Concrete lining forming device for pumped storage power station diversion tunnel

Abstract

The application discloses a concrete lining forming device for a pumped storage diversion tunnel, and relates to the technical field of concrete lining forming, which comprises a trolley main body, and an auxiliary support is arranged between a side form plate and a longitudinal support frame. The auxiliary support is provided, a first telescopic cylinder is started, the first telescopic cylinder drives a push position frame to move horizontally, a clamping pin pushes a limiting slide rail, a second transmission straight gear drives a second connecting shaft to rotate, a hollow triangular support frame is away from one side of a triangular support block and is attached to one side of the side form plate close to the trolley main body, the hollow triangular support frame and the triangular support block form a main rigid support, the concrete side pressure and the vibration load are borne, the stability of the side form plate after expansion relative to the upper form plate is further improved, the form plate shape and position always meet the design requirements, and the concrete lining forming quality, the structure performance and the construction efficiency are improved from the root.

Description

Technical Field

[0001] This invention relates to the field of concrete lining forming technology, specifically a concrete lining forming device for pumped storage water diversion tunnels. Background Technology

[0002] The pumped-storage water diversion tunnel is a high-pressure pressurized water conveyance structure connecting the upper reservoir and the underground powerhouse. It conveys water downwards during power generation and in the reverse direction during pumping. It withstands high head, large flow rate, and bidirectional water flow over long periods, making it a crucial water conveyance channel for pumped-storage power stations. During tunnel lining construction, a lining trolley carries the pre-formed template to the working section and completes its positioning and support. Then, filling concrete is poured into the annular gap between the surrounding rock and the template to form a permanent concrete lining structure, achieving the tunnel's support, seepage prevention, and water passage functions.

[0003] The template relies on telescopic cylinders to swing it, and then the cylinders are locked to support the template. Due to insufficient rigidity of the cylinders, the template is prone to shaking and displacement during swinging and operation, resulting in poor forming effect. Moreover, the cylinders are easily damaged by long-term combined loads, which will affect the forming quality, structural performance and construction efficiency of concrete lining. Summary of the Invention

[0004] The purpose of this invention is to provide a concrete lining forming device for pumped storage water diversion tunnels in order to solve the problem.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a concrete lining forming device for a pumped-storage water diversion tunnel, comprising a trolley body, a longitudinal support frame installed on the top of the trolley body, a lifting cylinder provided at one end of the longitudinal support frame, a lifting cylinder also provided at the top of the longitudinal support frame, an upper template located above the longitudinal support frame connected to the longitudinal support frame via the lifting cylinder, a transverse support frame provided on the inner side of the longitudinal support frame, and side templates located on both sides of the longitudinal support frame rotatably connected to both ends of the upper template via a rotating shaft, with auxiliary support components provided between the side templates and the longitudinal support frame.

[0006] As a further embodiment of the present invention: the auxiliary support includes a triangular support block installed on one side of the longitudinal support frame and located between the side template and the longitudinal support frame. An arc-shaped locking block is installed at one end of the triangular support block near the side template. A connecting sleeve is provided on the inner side of the arc-shaped locking block. A second connecting shaft extending to the bottom of the connecting sleeve is provided at the top of the connecting sleeve. Positioning units are provided at both ends of the second connecting shaft. The connecting sleeve is connected to a hollow triangular support frame via a limiting unit. A cavity is formed on the inner side of the triangular support block. A first connecting rod penetrating the cavity and extending to the bottom of the triangular support block is provided at the top of the triangular support block. The system comprises a first coupling, a limit slide rail mounted at the top of the first coupling, a second transmission spur gear located inside the connecting sleeve block on the second coupling, a first transmission spur gear located inside the cavity and meshing with the second transmission spur gear on the first coupling, a positioning block located on one side of the first coupling at the top of the triangular support block, a first telescopic cylinder mounted at one end of the positioning block, a pusher frame connected to the extended end of the first telescopic cylinder, a locking pin located inside the limit slide rail at the end of the pusher frame away from the first telescopic cylinder, and a fixed angle limiting unit connected to the first coupling at the bottom of the triangular support block.

