CN109605267B

CN109605267B - Installation tool for lifting unit

Info

Publication number: CN109605267B
Application number: CN201910011305.5A
Authority: CN
Inventors: 黄波
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2021-07-27
Anticipated expiration: 2039-01-07
Also published as: CN109605267A

Abstract

The invention discloses an installation tool of a lifting unit. The mounting tool comprises a bearing connecting plate, a supporting plate, a pull rod and a tension assembly, wherein the bearing connecting plate is provided with a plurality of first screw holes and a plurality of second screw holes, the plurality of first screw holes and the plurality of second screw holes are circumferentially distributed, the diameter of the circumference distributed by the plurality of first screw holes is the same as that of the circumference distributed by a bearing cover mounting hole on a first bearing, the diameter of the circumference distributed by the plurality of second screw holes is the same as that of the circumference distributed by a torque sensor mounting hole on the first bearing, the pull rod is coaxially connected with the bearing connecting plate, the supporting plate is coaxially sleeved on the pull rod through an inserting hole, the supporting plate is provided with a plurality of fixed mounting holes, the plurality of fixed mounting holes are distributed along the circumferential direction of the supporting plate, after the first bearing and the second bearing are inserted into the bearing seat, the first bearing is pulled through the tension assembly, so that the whole lifting unit moves along the axial direction of the bearing seat, and the lifting unit is accurately installed in place.

Description

Installation tool for lifting unit

Technical Field

The invention relates to the technical field of lifting platforms, in particular to an installation tool of a lifting unit.

Background

The lifting unit is a power structure of the ocean lifting platform and is used for driving the whole lifting platform to lift.

The lifting unit comprises a motor, a speed reducer, a climbing gear and a gear shaft. The rotating shaft of the motor is connected with the input shaft of the speed reducer, the output shaft of the speed reducer is coaxially connected with the gear shaft, the climbing gear sleeve is arranged on the gear shaft, the two ends of the gear shaft are respectively provided with a first bearing and a second bearing, the second bearing is located between the climbing gear and the speed reducer, and the diameter of the first bearing is smaller than that of the second bearing.

The lifting unit is arranged on a lifting unit mounting frame on the pile fixing frame, the lifting unit mounting frame is provided with two bearing seats which are coaxial and arranged at intervals, and the inner diameters of the two bearing seats are different. When the lifting unit is installed, the lifting unit is hoisted by adopting a lifting appliance, the gear shaft is inserted from one side of the bearing seat with the larger inner diameter, the first bearing is inserted into the bearing seat with the smaller inner diameter, and the second bearing is inserted into the bearing seat with the larger inner diameter. Due to the heavy weight of the lifting unit, it is inconvenient to accurately install the lifting unit along the axial direction of the bearing block during installation.

Disclosure of Invention

The embodiment of the invention provides a mounting tool for a lifting unit, which is convenient for precisely mounting the lifting unit along the axial direction of a bearing seat. The technical scheme is as follows:

the embodiment of the invention provides an installation tool of a lifting unit, wherein the lifting unit comprises a climbing gear and a gear shaft, the climbing gear is sleeved on the gear shaft, one end of the gear shaft is provided with a first bearing, the other end of the gear shaft is provided with a second bearing, the outer diameter of the first bearing is smaller than that of the second bearing, the installation tool comprises a circular bearing connecting plate, a circular supporting plate, a pull rod and a tension assembly, the diameter of the bearing connecting plate is smaller than that of the first bearing, the bearing connecting plate is provided with a plurality of first screw holes and a plurality of second screw holes, the plurality of first screw holes and the plurality of second screw holes are distributed along the circumferential direction of the bearing connecting plate, the diameter of the circumference distributed by the plurality of first screw holes is the same as that of the circumference distributed by bearing cover installation holes on the first bearing, the diameter of the circumference that a plurality of second screw holes distribute with the diameter of the circumference that torque sensor mounting hole on the first bearing distributes is the same, the pull rod with bearing connecting plate coaxial coupling, the diameter of backup pad is greater than the external diameter of first bearing, the middle part of backup pad is equipped with the cartridge hole, the backup pad passes through the coaxial suit of cartridge hole is in on the pull rod, a plurality of fixed mounting holes have in the backup pad, a plurality of fixed mounting holes are followed the circumference of backup pad distributes, the diameter of the circumference that a plurality of fixed mounting holes distribute is located the installation between the internal diameter and the external diameter of the bearing frame of first bearing, the pulling force subassembly is used for following the axial pulling of pull rod the pull rod.

