CN214391635U

CN214391635U - Optimized dustproof and waterproof structure applied to roll gap adjusting mechanism

Info

Publication number: CN214391635U
Application number: CN202022205968.1U
Authority: CN
Inventors: 任丽琴; 魏迪明
Original assignee: Zhongzhong Science and Technology Tianjin Co Ltd
Current assignee: Zhongzhong Science and Technology Tianjin Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-10-15
Anticipated expiration: 2030-09-30

Abstract

The invention provides an optimized dustproof and waterproof structure applied to a roll gap adjusting mechanism, which comprises a dustproof and waterproof component I for protecting the end part of an end cover; the dustproof cover is a cylindrical cover body with an opening at the bottom, and comprises a top plate arranged at the top and an annular baffle plate which is arranged on the side and is integrally formed with the top plate, a connecting part is arranged at the top of the pull rod, the diameter of the connecting part is smaller than that of the pull rod below the connecting part, an annular supporting surface is formed at the connecting part, a round hole corresponding to the connecting part is formed in the center of the top plate, and the diameter of the round hole is smaller than that of the annular supporting surface; the top plate is fixed on the connecting part through a snap ring arranged on the upper surface of the top plate. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism is a machined part, is wear-resistant and durable, has a good anti-corrosion effect in high-temperature and sewage and dirty oil environments, and can be integrally assembled by an upper part to protect a lower part, so that good protection is realized.

Description

Optimized dustproof and waterproof structure applied to roll gap adjusting mechanism

Technical Field

The invention belongs to the technical field of waterproof structures of rolling mills, and particularly relates to an optimized dustproof and waterproof structure applied to a roll gap adjusting mechanism.

Background

In recent years, in the metallurgical mechanical wire and bar industry, short stress path rolling mills have the advantages of low investment, quick effect, convenient installation and adjustment, easy operation, less rolling waste products, light weight and the like, are popular with steel rolling manufacturers, and the order quantity shows an increasing trend, so that the structural performance and the characteristics of the short stress rolling mills are gradually improved to better meet the requirements of users.

The water-proof and dust-proof design of the short-stress rolling mill is discussed today, firstly, the short-stress rolling mill is known to be composed of five blocks, namely a screw-down device, a roll system assembly, a roll gap adjusting mechanism, an axial adjusting mechanism and a base assembly, and compared with the design technology which is required on the structure and the mechanical property of a basic part, the design technology is mature, and only in the aspects of maintaining the whole product and improving the durability of the product, the design technology is continuously improved to gradually improve equipment so as to improve the competitive advantage of the product on the market.

Therefore, the main research of the pull rod device in the roll gap adjusting mechanism is carried out today. It is known that the environment of a steel mill, and in a rolling mill, a series of sewage and dust generated in the rolling process of a billet, such as oxide skin, hot steam, cooling water, etc., are attached to each corner of the equipment, so that the equipment is a great damage to precision parts. In the case of a pull rod device for adjusting the roll gap, the roll gap is adjusted by driving a rotary pull rod through a pressing device and then generating relative motion with a round nut, and the round nut is respectively fixed with an upper bearing seat and a lower bearing seat through a pin, so that the relative motion of the round nut is the relative motion of the upper bearing seat and the lower bearing seat, and the roll gap is adjusted. However, it is widely reflected in the field that the pull rod device of a short stress rolling mill is easy to permeate sewage, so that the pull rod and the round nut are locked, the upper and lower roller systems cannot adjust the roll gap through the screwdown device, the whole production line is stopped when any rolling mill has the problem, the production yield of the rolling line is greatly influenced by the time spent on replacing the standby machine, and in the case of maintaining the problem, the trapezoidal threads of the pull rod and the trapezoidal threads of the round nut are locked and cannot be disassembled, and the pull rod and the round nut are usually disassembled by adopting destructive means, so that a plurality of spare parts of the pull rod and the round nut are prepared, and the cost is increased invisibly.

