Adjustable stand for rolling mill

Abstract

The utility model discloses a kind of adjusting type rack for rolling mill, it is related to the field of rolling mill, and this kind of adjusting type rack for rolling mill includes two opposing bottom cross beams, the top of two bottom cross beams is fixed with two opposing support plates, cross beam and support plate constitute rack;This kind of adjusting type rack for rolling mill is isolated by telescopic rubber sleeve and bearing frame and the like structure, piston rod can be isolated with rolling environment, prevent dust impurities and the like adhere to piston rod outside, limiting structure ensures that it does not follow movement when hydraulic cylinder acts, guarantee that the adhering part of telescopic rubber sleeve is tightly attached to the outer wall of piston rod, remove the impurities of telescopic rod lower end outer wall in telescopic rod telescopic process, effectively solve the problem that piston rod is exposed and easily adheres to impurities, leading to sealing element wear and tear and surface scratch, guarantee normal operation of hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the field of rolling mills, and in particular to an adjustable frame for rolling mills. Background Technology

[0002] In existing rolling mill stands, hydraulic cylinder piston rods are often directly exposed to the rolling environment. Iron filings, dust, and other impurities generated during the rolling process easily adhere to the outer wall of the piston rod. As the piston rod reciprocates, these impurities enter the sealing surface, accelerating seal wear and causing hydraulic oil leakage. Simultaneously, hard impurities can scratch the piston rod surface, compromising its precision. This not only shortens the service life of the hydraulic cylinder but also affects the stability of roll height adjustment, increasing equipment maintenance frequency and costs. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide an adjustable frame for rolling mills, which solves the problem that existing adjustable rolling mill frames lack a protective structure for the hydraulic cylinder piston rod, making the piston rod susceptible to damage from impurities.

[0004] To address the problems in the existing technology, the technical solution of this utility model is as follows: An adjustable frame for a rolling mill includes a frame, on which a support frame is provided. The support frame has a transversely through inner cavity. The left and right openings of the inner cavity of the support frame are closed by the frame. A hydraulic cylinder is installed in the middle of the top surface of the support frame. The piston rod of the hydraulic cylinder passes through the upper through hole on the top surface of the support frame, the inner cavity of the support frame, and the lower through hole on the bottom surface of the support frame in sequence, extending to the bottom of the support frame. The piston rod end is connected to a connector for mounting the upper roller. The bottom of the support frame is provided with a protective component for isolating the piston rod from the external environment. The protective component includes a telescopic rubber sleeve that can be stretched. The support frame is provided with an observation component for observing the state of the piston rod.

[0005] Optionally, the frame includes two opposing bottom crossbeams, and two opposing support plates are fixed to the top of the two bottom crossbeams. The upper ends of the two support plates are fixedly connected to the bearing frame, and the two support plates respectively close the left and right openings of the inner cavity of the bearing frame. The telescopic rubber sleeve is fixed in the middle of the bottom surface of the bearing frame, and is in the shape of an inverted cone. Its lower end is provided with a sleeve-shaped fitting part that fits against the outer wall of the piston rod. The bottom surface of the bearing frame is provided with a limiting structure around the telescopic rubber sleeve for limiting the position of the fitting part.

[0006] Optionally, the limiting structure is provided in four sets and is distributed at equal intervals. Each set of limiting structures includes a slide rail fixed to the bottom surface of the support frame. The length direction of the slide rail coincides with the radial direction of the lower through hole. A slider is slidably connected to the slide rail. A connecting strip is fixed to the bottom surface of the slider. The end of the connecting strip away from the slider is fixed to the outer wall of the fitting part. A sleeve is fixed to the bottom surface of the slider. A through hole is provided on the bottom surface of the sleeve. A rod is slidably inserted into the through hole. The upper end of the rod passes through the sleeve and is slidably connected to the slider. A disc fixed to the outer wall of the rod is sleeved on the upper end of the inner wall of the sleeve. A spring is sleeved on the lower end of the rod. The two ends of the spring abut against the bottom surface of the disc and the inner wall of the bottom of the sleeve, respectively. A limiting hole is provided at the end of the bottom surface of the slide rail away from the telescopic rubber sleeve. The upper end of the rod can be inserted into the limiting hole.