Optionally, the pull rod is a threaded rod, the tension assembly includes a threaded sleeve, and the threaded sleeve is sleeved on the pull rod and is in threaded connection with the pull rod.

Optionally, a jack is arranged on the wall of the threaded sleeve, the jack is not communicated with the inner wall of the threaded sleeve, the axis of the jack is perpendicular to the axis of the threaded sleeve, and a rotating rod is inserted into the jack.

Optionally, two insertion holes are arranged on the pipe wall of the threaded sleeve, and the two insertion holes are centrosymmetric with respect to the axis of the threaded sleeve.

Optionally, the pulling force subassembly still includes the bearing block, the bearing block is the round platform type, coaxial through-hole has on the bearing block, the bearing block passes through the through-hole suit is in on the pull rod, the bearing block is located the threaded sleeve pipe with between the backup pad, just the great terminal surface orientation of area of bearing block the backup pad.

Optionally, a counter bore is respectively arranged on the bearing connecting plate corresponding to each first screw hole and each second screw hole, and the counter bores are located on the surface of the bearing connecting plate facing the supporting plate.

Optionally, a plurality of hollowed-out openings are arranged on the supporting plate.

Optionally, a circular groove is formed in the supporting plate, the circular groove is located on the surface, facing the bearing connecting plate, of the supporting plate, the circular groove is coaxial with the supporting plate, and the diameter of the circular groove is the same as that of the bearing connecting plate.

Optionally, an annular positioning boss is coaxially arranged on the support plate, the annular positioning boss is located on the surface of the support plate facing the bearing connecting plate, and the outer diameter of the annular positioning boss is the same as the inner diameter of a bearing seat for mounting the first bearing.

Optionally, a plurality of lightening holes are formed in the bearing connecting plate.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: through setting up the bearing connecting plate, be provided with a plurality of first screws and a plurality of second screw on the bearing connecting plate for the bearing connecting plate can be connected with the bearing cap mounting hole on the first bearing through a plurality of first screws, is connected with the torque sensor mounting hole on the first bearing through a plurality of second screws, thereby is connected to the bearing connecting plate on the terminal surface of first bearing. Through setting up the backup pad, be provided with a plurality of fixed mounting holes in the backup pad, the diameter of the circumference that a plurality of fixed mounting holes distribute is located between the internal diameter and the external diameter of the bearing frame of installation first bearing for the backup pad can be installed on the bearing frame through a plurality of fixed mounting holes. Through installing the pull rod on the bearing connecting plate, and be equipped with the cartridge hole in the backup pad, the pull rod is inserted and is established in the cartridge hole to set up the pulling force subassembly that is used for pulling the pull rod, just so can be after inserting first bearing and second axle socket joint into the bearing frame through pulling force subassembly pulling first bearing, make the whole axial displacement along the bearing frame of elevating unit, thereby conveniently finely tune the elevating unit along the axial of bearing frame when installing the elevating unit, make the elevating unit install the target in place accurately.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a portion of a lift platform;

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

FIG. 3 is an enlarged, fragmentary illustration of a lift platform;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

fig. 5 is a schematic view illustrating an installation process of a lifting unit according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an installation tool according to an embodiment of the present invention;

fig. 7 is a schematic partial structural diagram of an installation tool according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another installation tool provided in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a supporting plate according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a partial structural schematic view of a lifting platform. As shown in fig. 1, the elevating platform includes legs 11 and an elevating unit mounting frame 12. The leg 11 is provided with a rack 111. The elevating unit mounting frame 12 is provided on the spud leg 11, and the elevating units 20 are inserted into the elevating unit mounting frame 12. Fig. 2 is a top view of fig. 1. As shown in fig. 2, the leg 11 is a triangular truss leg. Other forms of legs exist, such as cylindrical legs, etc.

Fig. 3 is a partially enlarged schematic view of a lift platform. As shown in fig. 3, the elevating unit 20 includes a motor 21, a reducer 22, a climbing gear 23, and a gear shaft 24. The rotating shaft of the motor 21 is connected with the input shaft of the speed reducer 22, the output shaft of the speed reducer 22 is coaxially connected with the gear shaft 24, and the climbing gear 23 is sleeved on the gear shaft 24. One end of the gear shaft 24 is connected with a first bearing 31, and the other end is connected with a second bearing 32, and the diameter of the first bearing 31 is smaller than that of the second bearing 32.

