CN218348133U

CN218348133U - Rolling mill screwdown oil return device

Info

Publication number: CN218348133U
Application number: CN202222496759.6U
Authority: CN
Inventors: 夏志彬
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-20
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses a rolling mill screwdown oil return device, which comprises an oil return main pipe, wherein a first connecting flange is arranged above the oil return main pipe, a second connecting flange is arranged above the first connecting flange, an oil return branch pipe is arranged above the second connecting flange, and a screwdown driving device body is arranged on the right side of the oil return branch pipe; the spacer ring is arranged on the inner wall of the second connecting flange, two threaded holes are formed in the second connecting flange, and mounting bolts are arranged in the threaded holes in a threaded manner; and the fixing ring is fixedly installed on the outer surface of the second connecting flange, and a limiting hole is formed in the fixing ring. The rolling mill screwdown oil return device moves and stretches in the oil return main pipe through the oil return branch pipe, so that the oil return branch pipe moves up and down along with the screwdown driving device body, the phenomenon that a pipeline is bent to cause unsmooth oil return is avoided, and the assembly joint surface of the screwdown driving device often leaks oil to influence the working efficiency of the rolling mill.

Description

Rolling mill screwdown oil return device

Technical Field

The utility model relates to a rolling mill pushes down oil returning device hydraulic pressure lubrication technical field specifically is a rolling mill pushes down oil returning device.

Background

In steel rolling and iron and steel enterprises, a rolling mill is indispensable equipment for realizing a metal rolling process, and can be divided into two rollers, four rollers, six rollers, eight rollers, twelve rollers, eighteen rollers and the like according to the number of rollers; the precision rolling mill can be divided into an L shape, a T shape, an F shape, a Z shape and an S shape according to the arrangement mode of the rollers, the common rolling mill mainly comprises the rollers, a frame, a roller spacing adjusting device, a roller temperature adjusting device, a transmission device, a lubricating system, a control system, a roller disassembling device and the like, and the precision rolling mill is additionally provided with a device for ensuring the rolling precision besides main parts and devices of the common rolling mill.

The existing rolling mill screwdown oil return device moves up and down along with the rolling mill screwdown device, a screwdown oil return pipeline arranged on the rolling mill screwdown oil return device is stressed greatly when moving along with the rolling mill screwdown oil return pipeline, so that oil return is not smooth, an assembly joint surface of the screwdown device leaks oil frequently, production is stopped frequently to treat oil leakage defects, and working efficiency is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil return device is pressed down to rolling mill to it reciprocates along with rolling mill screwdown to propose current rolling mill screwdown oil return device in solving above-mentioned background art, install that it is great to push down oil return pipeline when following the removal, the pipeline often appears and bends, leads to the oil return not unblocked, and screwdown assembly faying face is oil leak often, and oil leak defect is handled in often stopping production, influences work efficiency's problem.

In order to achieve the above object, the utility model provides a following technical scheme: a rolling mill screwdown oil return device comprises an oil return main pipe, wherein a first connecting flange is arranged above the oil return main pipe, a second connecting flange is arranged above the first connecting flange, an oil return branch pipe is arranged above the second connecting flange, and a screwdown driving device body is arranged on the right side of the oil return branch pipe;

the spacer ring is installed on the inner wall of the second connecting flange, two threaded holes are formed in the second connecting flange, and mounting bolts are installed on the inner threads of the threaded holes.

Preferably, the oil return branch pipe runs through in second flange, spacer ring, first flange and the inside that the oil return was responsible for in proper order, and the oil return branch pipe realizes removing in the inside that second flange, spacer ring, first flange and oil return were responsible for to the oil return is responsible for and is realized the intercommunication with the oil return branch pipe, and the diameter size of oil return branch pipe is less than the diameter size that the oil return was responsible for simultaneously.

Preferably, the second connecting flange is in bolt connection with the first connecting flange through a threaded hole, and the first connecting flange is in threaded connection with the oil return main pipe through a threaded hole.

Preferably, the diameter size of the oil return branch pipe is matched with the diameter size of the inside of the spacer ring, and the diameter size of the spacer ring is matched with the diameter size of the inside of the second connecting flange.

Preferably, the second connecting flange is further provided with:

the fixed ring is fixedly mounted on the outer surface of the second connecting flange, a limiting hole is formed in the fixed ring, a limiting rod is arranged in the limiting hole in a penetrating mode, a fixed plate is fixedly mounted on the upper portion of the limiting rod, a connecting rod is fixedly mounted on the upper portion of the fixed plate, a limiting ring is fixedly mounted on the lower portion of the limiting rod, and a threaded rod is mounted on the inner thread of the limiting ring.