[0007] As a further embodiment of the present invention: the locking pin is slidably connected to the inner side of the limiting slide rail, and the diameter of the locking pin is equal to the width of the inner wall of the limiting slide rail.

[0008] As a further embodiment of the present invention: the bottom of one end of the limiting slide rail is connected to the top of the first connecting shaft, and the length of the limiting slide rail is greater than the farthest distance from the second connecting shaft to the hollow triangular support frame. The connection between the limiting slide rail and the first connecting shaft forms a force-saving lever structure between the limiting slide rail and the first connecting shaft.

[0009] As a further embodiment of the present invention: the positioning unit includes a second chuck installed at both ends of the second connecting shaft. A rectangular slot is provided at the end of the second chuck away from the second connecting shaft. A rectangular block is slidably connected to the inner side of the rectangular slot. A first chuck is provided on the top of the rectangular block. The end of the hollow triangular support frame away from the side template is welded and fixed to the end of the first chuck away from the rectangular block. The edges between the first chuck and the second chuck are connected by bolts.

[0010] As a further embodiment of the present invention: the length of the arc-shaped card block is greater than the distance between the first chucks at both ends of the hollow triangular support frame, and the length of the arc-shaped card block is equal to the thickness of the triangular support block. Through the support of the arc-shaped card block, the thrust of the side template on the first chuck and the second chuck is fully applied to the arc-shaped card block.

[0011] As a further aspect of the present invention: the diameters of the first chuck and the second chuck are equal, and the inner curvature of the arc-shaped chuck block is equal to the outer curvature of the first chuck.

[0012] As a further embodiment of the present invention: the fixed angle limiting unit includes a positioning frame installed at the bottom of the triangular support block. A partition is installed on the inner side of the positioning frame. A second telescopic cylinder is installed at the bottom of the positioning frame. The extension end of the second telescopic cylinder extends to the inner side of the positioning frame. A first limiting plate located inside the positioning frame is installed at the extension end of the second telescopic cylinder. A supplementary rod is installed at the top of the first limiting plate. A hexagonal insert rod penetrating the partition is provided at the top of the partition. A limiting hole is opened at the bottom of the hexagonal insert rod. A second contact piece is provided at the top of the hexagonal insert rod. The top end of the supplementary rod extends to the inner side of the limiting hole. A second limiting plate is provided at the bottom of the hexagonal insert rod. A telescopic spring located outside the supplementary rod and connected to the second limiting plate is provided at the top of the first limiting plate. A positioning disk is provided at the bottom of the first coupling. A slot that fits with the hexagonal insert rod is provided at the bottom of the positioning disk. A first contact piece located above the slot is provided on the inner side of the positioning disk.

[0013] As a further embodiment of the present invention: the second contact is electrically connected to an external warning light via a wire, and the first contact is electrically connected to an external power supply via a wire.