Fig. 4 is a partially enlarged schematic view of fig. 3. As shown in fig. 4, a bearing cap mounting hole 31a and a torque sensor mounting hole 31b are provided on an end surface of the first bearing 31, the bearing cap mounting hole 31a is located on an outer ring of the first bearing 31, and the torque sensor mounting hole 31b is located on an inner ring of the first bearing 31. The bearing cap mounting hole 31a is used for mounting the bearing cap 311, and the torque sensor mounting hole 31b is used for mounting the torque sensor 312. When the lifting unit is attached, the first bearing 31 is attached to the first bearing housing 121, and the second bearing 32 is attached to the second bearing housing 122. The inner diameter of the first bearing seat 121 is 430mm, and the fit clearance between the first bearing 31 and the first bearing seat 121 is 0.15 mm-0.27 mm. The inner diameter of second bearing seat 122 is 760mm, and the fit clearance between second bearing 32 and second bearing seat 122 is 0.48mm to 0.69 mm. In the lifting unit 20, the weight of only the decelerator 22 reaches 4800kg, so that it is necessary to use a hanger at the time of installation, and it is inconvenient to finely adjust the position of the lifting unit 20 in the axial direction of the gear shaft 24.

Fig. 5 is a schematic view of an installation process of a lifting unit according to an embodiment of the present invention. Fig. 6 is a schematic structural diagram of an installation tool according to an embodiment of the present invention. Referring to fig. 5 and 6, the installation tool of the lifting unit 20 includes a circular bearing connection plate 41, a circular support plate 42, a pull rod 43, and a tension assembly.

The bearing connecting plate 41 has a diameter smaller than the outer diameter of the first bearing 31, and the bearing connecting plate 41 has a plurality of first screw holes 41a and a plurality of second screw holes 41 b. The plurality of first screw holes 41a and the plurality of second screw holes 41b are each distributed along the circumferential direction of the bearing attachment plate 41. The diameter of the circumference on which the plurality of first screw holes 41a are distributed is the same as the diameter of the circumference on which the bearing cap mounting holes 31a on the first bearing 31 are distributed. The diameter of the circumference on which the plurality of second screw holes 41b are distributed is the same as the diameter of the circumference on which the torque sensor mounting holes 31b on the first bearing 31 are distributed.

The tie rod 43 is coaxially connected to the bearing connecting plate 41.

The diameter of the support plate 42 is larger than the outer diameter of the first bearing 31, an insertion hole 42a is formed in the middle of the support plate 42, and the support plate 42 is coaxially sleeved on the pull rod 43 through the insertion hole 42 a. The support plate 42 has a plurality of fixing holes 42b, the plurality of fixing holes 42b are distributed along a circumferential direction of the support plate 42, and a diameter of a circumference where the plurality of fixing holes 42b are distributed is between an inner diameter and an outer diameter of a bearing housing where the first bearing 31 is mounted.

The pulling force assembly is used for pulling the pulling rod 43 in the axial direction of the pulling rod 43.

Through setting up the bearing connecting plate, be provided with a plurality of first screws and a plurality of second screw on the bearing connecting plate for the bearing connecting plate can be connected with the bearing cap mounting hole on the first bearing through a plurality of first screws, is connected with the torque sensor mounting hole on the first bearing through a plurality of second screws, thereby is connected to the bearing connecting plate on the terminal surface of first bearing. Through setting up the backup pad, be provided with a plurality of fixed mounting holes in the backup pad, the diameter of the circumference that a plurality of fixed mounting holes distribute is located between the internal diameter and the external diameter of the bearing frame of installation first bearing for the backup pad can be installed on the bearing frame through a plurality of fixed mounting holes. Through installing the pull rod on the bearing connecting plate, and be equipped with the cartridge hole in the backup pad, the pull rod is inserted and is established in the cartridge hole to set up the pulling force subassembly that is used for pulling the pull rod, just so can be after going into first bearing and second axle socket joint to the bearing frame in through pulling force subassembly pulling first bearing, make the whole axial displacement along the bearing frame of elevating unit, thereby conveniently finely tune the elevating unit along the axial of bearing frame when installing the elevating unit, thereby make the elevating unit install the accuracy and target in place.

Illustratively, the number of the fixing holes 42b may be 6 to 8, the number of the first screw holes 41a may be 6 to 8, and the number of the second screw holes 41b may be 6 to 8. In the present embodiment, the fixing attachment holes 42b, the first screw holes 41a, and the second screw holes 41b are provided in 6 numbers. The fixing mounting holes 42b, the first screw holes 41a, and the second screw holes 41b may be uniformly distributed in the circumferential direction.

