Plug-in mounting tool and mounting method suitable for large motor

Abstract

The invention discloses a plug-in mounting tool and a mounting method suitable for a large motor, and belongs to the technical field of mounting of the large motor, the plug-in mounting tool comprises a trolley, a support is placed on the trolley, one end of the support is connected with a motor body or rotor equipment, the other end of the support is connected with a balancing weight, and lifting points are symmetrically arranged on two sides of the support. A plurality of groups of roller mechanisms are mounted at the bottom of the trolley, the roller mechanisms and the two groups of rails are arranged in a sliding manner, and the rails are arranged along the pressure shell or the interior of the stator, so that the roller mechanisms advance along the rails, and a motor body is pushed into the pressure shell or rotor equipment is mounted in the stator along the guide of the laid rails. According to the invention, the plug-in installation of the large-scale motor can be realized, and the collision possibility or damage possibility in the equipment installation process can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of installation of large motors, and in particular to an insertion type installation tool and an installation method suitable for large motors. Background Art

[0002] In the installation of motors or the assembly of motor stators and rotors, the conventional installation method is to use the long shaft installation method. When the motor needs to be installed inside a cylindrical pipe (such as the motor is installed in a pressure-bearing housing or pipe) or the motor rotor needs to be assembled with the motor stator (i.e., stator-rotor assembly), the long shaft installation method is a conventional method. Taking the stator-rotor assembly as an example, its implementation method is Figure 1 As shown (the whole machine is assembled into the pipeline inside the pressure shell in the same way).

[0003] like Figure 1 , sequence 101 represents the motor stator, sequence 102 represents the motor rotor, and sequence 103 represents the connecting shaft. The loading process is as follows: first, the sequence 101 motor stator is in place, and when it is in place, the shaft extension end of the sequence 102 motor rotor is fixed on the sequence 103 connecting shaft, and the sequence 102 motor rotor and the sequence 103 connecting shaft are hoisted to form a whole close to the stator (hoisting point 2 and hoisting point 3), until the sequence 103 connecting shaft extends from the other end of the sequence 101 motor stator (in the design of the sequence 103 connecting shaft, its length must ensure this process, that is, the connecting shaft can be extended). At this time, re-determine the lifting position point (hoisting point 1 and hoisting point 3), one end of the lifting rope is fixed on the sequence 103 connecting shaft that has been extended from the sequence 101 motor stator, and the other end is fixed on the sequence 102 motor rotor body, and then the sequence 102 motor rotor is hoisted in the axial direction to gradually insert the sequence 101 motor stator into the sequence 101 motor stator until it is in place. After it is in place, remove the long shaft of sequence 103 and complete the assembly of the whole machine.

[0004] The above is widely used in the assembly of conventional motors, but in some special occasions, there are no external conditions for adopting this assembly method. For example, the motor and the load (such as a compressor, fan) are an integrated unit. The motor and the compressor share a housing, such as Figure 2As shown, sequence 201 represents a common pressure shell, sequence 203 represents a load (such as a compressor), and sequence 203 represents a motor. The sequence 202 load (compressor) is first installed in the common sequence 201 pressure shell (or the sequence 202 load and the sequence 201 pressure shell are made into a whole), and one end of the sequence 201 pressure shell is blocked. At this time, the sequence 202 motor can only be inserted and installed at one end, and the assembly method of borrowing a long shaft cannot be adopted. For large equipment, the weight of a single sequence 202 motor is generally above 10t. On the other hand, for such large equipment, in order to reduce the level of on-site lifting (the configuration of the crane on the industrial site), it is often not considered to lift the equipment as a whole (that is, the equipment manufacturer completes the assembly of all parts and components, and lifts the equipment as a whole on site. For example, the compressor and motor of the common pressure shell are shipped after the assembly is completed, and are installed as a whole on site). For this reason, based on the infrastructure economy considerations of the lifting capacity, from the perspective of system investment, on-site assembly is the most economical implementation method.

