Hydraulic construction pipeline hoisting device with angle adjustment function

Abstract

The present invention relates to the technical field of water conservancy pipeline installation, and discloses a water conservancy construction pipeline lifting device with an angle adjustment function, which includes a lifting structure, two suspension structures, two belt feeding structures and two jacking structures; wherein, the lifting structure includes a suspension gantry, two sliding frames, two first lifting devices and two second lifting devices. Both of the two sliding frames are slidably installed on the top of the suspension gantry. The two first lifting devices are respectively installed on the two sliding frames, and the two second lifting devices are respectively installed at both ends of the suspension gantry. Through the combined use of the jacking structure and the two second lifting devices, the present invention can quickly lift the pipeline and separate it from the ground, reducing the tediousness and danger of manual handling. The unique triangular support structure in the jacking structure ensures the stability of the pipeline during the lifting process, effectively avoiding the shaking of the pipeline and improving the safety of construction.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy pipeline installation, and particularly to a water conservancy construction pipeline hoisting device with an angle adjustment function. Background Art

[0002] A water conservancy construction pipeline hoisting device is a mechanical equipment or device combination specifically used in water conservancy projects to lift pipelines from the ground or other positions to the required height or installation position.

[0003] In the prior art, the conventional method of hoisting pipelines during water conservancy construction is that workers use lifting equipment to hoist the pipeline through two lifting belts, adjust it to the appropriate installation position, and then carry out the assembly work of the pipeline. However, there are significant drawbacks in the arrangement method of the lifting belts in this process. Specifically, the two lifting belts are respectively arranged at both ends of the pipeline. During actual operation, workers need to bypass the pipeline from below the pipeline to be able to set the lifting belts on the pipeline. This process not only requires workers to operate below the pipeline, increasing the risk and difficulty of operation, but also consumes a large amount of time and manpower, and has a certain degree of danger.

[0004] Therefore, it is necessary to design a water conservancy construction pipeline hoisting device with an angle adjustment function to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a water conservancy construction pipeline hoisting device with an angle adjustment function to overcome the deficiencies existing in the prior art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A water conservancy construction pipeline hoisting device with an angle adjustment function includes a hoisting structure, two suspension structures, two belt feeding structures, and two jacking structures;

[0008] Among them, the hoisting structure includes a suspension gantry, two sliding frames, two first lifting devices, and two second lifting devices. The two sliding frames are both slidably installed on the top of the suspension gantry. The two first lifting devices are respectively installed on the two sliding frames, and the two second lifting devices are respectively installed at both ends of the suspension gantry;

[0009] Among them, the suspension structure includes a lifting belt and two fixed columns. The two fixed columns are respectively fixed at both ends of the lifting belt, and the two lifting belts are respectively connected to the traction ends of the two first lifting devices;

[0010] Among them, the belt feeding structure is composed of a belt feeding unit and a driving unit;

[0011] Among them, the jacking structure is composed of a jack rod, a mounting frame, a pressing structure, a sliding structure, a downward pressing structure and a positioning structure. The jack rod is fixed at the top of the mounting frame, and the two mounting frames are respectively connected to the traction ends of the two second lifting devices.

[0012] As a preferred technical solution of the present invention, the belt feeding unit includes a fixing plate, a belt feeding plate and a sliding rod. The belt feeding plate is slidably arranged on the fixing plate, and both the fixing plate and the belt feeding plate are in a semi-circular structure. One end of the belt feeding plate is provided with a slot, and the shape of the slot is adapted to that of the fixing column. An arc-shaped sliding opening is opened on the fixing plate. A sliding block is fixed on the side surface of the belt feeding plate. The sliding rod is slidably arranged in the sliding opening. A limiting plate is fixed at one end of the sliding rod away from the belt feeding plate. The fixing plate and the belt feeding plate are connected by a limiting member.

