阅读说明：本技术 大直径双列调心轴承座的立式装配工装及其装配方法 (Vertical assembly tool and method for large-diameter double-row self-aligning bearing seat ) 是由 常军 尹浩 李海 曹维军 郭永红 杨允亨 贾兰瑞 张良君 韩雨 于 2021-09-11 设计创作，主要内容包括：本发明公开了一种大直径双列调心轴承座的立式装配工装及其装配方法,解决了在轴承装配中如何保持双列调心轴承的内圈中心轴线与外圈中心轴线重合的问题。本发明充分利用了轴承内盖和轴承座上的两轴承盖连接通孔,在电机轴端面上设置圆形工装板,在圆形工装板上设置下拉杆的一圈穿接光孔,在下拉杆的一圈穿接光孔内圆上设置一圈螺孔,下压杆穿过该螺孔后,顶接在环形顶环上,环形顶环设置在大直径双列调心轴承的外圈(14)的上顶面与大直径双列调心轴承的内圈(15)的上顶面之间,在轴承安装过程中,环形顶环保证了大直径双列调心轴承的外圈(14)的上顶面与大直径双列调心轴承的内圈的上顶面在同一平面上；工装结构简单,现场操作容易。(The invention discloses a vertical assembly tool of a large-diameter double-row self-aligning bearing seat and an assembly method thereof, which solve the problem of how to keep the central axis of an inner ring and the central axis of an outer ring of a double-row self-aligning bearing coincident in bearing assembly. The invention fully utilizes the connection through holes of the bearing inner cover and the two bearing covers on the bearing seat, a circular tooling plate is arranged on the end surface of the motor shaft, a circle of penetration unthreaded holes of a lower pull rod is arranged on the circular tooling plate, a circle of screw holes are arranged on the inner circle of the penetration unthreaded holes of the lower pull rod, a lower press rod penetrates through the screw holes and then abuts against an annular top ring, the annular top ring is arranged between the upper top surface of the outer ring (14) of the large-diameter double-row self-aligning bearing and the upper top surface of the inner ring (15) of the large-diameter double-row self-aligning bearing, and the annular top ring ensures that the upper top surface of the outer ring (14) of the large-diameter double-row self-aligning bearing and the upper top surface of the inner ring of the large-diameter double-row self-aligning bearing are on the same plane in the bearing installation process; the tool has simple structure and easy field operation.)

1. A vertical assembly fixture of a large-diameter double-row self-aligning bearing seat comprises a vertically placed motor rotating shaft (28), a motor end cover (32) and a bearing seat (34), wherein a bearing positioning step (44) is arranged on the motor rotating shaft (28), an inner ring (15) of the large-diameter double-row self-aligning bearing is sleeved on the motor rotating shaft on the bearing positioning step (44), a bearing inner cover (45) is movably sleeved on the motor rotating shaft (28) below the bearing positioning step (44), a bearing inner cover mounting screw hole (31) is arranged on an outer ring of the bearing inner cover (45), a bearing seat connecting bolt screw hole (33) is arranged on the motor end cover (32) outside a central hole, a through-connection through hole (36) of a bearing inner cover outer cover connecting bolt is arranged on the bearing seat (34), a fixed bearing seat bolt screw hole (35) is arranged on the top outer ring of the bearing seat (34), a bearing seat embedded annular gap is arranged between the side vertical surface of the outer ring (14) of the large-diameter double-row self-aligning bearing and the inner side wall of the central hole of the motor end cover (32); the tool is characterized in that a horizontally placed tool disc (38) is connected to the upper top surface of a vertically placed motor rotating shaft (28) through a tool disc fixing bolt (43), lower pull rods are arranged on the same excircle of the tool disc (38) at equal intervals in a radian mode and penetrate through holes (39), threaded lower pressing screw penetrating through holes (40) are arranged on the same circumference of the tool disc (38) with the lower pull rods penetrating through the through holes (39) at equal intervals in a radian mode, an annular plate (42) is movably sleeved on the motor rotating shaft (28) above the large-diameter double-row self-aligning bearing, and the annular plate (42) is arranged between the upper top surface of an inner ring (15) of the large-diameter double-row self-aligning bearing and the upper top surface of an outer ring (14) of the large-diameter double-row self-aligning bearing; the bearing seat (34) is movably sleeved on a motor rotating shaft (28) embedded between the annular gap and the tool disc (38), and the lower end of a lower pull rod (37) sequentially penetrates through the lower pull rod, penetrates through a through hole (39) and a through hole (36) of a connecting bolt of an outer cover of a bearing inner cover arranged on the bearing seat (34), and then is in threaded connection with a mounting screw hole (31) of the bearing inner cover on a bearing inner cover (45); in the downward pressing rod penetrating through hole (40), a downward pressing screw rod (41) is arranged along the direction from top to bottom, and the lower end of the downward pressing screw rod (41) is abutted against the upper top surface of the annular plate (42).

