On-site disassembling and assembling tool for thrust bearing of power turbine unit

Abstract

The invention discloses an on-site dismounting tool for a thrust bearing of a power turbine unit. Relates to the field of turbine set thrust bearings. When a thrust bearing of an existing power turbine unit needs to be overhauled and replaced on a working site, the thrust bearing cannot be disassembled, replaced and installed according to the vertical repair and installation state of the unit. The device comprises a track, a track supporting device, a pulley structure, a fixing device and a lengthened guide screw rod, the track penetrates through the track supporting device, so that the track horizontally slides on the track supporting device, the end of the track supporting device is fixedly connected with the end of the power turbine shaft, the tackle structure horizontally slides in the track, the track and the tackle structure penetrate through the fixing device, and after the fixing device is limited by the tackle structure, the tackle structure drives the fixing device to synchronously move. After the thrust bearing is detached, the thrust bearing slides on the fixing device in the direction of the track through a pulley structure, so that the thrust bearing is separated from the power turbine shaft. The method is applied to the field of disassembly and assembly of the thrust bearing of the turbine set.

Description

Technical Field

[0001] The invention relates to the field of turbine unit thrust bearings, and in particular to an on-site disassembly and assembly tool for a power turbine unit thrust bearing. Background Art

[0002] The thrust bearing of the power turbine unit needs to be inspected and replaced on-site. At this time, the unit is fully assembled and the power turbine shaft is in a horizontal working state. The installation clearance between the thrust bearing and the power turbine shaft is small, and there are comb teeth and other vulnerable structures on the shaft. The thrust bearing is heavy. There is no crane or space on site, so only two or three people can do the work manually. It is impossible to disassemble and replace the thrust bearing according to the vertical repair and installation state of the unit. Therefore, the following problems arise when inspecting and replacing the thrust bearing: Space and operation limitations: After the unit was fully assembled, the space around the thrust bearing was narrow, lacking the maneuverability of conventional lifting equipment, making it impossible to lift the bearing directly. Two or three people were required to remove, transport, and precisely install the bearing, requiring extremely high operational procedures and personnel coordination.

[0003] Problems in protecting vulnerable structures: The comb teeth and other structures on the power turbine shaft have fine dimensions and are made of brittle materials. During the removal and installation of the thrust bearing, any collision or extrusion may cause the comb teeth to deform or break, thereby affecting the sealing performance and operating efficiency of the unit.

[0004] Bearing disassembly and installation precision control: The installation clearance between the thrust bearing and the power turbine shaft is minute, requiring stringent position control and angular adjustment during removal and installation. Installation in a horizontal position, without the aid of gravity, requires precise manual adjustments using tools to ensure the bearing is properly seated and the clearance meets design standards. Failure to do so will compromise the unit's axial positioning and operational stability.

[0005] Risks of manual operation of heavy bearings: Thrust bearings are heavy. Without a crane, they must be carried and installed manually, which is not only labor-intensive but also poses a safety risk of the bearing slipping and personal injury. It is also difficult to ensure smooth movement and accurate installation of the bearing. Summary of the Invention

[0006] In order to solve the problem that when the thrust bearing of the existing power turbine unit needs to be inspected and replaced at the work site, the thrust bearing cannot be disassembled, replaced and installed by referring to the vertical repair and installation state of the unit. Therefore, the present invention provides a power turbine unit thrust bearing on-site disassembly and installation tool.

[0007] The technical solution of the present invention is: A power turbine thrust bearing on-site disassembly and assembly tool, comprising a track, a track support device, a pulley structure, a fixing device, and an extended guide screw; The track passes through the track support device, allowing the track to slide horizontally on the track support device. The end of the track support device is fixedly connected to the end of the power turbine shaft. The pulley structure slides horizontally in the track. The track and the pulley structure respectively pass through the fixing device. After the pulley structure is limited, the fixing device drives the fixing device to move synchronously when the pulley structure moves on the track. The threaded structure on the extended lead screw is screwed into the mounting threaded hole on the thrust bearing. The track, track support device, pulley structure, fixing device and extended guide screw are used in combination with each other. After the thrust bearing is removed, it slides horizontally along the direction of the track on the fixing device through the pulley structure to disengage the thrust bearing from the power turbine shaft.

[0008] Furthermore, the track is a square steel structure, and a slide groove for limiting the pulley structure is provided on the upper part of the track along the track direction; The front and rear portions of the track are respectively provided with holes, and bolts are installed in the holes at the front and rear portions of the track to stop the end faces of the track.