[0005] This application is aimed at specific application occasions of large motor installation, that is, the motor body is only allowed to be installed into the pressure housing from a single side inlet, and the motor is a large equipment (usually weighing more than 10 tons), and at the same time, it is considered suitable for industrial on-site assembly. An insertion installation tool suitable for large motors and an installation method thereof are proposed. Summary of the invention

[0006] The present invention is aimed at specific application occasions, that is, the motor body is only allowed to be installed into the pressure housing from a single side inlet, and the motor is a large-scale equipment weighing 10 tons or more. In addition, the installation gap between the motor body and the pressure housing is small, and contact is not allowed during the installation process. For special applications, an insertion installation tool and installation method suitable for large motors are proposed.

[0007] The objective of the present invention is achieved through the following technical solutions: A plug-in installation tool suitable for large motors comprises a trolley, on which a bracket is placed, one end of the bracket is connected to a motor body or a rotor device, and the other end of the bracket is connected to a counterweight block, and lifting points are symmetrically arranged on both sides of the bracket. A plurality of roller mechanisms are installed at the bottom of the trolley, and the roller mechanisms are slidably arranged with two sets of tracks. The tracks are arranged along the inside of a pressure shell or a stator, so that the roller mechanisms move along the tracks, thereby realizing the motor body being pushed into the pressure shell or the rotor device being installed into the stator along the laid track guide.

[0008] Preferably, the roller structure includes a hollow shaft, a solid shaft and a rolling bearing, the hollow shaft is sequentially provided with a hollow shaft external thread, a trolley fixing portion and a bearing fixing portion, the hollow shaft is provided with a hollow shaft locking nut for locking the trolley and the hollow shaft on the external thread, the rolling bearing is arranged on the bearing fixing portion, the solid shaft is sequentially provided with a solid shaft external thread, a through portion and a bearing stopper, the solid shaft is provided with a solid shaft locking nut for locking the hollow shaft and the solid shaft on the external thread, and the through portion is arranged in the through hole in the hollow shaft.

[0009] Preferably, the lowest surface of the rolling bearing is lower than the lower surface of the trolley.

[0010] Preferably, the width of the rolling bearing is greater than the width of the bearing fixing portion.

[0011] Preferably, the track comprises a track body and a track fixing portion connected to the track body, and the track body is provided with a bearing accommodating cavity matching the rolling bearing.

[0012] Preferably, a plurality of braking circular holes are provided on the track body.

[0013] A plug-in installation method suitable for large motors comprises the following steps: Step A1, track installation; Step A2: Install the motor body / rotor device on the bracket, and install the counterweight on the other side of the bracket; Step A3, installing multiple sets of roller mechanisms to the lower end of the trolley; Step A4: Install the bracket with the motor body / rotor device and the counterweight block installed on the trolley; Step A5: Push the installed trolley into the track that has been put in place; Step A6: Push the whole thing in, set round steel for braking on the track, and insert the round steel alternately as the whole thing moves forward; Step A7: After installation, remove the motor body / rotor device from the bracket; Step A8: The rail is completely removed from the installation tool; Step A9: Remove the installation tool.

[0014] A plug-in installation method suitable for large motors comprises the following steps: Step B1, track installation; Step B2, installing multiple sets of roller mechanisms to the lower end of the trolley; Step B3: Push the installed trolley into the track that has been put in place; Step B4, install the motor body / rotor device on the bracket, and install the counterweight on the other side of the bracket; Step B5, installing the bracket with the motor body / rotor device and the counterweight block installed on the trolley; Step B6: Push the whole thing in, set round steel for braking on the track, and insert the round steel alternately as the whole thing moves forward; Step B7: After installation, remove the motor body / rotor device from the bracket; Step B8, the track is completely removed from the installation tool; Step B9: Remove the installation tool.

[0015] Preferably, in step A1 or step B1, the track is embedded in the foundation or compacted on site; after the pressure shell or stator is in place, the center of the pressure shell or stator is determined to ensure that the motor and the pressure shell are concentric or the rotor device and the stator are concentric; the horizontal center is achieved by laying the track, and the centering center of the two tracks is consistent with the horizontal center; the vertical center is achieved by a trolley, and an adjustment gasket is set between the trolley and the bracket or between the track and the foundation to ensure the vertical center.