[0014] As a further aspect of the present invention: the furthest distance from the top of the supplementary rod to the top of the limiting hole is greater than the thickness of the positioning plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting auxiliary support components, after the upper template and side template expand towards the inner wall of the tunnel, the first telescopic cylinder is activated. At this time, the first telescopic cylinder will drive the push frame to move horizontally. At this time, the locking pin will push the limit slide rail, thereby causing the limit slide rail to drive the first connecting shaft to rotate 90 degrees. When the first connecting shaft rotates 90 degrees, the first connecting shaft drives the second transmission spur gear to rotate through the first transmission spur gear. In this way, the second transmission spur gear drives the second connecting shaft to rotate. At this time, the second connecting shaft will drive the hollow triangular support frame to rotate synchronously through the positioning unit. In this way, the side of the hollow triangular support frame away from the triangular support block is in contact with the side template closer to the trolley body. The hollow triangular support frame and the triangular support block form the main rigid support, which bears the side pressure of concrete and vibration load, further improving the stability of the side template after expansion relative to the upper template, ensuring that the template shape and position always meet the design requirements, and fundamentally improving the quality of concrete lining forming, structural performance and construction efficiency. 2. By setting a positioning unit, when installing the hollow triangular support frame, first snap the rectangular block into one side of the rectangular slot to limit the left and right swing direction of the hollow triangular support frame. Then push the hollow triangular support frame to align the second chuck with the first chuck, thereby achieving the pre-connection of the second coupling shaft with the hollow triangular support frame and aligning the center of the second chuck with the center of the first chuck. This allows the mounting holes on the first chuck and the second chuck to be aligned. Then, use bolts to fix the first chuck and the second chuck together, thereby achieving the quick installation of the hollow triangular support frame. Similarly, the hollow triangular support frame can be replaced according to the inner curvature of the side template. 3. By setting a fixed angle limiting unit, when the first connecting shaft rotates 90 degrees, the hollow triangular support frame, along with the swing of the second connecting shaft, comes into contact with the side template. At this time, the slot and the top of the hexagonal plug are aligned. Activating the second telescopic cylinder will push the first limiting plate upwards. The first limiting plate, through the telescopic spring and the second limiting plate, will then push the hexagonal plug upwards, allowing the top of the hexagonal plug to insert into the slot. The first connecting shaft will then be limited by the hexagonal plug, thus locking the rotation angle and preventing reverse rotation failure due to vibration or impact. Simultaneously, the contact between the first and second contact pieces causes external... When the warning light illuminates, it indicates that one side of the hollow triangular support frame is completely aligned with one side of the side template. If the hexagonal insert and slot are not aligned after the first telescopic cylinder is fully extended, the top of the hexagonal insert will align with the bottom of the positioning plate when the second telescopic cylinder extends. If the second telescopic cylinder continues to extend, it will cause the first limiting plate to move relative to the second limiting plate, thus preventing the second contact piece from contacting the first contact piece. If the warning light does not illuminate when the second telescopic cylinder is fully extended, it indicates that the rotation angle of the hollow triangular support frame has deviated. This allows for the detection of the rotation angle of the hollow triangular support frame. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the connection between the triangular support block and the hollow triangular support frame of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the triangular support block of the present invention; Figure 4 This is a schematic diagram showing the connection between the first and second couplings of the present invention; Figure 5 This is a schematic diagram showing the connection between the hexagonal insert and the first coupling of the present invention; Figure 6 This is a schematic diagram showing the connection between the positioning disk and the pusher frame of the present invention; Figure 7This is a schematic diagram of the positioning frame of the present invention; Figure 8 This is a schematic diagram showing the connection between the replacement rod and the hexagonal plug rod of the present invention.

[0017] In the diagram: 1. Main body of the trolley; 2. Longitudinal support frame; 3. Transverse support frame; 4. Side template; 5. Upper template; 6. Lifting cylinder; 7. Triangular support block; 8. Positioning block; 9. First telescopic cylinder; 10. Positioning frame; 11. Second telescopic cylinder; 12. Arc-shaped locking block; 13. Hollowed-out triangular support frame; 14. First chuck; 15. Second chuck; 16. Connecting sleeve block; 17. Telescopic spring; 18. Alternating rod; 19. 20. First limiting plate; 21. Hexagonal insert rod; 22. Limiting slide rail; 23. First connecting shaft; 24. Positioning plate; 25. Cavity; 26. First transmission spur gear; 27. Second connecting shaft; 28. Rectangular locking block; 29. ​​Rectangular locking slot; 30. Second transmission spur gear; 31. Push frame; 32. Locking pin; 33. Second limiting plate; 34. Partition plate; 35. Limiting hole; 36. First contact piece; 37. Slot; 38. Second contact piece. Detailed Implementation

[0018] 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.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0020] Please see Figures 1 to 8 In this embodiment of the invention, a concrete lining forming device for a pumped storage water diversion tunnel includes a trolley body 1. A longitudinal support frame 2 is installed on the top of the trolley body 1. A lifting cylinder 6 is provided at one end of the longitudinal support frame 2, and a lifting cylinder 6 is also provided on the top of the longitudinal support frame 2. The longitudinal support frame 2 is connected to an upper template 5 located above the longitudinal support frame 2 through the lifting cylinder 6. A transverse support frame 3 is provided on the inner side of the longitudinal support frame 2. The two ends of the upper template 5 are rotatably connected to side templates 4 located on both sides of the longitudinal support frame 2 through a rotating shaft. An auxiliary support component is provided between the side templates 4 and the longitudinal support frame 2.

