Water inflow prevention mechanism for pull rod of rolling mill

Abstract

The utility model discloses a rolling mill pull rod waterproof mechanism which comprises a pull rod, an upper sheath, a lower sheath, an upper fixing ring and a lower fixing ring, the pull rod is used for adjusting the distance between two press rollers of a rolling mill, the two press rollers are arranged on an upper bearing seat and a lower bearing seat, a first ring groove is formed in the position, matched with the upper sheath, of the upper bearing seat, and a second ring groove is formed in the position, matched with the lower sheath, of the lower bearing seat. A first annular groove is formed in the lower fixing ring, an upper sealing ring is arranged in the first annular groove, a second annular groove is formed in the portion, matched with the lower protective sleeve, of the lower fixing ring, a lower sealing ring is arranged in the second annular groove, a third annular groove is formed in the portion, matched with the lower bearing seat, of the bottom of the lower protective sleeve, and an O-shaped ring is arranged in the third annular groove. According to the pull rod waterproof mechanism, the problem that the pull rod is corroded by cooling water is effectively solved, the service life of the pull rod is prolonged, the equipment maintenance cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metallurgical equipment auxiliary machine technical field, especially related to a mill pull rod anti -water mechanism. BACKGROUND

[0002] As the key equipment on the bar continuous rolling line, the mill rack pull rod plays a vital role in the rolling process, and a large amount of water cooling is required in the mill production process. At present, there is no waterproofing or only simple waterproofing between the pull rod and the support seat, the waterproofing effect is poor, which leads to the entry of cooling water into the gap between the pull rod and the bearing seat of the compression roller, the pull rod is prone to corrosion, the pull rod fails frequently, and frequent shutdown and replacement of spare parts are caused, which affects the production efficiency and increases the maintenance cost. SUMMARY

[0003] In order to solve the above problems, the utility model provides a mill pull rod anti -water mechanism.

[0004] The utility model is realized as follows: a mill pull rod anti -water mechanism, including the pull rod, the pull rod is used for adjusting the distance between two compression rollers of the mill, two compression rollers are arranged on the upper and lower bearing seats, the upper and lower bearing seats are provided with through holes for the pull rod to pass through, the upper and lower ends of the pull rod are provided with upper and lower protective covers, the pull rod is sleeved with a damping spring in the upper and lower protective covers, a nut is arranged on the upper bearing seat and connected with the pull rod, the nut and the pull rod form a lead screw structure, the height position of the upper compression roller is adjusted through the lead screw structure on the pull rod, when the height of the upper compression roller needs to be adjusted, the pull rod is rotated, the pull rod and the nut move relatively, the nut is clamped in the upper bearing seat, and the upper bearing seat is pushed up and down to adjust the height of the upper compression roller.

[0005] The pull rod below the lead screw structure is provided with an upper sleeve, the pull rod is matched with the upper bearing seat through the upper sleeve, the upper sleeve is fixedly connected with an upper fixed ring, the lower side of the upper fixed ring is provided with a lower fixed ring, a lower sleeve is arranged in the lower fixed ring, the lower sleeve is fixedly connected with the lower bearing seat, the inner diameters of the upper sleeve and the lower sleeve are same and slightly larger than the outer diameter of the pull rod, the part, where the upper bearing seat is matched with the upper sleeve, is provided with a first ring groove, an upper sealing ring is arranged in the first ring groove, the part, where the lower fixed ring is matched with the lower sleeve, is provided with a second ring groove, a lower sealing ring is arranged in the second ring groove, and the part, where the lower sleeve bottom is matched with the lower bearing seat, is provided with a third ring groove, and an O-shaped ring is arranged in the third ring groove.

[0006] The working principle is as follows: When the rolling mill is working, a large amount of cooling water needs to be introduced into the support surface of the rolling mill and the rolled workpiece. If no waterproof mechanism is set, the cooling water may directly enter the interior of the tie rod, causing the tie rod to be easily corroded, thus affecting its use. The tie rod waterproof mechanism disclosed in this utility model is provided with an upper sheath at the part where the upper bearing seat and the tie rod meet, a lower sheath and a lower fixing ring at the part where the lower bearing seat and the tie rod meet, an upper sealing ring and a lower sealing ring on the outer diameter surface of the upper and lower sheaths, and an O-ring at the bottom of the lower sheath, thereby preventing cooling water from entering the interior of the tie rod and avoiding the problem of tie rod corrosion.

[0007] A fourth annular groove is provided at the location where the upper bearing housing mates with the upper sheath, and an upper dustproof ring is disposed within the fourth annular groove. A fifth annular groove is provided at the location where the lower fixing ring mates with the lower sheath, and a lower dustproof ring is disposed within the fifth annular groove. The fourth annular groove is located below the first annular groove, and the fifth annular groove is located below the second annular groove. By providing upper and lower dustproof rings, the sealing effect is further improved. Cooling water must pass through the upper and lower dustproof rings before reaching them, reducing the sealing pressure at the upper and lower sealing rings, thereby improving the sealing effect.

