Rapidly disassembled and assembled rail car based on water turbine maintenance

Abstract

The invention relates to the technical field of water turbine maintenance, and provides a rapid disassembly and assembly rail car based on water turbine maintenance, the rapid disassembly and assembly rail car comprises a first rail, the front end of the first rail is rotatably connected with a second rail, the top side of the first rail is connected with the second rail through a positioning assembly, and the bottom side of the first rail and the bottom side of the second rail are each provided with an adjusting assembly; the track chassis is arranged on the top side of the first track and the top side of the second track, the top side of the track chassis is fixedly connected with a vehicle bottom plate, the front end of the track chassis is rotationally connected with a front plate, and the front side of the track chassis is connected with the front side of the front plate through a rotating assembly. The front plate, the side plates and the rear plate are turned over synchronously through linkage of components such as the hydraulic rods and the connecting rods, separate operation is not needed, steps are simplified, and labor intensity is reduced; by means of accurate positioning of positioning blocks and positioning grooves and bolt fixing, complex procedures and equipment are omitted, and the positions of the supporting blocks can be adjusted to adapt to the complex terrain of a water turbine overhaul site.

Description

Technical Field

[0001] This invention relates to the field of water turbine maintenance technology, specifically to a rapid disassembly and assembly railcar for water turbine maintenance. Background Technology

[0002] In the energy structure, the hydro turbine, as the core equipment of the hydropower system, operates underwater or in humid and complex environments for extended periods, making it prone to component wear and malfunctions. Regular maintenance is crucial for ensuring power generation efficiency and equipment safety. During hydro turbine maintenance, railcars are often used for transporting parts, carrying maintenance tools, and assisting personnel. The ease of disassembly and assembly and terrain adaptability of these railcars directly affect maintenance efficiency and operational safety. Therefore, there is an urgent need for efficient and flexible hydro turbine maintenance railcars.

[0003] Currently, railcars used for turbine maintenance on the market have significant shortcomings in terms of panel opening and closing operations and positioning and fixing. Regarding panel operation, the front, side, and rear panels of existing railcars are mostly independently controlled structures. Workers must manually operate each panel individually, or with the aid of multiple drive components, resulting in cumbersome procedures that not only prolong the railcar assembly and disassembly time but also significantly increase the labor intensity of workers. In terms of positioning and terrain adaptation, existing railcars typically rely on complex welding processes or large installation equipment for positioning and installation, which is difficult and costly. Furthermore, their support structures are mostly fixed designs, unable to flexibly adjust the support height and angle according to the complex terrain commonly encountered at turbine maintenance sites, such as elevation differences and slopes. This can easily lead to unstable placement of the railcar, affecting the stability and safety of maintenance operations. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rapid assembly and disassembly railcar for turbine maintenance, which solves the problems of existing turbine maintenance railcars being cumbersome to operate, difficult to position, and hard to adapt to complex terrain.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid disassembly and assembly railcar for water turbine maintenance, comprising: Track 1, with Track 2 rotatably connected to its front end; the top side of Track 1 is connected to Track 2 via a positioning component; and adjustment components are provided on the bottom sides of both Track 1 and Track 2. A tracked chassis is mounted on the top side of track one and track two. A floor plate is fixedly connected to the top side of the tracked chassis. A front plate is rotatably connected to the front end of the tracked chassis. The front side of the tracked chassis is connected to the front side of the front plate through a rotating assembly. A side frame is rotatably connected to the side of the tracked chassis. A side plate is fixedly connected to the top side of the side frame. A sliding rod is fixedly connected to the middle side of the tracked chassis. A collar is slidably connected to the outer wall of the sliding rod. The outer wall of the collar is connected to the side of the side plate through a support assembly. Linkage 2 is rotatably connected to the outer wall of the collar. The front end of Linkage 2 is rotatably connected to Sliding Shaft 1, and the rear end of Linkage 2 is rotatably connected to Sliding Shaft 2. Both Sliding Shaft 1 and Sliding Shaft 2 are slidably connected to the top side of the tracked chassis. The front end of Sliding Shaft 1 is connected to the front plate through an adjustment component, and the rear end of Sliding Shaft 2 is connected to the rear plate through a linkage component.