[0021] In this embodiment, the upper template 5 and the side templates 4 on both sides of the longitudinal support frame 2 are moved to the inside of the tunnel by the movement of the trolley body 1, and then the secondary lining grouting pipe is installed. First, the lifting cylinder 6 above the longitudinal support frame 2 is activated. The upper template 5 is brought closer to the inner wall of the tunnel by the extension of the lifting cylinder 6 above the longitudinal support frame 2. Then, the lifting cylinder 6 at one end of the longitudinal support frame 2 is activated to make the side template 4 swing relative to the upper template 5, so as to form a cavity between the upper template 5 and the tunnel, and between the side template 4 and the tunnel. Then, the auxiliary support is activated to provide secondary support for the upper template 5 and the side template 4. Then, concrete is injected into the cavity between the side template 4 and the tunnel through the grouting pipe. During this process, the concrete is vibrated and mixed by the mechanical vibrator on the trolley body 1, so as to achieve the formation of the concrete lining inside the tunnel.

[0022] Please refer to this carefully. Figure 2 , Figure 3 , Figure 4 , Figure 5The auxiliary support includes a triangular support block 7 installed on one side of the longitudinal support frame 2 and located between the side template 4 and the longitudinal support frame 2. An arc-shaped locking block 12 is installed at one end of the triangular support block 7 near the side template 4. A connecting sleeve 16 is provided inside the arc-shaped locking block 12. A second connecting shaft 26 extending to the bottom of the connecting sleeve 16 is provided at the top of the connecting sleeve 16. Positioning units are provided at both ends of the second connecting shaft 26. The connecting sleeve 16 is connected to a hollow triangular support frame 13 through a limiting unit. A cavity 24 is opened inside the triangular support block 7. A first connecting shaft 22 penetrating the cavity 24 and extending to the bottom of the triangular support block 7 is provided at the top of the triangular support block 7. The top of the first shaft 22 is equipped with a limiting slide rail 21. The second shaft 26 is provided with a second transmission spur gear 29 located inside the connecting sleeve block 16. The first shaft 22 is provided with a first transmission spur gear 25 located inside the cavity 24 and meshing with the second transmission spur gear 29. The top of the triangular support block 7 is provided with a positioning block 8 located on one side of the first shaft 22. One end of the positioning block 8 is equipped with a first telescopic cylinder 9. The extended end of the first telescopic cylinder 9 is connected to a push frame 30. The end of the push frame 30 away from the first telescopic cylinder 9 is equipped with a locking pin 31 located inside the limiting slide rail 21. The bottom of the triangular support block 7 is provided with a fixed angle limiting unit connected to the first shaft 22.

[0023] The locking pin 31 is slidably connected to the inner side of the limiting slide rail 21. The diameter of the locking pin 31 is equal to the width of the inner wall of the limiting slide rail 21. One end of the limiting slide rail 21 is connected to the top of the first connecting shaft 22. The length of the limiting slide rail 21 is greater than the farthest distance from the second connecting shaft 26 to the hollow triangular support frame 13. The connection between the limiting slide rail 21 and the first connecting shaft 22 forms a force-saving lever structure between the limiting slide rail 21 and the first connecting shaft 22.

[0024] In this embodiment, after the upper template 5 and the side template 4 expand towards the inner wall of the tunnel, the first telescopic cylinder 9 is activated. At this time, the first telescopic cylinder 9 will drive the push frame 30 to move horizontally. At this time, the locking pin 31 will push the limiting slide rail 21, thereby causing the limiting slide rail 21 to drive the first connecting shaft 22 to rotate 90 degrees. When the first connecting shaft 22 rotates 90 degrees, the first connecting shaft 22 drives the second transmission spur gear 29 to rotate through the first transmission spur gear 25. In this way, the second transmission spur gear 29 drives the second connecting shaft 26 to rotate. At this time, the second connecting shaft 26 will drive the hollow triangular support frame 13 to rotate synchronously through the positioning unit. In this way, the side of the hollow triangular support frame 13 away from the triangular support block 7 will be in contact with the side of the side template 4 close to the trolley body 1. The hollow triangular support frame 13 and the triangular support block 7 form the main rigid support, which bears the concrete lateral pressure and vibration load, further improving the stability of the side template 4 relative to the upper template 5 after expansion.