[0016] Preferably, in step A7 or step B7, when the motor body / rotor device is removed from the bracket, the motor body / rotor device is removed while the counterweight is removed; in the final state, the counterweight is completely removed.

[0017] The beneficial effects of this technical solution are as follows: 1. The present invention provides an insertion installation tool suitable for large motors. The multiple roller mechanisms on the trolley enable the trolley to move along the track. The motor body / rotor equipment is installed at one end of the bracket, and the mounting block is set at the other end of the diameter. Then the bracket is installed on the trolley. The mobile trolley can smoothly push the trolley with the bracket installed as a whole to achieve the installation of the large motor. The present invention has the advantage of reducing the possibility of collision or damage during the installation of the equipment.

[0018] 2. The present invention provides an insertion installation tool suitable for large motors, which does not require the overall lifting of the pressure housing and internal motors and other equipment, effectively reducing the investment in on-site lifting equipment and using smaller lifting equipment to install heavy equipment.

[0019] 3. The present invention provides an insertion installation tool suitable for large motors. The use of a roller assembly reduces friction; the arrangement of a bearing accommodating cavity and a brake circular hole ensures that the trolley runs smoothly.

[0020] 4. The present invention provides an insertion installation tool suitable for large motors. This tool can also complete the disassembly of equipment (such as the motor needs to be removed from the pressure shell for maintenance); the disassembly process is the reverse process of the above-mentioned installation process; this tool can also be used in other application scenarios, such as the installation of large compressors, fans, etc.

[0021] 5. The present invention provides an insertion installation tool suitable for large motors, which has high flexibility and can be used for the installation of equipment of various specifications or various on-site conditions by simply replacing some parts (such as brackets). By replacing the brackets to adapt to different equipment interfaces and counterweight interfaces, on-site installation of equipment of various specifications can be easily achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the stator and rotor assembly in the prior art; Figure 2 It is a structural schematic diagram of a motor and a compressor sharing a housing in the prior art; Figure 3 A schematic diagram of the structure of the invention (excluding the track); Figure 4 is a cross-sectional view of the invention; Figure 5 It is a structural schematic diagram of the roller mechanism in the invention; Figure 6 It is a schematic diagram of the structure of the track in the invention; Figure 7 This is a schematic diagram of the installation process of Example 5 of the present invention; Figure 8 This is a schematic diagram of the installation process of Example 6 of the present invention; Among them: 1. trolley; 2. bracket; 3. counterweight; 4. lifting point; 5. roller mechanism; 6. track; 7. hollow shaft; 71. hollow shaft external thread; 72. trolley fixing part; 73. bearing fixing part; 8. solid shaft; 81. solid shaft external thread; 82. through part; 83. bearing stopper; 9. rolling bearing; 10. hollow shaft locking nut; 11. solid shaft locking nut; 12. track body; 121. bearing accommodating cavity; 122. brake circular hole; 13. track fixing part. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0024] Example 1 like Figure 3 and Figure 4As shown, an insertion installation tool suitable for large motors includes a trolley 1, a bracket 2 is placed on the trolley 1, one end of the bracket 2 is connected to the motor body or the rotor device, and the other end of the bracket 2 is connected to the counterweight 3. Lifting points 4 are symmetrically arranged on both sides of the bracket 2. A plurality of roller mechanisms 5 are installed at the bottom of the trolley 1. The roller mechanisms 5 are slidably arranged with two sets of tracks 6. The tracks 6 are arranged along the inside of the pressure shell or the stator, so that the roller mechanisms 5 move along the tracks 6, thereby realizing the guidance along the laid tracks 6 to push the motor body into the pressure shell, or install the rotor device into the stator.

