Lifting cylinder shell and lifting oil cylinder for finish rolling supporting roller

Abstract

The utility model discloses a lifting cylinder shell and a lifting oil cylinder for a finish rolling back-up roll, which comprise a cylinder barrel, a first connecting hole is arranged on the end face of the open end of the cylinder barrel; the cylinder cover is provided with a second connecting hole corresponding to the first connecting hole; the center of the cylinder cover is provided with a through hole allowing the piston rod to penetrate through. The inner wall of the through hole is sequentially provided with a guide belt groove, a first sealing ring groove and a dustproof ring groove from inside to outside. And the circumferential positioning structure is used for realizing circumferential positioning of the cylinder barrel and the cylinder cover. According to the utility model, the circumferential positioning of the cylinder barrel and the cylinder cover is realized by utilizing the circumferential positioning structure, so that during installation, the first connecting hole and the second connecting hole are automatically aligned, manual repeated adjustment and alignment are not needed, a fastener is convenient to install, the first sealing ring is installed by utilizing the first sealing ring groove, and the sealing performance is ensured; a dustproof ring is installed through the dustproof ring groove, the dustproof effect is achieved, and the performance and service life of the oil cylinder are guaranteed; hole positions of the cylinder barrel and the cylinder cover can be conveniently aligned to install fasteners, and the dustproof sealing performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of steel processing, and in particular to a lifting cylinder shell and a lifting oil cylinder for a finishing support roll. Background Art

[0002] Finishing refers to making the material reach high-precision dimensions and shapes through multiple rollings during the steel processing. Support rolls are rolls used on rolling mills to support and guide rolled pieces, and they play a very important role in the finishing process. The lifting oil cylinders of the support rolls on the rolling mill are used to drive the support rolls to lift, so as to drive the support rolls to adjust their heights according to the needs of rolling to adapt to rolled pieces of different thicknesses. However, due to more dust in the steel processing scenario, the lifting oil cylinder is prone to dust ingress and its sealing performance is easily affected. And the housing of the conventional lifting oil cylinder is composed of a cylinder barrel and a cylinder head. Usually, the cylinder barrel and the cylinder head are connected by fasteners, but there are many holes. During installation, the hole positions need to be repeatedly adjusted for alignment, resulting in troublesome assembly. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a lifting cylinder shell for a finishing support roll, which can facilitate the alignment of the hole positions of the cylinder barrel and the cylinder head for installing fasteners, and has good dust-proof sealing performance.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0005] A lifting cylinder shell for a finishing support roll, comprising: a cylinder barrel, one end of which is an open end with an opening, and a first connection hole is provided on the end face of the open end; a cylinder head, which is attached to the end face of the open end of the cylinder barrel and is provided with a second connection hole corresponding to the first connection hole; the first connection hole and the second connection hole are aligned and installed with fasteners to realize the connection and fixation of the cylinder barrel and the cylinder head; a through hole for the piston rod to pass through is provided at the center of the cylinder head, and a guide belt groove, a first sealing ring groove and a dust-proof ring groove are sequentially arranged on the inner wall of the through hole from the inside to the outside. The guide belt groove is used for embedding a guide belt, the first sealing ring groove is used for embedding a first sealing ring, and the dust-proof ring groove is used for embedding a dust-proof ring; a circumferential positioning structure for realizing the circumferential positioning of the cylinder barrel and the cylinder head.

[0006] Further, a reinforcing sleeve is provided at the edge of the cylinder head and sleeved on the peripheral wall of the open end of the cylinder barrel.

[0007] Further, a reinforcing rib is provided between the inner wall of the reinforcing sleeve and the end face of the cylinder head.

[0008] Further, an avoidance notch for avoiding the reinforcing rib is provided at the edge of the open end of the cylinder barrel.

[0009] Further, the width of the avoidance notch is greater than that of the reinforcing rib.

[0010] Furthermore, the circumferential positioning structure includes a positioning insert; the positioning insert is provided on one side of the cylinder head facing the cylinder barrel and is used for embedding into the opening.

[0011] Furthermore, the circumferential positioning structure includes a positioning protrusion and a positioning groove. The positioning protrusion is provided on the end face of the cylinder head facing the cylinder barrel, and the positioning groove is provided on the end face of the open end of the cylinder barrel and is used for the positioning protrusion to be embedded.