[0025] Please refer to this carefully. Figure 3 , Figure 4 The positioning unit includes a second chuck 15 installed at both ends of the second connecting shaft 26. A rectangular slot 28 is provided at the end of the second chuck 15 away from the second connecting shaft 26. A rectangular block 27 is slidably connected to the inner side of the rectangular slot 28. A first chuck 14 is provided on the top of the rectangular block 27. The end of the hollow triangular support frame 13 away from the side template 4 is welded and fixed to the end of the first chuck 14 away from the rectangular block 27. The edges between the first chuck 14 and the second chuck 15 are connected by bolts.

[0026] The length of the arc-shaped clamping block 12 is greater than the distance between the first chucks 14 at both ends of the hollow triangular support frame 13. The length of the arc-shaped clamping block 12 is equal to the thickness of the triangular support block 7. The support of the arc-shaped clamping block 12 ensures that the thrust of the side template 4 on the first chuck 14 and the second chuck 15 is fully applied to the arc-shaped clamping block 12. The diameters of the first chuck 14 and the second chuck 15 are equal, and the inner curvature of the arc-shaped clamping block 12 is equal to the outer curvature of the first chuck 14.

[0027] In this embodiment, when installing the hollow triangular support frame 13, the rectangular clip 27 is first snapped into one side of the rectangular slot 28 to limit the left and right swing direction of the hollow triangular support frame 13. Then, the hollow triangular support frame 13 is pushed, and the movement of the hollow triangular support frame 13 aligns the second chuck 15 with the first chuck 14, thereby achieving the pre-connection of the second connecting shaft 26 with the hollow triangular support frame 13. At the same time, the centers of the second chuck 15 and the first chuck 14 are aligned, thus enabling... The mounting holes on the first chuck 14 and the second chuck 15 are aligned, and then the first chuck 14 and the second chuck 15 are fixedly connected by bolts to achieve quick installation of the hollow triangular support frame 13. Similarly, the hollow triangular support frame 13 can be replaced according to the inner curvature of the side template 4, so that after rotating ninety degrees, the end of the hollow triangular support frame 13 away from the second connecting shaft 26 is always in contact with the inner side of the side template 4, further enhancing the auxiliary support effect of the hollow triangular support frame 13 on the side template 4.

[0028] Please refer to this carefully. Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8The fixed angle limiting unit includes a positioning frame 10 installed at the bottom of the triangular support block 7. A partition 33 is installed on the inner side of the positioning frame 10. A second telescopic cylinder 11 is installed at the bottom of the positioning frame 10. The extension end of the second telescopic cylinder 11 extends to the inner side of the positioning frame 10. A first limiting plate 19 located inside the positioning frame 10 is installed at the extension end of the second telescopic cylinder 11. A supplementary rod 18 is installed on the top of the first limiting plate 19. A hexagonal insert 20 penetrating the partition 33 is provided on the top of the partition 33. A limiting opening is provided at the bottom of the hexagonal insert 20. The hexagonal insert 20 has a second contact piece 37 at the top of the positioning hole 34. The top of the supplementary rod 18 extends to the inside of the positioning hole 34. The bottom of the hexagonal insert 20 has a second limiting plate 32. The top of the first limiting plate 19 has a telescopic spring 17 located outside the supplementary rod 18 and connected to the second limiting plate 32. The bottom of the first connecting shaft 22 has a positioning plate 23. The bottom of the positioning plate 23 has a slot 36 that fits with the hexagonal insert 20. The inside of the positioning plate 23 has a first contact piece 35 located above the slot 36.