[0006] Preferably, the rotating assembly includes an L-shaped frame rotatably connected to the front side of the front plate, a connecting block rotatably connected to the bottom end of the L-shaped frame, a hydraulic rod provided on the top side of the tracked chassis, a rear side of the connecting block fixedly connected to the rear side of the connecting block, a support rod slidably connected to the bottom end of the connecting block, and the rear end of the support rod fixedly connected to the front side of the tracked chassis.

[0007] Preferably, the support assembly includes a slide rail fixedly connected to the inner wall of the side plate, an inclined shaft fixedly connected to the outer wall of the collar, a slider rotatably connected to the bottom end of the inclined shaft, and the slider slidably connected inside the slide rail.

[0008] Preferably, the adjustment assembly includes a connecting rod rotatably connected to the front end of a sliding shaft, the front end of the connecting rod rotatably connected to a front side frame, the bottom end of the front side frame rotatably connected to the top side of the tracked chassis, and the top end of the front side frame fixedly connected to the bottom side of the front plate.

[0009] Preferably, the linkage component includes a guide rail fixedly connected to the rear end of the sliding shaft, and a rear side frame rotatably connected to the rear end of the tracked chassis, the rear side frame being disposed on the inner wall of the guide rail.

[0010] Preferably, the positioning component includes a positioning block fixedly connected to the front end of the first track, and a positioning groove is provided at the rear end of the second track, with the positioning block disposed inside the positioning groove.

[0011] Preferably, the adjustment assembly includes a support housing fixedly connected to the bottom sides of track one and track two, the support housing having a support block inside, and both the support block and the outer wall of the support housing having bolt holes.

[0012] Preferably, it includes the following steps: Step 1: First, install track 1 and track 2 by rotating them, and then adjust the lifting angle of the track by using the supporting shell. Step 2: Place the tracked chassis on the top side of track 1 and track 2, and then open the front plate to drive the side plates and rear plate to flip, thereby opening the railcar. Step 3: When the parts to be inspected are placed on the top side of the vehicle floor, the side panels and rear panels are closed by closing the front panel.

[0013] Preferably, in step one, the rotational installation of track one and track two is achieved by positioning blocks being engaged inside positioning slots, and track one and track two being fixed by bolts.

[0014] Preferably, the lifting angle of the tracks in step one is adjusted by moving the support block inside the support shell and fixing it with bolts, thereby adjusting the lifting angle of track one and track two.

[0015] Working principle: Track 1 and Track 2 are connected by a front-end rotation to achieve folding or unfolding. Positioning blocks are embedded in positioning slots and secured with bolts, completing the rapid splicing of Track 1 and Track 2. For the installation of multiple track sections, pre-installation between Track 1 and Track 2 is performed before installing the multiple track sections, achieving rapid track installation. Simultaneously, the extension length of the support block within the support housing and bolt fixing adjust the track lifting angle to adapt to complex terrain, providing a stable operating foundation for the tracked chassis. The front plate of the railcar is driven by the extension and retraction of hydraulic rods, causing the connecting block to slide on the support rod, pushing L... The frame allows the front plate to flip on the front side of the tracked chassis via the front side frame. Simultaneously, the rotation of the front side frame drives the first connecting rod to pull the first sliding shaft to slide. The first sliding shaft pushes the collar to slide on the sliding rod via the second front connecting rod. The collar drives the slider to slide in the slide rail via the inclined shaft, causing the side plate to flip around the tracked chassis via the side frame. On the other hand, the second rear connecting rod slides on the sliding rod via the collar, enabling the second rear connecting rod to push the second sliding shaft to slide. The second sliding shaft drives the rear side frame via the guide rail to flip the rear plate, achieving synchronous opening and closing of the front plate, side plate, and rear plate, which facilitates the loading, unloading, and transportation of maintenance parts for the turbine.