The line surface is to the technical scheme of the dustproof and waterproof structure of the existing roll gap adjusting mechanism, and the defects of the dustproof and waterproof structure are analyzed by combining with practical application. Fig. 1 is a schematic structural view of an original pull rod rubber sealing device, wherein the serial number 1 is a pull rod, the serial number 2 is that a dustproof ring is arranged in a serial number 3 compression ring and is arranged on the pull rod together to play a dustproof role. The serial number 4 is the oil blanket, and serial number 5 is the end cover, and the oil blanket is installed in the end cover, has played the effect of grease proofing dirt. Thus, the structure composed of the serial numbers 1 to 5 protects the environment in the cavity and prevents sewage, dirty oil, dust and the like. The serial number 6 is a spring, the serial number 7 is a balance nut, the serial number 8 is a round nut, the serial number 9 is a spherical cushion, and the structure formed by the four parts and the pull rod is a key part for adjusting the roll gap and is also the key point of the protection of the equipment today. The serial number 10 is an upper bearing seat, the serial number 11 is a U-shaped oil seal I, so that the cavity of the upper bearing seat 10 is changed into a closed environment by three protective measures of a serial number 2 dustproof ring, a serial number 4 oil seal and a serial number 11U-shaped oil seal, and the working environment of a pull rod and a round nut part is protected. The serial number 12 is O type sealing washer, serial number 13 is one set, O type sealing washer dress is in 13 sets of one in serial number and is assembled with serial number 1 pull rod, 14 sets of two in serial number, 14 sets of two inboard also have O type sealing washers, 13 sets of one in serial number is arranged in the top of rolling mill supporting seat, 14 sets of two in serial number are arranged in the below of supporting seat, increase the leakproofness between pull rod and supporting seat through the protective sheath of serial number 13 and serial number 14 and the O type sealing washer of inboard, 15 is the bottom suspension bearing, 16 is the U type oil blanket, here also protects serial number 1 pull rod through protective sheath, O type sealing washer, U type oil blanket, prevent that it from being damaged by external environment, prolong its life. However, the whole structure is analyzed by people, all the protection of the people is achieved by using a dustproof ring, an oil seal, a U-shaped oil seal and an O-shaped sealing ring, the protection can play a good role at the beginning and plays a role in water and oil prevention, but the environment of the whole equipment is known, the sealing devices can be fatally damaged by sewage, dirty oil, scale falling off in the rolling process and excessive temperature emitted by steel billets, the service life of the sealing devices is seriously influenced due to permanent damage, the cost of frequent replacement of sealing elements is low, the shutdown replacement is the largest waste, the production is reduced, and the damage is unknown due to the fact that the sealing elements are installed in the equipment, the larger loss is caused, namely, the sewage and dirty oil permeate into cavities of the pull rod and the round nut, and the pull rod and the round nut are locked, the roll gap cannot be adjusted, the spare machine cannot be replaced, the destructive maintenance is realized, the economic loss is conceivable, and therefore improvement is needed.

Disclosure of Invention

In view of the above, in order to overcome the defects in the prior art, the present invention provides an optimized dustproof and waterproof structure applied to a roll gap adjusting mechanism.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

be applied to roll gap adjustment mechanism's optimization type dustproof and waterproof structure, including being used for carrying out the dustproof and waterproof subassembly one that protects to the end cover tip, set up in the pull rod outside

The dustproof and waterproof assembly comprises a dustproof cover and a J-shaped oil seal, the dustproof cover is a cylindrical cover body with an opening at the bottom, and comprises a top plate arranged at the top and an annular baffle plate which is arranged on the side and is integrally formed with the top plate, a connecting part is arranged at the top of the pull rod, the diameter of the connecting part is smaller than that of the pull rod below the connecting part, an annular supporting surface is formed at the connecting part, a round hole corresponding to the connecting part is formed in the center of the top plate, and the diameter of the round hole is smaller than that of the annular supporting surface; the top plate is fixed on the connecting part through a clamping ring arranged on the upper surface of the top plate;

the inner diameter of the annular baffle is larger than the outer diameter of the end cover;

the J-shaped oil seal is arranged on the outer side of the pull rod, an annular groove corresponding to the J-shaped oil seal is formed in the upper surface of the end cover, a pressing ring is correspondingly arranged in the annular groove, and the J-shaped oil seal is fixed in the annular groove through the pressing ring.

Further, the pressing ring and the end cover are fixed through bolts.

Furthermore, a dustproof and waterproof assembly II is arranged between the support seat outside the pull rod and the upper bearing seat;

the dustproof and waterproof component II comprises a first pull rod protection sleeve, the first pull rod protection sleeve is a cylindrical sleeve, the pull rod protection sleeve is sleeved on the outer side of the pull rod, and the upper and lower heights of the first pull rod protection sleeve are greater than the distance between the upper bearing seat and the supporting seat;

the bottom of the first pull rod protecting sleeve is fixedly connected with the supporting sleeve through a bolt, an annular groove corresponding to the first pull rod protecting sleeve is formed in the inner side of the bottom of the upper bearing seat, and the top of the first pull rod protecting sleeve is arranged in the annular groove.

Furthermore, the outer side of the bottom of the first pull rod protection sleeve extends to form a lap joint part, a groove corresponding to the lap joint part is formed in the top of the supporting seat, and the lap joint part is fixed in the groove through a bolt;

the bottom of the first pull rod protection sleeve extends downwards to form a step part, an annular groove corresponding to the step part is formed in the inner side of the supporting seat, a supporting sleeve is further arranged below the step part and is sleeved on the outer side of the pull rod, and the supporting sleeve is fixedly connected with the supporting seat.