[0013] As a preferred technical solution of the present invention, the limiting member includes two side plates, a guiding rod and a guiding block. The two side plates are respectively fixed at both ends of the fixing plate. The guiding rod is fixed between the two side plates and is in an arc-shaped structure. The guiding block is slidably sleeved on the guiding rod. A connecting plate is fixed on the side surface of the guiding block, and the connecting plate is also fixedly connected to the belt feeding plate.

[0014] As a preferred technical solution of the present invention, the outer surface of the fixing plate is in contact with the side surface of the guiding block.

[0015] As a preferred technical solution of the present invention, the driving unit includes an assembly plate, a support and a driving motor. The assembly plate is fixed on the fixing plate. The support is installed at one end of the assembly plate away from the fixing plate. The driving motor is installed on the support. A gear is assembled on the output shaft of the driving motor. A toothed plate is fixed on the belt feeding plate. A plurality of teeth are arranged on the toothed plate, and the toothed plate meshes with the gear.

[0016] As a preferred technical solution of the present invention, the pressing structure includes a support plate, a through opening and two pressing rods. The support plate is fixed at one end of the mounting frame away from the jack rod. The through opening is opened on the side surface of the support plate. The two pressing rods are respectively movably inserted at both ends of the through opening. The two pressing rods are connected by a first spring.

[0017] As a preferred technical solution of the present invention, the sliding structure includes an opening, two limiting blocks, two guiding plates and a pressing plate. The opening is opened on the side surface of the support plate and is communicated with the through opening. The two limiting blocks are respectively fixed on the two pressing rods, and both the two limiting blocks are slidably arranged in the opening. The two guiding plates are respectively fixed on the side surfaces of the two limiting blocks. The two guiding plates are both inclined, and the inclination directions of the two guiding plates are opposite. The pressing plate is placed between the two guiding plates.

[0018] As a preferred technical solution of the present invention, the pressing-down structure includes a connecting frame, a through-hole, and two anti-detachment sleeve plates. The connecting frame is fixed to the top surface of the pressing plate. The through-hole is opened on the side surface of the mounting frame. One end of the connecting frame away from the pressing plate extends into the through-hole, and the connecting frame is slidably arranged in the through-hole. Both of the two anti-detachment sleeve plates are fixedly sleeved on the end of the connecting frame away from the pressing plate, and the two anti-detachment sleeve plates are respectively located on both sides of the mounting frame. The connecting frame and the top rod are connected by a tension spring.

[0019] As a preferred technical solution of the present invention, the positioning structure includes an outer cylinder, an inner rod, a connecting rod, a movable rack, and a fixed rack. The outer cylinder is fixed to the end of the connecting frame away from the pressing plate. The inner rod is slidably arranged in the outer cylinder. The outer cylinder and the inner rod are connected by a second spring. One end of the connecting rod is fixedly connected to the inner rod, and the other end of the connecting rod is fixedly connected to the movable rack. The fixed rack is fixed to the side surface of the mounting frame, and the fixed rack and the movable rack are arranged opposite to each other.

[0020] As a preferred technical solution of the present invention, a handle is installed at the end of the inner rod located outside the outer cylinder.

[0021] The present invention has the following beneficial effects:

[0022] 1. Improve construction efficiency and safety: Through the combined use of the jacking structure and two second hoisting devices, the device can quickly lift the pipeline and separate it from the ground, reducing the cumbersome and dangerous manual handling. The unique triangular support structure in the jacking structure ensures the stability of the pipeline during the hoisting process, effectively avoiding the pipeline from shaking and improving the safety of construction.

[0023] 2. Automatically assemble the lifting belt and simplify the operation process: The introduction of the belt feeding structure realizes the automatic assembly of the lifting belt, eliminating the need for manual winding around the bottom of the pipeline. This greatly simplifies the operation process, saves time and labor costs. The components such as the drive motor, gears, and toothed plates in the belt feeding structure work together to ensure that the lifting belt can accurately and efficiently bypass the pipeline, improving the construction efficiency.