[0009] Furthermore, the track support device includes a track positioning block, a baffle and a cylindrical pin; The track positioning block is arranged between the two baffles so that the track positioning block is fixedly connected to the two baffles. A square groove is provided in the middle of the track positioning block, and a groove structure for installing cylindrical pins is provided at the bottom of the square groove. A group of cylindrical pins is installed in the groove body, and the two baffles set the group of cylindrical pins inside the track positioning block.

[0010] Furthermore, the track positioning block on the track support device is a circular structure, and the track positioning block is fixed to the flange screw hole at the end of the power turbine shaft by a bolt assembly; A track is inserted into the square groove on the track support device. The track slides horizontally on the track support device through the cylindrical pin on the track support device, and the sliding track can be inserted into the power turbine shaft.

[0011] Furthermore, the pulley structure includes a sliding block, a rolling bearing and a guide block; The sliding block has a bilaterally symmetrical structure, a set of rolling bearings are rotatably connected to the sliding block, and a guide block is symmetrically connected to the inclined surface of the sliding block; The guide block is arranged in the slide groove above the track, and the guide block is in clearance with the track to prevent the pulley structure from deflecting when sliding in the track; A group of mounting holes are evenly arranged on the sliding block.

[0012] Furthermore, there are six rolling bearings on the pulley structure, and the two front and rear rolling bearings on the sliding block are arranged vertically with the four middle rolling bearings. Four of the rolling bearings are installed on both sides of the sliding block, and the bottoms of the rolling bearings slide on the track. The other two rolling bearings are installed at the front and rear of the sliding block, and the rolling bearings slide on the left and right inner walls of the track, so that the sliding block slides smoothly inside the track.

[0013] Furthermore, the fixing device includes a fixing block and a small baffle; The fixing block is detachably connected to two small baffles near the top on both sides. The fixing block and the two small baffles are arranged vertically to the track. The distance between the two small baffles is greater than the thickness of the thrust bearing, so that the inner ring surface of the thrust bearing can be set between the two small baffles. When the fixing device moves on the track through the pulley structure, the thrust bearing is driven to move horizontally on the track through the fixing device.

[0014] Furthermore, the fixing block is provided with a slot for inserting the rail, and a notch is provided above the slot; The slot on the fixed block is sleeved on the outside of the track, and the upper notch in the slot passes through the pulley structure and presses on the upper part of the sliding block of the pulley structure, so that the fixing device can run smoothly inside the track with the cooperation of the pulley structure.

[0015] Furthermore, locking holes are provided on the left and right sides of the fixing block of the fixing device, and locking bolts can be screwed into the locking holes. By installing the locking bolts in the locking holes on both sides of the fixing block, the fixing device can be fixed at any position of the track.

[0016] Furthermore, the number of the extended lead screws is six, and the six extended lead screws are arranged in parallel; The thread structure of the extended lead screw is inserted into the mounting threaded hole on the thrust bearing, and the extended lead screw is pulled horizontally to remove the thrust bearing from the power turbine shaft.

[0017] Compared with the prior art, the present invention has the following effects: The present invention can slide inside the power turbine shaft and allow the stop bearing to slide on the track, ensuring that the thrust bearing can slide on the track with only human power, ensuring that the thrust bearing can be quickly and efficiently moved to the outside of the unit for maintenance with only human power. The replaced thrust bearing can be reinstalled on the track, thus smoothly achieving the purpose of disassembly, maintenance and reinstallation.

[0018] The present invention enables manual disassembly and reassembly of thrust bearing modules during power turbine unit testing and on-site operation without the need for a crane or space. It also avoids damage and scuffing to the unit's shafting caused by horizontal disassembly due to the thrust bearing's heavy weight, tight clearance with the power turbine shaft, and the presence of vulnerable structures such as comb teeth on the shaft. The replaced thrust bearing assembly can be reinstalled on the track for smooth disassembly, overhaul, and reassembly, reducing disassembly, maintenance, and reassembly time by at least 80% and eliminating the need for a large crane.

