Supporting structure for water conservancy project

Abstract

The supporting structure for the water conservancy project comprises a base, the upper end of the base is fixedly connected with a base frame, and a supporting frame is arranged on the outer side of the base frame; a mounting hole is formed in the inner side of each supporting frame and is used for supporting a longitudinal steel pipe; a power assembly is arranged in the base and comprises a first rotating shaft, the first rotating shaft is rotationally connected with the base, and a first transmission gear is fixedly connected to the outer side of the first rotating shaft. According to the supporting structure for the water conservancy project, through the structural matching design of the supporting frames and the mounting holes, when a pipe shed structure is constructed at a tunnel portal through steel pipes in a long distance, the steel pipes can be conveniently supported and connected at intervals according to the stress condition of the steel pipes; rock before tunnel excavation can be conveniently surrounded and supported by the pipe shed structure, the stress between the steel pipes is improved, the supporting time of the steel pipes is prolonged, the stability and safety of the steel pipes during pipe shed supporting are ensured, and the using effect of the device is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic engineering, and particularly relates to a support structure for hydraulic engineering. Background Art

[0002] Hydraulic engineering is the general term for various engineering constructions built to control, utilize, and protect surface and underground water resources and the environment.

[0003] When starting to excavate a tunnel, it is necessary to build an advanced pipe shed according to the geological conditions at the construction site. After the geological conditions are explored, the characteristics of steel pipes are used to lay steel pipes at the tunnel entrance and the front section of the tunnel. In the existing technology of pipe shed laying, steel pipes connected in extension are usually used to support the surrounding rock at the tunnel entrance. However, due to the large force-bearing situation of the steel pipes supporting the surrounding rock, the supporting effect is not good, and the steel pipes will be damaged after long-term force. In order to better ensure the force-bearing of the steel pipes and increase the supporting time of the lever, the force-bearing steel pipes are connected and supported at intervals.

[0004] Therefore, this application proposes a support structure for hydraulic engineering to provide a new technical solution to solve the above-mentioned technical problems. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a support structure for hydraulic engineering. Through the structural cooperation design of the support frame and the installation holes, when using steel pipes to build a pipe shed structure for a long distance at the tunnel entrance, it is convenient to support and connect the steel pipes at intervals according to the force-bearing situation of the steel pipes, which is convenient for the pipe shed structure to support and enclose the rock before tunnel excavation, improves the force between the steel pipes, increases the supporting time of the steel pipes, ensures the stability and safety of the steel pipes during pipe shed support, and further improves the use effect of the device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A support structure for hydraulic engineering is applied to an advanced pipe shed structure.

[0008] The support structure for hydraulic engineering specifically includes:

[0009] A base, a base frame is fixedly connected to the upper end of the base, and a support frame is arranged outside the base frame; the number of the support frames is multiple, and an installation hole is formed inside each support frame for longitudinally supporting steel pipes;

[0010] A power component is arranged inside the base. The power component includes a first rotating shaft which is rotatably connected to the base. A first transmission gear is fixedly connected to the outer side of the first rotating shaft. A driving mechanism is further arranged inside the base, and the output end of the driving mechanism is connected to the end of the first rotating shaft;

[0011] A fixed limiting sleeve is fixedly connected to the outer side of the base frame. The number of the fixed limiting sleeves corresponds to the number of the support frames, and the position of the fixed limiting sleeve corresponds to the position of the adjacent support frame;

[0012] An adjusting component is arranged inside the fixed limiting sleeve. One end of the adjusting component is connected to the support frame at the corresponding position, and the other end of the adjusting component is connected to the power component;

[0013] A support component is arranged at the position between the base frame and the support frame on the outer side of the fixed limiting sleeve. The support component is used to cooperate with the adjusting component to lift the support frame.

