CN211218032U - Roll bearing assembly structure - Google Patents

Abstract

The utility model belongs to the technical field of steel rolling equipment, and in particular relates to a roller bearing assembly structure; The cylindrical roller bearing and the tapered roller bearing are axially positioned by the axial positioning assembly; the No. 1 oil inlet channel and the No. 2 oil inlet channel are arranged in the axial direction in the bearing seat, and the inner hole wall of the bearing seat is opened There are several annular oil grooves, the No. 1 oil inlet channel is communicated with the annular oil groove through several No. 1 branches, and the No. 2 oil inlet channel is communicated with the annular oil groove through several groups of No. 2 branches. The utility model can solve the problem of the roller in the prior art. The assembly problem is solved, and the problem of poor bearing lubrication effect caused by the unreasonable lubrication channel at present is solved.

Description

A roll bearing assembly structure

technical field

The utility model belongs to the technical field of steel rolling equipment, in particular to a roller bearing assembly structure.

Background technique

More than 60 years after the founding of the People's Republic of China, especially in the past 40 years of reform and opening up, my country's economic strength and comprehensive national strength have been greatly improved, the proportion of major economic and social aggregate indicators in the world has continued to increase, and the living standards of the Chinese people have been greatly improved. To a large extent, it has promoted the development of the construction, manufacturing, and transportation industries. As the upstream enterprises of these industries, iron and steel enterprises have also benefited a lot, so they have achieved great development. At the same time, high-quality and high-quality steel products are increasingly favored by the market. As a widely used material, steel plays an extremely important role in industry, agriculture, automobiles, construction, manufacturing and even aerospace. The production level of iron and steel is an important indicator to measure the modernization level of a country. In recent years, my country's steel product market has developed rapidly, and strip steel has always accounted for an important proportion of steel production.

As the width of steel strips produced by iron and steel enterprises is getting larger and larger, the size of the corresponding rolling mill rolls is also increasing, and the size of the bearings in the roll system is also increasing. Bearing radial force also needs bearing axial force, which puts forward higher requirements for its assembly structure, and a more reasonable and stable assembly is required. At the same time, the lubrication form of the bearing has also become a problem to be continuously improved. In the previous small strip production line, due to the relatively small size of the bearings used, the oil-air lubrication form of single oil inlet (only one oil inlet hole is punched in the bearing seat of the rolling mill) can meet the requirements of use. However, the rolling mill on the large-scale strip steel production line cannot meet the requirements. If the single oil feed is also adopted, it is easy to cause the bearing of the rolling mill shaft and roll system to be burned.

SUMMARY OF THE INVENTION

In view of this, the utility model aims to provide a roller bearing assembly structure, which can solve the problem of roller assembly in the prior art, and at the same time solve the problem of poor bearing lubrication effect caused by unreasonable lubrication channels at present.

In order to achieve the above object, the technical scheme of the present utility model is achieved in this way:

A roller bearing assembly structure, the roller is rotatably installed in a bearing seat through a cylindrical roller bearing and a tapered roller bearing, and an axial positioning assembly is installed on the roller, and the cylindrical roller bearing and the tapered roller bearing are fixed to the cylindrical roller bearing and the tapered roller through the axial positioning assembly. Axial positioning of roller bearings;

The bearing seat is provided with the No. 1 oil inlet channel and the No. 2 oil inlet channel arranged along the axial direction. There are several annular oil grooves on the hole wall of the inner hole, the No. 1 oil inlet channel is connected with the annular oil groove through several No. 1 branches, and the No. 2 oil inlet channel is connected with the annular oil groove through several groups of No. 2 branches.

Further, each group of No. 2 branches includes a main branch and a reversing branch; the reversing branch communicates with the annular oil groove, the main branch connects the No. 2 oil inlet channel and the reversing branch, and the main branch communicates with the reversing branch. It intersects vertically with the reversing branch and communicates at the intersection.

Further, the end ports of the No. 1 branch, the main branch and the reversing branch are closed by screw plugs.

Further, the axial positioning assembly includes a bushing and a bushing cup for separating the tapered roller bearing and the cylindrical roller bearing, the bushing is sleeved on the roller and pressed against the inner ring of the tapered roller bearing and the shaft of the roller. Between the shoulders, the sleeve cup is sleeved outside the tapered roller bearing, and the end is provided with a positioning end squeezed between the outer ring of the tapered roller bearing and the cylindrical roller bearing, and the sleeve cup is provided with a lubricating channel penetrating the sleeve wall.