[0012] Furthermore, a chamfer is provided on the outer peripheral edge of the end of the positioning insert facing away from the cylinder head.

[0013] Furthermore, a second sealing ring groove is provided on the circumferential wall of the positioning insert, and a second sealing ring is installed in the second sealing ring groove.

[0014] The present utility model also proposes a lifting oil cylinder, which includes a lifting cylinder housing for a finishing support roll.

[0015] The present utility model has the following beneficial effects:

[0016] The circumferential positioning of the cylinder barrel and the cylinder head is realized by using the circumferential positioning structure, so that when installing, the first connection hole and the second connection hole are automatically aligned, and there is no need for manual repeated adjustment and alignment, which is convenient for installing fasteners. Moreover, the guide belt is installed by using the guide belt groove to realize the movable guide of the piston rod, the first sealing ring is installed by using the first sealing ring groove to ensure the sealing performance; the dust-proof ring is installed by using the dust-proof ring groove to achieve the dust-proof effect and ensure the performance and service life of the oil cylinder; this application can facilitate the alignment of the hole positions of the cylinder barrel and the cylinder head to install fasteners, and has good dust-proof and sealing performance.

[0017] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 is a partial cross-sectional view of the present utility model;

[0020] Figure 2 is a partial view of the present utility model in a disassembled state;

[0021] Figure 3 is a schematic structural view of the cylinder head;

[0022] Figure 4 is a cross-sectional view of the cylinder head.

[0023] Legend Explanation:

[0024] Cylinder barrel 100, opening 110, open end 120, first connection hole 121, avoidance notch 122, positioning groove 130;

[0025] Cylinder head 200, second connection hole 210, perforation 220, guiding belt groove 221, first sealing ring groove 222, dust ring groove 223, guiding belt 230, first sealing ring 240, dust ring 250, positioning protrusion 260, reinforcing sleeve 270, reinforcing rib 271, positioning insertion part 280, second sealing ring groove 281, second sealing ring 282. Detailed Implementation Manner

[0026] 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.

[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] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their 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 at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0030] Please refer to Figure 1 and Figure 2 A lifting cylinder housing for a precision rolling support roll provided by a preferred embodiment of the present invention includes a cylinder barrel 100, a cylinder head 200 and a circumferential positioning structure.

[0031] One end of the cylinder barrel 100 is an open end 120 provided with an opening 110, and a first connection hole 121 is provided on the end face of the open end 120; the cylinder head 200 is attached to the end face of the open end 120 of the cylinder barrel 100 and is provided with a second connection hole 210 corresponding to the first connection hole 121; the first connection hole 121 and the second connection hole 210 are aligned and a fastener is installed to realize the connection and fixation of the cylinder barrel 100 and the cylinder head 200. The fastener can specifically be a fastening screw, and the first connection hole 121 is a threaded hole adapted to the fastening screw.

[0032] A perforation 220 for the piston rod to pass through is provided at the center of the cylinder head 200. A guiding belt groove 221, a first sealing ring groove 222, and a dust-proof ring groove 223 are sequentially provided on the inner wall of the perforation 220 from the inside to the outside, that is, the guiding belt groove 221, the first sealing ring groove 222, and the dust-proof ring groove 223 are sequentially arranged in the direction away from the cylinder barrel 100. The guiding belt groove 221 is used for installing a guiding belt 230 to play a role in positioning and guiding the telescopic movement of the piston rod. The first sealing ring groove 222 is used for installing a first sealing ring 240, and the dust-proof ring groove 223 is used for installing a dust-proof ring 250; a circumferential positioning structure is used to realize the circumferential positioning of the cylinder barrel 100 and the cylinder head 200. Both the first sealing ring 240 and the dust-proof ring 250 can be made of rubber material, and the guiding belt 230 can be made of metal material. A design chamfer is provided at the edge of the guiding belt 230 to facilitate installation and reduce scratching of the circumferential wall of the piston rod.