Preferably, the fixed plate is fixedly connected with the oil return branch pipe, and the connecting rod is fixedly connected with the pressing driving device body.

Preferably, the diameter size of the limiting rod is identical with the diameter size of the inner part of the limiting hole, the limiting rod moves inside the limiting hole, the limiting rod is fixedly connected with the threaded rod, and the diameter size of the limiting ring is larger than that of the limiting rod.

Compared with the prior art, the utility model provides an oil return device is pushed down to rolling mill possesses following beneficial effect: the rolling mill screwdown oil return device moves and stretches in the oil return main pipe through the oil return branch pipe, so that the oil return branch pipe moves up and down along with the screwdown driving device body, the phenomenon that a pipeline is bent to cause unsmooth oil return is avoided, and the assembly joint surface of the screwdown driving device often leaks oil to influence the working efficiency of the rolling mill.

1. The oil return branch pipe moves and stretches in the oil return main pipe, so that the oil return branch pipe moves up and down along with the pressing-down driving device body, the pipeline is prevented from being bent, the oil return is not smooth, and the assembling joint surface of the pressing-down device often leaks oil to influence the working efficiency of the rolling mill;

2. the utility model discloses a solid fixed ring, fixed plate, connecting rod, gag lever post and spacing hole drive the oil return branch pipe and remove to carry on spacingly to the removal orbit of oil return branch pipe, reduce the oil return branch pipe and receive power, avoid the oil return to be responsible for and the too big oil return of causing of junction atress of oil return branch pipe and be responsible for or the oil return branch pipe damages.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the structure of the main oil return pipe and the branch oil return pipe of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2 according to the present invention;

fig. 4 is an external structure schematic diagram of the limiting rod of the present invention.

In the figure: 1. an oil return main pipe; 2. a first connecting flange; 3. a fixing ring; 4. a second connecting flange; 5. a fixing plate; 6. a connecting rod; 7. an oil return branch pipe; 8. pressing down the driving device body; 9. a limiting rod; 10. a spacer ring; 11. installing a bolt; 12. a limiting hole; 13. a threaded hole; 14. a limiting ring; 15. a threaded rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a rolling mill screwdown oil return device comprises an oil return main pipe 1, a first connecting flange 2 is mounted above the oil return main pipe 1, a second connecting flange 4 is mounted above the first connecting flange 2, an oil return branch pipe 7 is mounted above the second connecting flange 4, and a screwdown driving device body 8 is mounted on the right side of the oil return branch pipe 7; a spacer ring 10 installed on an inner wall of the second coupling flange 4; the oil return branch pipe 7 sequentially penetrates through the second connecting flange 4, the spacer ring 10, the first connecting flange 2 and the oil return main pipe 1, the oil return branch pipe 7 moves inside the second connecting flange 4, the spacer ring 10, the first connecting flange 2 and the oil return main pipe 1, the oil return main pipe 1 is communicated with the oil return branch pipe 7, and meanwhile the diameter of the oil return branch pipe 7 is smaller than that of the oil return main pipe 1; the diameter size of the oil return branch pipe 7 is matched with the diameter size of the inside of the spacer ring 10, the diameter size of the spacer ring 10 is matched with the diameter size of the inside of the second connecting flange 4, and two threaded holes 13 are formed in the inside of the second connecting flange 4; the second connecting flange 4 is in bolted connection with the first connecting flange 2 through a threaded hole 13, the first connecting flange 2 is in threaded connection with the oil return main pipe 1 through the threaded hole 13, and a mounting bolt 11 is installed in the threaded hole 13 through internal threads; the oil return branch pipe 7 moves and stretches in the oil return main pipe 1, so that the oil return branch pipe 7 moves up and down along with the pressing driving device body 8, the phenomenon that the oil return is not smooth due to the fact that a pipeline is bent is avoided, and the assembly joint surface of the pressing device often leaks oil to affect the working efficiency of a rolling mill.

Referring to fig. 1, 3 and 4, a rolling mill screwdown oil return device includes a fixing ring 3 fixedly mounted on an outer surface of a second connecting flange 4, the fixing ring 3 is provided with a limiting hole 12 therein, a limiting rod 9 is inserted into the limiting hole 12, a fixing plate 5 is fixedly mounted above the limiting rod 9, and a connecting rod 6 is fixedly mounted above the fixing plate 5; the fixing plate 5 is fixedly connected with the oil return branch pipe 7, the connecting rod 6 is fixedly connected with the screw-down driving device body 8, a limiting ring 14 is fixedly arranged below the limiting rod 9, and a threaded rod 15 is arranged in the limiting ring 14 in a threaded manner; the diameter size of the limiting rod 9 is matched with the diameter size inside the limiting hole 12, the limiting rod 9 moves inside the limiting hole 12, the limiting rod 9 is fixedly connected with the threaded rod 15, and the diameter size of the limiting ring 14 is larger than that of the limiting rod 9; the oil return branch pipe 7 is driven to move through the fixing ring 3, the fixing plate 5, the connecting rod 6, the limiting rod 9 and the limiting hole 12, the moving track of the oil return branch pipe 7 is limited, the stress on the oil return branch pipe 7 is reduced, and the damage to the oil return main pipe 1 or the oil return branch pipe 7 caused by the fact that the stress on the joint of the oil return main pipe 1 and the oil return branch pipe 7 is too large is avoided.