[0008] The contact surfaces of the upper fixing ring and the upper sheath fit together tightly, and the contact surfaces of the upper fixing ring and the lower fixing ring fit together tightly, thereby improving the water discharge effect.

[0009] An upper bushing is provided between the upper fixing ring and the upper sheath, and a lower bushing is provided between the upper fixing ring and the lower fixing ring. The upper bushing fits tightly with both the upper fixing ring and the upper sheath, and the lower bushing fits tightly with both the upper fixing ring and the lower fixing ring. The use of upper and lower bushings further improves the water discharge effect.

[0010] The beneficial effects of this utility model are as follows: 1. By setting an upper sheath at the joint between the upper bearing seat and the tie rod, and setting a lower sheath and a lower fixing ring at the joint between the lower bearing seat and the tie rod, and setting an upper sealing ring and a lower sealing ring on the outer diameter surfaces of the upper and lower sheaths, and setting an O-ring at the bottom of the lower sheath, cooling water is prevented from entering the tie rod, thus avoiding corrosion of the tie rod; 2. The sealing effect is further improved by setting upper and lower dustproof rings; 3. The contact surfaces of the upper fixing ring and the upper sheath are tightly fitted, and the contact surfaces of the upper fixing ring and the lower fixing ring are tightly fitted. By setting upper and lower bushings, the waterproof effect is further improved. The tie rod waterproofing mechanism disclosed in this utility model effectively improves the problem of tie rod corrosion by cooling water, increases the service life of the tie rod, reduces equipment maintenance costs, and improves production efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the rolling mill of this utility model;

[0012] Figure 2 This is a schematic diagram of the water-proof structure of this utility model;

[0013] In the diagram, 1-pull rod, 2-upper sealing ring, 3-upper dustproof ring, 4-upper protective sleeve, 5-lower protective sleeve, 6-lower sealing ring, 7-lower dustproof ring, 8-O-ring, 9-pressure roller, 10-upper bearing seat, 11-lower bearing seat, 12-upper protective cover, 13-lower protective cover, 14-shock-absorbing spring, 15-nut, 16-upper fixing ring, 17-lower fixing ring, 18-upper bushing, 19-lower bushing. Detailed Implementation

[0014] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.

[0015] like Figures 1-2 The rolling mill tie rod anti-water ingress mechanism shown includes a tie rod 1, which is used to adjust the distance between two pressure rollers 9 of the rolling mill. The two pressure rollers are mounted on upper and lower bearing seats, with the upper bearing seat located on... Figure 1 As shown in Figure 10, the lower bearing housing is in Figure 1 As shown in Figure 11, the upper and lower bearing seats are provided with through holes for the pull rod to pass through. The upper and lower ends of the pull rod 1 are provided with an upper cover 12 and a lower cover 13. A shock-absorbing spring 14 is sleeved on the pull rod 1 inside the upper and lower covers. A nut 15 is provided on the upper bearing seat 10 and connected to the pull rod 1. The inner diameter of the nut 15 is provided with an internal thread, and the outer diameter of the pull rod 1 is provided with an external thread. The nut 15 and the pull rod 1 form a screw structure. An upper sleeve 4 is provided on the pull rod below the screw structure. The pull rod 1 is connected to the upper shaft through the upper sleeve 4. The upper bearing seat 10 is adjusted up and down by the pull rod 1 through the screw structure. The upper bearing seat 10 drives the upper pressure roller to move up and down, thereby adjusting the distance between the upper and lower pressure rollers. When the upper bearing seat 10 drives the upper pressure roller to move, the upper bearing seat 10 moves up and down at the position of the upper sleeve 4. The part of the upper bearing seat 10 that mates with the upper sleeve 4 is provided with a first annular groove. An upper sealing ring 2 is provided in the first annular groove. The sealing ring 2 plays a sealing role, thereby effectively preventing cooling water from entering the interior of the pull rod 1.

[0016] The upper fixed ring 16 is fixedly connected with the upper sheath 4, and the lower fixed ring 17 is arranged below the upper fixed ring 16, the contact surface of the upper fixed ring 16 and the upper sheath 4 is tightly matched, and the contact surface of the upper fixed ring 16 and the lower fixed ring 17 is tightly matched. The upper fixed ring 16 and the upper sheath 4 are provided with the upper bushing 18, and the upper fixed ring 16 and the lower fixed ring 17 are provided with the lower bushing 19. The upper bushing 18 is tightly matched with the upper fixed ring 16 and the upper sheath 4, so that the cooling water is prevented from entering the inside of the pull rod 1 from the joint of the upper fixed ring 16 and the upper sheath 4. The lower bushing 19 is tightly matched with the upper fixed ring 16 and the lower fixed ring 17, so that the cooling water is prevented from entering the inside of the pull rod from the joint of the upper fixed ring 16 and the lower fixed ring 17.