[0014] As a preferred embodiment of the support structure for water conservancy projects provided by the present invention, the adjusting component includes a guiding screw sleeve which is located inside the fixed limiting sleeve. The guiding screw sleeve is rotatably connected to the fixed limiting sleeve. A follower column is fixedly connected to the bottom of the guiding screw sleeve. A linkage column is fixedly connected to the bottom of the follower column. One end of the linkage column extends into the base. The end of the linkage column located inside the base is fixedly connected to a second transmission gear which is meshed with the first transmission gear. The linkage column is rotatably connected to the base.

[0015] As a preferred embodiment of the support structure for water conservancy projects provided by the present invention, the adjusting component further includes an adjusting column. The adjusting column is threadedly connected to the inside of the guiding screw sleeve. A first connecting seat is fixedly connected to the top end of one end of the adjusting column. A T-shaped lifting groove is formed on one side of the adjusting column. An L-shaped part is slidably connected to the inside of the T-shaped lifting groove. A T-shaped part is fixedly connected to the end of the L-shaped part away from the adjusting column. The bottom end of the T-shaped part is fixedly connected to the fixed limiting sleeve.

[0016] As a preferred embodiment of the support structure for water conservancy projects provided by the present invention, the adjusting component further includes a first connecting arm. Activity cavities one and two are respectively formed on both sides of the bottom of the support frame. A connecting groove is formed at the center position of the bottom of the support frame. A first connecting arm is arranged inside the connecting groove. Both ends of the first connecting arm respectively extend into the inside of the activity cavities one and two. The top end of the first connecting seat is located inside the connecting groove. The first connecting arm is threadedly connected to the support frame and the first connecting arm is threadedly connected to the first connecting seat.

[0017] As a preferred embodiment of the support structure for water conservancy projects provided by the present invention, the support assembly includes an annular frame, which is fixed to the outer side of the end of the fixed limit sleeve away from the base. Fastening sleeves are detachably connected to both sides of the annular frame. At a position corresponding to the fastening sleeve on the outer side of the annular frame, fastening bolts are provided. The fastening bolts penetrate through the corresponding fastening sleeves and are threadedly connected to the annular frame. A second connecting seat is detachably connected to the outer side of the fastening sleeve. The top of the second connecting seat is rotatably connected to a third connecting seat. A connecting frame is fixedly connected to the outer side of the third connecting seat. An intermediate arm is fixedly connected to the outer side of the connecting frame. A lifting assembly is arranged inside the intermediate arm and is used for connecting and supporting the support frame.

[0018] As a preferred embodiment of the support structure for water conservancy projects provided by the present invention, the lifting assembly includes a guiding rod. The guiding rod is fixedly connected to the center position inside the intermediate arm. A sliding screw is slidably connected to the outer side of the guiding rod. A positioning nut is threadedly connected to the outer side of the sliding screw away from the second connecting seat. A third transmission gear is fixedly connected to the outer side of the positioning nut. An adjusting socket is rotatably connected to a position corresponding to the positioning nut on one side of the intermediate arm. A fourth transmission gear is fixedly connected to the end of the adjusting socket located inside the intermediate arm. The fourth transmission gear is meshed with the third transmission gear. A connecting short arm is fixedly connected to the end of the sliding screw away from the second connecting seat. A fourth connecting seat is fixedly connected to the end of the connecting short arm away from the second connecting seat. A lifting rod is rotatably connected to the inside of the fourth connecting seat, and the lifting rod is fixed to the support frame at the corresponding position.

[0019] As a preferred embodiment of the support structure for water conservancy projects provided by the present invention, support grooves are respectively formed at positions corresponding to the intermediate arms at the bottom of the support frames.