[0007] Optionally, the observation component includes a window located in the middle of the front and rear side panels of the support frame, with transparent tempered glass nested inside the window. The hydraulic cylinder is fastened to the middle of the top surface of the support frame via a flange, and the flange is fixed to the support frame with bolts.

[0008] Compared with the prior art, the advantages of this utility model are as follows: This invention, through structures such as a telescopic rubber sleeve and a bearing frame, can isolate the piston rod from the steel rolling environment, preventing dust and impurities from adhering to the outside of the piston rod. The limiting structure ensures that it does not move when the hydraulic cylinder is in motion, and ensures that the contact part of the telescopic rubber sleeve is tightly attached to the outer wall of the piston rod. During the extension and retraction of the telescopic rod, impurities on the lower outer wall of the telescopic rod are scraped off. This effectively solves the problem of the piston rod being exposed and easily adhering to impurities, leading to wear of the seals and surface scratches, and ensures the normal operation of the hydraulic cylinder.

[0009] This utility model, through the windows and transparent tempered glass on the front and rear side plates of the support frame, allows maintenance personnel to directly observe the condition of the piston rod's outer wall. Impurities or scratches can be detected in a timely manner without disassembly, facilitating early handling, reducing downtime for maintenance due to piston rod damage, and improving equipment maintenance efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a schematic diagram showing the position of the upper through hole in this utility model.

[0012] Figure 3 This is a schematic diagram showing the position of the bonding part of this utility model.

[0013] Figure 4 This is a schematic diagram of the slider position of this utility model.

[0014] Figure 5 This is a schematic diagram showing the position of the insertion rod in this utility model.

[0015] Reference numerals: 1. Frame; 101. Bottom crossbeam; 102. Support plate; 2. Bearing frame; 201. Upper through hole; 202. Lower through hole; 203. Front side plate; 204. Rear side plate; 205. Window; 3. Hydraulic cylinder; 301. Piston rod; 302. Connecting piece; 4. Transparent tempered glass; 5. Telescopic rubber sleeve; 501. Fitting part; 6. Slide rail; 7. Slider; 8. Connecting strip; 9. Sleeve; 901. Through hole; 10. Insert rod; 11. Disc; 12. Spring; 13. Limiting hole; 14. Protrusion. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Please see Figures 1 to 5 This embodiment provides an adjustable frame 1 for a rolling mill, including two opposing bottom crossbeams 101. Two opposing support plates 102 are fixed to the top of the two bottom crossbeams 101. The crossbeams and support plates 102 constitute the frame 1. A bearing frame 2 is fixed between the upper ends of the two support plates 102. The bearing frame 2 has an inner cavity that extends laterally through it, and the left and right openings of the inner cavity of the bearing frame 2 are respectively sealed by the support plates 102 on the left and right sides.

[0018] The hydraulic cylinder 3 is fastened to the middle of the top surface of the support frame 2 by a flange. Its piston rod 301 passes through the upper through hole 201 opened in the middle of the top surface of the support frame 2, the inner cavity of the support frame 2, and the lower through hole 202 opened in the middle of the bottom surface of the support frame 2, and extends to the bottom of the support frame 2. A connecting piece 302 is fixed on the piston rod 301 of the hydraulic cylinder 3. The connecting piece 302 is used to connect the upper rollers that are slidably installed on the two support plates 102.

[0019] During installation, the piston rod 301 of the hydraulic cylinder 3 is passed through the upper through hole 201 and the lower through hole 202 in sequence. Then, the cylinder body of the hydraulic cylinder 3 is fixed to the bearing frame 2 by bolts through the flange. Then, the upper roll assembly and the connecting piece 302 are connected. Then, the hydraulic cylinder 3 is driven to extend or retract to adjust the distance between the upper roll and the lower roll, thereby achieving the effect of adjusting the rolling pressure.