When the support plate 42 and the first bearing housing 121 are connected, a bolt of type M12 may be used, and when the bearing connecting plate 41 and the first bearing 31 are connected, a bolt of type M12 may be used.

The pull rod 43 may be a threaded rod. The pulling force assembly may include a threaded sleeve 44, the threaded sleeve 44 being fitted over the pulling rod 43 and threadedly coupled to the pulling rod 43. When the lifting unit is installed, the threaded sleeve 44 is screwed to make one end of the threaded sleeve 44 abut against the support plate 42, and since the support plate 42 can be fixed on the first bearing seat 121 through the fixing and installing hole 42b, when the threaded sleeve 44 is screwed, the pull rod 43 moves relative to the threaded sleeve 44, so that the first bearing 31 is pulled along the axial direction of the pull rod 43, the first bearing 31 and the second bearing 32 are installed in place, and the climbing gear 23 is well meshed with the rack 111 on the pile leg 11.

Illustratively, the length of the tie rod 43 may be 500mm to 700 mm. In the present embodiment, the length of the tie rod 43 is 600 mm. The threaded sleeve 44 may have a diameter of 30mm to 40 mm. In this embodiment, the threaded sleeve 44 has a diameter of 36 mm.

Fig. 7 is a schematic partial structural diagram of an installation tool according to an embodiment of the present invention. As shown in fig. 7, a socket 44a may be provided on a wall of the threaded sleeve 44, the socket 44a is not communicated with an inner wall of the threaded sleeve 44, an axis of the socket 44a is perpendicular to an axis of the threaded sleeve 44, and a rotating rod 441 is inserted into the socket 44 a. By providing the insertion hole 44a and inserting the rotating rod 441 in the insertion hole 44a, it is easier to screw the threaded bushing 44, and it is easier to screw the threaded bushing 44 to rotate by a small angle, for example, 30 °, 10 °, etc., when screwing the threaded bushing 44, thereby facilitating fine adjustment of the lifting unit. After the installation tool is dismounted, the rotating rod 441 can be pulled out, and the rotating rod 441 is separated from the threaded sleeve 44, so that the storage is convenient.

Alternatively, two insertion holes 44a may be provided in the wall of the threaded sleeve 44, and the two insertion holes 44a are symmetrical with respect to the axis center of the threaded sleeve 44. By providing two insertion holes 44a, two rotating rods 441 can be mounted on the threaded sleeve 44, so that the stress on the threaded sleeve 44 is more balanced and the rotation of the threaded sleeve 44 is more stable when the threaded sleeve 44 is screwed.

The cross-sectional shape of the threaded sleeve 44 shown in fig. 7 is merely illustrative, and in other embodiments, the cross-section of the threaded sleeve 44 may have other shapes, such as a regular polygon.

Fig. 8 is a schematic structural diagram of another installation tool provided in the embodiment of the present invention. As shown in fig. 8, the tension assembly may further include a bearing block 45. The bearing block 45 is in the shape of a circular truncated cone. The bearing block 45 is provided with a coaxial through hole, the bearing block 45 is sleeved on the pull rod 43 through the through hole, the bearing block 45 is positioned between the threaded sleeve 44 and the support plate 42, and the end face with the larger area of the bearing block 45 faces the support plate 42. The threaded sleeve 44 has a small end surface area and a large pressure against the support plate 42, resulting in deformation of the support plate 42 and easily damaging the surface of the support plate 42. The bearing block 45 is a circular truncated cone, and an end face area of the bearing block 45 is large, and another end face area is small, and through setting up the bearing block 45, when the installation lifting unit, the great terminal surface of the area that makes the bearing block 45 presses on the backup pad 42, just so can increase the lifting surface area of backup pad 42 to reduce backup pad 42 pressure on the surface, can reduce backup pad 42's deformation, the surface of backup pad 42 also is difficult to damage. When the threaded sleeve 44 is screwed, the threaded sleeve 44 is in contact with the end face with the smaller area of the bearing block 45, and when the end face with the smaller area of the bearing block 45 is abraded greatly, only the bearing block 45 can be replaced, so that the service life of the installation tool is prolonged.

Alternatively, the pull rod 43 may be further provided with an anti-rotation hole 43a, and an anti-rotation rod 431 may be inserted into the anti-rotation hole 43a, since the pull rod 43 may rotate together with the threaded sleeve 44 when the threaded sleeve 44 is screwed, the pull rod 43 may be prevented from rotating by the anti-rotation rod 431 when the threaded sleeve 44 is screwed by providing the anti-rotation rod 431. In addition, a tool may be used to directly grip the pull rod 43 to prevent the pull rod 43 from rotating.