[0020] As a preferred embodiment of the support structure for water conservancy projects provided by the present invention, moving wheels are fixedly connected to the bottom ends of the base and the base frame, and a pouring strip is fixedly connected to the outer side of the support frame.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The support structure for water conservancy projects provided by the present invention, through the structural cooperation design of the support frame and the installation holes, when using steel pipes to build a pipe shed structure for a long distance at the tunnel entrance, it is convenient to support and connect the steel pipes at intervals according to the stress situation of the steel pipes, which is convenient for enclosing and supporting the rocks before the tunnel excavation by the pipe shed structure, improving the stress between the steel pipes, increasing the support time of the steel pipes, ensuring the stability and safety of the steel pipes during pipe shed support, and further improving the use effect of the device.

[0023] The support structure for water conservancy projects provided by the present invention, through the structural cooperation design of the middle arm, sliding screw and connecting seat four, facilitates the connection of the steel pipes for building the pipe shed at a certain distance, and then strengthens the connection between them, forming a second support force. On the basis of the original support force of the steel pipes, the support force is further increased, the support force of the device during use is improved, the support rigidity of the device is enhanced, and the use effect of the device is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the solutions in the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the support structure for water conservancy projects provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the power assembly of the support structure for water conservancy projects provided by the present invention;

[0027] Figure 3 It is a schematic diagram of the connection structure of the adjusting column of the support structure for water conservancy projects provided by the present invention;

[0028] Figure 4 It is a schematic diagram of the connection structure of the lifting assembly of the support structure for water conservancy projects provided by the present invention;

[0029] Figure 5 It is a bottom view of the structure of the support frame of the support structure for water conservancy projects provided by the present invention.

[0030] The markings in the figure are explained as follows:

[0031] 1. Base; 2. Base frame; 3. Support frame; 4. Mounting hole; 5. Rotating shaft one; 6. Driving gear one; 7. Driving mechanism; 8. Fixed limiting sleeve; 9. Guiding screw sleeve; 10. Follow-up column; 11. Linking column; 12. Driving gear two; 13. Adjusting column; 14. Connecting seat one; 15. T-shaped part; 16. L-shaped part; 17. Active cavity one; 18. Active cavity two; 19. Connecting arm one; 20. Linking seat; 21. Ring-shaped frame; 22. Fastening sleeve; 23. Fastening bolt; 24. Connecting seat two; 25. Connecting seat three; 26. Connecting frame; 27. Middle arm; 28. Guiding rod; 29. Sliding screw; 30. Positioning screw sleeve; 31. Driving gear three; 32. Driving gear four; 33. Adjusting socket; 34. Connecting short arm; 35. Connecting seat four; 36. Lifting rod; 37. Lifting groove; 38. Moving wheel; 39. Pouring strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] As described in the background art, in the existing pipe shed laying, steel pipes connected in extension are usually used to support the surrounding rock of the tunnel entrance. However, due to the large stress condition of the steel pipes supporting the surrounding rock, the supporting effect is not good, and the steel pipes will be damaged after long-term stress. In order to better ensure the stress of the steel pipes and extend the supporting time of the lever, the stressed steel pipes are connected and supported at intervals.

[0034] To solve this technical problem, the present invention provides a support structure for water conservancy projects, which is applied to the advanced pipe shed structure.

[0035] Specifically, please refer to Figure 1 - Figure 5 , the support structure for water conservancy projects specifically includes:

[0036] A base 1, a base frame 2 is fixedly connected to the upper end of the base 1, and a support frame 3 is arranged outside the base frame 2; the number of the support frames 3 is multiple, and an installation hole 4 is opened inside each support frame 3 for longitudinal steel pipe support;

[0037] A power assembly is arranged inside the base 1. The power assembly includes a first rotating shaft 5, the first rotating shaft 5 is rotatably connected to the base 1, a first transmission gear 6 is fixedly connected to the outside of the first rotating shaft 5, and a driving mechanism 7 is further arranged inside the base 1. The output end of the driving mechanism 7 is connected to the end of the first rotating shaft 5;

[0038] A fixed limit sleeve 8 is fixedly connected to the outside of the base frame 2. The number of the fixed limit sleeves 8 corresponds to the number of the support frames 3, and the position of the fixed limit sleeve 8 corresponds to the position of the adjacent support frame 3;

[0039] An adjusting assembly is arranged inside the fixed limit sleeve 8. One end of the adjusting assembly is connected to the support frame 3 at the corresponding position, and the other end of the adjusting assembly is connected to the power assembly;

[0040] A support assembly is arranged at the outside of the fixed limit sleeve 8 and at the position between the base frame 2 and the support frame 3. The support assembly is used to cooperate with the adjusting assembly to lift the support frame 3.

