Plate lifting device with water cooling function

Abstract

The invention provides a plate lifting device with water cooling, which comprises a lifting beam, a roller component, a lifting assembly and a hinge point support, the roller component is arranged on the lifting beam along the length direction of the lifting beam, one end of the lifting beam is hinged with the hinge point support, and the other end of the lifting beam is lifted through the lifting assembly. Water cooling channels for cooling water to circulate are arranged on the two sides of the lifting beam in the length direction of the lifting beam. The water cooling channels are arranged on the two sides of the lifting beam, circulating cooling water flows through key areas of the roller components to reduce the temperature of the device, the roller components on the lifting beam are prevented from being stuck, the lifting beam is prevented from deforming in a high-temperature environment, the reliability of the whole device is improved, the service life of the whole device is prolonged, and the water cooling channels are compact in structure and low in cost. The lifting beam and an original structure can keep the same installation size, and a roller bed foundation does not need to be transformed.

Description

Technical Field

[0001] The present invention belongs to the technical field of metallurgical rolling, and particularly relates to a sheet lifting device with water cooling. Background Art

[0002] In the production of hot-rolled medium and heavy plates, the rolled steel plates need to be subjected to structure homogenization treatment through a solution furnace. Before entering the furnace, they must be lifted off the conveying roller table by a hydraulic lifting device to complete centering and positioning. This process requires the lifting beam to adopt a roller support structure, and the sliding friction is converted into rolling friction to avoid scratching the surface of the steel plate.

[0003] However, the high-temperature environment of 700 - 800 °C in the front area of the solution furnace causes serious defects in the roller system of the lifting device: (1) The roller system is jammed due to the combined action of bearing lubrication failure and metal expansion; (2) Thermal radiation causes plastic deformation of the axle and thermal bending deformation of the lifting beam; (3) The existing heat-resistant steel solution increases the cost by 50%. The high-temperature environment not only causes the rollers to jam and scratch the surface of the sheet, but also reduces the service life of the equipment and increases the equipment maintenance cost. Moreover, the lifting beam of the lifting device is installed in a limited space of 200 mm in the gap of the roller table, and a conventional water cooling system cannot be implemented. Summary of the Invention

[0004] The purpose of the present invention is to provide a sheet lifting device with water cooling, which can at least solve some of the defects existing in the prior art.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sheet lifting device with water cooling includes a lifting beam, a roller component, a lifting component, and a hinge point support. The roller component is arranged on the lifting beam along the length direction of the lifting beam. One end of the lifting beam is hinged to the hinge point support, and the other end moves up and down through the lifting component. Water cooling channels for cooling water to flow through are arranged along the length direction on both sides of the lifting beam.

[0007] Further, the water cooling channels are in a U-shaped loop, and the two side walls of the U shape are arranged vertically on the side walls of the lifting beam.

[0008] Further, the distance between the U-shaped side walls of the water cooling channels is greater than the diameter of the roller shaft of the roller component, and the roller shaft passes through between the two side walls of the U-shaped water cooling channels.

[0009] Further, both the water inlet and the water return of the water cooling channels are located on the side close to the hinge point support.

[0010] Further, the water inlets of the water cooling channels on both sides of the lifting beam are connected, and the water returns of the water cooling channels on both sides of the lifting beam are connected.

[0011] Further, the water-cooling channels on both sides of the lifting beam are symmetrically arranged.

[0012] Further, the total width of the lifting beam and the water-cooling channel is not greater than 180 mm.

[0013] Further, there are multiple lifting beams, and the multiple lifting beams are arranged side by side at intervals, and one end of the lifting beam far from the hinge support is connected by a connecting cross beam to form an integral body.

[0014] Further, there are multiple groups of lifting components, which are arranged along the length direction of the connecting cross beam and are spaced apart by one lifting beam.

[0015] Further, a self-lubricating bushing is provided between the lifting beam and the hinge support, and a self-lubricating bushing is provided on the roller shaft of the roller component.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) The sheet material lifting device with water cooling provided by the present invention is provided with water-cooling channels on both sides of the lifting beam, and the circulating cooling water flows through the key areas of the roller components to reduce the equipment temperature, so as to prevent the roller components on the lifting beam from being stuck and the lifting beam from deforming in a high-temperature environment, thereby improving the reliability and service life of the entire equipment.

[0018] (2) The sheet material lifting device with water cooling provided by the present invention adopts a compact water-cooling structure. The water-cooling channel is designed to be closely attached to the side wall of the lifting beam, and its thickness is small. It can maintain the same installation dimensions as the original structure without modifying the roller path foundation, and has a simple structure and low manufacturing cost.

[0019] (3) In the sheet material lifting device with water cooling provided by the present invention, a weld leakage prevention design is adopted between the water-cooling channel and the lifting beam to avoid local quality problems caused by the cooling water contacting the steel plate. At the same time, the weld position is designed, and a continuous full-weld process is adopted to ensure the sealing performance of the water-cooling channel.