Further, the axial positioning assembly also includes a threaded sleeve and a support sleeve positioned on the roll, a front transparent cover sealed on the outside of the tapered roller bearing, and a rear transparent cover sealed on the outside of the cylindrical roller bearing; the threaded sleeve is sleeved on the roll. and its one side is extruded on the end face of the inner ring of the tapered roller bearing, the front transparent cover is detachably connected to the sleeve cup, and its inner side is provided with a convex ring tightly pressing against the outer ring of the tapered roller bearing, and the support sleeve is sleeved on the roller and It is squeezed on the cylindrical roller bearing and the shaft shoulder of the roll, and the rear transparent cover is detachably and fixedly connected to the bearing seat.

Further, the front transparent cover is sleeved outside the threaded sleeve and a J-shaped frameless sealing ring is installed between the two; the rear transparent cover is sleeved outside the support sleeve and a J-shaped frameless sealing ring is installed between the two.

Further, an exhaust hole for communicating with the outside is opened in the rear transparent cover.

Further, the outer side of the threaded sleeve is positioned by the connected half ring and the round nut, the half ring is stuck in the positioning groove set in the roller, the round nut is screwed on the outside of the threaded sleeve, and the half ring and the round nut are connected by a Blocks are connected together.

Compared with the prior art, the utility model has the following advantages:

The roller is installed in the bearing seat through the cylindrical roller bearing and the tapered roller bearing. The cylindrical roller bearing bears radial force and the rolling reduction force of the rolling mill is borne by it. The tapered roller bearing mainly bears the axial force and is used for Bearing the radial force of the roll system; and, through the axial positioning component installed on the roll, the axial positioning of the cylindrical roller bearing and the tapered roller bearing makes the assembly of the bearing more stable and improves the performance of the equipment.

The utility model is based on the single oil inlet of the original rolling mill bearing seat, and double oil inlet channels are processed at appropriate positions, so that the oil inlet can be increased and the lubrication effect can be improved. Rotary oil supply can be formed in the interior to improve the running speed of lubricating oil, which can provide more sufficient lubrication and further improve the lubricating effect.

Description of drawings

The accompanying drawings that constitute a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic structural diagram of a bearing seat;

Figure 3 is a schematic diagram of the distribution of lubricating oil passages in the bearing housing;

Figure 4 is a front view of the bearing seat;

Figure 5 is a cross-sectional view of the bearing seat at the A-A section in Figure 4;

Figure 6 is a top view of the bearing seat;

FIG. 7 is a cross-sectional view of the bearing seat of FIG. 6 at the B-B section.

Description of reference numbers:

1-Roll; 2-Bearing seat; 21-No.1 oil inlet channel; 211-No.1 branch; 22-No.2 oil inlet; 221-Main branch; 222-Reversing branch; 23-Annular oil groove; 24-plug; 31-cylindrical roller bearing; 32-tapered roller bearing; 41-sleeve; 42-cup; 421-lubrication channel; 422-positioning end; 51-front transparent cover; 52-rear transparent cover ; 521- exhaust hole; 61- threaded sleeve; 62- support sleeve; 7- J-type frameless sealing ring; 81- half ring; 82- round nut; 83- connecting block.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility. The novel and simplified description does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figures 1-7, a roller bearing assembly structure, the roller 1 is rotatably installed in a bearing seat 2 through a cylindrical roller bearing 31 and a tapered roller bearing 32, and an axial positioning assembly is installed on the roller 1 , the cylindrical roller bearing 31 and the tapered roller bearing 32 are axially positioned through the axial positioning assembly;

The bearing seat 2 is provided with the No. 1 oil inlet passage 21 and the No. 2 oil inlet passage 22 arranged along the axial direction, and the No. Diagonally arranged, there are several annular oil grooves 23 on the inner hole wall of the bearing seat 2, the No. 1 oil inlet channel 21 is connected with the annular oil groove 23 through several No. The No. 2 branch is communicated with the annular oil tank 23. Each group of No. 2 branches includes a main branch 221 and a reversing branch 222; The channel 22 and the reversing branch 222 communicate with each other, and the main branch 221 and the reversing branch 222 intersect vertically and communicate at the intersection.