[0025] Example 2 The difference between this embodiment and embodiment 1 is that Figure 5 As shown, the roller structure includes a hollow shaft 7, a solid shaft 8 and a rolling bearing 9. The hollow shaft 7 is provided with a hollow shaft external thread 71, a trolley fixing portion 72 and a bearing fixing portion 73 in sequence. The hollow shaft external thread 71 is provided with a hollow shaft locking nut 10 for locking the trolley 1 and the hollow shaft 7. The rolling bearing 9 is provided on the bearing fixing portion 73. The solid shaft 8 is provided with a solid shaft external thread 81, a through portion 82 and a bearing stopper 83 in sequence. The solid shaft external thread 81 is provided with a solid shaft locking nut 11 for locking the hollow shaft 7 and the solid shaft 8. The through portion 82 is provided in the through hole in the hollow shaft 7. The solid shaft 8 passes through the through hole on the hollow shaft 7 and is locked and fixed at the other end with a solid shaft locking nut 11.

[0026] The lowest surface of the rolling bearing 9 is lower than the lower surface of the trolley 1, so as to facilitate the storage of the installation tool when it does not enter the track 6.

[0027] The width of the rolling bearing 9 is greater than the width of the bearing fixing portion 73. The solid shaft 8 and the hollow shaft 7 together fix the rolling bearing 9.

[0028] Among them, Figure 6 As shown, the track 6 includes a track body 12 and a track fixing portion 13 connected to the track body 12, and the track body 12 is provided with a bearing accommodating cavity 121 matching the rolling bearing 9. Two sets of tracks 6 are arranged in the left and right directions, and the rolling bearing 9 is combined with the bearing accommodating cavity 121, and the track 6 is stressed to prevent rollover; in the front and rear directions, because multiple sets of roller mechanisms 5 are used, the roller mechanisms 5 can contact the track 6 front and back to prevent front and rear rollover.

[0029] Among them, a plurality of brake circular holes 122 are provided on the track body 12. The axis of the brake circular hole 122 is at the same horizontal height as the axis of the solid shaft 8. Considering the brake on the track 6, a brake circular hole 122 is provided on the track body 12. During the travel, round steel is inserted into the brake circular hole 122 to play a blocking role. When the whole body travels to the round steel, the round steel is removed alternately to ensure smooth travel. If there is an emergency, the round steel plays a blocking role on the installation tool as a whole to prevent the possibility of a large impact.

[0030] Example 3 This embodiment adopts an insertion type installation tool suitable for large motors as described in Embodiment 2, and an insertion type installation method suitable for large motors, comprising the following steps: Step A1, track 6 installation; Step A2, installing the motor body / rotor device on the bracket 2, and installing the counterweight 3 on the other side of the bracket 2; Step A3, installing multiple sets of roller mechanisms 5 to the lower end of the trolley 1; Step A4, installing the bracket 2 with the motor body / rotor device and the counterweight 3 installed on the trolley 1; Step A5, the installed trolley 1 is pushed into the track 6 that has been in place; Step A6: Push the whole thing in, set round steel for braking on the track 6, and insert the round steel alternately as the whole thing moves forward; Step A7: After installation, remove the motor body / rotor device from the bracket 2; Step A8: The track 6 is completely removed from the installation tool; Step A9: Remove the installation tool.

[0031] Among them, in step A1, the track 6 is buried in the foundation or compacted on site; after the pressure shell or stator is in place, the center of the pressure shell or stator is determined to ensure that the motor and the pressure shell are concentric or the rotor device and the stator are concentric; the horizontal center is achieved by laying the track 6, and the centering center of the two tracks 6 is consistent with the horizontal center; the vertical center is achieved by the trolley 1, and an adjusting gasket is set between the trolley 1 and the bracket 2 or between the track 6 and the foundation to ensure the vertical center.

[0032] Among them, in the step A7, when the motor body / rotor device is removed from the bracket 2, the motor body / rotor device is removed while the counterweight block 3 is removed; in the final state, the counterweight block 3 is completely removed.

[0033] Example 4 This embodiment adopts an insertion type installation tool suitable for large motors as described in Embodiment 2, and an insertion type installation method suitable for large motors, comprising the following steps: Step B1, track 6 installation; Step B2, installing multiple sets of roller mechanisms 5 to the lower end of the trolley 1; Step B3, the installed trolley 1 is pushed into the track 6 that has been in place; Step B4, installing the motor body / rotor device on the bracket 2, and installing the counterweight 3 on the other side of the bracket 2; Step B5, installing the bracket 2 with the motor body / rotor device and the counterweight 3 installed on the trolley 1; Step B6: Push the whole thing in, set round steel for braking on the track 6, and insert the round steel alternately as the whole thing moves forward; Step B7: After installation, remove the motor body / rotor device from the bracket 2; Step B8, the track 6 is completely removed from the installation tool; Step B9: Remove the installation tool.