[0041] The support structure for water conservancy projects provided by the present invention, through the structural cooperation design of the support frame 3 and the installation hole 4, when using steel pipes to build a pipe shed structure for a long distance at the tunnel entrance, it is convenient to support and connect the steel pipes at intervals according to the stress situation of the steel pipes, facilitating the enclosure and support of the rock before the tunnel excavation by the pipe shed structure, improving the stress between the steel pipes, increasing the support time of the steel pipes, ensuring the stability and safety of the steel pipes during pipe shed support, and further improving the use effect of the device.

[0042] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0043] Please refer to Figure 1 - Figure 5 , a support structure for water conservancy projects, which includes:

[0044] A base 1, the upper end of the base 1 is fixedly connected with a base frame 2, and a support frame 3 is arranged outside the base frame 2; the number of support frames 3 is multiple, and an installation hole 4 is opened inside each support frame 3 for longitudinal steel pipe support; wherein, in order to facilitate the movement of the device, moving wheels 38 are fixedly connected to the bottom ends of the base 1 and the base frame 2, and a casting strip 39 is fixedly connected to the outside of the support frame 3, facilitating the pouring of cement connection between the support frame 3 and the external rock.

[0045] A power assembly is arranged inside the base 1. Specifically, the power assembly includes a first rotating shaft 5, the first rotating shaft 5 is rotatably connected with the base 1, a first transmission gear 6 is fixedly connected to the outside of the first rotating shaft 5, and a driving mechanism 7 is further arranged inside the base 1, and the output end of the driving mechanism 7 is connected to the end of the first rotating shaft 5;

[0046] A fixed limiting sleeve 8 is fixedly connected to the outside of the base frame 2, the number of fixed limiting sleeves 8 corresponds to the number of support frames 3, and the position of the fixed limiting sleeve 8 corresponds to the position of the adjacent support frame 3;

[0047] An adjusting assembly is arranged inside the fixed limiting sleeve 8, one end of the adjusting assembly is connected to the support frame 3 at the corresponding position, and the other end of the adjusting assembly is connected to the power assembly;

[0048] Specifically, the adjusting assembly includes a guiding screw sleeve 9, the guiding screw sleeve 9 is located inside the fixed limiting sleeve 8, the guiding screw sleeve 9 is rotatably connected with the fixed limiting sleeve 8, a follower column 10 is fixedly connected to the bottom of the guiding screw sleeve 9, a linkage column 11 is fixedly connected to the bottom of the follower column 10, one end of the linkage column 11 extends into the base 1, and a second transmission gear 12 is fixedly connected to the end of the linkage column 11 located inside the base 1, the second transmission gear 12 is meshed with the first transmission gear 6, and the linkage column 11 is rotatably connected with the base 1.

[0049] Further, the adjusting assembly further includes an adjusting column 13. The inner side of the guiding screw sleeve 9 is threadedly connected with the adjusting column 13. One end of the adjusting column 13 is fixedly connected with a first connecting seat 14. A T-shaped lifting groove is formed on one side of the adjusting column 13. An L-shaped member 16 is slidably connected inside the T-shaped lifting groove. One end of the L-shaped member 16 away from the adjusting column 13 is fixedly connected with a T-shaped member 15. The bottom end of the T-shaped member 15 is fixedly connected with the fixed limiting sleeve 8.