[0029] The second contact piece 37 is electrically connected to the external warning light via a wire, the first contact piece 35 is electrically connected to the external power supply via a wire, and the farthest distance from the top of the supplementary rod 18 to the top of the limiting hole 34 is greater than the thickness of the positioning plate 23.

[0030] In this embodiment, after the first connecting shaft 22 rotates 90 degrees, the hollow triangular support frame 13, along with the swing of the second connecting shaft 26, comes into contact with the side template 4. At this time, the slot 36 and the top of the hexagonal insert 20 are aligned. Activating the second telescopic cylinder 11 pushes the first limiting plate 19 upwards. The first limiting plate 19, through the telescopic spring 17 and the second limiting plate 32, pushes the hexagonal insert 20 upwards, thereby inserting the top of the hexagonal insert 20 into the slot 36. The first connecting shaft 22 is then limited by the hexagonal insert 20, thus locking the rotation angle and preventing reverse rotation failure due to vibration or impact. Simultaneously, the first contact piece 35 contacts the second contact piece 37, causing external... When the warning light illuminates, it indicates that one side of the hollow triangular support frame 13 is completely aligned with one side of the side template 4. If the hexagonal insert 20 and slot 36 are not aligned after the first telescopic cylinder 9 is fully extended, the top of the hexagonal insert 20 will align with the bottom of the positioning plate 23 when the second telescopic cylinder 11 extends. If the second telescopic cylinder 11 continues to extend, it will cause the first limiting plate 19 to move relative to the second limiting plate 32, thus preventing the second contact piece 37 from contacting the first contact piece 35. If the warning light does not illuminate when the second telescopic cylinder 11 is fully extended, it indicates that the rotation angle of the hollow triangular support frame 13 has deviated. This allows for the detection of the rotation angle of the hollow triangular support frame 13.

[0031] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A concrete lining forming device for a pumped-storage water diversion tunnel, comprising a trolley body (1), characterized in that, The trolley body (1) is equipped with a longitudinal support frame (2) on its top. A lifting cylinder (6) is provided at one end of the longitudinal support frame (2). A lifting cylinder (6) is also provided at the top of the longitudinal support frame (2). The longitudinal support frame (2) is connected to an upper template (5) located above the longitudinal support frame (2) through the lifting cylinder (6). A transverse support frame (3) is provided on the inner side of the longitudinal support frame (2). The two ends of the upper template (5) are rotatably connected to side templates (4) located on both sides of the longitudinal support frame (2) through a rotating shaft. An auxiliary support is provided between the side template (4) and the longitudinal support frame (2).

2. The concrete lining forming device for a pumped-storage water diversion tunnel according to claim 1, characterized in that, The auxiliary support includes a triangular support block (7) installed on one side of the longitudinal support frame (2) and located between the side template (4) and the longitudinal support frame (2). An arc-shaped locking block (12) is installed at one end of the triangular support block (7) near the side template (4). A connecting sleeve (16) is provided on the inner side of the arc-shaped locking block (12). A second connecting shaft (26) extending to the bottom of the connecting sleeve (16) is provided at the top of the connecting sleeve (16). Positioning units are provided at both ends of the second connecting shaft (26). The connecting sleeve (16) is connected to a hollow triangular support frame (13) through a limiting unit. A cavity (24) is opened on the inner side of the triangular support block (7). A first connecting shaft (22) penetrating the cavity (24) and extending to the bottom of the triangular support block (7) is provided at the top of the triangular support block (7). A limiting slide rail (21) is installed at the top of the shaft (22). A second transmission spur gear (29) is provided on the second connecting shaft (26) inside the connecting sleeve block (16). A first transmission spur gear (25) is provided on the first connecting shaft (22) inside the cavity (24) and meshes with the second transmission spur gear (29). A positioning block (8) is provided on the top of the triangular support block (7) on one side of the first connecting shaft (22). A first telescopic cylinder (9) is installed at one end of the positioning block (8). A push frame (30) is connected to the extended end of the first telescopic cylinder (9). A locking pin (31) is installed at the end of the push frame (30) away from the first telescopic cylinder (9) inside the limiting slide rail (21). A fixed angle limiting unit connected to the first connecting shaft (22) is provided at the bottom of the triangular support block (7).