2. The vertical assembly fixture of a large-diameter double-row self-aligning bearing seat according to claim 1, characterized in that a fixture bolt for pressing down the bearing seat (34) is arranged between the fixed bearing seat bolt screwing hole (35) and the bearing seat connecting bolt screwing hole (33), and the bearing seat (34) is pressed down into the bearing seat embedded annular gap by rotating the fixture bolt.

3. The bearing seat assembling method of the vertical assembling tool for the large-diameter double-row self-aligning bearing seat, which is used according to claim 2, is characterized by comprising the following steps:

firstly, rotating a pressing screw (41), enabling the lower end of the pressing screw (41) to be abutted against the upper top surface of an annular plate (42), adjusting each pressing screw (41) on the same circumference, and enabling the annular plate (42) to be in a horizontal state, thereby ensuring that the central axis of an inner ring (15) of a large-diameter double-row self-aligning bearing is overlapped with the central axis of an outer ring (14) of the large-diameter double-row self-aligning bearing;

secondly, the lower end of the lower pull rod (37) is matched with a bearing inner cover installation screw hole (31) by rotating the lower pull rod (37), and the bearing inner cover (45) is abutted to the lower bottom surface of the outer ring (14) of the large-diameter double-row self-aligning bearing after rising;

thirdly, the bearing seat (34) is made to descend to the upper port of the bearing seat embedded annular gap along a lower pull rod (37), and the bearing seat (34) is embedded into the bearing seat embedded annular gap through a tooling bolt for pressing down the bearing seat (34) arranged between a fixed bearing seat bolt threaded hole (35) and a bearing seat connecting bolt threaded hole (33);

fourthly, detaching a tooling bolt arranged between the bolt screwing hole (35) of the fixed bearing seat and the bolt screw hole (33) of the connecting bolt of the bearing seat, replacing the tooling bolt with the fixing bolt of the bearing seat (34), and fixing the bearing seat (34);

fifthly, rotating the lower pull rod (37) to separate the lower pull rod from a bearing inner cover mounting screw hole (31) on a bearing inner cover (45), and then drawing the lower pull rod upwards; removing the fixture disc fixing bolt (43), separating the fixture disc (38) from the motor rotating shaft (28), and moving the fixture disc (38) and the pressing screw rod (41) away from the motor shaft;

and sixthly, sleeving the bearing outer cover on a motor rotating shaft (28), and connecting the bearing inner cover and the bearing outer cover together through the inner cover and outer cover connecting bolts to complete the assembly of the bearing.

Technical Field

The invention relates to a tool for shrink-fitting a bearing on a motor rotating shaft, in particular to a vertical assembly tool for a large-diameter double-row self-aligning bearing seat and an assembly method thereof.

Background

The bearing assembly on the rotating shaft of the wind driven generator rotor is generally completed by two steps, wherein the first step is to thermally sleeve the bearing on the rotating shaft of the motor; the second step is that the bearing seat is firstly installed in the central hole of the motor end cover, and then the bearing seat with the motor end cover is sleeved on the motor rotating shaft, so that the bearing seat is matched with the bearing on the rotating shaft; the prior process for sleeving the bearing on the rotating shaft of the motor in a hot manner comprises the following steps: heating the bearing by using an electromagnetic inductor to expand the inner ring of the bearing; horizontally placing a motor rotating shaft, sleeving the heated bearing on the rotating shaft, and connecting the bearing on the rotating shaft in an interference fit manner after the bearing is cooled; the large-diameter double-row self-aligning bearing is a bearing with an included angle between the central axis of the outer ring of the bearing and the central axis of the inner ring of the bearing capable of being freely adjusted, and the bearing can be used for compensating bending of a shaft and misalignment of a matching surface, namely, the inner ring of the bearing can swing relative to the outer ring of the bearing; when assembling such a bearing to a motor shaft, the following is liable to occur: (1) when the bearing is assembled, the inner ring of the bearing is sleeved on the rotating shaft generally in a mode of clamping the outer ring of the bearing, for the double-row self-aligning bearing, if the central axis of the inner ring of the bearing is not coincident with the central axis of the outer ring of the bearing, the included angle between the central axis of the inner ring of the bearing and the central axis of the outer ring of the bearing is large, the inner ring of the bearing is easy to collide with the rotating shaft during the sleeving of the bearing, the sleeving of the bearing cannot be completed by a light person, and the inner ring of the bearing is damaged by a heavy person; (2) when the included angle between the central axis of the bearing inner ring and the central axis of the bearing outer ring is kept in a small range, the bearing and the rotating shaft can be sleeved, but the phenomenon that the bearing is not sleeved in place can occur, the phenomenon that the assembly process of other subsequent components cannot be normally carried out can be caused, and the sleeved bearing needs to be disassembled and subjected to re-hot sleeve treatment; (3) for a large-diameter double-row self-aligning bearing, the outer diameter of the bearing is more than 1 meter, the weight of the bearing is heavy, and the process of horizontally connecting the bearing on a rotating shaft in a penetrating manner by adopting the traditional bearing is basically infeasible.

