CN217251595U

CN217251595U - Cooling type transportation roller

Info

Publication number: CN217251595U
Application number: CN202220758056.3U
Authority: CN
Inventors: 王大民; 王灏强; 王东彬; 程保平
Original assignee: Handan Daming Metallurgical Equipment Co ltd
Current assignee: Handan Daming Metallurgical Equipment Co ltd
Priority date: 2022-04-03
Filing date: 2022-04-03
Publication date: 2022-08-23
Anticipated expiration: 2032-04-03

Abstract

The utility model discloses a cooled transportation roller uses metallurgical field. The roller body of the conveying roller comprises a roller sleeve, a mandrel and bearings, wherein the mandrel is sleeved with the roller sleeve, a gap for circulating lubricating oil is formed between the roller sleeve and the mandrel, and the roller sleeve is rotatably connected with the mandrel through the bearings at two ends. And a cavity is formed between the baffle and the bearing on two end surfaces of the roller sleeve and is sealed by a sealing ring. Two ends of the mandrel are provided with two symmetrical oil ducts, one opening of each oil duct is communicated with the cavity, and the other opening of each oil duct is positioned on the end face of the mandrel and connected with an oil pipe fixed on the support. In order to reduce the cooling pressure of lubricating oil, a processing water channel penetrating through the mandrel is connected with a water pipe on the support. The utility model discloses utilize lubricating oil lubrication cooling bearing, improved the life of bearing, the cooling water takes away the heat, has guaranteed the stability of conveying roller work, and roller shell and dabber components of a whole that can function independently suit have reduced the input cost of spare parts.

Description

Cooling type transportation roller

Technical Field

The utility model discloses be applied to the metallurgical field, relate to the transportation roller of high temperature rolling base, especially a built-in water-cooled transportation roller.

Background

The metallurgy steelmaking continuous casting and rolling technology is generally applied, and a high-temperature continuous casting billet or a rolling billet needs to be transported to the next station by a transport roller. Because the transportation roller always contacts with the high-temperature blank and bears the friction and the impact of the blank, the maintenance amount of the bearing or the transportation roller is increased due to the working condition and the badness of the transportation roller, the standby transportation roller with more reserves is needed, and the replacement is carried out in time, so that the continuous production is ensured.

Publication number CN109128071A discloses a slab continuous casting transport roller inner cooling device, which adopts a spray cooling water pipe to cool a transport roller in the roller, and cooling water forms a cambered surface after being sprayed out from a conical water seam on the spray cooling water pipe, and can be connected into a line when contacting the roller, so that the roller achieves the best cooling effect. The publication number CN215941071U discloses a temperature-controllable self-positioning bar hot rolling transportation roller way, wherein a cooling water is introduced into a V-shaped roller way to cool the transportation roller. The two transportation rollers have two disadvantages, namely, the roller and the rotating shaft are integrated, the roller and the rotating shaft are replaced simultaneously after being worn, and equipment spare parts are more in investment; secondly, the bearing is not cooled and is at a higher temperature during working, the expansion of the bearing causes the working friction of the bearing to be larger, and the service life is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem be: the cooling type conveying roller is provided, the roller is separated from the shaft, the cooling effect of a bearing is increased, and the service life of the conveying roller is prolonged.

The utility model adopts the technical proposal that: the cooling type conveying roller comprises an oil pipe, a support and a roller body, wherein the support supports the roller body, and the roller body comprises a roller sleeve, a mandrel and a bearing; the roller sleeve is sleeved with the mandrel, a gap is reserved between the roller sleeve and the mandrel, and the roller sleeve is rotatably connected with the mandrel through bearings at two ends of the roller sleeve. And two end surfaces of the roller sleeve are provided with baffle plates, a cavity is formed between the baffle plates and the bearing, and the cavity is sealed by a sealing ring. Two symmetrical oil ducts are processed in the mandrel, the two oil ducts are located at two ends of the mandrel, an opening of each oil duct is communicated with the cavity, an opening of each oil duct is located on the end face of the mandrel, an oil pipe is fixedly connected to the end face, and the oil pipe is fixedly installed on the support.

Furthermore, in order to reduce the cooling pressure of lubricating oil, a water channel is processed in the mandrel, penetrates through the mandrel and is connected with a water pipe fixed on the support.

Further, an opening is added on the mandrel through the oil channel, and the opening is located at the junction of the bearing and the gap. Lubricating oil accessible clearance short circuit circulation reduces the oil pressure in the cavity, avoids the sealing washer oil leak.

Furthermore, in order to improve the connection effect of the roller sleeve and the mandrel, the bearing is positioned and fixed by the baffle ring and the step on the mandrel.

The utility model has the advantages that: the utility model discloses utilize lubricating oil lubrication cooling bearing, guarantee that the bearing is in good operating condition, improved the life of bearing greatly, with heat transfer to dabber simultaneously, the cooling water in the dabber takes away the heat, has guaranteed conveying roller job stabilization nature, has reduced the operational failure. The roller sleeve and the mandrel are sleeved in a split manner, so that the investment cost of spare parts is reduced.

Drawings

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

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a right-side schematic view of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 1;

FIG. 5 is a schematic diagram of a modification of the structure of FIG. 4;

reference numerals: 1-oil pipe, 2-water pipe, 3-support, 4-baffle, 5-seal ring, 6-bearing, 7-roller sleeve, 8-mandrel, 9-baffle ring, 10-water channel, 11-oil channel, 12-high temperature blank, 13-gap, 14-cavity.

