CN215785689U

CN215785689U - Copper sleeve seat for short stress rolling mill connecting shaft

Info

Publication number: CN215785689U
Application number: CN202121348819.9U
Authority: CN
Inventors: 吴新然; 孟书锋; 吴静静; 杨迎君; 侯占东
Original assignee: Xuanhua Iron and Steel Group Co Ltd
Current assignee: Xuanhua Iron and Steel Group Co Ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-02-11
Anticipated expiration: 2031-06-17

Abstract

The utility model relates to a copper bush seat used for connecting shafts of a short-stress rolling mill, belonging to the technical field of short-stress rolling mill transmission equipment in the metallurgical industry. The technical solution is: including gland one (1), bearing seat (2), gland two (3), blocking cover (4), spline shaft (5), flat head cover (6), copper sleeve (8), The steel sleeve (9) and the graphite cylinder (10), the steel sleeve (9) is sleeved on the spline shaft (5), the copper sleeve (8) is sleeved on the steel sleeve (9), and the outer surface of the copper sleeve (8) Supported on the bearing seat (2), the graphite cylinder (10) is evenly inlaid on the copper sleeve (8). (2) A second gland (3) and a blocking cover (4) are arranged on one side of the spline shaft (5). The beneficial effect of the utility model is that the vibration caused by the transmission can be carried, the bearing damage is avoided, and the production characteristics of high speed, continuous and stable are satisfied.

Description

Copper sleeve seat for short stress rolling mill connecting shaft

Technical Field

The utility model relates to a copper sleeve seat for a short-stress rolling mill connecting shaft, belonging to the technical field of short-stress rolling mill transmission equipment in the metallurgical industry.

Background

At present, hundreds of high-speed wire rod rolling mills are in production all over the country, and the high-speed wire rod rolling mills become main technical equipment for wire rod production. With the continuous increase of the rolling speed, the stable operation of the equipment is the only guarantee for completing the yield. Aiming at equipment running at high speed, the high-speed and continuity of high-speed wire rod rolling is realized, and the stable transmission of the connecting shaft of the rolling mill plays an important role.

Referring to the attached drawings 1 and 2, the connecting shaft is a transmission shaft between the motor reducer and the rolling mill, the connecting shaft bracket balances the weight of the connecting shaft, and the torque of the motor can be stably and effectively transmitted to the roller and drives the roller to rotate under the conditions of different opening degrees. At present, the spiale bracket uses the assembly bearing frame, adopts ball bearing to bear all weights of spiale, realizes the fixed of spiale, the transmission of moment, the change of rolling mill, has following problem:

(1) the rolling mill has high rotating speed and large bearing vibration, and the bearing is easy to damage;

(2) the bearing seat has small gap, less oil storage amount, poor steel rolling environment, especially high temperature, fast consumption and loss of lubricating grease, easy oil shortage and bearing damage to cause steel piling accidents;

(3) the ball bearing bears all the weight of the spiale, and the rolling mill lifting spiale is frequently changed (the flat rolling mill is pulled out and pushed in) at the same time, the ball bearing axially bears hydraulic pressure and mechanical external force, the retainer of the bearing is extremely easily damaged by overlarge impact force, the spare parts are frequently changed, the cost is increased, and the requirements of continuous and fast-paced production cannot be effectively met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a copper sleeve seat for a short-stress rolling mill connecting shaft, which can bear vibration caused by transmission, avoid bearing damage, meet the characteristics of high-speed, continuous and stable production and solve the problems in the background technology.

The technical scheme of the utility model is as follows:

the utility model provides a copper sheathing seat for short stress rolling mill spiale, contains gland I, bearing frame, gland II, keeps off the lid, integral key shaft, flat headgear, copper sheathing, steel bushing and graphite cylinder, and the steel bushing cover is on the integral key shaft, and the copper sheathing is on the steel sheathing, and the surface of copper sheathing supports on the bearing frame, and the graphite cylinder is evenly inlayed on the copper sheathing, and one side that the bearing frame is located flat headgear is equipped with gland I, and one side that the bearing frame is located the integral key shaft is equipped with gland II and keeps off the lid.

The first gland, the bearing seat and the second gland are connected together through bolts.

The blocking cover is in a stepped cylindrical shape matched with the second pressing cover and the spline shaft.

The clearance between the copper bush and the steel sleeve is 3 mm.