When the large-diameter double-row self-aligning bearing is applied to a rotor rotating shaft of a wind driven generator, the size of a motor end cover of the wind driven generator is large due to the large volume of the wind driven generator, and a traditional horizontal end cover assembling method of assembling the bearing and the bearing seat after assembling the bearing seat into a center hole of the motor end cover is adopted, so that the method is basically infeasible; if a vertical assembly method is adopted, the problem that how to overcome the defect that the inner ring of the double-row self-aligning bearing is easy to swing relative to the outer ring of the bearing and how to keep the central axis of the inner ring of the double-row self-aligning bearing to be coincident with the central axis of the outer ring is solved on site.

Disclosure of Invention

The invention provides a vertical assembly tool of a large-diameter double-row self-aligning bearing seat and an assembly method thereof, which solve the technical problem of how to keep the central axis of an inner ring and the central axis of an outer ring of a double-row self-aligning bearing coincident in bearing assembly.

The invention solves the technical problems by the following technical scheme:

the general concept of the invention is: after the large-diameter double-row self-aligning bearing is vertically sleeved on a motor rotating shaft in a hot mode, how to accurately and in-place install the bearing seat between the bearing on the rotating shaft and the inner side wall of the hole of the center hole of the motor end cover is a key problem to be solved by the tool; the invention fully utilizes the connection through holes of the bearing inner cover and the two bearing covers on the bearing seat, a circular tool plate is arranged on the end surface of the motor shaft, a circle of penetration unthreaded holes of a lower pull rod is arranged on the circular tool plate, a circle of screw holes are arranged on the inner circle of the penetration unthreaded hole of the lower pull rod, a lower press rod is abutted on an annular top ring after penetrating the screw holes, the annular top ring is arranged between the upper top surface of the outer ring (14) of the large-diameter double-row self-aligning bearing and the upper top surface of the inner ring (15) of the large-diameter double-row self-aligning bearing, the central axis of the inner ring of the large-diameter double-row self-aligning bearing in an annular hoop is superposed with the central axis of the outer ring, the lower end surface of a lower press rod is abutted on the upper inner end surface of the annular top ring, the lower end of the lower pull rod sequentially penetrates through the penetration unthreaded holes of the lower pull rod arranged on the circular tool plate and the connection through holes of the two bearing covers on the bearing seat and is screwed with the bearing covers, the inner cover of the bearing is installed in place by rotating the lower pull rod, and in the process, the annular top ring ensures that the upper top surface of the outer ring (14) of the large-diameter double-row self-aligning bearing and the upper top surface of the inner ring (15) of the large-diameter double-row self-aligning bearing are on the same plane; then, the bearing seat is put down into an annular gap between a bearing on the rotating shaft and the inner wall of the hole of the center hole of the motor end cover along the lower pull rod, so that the bearing seat is installed in place; and after the bearing seat is installed in place, the lower pull rod and the lower pressing rod are detached, and the outer cover of the bearing is installed in place.