[0033] A lifting cylinder housing for a finishing support roll provided by the present utility model realizes the circumferential positioning of the cylinder barrel 100 and the cylinder head 200 by using the circumferential positioning structure. When installing, the first connection hole 121 and the second connection hole 210 are automatically aligned, and it is not necessary to manually adjust and align repeatedly, which is convenient for installing the fastener. Moreover, the guiding belt 230 is installed in the guiding belt groove 221 to realize the movement guiding of the piston rod, the first sealing ring 240 is installed in the first sealing ring groove 222 to ensure the sealing performance; the dust-proof ring 250 is installed in the dust-proof ring groove 223 to play a dust-proof effect and ensure the performance and service life of the oil cylinder; this application can facilitate the alignment of the holes of the cylinder barrel and the cylinder head to install the fastener, and has good dust-proof and sealing performance.

[0034] It can be understood that multiple first sealing ring grooves 222 and first sealing rings 240 can be provided to achieve a multiple sealing effect. The first sealing ring 240 can be an O-shaped sealing ring.

[0035] It can be understood that as Figure 2 shown, in order to facilitate the arrangement of the first connection hole 121 while reducing the size and weight of the cylinder barrel 100, the position of the cylinder barrel 100 corresponding to the open end 120 is designed in a flared shape, so that the end face of the open end 120 is increased to be sufficient to arrange the first connection hole 121, and at the same time, the diameter of other positions of the cylinder barrel 100 is reduced, making the overall structure lighter.

[0036] Reference Figure 1 、 Figure 3 and Figure 4 In some embodiments of the present utility model, a reinforcing sleeve 270 is provided at the edge of the cylinder head 200 and sleeved on the peripheral wall of the open end 120 of the cylinder barrel 100, so as to reinforce the open end of the cylinder barrel 100. When the open end 120 of the cylinder barrel 100 is subjected to a large oil pressure and has a tendency to expand and deform outward, the reinforcing sleeve 270 can reduce this deformation tendency, thereby further ensuring the sealing performance and structural life.

[0037] Reference Figure 3 and Figure 4 In a further embodiment of the present utility model, a reinforcing rib 271 is provided between the inner wall of the reinforcing sleeve 270 and the end face of the cylinder head 200, so as to improve the structural strength of the reinforcing sleeve 270, thereby better resisting the load and reducing deformation.

[0038] Reference Figure 2 In a further embodiment of the present utility model, an avoidance notch 122 is provided at the edge of the open end 120 of the cylinder barrel 100 to avoid structural interference. Moreover, the embedding of the reinforcing rib 271 into the avoidance notch 122 also has a certain circumferential positioning effect, which is convenient for subsequent hole alignment and installation of fasteners.

[0039] In a further embodiment of the present utility model, the width of the avoidance notch 122 is greater than that of the reinforcing rib 271, so as to avoid the need for the complete alignment of the reinforcing rib 271 and the avoidance notch 122 during installation, improve the smoothness of assembly, and the circumferential precise positioning can be achieved by relying on the circumferential positioning structure. The positioning effect of the avoidance notch 122 and the reinforcing rib 271 is only an auxiliary effect and only needs to achieve a rough positioning effect.

[0040] It can be understood that in order to make the coverage range of the reinforcing rib 271 uniform, a plurality of reinforcing ribs 271 are distributed circumferentially. Correspondingly, a plurality of avoidance notches 122 are also distributed circumferentially.

[0041] Reference Figure 2 and Figure 3 In some embodiments of the present utility model, the circumferential positioning structure includes a positioning insert 280; the positioning insert 280 is provided on the side of the cylinder head 200 facing the cylinder barrel 100 and is used to be inserted into the opening 110, so as to play a centering role. It can be understood that the positioning insert 280 is adapted to the contour of the opening 110, so as to reduce the design gap and improve the sealing effect and positioning effect.

[0042] Reference Figure 2 and Figure 3, in some embodiments of the present utility model, the circumferential positioning structure includes a positioning protrusion 260 and a positioning groove 130. The positioning protrusion 260 is provided on the end face of the cylinder head 200 facing the cylinder barrel 100, and the positioning groove 130 is provided on the end face of the open end 120 of the cylinder barrel 100 and is used for the positioning protrusion 260 to be embedded. By using the positioning protrusion 260 to be embedded in the positioning groove 130 and the positioning insertion part 280 to be embedded in the opening 110, the cylinder head 200 is circumferentially fixed relative to the cylinder barrel 100, so that the cylinder head 200 will not rotate relatively. During installation, when the positioning insertion part 280 is embedded in the opening 110 and the positioning protrusion 260 is embedded in the positioning groove 130, the first connection hole 121 and the second connection hole 210 will be automatically aligned, without the need for manual repeated adjustment and alignment, which is convenient for installing fasteners.