[0016] This invention provides a rapid disassembly and assembly railcar for water turbine maintenance. It has the following advantages: 1. This invention controls the opening and closing of the front plate, which is driven by a hydraulic rod to push the L-shaped frame and cause the front plate to flip. At the same time, the first connecting rod pulls the first sliding shaft, which in turn drives the second connecting rod, the collar and other components to flip the side plate. The second rear connecting rod then drives the second sliding shaft and the rear plate to flip. This eliminates the need to operate the three plates separately, greatly simplifying the operation steps and reducing the labor intensity of the workers.

[0017] 2. This invention achieves rapid positioning through the precise matching of positioning block and positioning groove, and can be fixed with the help of bolts. It does not require complex welding or large installation equipment. At the same time, by pulling the support block to move within the support shell, combined with bolt fixing, it can accurately adapt to complex terrain such as elevation differences and slopes at the turbine maintenance site. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the track structure of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 This is a schematic diagram of the vehicle floor structure of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the image; Figure 6 for Figure 4 Enlarged view of point C in the image; Figure 7 This is a schematic diagram of the rear plate structure of the present invention; Figure 8 for Figure 7 Enlarged view of point D in the image; Figure 9 for Figure 7 Enlarged view of point E in the image.

[0019] The components are as follows: 1. Track 1; 2. Track 2; 3. Tracked chassis; 4. Side plate; 5. Front plate; 6. Rear plate; 7. L-shaped frame; 8. Support shell; 9. Positioning block; 10. Positioning groove; 11. Support block; 12. Vehicle floor plate; 13. Hydraulic rod; 14. Slide rod; 15. Side frame; 16. Support rod; 17. Slide shaft 1; 18. Connecting rod 1; 19. Connecting rod 2; 20. Guide rail; 21. Rear frame; 22. Slide shaft 2; 23. Collar; 24. Inclined shaft; 25. Slider; 26. Slide rail; 27. Front frame; 28. Connecting block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Please see the appendix Figure 1 -Appendix Figure 3This invention provides a rapid disassembly and assembly railcar for water turbine maintenance, comprising: Track 1, with Track 2 rotatably connected to the front end of Track 1, the positioning component includes a positioning block 9 fixedly connected to the front end of Track 1, a positioning groove 10 is provided at the rear end of Track 2, the positioning block 9 is located inside the positioning groove 10, a support shell 8 is fixedly connected to the bottom side of Track 1 and Track 2, a support block 11 is provided inside the support shell 8, and bolt holes are provided on the outer walls of both the support block 11 and the support shell 8. Specifically, at turbine maintenance sites, complex terrain is often encountered, such as differences in the height of the unit foundation pit and variations in ground slope. The coordination between Track 1 and Track 2 needs to meet the requirements of rapid splicing and angle adaptation. Taking the maintenance of a 300,000 kW turbine at a hydropower station as an example, the track laying length in the maintenance area needs to reach 15m. This is achieved by splicing multiple sets of "Track 1 + Track 2" units. During installation, the positioning block 9 of the first Track 1 section is aligned with the positioning groove 10 of the adjacent Track 2 section. The positioning block 9 adopts a chamfered structure design, and the inner wall of the positioning groove 10 is equipped with a rubber buffer layer, which ensures the accuracy of guidance during splicing and avoids wear caused by metal collisions. After embedding, two sets of M16 high-strength bolts are passed through the pre-set bolt holes on the sides of Track 1 and Track 2 to complete the fixation of a single track section. The splicing time of a single track can be controlled within 5 minutes, which is 80% more efficient than traditional welded track installation. For the working condition of a 3° ground slope at the maintenance site, the adjustment components need to precisely adjust the track height. The support shell 8 adopts a rectangular steel structure with a 300mm internal adjustment stroke. The bottom of the support block 11 is welded with an anti-slip toothed steel plate. By pulling the support block 11 and sliding it within the support shell 8, the flatness of the top side of the track is monitored using a level. Once the track slope matches the ground slope, M20 bolts are used, with a set of bolt holes spaced 10mm apart between the corresponding bolt holes on the support shell 8 and the support block 11, to lock the track angle. After adjustment, the track's load-bearing capacity reaches 5t, meeting the transportation requirements of a single turbine runner blade weighing 3.5t.