A vertical assembly fixture for a large-diameter double-row self-aligning bearing seat comprises a motor rotating shaft, a motor end cover and a bearing seat which are vertically arranged, a bearing positioning step is arranged on the motor rotating shaft, an inner ring of a large-diameter double-row self-aligning bearing is sleeved on the motor rotating shaft on the bearing positioning step in a heated manner, a bearing inner cover is movably sleeved on the motor rotating shaft below the bearing positioning step, a bearing inner cover mounting screw hole is arranged on the outer ring of the bearing inner cover, a bearing seat connecting bolt screw hole is arranged on the motor end cover outside the central hole, a through hole for connecting a bearing inner cover and an outer cover connecting bolt is arranged on the bearing seat, a bolt threaded hole of the fixed bearing seat is formed in the excircle of the top end of the bearing seat, and a bearing seat embedding annular gap is formed between the side vertical surface of the outer ring of the large-diameter double-row self-aligning bearing and the inner side wall of the central hole of the motor end cover; the upper top surface of a vertically placed motor rotating shaft is connected with a horizontally placed tool disc through a tool disc fixing bolt, pull-down rods are arranged on the same outer circle of the tool disc at equal intervals in a radian mode and penetrate through holes, threaded press-down screw penetrating through holes are arranged on the same circumference of the tool disc, where the pull-down rods penetrate through the through holes, of the tool disc at equal intervals in a radian mode, an annular plate is movably sleeved on the motor rotating shaft above the large-diameter double-row self-aligning bearing and is arranged between the upper top surface of the inner ring of the large-diameter double-row self-aligning bearing and the upper top surface of the outer ring of the large-diameter double-row self-aligning bearing; the bearing seat is movably sleeved on a motor rotating shaft between the embedded annular gap of the bearing seat and the tool disc, and the lower end of the lower pull rod sequentially penetrates through the lower pull rod, penetrates through the through hole and a penetrating through hole of a connecting bolt of an outer cover of the inner bearing cover arranged on the bearing seat and then is screwed with a mounting screw hole of the inner bearing cover on the inner bearing cover; and a lower pressing screw rod is arranged in the lower pressing rod penetrating through hole along the direction from top to bottom, and the lower end of the lower pressing screw rod is abutted on the upper top surface of the annular plate.

A tool bolt for pressing the bearing block is arranged between the bolt screwing hole of the fixed bearing block and the bolt screw hole of the bearing block, and the bearing block is pressed downwards into the annular gap by rotating the tool bolt.

A bearing seat assembling method of a vertical assembling tool for a large-diameter double-row self-aligning bearing seat is characterized by comprising the following steps of:

the method comprises the following steps that firstly, the lower end of a pressing screw is abutted to the upper top surface of an annular plate by rotating the pressing screw, and the pressing screws on the same circumference are adjusted to enable the annular plate to be in a horizontal state, so that the central axis of an inner ring of the large-diameter double-row self-aligning bearing is enabled to be coincident with the central axis of an outer ring of the large-diameter double-row self-aligning bearing;

secondly, rotating the lower pull rod to enable the lower end of the lower pull rod to be matched with a bearing inner cover mounting screw hole, and enabling the bearing inner cover to be abutted to the lower bottom surface of the outer ring of the large-diameter double-row self-aligning bearing after rising;

thirdly, the bearing seat is made to descend to the upper port of the annular gap where the bearing seat is embedded along the lower pull rod, and the bearing seat is embedded into the annular gap through a tool bolt which is arranged between a bolt threaded hole of the fixed bearing seat and a bolt threaded hole of a connecting bolt of the bearing seat and presses the bearing seat;

fourthly, removing a tool bolt arranged between the bolt screwing hole of the fixed bearing seat and the bolt screw hole of the connecting bolt of the bearing seat, replacing the tool bolt with the fixed bolt of the bearing seat, and fixing the bearing seat;

fifthly, rotating the lower pull rod to separate the lower pull rod from a bearing inner cover mounting screw hole on a bearing inner cover, and then drawing the lower pull rod upwards; removing the fixing bolt of the tool disc, separating the tool disc from the rotating shaft of the motor, and moving the tool disc and the pressing screw rod away from the motor shaft;

and sixthly, sleeving the bearing outer cover on the motor rotating shaft, and connecting the bearing inner cover and the bearing outer cover together through the inner cover and outer cover connecting bolts to complete the assembly of the bearing.

