CN101513646B - Bearing pedestal of four high mill - Google Patents

Abstract

The invention relates to the field of rolling machinery, in particular to the bearing pedestal of a four high mill, which is provided with a pedestal body for placing rollers with bearing packs and a small bearing pedestal coaxially fixed with the pedestal body, wherein, a bearing end cover and a bearing bush are fixed at the end part of the small bearing pedestal; a main oil passage which is parallel to the axial direction and allows lubricating oil to circulate is formed on the axial end surface in the pedestal body; a bypass oil passage is formed on the main oil passage; the main oil passage consists of a main oil inlet passage and a bypass oil outlet passage; the bypass oil passage consists of a bypass oil inlet passage and a bypass oil outlet passage; an oil injection device of the bypass oil outlet passage is arranged at the end part of the inner wall of the pedestal body; ring-shaped oil ducts are circumferentially formed on the inner wall of the pedestal body; and the oil ducts are communicated with the bypass oil passage. The invention has the beneficial effects that the temperature in the bearing pedestal can be rapidly reduced, and the bearing pedestal allows the continuous operation under the conditions of high pressure and high temperature, thereby increasing the production rate and guaranteeing the safety and the product quality.

Description

Four-high rolling mill bearing housing

technical field

The invention relates to the field of steel rolling machinery, in particular to a four-high rolling mill bearing seat.

Background technique

Rolling mills are widely used in the field of rolling machinery. The work rolls and work roll chocks of the rolling mill need back-up roll bearings to provide pressure to make the work rolls work effectively, but the pressure provided by general back-up roll bearings cannot be rolled continuously. , reversible work; with the continuous development of cold rolling technology, the working environment of the rolling mill is gradually moving towards a high-temperature, heavy-duty working environment. In order to increase production, the rolling mill is changing to continuous and high-speed operation. It is suitable for the current working environment. In such an environment, the temperature of the bearing in the bearing seat often rises sharply, and the temperature cannot be lowered in a short time, so it cannot continue to work, and even cause safety accidents such as cracked rollers and burst rollers. Ordinary bearing seats are equipped with The time is not convenient.

purpose of invention

The present invention provides a four-high rolling mill bearing block aiming at the shortcomings of the above-mentioned technology that the cooling cannot be cooled in a short time, continuous rolling cannot be performed, and assembly is inconvenient.

Realize the technical scheme of the present invention as follows:

Four-high rolling mill bearing housing, which has a housing for the rolls with a bearing set and a small bearing housing coaxially fixed with the housing. The end of the small bearing housing is fixed with a bearing end cover and a shaft sleeve. The axial end surface of the housing is There is a main oil passage parallel to the axial direction for the circulation of lubricating oil. There are branch oil passages on the main oil passage. The main oil passage consists of the main oil passage for oil inlet and the main oil outlet passage. The oil outlet branch oil passage is composed of an oil injection branch oil passage at the end of the inner wall of the seat, and an annular oil passage is arranged on the inner wall of the seat circumferentially, and the oil passage communicates with the branch oil passage.

The small bearing seat is provided with an oil inlet, the oil inlet is provided with a joint on the outer wall of the small bearing seat, and an oil injection port is provided on the inner wall.

The top of the pedestal is provided with a pressure supply device for providing pressure to the work roll chock of the rolling mill.

The main oil passage is provided with a joint at the end of the seat body.

The fuel injection device is a nozzle.

The pressure supply device is an oil cylinder, and the oil cylinder is a single-rod piston hydraulic cylinder, and there are two single-rod piston hydraulic cylinders.

The bottom of the seat body is provided with a set of rollers.

Utilizing the above technology, the chock of a four-high rolling mill has a pedestal for the rolls with a bearing set and a small chock coaxially fixed with the pedestal. The end of the small chock is fixed with a bearing end cover and a shaft sleeve. The axial end surface of the body is provided with a main oil passage parallel to the axial direction for the circulation of lubricating oil. The main oil passage is provided with a branch oil passage. The main oil passage is composed of an oil inlet main oil passage and an oil outlet main oil passage. The branch oil passage and the oil outlet branch oil passage are composed of an oil injection device at the end of the inner wall of the base, and an annular oil passage is arranged on the inner wall of the seat. The device is connected with the bearing group, so that the lubricating oil can reach the oil inlet branch oil circuit from the main oil inlet circuit, and the oil mist is sprayed on the bearing group through the oil injection port on the small bearing seat and the nozzle on the seat body. The lubricating oil from the heat of the bearing group flows through the annular oil passage to the oil outlet branch oil circuit, then from the oil outlet branch oil circuit to the oil outlet main oil circuit, and finally flows out through the joint of the oil outlet main oil outlet to recover, and the heat generated by the bearing group Take away to reduce the temperature in the bearing housing. The two oil cylinders set on the housing are single-rod piston hydraulic cylinders. The hydraulic pressure in the cylinder can be used to adjust the pressure of the piston rod on the bearing housing of the work roll. The set roller group can make It is safer and more convenient to assemble the support roller bearing seat. The invention has the beneficial effects of rapidly reducing the temperature in the bearing seat, continuously working under heavy pressure and high temperature, increasing the production speed and ensuring safety and product quality.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is a half-sectional view of A direction of Fig. 1;

