Auxiliary dismounting tool for locking hydraulic oil cylinder of rolling mill

Abstract

The utility model provides an auxiliary dismounting tool for a locking hydraulic oil cylinder of a rolling mill, which is characterized in that the auxiliary dismounting tool is used for clamping an end cover and a cylinder body of the hydraulic oil cylinder and comprises an upper clamping plate and a lower clamping plate, the upper clamping plate is used for abutting against the end cover of the hydraulic oil cylinder, and the surface of the upper clamping plate is provided with a plurality of avoiding parts used for exposing bolt holes in the end cover when abutting against the end cover; the lower clamping plate is used for abutting against a hydraulic oil cylinder body. The upper clamping plate and the lower clamping plate are connected through a plurality of fasteners. The auxiliary disassembling and assembling tool can assist in clamping the end cover and the cylinder body when the hydraulic oil cylinder is disassembled and assembled, and inconvenience in operation or safety accidents caused by overlarge elastic force of a spring in the cylinder are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of dismounting tool, specifically relates to a rolling mill locking hydraulic cylinder auxiliary dismounting tool. BACKGROUND

[0002] The rough and medium rolling mill unit of the section steel rolling mill needs to bear the rolling pressure of hundreds of tons, and needs to go through the harsh environment of splashing iron oxide chips and splashing rolling mill cooling water during the rolling process. Thus, the combined contact parts of the rolling mill are prone to jamming and rusting, and need to be regularly maintained. For example, the upper and lower roller bearing parts of the φ850mm portal type rolling mill are connected and fastened by using a cylinder body structure. As shown in the figure, the locking cylinder body is a hydraulic cylinder, and the end cover is connected with the cylinder body by 8 bolts; a φ10mm spiral spring is arranged in the cylinder body to provide pressure for the hydraulic cylinder body. Because the spring force is too large, it is difficult to press to overcome the cylinder body during dismounting by relying on human power alone; not only is dismounting difficult, but safety accidents are also prone to occur. Figure 3

[0003] At present, some methods use a puller tool to assist in pressing the cylinder body, but the puller claw of the conventional puller needs a certain operating space; when the hydraulic cylinder is still connected to the rolling mill, the conventional puller tool is difficult to use due to the small gap between the cylinder body and the surrounding environment. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a rolling mill locking hydraulic cylinder auxiliary dismounting tool to solve the problem of dismounting difficulty caused by the spring force during dismounting of the related hydraulic cylinder.

[0005] The utility model achieves the above technical purpose through the following technical means.

[0006] A rolling mill locking hydraulic cylinder auxiliary dismounting tool is characterized by being used for clamping the end cover and the cylinder body of the hydraulic cylinder, and comprising:

[0007] An upper clamping plate is used for abutting against the end cover of the hydraulic cylinder, and a plurality of avoiding portions are formed on the surface of the upper clamping plate to expose the bolt holes on the end cover when abutting against the end cover;

[0008] A lower clamping plate is used for abutting against the cylinder body of the hydraulic cylinder.

[0009] The upper clamping plate and the lower clamping plate are connected by a plurality of fasteners.

[0010] Further, a sleeve hole is arranged on the surface of the upper clamping plate, a plurality of clamping portions are arranged around the inner circle of the sleeve hole, and the clamping portions are used for clamping and positioning the column body protruding from the top of the end cover together with the avoiding portions.

[0011] Further, the clamping portions and the avoiding portions are uniformly arranged along the inner circle of the sleeve hole.​

[0012] Further, the clamping portions and the avoiding portions are each provided with four, and are arranged at intervals between the two.

[0013] Further, the surface of the lower clamping plate is provided with a clamping groove for clamping the protruding column of the bottom of the cylinder body.

[0014] Further, the fastener is a threaded fastener, including a locking bolt and a locking nut.

[0015] Further, the upper clamping plate and the lower clamping plate are provided with two groups of through holes on the surface for stringing the locking bolt.

[0016] Further, the threaded fastener is located on both sides of the upper clamping plate and the lower clamping plate.

[0017] The beneficial effects of the utility model are:

[0018] (1) the utility model provides a rolling mill locking hydraulic oil cylinder auxiliary dismounting tool, can when dismounting hydraulic oil cylinder, auxiliary clamping end cover and cylinder body, avoid the operation inconvenience or safety accident caused by the excessive elastic force of spring in the cylinder, wherein the avoiding portion for avoiding end cover bolt hole is set on the surface of the upper clamping plate, and the dismounting or installation of end cover bolt is facilitated.

[0019] (2) in the utility model, the sleeve hole for sleeving the protruding column of the top of the end cover is set on the surface of the upper clamping plate, and the clamping portion and the avoiding portion are set in the sleeve hole, the relative positioning between the upper clamping plate and the end cover is realized by the clamping portion, and the connection stability between the upper clamping plate and the end cover is guaranteed.

[0020] (3) in the utility model, the clamping groove is set on the lower clamping plate, on the one hand, positioning is achieved, so that the lower clamping plate and the cylinder body are connected stably, and on the other hand, the lower clamping plate is inserted from the connecting gap between the bottom of the cylinder body and the rolling mill body, and the problem of small operation space is overcome. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the dismounting tool structure diagram of the utility model;

[0022] Figure 2 It is the dismounting tool plan view of the utility model;

[0023] Figure 3 It is the structure diagram of the rolling mill locking hydraulic oil cylinder;

[0024] Figure 4 It is the dismounting tool use state schematic diagram of the utility model;

[0025] Figure 5 It is the dismounting tool use state plan view direction schematic diagram of the utility model.