[0022] Please see the appendix Figure 4 -Appendix Figure 6The tracked chassis 3 is mounted on the top side of track 1 and track 2. A chassis plate 12 is fixedly connected to the top side of the tracked chassis 3. A front plate 5 is rotatably connected to the front end of the tracked chassis 3. An L-shaped frame 7 is rotatably connected to the front side of the front plate 5. A connecting block 28 is rotatably connected to the bottom end of the L-shaped frame 7. A hydraulic rod 13 is mounted on the top side of the tracked chassis 3. A support rod 16 is slidably connected to the rear side of the connecting block 28. The rear end is fixedly connected to the front side of the tracked chassis 3. The side of the tracked chassis 3 is rotatably connected to the side frame 15. The top side of the side frame 15 is fixedly connected to the side plate 4. The middle side of the tracked chassis 3 is fixedly connected to the slide rod 14. The outer wall of the slide rod 14 is slidably connected to the collar 23. The slide rail 26 is fixedly connected to the inner wall of the side plate 4. The outer wall of the collar 23 is fixedly connected to the inclined shaft 24. The bottom end of the inclined shaft 24 is rotatably connected to the slider 25. The slider 25 is slidably connected inside the slide rail 26. Specifically, the tracked chassis 3 adopts a rubber track design. During the maintenance of pumped storage power stations, the tracked chassis 3 needs to support the 2m×1.5m area of ​​the chassis 12 and the total weight of the maintenance components (4t). Two sets of drive motors enable bidirectional movement, and the walking speed can be steplessly adjusted within the range of 0.5-2m / min to meet precise positioning requirements. During the opening of the front plate 5, the hydraulic rod 13 uses a double-acting hydraulic cylinder with a stroke of 500mm and a working pressure set at 12MPa. When the front plate 5 needs to be opened, the hydraulic rod 13 extends, pushing the connecting block 28 to slide along the support rod 16 (made of chrome-plated round steel with a diameter of 30mm). The connecting block 28 drives the L-shaped frame 7 to rotate around the front hinge point of the front plate 5. Simultaneously, the front frame 27, using a welded angle steel structure, rotates around the top hinge point of the tracked chassis 3, realizing the conversion of the front plate 5 from a vertically closed state to a horizontally open state. The maximum opening angle can reach 120°, facilitating the loading and unloading of large maintenance tools such as bearing removers with a diameter of 800mm. During the linkage process of side plate 4, slide rail 26 adopts a U-shaped aluminum alloy track with graphite lubricating strips embedded inside. Slider 25 and inclined shaft 24 are connected by joint bearings. When the gap between the inner diameter of collar 23 and the outer diameter of slide rod 14 is controlled at 0.5mm and slides along the solid round steel with a diameter of 40mm of slide rod 14, inclined shaft 24 drives slider 25 to slide synchronously in slide rail 26. The maximum sliding stroke of slider 25 is 200mm, ensuring that side plate 4 with a height of 1.2m and a width of 1.5m can be smoothly rotated 90°, and the opening action of front plate 5 is completed synchronously without any jamming.

