039] As a specific embodiment of the pre-bending guide mechanism for hot-rolled steel sheet piles provided by the present invention, a sealed cavity is provided inside the front curved part of the upper guide convex plate 40 and / or the lower guide convex plate 20, and a shock-absorbing sand filling body is provided in the sealed cavity, so as to reduce the vibration and displacement caused by the impact when the steel enters through the movement of the shock-absorbing sand filling body in the sealed cavity. The shock-absorbing sand filling body can be loose steel sand, or a steel ball or steel block moving along the direction of entry of the steel. At the same time, a temperature control component is provided in the sealed cavity, and the temperature control component can be a heat exchange tube or a heating wire or other components arranged in the shock-absorbing sand filling body along the direction of entry of the rolled piece, so as to transfer cold or heat to the side wall of the sealed cavity through the shock-absorbing sand filling body. A heat-conducting wear-resistant sleeve is provided on the outside of the heat exchange tube or the heating wire, and the shock-absorbing sand filling body is filled with a thermal conductor, which is beneficial to reduce noise, improve heat transfer efficiency, and make the shock absorption process smoother. Since there are gaps between the shock-absorbing sand filling bodies, the shock-absorbing sand filling bodies are stationary when the rolled piece does not impact the upper guide convex plate 40 and the lower guide convex plate 20, and the heat transfer efficiency in the sealed cavity is reduced; when the rolled piece impacts, the shock-absorbing sand filling bodies move to improve the heat transfer efficiency in the sealed cavity, which is beneficial for regulating the temperature of the upper guide convex plate 40 and the lower guide convex plate 20 while saving energy, thereby reducing the impact on the temperature of the rolled piece.

[0040] The present invention provides a hot-rolled steel sheet pile section steel pre-bending guide device, comprising the above-mentioned hot-rolled steel sheet pile section steel pre-bending guide mechanism, a bracket for installing a lower guide component and a suspension mechanism for installing an upper guide component.

[0041] Compared with the prior art, the hot-rolled steel sheet pile pre-bending guide device provided by the present invention can make the guiding angle of the pre-bending guide mechanism accurately controllable through the cooperation of the pre-bending guide mechanism, the bracket and the suspension mechanism, thereby making the angle of the rolled piece accurately controllable, avoiding the danger caused by the introduction angle deviation, being beneficial to improving the production efficiency, and increasing the service life and cycle of the guide and the hole type.

[0042] As a specific embodiment of the hot-rolled steel sheet pile steel pre-bending guide device provided by the present invention, the suspension mechanism is a sling or a mechanical arm; the suspension mechanism is connected to the upper guide component through an elastic component; and a height adjustment component for adjusting the height of the lower guide component is provided on the bracket.

[0043] The present invention provides a hot-rolled steel sheet pile steel continuous rolling line, comprising the above-mentioned hot-rolled steel sheet pile steel pre-bending guide mechanism or the above-mentioned hot-rolled steel sheet pile steel pre-bending guide device.

[0044] Compared with the prior art, the hot-rolled steel sheet pile section continuous rolling line provided by the present invention can make the angle of the rolled piece accurately controllable when it is transferred between different rolling equipment by setting a pre-bending guide mechanism or a pre-bending guide device, and can avoid the danger caused by the introduction angle deviation, which is beneficial to improving production efficiency and increasing the service life and cycle of the rolling equipment.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot-rolled steel sheet pile pre-bending guide mechanism, characterized in that: It comprises an upper guide assembly and a lower guide assembly, wherein the lower guide assembly comprises: A lower base plate (10) used for connecting to a working surface; A lower guide convex plate (20) is provided on the lower base plate (10) and protrudes from the lower base plate (10), and is used for being placed in the lower groove of the rolled piece, and has a front end bent downward; The upper guide assembly comprises: An upper cover plate (30) having a front end bent upward; An upper guide convex plate (40) is provided at the lower part of the upper cover plate (30) and protrudes from the upper cover plate (30), and is used for being placed in the upper groove of the rolled piece, and the front end of the upper guide convex plate (40) is bent upward; and A connecting member (50) is provided on the upper cover plate (30) and is used to connect with the suspension mechanism to place the upper guide convex plate (40) above the lower guide convex plate (20); A sealed cavity is provided inside the front curved parts of the upper guide convex plate (40) and the lower guide convex plate (20), and a shock-absorbing sand filling body and a temperature control component are provided in the sealed cavity.

2. The hot-rolled steel sheet pile pre-bending guide mechanism according to claim 1, characterized in that: The connecting member (50) comprises: A first lifting ear (51) is provided on the upper cover plate (30) and is provided with a first through hole (53); and The second lifting ear (52) is provided on the upper cover plate (30) and is parallel to the first lifting ear (51), and is provided with a third through hole (55) aligned with the second through hole (54) and the first through hole (53).

3. The hot-rolled steel sheet pile pre-bending guide mechanism according to claim 2, characterized in that: The second through hole (54) is located outside the projection of the first lifting ear (51) on the plane where the second lifting ear (52) is located; the second through hole (54) is higher than the third through hole (55).

4. The hot-rolled steel sheet pile pre-bending guide mechanism according to claim 1, characterized in that: The front ends of the upper guide convex plate (40) and the lower guide convex plate (20) are narrower than the middle parts; the rear ends of the upper guide convex plate (40) and the lower guide convex plate (20) are provided with inclined surfaces; the connecting members (50) are divided into a plurality of groups, and the plurality of groups of connecting members (50) are evenly distributed on the upper cover plate (30) and fixedly connected to the upper cover plate (30).

5. The hot-rolled steel sheet pile pre-bending guide mechanism according to claim 1, characterized in that: The upper guide assembly comprises: An upper connecting side plate (60) is provided between the upper cover plate (30) and the upper guide convex plate (40) and is used to tightly connect the edge of the upper guide convex plate (40) to the upper cover plate (30); The lower guide assembly comprises: A lower connecting side plate (70) is provided between the lower base plate (10) and the lower guide convex plate (20) and is used to tightly connect the edge of the lower guide convex plate (20) to the lower base plate (10).

6. The hot-rolled steel sheet pile pre-bending guide mechanism according to claim 5, characterized in that: A cavity is provided between the lower base plate (10) and the lower guide convex plate (20); a through hole (11) for connecting to a working surface is provided on the lower base plate (10); and a mounting hole (71) communicating with the inside and outside of the cavity is provided on the lower connecting side plate (70).

7. A hot-rolled steel sheet pile pre-bending guide device, characterized in that: It comprises a hot-rolled steel sheet pile section steel pre-bending guide mechanism as claimed in any one of claims 1 to 6, a bracket for installing the lower guide assembly and a suspension mechanism for installing the upper guide assembly.

8. The hot-rolled steel sheet pile pre-bending guide device according to claim 7, characterized in that: The suspension mechanism is a sling or a mechanical arm; the suspension mechanism is connected to the upper guide assembly through an elastic assembly; a height adjustment assembly for adjusting the height of the lower guide assembly is provided on the bracket.

9. A hot-rolled steel sheet pile continuous rolling line, characterized in that: It comprises a hot-rolled steel sheet pile steel pre-bending guide mechanism as claimed in any one of claims 1 to 6 or a hot-rolled steel sheet pile steel pre-bending guide device as claimed in any one of claims 7 or 8.

Images