[0024] 3. Stable structure and ensure construction quality: Both the jacking structure and the belt feeding structure adopt stable designs, such as the triangular support structure and the limiting functions of the guide rod and guide block, ensuring the stability and reliability during the entire hoisting process. The function of controlling the pipeline angle by pushing and pulling the pipeline enables construction workers to more flexibly adjust the pipeline position, meeting the requirements of different construction scenarios and ensuring the stability of construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a water conservancy construction pipeline lifting device with an angle adjustment function proposed by the present invention;

[0026] Figure 2 Schematic diagram of the state when lifting the pipeline according to the present invention;

[0027] Figure 3 Schematic diagram of the belt feeding structure;

[0028] Figure 4 Schematic diagram of the belt feeding structure from another perspective;

[0029] Figure 5 Schematic diagram of the structure when the fixing plate and the belt feeding plate are staggered;

[0030] Figure 6 Schematic diagram of the jacking structure;

[0031] Figure 7 Schematic diagram of the jacking structure from another perspective;

[0032] Figure 8 Schematic cross-sectional view of the connecting frame;

[0033] Figure 9 Schematic cross-sectional view of the support plate;

[0034] Figure 10 For Figure 1 Enlarged view of the structure at position A;

[0035] Figure 11 For Figure 7 Enlarged view of the structure at position B;

[0036] Figure 12 For Figure 8 Enlarged view of the structure at position C.

[0037] In the figure: 11, suspension gantry; 12, sliding frame; 13, first lifting device; 14, second lifting device; 21, lifting belt; 22, fixed column; 31, fixing plate; 32, belt feeding plate; 33, slot; 34, sliding opening; 35, sliding rod; 36, limiting plate; 37, side plate; 38, guiding rod; 39, guiding block; 310, connecting plate; 41, assembly plate; 42, support; 43, driving motor; 44, gear; 45, toothed plate; 50a, ejector rod; 50b, mounting frame; 51, support plate; 52, through hole; 53, pressing rod; 54, first spring; 61, opening; 62, limiting block; 63, guiding plate; 64, pressing plate; 71, connecting frame; 72, through opening; 73, anti-detachment sleeve plate; 74, tension spring; 81, outer cylinder; 82, inner rod; 83, second spring; 84, connecting rod; 85, movable rack; 86, fixed rack. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments.

[0039] Referring to Figure 1-12 , a hoisting device for a water conservancy construction pipeline with an angle adjustment function includes a hoisting structure, two suspension structures, two belt feeding structures, and two jacking structures. The hoisting structure includes a suspension gantry 11, two sliding frames 12, two first lifting devices 13, and two second lifting devices 14. The two sliding frames 12 are both slidably installed on the top of the suspension gantry 11. The two first lifting devices 13 are respectively installed on the two sliding frames 12. The two second lifting devices 14 are respectively installed at both ends of the suspension gantry 11. The suspension structure includes a lifting belt 21 and two fixed columns 22. The two fixed columns 22 are respectively fixed at both ends of the lifting belt 21. The two lifting belts 21 are respectively connected to the traction ends of the two first lifting devices 13;

[0040] The belt feeding structure is composed of a belt feeding unit and a driving unit. The belt feeding unit includes a fixing plate 31, a belt feeding plate 32, and a sliding rod 35. The belt feeding plate 32 is slidably arranged on the fixing plate 31, and both the fixing plate 31 and the belt feeding plate 32 are in a semi-circular structure. One end of the belt feeding plate 32 is provided with a slot 33, and the slot 33 is adapted to the shape of the fixed column 22. The fixing plate 31 is provided with an arc-shaped sliding opening 34. A slider is fixed on the side surface of the belt feeding plate 32. The sliding rod 35 is slidably arranged in the sliding opening 34. A limiting plate 36 is fixed at the end of the sliding rod 35 away from the belt feeding plate 32. The fixing plate 31 and the belt feeding plate 32 are connected by a limiting member. The limiting member includes two side plates 37, a guiding rod 38, and a guiding block 39. The two side plates 37 are respectively fixed at both ends of the fixing plate 31. The guiding rod 38 is fixed between the two side plates 37, and the guiding rod 38 is in an arc-shaped structure. The guiding block 39 is slidably sleeved on the guiding rod 38. A connecting plate 310 is fixed on the side surface of the guiding block 39, and the connecting plate 310 is also fixed to the belt feeding plate 32. The outer surface of the fixing plate 31 is in contact with the side surface of the guiding block 39;