A vertical hot jacket large-diameter double-row self-aligning bearing tool on a motor rotating shaft comprises the motor rotating shaft, a large-diameter double-row self-aligning bearing, a left semi-annular hoop and a right semi-annular hoop which are vertically positioned, wherein a crown block lifting hook is arranged right above the motor rotating shaft and is connected with a lifting disc through a lifting rope in a lifting mode, the lifting disc is arranged along the horizontal direction, and a first lifting ring, a second lifting ring and a third lifting ring are arranged on one concentric circumference on the lower bottom surface of the lifting disc at equal intervals in a radian mode; after the left semi-annular hoop and the right semi-annular hoop are in butt joint, the left semi-annular hoop and the right semi-annular hoop are clamped on an outer side vertical surface of an outer ring of the large-diameter double-row self-aligning bearing, a front connecting bolt is arranged between the end part of a front side bayonet of the left semi-annular hoop and the end part of a front side bayonet of the right semi-annular hoop, and a rear connecting bolt is arranged between the end part of a rear side bayonet of the left semi-annular hoop and the end part of a rear side bayonet of the right semi-annular hoop; a first lifting lug, a first pin shaft and a second lifting lug are fixedly arranged on the outer side vertical surface of the left semi-annular hoop respectively, and a second pin shaft, a third lifting lug and a third pin shaft are fixedly arranged on the outer side vertical surface of the right semi-annular hoop respectively; a first turn buckle is connected between the first lifting lug and the first lifting ring, a second turn buckle is connected between the second lifting lug and the second lifting ring, and a third turn buckle is connected between the third lifting lug and the third lifting ring; a first swing arm supporting plate is movably arranged at the lower end of the first pin shaft, and the first swing arm supporting plate is arranged between the lower bottom surface of the outer ring of the large-diameter double-row self-aligning bearing and the lower bottom surface of the inner ring of the large-diameter double-row self-aligning bearing; a second swing arm supporting plate is movably arranged at the lower end of the second pin shaft and arranged between the lower bottom surface of the outer ring of the large-diameter double-row self-aligning bearing and the lower bottom surface of the inner ring of the large-diameter double-row self-aligning bearing; and a third swing arm supporting plate is movably arranged at the lower end of the third pin shaft and is arranged between the lower bottom surface of the outer ring of the large-diameter double-row self-aligning bearing and the lower bottom surface of the inner ring of the large-diameter double-row self-aligning bearing.

A first swing arm pressing plate is movably arranged at the upper end of the first pin shaft and is arranged between the upper top surface of the outer ring of the large-diameter double-row self-aligning bearing and the upper top surface of the inner ring of the large-diameter double-row self-aligning bearing; a second swing arm pressing plate is movably arranged at the upper end of the second pin shaft and is arranged between the upper top surface of the outer ring of the large-diameter double-row self-aligning bearing and the upper top surface of the inner ring of the large-diameter double-row self-aligning bearing; a third swing arm pressing plate is movably arranged at the upper end of the third pin shaft and is arranged between the upper top surface of the outer ring of the large-diameter double-row self-aligning bearing and the upper top surface of the inner ring of the large-diameter double-row self-aligning bearing; a left semi-annular elastic cushion is arranged between the left semi-annular hoop and the outer ring of the large-diameter double-row self-aligning bearing, and a right semi-annular elastic cushion is arranged between the right semi-annular hoop and the outer ring of the large-diameter double-row self-aligning bearing.

Left semi-annular staple bolt, right semi-annular staple bolt and major diameter biserial self-aligning bearing that the joint is in the same place preheat through following step before the hoist and mount:

firstly, butt-jointing a left semi-annular hoop and a right semi-annular hoop, clamping the left semi-annular hoop and the right semi-annular hoop on the outer side surface of an outer ring of the large-diameter double-row self-aligning bearing, and respectively connecting a front connecting bolt and a rear connecting bolt between the end parts of the two hoops; a left semi-annular elastic cushion is arranged between the left semi-annular hoop and the outer ring of the large-diameter double-row self-aligning bearing, and a right semi-annular elastic cushion is arranged between the right semi-annular hoop and the outer ring of the large-diameter double-row self-aligning bearing; the heat-resistant temperature of the left semi-annular elastic cushion and the right semi-annular elastic cushion is 180 ℃;

secondly, respectively rotating the first swing arm supporting plate, the second swing arm supporting plate and the third swing arm supporting plate to a position between the lower bottom surface of the outer ring of the large-diameter double-row self-aligning bearing and the lower bottom surface of the inner ring of the large-diameter double-row self-aligning bearing, so that the central axis of the outer ring of the large-diameter double-row self-aligning bearing is superposed with the central axis of the inner ring of the large-diameter double-row self-aligning bearing;

and thirdly, placing the tool and the large-diameter double-row self-aligning bearing assembled in the second step into an oven to be heated to 120 ℃.