On the one hand, the traditional single-inlet lubrication method has a relatively small amount of oil, and at the same time, the effect of lubrication depends on the amount of oil in and the random oil flow direction, and the lubrication effect is relatively general. The utility model is based on the single oil inlet of the original rolling mill bearing seat 2, and double oil inlet passages are processed in appropriate positions, so that the oil inlet can be increased and the lubrication effect can be improved. In addition, the design of the second branch is mainly to make The lubricating oil forms a rotary oil supply in the annular oil groove 23. Because the bearing seat 2 is also installed with other components, the position of the No. 2 oil inlet channel 22 is relatively fixed and cannot be changed at will. Figure 5 shows the flow direction of the lubricating oil in the bearing seat 2 If the main branch 221 is directly communicated with the annular oil groove 23, in the annular oil groove 23, the oil supply of the two oil inlet channels will be offset due to the opposite flow directions, and a one-way rotary oil supply cannot be formed. To the branch 222, the lubricating oil entering the No. 2 oil inlet passage 22 is reversed, so that the oil flow direction of the No. 1 oil inlet passage 21 in the annular oil groove 23 is the same, so that the lubricating oil is formed in the annular oil groove 23 Rotate the oil supply to increase the running speed of the lubricating oil, which can provide more sufficient lubrication and further improve the lubrication effect.

Further, the end ports of the No. 1 branch 211 , the main branch 221 and the reversing branch 222 are closed by the screw plugs 24 to prevent the lubricating oil from leaking out.

The axial positioning assembly includes a bushing 41 and a bushing cup 42 for separating the tapered roller bearing 32 and the cylindrical roller bearing 31, the bushing 41 is sleeved on the roll 1 and is squeezed in the tapered roller bearing 32 Between the ring and the shaft shoulder of the roll 1, the sleeve cup 42 is sleeved outside the tapered roller bearing 32 and the end is provided with a positioning end 422 squeezed between the outer ring of the tapered roller bearing 32 and the cylindrical roller bearing 31. A lubricating channel 421 penetrating the sleeve wall is opened in 42, which is convenient for lubricating oil to enter and lubricate the bearing. The axial positioning assembly also includes a threaded sleeve 61 and a support sleeve 62 positioned on the roll 1, a front transparent cover 51 sealed on the outside of the tapered roller bearing 32, and a rear transparent cover 52 sealed on the outside of the cylindrical roller bearing 31; The threaded sleeve 61 is sleeved on the roll 1 and its one side is pressed against the end face of the inner ring of the tapered roller bearing 32 . The support sleeve 62 is sleeved on the roller 1 and squeezed on the cylindrical roller bearing 31 and the shaft shoulder of the roller 1, and the rear transparent cover 52 is detachably and fixedly connected to the bearing seat 2.

Preferably, the front transparent cover 51 is sleeved outside the threaded sleeve 61 and a J-shaped frameless sealing ring 7 is installed between the two; the rear transparent cover 52 is sleeved outside the support sleeve 62 and a J-shaped frameless sealing ring is installed between the two. Circle 7. The J-type frameless sealing ring 7 has good sealing performance and can play a good sealing effect to prevent the leakage of lubricating oil.

Preferably, there is an exhaust hole 521 in the rear transparent cover 52 which communicates with the outside world. Because the roller system is internally sealed, the bearings inside the roller system are lubricated with oil and gas. When air is vented to the interior of the roller system from the outside, the exhaust hole 521 is required to exhaust air to facilitate the entry of oil and gas.

Preferably, the outer side of the threaded sleeve 61 is positioned by the half ring 81 and the round nut 82 connected together, the half ring 81 is clamped in the positioning groove provided in the roll 1, the round nut 82 is screwed on the outside of the threaded sleeve 61, and the half ring 81 The ring 81 and the round nut 82 are connected together by a connecting block 83. The threaded sleeve 61 serves as the end of the entire positioning system and plays a key role in the positioning of the bearing. Using this ingenious positioning structure, the threaded sleeve 61 can be axially aligned at the same time. And radial positioning, thus ensuring the stable installation and positioning of the overall structure. How to install the half ring 81 in the positioning groove in the roller 1 for convenience, because the closed structure such as a ring cannot be installed in the positioning groove in the roller 1, so the half ring 81 is used to cleverly solve this problem. a problem.

During installation, the roll 1 is installed in the bearing seat 2 through the cylindrical roller bearing 31 and the tapered roller bearing 32. The cylindrical roller bearing 31 is radially stressed, and the rolling reduction force of the rolling mill is borne by the tapered roller bearing. 32 mainly bears the axial force and is used to bear the radial force of the roll system; and, through the axial positioning assembly installed on the roll 1, the cylindrical roller bearing 31 and the tapered roller bearing 32 are axially positioned, and at the same time, considering The sealing and lubrication of the bearing makes the assembly of the bearing more stable and reasonable, and the performance of the equipment is improved.