As shown in fig. 8, the bearing connection plate 41 may be provided with a counter bore 41c corresponding to each of the first screw holes 41a and each of the second screw holes 41b, respectively, and the counter bore 41c is located on a surface of the bearing connection plate 41 facing the support plate 42. Since the axial length of the first bearing seat 121 is limited, by providing the counterbore 41c, after the bearing connecting plate 41 is connected with the first bearing 31, the head of the bolt is located in the counterbore 41c and does not protrude out of the bearing connecting plate 41, so that the bearing connecting plate 41 and the first bearing 31 have a larger axial movement space, and can move to the maximum extent that the bearing connecting plate 41 is attached to the support plate 42.

Fig. 9 is a schematic structural diagram of a supporting plate according to an embodiment of the present invention. As shown in fig. 9, the supporting plate 42 may be provided with a plurality of cutout openings 42 d. The weight of the supporting plate 42 can be reduced by arranging the hollow-out openings 42d, and the tool is convenient to mount.

As shown in fig. 8, the supporting plate 42 may further be coaxially provided with an annular positioning boss 421, the annular positioning boss 421 is located on a surface of the supporting plate 42 facing the bearing connecting plate 41, and an outer diameter of the annular positioning boss 421 is the same as an inner diameter of a bearing seat for mounting the first bearing 31. Thus, when the support plate 42 is mounted on the first bearing seat 121, the annular positioning boss 421 can be used for positioning to ensure that the support plate 42 is coaxial with the inner hole of the first bearing seat 121.

Similarly, the bearing connecting plate 41 may also be provided with a plurality of lightening holes, so as to reduce the weight of the bearing connecting plate 41 and facilitate the use of the installation tool. A plurality of lightening holes may be arranged at equal angular intervals along the circumferential direction of the bearing connecting plate 41 to make the mass distribution of the bearing connecting plate 41 more uniform.

As shown in fig. 8, the support plate 42 may also be provided with a circular groove 42 c. The circular groove 42c is located on the surface of the support plate 42 facing the bearing attachment plate 41. The circular groove 42c is coaxial with the support plate 42, and the diameter of the circular groove 42c is the same as that of the bearing connection plate 41. By arranging the circular groove 42c, when the mounting tool is mounted on the first bearing seat 121, the threaded sleeve 44 can be screwed, the pull rod 43 is pulled, the bearing connecting plate 41 is located in the circular groove 42c, and then the threaded sleeve 44 is screwed, so that the bearing connecting plate 41 and the support plate 42 are fixedly connected into a whole. After the supporting plate 42 is mounted on the first bearing seat 121, the threaded sleeve 44 is loosened, the bearing connecting plate 41 can be pushed into the first bearing seat 121 by pushing the pull rod 43, the bearing connecting plate 41 can be ensured to be coaxial with the inner hole of the first bearing seat 121, and the problem that the bearing connecting plate 41 is easy to incline to cause scraping of the inner walls of the bearing connecting plate 41 and the first bearing seat 121 during mounting is avoided. After the support plate 42 is mounted on the first bearing housing 121 and the threaded sleeve 44 is loosened and the threaded sleeve 44 is fed into the first bearing housing 121, the bearing connecting plate 41 may be connected to the first bearing 31 by using bolts through the plurality of hollowed-out openings 42d of the support plate 42.

Alternatively, the plurality of cutout openings 42d of the support plate 42 may be arranged at equal angular intervals along the circumferential direction of the support plate 42, which not only makes the mass distribution of the support plate 42 more uniform, but also facilitates the mounting of the upper bolts in the respective first and

second screw holes

41a and 41 b.

The following is a brief description of the installation process of the lifting unit.

The method comprises the following steps: and assembling the lifting unit, and then removing the end cover of the first bearing and the torque sensor arranged on the end face of the gear shaft.

Step two: and hoisting the lifting unit by adopting a lifting appliance, so that the first bearing socket is inserted into the first bearing seat, and the second bearing socket is inserted into the second bearing seat.

Step three: and placing the bearing connecting plate into the first bearing seat, and connecting the bearing connecting plate with the first bearing.

Step four: the support plate is sleeved on the pull rod and is connected with the first bearing seat.

Step five: and installing a tension assembly, and pulling the pull rod through the tension assembly to adjust the lifting unit to a required position.