The bearing hot sleeve tool adopts a method of putting the bearing and the clamping tool into an oven for heating, so that the bearing is heated uniformly; in the process of hoisting the bearing to be sleeved on the rotating shaft of the motor, a vertical sleeving method is adopted, the defect that the horizontal sleeving of a large-size bearing is not easy to operate is overcome, and the inner ring and the outer ring of the bearing are always kept coincident with each other by limiting the supporting plate on the hoop; the bearing seat assembling tool fully utilizes all parts, positions the bearing inner ring, and ensures that the central axis of the bearing outer ring is coincident with the central axis of the inner ring in the assembling process of the bearing seat in the form of the upper pull rod and the lower press rod; the assembly of the double-row self-aligning bearing in place is realized, the tool structure is simple, and the field operation is easy.

Drawings

FIG. 1 is a schematic view of a tooling structure during assembly of a bearing seat of the present invention;

FIG. 2 is a schematic view of the structure of the tool after the bearing is sleeved on the rotating shaft of the motor;

FIG. 3 is a schematic structural view of the bearing of the present invention when it is hoisted above the motor shaft;

fig. 4 is a schematic structural diagram of the left half-ring hoop 1 and the right half-ring hoop 2 of the present invention;

FIG. 5 is a schematic structural diagram of the large-diameter double-row self-aligning bearing of the present invention after being clamped by two hoops.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

a vertical assembly fixture of a large-diameter double-row self-aligning bearing seat comprises a vertically-placed motor rotating shaft 28, a motor end cover 32 and a bearing seat 34, wherein a bearing positioning step 44 is arranged on the motor rotating shaft 28, an inner ring 15 of the large-diameter double-row self-aligning bearing is sleeved on the motor rotating shaft on the bearing positioning step 44 in a hot manner, a bearing inner cover 45 is movably sleeved on the motor rotating shaft 28 below the bearing positioning step 44, a bearing inner cover mounting screw hole 31 is arranged on the outer ring of the bearing inner cover 45, a bearing seat connecting bolt screw hole 33 is arranged on the motor end cover 32 outside a central hole, a through hole 36 of a bearing inner cover outer cover connecting bolt is arranged on the bearing seat 34, a bearing seat bolt screw hole 35 is fixed on the outer ring at the top end of the bearing seat 34, a side vertical surface of an outer ring 14 of the large-diameter double-row self-aligning bearing and the inner side wall of the central hole of the motor end cover 32, a bearing seat is embedded into the annular gap; a horizontally placed tool disc 38 is connected to the upper top surface of the vertically placed motor rotating shaft 28 through a tool disc fixing bolt 43, pull-down rods are arranged on the same excircle of the tool disc 38 at equal intervals in a radian mode and penetrate through holes 39, threaded press-down screw penetrating through holes 40 are arranged on the same circumference of the tool disc 38, where the pull-down rods penetrate through the through holes 39, at equal intervals in a radian mode, a ring-shaped plate 42 is movably sleeved on the motor rotating shaft 28 above the large-diameter double-row self-aligning bearing, and the ring-shaped plate 42 is arranged between the upper top surface of the inner ring 15 of the large-diameter double-row self-aligning bearing and the upper top surface of the outer ring 14 of the large-diameter double-row self-aligning bearing; the bearing seat 34 is movably sleeved on the motor rotating shaft 28 with the bearing seat 34 embedded between the annular gap and the tool disc 38, and the lower end of the lower pull rod 37 sequentially penetrates through the lower pull rod, penetrates through a through hole 39 and a through hole 36 of a connecting bolt of an outer cover of the inner bearing cover arranged on the bearing seat 34, and then is in threaded connection with a mounting screw hole 31 of the inner bearing cover on the inner bearing cover 45; in the lower pressing rod penetration through hole 40, a lower pressing screw 41 is provided in a direction from top to bottom, and a lower end of the lower pressing screw 41 abuts on an upper top surface of the annular plate 42.

A tool bolt for pressing down the bearing housing 34 is provided between the fixed bearing housing bolt screwing hole 35 and the bearing housing connecting bolt screwing hole 33, and the bearing housing 34 is pressed down into the bearing housing embedding annular gap by rotating the tool bolt.