Detailed Description

Fig. 1 is a schematic structural view of the cooling type transportation roller of the present invention, fig. 2 is a top view thereof, and fig. 3 is a right side view thereof. The cooling type transportation roller comprises an oil pipe 1, a support 3 and a roller body, wherein the support 3 is used for supporting the roller body. The roller body comprises a roller sleeve 7, a mandrel 8, a bearing 6 and the like. The roller sleeve 7 is sleeved on the mandrel 8, and a larger gap 13 is arranged between the roller sleeve and the mandrel. The roller sleeve 7 is rotatably connected with the mandrel 8 through bearings 6 at two ends of the roller sleeve, and the bearings 6 are positioned and fixed by a baffle ring 9 and steps on the mandrel 8, as shown in figure 4. The baffle 4 seals the mounting opening of the bearing 6, the roller sleeve 7 and the mandrel 8 are sealed by the sealing ring 5, and a cavity 14 is formed between the baffle 4 and the bearing 6. The mandrel 8 is internally provided with two oil passages 11, the two oil passages 11 are positioned at two ends of the mandrel 8 and are symmetrically arranged, one opening of each oil passage 11 is communicated with the cavity 14, one opening is positioned on the end surface of the mandrel 8 and is fixedly connected with the oil pipe 1, and the oil pipe 1 is fixedly arranged on the support 3.

When the high-temperature blank 12 is transported on the roller body, the heat of the high-temperature blank 12 is transmitted to the roller sleeve 7 and the bearing 6, liquid lubricating oil is introduced into the oil pipe 1, the lubricating oil enters the oil duct 11 and the cavity 14 from one end face of the mandrel 8, cools the bearing 6 at the end, flows through the gap 13, cools the bearing 6 at the other end, and then enters the oil pipe 1 through the cavity 14 and the oil duct 11 to flow out. The lubricating oil cools the bearing 6 and the roller sleeve 7 while lubricating the bearing 6, and takes away heat transferred by the high-temperature blank 12.

In order to improve the cooling effect and reduce the cooling pressure of lubricating oil, a water channel 10 is processed in the mandrel 8, the water channel 10 penetrates through the mandrel 8, an inlet and an outlet of the water channel are positioned at the centers of two ends of the mandrel 8 and are fixedly connected with the water pipe 2, and the water pipe 2 is fixedly installed on the support 3. Let in the cooling water in the water pipe 2, the lubricating oil in the clearance 13 plays the heat transfer effect, gives dabber 8 with the heat transfer of roller shell 7, and the cooling water can take away the heat of dabber 8 for the temperature of dabber 8 is unanimous with the temperature of cooling water. The lubricating oil forms a good heat transfer between the roll shell 7 and the mandrel 8, and there is no thermal resistance. The structure is favorable for reducing the flow velocity of lubricating oil, reducing the oil pressure and reducing the volume of a lubricating oil heat exchanger and an oil storage tank.

Because the sealing ring 5 between the baffle 4 and the mandrel 8 is always in a friction state during working, the sealing ring 5 is inevitably abraded due to long-time friction, so that lubricating oil in the cavity 14 leaks and oil leakage is caused. In order to avoid oil leakage or reduce the oil pressure in the cavity 14, oil holes are formed at the other side of the bearing 6, as shown in fig. 5, that is, oil holes of oil passages are formed at both sides of the bearing 6, so that the lubricating oil forms a short circuit at both ends of the gap 13, and the oil pressure in the cavity 14 is reduced.

The utility model discloses dabber 8 is fixed on support 3, and high temperature blank 12 is carried in the rotation of roller shell 7 and bearing 6, lets in lubricating oil lubrication cooling bearing 6 between roller shell 7 and dabber 8, guarantees that bearing 6 is in good operating condition, has improved the life of bearing 6 greatly, transmits the heat to dabber 8 simultaneously, and the cooling water in the dabber 8 takes away the heat, has guaranteed conveying roller job stabilization nature, has reduced the operational failure. The roller sleeve 7 and the mandrel 8 are sleeved in a split mode, and only the roller sleeve 7 is replaced after the roller sleeve 7 is abraded. If the roller sleeve 7 is made of wear-resistant materials, only the sealing ring needs to be replaced regularly, so that the equipment spare part investment and the equipment maintenance cost are greatly reduced.

Claims

1. A cooled transport roller characterized by: the roller comprises an oil pipe (1), a support (3) and a roller body, wherein the support (3) supports the roller body, and the roller body comprises a roller sleeve (7), a mandrel (8) and a bearing (6); the roller sleeve (7) is sleeved with the mandrel (8), a gap (13) is reserved between the roller sleeve and the mandrel (8), and the roller sleeve (7) is rotatably connected with the mandrel (8) through bearings (6) at two ends of the roller sleeve; two end surfaces of the roller sleeve (7) are provided with baffle plates (4), a cavity (14) is formed between each baffle plate (4) and the bearing (6), and the cavity (14) is sealed by a sealing ring (5); two symmetrical oil ducts (11) which are positioned at two ends of the mandrel (8) are processed in the mandrel (8), one opening of each oil duct (11) is communicated with the cavity (14), one opening is positioned on the end face of the mandrel (8) and is fixedly connected with the oil pipe (1), and the oil pipe (1) is fixedly arranged on the support (3).

2. A cooled transport roller as defined in claim 1, wherein: a water channel (10) is processed in the mandrel (8), and the water channel (10) penetrates through the mandrel (8) and is connected with a water pipe (2) fixed on the support (3).

3. A cooled transport roller as defined in claim 1, wherein: the oil passage (11) is additionally provided with an opening on the mandrel (8), and the opening is positioned at the junction of the bearing (6) and the clearance (13).

4. A chilled transport roller as defined in claim 3, wherein: the bearing (6) is positioned and fixed by a baffle ring (9) and a step on the mandrel (8).