Water conservancy and hydropower hoisting mechanism with gravity self-locking structure

Abstract

The invention discloses a water conservancy and hydropower hoisting mechanism with a gravity self-locking structure, and belongs to the technical field of water conservancy and hydropower hoisting. The water conservancy and hydropower hoisting mechanism comprises a supporting steel sleeve and supporting beams arranged on the two sides of the supporting steel sleeve, the supporting steel sleeve is arranged on the outer sides of the supporting beams in a nested mode, and the supporting steel sleeve and the supporting beams are connected through a sliding groove and sliding block structure; the inner side of the end, arranged outside the supporting steel sleeve, of the supporting beam movably extends into the end, provided with the bearing beam, the bearing beam is connected with a lifting hook through a self-locking mechanism, limiting pipes are symmetrically arranged on the upper surface of the supporting steel sleeve, one end of a limiting rod extends into the upper end of each limiting pipe, and the other end of each limiting rod is fixedly connected with a mounting table. According to the lifting structure, the lifted pipe can be automatically adjusted to be horizontal, the lifting length can be rapidly adjusted according to the length of the pipe, the lifting efficiency can be improved, and in addition, the lifting structure is low in maintenance cost and beneficial to long-term stable use.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy and hydropower hoisting, and particularly to a water conservancy and hydropower hoisting mechanism provided with a gravity self-locking structure. Background Technique

[0002] In water conservancy and hydropower construction, pipes are essential building materials. To facilitate construction, the pipes need to be transported to the usage location by hoisting to reduce the difficulty and cost of manual handling. When hoisting pipes, the pipes can be lifted by hooking the two ends of the pipes with hooks. Although the process of hoisting the pipes is relatively simple, there are often some technical problems after hoisting. For example: The existing pipes cannot ensure that their centers of gravity are at their central positions, which will cause the pipes to be unable to remain horizontal during hoisting and transportation, and further cause safety problems of the pipes falling during hoisting and transportation. To solve this problem, in the prior art, a level meter or a horizontal induction instrument is used to measure whether the pipes are horizontal during hoisting, and the hoisting position is adjusted through a structure composed of manual labor or a motor and a screw. For example, a water conservancy and hydropower hoisting device disclosed in the publication number CN215711040U measures the level through a level meter and adjusts the hoisting position manually to ensure the horizontality of the pipes during hoisting and transportation. Although the above prior art can also ensure the horizontality of the pipes during hoisting and transportation, its operation process is relatively cumbersome, thus greatly reducing the hoisting efficiency. In addition, since the environment at the hoisting site is generally relatively harsh, such as more dust and sand, in this case, the balance measurement instrument and the adjustment structure composed of the motor and the screw are extremely prone to failure, which is not conducive to long-term use, and the cost of maintaining electronic devices such as the balance measurement instrument is relatively high. In addition, the existing water conservancy and hydropower hoisting mechanism is not convenient for quickly adjusting the hoisting length when hoisting pipes, which is not conducive to quickly hoisting pipes of different lengths, and further reduces the hoisting efficiency. Therefore, a water conservancy and hydropower hoisting mechanism provided with a gravity self-locking structure is needed to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a water conservancy and hydropower hoisting mechanism provided with a gravity self-locking structure to solve the problems in the above background technique that the existing water conservancy and hydropower hoisting mechanism cannot quickly adjust the pipes to be horizontal, is not convenient for quickly adjusting the hoisting length, is not conducive to quickly hoisting pipes of different lengths, and is not convenient for long-term stable use.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure, including a support steel sleeve and support beams arranged on both sides thereof. The support steel sleeve is nested outside the support beam, and the two are connected by a chute-slider structure. One end of a bearing beam extends movably into the inner side of the end of the support beam outside the support steel sleeve. The bearing beam is connected to a hook through a self-locking mechanism. Symmetrically arranged on the upper surface of the support steel sleeve are limiting tubes, and one end of a limiting rod extends into the upper end of the limiting tube. The other end of the limiting rod is fixedly connected to a mounting platform. Between the lower surface of the mounting platform and the upper surface of the support beam are provided two supporting rods, and the upper ends of the two supporting rods are symmetrically connected to the lower surface of the mounting platform, and the lower ends of the two supporting rods are respectively pivotally connected to the corresponding upper surface of the support beam. The mounting platform is connected to a connecting frame through a hoisting position adjusting mechanism, and a hoisting rope is connected to the connecting frame.

[0005] Preferably, the two supporting rods are distributed in a V-shape, and the lower surface of the mounting platform is arranged parallel to the upper surface of the support beam.

[0006] Preferably, the self-locking mechanism includes a mounting cavity provided on the bearing beam, and the mounting cavity penetrates to the lower surface of the bearing beam. A guide rope shaft is installed in the mounting cavity, and a steel wire rope is laid on the guide rope shaft. One end of the steel wire rope extends below the bearing beam and is connected to the hook, and the other end of the steel wire rope is connected to a square limiting block. At one end in the mounting cavity is provided a square limiting groove, and the limiting groove matches the shape of the limiting block. The inner end of the limiting block extends movably into the limiting groove, and a first spring is arranged between the inner end of the limiting block and the inner side of the limiting groove.

[0007] Preferably, the self-locking mechanism further includes three guiding plates fixedly connected to the outer end of the limiting block, and each guiding plate is provided with an inclined groove penetrating through both sides thereof. The middle part of a U-shaped rod movably penetrates through each inclined groove. Locking plates movably penetrate through the upper surface, front side and rear side of the bearing beam, and the outer end of the locking plate is a square rough surface. The inner end of the locking plate is a columnar structure for movably penetrating through the bearing beam, and the inner end of the locking plate is connected to the corresponding U-shaped rod, and the two are coaxially arranged.