[0019] The present invention first removes the fixing screws of the thrust bearing assembly, installs an extended guide screw, and secures it to the screw hole of the bearing housing. The track is inserted into the power turbine shaft, and the pulley structure is inserted into the track. The pulley structure can slide within the track via an internal rolling bearing. Then, a fixing device is placed outside the track and seated on the pulley structure. Two bolt holes are selected on the sliding block of the pulley structure and tightened. A bolt is installed in the through hole on the other side of the track to prevent the entire pulley structure from sliding off the track. The operator removes the thrust bearing assembly, withdraws the thrust bearing assembly from the power turbine shaft along the extended guide screw, and seats it on the fixing block of the fixing device. A small baffle is then installed to prevent the thrust bearing assembly from falling onto the track due to excessive sliding. The movement of the thrust bearing assembly can be carried out on the track via the pulley structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic structural diagram of the present invention when in use; Figure 3 yes Figure 2 A partial enlarged view of part A in the middle; Figure 4 It is a schematic diagram of the installation structure of the pulley structure and the fixing device; Figure 5 It is a schematic diagram of the installation structure of the track, pulley structure and fixing device; Figure 6 It is a schematic diagram of the track structure; Figure 7 It is a cross-sectional view of the track; Figure 8 It is a structural schematic diagram of the track support device; Figure 9 yes Figure 8 BB cross-sectional view in; Figure 10 It is a structural diagram of the pulley structure; Figure 11 yes Figure 10 The CC section view in the figure; Figure 12is a schematic diagram of the structure of the fixing device; Figure 13 yes Figure 12 DD cross-sectional view; Figure 14 It is a schematic diagram of the structure of the extended lead screw; Figure 15 It is a schematic diagram of the connection between the power turbine shaft and the thrust bearing; In the figure: 1. Track, 2. Track support device, 3. Pulley structure, 4. Fixing device, 5. Extended guide screw, 6. Power turbine shaft, 7. Thrust bearing; 11. Chute; 21. Track positioning block, 22. Baffle, 23. Cylindrical pin, 24. Square slot; 31. Sliding block, 32. Rolling bearing, 33. Guide block, 31-1. Mounting hole; 41. Fixing block, 42. Small baffle, 41-1. Slot, 41-2. Locking hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] Specific implementation method 1: Combination Figure 1 — Figure 5 This embodiment is described. A power turbine thrust bearing on-site disassembly and assembly tool is provided. The power turbine thrust bearing on-site disassembly and assembly tool comprises a track 1, a track support device 2, a pulley structure 3, a fixing device 4, and an extended guide screw 5. The track 1 passes through the track support device 2, allowing the track 1 to slide horizontally on the track support device 2. The end of the track support device 2 is fixedly connected to the end of the power turbine shaft 6. The pulley structure 3 slides horizontally in the track 1. The track 1 and the pulley structure 3 respectively pass through the fixing device 4. After the pulley structure 3 is limited, the fixing device 4 drives the fixing device 4 to move synchronously when the pulley structure 3 moves on the track 1. The threaded structure on the extended lead screw 5 is screwed into the mounting threaded hole on the thrust bearing 7. The track 1, track support device 2, pulley structure 3, fixing device 4 and extended guide screw 5 are used in combination with each other. After the thrust bearing 7 is removed, it slides horizontally along the direction of the track 1 on the fixing device 4 through the pulley structure 3 to disengage the thrust bearing 7 from the power turbine shaft 6.

[0023] Specific implementation method 2: Combination Figure 6 and Figure 7This embodiment describes a tool for disassembling and assembling a thrust bearing of a power turbine unit on site. The track 1 is a square steel structure, and a slide groove 11 for limiting the position of the pulley structure 3 is provided on the upper portion of the track 1 along the track direction. The front and rear portions of the track 1 are respectively provided with holes, and bolts are installed in the holes in the front and rear portions of the track 1 to stop the end faces of the track 1 .

[0024] The track 1 can be inserted into the power turbine shaft 6, and the rubber or the like can be appropriately filled in to protect the shaft. The track 1 can slide in the power turbine shaft 6, and the length of the track 1 outside the power turbine shaft can be adjusted.

[0025] Specific implementation method three: Combination Figure 8 and Figure 9 To illustrate this embodiment, a power turbine thrust bearing on-site disassembly and assembly tool is provided in this embodiment, wherein the track support device 2 includes a track positioning block 21, a baffle 22 and a cylindrical pin 23; The track positioning block 21 is arranged between the two baffles 22, so that the track positioning block 21 is fixedly connected to the two baffles 22. A square groove 24 is provided in the middle of the track positioning block 21, and a groove structure for installing a cylindrical pin 23 is provided at the bottom of the square groove 24. A group of cylindrical pins 23 are installed in the groove body, and the two baffles 22 set the group of cylindrical pins 23 inside the track positioning block 21.