[0026] Figure label:

[0027] 1-Upper clamping plate; 11-Sleeve hole; 12-Clamping part; 13-Allowing part;

[0028] 2-Lower clamping plate; 21-Slot; 3-Locking bolt; 31-Locking nut;

[0029] 4-Cylinder block; 41-End cap; 42-Lower column; 43-Upper column. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein similar or identical reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] like Figure 1 The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder shown includes an upper clamping plate 1 and a lower clamping plate 2, which are connected and locked together by two bolt fasteners. The bolt fasteners include locking bolts 3 and locking nuts 31. Two sets of through holes are provided on the upper clamping plate 1 and the lower clamping plate 2, and each set of through holes is connected in series by the locking bolts 3. Locking nuts are connected to the ends of the locking bolts 3. The distance between the upper clamping plate 1 and the lower clamping plate 2 is adjusted by turning the locking nuts 31 to achieve the clamping and locking function.

[0032] Combination Figure 1 and Figure 2 As shown, the lower clamping plate 2 has a slot 21 for engaging a cylinder, and the slot 21 is located between the two locking bolts 3. The upper clamping plate 1 has a sleeve hole 11, which is located between the two bolts 3. Four clamping parts 12 and four clearance parts 13 are arranged around the inner circle of the sleeve hole 11, with the clamping parts 12 and clearance parts 13 arranged in pairs at intervals.

[0033] Reference Figure 3 As shown, the rolling mill locking hydraulic cylinder includes a cylinder body 4 as the main body, a lower column 42 at the lower end of the cylinder body 4, and a detachable end cover 41 connected to the top of the cylinder body 4. The end cover 41 and the cylinder body 4 are connected and fastened by eight bolts evenly arranged in the circumferential direction. An upwardly protruding upper column 43 is provided on the top of the end cover 41.

[0034] like Figure 4 and Figure 5As shown, in use, the lower clamping plate 2 is clamped to the lower column body 42 at the bottom of the cylinder body 4 through the clamping groove 21, and the upper clamping plate 1 is pressed against the end cover 41 from above; wherein the sleeve hole 11 of the upper clamping plate 1 is sleeved on the upper column body 43, and the upper column body 43 is clamped and positioned by the four clamping portions 12, and meanwhile, the four bolt holes at the top of the end cover 41 are exposed by the avoiding portions 13.

[0035] When the hydraulic cylinder is disassembled, the bolts at the top of the end cover 41 except those exposed by the avoiding portions 13 are first removed, then the auxiliary disassembly tool is assembled on the hydraulic cylinder in the above-mentioned manner, the upper clamping plate 1 and the lower clamping plate 2 are clamped tightly to the end cover 41 and the cylinder body 4 by the two sets of locking bolts 3 and locking nuts 31, and in this case, the bolts exposed by the avoiding portions 13 are removed, and finally, the hydraulic cylinder is disassembled by loosening the locking bolts 3 and locking nuts 31.

[0036] When the hydraulic cylinder is assembled, the process is opposite to the disassembly, that is, the auxiliary disassembly tool is first assembled to ensure that the end cover 41 can be stably pressed on the cylinder body 4, in this case, the bolts at the part of the end cover 41 are installed by the avoiding portions 13, and finally, the remaining bolts at the end cover 41 are installed after the auxiliary disassembly tool is removed.

[0037] In the above-mentioned disassembly and assembly processes, the auxiliary disassembly tool is used to limit the relative position between the end cover 41 and the cylinder body 4, so as to avoid the inconvenience or safety accidents caused by the spring force in the cylinder body 4.

[0038] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0039] The present application is not limited to the above-mentioned embodiments, and any obvious improvements, replacements or modifications made by those skilled in the art without departing from the essential content of the present application shall fall within the protection scope of the present application.

Claims

1. An auxiliary tool for disassembling and assembling a rolling mill locking hydraulic cylinder, characterized in that: The end cap and cylinder body for clamping a hydraulic cylinder include: The upper clamp (1) is used to abut against the end cover of the hydraulic cylinder. Several clearance parts (13) are provided on the surface to expose the bolt holes on the end cover when abutting against the end cover. The lower clamping plate (2) is used to abut against the cylinder body of the hydraulic cylinder; The upper clamping plate (1) and the lower clamping plate (2) are connected by several fasteners.

2. The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder according to claim 1, characterized in that: The upper clamping plate (1) has a sleeve hole (11) on its surface. A plurality of clamping parts (12) and the avoidance parts (13) are arranged around the inner circle of the sleeve hole (11). The clamping parts (12) are used to clamp and position the column protruding from the top of the end cap.

3. The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder according to claim 2, characterized in that: The clamping part (12) and the avoidance part (13) are evenly arranged along the inner circle of the sleeve hole (11).

4. The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder according to claim 3, characterized in that: The clamping part (12) and the avoidance part (13) are each provided in fours, and are arranged at intervals between them.

5. The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder according to claim 1, characterized in that: The lower clamping plate (2) has a groove (21) on its surface to engage the protruding column at the bottom of the cylinder.

6. The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder according to claim 1, characterized in that: The fasteners are threaded fasteners, including locking bolts (3) and locking nuts (31).

7. The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder according to claim 6, characterized in that: The upper clamping plate (1) and the lower clamping plate (2) have two sets of through holes on their surfaces for connecting the locking bolts (3).

8. The auxiliary disassembly and assembly tool for the rolling mill locking hydraulic cylinder according to claim 7, characterized in that: The threaded fasteners are located on both sides of the upper clamping plate (1) and the lower clamping plate (2).

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