[0034] Among them, in the step B1, the track 6 is buried in the foundation or compacted on site; after the pressure shell or stator is in place, the center of the pressure shell or stator is determined to ensure that the motor and the pressure shell are concentric or the rotor device and the stator are concentric; the horizontal center is achieved by laying the track 6, and the centering center of the two tracks 6 is consistent with the horizontal center; the vertical center is achieved by the trolley 1, and an adjustment gasket is set between the trolley 1 and the bracket 2 or between the track 6 and the foundation to ensure the vertical center.

[0035] Among them, in the step B7, when the motor body / rotor device is removed from the bracket 2, the motor body / rotor device is removed while the counterweight block 3 is removed; in the final state, the counterweight block 3 is completely removed.

[0036] The beneficial effects of this technical solution are as follows: 1. The present invention provides an insertion installation tool suitable for large motors. The multiple roller mechanisms 5 on the trolley 1 enable the trolley 1 to move along the track 6. The motor body / rotor device is installed at one end of the bracket 2. The mounting block 3 is set at the other end of the diameter. Then the bracket 2 is installed on the trolley 1. The moving trolley 1 can smoothly push the trolley 1 with the bracket 2 installed as a whole to achieve the installation of the large motor. The present invention has the advantage of reducing the possibility of collision or damage during the installation of the equipment.

[0037] 2. The present invention provides an insertion installation tool suitable for large motors, which does not require the overall lifting of the pressure housing and internal motors and other equipment, effectively reducing the investment in on-site lifting equipment and using smaller lifting equipment to install heavy equipment.

[0038] 3. The present invention provides an insertion installation tool suitable for large motors. The use of a roller assembly reduces friction. The arrangement of the bearing accommodating cavity 121 and the brake circular hole 122 ensures that the trolley 1 runs smoothly.

[0039] 4. The present invention provides an insertion installation tool suitable for large motors. This tool can also complete the disassembly of equipment (such as the motor needs to be removed from the pressure shell for maintenance); the disassembly process is the reverse process of the above-mentioned installation process; this tool can also be used in other application scenarios, such as the installation of large compressors, fans, etc.

[0040] 5. The present invention provides an insertion installation tool suitable for large motors, which has high flexibility and can be used for the installation of equipment of various specifications or various on-site conditions by simply replacing some parts (such as the bracket 2). By replacing the bracket 2 to adapt to different equipment interfaces and counterweight interfaces, the on-site installation of equipment of various specifications can be easily realized.

[0041] Example 5 like Figure 7 As shown, in this embodiment, taking the example of installing the motor body into the pressure housing, an insertion installation method suitable for large motors includes the following steps: 1) Installation of track 6. Track 6 can be embedded in the foundation or compacted on site. After the pressure shell is in place, determine the center of the shell to ensure that the motor body and the pressure shell are concentric. The horizontal center is achieved by laying track 6, and the centering center of the two tracks is consistent with the horizontal center. The vertical center is achieved by the design of the trolley 1 and other components, and certain adjustment gaskets can be set (such as between the trolley 1 and the bracket 2 or between the track and the foundation) to ensure the vertical center.

[0042] 2) Install all roller mechanisms 5 onto the trolley 1.

[0043] 3) Push the trolley 1 with the roller mechanism 5 installed into the track 6 that has been in place and fix it.

[0044] 4) Install the motor body on the bracket 2, and install the counterweight 3 on the other side of the bracket 2 (the counterweight 3 is adapted in the factory and is generally not fitted on site). In this way, the bracket 2, the motor body and the counterweight 3 become a whole, and the whole (the bracket 2, the motor body and the counterweight 3) can be lifted by the lifting point 4 and a smaller lifting equipment. The installation method of the motor body and the bracket 2 is the existing technology, such as: the motor body is bolted to the reserved hole on the bracket 2, or a similar fixing method is adopted; for the convenience of operation, a positioning stop can be set between the two, and the two are fastened after positioning by the positioning stop. The installation method of the counterweight and the bracket 2 is the existing technology, such as: a square counterweight 3 is assembled into the chamber reserved on the bracket 2, and when the counterweight meets the requirements, the chamber is compacted and fixed. The counterweight 3 can realize the function of balancing the counterweight; its shape and fixing type have a certain degree of randomness.