The utility model has the beneficial effects that:

(1) the copper sleeve seat can bear vibration caused by a transmission in the high-speed rolling process, so that the bearing is prevented from being damaged;

(2) the copper sleeve outer sleeve and the steel sleeve inner sleeve are combined to replace a rather weak ball bearing, so that the bearing is not easy to damage due to oil shortage, the online time is greatly prolonged, and the service life of spare parts is prolonged;

(3) the graphite cylinder is embedded in the copper sleeve, so that self-lubrication can be realized, the lubrication period is long, and the use effect is good;

(4) the bearing structure is changed, the weak bearing retainer is changed into the thick blocking cover to bear the impact force, and the bearing structure is firm and durable and is not easy to damage due to frequent replacement of the rolling mill;

(5) the cost is low, the service cycle of spare parts is long, and the purposes of cost reduction and efficiency improvement are achieved.

Drawings

FIG. 1 is a schematic view of a spindle and a bearing seat of the prior art;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of a copper sleeve;

FIG. 4 is a schematic view of a copper sleeve;

FIG. 5 is a schematic illustration of a steel casing;

FIG. 6 is a schematic view of a shield cover;

in the figure: the device comprises a first gland 1, a bearing seat 2, a second gland 3, a baffle cover 4, a spline shaft 5, a flat head sleeve 6, a ball bearing 7, a copper sleeve 8, a steel sleeve 9 and a graphite cylinder 10.

Detailed Description

The utility model is further illustrated by way of example in the following with reference to the accompanying drawings.

Referring to the attached drawings 3-6, the copper bush seat for the short-stress rolling mill connecting shaft comprises a first gland 1, a bearing seat 2, a second gland 3, a blocking cover 4, a spline shaft 5, a flat head bush 6, a copper bush 8, a steel bush 9 and a graphite cylinder 10, wherein the steel bush 9 is sleeved on the spline shaft 5, the copper bush 8 is sleeved on the steel bush 9, the outer surface of the copper bush 8 is supported on the bearing seat 2, the graphite cylinder 10 is uniformly embedded on the copper bush 8, the first gland 1 is arranged on one side, located on the spline shaft 6, of the bearing seat 2, and the second gland 3 and the blocking cover 4 are arranged on one side, located on the spline shaft 5, of the bearing seat 2.

In this embodiment, referring to fig. 6, the blocking cover 4 is a stepped cylinder shape matching with the second gland 3 and the spline shaft 5, and the blocking cover 4 can bear most impact force without damage.

Referring to the attached drawings 3-6, the combined gap between the copper sleeve 8 and the steel sleeve 9 is 3mm, the copper sleeve 8 is provided with a graphite cylinder 10, sliding friction is formed when the connecting shaft of the rolling mill stops, such as when the connecting shaft and the rolling mill are replaced, and the second gland 3 is in contact with the stop cover 4 to bear hydraulic external force. Because of the large gap between the steel sleeve 9 and the copper sleeve 8, the connecting shaft transmission only transmits between the speed reducer and the roller, and the copper sleeve seat is not subjected to radial force during the connecting shaft transmission of the rolling mill, thereby completely avoiding the damage of vibration and impact force to the bearing.

Claims

1. A copper sleeve seat for connecting a shaft of a short stress rolling mill, characterized in that it comprises a gland one (1), a bearing seat (2), a second gland (3), a blocking cover (4), a spline shaft (5), flat head cover (6), copper sleeve (8), steel sleeve (9) and graphite cylinder (10), the steel sleeve (9) is sleeved on the spline shaft (5), and the copper sleeve (8) is sleeved On the steel sleeve (9), the outer surface of the copper sleeve (8) is supported on the bearing seat (2), the graphite cylinder (10) is evenly inlaid on the copper sleeve (8), and the bearing seat (2) is located on the flat head sleeve (2). 6) One side of the gland (1) is provided, and the side of the bearing seat (2) located on the spline shaft (5) is provided with the second gland (3) and the blocking cover (4).

2. A copper bush seat for short stress rolling mill shaft connection according to claim 1, characterized in that: the first gland (1), the bearing seat (2) and the second gland (3) pass through bolts (11) CONNECTED TOGETHER.

3. A copper bush seat for short stress rolling mill shaft connection according to claim 1, characterized in that: the blocking cover (4) is in phase with the second gland (3) and the spline shaft (5). Matching stepped cylindrical shape.

4 . The copper sleeve seat for short stress rolling mill shaft connection according to claim 1 , wherein the gap between the copper sleeve ( 8 ) and the steel sleeve ( 9 ) is 3 mm. 5 .