[0020] Windows 205 are formed in the middle of the front side plate 203 and the rear side plate 204 of the load-bearing frame 2. Transparent tempered glass 4 is nested inside the windows 205, and maintenance personnel can directly observe whether there are impurities or scratches on the outer wall of the piston rod 301 of the hydraulic cylinder 3 through the transparent tempered glass 4.

[0021] A telescopic rubber sleeve 5 is fixed in the middle of the bottom surface of the support frame 2. The telescopic rubber sleeve 5 completely covers the lower through hole 202. The telescopic rubber sleeve 5 is inverted and conical in shape. Its lower end has a sleeve-shaped fitting part 501. The fitting part 501 is tightly attached to the outer wall of the piston rod 301. In this way, the telescopic rubber sleeve 5 and the support frame 2 can isolate the piston rod 301 from the steel rolling plant environment, preventing iron filings, impurities, dust and other particles in the steel rolling environment from adhering to the outer wall of the piston rod 301 and avoiding damage to the piston rod 301.

[0022] In order to ensure that the telescopic rubber sleeve 5 does not retract along with the hydraulic cylinder 3 when it retracts, and to keep its lower end stationary to scrape off impurities from the outer wall of the piston rod 301, it is necessary to limit the contact part 501 of the telescopic rubber sleeve 5. Four sets of limiting structures are set at equal intervals around the telescopic rubber sleeve on the bottom surface of the bearing frame 2.

[0023] Each set of limiting structures includes a slide rail 6 fixed to the bottom surface of the bearing frame 2. The length direction of the slide rail 6 coincides with the radial direction of the lower through hole 202. A slider 7 is slidably connected to the outer wall of the slide rail 6. A connecting strip 8 is fixed to the bottom surface of the slider 7. The end of the connecting strip 8 away from the slider 7 is fixed to the outer wall of the fitting part 501.

[0024] The four connecting strips 8 on the outside of the telescopic rubber sleeve 5 can limit the longitudinal position of the fitting part 501 when the piston rod 301 retracts, ensuring that it will not move upward, thereby ensuring that it can scrape and clean the outer wall of the piston rod 301.

[0025] When it is necessary to disassemble the hydraulic cylinder 3, in order to ensure that the connecting piece 302 can pass smoothly through the telescopic rubber sleeve 5, the fitting part 501 needs to be opened. At this time, the four sliders 7 are pulled in sequence to the side away from the telescopic rubber sleeve 5, which can open the fitting part 501. This ensures that the connecting piece 302 can pass smoothly through the telescopic rubber sleeve 5. However, it is troublesome to keep the four sliders 7 open at the same time. Therefore, after the sliders 7 are opened, the position of the sliders 7 needs to be limited. Therefore, a sleeve 9 is fixed on the bottom surface of the slider 7. A through hole 901 is opened in the middle of the bottom surface of the sleeve 9. The top of the inner cavity of the sleeve 9 is open. A rod 10 is slidably inserted into the through hole 901. The upper end of the rod 10 passes through the sleeve 9 and slides through the hole to connect with the slider 7. The sliding connection is made so that the sliding hole passes through the entire slider 7. A disc 11 is also fitted on the upper end of the inner wall of the sleeve 9. The disc 11 is fixed to the outer wall of the insertion rod 10. A spring 12 is fitted on the lower end of the insertion rod 10. The upper and lower ends of the spring 12 abut against the bottom surface of the disc 11 and the bottom inner wall of the sleeve 9, respectively. Under the action of the spring 12, the upper end of the insertion rod 10 abuts against the bottom surface of the slide rail 6. A limiting hole 13 is opened on the bottom surface of the slide rail 6 away from the telescopic rubber sleeve 5. When the slider 7 is pulled away from the telescopic rubber sleeve 5, until the insertion rod 10 is directly facing the limiting hole 13, the spring 12 pushes the insertion rod 10 to slide up and insert into the limiting hole 13, limiting the slider 7. All sliders 7 are pulled in sequence and limited, thereby opening the fitting part 501.