[0023] Please see the appendix Figure 7 -Appendix Figure 9Linkage 2 19 is rotatably connected to the outer wall of collar 23. The front end of link 2 19 is rotatably connected to sliding shaft 1 17, and the rear end of link 2 19 is rotatably connected to sliding shaft 2 22. Sliding shaft 1 17 and sliding shaft 2 22 are slidably connected to the top side of track chassis 3. Linkage 1 18 is rotatably connected to the front end of sliding shaft 1 17. The front end of link 1 18 is rotatably connected to front side frame 27. The bottom end of front side frame 27 is rotatably connected to the top side of track chassis 3. The top end of front side frame 27 is fixedly connected to the bottom side of front plate 5. Guide rail 20 is fixedly connected to the rear end of sliding shaft 2 22. Rear side frame 21 is rotatably connected to the rear end of track chassis 3. Rear side frame 21 is set on the inner wall of guide rail 20. Specifically, both slide shaft 17 and slide shaft 22 adopt a slide rod and slider structure. The sliding track is opened in the channel steel on the top side of the track chassis 3, and the sliding gap is controlled at 0.3mm to ensure the straightness during the sliding process. When the front plate 5 is opened to 60°, the front frame 27 drives the connecting rod 18, which is made of seamless steel pipe with a diameter of 20mm, to pull slide shaft 17 to slide along the track. Slide shaft 17 is connected to the front connecting rod 29 by a pin. The pin with a diameter of 16mm pushes the collar 23 to slide on the slide rod 14. When the collar 23 moves a distance of 150mm, the rear connecting rod 29 pushes slide shaft 22 to slide. The guide rail 20 at the rear end of slide shaft 22 adopts a U-shaped groove structure with a groove width of 25mm. The rear frame 21 is made of steel plate bent and embedded in the guide rail 20. When the sliding shaft 22 slides, the guide rail 20 drives the rear frame 21 to rotate around the rear hinge point of the tracked chassis 3, so that the rear plate 6 opens synchronously with the front plate 5. The response time of the entire linkage process is less than 2 seconds, and the synchronization error of the opening actions of the front plate 5, side plate 4, and rear plate 6 is controlled within ±5° to avoid component collisions caused by asynchronous actions. During the maintenance of the turbine main shaft, a 2t main shaft seal is placed on a 5mm thick rubber anti-slip mat on the surface of the chassis 12. When the front plate 5 is closed, the hydraulic rod 13 retracts, and the above-mentioned linkage mechanism drives the plates to close. After closing, the front plate 5, side plate 4, rear plate 6 and chassis 12 form a closed space, which can effectively prevent dust and water stains from contaminating the maintenance components during transportation. At the same time, rubber sealing strips are set on the edges of each plate, and the sealing performance reaches the IP54 protection level.

[0024] A method for using a rapid disassembly and assembly railcar for turbine maintenance includes the following steps: Step 1: First, after rotating and installing rail 1 and rail 2, adjust the lifting angle of the rails using the supporting shell 8. In Step 1, the rotation and installation of rail 1 and rail 2 are achieved by positioning block 9 being engaged inside positioning groove 10 and fixing rail 1 and rail 2 with bolts. In Step 1, the lifting angle of the rails is adjusted by moving the supporting block 11 inside the supporting shell 8 and fixing it with bolts. Step 2: Place the tracked chassis 3 on the top side of track 1 and track 2, and then open the front plate 5 to drive the side plate 4 and rear plate 6 to flip, thereby opening the railcar. Step 3: When the parts to be inspected are placed on the top side of the vehicle floor 12, the closing of the front panel 5 will then drive the side panel 4 and the rear panel 6 to close.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid disassembly and assembly railcar for water turbine maintenance, characterized in that, include: Track 1 (1), with Track 2 (2) rotatably connected to the front end of Track 1 (1), the top side of Track 1 (1) being connected to Track 2 (2) via a positioning component, and adjustment components being provided on the bottom sides of both Track 1 (1) and Track 2 (2); Tracked chassis (3), the tracked chassis (3) is set on the top side of track one (1) and track two (2), the top side of the tracked chassis (3) is fixedly connected to the bottom plate (12), the front end of the tracked chassis (3) is rotatably connected to the front plate (5), the front side of the tracked chassis (3) is connected to the front side of the front plate (5) through a rotating component, the side side of the tracked chassis (3) is rotatably connected to the side frame (15), the top side of the side frame (15) is fixedly connected to the side plate (4), the middle side of the tracked chassis (3) is fixedly connected to the sliding rod (14), the outer wall of the sliding rod (14) is slidably connected to the collar (23), the outer wall of the collar (23) is connected to the side of the side plate (4) through a support component; Linkage 2 (19) is rotatably connected to the outer wall of collar (23). The front end of link 2 (19) is rotatably connected to sliding shaft 1 (17), and the rear end of link 2 (19) is rotatably connected to sliding shaft 2 (22). Sliding shaft 1 (17) and sliding shaft 2 (22) are both slidably connected to the top side of track chassis (3). The front end of sliding shaft 1 (17) is connected to front plate (5) through adjustment assembly, and the rear end of sliding shaft 2 (22) is connected to rear plate (6) through linkage assembly.