[0050] Further, the adjusting assembly further includes a first connecting arm 19. On both sides of the bottom of the support frame 3, a first movable cavity 17 and a second movable cavity 18 are respectively formed. A connecting groove is formed at the center position of the bottom of the support frame 3. A first connecting arm 19 is arranged inside the connecting groove. Both ends of the first connecting arm 19 respectively extend to the inside of the first movable cavity 17 and the second movable cavity 18. The top end of the first connecting seat 14 is located inside the connecting groove. The first connecting arm 19 is threadedly connected with the support frame 3 and the first connecting arm 19 is threadedly connected with the first connecting seat 14.

[0051] During operation, according to the size of the tunnel to be excavated as required, the dimensions required by the measuring device are measured. By starting the driving mechanism 7, the rotating shaft 5 and the first transmission gear 6 at the output end of the driving mechanism 7 rotate. Then, the first transmission gear 6 drives the second transmission gear 12 and the linkage column 11 to rotate, so that the linkage column 11 drives the follower column 10 and the guiding screw sleeve 9 to rotate inside the fixed limiting sleeve 8. Then, the guiding screw sleeve 9 drives the adjusting column 13 inside it to rotate through the thread groove inside it. Then, the adjusting column 13 drives the support frame 3 on it to move away from the base 1 in the direction through the limitation of the T-shaped member 15 and the L-shaped member 16 on the fixed limiting sleeve 8.

[0052] After the support frame 3 moves to an appropriate distance, the steel pipe for building the pipe shed is inserted into the installation hole 4, and then the steel pipe on the support frame 3 is connected to the longitudinal steel pipe.

[0053] A support assembly is arranged at the position between the base frame 2 and the support frame 3 on the outer side of the fixed limiting sleeve 8. The support assembly is used to cooperate with the adjusting assembly to lift the support frame 3. Specifically, the support assembly includes an annular frame 21. The annular frame 21 is fixed on the outer side of the end of the fixed limiting sleeve 8 away from the base 1. Both sides of the annular frame 21 are detachably connected with fastening sleeves 22. A fastening bolt 23 is arranged at the position corresponding to the fastening sleeve 22 on the outer side of the annular frame 21. The fastening bolt 23 passes through the corresponding fastening sleeve 22 and is threadedly connected with the annular frame 21. The outer side of the fastening sleeve 22 is detachably connected with a second connecting seat 24. The top of the second connecting seat 24 is rotatably connected with a third connecting seat 25. A connecting frame 26 is fixedly connected to the outer side of the third connecting seat 25. An intermediate arm 27 is fixedly connected to the outer side of the connecting frame 26. A lifting assembly is arranged inside the intermediate arm 27. The lifting assembly is used to connect with the support frame 3 for use.

[0054] Specifically, the lifting component includes a guiding rod 28. The guiding rod 28 is fixedly connected to the inner center position of the middle arm 27. A sliding screw 29 is slidably connected to the outer side of the guiding rod 28. A positioning nut 30 is threadedly connected to the outer side of the sliding screw 29 away from the second connecting seat 24. A third transmission gear 31 is fixedly connected to the outer side of the positioning nut 30. One side of the middle arm 27 and at a position corresponding to the positioning nut 30 is rotatably connected with an adjusting socket 33. One end of the adjusting socket 33 located inside the middle arm 27 is fixedly connected with a fourth transmission gear 32. The fourth transmission gear 32 is meshed and connected with the third transmission gear 31. One end of the sliding screw 29 away from the second connecting seat 24 is fixedly connected with a connecting short arm 34. The end of the connecting short arm 34 away from the second connecting seat 24 is fixedly connected with a fourth connecting seat 35. A lifting rod 36 is rotatably connected to the inside of the fourth connecting seat 35. The lifting rod 36 is fixed to the corresponding support 3.

[0055] Wherein, support grooves 37 are respectively formed at the bottom of the support 3 and at positions corresponding to the middle arm 27.