Further, a pull rod protecting sleeve II is further arranged between the bottom of the supporting seat and the lower bearing seat, the pull rod protecting sleeve II is sleeved outside the pull rod, and the upper and lower heights of the pull rod protecting sleeve II are larger than the distance between the lower surface of the supporting seat and the upper surface of the lower bearing seat;

the bottom of the pull rod protecting sleeve II is fixedly connected with the lower bearing seat, an annular groove corresponding to the pull rod protecting sleeve II is formed in the bottom of the supporting seat, and the top of the pull rod protecting sleeve is arranged in the annular groove.

Furthermore, an annular concave table corresponding to the bottom of the pull rod protecting sleeve II is formed in the upper surface of the lower bearing seat, and the bottom of the pull rod protecting sleeve II is welded and fixed in the annular concave table.

Compared with the prior art, the optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism has the following advantages:

compared with the existing structure, the optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism is a machined part, is wear-resistant and durable, has good corrosion resistance in high-temperature, sewage and dirty oil environments, is well protected by an upper part and a lower part in the whole assembly, forms a closed working cavity from top to bottom, prevents the infiltration of sewage, dirty oil and oxidized skin residues to the maximum extent in the working area of the pull rod and the round nut, greatly prolongs the service life if scientifically maintaining the J-shaped oil seal at the top end gland, increases the production and use duration of the sealing structure of the pull rod device to the maximum extent, reduces the frequency of replacing spare machines, reduces the number of the spare parts of the precise parts of the pull rod and the round nut, increases the yield and reduces the cost, win-win measure. The steel is widely used in steel mills and is well received.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

fig. 1 is a sectional view of a dustproof and waterproof structure of a conventional roll gap adjusting mechanism according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of an optimized dustproof and waterproof structure according to an embodiment of the present invention.

Description of reference numerals:

1. a pull rod; 2. a dust ring; 3. a gland; 4. oil sealing; 5. an end cap; 6. a spring; 7. a balance nut; 8. pressing down the nut; 9. a spherical pad; 10. an upper bearing seat; 11. a first U-shaped oil seal; 12. an O-shaped sealing ring; 13. sleeving a first sleeve; 14. sleeving a second sleeve; 15. a lower bearing seat; 16. a U-shaped oil seal II; 17; a dust cover; 18. a snap ring; 19. a J-type oil seal; 20. pressing a ring; 21. a first pull rod protecting sleeve; 211. a lap joint section; 22. a support sleeve; 23. a supporting seat; 24. and a second pull rod protecting sleeve.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

As shown in FIG. 2, an optimized dustproof and waterproof structure applied to a roll gap adjusting mechanism comprises a first dustproof and waterproof component for protecting the end part of an end cover 5;

the dustproof and waterproof assembly comprises a dustproof cover 17 and a J-shaped oil seal 19, the dustproof cover 17 is a cylindrical cover body with an opening at the bottom and comprises a top plate arranged at the top and an annular baffle plate which is arranged on the side and is integrally formed with the top plate, a connecting part is arranged at the top of the pull rod 1, the diameter of the connecting part is smaller than that of the pull rod 1 below the connecting part, an annular supporting surface is formed at the connecting part, a round hole corresponding to the connecting part is formed in the center of the top plate, and the diameter of the round hole is smaller than that of the annular supporting surface; the top plate is fixed on the connecting part through a snap ring 18 arranged on the upper surface of the top plate;

the inner diameter of the annular baffle is larger than the outer diameter of the end cover 5;

j type oil blanket 19 sets up in the pull rod 1 outside, and the upper surface of end cover 5 is opened has the annular groove that corresponds with J type oil blanket 19, the annular groove still corresponds and is equipped with clamping ring 20, fixes J type oil blanket 19 in the annular groove through clamping ring 20.

The pressing ring 20 and the end cover 5 are fixed through bolts.

A second dustproof and waterproof component is arranged between the supporting seat 23 and the upper bearing seat;

the dustproof and waterproof component II comprises a pull rod protecting sleeve I13, the pull rod protecting sleeve I13 is a cylindrical sleeve, the pull rod protecting sleeve I13 is sleeved outside the pull rod 1, and the upper height and the lower height of the pull rod protecting sleeve I13 are larger than the distance between the upper bearing seat and the supporting seat 23;

the bottom of the pull rod protecting sleeve I13 is fixedly connected with the supporting sleeve 22 through a bolt, an annular groove corresponding to the pull rod protecting sleeve I13 is formed in the inner side of the bottom of the upper bearing seat, and the top of the pull rod protecting sleeve I13 is arranged in the annular groove.