[0041] The driving unit includes an assembly plate 41, a support 42 and a driving motor 43. The assembly plate 41 is fixed on the fixed plate 31. The support 42 is installed at one end of the assembly plate 41 away from the fixed plate 31. The driving motor 43 is installed on the support 42. A gear 44 is assembled on the output shaft of the driving motor 43. A toothed plate 45 is fixed on the belt feeding plate 32. A number of teeth are provided on the toothed plate 45, and the toothed plate 45 meshes with the gear 44. One end of the lifting belt 21, the fixing column 22, is connected to the traction end of the first lifting device 13 through a sling. The staff inserts the fixing column 22 at the other end of the lifting belt 21 into the slot 33. When feeding the belt, the staff moves the fixed plate 31 to one side of the pipeline and starts the driving motor 43. When the driving motor 43 operates, it can drive the gear 44 to rotate. When the gear 44 rotates, it drives the toothed plate 45 meshing with it to rotate, which causes the belt feeding plate 32 to rotate. When the belt feeding plate 32 rotates, it can drive the fixing rod inserted in the slot 33 to move;

[0042] The jacking structure consists of a jacking rod 50a, a mounting frame 50b, a pressing structure, a sliding structure, a pressing-down structure and a positioning structure. The jacking rod 50a is fixed at the top of the mounting frame 50b. The two mounting frames 50b are respectively connected to the traction ends of the two second lifting devices 14. The pressing structure includes a support plate 51, a through hole 52 and two pressing rods 53. The support plate 51 is fixed at one end of the mounting frame 50b away from the jacking rod 50a. The through hole 52 is opened on the side of the support plate 51. The two pressing rods 53 are respectively inserted into both ends of the through hole 52 in a movable manner. The two pressing rods 53 are connected by a first spring 54. The sliding structure includes an opening 61, two limiting blocks 62, two guiding plates 63 and a pressing plate 64. The opening 61 is opened on the side of the support plate 51, and the opening 61 communicates with the through hole 52. The two limiting blocks 62 are respectively fixed on the two pressing rods 53, and the two limiting blocks 62 are both slidably arranged in the opening 61. The two guiding plates 63 are respectively fixed on the sides of the two limiting blocks 62. The two guiding plates 63 are both inclined, and the inclined directions of the two guiding plates 63 are opposite. The pressing plate 64 is placed between the two guiding plates 63. The jacking rod 50a and the two pressing rods 53 together form a triangular support structure, which can stably provide fixation for the fixation, so as to ensure the stability of the pipeline when it is lifted and prevent the pipeline from shaking during the rising process;