[0056] During operation, after the support 3 is connected to the steel pipe on the pipe shed, by rotating the fastening bolt 23 in a direction away from the fastening sleeve 22, the limit on the fastening sleeve 22 is released. After the limit on the fastening sleeve 22 is released, the fastening sleeve 22 is taken out from the annular frame 21. Then, an external tool is used to rotate the adjusting socket 33, so that the adjusting socket 33 drives the fourth transmission gear 32 to rotate. Then, the fourth transmission gear 32 drives the third transmission gear 31 and the positioning nut 30 to rotate, so that the positioning nut 30 drives the sliding screw 29 therein to move in a direction away from the second connecting seat 24 under the limit of the guiding rod 28. Thus, the two corresponding second connecting seats 24 are adjusted to appropriate positions. Then, the two corresponding second connecting seats 24 are slid on the third connecting seat 25 and then snapped together. External steel bars are inserted and fastened to fix and support between two adjacent supports 3. Through the design of multiple supports 3, the supports 3 at the top and on both sides are fixed through the corresponding second connecting seats 24. The supports 3 on both sides are connected to the cement columns cast on the ground at the tunnel entrance through the second connecting seats 24 thereon. Thus, the supports 3 and the erected pipe shed are fixedly supported.

[0057] The advanced pipe shed structure for tunnel use provided in this embodiment realizes a semi-automatic operation process of increasing the support and fixation between the transverse pipe shed and the longitudinal pipe shed through simple rotational movement and snap connection. It is convenient to support and connect the steel pipes at intervals according to the stress conditions of the steel pipes. It is convenient to support and enclose the rock before tunnel excavation with the pipe shed structure, improve the stress between the steel pipes, extend the support time of the steel pipes, ensure the stability and safety of the steel pipes during pipe shed support, and further improve the use effect of the device.

Claims

1. A support structure for a water conservancy project, characterized in that Including: A base (1), the upper end of the base (1) is fixedly connected with a base frame (2), and a support frame (3) is arranged outside the base frame (2); the number of the support frames (3) is multiple, and an installation hole (4) is formed in the inner side of each support frame (3) for supporting a longitudinal steel pipe; A power assembly is arranged inside the base (1), the power assembly includes a first rotating shaft (5), the first rotating shaft (5) is rotatably connected with the base (1), a first transmission gear (6) is fixedly connected to the outer side of the first rotating shaft (5), a driving mechanism (7) is further arranged inside the base (1), and the output end of the driving mechanism (7) is connected to the end of the first rotating shaft (5); A fixed limit sleeve (8) is fixedly connected to the outer side of the base frame (2), the number of the fixed limit sleeves (8) corresponds to the number of the support frames (3), and the position of the fixed limit sleeve (8) corresponds to the position of the adjacent support frame (3); An adjusting assembly is arranged inside the fixed limit sleeve (8), one end of the adjusting assembly is connected to the support frame (3) at the corresponding position, and the other end of the adjusting assembly is connected to the power assembly; A support assembly is arranged at the position between the outer side of the fixed limit sleeve (8) and between the base frame (2) and the support frame (3), and the support assembly is used to cooperate with the adjusting assembly to lift the support frame (3).

2. The support structure for water conservancy projects according to claim 1, characterized in that, The adjusting assembly includes a guiding screw sleeve (9), the guiding screw sleeve (9) is located inside the fixed limit sleeve (8), the guiding screw sleeve (9) is rotatably connected with the fixed limit sleeve (8), a follower column (10) is fixedly connected to the bottom of the guiding screw sleeve (9), a linkage column (11) is fixedly connected to the bottom of the follower column (10), one end of the linkage column (11) extends into the base (1), a second transmission gear (12) is fixedly connected to the end of the linkage column (11) located inside the base (1), the second transmission gear (12) is meshed with the first transmission gear (6), and the linkage column (11) is rotatably connected with the base (1).