The outer side of the bottom of the pull rod protecting sleeve I13 extends to form an overlapping part 211, the top of the supporting seat 23 is provided with a groove corresponding to the overlapping part 211, and the overlapping part 211 is fixed in the groove through a bolt;

the bottom of the pull rod protecting sleeve I13 extends downwards to form a step part, an annular groove corresponding to the step part is formed in the inner side of the supporting seat 23, a supporting sleeve 22 is further arranged below the step part, the supporting sleeve 22 is sleeved on the outer side of the pull rod 1, and the supporting sleeve 22 is fixedly connected with the supporting seat 23.

A pull rod protecting sleeve II 14 is further arranged between the bottom of the supporting seat 23 and the lower bearing seat, the pull rod protecting sleeve II 14 is sleeved outside the pull rod 1, and the upper and lower heights of the pull rod protecting sleeve II 14 are larger than the distance between the lower surface of the supporting seat 23 and the upper surface of the lower bearing seat;

the bottom of the pull rod protection sleeve II 14 is fixedly connected with the lower bearing seat, the bottom of the supporting seat 23 is provided with an annular groove corresponding to the pull rod protection sleeve II 14, and the top of the pull rod protection sleeve is arranged in the annular groove.

And an annular concave table corresponding to the bottom of the second pull rod protection sleeve 14 is formed on the upper surface of the lower bearing seat, and the bottom of the second pull rod protection sleeve 14 is welded and fixed in the annular concave table.

Fig. 2 is the dustproof and waterproof structure of the present patent application. J type oil blanket 19 installs in the processing groove of end cover 5, protects it through clamping ring 20, and the dust cover 17 just can block the oxide skin that splashes in the rolling process and sewage, sump oil still have overheated hot steam like this, and after this layer protection, the operational environment of J type oil blanket 19 in clamping ring 20 has also been good a lot relatively, has just so prolonged its life greatly, can be better play waterproof and oil proof effect. The number 6 is a spring 6, the number 7 is a balance nut 7, the number 8 is a pressing nut, the number 9 is a spherical cushion, and the above is also the same as the structure in the prior art and is a key part for adjusting the roll gap. Through an upper bearing seat, an O-shaped sealing ring 12, a pull rod protecting sleeve I13, a supporting sleeve 22, the O-shaped sealing ring 12, a pull rod protecting sleeve II 14 and a lower bearing seat, the structure of the device shows that the pull rod 1 does not have an outer leakage part in the device, the protection of the pull rod 1 is not simple outer wrapping, but compact installation of mechanical components is adopted, wherein O-shaped sealing grooves are machined in the two pull rod protecting sleeves, a working cavity formed by the pull rod 1, the upper bearing seat and the lower bearing seat is sealed through installation of the O-shaped sealing ring 12, the pull rod protecting sleeve II 14 and the lower bearing seat are welded after installation, so that the upper part and the lower part are sealed cavities, mechanical parts are also of an upper structure covering the lower part, particularly the lower bearing seat assembly part, and the problem of disadvantage is solved. Even more undoubtedly, the anti-slip cover added to this structure is a machined part, and its durability is undoubted, so the improvement is very successful.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. The utility model provides a be applied to roll gap adjustment mechanism's optimization type dustproof and waterproof structure which characterized in that: the dustproof and waterproof device comprises a first dustproof and waterproof component for protecting the end part of an end cover, and is arranged on the outer side of a pull rod;

2. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism according to claim 1, is characterized in that: and the compression ring and the end cover are fixed through bolts.

3. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism according to claim 1, is characterized in that: a second dustproof and waterproof component is arranged between the support seat outside the pull rod and the upper bearing seat;

4. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism according to claim 3, wherein: and an O-shaped sealing ring is also arranged on the inner wall of the annular groove corresponding to the first pull rod protecting sleeve.

5. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism according to claim 3, wherein: the outer side of the bottom of the first pull rod protecting sleeve extends to form a lap joint part, the top of the supporting seat is provided with a groove corresponding to the lap joint part, and the lap joint part is fixed in the groove through a bolt;

6. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism is characterized in that: a pull rod protecting sleeve II is further arranged between the bottom of the supporting seat and the lower bearing seat, the pull rod protecting sleeve II is sleeved outside the pull rod, and the upper and lower heights of the pull rod protecting sleeve II are larger than the distance between the lower surface of the supporting seat and the upper surface of the lower bearing seat;

7. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism according to claim 6, is characterized in that: and the upper surface of the lower bearing seat is provided with an annular concave table corresponding to the bottom of the pull rod protecting sleeve II, and the bottom of the pull rod protecting sleeve II is welded and fixed in the annular concave table.

8. The optimized dustproof and waterproof structure applied to the roll gap adjusting mechanism is characterized in that: and an O-shaped sealing ring is also arranged on the inner wall of the annular groove corresponding to the pull rod protecting sleeve II.