[0043] The pressing-down structure includes a connecting frame 71, a through hole 72 and two anti-disengagement sleeve plates 73. The connecting frame 71 is fixed to the top surface of the pressing plate 64. The through hole 72 is opened on the side surface of the mounting frame 50b. One end of the connecting frame 71 away from the pressing plate 64 extends into the through hole 72, and the connecting frame 71 is slidably arranged in the through hole 72. The two anti-disengagement sleeve plates 73 are both fixedly sleeved on one end of the connecting frame 71 away from the pressing plate 64, and the two anti-disengagement sleeve plates 73 are respectively located on both sides of the mounting frame 50b. The connecting frame 71 and the ejector rod 50a are connected by a tension spring 74. The positioning structure includes an outer cylinder 81, an inner rod 82, a connecting rod 84, a movable rack 85 and a fixed rack 86. The outer cylinder 81 is fixed to one end of the connecting frame 71 away from the pressing plate 64. The inner rod 82 is slidably arranged in the outer cylinder 81. A grip is installed at one end of the inner rod 82 located outside the outer cylinder 81. The outer cylinder 81 and the inner rod 82 are connected by a second spring 83. One end of the connecting rod 84 is fixedly connected to the inner rod 82, and the other end of the connecting rod 84 is fixedly connected to the movable rack 85. The fixed rack 86 is fixed to the side surface of the mounting frame 50b, and the fixed rack 86 and the movable rack 85 are arranged opposite to each other. First, the staff inserts the ejector rod 50a into the pipe orifice position of the pipeline, and then pulls the grip on the inner rod 82 to move the inner rod 82. When the inner rod 82 moves, it can drive the movable rack 85 to move through the connecting rod until the movable rack 85 is separated from the fixed rack 86. Without the restriction of the movable rack 85, the connecting frame 71 can slide freely in the through hole 72. Then, the staff pulls the connecting frame 71 downward, so that the connecting frame 71 drives the pressing plate 64 to move downward. When the pressing plate 64 moves downward, it can squeeze the two inclined guide plates 63. When the two inclined guide plates 63 are squeezed, the two guide plates 63 can respectively drive the two limit blocks 62 to move, so that the two pressing rods 53 move away from each other.

[0044] The specific working principle of the present invention is as follows:

[0045] When the water conservancy construction pipeline hoisting device with an angle adjustment function proposed by the present invention is in use, the staff first moves the suspension gantry 11 directly above the water conservancy pipeline to be installed, and then arranges the two jacking structures at both ends of the pipeline respectively. The two second hoisting devices 14 and the two jacking structures are used together to lift the pipeline, so that there is a certain distance between the pipeline and the ground. Then, the staff installs the two suspension structures on the two belt conveying structures respectively, and controls the positions of the two belt conveying structures so that the two belt conveying structures are both sleeved on the pipeline. Then, the two belt conveying structures are used to complete the belt conveying action to realize the automatic winding of the hoisting belt 21 around the pipe. Finally, the staff uses the two first hoisting devices 13 to lift the two hoisting belts 21, so as to realize the hoisting of the pipeline. In addition, during the installation of the pipeline, the staff can control the angle of the pipeline by pushing and pulling the pipeline.

[0046] Specifically, in the present invention, the jacking structure is used to apply a force application point at the pipe orifice position of the pipeline, so that the pipeline can be quickly lifted and separated from the ground. For the jacking structure, the staff first inserts the jacking rod 50a into the pipe orifice position of the pipeline, and then pulls the grip on the inner rod 82 to move the inner rod 82. When the inner rod 82 moves, it can drive the movable rack 85 to move through the connecting rod until the movable rack 85 is separated from the fixed rack 86. Without the restriction of the movable rack 85, the connecting frame 71 can slide freely in the through hole 72. Then the staff pulls the connecting frame 71 downward, so that the connecting frame 71 drives the pressing plate 64 to move downward. When the pressing plate 64 moves downward, it can squeeze the two inclined guide plates 63. When the two inclined guide plates 63 are squeezed, the two guide plates 63 can drive the two limiting blocks 62 to move respectively, so that the two pressing rods 53 move away from each other until the two pressing rods 53 both press against the inner wall of the pipeline. In this case, the staff releases the grip on the inner rod 82, so that the inner rod 82 is reset under the elastic force of the second spring 83. When the inner rod 82 is reset, the connecting rod 84 and the movable rack 85 are reset accordingly until the movable rack 85 meshes with the fixed rack 86 again. At this time, the movable rack 85 and the fixed rack 86 fix the position of the connecting frame 71, and the position of the pressing plate 64 will also be fixed. When the pressing plate 64 is fixed, the positions of the two pressing rods 53 are also fixed accordingly. In this state, the jacking rod 50a and the two pressing rods 53 jointly form a triangular support structure, which can stably provide fixation for the pipeline, so as to ensure the stability of the pipeline during hoisting and prevent the pipeline from shaking during the rising process;