[0026] After the hydraulic cylinder 3 is installed, pull the protrusion 14 at the bottom of the insert rod 10 to pull the insert rod 10 out of the limiting hole 13, unlock the slider 7, release the slider 7, and the fitting part 501 retracts and fits against the outer wall of the piston rod 301 again to continue protection.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable frame for a rolling mill, comprising a frame (1), characterized in that, The frame (1) is provided with a support frame (2), the support frame (2) has a transversely through inner cavity, the left and right openings of the inner cavity of the support frame (2) are closed by the frame (1), a hydraulic cylinder (3) is installed in the middle of the top surface of the support frame (2), the piston rod (301) of the hydraulic cylinder (3) passes through the upper through hole (201) on the top surface of the support frame (2), the inner cavity of the support frame (2) and the lower through hole (202) on the bottom surface of the support frame (2) and extends to the bottom of the support frame (2); The piston rod (301) is connected to a connector (302) for mounting the upper roller. The bottom of the support frame (2) is provided with a protective component for isolating the piston rod (301) from the external environment. The protective component includes a telescopic rubber sleeve (5) that can be stretched open. The support frame (2) is provided with an observation component for observing the state of the piston rod (301).

2. The adjustable frame for a rolling mill according to claim 1, characterized in that, The frame (1) includes two opposing bottom crossbeams (101), and two opposing support plates (102) are fixed to the top of the two bottom crossbeams (101). The upper ends of the two support plates (102) are fixedly connected to the bearing frame (2), and the two support plates (102) respectively close the left and right openings of the inner cavity of the bearing frame (2).

3. The adjustable frame for a rolling mill according to claim 1, characterized in that, The telescopic rubber sleeve (5) is fixed in the middle of the bottom surface of the bearing frame (2) and is in the shape of an inverted cone. Its lower end is provided with a fitting part (501) in the shape of a sleeve (9) and attached to the outer wall of the piston rod (301). The bottom surface of the bearing frame (2) is provided with a limiting structure around the telescopic rubber sleeve (5) for limiting the position of the fitting part (501).

4. The adjustable frame for a rolling mill according to claim 3, characterized in that, The limiting structure is provided in four groups and is distributed at equal intervals. Each group of limiting structures includes a slide rail (6) fixed on the bottom surface of the bearing frame (2). The length direction of the slide rail (6) coincides with the radial direction of the lower through hole (202). A slider (7) is slidably connected on the slide rail (6). A connecting strip (8) is fixed on the bottom surface of the slider (7). One end of the connecting strip (8) away from the slider (7) is fixed to the outer wall of the fitting part (501).

5. The adjustable frame for a rolling mill according to claim 4, characterized in that, The bottom surface of the slider (7) is fixed with a sleeve (9), and the bottom surface of the sleeve (9) is provided with a through hole (901). A rod (10) is slidably inserted into the through hole (901). The upper end of the rod (10) passes through the sleeve (9) and is slidably connected to the slider (7). A disc (11) fixed to the outer wall of the rod (10) is sleeved on the upper end of the inner wall of the sleeve (9). A spring (12) is sleeved on the lower end of the rod (10). The two ends of the spring (12) respectively abut against the bottom surface of the disc (11) and the bottom inner wall of the sleeve (9). A limiting hole (13) is provided at the end of the bottom surface of the slide rail (6) away from the telescopic rubber sleeve (5). The upper end of the rod (10) can be inserted into the limiting hole (13).

6. The adjustable frame for a rolling mill according to claim 1, characterized in that, The observation component includes a window (205) located in the middle of the front side panel (203) and the rear side panel (204) of the support frame (2), and a transparent tempered glass (4) is nested inside the window (205).

7. The adjustable frame for a rolling mill according to claim 1, characterized in that, The hydraulic cylinder (3) is fastened to the top center of the support frame (2) via a flange, and the flange and the support frame (2) are fixed together by bolts.

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