Fig. 3 is the B-B view of Fig. 2;

Fig. 4 is the C-C view of Fig. 2;

In the figure, 1. Seat body, 2. Small bearing seat, 3. Bearing end cover, 4. Bushing, 5. Main oil inlet circuit, 6. Main oil outlet circuit, 7. Oil inlet branch oil circuit, 8 , oil outlet branch oil circuit, 9, nozzle, 10, annular oil passage, 11, joint, 12, oil cylinder, 13, roller group, 14, oil inlet, 15, fuel injection port.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the chock of a four-high rolling mill has a pedestal body 1 for placing a roll with a bearing group and a small bearing chock 2 fixed coaxially with the pedestal body, the small bearing The end of the seat is fixed with a bearing end cover 3 and a shaft sleeve 4. The axial end surface of the seat is provided with a main oil passage parallel to the axial direction for the circulation of lubricating oil. The oil passage 5 and the oil outlet main oil passage 6 are composed, the branch oil passage is composed of the oil inlet branch oil passage 7 and the oil outlet branch oil passage 8, the oil inlet branch oil passage 7 is provided with a fuel injection device at the end of the inner wall of the seat, and the fuel injection device It is a nozzle, and the inner wall of the seat is provided with an annular oil passage 10 in the circumferential direction. The oil passage 10 is connected with the branch oil passage. The joint 11 is provided with an oil injection port 15 on the inner wall, and the top of the seat body 1 is provided with a pressure supply device for providing pressure to the work roll bearing seat of the rolling mill. The device is an oil cylinder 12, which is a single-rod piston hydraulic cylinder. Single-rod piston hydraulic cylinder, the main oil circuit is provided with a joint 11 at the end of the seat body, and a roller group 13 is provided at the bottom of the seat body 1 . The oil spray device is connected with the bearing group, so that the lubricating oil can reach the oil inlet branch oil circuit 7 from the oil inlet main oil circuit 5, and the oil mist is sprayed on the bearing group through the nozzle, and the lubricating oil with the heat of the bearing group passes through the ring oil The channel 10 flows to the oil outlet branch oil passage 8, and then from the oil outlet branch oil passage 8 to the oil outlet main oil passage 6, and finally flows out and recovers through the joint 11 of the oil outlet main oil outlet 6, taking away the heat generated by the bearing group, To reduce the temperature in the bearing seat, the two oil cylinders set on the seat body 1 are single-rod piston hydraulic cylinders 12, which can use the liquid pressure in the cylinder to adjust the pressure of the piston rod on the work roll bearing seat, and the set roller group 13 can This makes it safer and more convenient to assemble the support roller bearing seat.

Claims (7)

1. Four-high rolling mill bearing housing, which has a base body for placing the rolls with bearing groups and a small bearing housing coaxially fixed with the base body, and the end of the small bearing housing is fixed with a bearing end cover and a shaft sleeve, which is characterized in that : The axial end surface of the seat body is provided with a main oil passage parallel to the axial direction for the circulation of lubricating oil, and a branch oil passage is arranged on the main oil passage. The main oil passage is composed of an oil inlet main oil passage and an oil outlet main oil passage. The oil inlet branch oil passage and the oil outlet branch oil passage are composed. The oil inlet branch oil passage is provided with an oil spray device at the end of the inner wall of the seat, and an annular oil passage is arranged on the inner wall of the seat circumferentially, and the oil passage communicates with the branch oil passage. 2. The four-high rolling mill bearing housing according to claim 1, characterized in that: the small bearing housing is provided with an oil inlet, the oil inlet is provided with a joint on the outer wall of the small bearing housing, and a spray nozzle is provided on the inner wall. oil port. 3. The chock of a four-high rolling mill according to claim 1, characterized in that: the top of the pedestal body is provided with a pressure supply device for providing pressure to the chock of the working roll of the rolling mill. 4. The chock for a four-high rolling mill according to claim 1, characterized in that: said main oil passage is provided with a joint at the end of the pedestal body. 5. The chock of a four-high rolling mill according to claim 1, wherein the oil injection device is a nozzle. 6. The chock for a four-high rolling mill according to claim 3, wherein the pressure supply device is an oil cylinder, the oil cylinder is a single-rod piston hydraulic cylinder, and there are two single-rod piston hydraulic cylinders. 7. The chock for a four-high rolling mill according to claim 1, characterized in that: the bottom of the pedestal is provided with a set of rollers.

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