3. The concrete lining forming device for a pumped-storage water diversion tunnel according to claim 2, characterized in that, The locking pin (31) is slidably connected to the inner side of the limiting slide rail (21), and the diameter of the locking pin (31) is equal to the width of the inner wall of the limiting slide rail (21).

4. The concrete lining forming device for a pumped-storage water diversion tunnel according to claim 2, characterized in that, One end of the limiting slide rail (21) is connected to the top of the first connecting shaft (22). The length of the limiting slide rail (21) is greater than the farthest distance from the second connecting shaft (26) to the hollow triangular support frame (13). The connection between the limiting slide rail (21) and the first connecting shaft (22) forms a force-saving lever structure between the limiting slide rail (21) and the first connecting shaft (22).

5. A concrete lining forming device for a pumped-storage water diversion tunnel according to claim 2, characterized in that, The positioning unit includes a second chuck (15) installed at both ends of the second connecting shaft (26). A rectangular slot (28) is provided at the end of the second chuck (15) away from the second connecting shaft (26). A rectangular block (27) is slidably connected to the inner side of the rectangular slot (28). A first chuck (14) is provided on the top of the rectangular block (27). The end of the hollow triangular support frame (13) away from the side template (4) is welded and fixed to the end of the first chuck (14) away from the rectangular block (27). The edges between the first chuck (14) and the second chuck (15) are connected by bolts.

6. The concrete lining forming device for a pumped-storage water diversion tunnel according to claim 5, characterized in that, The length of the arc-shaped card block (12) is greater than the distance between the first chucks (14) at both ends of the hollow triangular support frame (13). The length of the arc-shaped card block (12) is equal to the thickness of the triangular support block (7). The support of the arc-shaped card block (12) allows the thrust of the side template (4) on the first chuck (14) and the second chuck (15) to be fully applied to the arc-shaped card block (12).

7. A concrete lining forming device for a pumped-storage water diversion tunnel according to claim 6, characterized in that, The first chuck (14) and the second chuck (15) have the same diameter, and the inner arc of the arc-shaped chuck block (12) is equal to the outer arc of the first chuck (14).

8. A concrete lining forming device for a pumped-storage water diversion tunnel according to claim 6, characterized in that, The fixed angle limiting unit includes a positioning frame (10) installed at the bottom of the triangular support block (7). A partition plate (33) is installed on the inner side of the positioning frame (10). A second telescopic cylinder (11) is installed at the bottom of the positioning frame (10). The extension end of the second telescopic cylinder (11) extends to the inner side of the positioning frame (10). A first limiting plate (19) located inside the positioning frame (10) is installed at the extension end of the second telescopic cylinder (11). A supplementary rod (18) is installed on the top of the first limiting plate (19). A hexagonal insert rod (20) penetrating the partition plate (33) is provided at the top of the partition plate (33). A limiting rod is provided at the bottom of the hexagonal insert rod (20). Hole (34), the top of the hexagonal plug (20) is provided with a second contact piece (37), the top of the supplementary rod (18) extends to the inside of the limiting hole (34), the bottom of the hexagonal plug (20) is provided with a second limiting plate (32), the top of the first limiting plate (19) is provided with a telescopic spring (17) located outside the supplementary rod (18) and connected to the second limiting plate (32), the bottom of the first connecting shaft (22) is provided with a positioning plate (23), the bottom of the positioning plate (23) is provided with a slot (36) that fits with the hexagonal plug (20), and the inner side of the positioning plate (23) is provided with a first contact piece (35) located above the slot (36).

9. A concrete lining forming device for a pumped-storage water diversion tunnel according to claim 8, characterized in that, The second contact (37) is electrically connected to the external warning light via a wire, and the first contact (35) is electrically connected to the external power supply via a wire.

10. A concrete lining forming device for a pumped-storage water diversion tunnel according to claim 8, characterized in that, The furthest distance from the top of the supplementary rod (18) to the top of the limiting hole (34) is greater than the thickness of the positioning plate (23).

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