[0047] After the pipeline is lifted, the staff uses the belt feeding structure to realize the automatic assembly of the hoisting belt 21. Specifically, the fixing column 22 at one end of the hoisting belt 21 is connected to the traction end of the first hoisting device 13 through a sling. The staff inserts the fixing column 22 at the other end of the hoisting belt 21 into the slot 33. When feeding the belt, the staff moves the fixing plate 31 to one side of the pipeline and starts the driving motor 43. When the driving motor 43 operates, it can drive the gear 44 to rotate. When the gear 44 rotates, it drives the toothed plate 45 meshing with it to rotate, which causes the belt feeding plate 32 to rotate. When the belt feeding plate 32 rotates, it can drive the fixing rod inserted in the slot 33 to move. As Figure 5 shown, when the belt feeding plate 32 rotates to the other side of the pipeline, the hoisting belt 21 will bypass the bottom of the pipeline and extend from the other side of the pipeline, realizing the automatic assembly of the hoisting belt 21 without manually bypassing the hoisting belt 21 from the bottom of the pipeline. In addition, during the movement of the belt feeding plate 32, the guide rod 38 and the guide block 39 limit the movement of the belt feeding plate 32 to ensure the stability of the belt feeding plate 32 during movement. In addition, the setting of the sliding rod 35 and the limiting plate 36 can prevent the belt feeding plate 32 from separating from the fixing plate 31.

[0048] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A hoisting device for a water conservancy construction pipeline with an angle adjustment function, characterized in that, It includes a lifting structure, two suspension structures, two belt feeding structures and two jacking structures; Among them, the lifting structure includes a suspension gantry (11), two sliding frames (12), two first lifting devices (13) and two second lifting devices (14). The two sliding frames (12) are both slidably installed on the top of the suspension gantry (11). The two first lifting devices (13) are respectively installed on the two sliding frames (12), and the two second lifting devices (14) are respectively installed at both ends of the suspension gantry (11); Among them, the suspension structure includes a lifting belt (21) and two fixed columns (22). The two fixed columns (22) are respectively fixed at both ends of the lifting belt (21). The two lifting belts (21) are respectively connected to the traction ends of the two first lifting devices (13); Among them, the belt feeding structure is composed of a belt feeding unit and a driving unit. The belt feeding unit includes a fixing plate (31), a belt feeding plate (32) and a sliding rod (35). The belt feeding plate (32) is slidably arranged on the fixing plate (31), and both the fixing plate (31) and the belt feeding plate (32) are in a semi-circular structure. One end of the belt feeding plate (32) is provided with a slot (33), and the shape of the slot (33) is adapted to that of the fixed column (22). An arc-shaped sliding opening (34) is provided on the fixing plate (31). A slider is fixed on the side of the belt feeding plate (32). The sliding rod (35) is slidably arranged in the sliding opening (34). A limiting plate (36) is fixed at the end of the sliding rod (35) away from the belt feeding plate (32). The fixing plate (31) and the belt feeding plate (32) are connected by a limiting member; Among them, the jacking structure is composed of a jacking rod (50a), a mounting frame (50b), a pressing structure, a sliding structure, a downward pressing structure and a positioning structure. The jacking rod (50a) is fixed at the top position of the mounting frame (50b). The two mounting frames (50b) are respectively connected to the traction ends of the two second lifting devices (14). The pressing structure includes a support plate (51), a through opening (52) and two pressing rods (53). The sliding structure includes an opening (61), two limiting blocks (62), two guiding plates (63) and a pressing plate (64). The two limiting blocks (62) are respectively fixed on the two pressing rods (53), and the two limiting blocks (62) are both slidably arranged in the opening (61). The two guiding plates (63) are both inclined, and the inclination directions of the two guiding plates (63) are opposite. The two guiding plates (63) are respectively fixed on the sides of the two limiting blocks (62). The pressing plate (64) is placed between the two guiding plates (63).