[0026] Install the track support device 2 , apply lubricating oil to the cylindrical pin 23 of the track support device 2 , and the bottom of the track 1 can slide in the square groove 24 of the track support device 2 .

[0027] Specific implementation method four: Combination Figure 8 and Figure 9 To illustrate this embodiment, in one embodiment of the present invention, the on-site disassembly and assembly tool for the thrust bearing of a power turbine unit is provided, wherein the track positioning block 21 on the track support device 2 is a circular structure, and the track positioning block 21 is fixed to the flange screw hole at the end of the power turbine shaft 6 by a bolt assembly; The track 1 is inserted into the square groove 24 on the track support device 2, and the track 1 slides horizontally on the track support device 2 through the cylindrical pin 23 on the track support device 2. The track positioning block 21 of the integral track support device 2 is secured to the flange screw hole at the end of the power turbine shaft 6 via a flange hole. The track 1 can slide freely within the track positioning block 21, penetrating into the internal cavity of the power turbine shaft 6. Furthermore, the square groove 24 within the track positioning block 21 provides a clearance fit with the track 1, ensuring that the track 1 does not deflect significantly during overall movement.

[0028] Specific implementation method five: Combination Figure 10 and Figure 11 This embodiment describes a tool for disassembling and assembling a thrust bearing of a power turbine set on site. The pulley structure 3 includes a sliding block 31, a rolling bearing 32, and a guide block 33. The sliding block 31 has a bilaterally symmetrical structure, a set of rolling bearings 32 are rotatably connected to the sliding block 31, and a guide block 33 is symmetrically connected to the inclined surface of the sliding block 31; The guide block 33 is arranged in the slide groove 11 above the track 1. The guide block 33 is in clearance fit with the track 1 to prevent the pulley structure 3 from deflecting when sliding in the track 1. A group of mounting holes 31 - 1 are evenly formed on the sliding block 31 .

[0029] The pulley structure 3 is inserted into the track 1, and the pulley structure 3 can slide in the track 1 through the internal rolling bearing 32. The guide blocks (7) at both ends of the sliding block 31 can ensure that the pulley structure 3 does not have a large deflection when sliding.

[0030] Specific implementation method six: combination Figure 10 and Figure 11 The present embodiment is described. This embodiment is a tool for on-site disassembly and assembly of a thrust bearing of a power turbine unit. There are six rolling bearings 32 on the pulley structure 3. The two front and rear rolling bearings 32 on the sliding block 31 are arranged vertically with the four middle rolling bearings 32. Four of the rolling bearings 32 are installed on both sides of the sliding block 31, and the bottoms of the rolling bearings 32 slide on the track 1. The other two rolling bearings 32 are installed at the front and rear of the sliding block 31, and the rolling bearings 32 slide on the left and right inner walls of the inner side of the track 1, so that the sliding block 31 slides smoothly inside the track 1.

[0031] Specific implementation method seven: combination Figure 12 and Figure 13 This embodiment describes a power turbine thrust bearing on-site disassembly and assembly tool. The fixing device 4 includes a fixing block 41 and a small baffle 42. The fixing block 41 is detachably connected to two small baffles 42 on both sides near the top. The fixing block 41 and the two small baffles 42 are arranged vertically to the track 1. The distance between the two small baffles 42 is greater than the thickness of the thrust bearing 7, so that the inner ring surface of the thrust bearing 7 can be set between the two small baffles 42. When the fixing device 4 moves on the track 1 through the pulley structure 3, the thrust bearing 7 is driven to move horizontally on the track 1 through the fixing device 4.

[0032] The fixing device 4 is sleeved on the outside of the track 1 and sits on the pulley structure 3. Select any two mounting holes 31-1 on the sliding block 31 in the pulley structure 3 and screw in the set screws to ensure that the fixing device 4 will not fall off on the pulley structure 3.

[0033] There are two small baffles 42, and the small baffles 42 are symmetrically arranged on both sides of the fixed block 41. The two small baffles 42 are fixed to the fixed block 41 by a bolt assembly; The length of the two small baffles 42 is greater than the thickness of the thrust bearing 7, so that the thrust bearing 7 can be set between the two small baffles 42. When the pulley structure 3 drives the fixing device 4 to move, the two small baffles 42 on the fixing device 4 limit the thrust bearing 7.