2. The rapid assembly and disassembly railcar based on water turbine maintenance according to claim 1, characterized in that, The rotating assembly includes an L-shaped frame (7) rotatably connected to the front side of the front plate (5), a connecting block (28) rotatably connected to the bottom end of the L-shaped frame (7), a hydraulic rod (13) provided on the top side of the tracked chassis (3), the rear side of the connecting block (28) is fixedly connected to the rear side of the connecting block (28), and a support rod (16) is slidably connected to the bottom end of the connecting block (28), the rear end of the support rod (16) is fixedly connected to the front side of the tracked chassis (3).

3. The rapid disassembly and assembly railcar based on water turbine maintenance according to claim 1, characterized in that, The support assembly includes a slide rail (26) fixedly connected to the inner wall of the side plate (4), an inclined shaft (24) fixedly connected to the outer wall of the collar (23), a slider (25) rotatably connected to the bottom end of the inclined shaft (24), and the slider (25) slidably connected inside the slide rail (26).

4. The rapid disassembly and assembly railcar based on water turbine maintenance according to claim 1, characterized in that, The adjustment assembly includes a connecting rod (18) rotatably connected to the front end of a sliding shaft (17). The front end of the connecting rod (18) is rotatably connected to a front side frame (27). The bottom end of the front side frame (27) is rotatably connected to the top side of the tracked chassis (3). The top end of the front side frame (27) is fixedly connected to the bottom side of the front plate (5).

5. A rapid disassembly and assembly railcar based on water turbine maintenance according to claim 1, characterized in that, The linkage component includes a guide rail (20) fixedly connected to the rear end of the sliding shaft (22), and a rear side frame (21) rotatably connected to the rear end of the tracked chassis (3). The rear side frame (21) is set on the inner wall of the guide rail (20).

6. A rapid disassembly and assembly railcar based on water turbine maintenance according to claim 1, characterized in that, The positioning component includes a positioning block (9) fixedly connected to the front end of track one (1), and a positioning groove (10) is provided at the rear end of track two (2), with the positioning block (9) located inside the positioning groove (10).

7. A rapid disassembly and assembly railcar based on water turbine maintenance according to claim 1, characterized in that, The adjustment assembly includes a support shell (8) fixedly connected to the bottom side of track one (1) and track two (2). The support shell (8) has a support block (11) inside. Both the support block (11) and the outer wall of the support shell (8) have bolt holes.

8. A method for using a rapid disassembly and assembly railcar for turbine maintenance, comprising using any one of the rapid disassembly and assembly railcars for turbine maintenance as described in claims 1-7, characterized in that... Includes the following steps: Step 1: First, after rotating and installing track 1 (1) and track 2 (2), adjust the lifting angle of the track by using the supporting shell (8); Step 2: Place the tracked chassis (3) on the top side of track 1 (1) and track 2 (2), and then open the front plate (5) to drive the side plate (4) and rear plate (6) to flip, thereby opening the track vehicle; Step 3: When the parts to be inspected are placed on the top side of the vehicle floor (12), the side panels (4) and rear panels (6) are closed by closing the front panel (5).

9. A method for using a rapid disassembly and assembly railcar based on water turbine maintenance according to claim 8, characterized in that, In step one, the rotational installation of track one (1) and track two (2) is achieved by positioning block (9) being inserted into positioning groove (10) and fixing track one (1) and track two (2) with bolts.

10. A method for using a rapid disassembly and assembly railcar based on water turbine maintenance according to claim 8, characterized in that, The lifting angle of the track in step one is adjusted by pulling the support block (11) to move inside the support shell (8) and fixing it with bolts, thereby adjusting the lifting angle of track one (1) and track two (2).

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