[0020] The present invention will be further described in detail below with reference to the accompanying drawings. Description of the Drawings

[0021] Figure 1 is a three-dimensional axonometric view of the total assembly of the sheet material lifting device with water cooling of the present invention;

[0022] Figure 2 is a left view of the total assembly of the lifting beam in the embodiment of the present invention;

[0023] Figure 3 is Figure 2 the A-A cross-sectional view in

[0024] Figure 4It is a partial enlarged schematic diagram of the water inlet and water return of the water cooling channel on the lifting beam in the embodiment of the present invention;

[0025] Figure 5 It is Figure 2 a partial sectional enlarged schematic diagram of the water cooling channel at part I in

[0026] Explanation of reference numerals: 1. Lifting beam; 2. Roller component; 3. Water cooling channel; 4. Hinge support; 5. Lifting component; 6. Link beam; 7. Water inlet cavity channel; 8. Roller shaft; 9. Water return cavity channel; 10. Self-lubricating bushing; 11. Water inlet; 12. Water return. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a contact connection or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0031] Such as Figures 1 to 5As shown, this embodiment provides a plate lifting device with water cooling, including a lifting beam 1, a roller component 2, a lifting assembly 5 and a hinge support 4, wherein the roller component 2 is arranged on the lifting beam 1 along the length direction of the lifting beam 1, one end of the lifting beam 1 is hinged to the hinge support 4, and the other end is lifted and lowered by the lifting assembly 5, and water cooling channels 3 for cooling water to flow are arranged on both sides of the lifting beam 1 along the length direction thereof. Among them, the lifting assembly 5 can be, but is not limited to, a lifting cylinder.

[0032] The specific process of using the plate lifting device of this embodiment to lift the rolled steel plate off the conveyor roller to complete the centering and positioning is as follows:

[0033] First, the steel plate is transported to the top of the plate lifting device through a roller table or other equipment, and the lifting component 5 pushes the lifting beam 1 to rotate around the hinge support 4. The height of the roller component 2 on the lifting beam 1 is increased, and the steel plate is lifted up. During this process, low-temperature cooling water flows through the water-cooling channels 3 on both sides of the lifting beam 1 along the side wall of the lifting beam 1 through the key area of ​​the roller component 2, taking away the heat of the lifting beam 1 and the roller component 2. During the cooling process, the cooling water will not contact the steel plate, ensuring the high temperature process requirements in stainless steel production; after the steel plate leaves the roller surface, the centering device or other transportation device pushes the steel plate to move on the roller component 2 of the lifting beam 1. During this process, since the lifting beam 1 and the roller component 2 are cooled by the circulating cooling water in the water-cooling channel 3, the roller component 2 is guaranteed to rotate flexibly and will not be deformed and stuck due to high temperature, thereby preventing the sliding friction from scratching the surface of the steel plate; after the steel plate completes centering or other actions, the lifting component 5 retracts and the steel plate returns to the roller surface.

[0034] Optimally, a self-lubricating bushing is provided between the lifting beam 1 and the hinge support 4 to ensure that the lifting beam 1 can rotate smoothly around the hinge support 4; a self-lubricating bushing 10 is provided on the roller shaft 8 of the roller component 2 to ensure flexible rotation of the roller component 2.

[0035] Optimized implementation methods, such as Figure 2 , Figure 3 and Figure 5As shown, the designed water-cooling channel 3 is in a U-shaped loop, and the two side walls of the U-shaped loop are arranged vertically on the side wall of the lifting beam 1. Among them, the upper side wall in the U-shaped loop serves as the water inlet chamber channel 7 for the cooling water, and the lower side wall serves as the water return chamber channel 9 for the cooling water. In this way, through the U-shaped loop design, the cooling water flows through the key areas of the lifting beam 1 and the roller component 2 twice, improving the cooling efficiency. At the same time, the two side walls of the U-shaped loop are designed to be arranged vertically, reducing the occupied space of the water-cooling channel 3 in the width direction of the lifting beam 1. Specifically, the total width of the designed lifting beam 1 and the water-cooling channel 3 is not greater than 180 mm, so that the entire sheet material lifting device can maintain the same installation dimensions as the original structure (i.e., the lifting device without the water-cooling structure), and the lifting beam can be installed in the 200 mm limited space of the existing roller path gap without modifying the roller path foundation.

[0036] Optimally, when the water-cooling channel 3 is welded and installed on both sides of the lifting beam 1, it should be noted during the manufacturing process that the distance between the U-shaped side walls of the water-cooling channel 3 should be greater than the diameter of the roller shaft 8 of the roller component 2, so that the roller shaft 8 can pass through between the two side walls of the U-shaped water-cooling channel 3. In this embodiment, the distance between the U-shaped side walls of the specifically designed water-cooling channel 3 is greater than the diameter of the roller shaft 8 of the roller component 2 by 20 mm, ensuring a thickness of about 10 mm up and down, and using a whole piece of steel plate to weld it full up and down. After the entire lifting beam 1 is completely welded, the shaft hole of the roller component 2 is processed. This not only ensures the simplicity of the manufacturing process but also ensures the sealing of the water-cooling channel 3. Further, the entire water-cooling channel 3 should be symmetric with the center line of the roller shaft 8 of the roller component 2 up and down. When welding the steel plate of the water-cooling channel 3, the weld seam should be welded full to prevent the water-cooling channel from leaking. After processing, a leak test is also required to check for any leakage. Through this weld leak prevention guarantee design, it avoids the local quality problems caused by the cooling water contacting the steel plate. At the same time, the weld position is designed, and the continuous full-weld process is adopted to ensure the water channel seal.