A bearing seat assembling method of a vertical assembling tool for a large-diameter double-row self-aligning bearing seat is characterized by comprising the following steps of:

firstly, rotating a lower pressing screw 41 to enable the lower end of the lower pressing screw 41 to be abutted against the upper top surface of an annular plate 42, adjusting each lower pressing screw 41 on the same circumference to enable the annular plate 42 to be in a horizontal state, and accordingly ensuring that the central axis of an inner ring 15 of a large-diameter double-row self-aligning bearing is overlapped with the central axis of an outer ring 14 of the large-diameter double-row self-aligning bearing;

secondly, the lower end of the lower pull rod 37 is matched with the bearing inner cover installation screw hole 31 by rotating the lower pull rod 37, so that the bearing inner cover 45 is abutted to the lower bottom surface of the outer ring 14 of the large-diameter double-row self-aligning bearing after rising;

thirdly, the bearing seat 34 is lowered to the upper port of the bearing seat embedding annular gap along the lower pull rod 37, and the bearing seat 34 is embedded into the bearing seat embedding annular gap through a tooling bolt which is arranged between the fixed bearing seat bolt threaded hole 35 and the bearing seat connecting bolt threaded hole 33 and presses the bearing seat 34 downwards;

fourthly, removing the tool bolt arranged between the bolt screwing hole 35 of the fixed bearing seat and the bolt screwing hole 33 of the connecting bolt of the bearing seat, replacing the tool bolt with the fixed bolt of the bearing seat 34, and fixing the bearing seat 34;

fifthly, rotating the lower pull rod 37 to separate the lower pull rod from the bearing inner cover mounting screw hole 31 on the bearing inner cover 45, and then drawing the lower pull rod upwards; removing the fixture disc fixing bolt 43, separating the fixture disc 38 from the motor rotating shaft 28, and moving the fixture disc 38 and the lower pressing screw 41 away from the motor shaft;

and sixthly, sleeving the bearing outer cover on the motor rotating shaft 28, and connecting the bearing inner cover and the bearing outer cover together through the inner cover and outer cover connecting bolts to complete the assembly of the bearing.

A vertical hot jacket large-diameter double-row self-aligning bearing tool on a motor rotating shaft comprises a motor rotating shaft 28, a large-diameter double-row self-aligning bearing, a left semi-annular hoop 1 and a right semi-annular hoop 2 which are vertically positioned, wherein a crown block lifting hook 26 is arranged right above the motor rotating shaft 28, the crown block lifting hook 26 is connected with a lifting disc 25 in a hanging mode through a lifting rope 27, the lifting disc 25 is arranged along the horizontal direction, and a first hanging ring 20, a second hanging ring 22 and a third hanging ring 24 are arranged on a concentric circumference on the lower bottom surface of the lifting disc 25 at equal intervals in a radian mode; after the left semi-annular hoop 1 and the right semi-annular hoop 2 are butted, the left semi-annular hoop 1 and the right semi-annular hoop 2 are clamped on the outer side vertical surface of an outer ring 14 of the large-diameter double-row self-aligning bearing, a front connecting bolt 3 is arranged between the end part of a front side bayonet of the left semi-annular hoop 1 and the end part of a front side bayonet of the right semi-annular hoop 2, and a rear connecting bolt 4 is arranged between the end part of a rear side bayonet of the left semi-annular hoop 1 and the end part of a rear side bayonet of the right semi-annular hoop 2; a first lifting lug 16, a first pin shaft 5 and a second lifting lug 17 are fixedly arranged on the outer side vertical surface of the left semi-annular hoop 1 respectively, and a second pin shaft 8, a third lifting lug 18 and a third pin shaft 11 are fixedly arranged on the outer side vertical surface of the right semi-annular hoop 2 respectively; a first turn buckle 19 is connected between the first lifting lug 16 and the first lifting ring 20, a second turn buckle 21 is connected between the second lifting lug 17 and the second lifting ring 22, and a third turn buckle 23 is connected between the third lifting lug 18 and the third lifting ring 24; a first swing arm supporting plate 7 is movably arranged at the lower end of the first pin shaft 5, and the first swing arm supporting plate 7 is arranged between the lower bottom surface of an outer ring 14 of the large-diameter double-row self-aligning bearing and the lower bottom surface of an inner ring 15 of the large-diameter double-row self-aligning bearing; a second swing arm supporting plate 10 is movably arranged at the lower end of the second pin shaft 8, and the second swing arm supporting plate 10 is arranged between the lower bottom surface of an outer ring 14 of the large-diameter double-row self-aligning bearing and the lower bottom surface of an inner ring 15 of the large-diameter double-row self-aligning bearing; a third swing arm supporting plate 13 is movably arranged at the lower end of the third pin shaft 11, and the third swing arm supporting plate 13 is arranged between the lower bottom surface of an outer ring 14 of the large-diameter double-row self-aligning bearing and the lower bottom surface of an inner ring 15 of the large-diameter double-row self-aligning bearing.