[0045] 5) Install the bracket 2 with the motor body and the counterweight 3 on the trolley 1 in place on the track 6. At this time, the bracket 2, the motor body and the counterweight 3 are a whole, and can be lifted as a whole through the lifting point 4 and a smaller lifting equipment (the bracket 2 with the motor body and the counterweight 3 is installed on the trolley 1 in place on the track 6).

[0046] 6) Pushing the whole in, which can be done by manpower or a jack. Considering the stability of the installation, round steel for braking is arranged on the track 6, and the round steel is alternately inserted into each braking circular hole 122 as the whole moves forward.

[0047] 7) After installation, remove the motor body from the bracket 2. To ensure the stability of the entire process, the counterweight 3 can be removed while the motor body is removed (in the final state, the counterweight 3 is completely removed).

[0048] 8) Remove the installation tool as a whole along track 6.

[0049] 9) Removal of installation tools.

[0050] Example 6 like Figure 8 As shown, in this embodiment, taking the example of installing the motor body into the pressure housing, an insertion installation method suitable for large motors includes the following steps: 1) Installation of track 6. Track 6 can be buried in the foundation or compacted on site. After the pressure shell is in place, determine the center of the shell to ensure that the motor body and the pressure shell are concentric. The horizontal center is achieved by laying track 6, and the centering center of the two tracks 6 is consistent with the horizontal center; the vertical center is achieved by the design of the trolley 1 and other components, and certain adjustment gaskets can be set (such as between the trolley 1 and the bracket 2 or between the track and the foundation) to ensure the vertical center.

[0051] 2) Install all roller mechanisms 5 onto the trolley 1.

[0052] 3) Push the trolley 1 with the roller mechanism 5 installed into the track 6 that has been in place and fix it.

[0053] 4) Install the motor body on the bracket 2, and install the counterweight 3 on the other side of the bracket 2 (the counterweight 3 is adapted in the factory and is generally not installed on site). In this way, the bracket 2, the motor body and the counterweight 3 become a whole, and the whole (the bracket 2, the motor body and the counterweight 3) can be lifted by the lifting point 4 and a smaller lifting equipment.

[0054] 5) Install the bracket 2 with the motor body and the counterweight 3 on the trolley 1 in place on the track 6. At this time, the bracket 2, the motor body and the counterweight 3 are a whole, and the whole (the bracket 2 with the motor body and the counterweight 3 is installed on the trolley 1 in place on the track 6) can be lifted as a whole through the lifting point 4 and smaller lifting equipment.

[0055] 6) Pushing the whole in, which can be done by manpower or a jack. Considering the stability of the installation, round steel for braking is arranged on the track 6, and the round steel is alternately inserted into each braking circular hole 122 as the whole moves forward.

[0056] 7) After installation, remove the motor body from the bracket 2. To ensure the stability of the entire process, the counterweight 3 can be removed while the motor body is removed (in the final state, the counterweight 3 is completely removed).

[0057] 8) Remove the installation tool as a whole along track 6.

[0058] 9) Removal of installation tools.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An insertion installation tool suitable for large motors, characterized in that: The invention comprises a trolley (1), on which a bracket (2) is placed, one end of the bracket (2) is connected to a motor body or a rotor device, and the other end of the bracket (2) is connected to a counterweight (3), and lifting points (4) are symmetrically arranged on both sides of the bracket (2). A plurality of roller mechanisms (5) are installed at the bottom of the trolley (1), and the roller mechanisms (5) are slidably arranged with two sets of tracks (6). The tracks (6) are arranged along the inside of a pressure shell or a stator, so that the roller mechanisms (5) move along the tracks (6), thereby realizing the guidance along the laid tracks (6) to push the motor body into the pressure shell, or install the rotor device into the stator.