[0017] The lower fixed ring 17 is provided with the lower sheath 5, the lower sheath 5 is fixedly connected with the lower bearing seat 11, the bottom of the lower sheath 5 is provided with the third ring groove matched with the lower bearing seat 11, and the third ring groove is provided with the O-shaped ring 8. The cooling water is prevented from entering the inside of the pull rod 1 from the bottom matched with the lower bearing seat 11 of the lower sheath 5.

[0018] The inner diameters of the upper sheath 4 and the lower sheath 5 are same and slightly larger than the outer diameter of the pull rod, when the height of the upper compression roller is adjusted, the pull rod 1 needs to rotate and relatively move with the nut 15, the nut 15 is clamped in the upper bearing seat 10, the nut 15 drives the upper bearing seat 10 to move up and down, so that the up-down height of the upper compression roller is realized, the principle of the above pull rod 1 adjusting the up-down height of the upper compression roller is same as that of the existing technology rolling mill, and the innovation point of the utility model is not in this, the inner diameters of the upper sheath 4 and the lower sheath 5 are same and slightly larger than the outer diameter of the pull rod, so that the smooth operation of the pull rod 1 in the rotating motion is ensured.

[0019] The part, where the lower fixed ring 17 is matched with the lower sheath 5, is provided with the second ring groove, the second ring groove is provided with the lower sealing ring 6, and the cooling water is prevented from entering the inside of the pull rod from the part, where the lower fixed ring 17 is matched with the lower sheath 5,

[0020] The part, where the upper bearing seat 10 is matched with the upper sheath 4, is provided with the fourth ring groove, the fourth ring groove is provided with the upper dustproof ring 3, the part, where the lower fixed ring 17 is matched with the lower sheath 5, is provided with the fifth ring groove, and the fifth ring groove is provided with the lower dustproof ring 7. The fourth ring groove is arranged below the first ring groove, and the fifth ring groove is arranged below the second ring groove. By arranging the upper sheath and the lower sheath, the positions of the upper sheath and the lower sheath are further protected, the cooling water is prevented from entering the inside of the pull rod from the positions of the upper sheath and the lower sheath, and the water drainage effect is improved.

[0021] The above merely describes preferred embodiments of the present application, and thus equivalent changes or modifications made in accordance with the structure, features and principles described in the patent application scope of the present application are included in the patent application scope of the present application.

Claims

1. A water-proof mechanism for a rolling mill tie rod, comprising a tie rod for adjusting the distance between two pressure rollers of a rolling mill, the two pressure rollers being mounted on upper and lower bearing seats, the upper and lower bearing seats having through holes for the tie rod to pass through, upper and lower protective covers being provided at the upper and lower ends of the tie rod, shock-absorbing springs being sleeved on the tie rod within the upper and lower protective covers, and a nut being provided on the upper bearing seat and connected to the tie rod, the nut and the tie rod forming a screw structure, characterized in that... The upper sheath is arranged on the pull rod below the screw structure, the pull rod is matched with the upper bearing seat through the upper sheath, the upper sheath is fixedly connected with the upper fixed ring, the lower fixed ring is arranged below the upper fixed ring, the lower sheath is arranged in the lower fixed ring, the lower sheath is fixedly connected with the lower bearing seat, the inner diameters of the upper sheath and the lower sheath are same and are greater than the outer diameter of the pull rod, the part, where the upper bearing seat is matched with the upper sheath, is provided with the first ring groove, the upper sealing ring is arranged in the first ring groove, the part, where the lower fixed ring is matched with the lower sheath, is provided with the second ring groove, the lower sealing ring is arranged in the second ring groove, the part, where the lower sheath bottom is matched with the lower bearing seat, is provided with the third ring groove, and the O-shaped ring is arranged in the third ring groove.

2. A water ingress prevention mechanism for a mill pull rod as claimed in claim 1, characterised in that, The part, where the upper bearing seat is matched with the upper sheath, is provided with the fourth ring groove, the upper dustproof ring is arranged in the fourth ring groove, the part, where the lower fixed ring is matched with the lower sheath, is provided with the fifth ring groove, and the lower dustproof ring is arranged in the fifth ring groove.

3. A water ingress prevention mechanism for a mill pull rod as claimed in claim 2, wherein, The fourth ring groove is arranged below the first ring groove, and the fifth ring groove is arranged below the second ring groove.

4. A water entry prevention mechanism for a mill pull rod according to claim 1, characterized in that, The contact surface of the upper fixed ring and the upper sheath is tightly matched, and the contact surface of the upper fixed ring and the lower fixed ring is tightly matched.

5. A water ingress prevention mechanism for a mill pull rod as claimed in claim 4, wherein, The upper bushing is arranged between the upper fixed ring and the upper sheath, and the lower bushing is arranged between the upper fixed ring and the lower fixed ring.

6. A water ingress prevention mechanism for a mill pull rod as claimed in claim 5, wherein, The upper bushing is tightly matched with the upper fixed ring and the upper sheath, and the lower bushing is tightly matched with the upper fixed ring and the lower fixed ring.

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