The utility model is based on the single oil inlet of the original rolling mill bearing seat 2, and double oil inlet channels are processed at appropriate positions, which can increase the amount of oil inlet and improve the lubricating effect. A rotary oil supply can be formed in the annular oil groove 23 to increase the running speed of the lubricating oil, which can provide more sufficient lubrication and further improve the lubricating effect.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (8)

1. A roll bearing assembly structure is characterized in that: the roller (1) is rotatably arranged in a bearing seat (2) through a cylindrical roller bearing (31) and a tapered roller bearing (32), an axial positioning assembly is arranged on the roller (1), and the cylindrical roller bearing (31) and the tapered roller bearing (32) are axially positioned through the axial positioning assembly;

be equipped with in bearing frame (2) along the axial No. one oil feed passageway (21) and No. two oil feed passageway (22) that set up, No. one oil feed passageway (21) and No. two oil feed passageway (22) set up respectively in the both sides of bearing frame (2), are diagonal angle and arrange, it has a plurality of annular oil groove (23) to open on the hole pore wall of bearing frame (2), No. one oil feed passageway (21) communicate through a plurality of branch roads (211) and annular oil groove (23), No. two oil feed passageway (22) communicate with annular oil groove (23) through a plurality of groups No. two branch roads.

2. The roll bearing assembling structure according to claim 1, wherein: each group of the second branch comprises a main branch (221) and a reversing branch (222); the reversing branch (222) is communicated with the annular oil groove (23), the main branch (221) is communicated with the second oil inlet channel (22) and the reversing branch (222), and the main branch (221) and the reversing branch (222) are vertically staggered and communicated at an intersection point.

3. The roll bearing assembling structure according to claim 2, wherein: the end ports of the first branch (211), the main branch (221) and the reversing branch (222) are closed by screw plugs (24).

4. The roll bearing assembling structure according to claim 1, wherein: the axial positioning assembly comprises a shaft sleeve (41) and a sleeve cup (42) which are used for separating the tapered roller bearing (32) and the cylindrical roller bearing (31), the shaft sleeve (41) is sleeved on the roller (1) and is extruded between an inner ring of the tapered roller bearing (32) and a shaft shoulder of the roller (1), the sleeve cup (42) is sleeved outside the tapered roller bearing (32), the tail end of the sleeve cup is provided with a positioning end (422) extruded between an outer ring of the tapered roller bearing (32) and the cylindrical roller bearing (31), and a lubricating channel (421) penetrating through the sleeve wall is formed in the sleeve cup (42).

5. The roll bearing assembling structure according to claim 4, wherein: the axial positioning assembly further comprises a threaded sleeve (61) and a supporting sleeve (62) which are positioned on the roller (1), a front transparent cover (51) which is sealed at the outer side of the tapered roller bearing (32) and a rear transparent cover (52) which is sealed at the outer side of the cylindrical roller bearing (31); the threaded sleeve (61) is sleeved on the roller (1) and one side of the threaded sleeve is extruded on the end face of an inner ring of the tapered roller bearing (32), the front transparent cover (51) is detachably connected to the sleeve cup (42) and the inner side of the front transparent cover is provided with a convex ring tightly propped against the outer ring of the tapered roller bearing (32), the support sleeve (62) is sleeved on the roller (1) and extruded on shaft shoulders of the cylindrical roller bearing (31) and the roller (1), and the rear transparent cover (52) is detachably and fixedly connected to the bearing seat (2).

6. The roll bearing assembling structure according to claim 5, wherein: the front transparent cover (51) is sleeved outside the threaded sleeve (61), and a J-shaped frameless sealing ring (7) is arranged between the front transparent cover and the threaded sleeve; the rear transparent cover (52) is sleeved outside the support sleeve (62), and a J-shaped frameless sealing ring (7) is arranged between the rear transparent cover and the support sleeve.

7. The roll bearing assembling structure according to claim 5, wherein: an air vent (521) communicated with the outside is arranged in the rear transparent cover (52).

8. The roll bearing assembling structure according to claim 5, wherein: the outer side of the threaded sleeve (61) is positioned through a half ring (81) and a round nut (82) which are connected together, the half ring (81) is clamped in a positioning groove arranged in the roller (1), the round nut (82) is screwed outside the threaded sleeve (61), and meanwhile, the half ring (81) and the round nut (82) are connected together through a connecting block (83).

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