2. The water conservancy construction pipeline lifting device with an angle adjustment function according to claim 1, wherein The limiting member includes two side plates (37), a guide rod (38) and a guide block (39). The two side plates (37) are respectively fixed at both ends of the fixing plate (31). The guide rod (38) is fixed between the two side plates (37), and the guide rod (38) is in an arc structure. The guide block (39) is slidably sleeved on the guide rod (38). A connecting plate (310) is fixed on the side surface of the guide block (39), and the connecting plate (310) is also fixedly connected to the belt feeding plate (32).

3. The water conservancy construction pipeline hoisting device with an angle adjustment function according to claim 2, wherein, The outer surface of the fixing plate (31) is in contact with the side surface of the guide block (39).

4. The water conservancy construction pipeline hoisting device with an angle adjustment function according to claim 2, characterized in that, The driving unit includes an assembly plate (41), a support (42) and a driving motor (43). The assembly plate (41) is fixed on the fixing plate (31). The support (42) is installed at one end of the assembly plate (41) away from the fixing plate (31). The driving motor (43) is installed on the support (42). A gear (44) is assembled on the output shaft of the driving motor (43). A toothed plate (45) is fixed on the belt feeding plate (32). A plurality of teeth are provided on the toothed plate (45), and the toothed plate (45) meshes with the gear (44).

5. The water conservancy construction pipeline hoisting device with an angle adjustment function according to claim 1, wherein, The support plate (51) is fixed at one end of the mounting frame (50b) away from the ejector rod (50a). The through hole (52) is opened on the side surface of the support plate (51). The two pressing rods (53) are respectively movably inserted at both ends of the through hole (52). The two pressing rods (53) are connected by a first spring (54).

6. The water conservancy construction pipeline lifting device with an angle adjustment function according to claim 5, characterized in that, The opening (61) is opened on the side surface of the support plate (51), and the opening (61) is communicated with the through hole (52).

7. The water conservancy construction pipeline hoisting device with an angle adjustment function according to claim 6, characterized in that, The pressing-down structure includes a connecting frame (71), a through hole (72) and two anti-disengagement sleeve plates (73). The connecting frame (71) is fixed on the top surface of the pressing plate (64). The through hole (72) is opened on the side surface of the mounting frame (50b). One end of the connecting frame (71) away from the pressing plate (64) extends into the through hole (72), and the connecting frame (71) is slidably arranged in the through hole (72). The two anti-disengagement sleeve plates (73) are both fixedly sleeved on one end of the connecting frame (71) away from the pressing plate (64), and the two anti-disengagement sleeve plates (73) are respectively located on both sides of the mounting frame (50b). The connecting frame (71) is connected to the ejector rod (50a) by a tension spring (74).

8. The water conservancy construction pipeline hoisting device with an angle adjustment function according to claim 7, characterized in that, The positioning structure includes an outer cylinder (81), an inner rod (82), a connecting rod (84), a movable rack (85) and a fixed rack (86). The outer cylinder (81) is fixed at one end of the connecting frame (71) away from the pressing plate (64). The inner rod (82) is slidably arranged in the outer cylinder (81). The outer cylinder (81) and the inner rod (82) are connected by a second spring (83). One end of the connecting rod (84) is fixedly connected to the inner rod (82). The other end of the connecting rod (84) is fixedly connected to the movable rack (85). The fixed rack (86) is fixed on the side surface of the mounting frame (50b), and the fixed rack (86) is arranged opposite to the movable rack (85).

9. The water conservancy construction pipeline hoisting device with an angle adjustment function according to claim 8, characterized in that, A grip is installed at one end of the inner rod (82) located outside the outer cylinder (81).

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