[0037] Optimally, the water inlet 11 and the water outlet 12 of the designed water-cooling channel 3 are both located close to the hinge point support 4 side, so that the rotation amplitude of the hose connected to the water-cooling channel 3 during the lifting process of the lifting beam 1 is minimized.

[0038] Furthermore, the water-cooling channels 3 on both sides of the lifting beam 1 are symmetrically arranged. The water inlets 11 of the water-cooling channels 3 on both sides of the lifting beam 1 are connected, and the water outlets 12 of the water-cooling channels 3 on both sides of the lifting beam 1 are connected. The low-temperature cooling water in the clean circulating water pump house enters through a hose from the water inlet 11, and is divided into two at the water inlet 11. The two streams of cooling water respectively enter the inlet cavity channels 7 on both sides of the lifting beam 1, travel in a U shape along the side wall of the lifting beam 1 to take away the heat of the lifting beam 1 and the roller component 2, and then merge into one at the water outlet 12 and flow back to the clean circulating water pump house; in this way, a tee pipe fitting can be designed, and only two hoses are used to connect to the water inlet 11 and the water outlet 12 respectively, simplifying the pipeline connection of the cooling water circulation.

[0039] In an optimized implementation manner, there are multiple lifting beams 1, and the multiple lifting beams 1 are arranged side by side at intervals. Generally, three to five lifting beams 1 are designed, and the distance between adjacent lifting beams 1 is 2 m; at the same time, one ends of the multiple lifting beams 1 far from the hinge support 4 are connected by a connecting cross beam 6 to form an integral body. The rolled steel plates are lifted by the multiple lifting beams 1, ensuring the stability of the steel plates during the lifting process. Connecting the multiple lifting beams 1 into an integral body by the connecting cross beam 6 ensures the consistency of the multiple lifting beams 1 during the lifting process and increases the stability of the lifting beams 1.

[0040] Furthermore, since the multiple lifting beams 1 are connected by the connecting cross beam 6 to form an integral body, it is not necessary to provide a lifting component 5 for each lifting beam 1 to provide the power for its lifting rotation. In this embodiment, multiple groups of the lifting components 5 are designed, and the multiple groups of the lifting components 5 are arranged along the length direction of the connecting cross beam 6 and spaced apart by one lifting beam 1. While ensuring that the multiple lifting beams 1 have sufficient and stable lifting power, the number of the lifting components 5 is reduced, and the production cost is lowered.

[0041] The above examples are only illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. Any design identical or similar to the present invention falls within the protection scope of the present invention.

Claims

1. A sheet metal lifting device with water cooling, characterized in that: It includes a lifting beam, a roller component, a lifting assembly and a hinge support. The roller component is arranged on the lifting beam along the length direction of the lifting beam. One end of the lifting beam is hinged to the hinge support, and the other end moves up and down through the lifting assembly. Water cooling channels for cooling water to flow through are arranged on both sides of the lifting beam along its length direction.

2. The sheet lifting device with water cooling according to claim 1, characterized in that: The water cooling channels are in a U-shaped loop, and the two side walls of the U-shape are arranged vertically on the side wall of the lifting beam.

3. The sheet lifting device with water cooling according to claim 2, characterized in that: The distance between the U-shaped side walls of the water cooling channels is greater than the diameter of the roller shaft of the roller component, and the roller shaft passes through between the two side walls of the U-shaped water cooling channel.

4. The sheet material lifting device with water cooling according to claim 2, characterized in that: Both the water inlet and the water return of the water cooling channels are located on the side close to the hinge support.

5. The sheet metal lifting device with water cooling according to claim 1 or 2, characterized in that: The water inlets of the water cooling channels on both sides of the lifting beam are connected, and the water returns of the water cooling channels on both sides of the lifting beam are connected.

6. The sheet material lifting device with water cooling according to claim 1, wherein: The water cooling channels on both sides of the lifting beam are symmetrically arranged.

7. The sheet lifting device with water cooling according to claim 1, characterized in that: The total width of the lifting beam and the water cooling channels is not greater than 180 mm.

8. The sheet lifting device with water cooling according to claim 1, wherein: There are multiple lifting beams, and the multiple lifting beams are arranged side by side at intervals. One end of each lifting beam far from the hinge support is connected by a connecting cross beam to form an integral body.

9. The sheet lifting device with water cooling according to claim 8, wherein: There are multiple groups of lifting assemblies, which are arranged along the length direction of the connecting cross beam and spaced by one lifting beam.

10. The sheet metal lifting device with water cooling according to claim 1, characterized in that: A self-lubricating bushing is provided between the lifting beam and the hinge support, and a self-lubricating bushing is provided on the roller shaft of the roller component.

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