Step six: and disassembling the mounting tool, and reinstalling the torque sensor and the end cover of the first bearing.

It should be noted that the above installation process is only an example, and other different installation forms may be available in actual installation, and the installation process may be different for installation work of different structures. For example, for a part of the installation tooling, the support plate may be installed first, and then the bearing connecting plate is connected to the first bearing, as detailed in the previous embodiment.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An installation tool of a lifting unit, the lifting unit comprises a climbing gear (23) and a gear shaft (24), the climbing gear (23) is sleeved on the gear shaft (24), one end of the gear shaft (24) is provided with a first bearing (31), the other end of the gear shaft (24) is provided with a second bearing (32), the outer diameter of the first bearing (31) is smaller than that of the second bearing (32), the installation tool is characterized by comprising a circular bearing connecting plate (41), a circular supporting plate (42), a pull rod (43) and a pull assembly, the diameter of the bearing connecting plate (41) is smaller than that of the first bearing (31), the bearing connecting plate (41) is provided with a plurality of first screw holes (41a) and a plurality of second screw holes (41b), and the plurality of first screw holes (41a) and the plurality of second screw holes (41b) are distributed along the circumferential direction of the bearing connecting plate (41), the diameter of the circumference distributed by the first screw holes (41a) is the same as that of the circumference distributed by the bearing cover mounting holes (31a) on the first bearing (31), the diameter of the circumference distributed by the second screw holes (41b) is the same as that of the circumference distributed by the torque sensor mounting holes (31b) on the first bearing (31), the pull rod (43) is coaxially connected with the bearing connecting plate (41), the diameter of the support plate (42) is larger than the outer diameter of the first bearing (31), the middle part of the support plate (42) is provided with an insertion hole (42a), the support plate (42) is coaxially sleeved on the pull rod (43) through the insertion hole (42a), the support plate (42) is provided with a plurality of fixed mounting holes (42b), and the fixed mounting holes (42b) are distributed along the circumferential direction of the support plate (42), the diameter of the circumference that a plurality of fixed mounting holes (42b) distribute is located the installation between the internal diameter and the external diameter of the bearing frame of first bearing (31), the pulling force subassembly is used for following the axial pulling of pull rod (43), pull rod (43) are the threaded rod, the pulling force subassembly includes threaded sleeve (44), threaded sleeve (44) suit is in on pull rod (43), and with pull rod (43) threaded connection, the one end that bearing connecting plate (41) was kept away from to pull rod (43) still is provided with prevents changeing hole (43a), it prevents changeing pole (431) to prevent changeing hole (43a) interpolation, be provided with two jack (44a) on the pipe wall of threaded sleeve (44), two jack (44a) are about the axis central symmetry of threaded sleeve (44), jack (44a) with the inner wall of threaded sleeve (44) does not communicate, the axis of the insertion hole (44a) is perpendicular to the axis of the threaded sleeve (44), a rotating rod (441) is inserted into the insertion hole (44a), an annular positioning boss (421) is coaxially arranged on the support plate (42), the annular positioning boss (421) is positioned on the surface, facing the bearing connecting plate (41), of the support plate (42), the outer diameter of the annular positioning boss (421) is the same as the inner diameter of a bearing seat used for mounting the first bearing (31), a plurality of hollowed-out openings (42d) are arranged on the support plate (42), the hollowed-out openings (42d) are arranged at equal angular intervals in the circumferential direction of the support plate (42), a circular groove (42c) is arranged on the support plate (42), and the circular groove (42c) is positioned on the surface, facing the bearing connecting plate (41), of the support plate (42), the circular groove (42c) is coaxial with the support plate (42), and the diameter of the circular groove (42c) is the same as that of the bearing connecting plate (41).

2. The mounting tool according to claim 1, wherein the tension assembly further comprises a bearing block (45), the bearing block (45) is in a circular truncated cone shape, a coaxial through hole is formed in the bearing block (45), the bearing block (45) is sleeved on the pull rod (43) through the through hole, the bearing block (45) is located between the threaded sleeve (44) and the support plate (42), and the end face, with the larger area, of the bearing block (45) faces the support plate (42).

3. The mounting tool according to claim 1 or 2, wherein a counter bore (41c) is formed in the bearing connecting plate (41) corresponding to each first screw hole (41a) and each second screw hole (41b), and the counter bore (41c) is located on the surface of the bearing connecting plate (41) facing the support plate (42).

4. The mounting tool according to claim 1 or 2, characterized in that a plurality of lightening holes are arranged on the bearing connecting plate (41).