2. The insertion installation tool suitable for large motors according to claim 1, characterized in that: The roller structure comprises a hollow shaft (7), a solid shaft (8) and a rolling bearing (9); a hollow shaft external thread (71), a trolley fixing portion (72) and a bearing fixing portion (73) are sequentially arranged on the hollow shaft (7); a hollow shaft locking nut (10) for locking the trolley (1) and the hollow shaft (7) is arranged on the hollow shaft external thread (71); the rolling bearing (9) is arranged on the bearing fixing portion (73); a solid shaft external thread (81), a through portion (82) and a bearing stopper (83) are sequentially arranged on the solid shaft (8); a solid shaft locking nut (11) for locking the hollow shaft (7) and the solid shaft (8) is arranged on the solid shaft external thread (81); and the through portion (82) is arranged in a through hole in the hollow shaft (7).

3. The insertion installation tool suitable for large motors according to claim 2, characterized in that: The lowest surface of the rolling bearing (9) is lower than the lower surface of the trolley (1).

4. The insertion installation tool suitable for large motors according to claim 3, characterized in that: The width of the rolling bearing (9) is greater than the width of the bearing fixing portion (73).

5. The insertion installation tool suitable for large motors according to claim 4, characterized in that: The track (6) comprises a track body (12) and a track fixing portion (13) connected to the track body (12); the track body (12) is provided with a bearing accommodating cavity (121) matching the rolling bearing (9).

6. The insertion installation tool suitable for large motors according to claim 5, characterized in that: The track body (12) is provided with a plurality of circular braking holes (122).

7. An insertion installation method suitable for large motors, characterized in that: The following steps are involved: Step A1, track (6) installation; Step A2, installing the motor body / rotor device on the bracket (2), and installing the counterweight (3) on the other side of the bracket (2); Step A3, installing multiple sets of roller mechanisms (5) to the lower end of the trolley (1); Step A4, installing the bracket (2) with the motor body / rotor device and the counterweight (3) mounted on the trolley (1); Step A5: Push the installed trolley (1) into the track (6) that has been put in place; Step A6: Push the whole thing in, set round steel for braking on the track (6), and insert the round steel alternately as the whole thing moves forward; Step A7: After installation, remove the motor body / rotor device from the bracket (2); Step A8: The rail (6) is completely removed from the installation tool; Step A9: Remove the installation tool.

8. An insertion installation method suitable for large motors, characterized in that: The following steps are involved: Step B1, track (6) installation; Step B2, installing multiple sets of roller mechanisms (5) to the lower end of the trolley (1); Step B3, the installed trolley (1) is pushed into the track (6) that has been put in place; Step B4, installing the motor body / rotor device on the bracket (2), and installing the counterweight (3) on the other side of the bracket (2); Step B5, installing the bracket (2) equipped with the motor body / rotor device and the counterweight (3) on the trolley (1); Step B6: Push the whole thing in, set round steel for braking on the track (6), and insert the round steel alternately as the whole thing moves forward; Step B7: After installation, remove the motor body / rotor device from the bracket (2); Step B8, the rail (6) is completely removed from the installation tool; Step B9: Remove the installation tool.

9. An insertion installation method suitable for large motors according to claim 7 or 8, characterized in that: In step A1 or step B1, the track (6) is embedded in the foundation or compacted on site; after the pressure shell or stator is in place, the center of the pressure shell or stator is determined to ensure that the motor and the pressure shell are concentric or the rotor device and the stator are concentric; the horizontal center is achieved by laying the track (6), and the centering center of the two tracks (6) is consistent with the horizontal center; the vertical center is achieved by the trolley (1), and an adjustment gasket is set between the trolley (1) and the bracket (2) or between the track (6) and the foundation, thereby ensuring the vertical center.

10. The insertion installation method applicable to large motors according to claim 9, characterized in that: In step A7 or step B7, when the motor body / rotor device is removed from the bracket (2), the motor body / rotor device is removed while the counterweight block (3) is removed; in the final state, the counterweight block (3) is completely removed.

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