3. The support structure for water conservancy projects according to claim 2, characterized in that, The adjusting assembly further includes an adjusting column (13), the adjusting column (13) is in threaded connection with the inner side of the guiding screw sleeve (9), a first connecting seat (14) is fixedly connected to the top end of one end of the adjusting column (13), a T-shaped lifting groove is formed in one side of the adjusting column (13), an L-shaped part (16) is slidably connected to the inside of the T-shaped lifting groove, a T-shaped part (15) is fixedly connected to the end of the L-shaped part (16) away from the adjusting column (13), and the bottom end of the T-shaped part (15) is fixedly connected to the fixed limit sleeve (8).

4. The support structure for water conservancy projects according to claim 3, characterized in that, The adjusting assembly further includes a first connecting arm (19). On both sides of the bottom of the support frame (3), a first movable cavity (17) and a second movable cavity (18) are respectively formed. At the center position of the bottom of the support frame (3), a connecting groove is formed. Inside the connecting groove, a first connecting arm (19) is arranged. Both ends of the first connecting arm (19) extend to the inner sides of the first movable cavity (17) and the second movable cavity (18). The top end of the first connecting seat (14) is located inside the connecting groove. The first connecting arm (19) is in threaded connection with the support frame (3) and the first connecting arm (19) is in threaded connection with the first connecting seat (14).

5. The support structure for water conservancy projects according to claim 4, characterized in that, The support assembly includes an annular frame (21). The annular frame (21) is fixed to the outer side of the end of the fixed limit sleeve (8) away from the base (1). On both sides of the annular frame (21), fastening sleeves (22) are detachably connected. At a position on the outer side of the annular frame (21) corresponding to the fastening sleeve (22), a fastening bolt (23) is arranged. The fastening bolt (23) passes through the corresponding fastening sleeve (22) and is in threaded connection with the annular frame (21). On the outer side of the fastening sleeve (22), a second connecting seat (24) is detachably connected. On the top of the second connecting seat (24), a third connecting seat (25) is rotatably connected. On the outer side of the third connecting seat (25), a connecting frame (26) is fixedly connected. On the outer side of the connecting frame (26), an intermediate arm (27) is fixedly connected. Inside the intermediate arm (27), a lifting assembly is arranged. The lifting assembly is used for connecting with the support frame (3).

6. The support structure for water conservancy projects according to claim 5, characterized in that, The lifting assembly includes a guiding rod (28). At the center position inside the intermediate arm (27), a guiding rod (28) is fixedly connected. On the outer side of the guiding rod (28), a sliding screw rod (29) is slidably connected. On the outer side of the sliding screw rod (29) away from the second connecting seat (24), a positioning nut (30) is in threaded connection. On the outer side of the positioning nut (30), a third transmission gear (31) is fixedly connected. On one side of the intermediate arm (27) and at a position corresponding to the positioning nut (30), an adjusting socket (33) is rotatably connected. At the end of the adjusting socket (33) located inside the intermediate arm (27), a fourth transmission gear (32) is fixedly connected. The fourth transmission gear (32) is meshed with the third transmission gear (31). At the end of the sliding screw rod (29) away from the second connecting seat (24), a short connecting arm (34) is fixedly connected. At the end of the short connecting arm (34) away from the second connecting seat (24), a fourth connecting seat (35) is fixedly connected. Inside the fourth connecting seat (35), a lifting rod (36) is rotatably connected. The lifting rod (36) is fixed to the support frame (3) at the corresponding position.

7. The support structure for water conservancy projects according to claim 6, characterized in that, At positions on the bottom of the support frame (3) corresponding to the intermediate arm (27), support grooves (37) are respectively formed.

8. The support structure for water conservancy projects according to claim 7, characterized in that, At the bottom ends of the base (1) and the base frame (2), moving wheels (38) are fixedly connected. On the outer side of the support frame (3), a casting strip (39) is fixedly connected.

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