[0034] Specific implementation method eight: combination Figure 12 and Figure 13 Describing this embodiment, this embodiment is a field disassembly and assembly tool for a thrust bearing of a power turbine unit, wherein the fixed block 41 is provided with a slot 41-1 for inserting the rail 1, and the upper part of the slot is provided with a notch, which can pass through the pulley structure 3 and press on the upper part of the sliding block 31 of the pulley structure 3.

[0035] The slot 41 - 1 on the fixing block 41 is sleeved on the outside of the track 1 , and the upper notch in the slot 41 - 1 passes through the pulley structure 3 and is pressed on the upper part of the sliding block 31 of the pulley structure 3 , so that the fixing device 4 can run smoothly inside the track 1 with the cooperation of the pulley structure 3 .

[0036] Specific implementation method nine: combination Figure 12 and Figure 13 The present embodiment is described as a tool for on-site disassembly and assembly of a thrust bearing of a power turbine unit. Locking holes 41-2 are provided on the left and right sides of the fixing block 41 of the fixing device 4. Locking bolts can be screwed into the locking holes 41-2. By installing the locking bolts in the locking holes 41-2 on both sides of the fixing block 41, the fixing device 4 can be fixed at any position on the track.

[0037] Specific implementation method ten: Combination Figure 1 — Figure 15 The present embodiment is described as a tool for on-site disassembly and assembly of a thrust bearing of a power turbine unit. The number of the extended guide screws 5 is two, and the two extended guide screws 5 are arranged in parallel. The extended guide screws 5 serve to guide the thrust bearing 7 out of the outside of the power turbine shaft 6.

[0038] The threaded structure of the extended lead screw 5 is inserted into the mounting threaded hole on the thrust bearing 7 , and the extended lead screw 5 is pulled horizontally to remove the thrust bearing 7 from the power turbine shaft 6 .

[0039] Working principle: Step 1: Remove the fixing screws of the thrust bearing 7 assembly, install the extended guide screw 5, and fix it in the screw hole of the bearing housing; Step 2: Insert the track 1 into the power turbine shaft 6, fill the shaft with rubber or other protective material, install the track support device 2, and apply lubricant to the cylindrical pin 23 of the track support device 2. The track 1 can then slide in the square groove of the track support device 2. Adjust the length of the track 1 outside the power turbine shaft 6 according to the actual space conditions at the disassembly site; Step 3: Insert the pulley structure 3 into the track 1. The pulley structure 3 can slide in the track 1 through the internal rolling bearing 32. The guide blocks 33 at both ends of the pulley can ensure that the pulley does not deflect significantly when sliding; Step 4: Place the fixture 4 on the outside of the track 1 and seat it on the pulley structure 3. Select any two bolt holes on the sliding block 31 in the pulley structure 3 and screw in the set screws to ensure that the fixture 4 does not fall off the pulley structure 3. Step 5: Install a bolt on the through hole on the other side of the track 1 to prevent the pulley structure 3 from sliding off the track 1. Step 6: The operator removes the thrust bearing 7 assembly, withdraws the thrust bearing 7 assembly from the power turbine shaft 6 along the extended guide screw 5, and seats it on the fixing block 41 of the fixing device. Then, a small baffle 42 is installed to ensure that the thrust bearing 7 assembly does not fall onto the track 1 due to too smooth sliding; Step 7: The movement of the stop bearing 7 assembly can be performed on the track 1 via the pulley structure 3; Step 8: After disassembly and inspection, the replaced thrust bearing 7 assembly can be reinstalled on the power turbine shaft 6 in the reverse order, fixed inside the bearing housing through the extended guide screw 5, and then replaced with the product bolt.

[0040] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A tool for disassembling and assembling thrust bearings of a power turbine unit, characterized in that: The on-site disassembly and assembly tool for the thrust bearing of the power turbine unit comprises a track (1), a track support device (2), a pulley structure (3), a fixing device (4) and an extended guide screw (5); The track (1) passes through the track support device (2), so that the track (1) slides horizontally on the track support device (2), the end of the track support device (2) is fixedly connected to the end of the power turbine shaft (6), and the pulley structure (3) slides horizontally in the track (1). The track (1) and the pulley structure (3) respectively pass through the fixing device (4). After the fixing device (4) is limited by the pulley structure (3), when the pulley structure (3) moves on the track (1), it drives the fixing device (4) to move synchronously, and the threaded structure on the extended guide screw (5) is screwed into the mounting threaded hole on the thrust bearing (7); The track (1), track support device (2), pulley structure (3), fixing device (4) and extended guide screw (5) are used in combination. After the thrust bearing (7) is removed, it slides horizontally along the direction of the track (1) on the fixing device (4) through the pulley structure (3), so that the thrust bearing (7) and the power turbine shaft (6) are disengaged.

2. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 1, characterized in that: The track (1) is a square steel structure, and a slide groove (11) for limiting the position of the pulley structure (3) is provided on the upper part of the track (1) along the track direction; The front and rear portions of the track (1) are respectively provided with holes, and bolts are installed in the holes at the front and rear portions of the track (1) to stop the end surface of the track (1).

3. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 1, characterized in that: The track support device (2) comprises a track positioning block (21), a baffle (22) and a cylindrical pin (23); The track positioning block (21) is arranged between the two baffles (22), so that the track positioning block (21) is fixedly connected to the two baffles (22). A square groove (24) is provided in the middle of the track positioning block (21), and a groove structure for installing a cylindrical pin (23) is provided at the bottom of the square groove (24). A group of cylindrical pins (23) is installed in the groove. The two baffles (22) set the group of cylindrical pins (23) inside the track positioning block (21).

4. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 2 or 3, characterized in that: The track positioning block (21) on the track support device (2) is a circular structure, and the track positioning block (21) is fixed to the flange screw hole at the end of the power turbine shaft (6) through a bolt assembly; A track (1) is inserted into the square groove (24) on the track support device (2), and the track (1) slides horizontally on the track support device (2) via a cylindrical pin (23) on the track support device (2). The sliding track (1) can be inserted into the interior of the power turbine shaft (6).

5. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 1, characterized in that: The pulley structure (3) includes a sliding block (31), a rolling bearing (32) and a guide block (33); The sliding block (31) has a bilaterally symmetrical structure, a group of rolling bearings (32) are rotatably connected to the sliding block (31), and a guide block (33) is symmetrically connected to the inclined surface of the sliding block (31); The guide block (33) is arranged in the slide groove (11) above the track (1), and the guide block (33) is clearance-matched with the track (1) to prevent the pulley structure (3) from deflecting when sliding in the track (1); A group of mounting holes (31-1) are evenly arranged on the sliding block (31).

6. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 5, characterized in that: The number of rolling bearings (32) on the pulley structure (3) is six, and the two front and rear rolling bearings (32) on the sliding block (31) are arranged vertically with respect to the four middle rolling bearings (32), wherein four rolling bearings (32) are mounted on both sides of the sliding block (31), and the bottoms of the rolling bearings (32) slide on the track (1), and the other two rolling bearings (32) are mounted on the front and rear of the sliding block (31), and the rolling bearings (32) slide on the left and right inner walls of the inner side of the track (1), so that the sliding block (31) slides horizontally inside the track (1).

7. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 1, characterized in that: The fixing device (4) includes a fixing block (41) and a small baffle (42); The fixing block (41) is detachably connected to two small baffles (42) near the top on both sides. The fixing block (41) and the two small baffles (42) are arranged vertically with respect to the track (1). The distance between the two small baffles (42) is greater than the thickness of the thrust bearing (7), so that the inner annular surface of the thrust bearing (7) can be arranged between the two small baffles (42). When the fixing device (4) moves on the track (1) through the pulley structure (3), the thrust bearing (7) is driven to move horizontally on the track (1) through the fixing device (4).

8. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 7, characterized in that: The fixing block (41) is provided with a slot (41-1) for inserting the rail (1), and a notch is provided above the slot (41-1); The slot (41-1) on the fixing block (41) is sleeved on the outside of the track (1), and the upper part of the slot (41-1) The notch passes through the pulley structure (3) and is pressed against the upper portion of the sliding block (31) of the pulley structure (3), so that the fixing device (4) can run smoothly inside the track (1) with the cooperation of the pulley structure (3).

9. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 7 or 8, characterized in that: The fixing block (41) of the fixing device (4) is provided with locking holes (41-2) on both sides thereof. Locking bolts can be screwed into the locking holes (41-2). By installing the locking bolts in the locking holes (41-2) on both sides of the fixing block (41), the fixing device (4) can be fixed at any position of the track.

10. The on-site disassembly and assembly tool for the thrust bearing of a power turbine unit according to claim 1, characterized in that: The number of the extended guide screws (5) is six, and the six extended guide screws (5) are arranged in parallel; The threaded structure of the extended guide screw (5) is inserted into the mounting threaded hole on the thrust bearing (7), and the extended guide screw (5) is pulled horizontally to remove the thrust bearing (7) from the power turbine shaft (6).

Images