A first swing arm pressing plate 6 is movably arranged at the upper end of the first pin shaft 5, and the first swing arm pressing plate 6 is arranged between the upper top surface of an outer ring 14 of the large-diameter double-row self-aligning bearing and the upper top surface of an inner ring 15 of the large-diameter double-row self-aligning bearing; a second swing arm pressing plate 9 is movably arranged at the upper end of the second pin shaft 8, and the second swing arm pressing plate 9 is arranged between the upper top surface of an outer ring 14 of the large-diameter double-row self-aligning bearing and the upper top surface of an inner ring 15 of the large-diameter double-row self-aligning bearing; a third swing arm pressing plate 12 is movably arranged at the upper end of the third pin shaft 11, and the third swing arm pressing plate 12 is arranged between the upper top surface of an outer ring 14 of the large-diameter double-row self-aligning bearing and the upper top surface of an inner ring 15 of the large-diameter double-row self-aligning bearing; a left semi-annular elastic cushion 29 is arranged between the left semi-annular hoop 1 and the outer ring 14 of the large-diameter double-row self-aligning bearing, and a right semi-annular elastic cushion 30 is arranged between the right semi-annular hoop 2 and the outer ring 14 of the large-diameter double-row self-aligning bearing.

Left semi-annular staple bolt 1, right semi-annular staple bolt 2 and major diameter biserial self-aligning bearing that the joint is in the same place preheat through following step before the hoist and mount:

firstly, a left semi-annular hoop 1 and a right semi-annular hoop 2 are butted and then clamped on the outer side surface of an outer ring 14 of a large-diameter double-row self-aligning bearing, and a front connecting bolt 3 and a rear connecting bolt 4 are respectively connected between the end parts of the two hoops; a left semi-annular elastic cushion 29 is arranged between the left semi-annular hoop 1 and the outer ring 14 of the large-diameter double-row self-aligning bearing, and a right semi-annular elastic cushion 30 is arranged between the right semi-annular hoop 2 and the outer ring 14 of the large-diameter double-row self-aligning bearing; the heat-resistant temperature of the left semi-annular elastic cushion 29 and the right semi-annular elastic cushion 30 is 180 degrees centigrade;

secondly, respectively rotating the first swing arm supporting plate 7, the second swing arm supporting plate 10 and the third swing arm supporting plate 13 to a position between the lower bottom surface of the outer ring 14 of the large-diameter double-row self-aligning bearing and the lower bottom surface of the inner ring 15 of the large-diameter double-row self-aligning bearing, so that the central axis of the outer ring 14 of the large-diameter double-row self-aligning bearing is superposed with the central axis of the inner ring 15 of the large-diameter double-row self-aligning bearing;

and thirdly, placing the tool and the large-diameter double-row self-aligning bearing assembled in the second step into an oven to be heated to 120 ℃.

After the large-diameter double-row self-aligning bearing and the hoop hoisting tool are assembled together, the central axis of the inner ring of the bearing is superposed with the central axis of the outer ring through the supporting plate and the pressing plate on the tool, and preheating is carried out in the state; after preheating, hoisting, leveling the bearing by using a turnbuckle, enabling the central axis of the bearing to coincide with the central axis of the rotating shaft, rotating the three swing arm supporting plates to enable the three swing arm supporting plates to leave the lower bottom surface of the bearing when the bearing falls onto the upper part of the bearing positioning step on the rotating shaft, then continuing to descend the bearing to enable the bearing to be accurately positioned on the bearing positioning step 44, and in the descending process, keeping three swing arm pressing plates between the upper top surface of the inner ring and the upper top surface of the outer ring of the bearing, thereby ensuring the coincidence of the central axis of the inner ring and the central axis of the outer ring; the tool ensures that the central axis of the inner ring and the central axis of the outer ring coincide in the whole process from preheating to hot sleeving of the bearing, and lays a foundation for sleeving the bearing on the rotating shaft.