[0043] Refer to Figure 2 and Figure 3 , in some embodiments of the present utility model, a chamfer is provided on the outer peripheral edge of the end of the positioning insertion part 280 facing away from the cylinder head 200 to facilitate embedding in the opening 110 and facilitate assembly.

[0044] Refer to Figure 1 and Figure 4 , in some embodiments of the present utility model, a second sealing ring groove 281 is provided on the circumferential wall of the positioning insertion part 280, and a second sealing ring 282 is installed in the second sealing ring groove 281, so as to ensure the connection sealing performance between the cylinder head 200 and the cylinder barrel 100 and avoid oil leakage.

[0045] The present utility model also provides a lifting oil cylinder, including a lifting cylinder housing for a finishing support roll.

[0046] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lifting cylinder shell for a finishing rolling support roller, characterized in that: include: A cylinder (100), one end of which is an open end (120) provided with an opening (110), and an end surface of the open end (120) is provided with a first connecting hole (121); A cylinder cover (200) is attached to the end surface of the open end (120) of the cylinder barrel (100) and is provided with a second connection hole (210) corresponding to the first connection hole (121); the first connection hole (121) is aligned with the second connection hole (210) and is installed with a fastener to achieve the connection and fixation between the cylinder barrel (100) and the cylinder cover (200); a through hole (220) is provided at the center of the cylinder cover (200) for the piston rod to pass through, and the inner wall of the through hole (220) is provided with a guide belt groove (221), a first sealing ring groove (222) and a dustproof ring groove (223) in sequence from the inside to the outside, the guide belt groove (221) is used to embed the guide belt (230), the first sealing ring groove (222) is used to embed the first sealing ring (240), and the dustproof ring groove (223) is used to embed the dustproof ring (250); The circumferential positioning structure is used to realize the circumferential positioning of the cylinder barrel (100) and the cylinder head (200).

2. The lifting cylinder shell for the finishing support roll according to claim 1 is characterized in that: The edge of the cylinder cover (200) is provided with a reinforcing sleeve (270) sleeved on the peripheral wall of the opening end (120) of the cylinder barrel (100).

3. The lifting cylinder shell for the finishing support roll according to claim 2, characterized in that: A reinforcing rib (271) is provided between the inner wall of the reinforcing sleeve (270) and the end surface of the cylinder cover (200).

4. The lifting cylinder shell for the finishing support roll according to claim 3 is characterized in that: An avoidance notch (122) for avoiding the reinforcing rib (271) is provided at the edge of the opening end (120) of the cylinder barrel (100).

5. The lifting cylinder shell for the finishing support roll according to claim 4, characterized in that: The avoidance gap (122) is wider than the reinforcing rib (271).

6. The lifting cylinder housing for the finishing support roll according to any one of claims 1 to 5, characterized in that: The circumferential positioning structure comprises a positioning embedding portion (280); the positioning embedding portion (280) is arranged on a side of the cylinder cover (200) facing the cylinder barrel (100) and is used to embed into the opening (110).

7. The lifting cylinder housing for the finishing support roll according to claim 6, characterized in that: The circumferential positioning structure comprises a positioning protrusion (260) and a positioning groove (130), wherein the positioning protrusion (260) is arranged on the end surface of the cylinder head (200) facing the cylinder barrel (100), and the positioning groove (130) is arranged on the end surface of the opening end (120) of the cylinder barrel (100) and is used for the positioning protrusion (260) to be embedded.

8. The lifting cylinder housing for the finishing support roll according to claim 6, characterized in that: The outer peripheral edge of the end of the positioning embedded portion (280) facing away from the cylinder cover (200) is provided with a chamfer.

9. The lifting cylinder housing for the finishing support roll according to claim 6, characterized in that: A second sealing ring groove (281) is provided on the peripheral wall of the positioning embedded portion (280), and a second sealing ring (282) is installed in the second sealing ring groove (281).

10. A lifting cylinder, characterized in that: It comprises a lifting cylinder shell for a finishing support roll as described in any one of claims 1 to 9.

Images