The working principle is as follows: when the rolling mill is used for pressing down the oil return device, firstly, when the pressing down driving device body 8 is pressed down, the pressing down driving device body 8 drives the fixing plate 5 to move downwards under the limit of the limit rod 9 and the limit hole 12 through the connecting rod 6, and further drives the oil return branch pipe 7 to move inside the oil return main pipe 1 under the guide of the second connecting flange 4, the spacer ring 10 and the first connecting flange 2, at the moment, oil inside the oil return branch pipe 7 flows into the oil return main pipe 1, the phenomenon that oil return flow is not smooth is improved, meanwhile, the oil flow direction flows into the oil return main pipe 1 from the upper oil return branch pipe 7 during oil return, the oil flow speed inside the oil return branch pipe 7 depends on self-weight oil return due to no pressure of oil return, the diameter of the oil return main pipe 1 is larger than that of the oil return branch pipe 7, the phenomenon that the oil return main pipe 1 is full of the oil return main pipe 1 through the sealing surfaces of the first connecting flange 2 and the second connecting flange 4 cannot occur, and secondly, the limit ring 14 plays a limiting role in preventing the limit rod 9 from withdrawing from the limit hole 12.

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

Claims

1. A rolling mill screwdown oil return device is characterized by comprising:

the oil return device is characterized by comprising an oil return main pipe (1), wherein a first connecting flange (2) is installed above the oil return main pipe (1), a second connecting flange (4) is installed above the first connecting flange (2), an oil return branch pipe (7) is installed above the second connecting flange (4), and a pressing-down driving device body (8) is installed on the right side of the oil return branch pipe (7);

the spacer ring (10) is mounted on the inner wall of the second connecting flange (4), two threaded holes (13) are formed in the second connecting flange (4), and mounting bolts (11) are mounted on the inner threads of the threaded holes (13).

2. The rolling mill screwdown oil return device according to claim 1, wherein the oil return branch pipe (7) sequentially penetrates through the second connecting flange (4), the spacer ring (10), the first connecting flange (2) and the inside of the oil return main pipe (1), the oil return branch pipe (7) moves inside the second connecting flange (4), the spacer ring (10), the first connecting flange (2) and the oil return main pipe (1), the oil return main pipe (1) is communicated with the oil return branch pipe (7), and the diameter of the oil return branch pipe (7) is smaller than that of the oil return main pipe (1).

3. The rolling mill screwdown oil returning device of claim 1, wherein the second connecting flange (4) is in bolt connection with the first connecting flange (2) through a threaded hole (13), and the first connecting flange (2) is in threaded connection with the oil returning main pipe (1) through the threaded hole (13).

4. A rolling mill screwdown oil return device according to claim 1, wherein the diameter of the oil return branch pipe (7) is matched with the diameter of the inside of the spacer ring (10), and the diameter of the spacer ring (10) is matched with the diameter of the inside of the second connecting flange (4).

5. Rolling mill screwdown oil return device according to claim 1, characterized in that said second connecting flange (4) is further provided with:

fixed ring (3), its fixed mounting be in the surface of second flange (4), spacing hole (12) have been seted up to the inside of fixed ring (3), gag lever post (9) are worn to be equipped with in the inside of spacing hole (12), the top fixed mounting of gag lever post (9) has fixed plate (5), the top fixed mounting of fixed plate (5) has connecting rod (6), the below fixed mounting of gag lever post (9) has spacing ring (14), threaded rod (15) are installed to the internal thread of spacing ring (14).

6. A rolling mill screwdown oil return device according to claim 5, wherein the fixed plate (5) is fixedly connected with the oil return branch pipe (7), and the connecting rod (6) is fixedly connected with the screwdown driving device body (8).

7. The rolling mill screwdown oil return device according to claim 5, wherein the diameter of the limiting rod (9) is matched with the diameter inside the limiting hole (12), the limiting rod (9) moves inside the limiting hole (12), the limiting rod (9) is fixedly connected with the threaded rod (15), and the diameter of the limiting ring (14) is larger than the diameter of the limiting rod (9).