[0008] Preferably, the three guiding plates are respectively perpendicular to the outer end of the corresponding locking plate.

[0009] Preferably, the lifting position adjusting mechanism includes a connecting plate that slidably penetrates through the upper end of the connecting frame, and the lower surfaces of both ends of the connecting plate are pivotally connected to the upper ends of the corresponding piston rods. Both ends of the upper surface of the mounting table are provided with piston tubes, and the lower ends of the piston tubes are pivotally connected to the mounting table. The lower end of the piston rod is slidably and seamlessly connected to the inner side of the upper end opening of the piston tube. The lower end of the connecting frame is pivotally connected to a support block, and a lead screw penetrates through the support block in a threaded manner. The upper ends of the corresponding limit shafts are pivotally connected to both the front and rear sides of the support block, and the lower ends of the limit shafts are movably inserted into the upper ends of the corresponding limit sleeves. The lower ends of the limit sleeves are pivotally connected to the upper surface of the mounting table. Support wheel assemblies connected to the mounting table are also provided on both the front and rear sides of the support block.

[0010] Preferably, a piston hole is formed on the lower surface of the piston rod, and the inner top end of the piston hole communicates with the outside of the piston rod through through holes distributed at equal angles. A single-headed plug rod is fixedly connected to the inner bottom end of the piston tube, and the upper end of the single-headed plug rod is a spherical structure covered with a rubber sleeve. The spherical structure covered with the rubber sleeve corresponds to the inner diameter and position of the piston hole one by one.

[0011] Preferably, the support wheel assembly includes an axle frame, a roller, and a track. The track is provided on both the front and rear sides of the mounting table. The roller is rotatably connected to the corresponding track, the roller is connected to the lower end of the axle frame through a bearing, and the upper end of the axle frame is fixedly connected to the support block.

[0012] Preferably, the lifting position adjusting mechanism further includes self-resetting shaft rods provided on both sides inside the upper end of the mounting table. The self-resetting shaft rods are also connected to the inner sides of the upper end of the mounting table through torsion springs to realize the self-resetting function of the self-resetting shaft rods. Both of the self-resetting shaft rods are respectively connected to both ends of the lead screw through one-way bearings, and a rope winding shaft is key-connected to the outer side of the self-resetting shaft rod. The upper end of a pulling rope is wound around the rope winding shaft. Two convex piston chambers are formed on the inner surface of the upper end of the mounting table, and a corresponding piston disk is slidably and seamlessly connected to each piston chamber. The middle parts of the upper surfaces of the two piston disks are respectively fixedly connected to the lower ends of the corresponding pulling ropes, and a spring three is provided between the upper surface of each piston disk and the inner top end of the corresponding piston chamber.

[0013] Preferably, the lifting position adjusting mechanism further includes an oil collecting cylinder installed on the lower surface of the mounting table. An oil injection hole that is always open is provided on the oil collecting cylinder. Two liquid flow channels that penetrate through to the oil collecting cylinder are provided at both ends of the mounting table. One of the two liquid flow channels at each end of the mounting table penetrates through the corresponding piston chamber. The two liquid flow channels at each end of the mounting table are respectively connected to the corresponding piston pipes through a one-way liquid suction pipe and a one-way liquid discharge pipe. And the liquid flow channel connected by the one-way liquid discharge pipe penetrates through the corresponding piston chamber. A double-headed plug rod is arranged at the inner bottom end of the piston chamber. A partition plate coaxial with it is arranged in the middle of the double-headed plug rod. Springs II sleeved on the outer side of the double-headed plug rod are arranged at both ends of the partition plate. One end of the double-headed plug rod is also a spherical structure sleeved with a rubber sleeve, and its diameter matches the inner diameter of the liquid flow channel. The other end of the double-headed plug rod is frustum-shaped and sleeved with a rubber sleeve. In the natural state, the frustum shape does not block the liquid flow channel, and the spherical structure on the double-headed plug rod blocks the liquid flow channel. An extension pipe is arranged on the liquid flow channel connected by the one-way liquid suction pipe and extends below the liquid level in the oil collecting cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The water conservancy and hydropower hoisting mechanism provided with a gravity self-locking structure can not only automatically adjust the hoisted pipe to be horizontal, but also quickly adjust the hoisting length according to the length of the pipe, which helps to improve the hoisting efficiency. In addition, the maintenance cost of this hoisting structure is relatively low, which helps for long-term and stable use: 1. During the hoisting process of the pipe, since the center of gravity of the pipe is not on the same vertical line as the hoisting position, the pipe will tilt. When the pipe tilts, it will drive the mounting table to tilt together. Since the hoisting rope always pulls the connecting frame, the connecting frame will always be in a vertical state. In addition, because the connecting frame and the connecting plate are slidably connected, the connecting plate will always remain horizontal. This results in a certain angle between the connecting plate and the mounting table. At this time, the piston rod and the piston pipe at the end where the connecting plate and the mounting table are close to each other will be squeezed, and the oil in the piston pipe will be squeezed into the piston chamber. At this time, due to the action of the double-headed plug rod arranged in the piston chamber, the pressure in the piston chamber will increase, causing the piston disc to move upward and the spring III on its upper surface to be squeezed. After the piston rod and the piston pipe are no longer squeezed, under the action of the spring II on the double-headed plug rod, the oil in the piston chamber will flow into the oil collecting cylinder, so that the spring III will reset, drive the piston disc to reset, pull the pulling rope, and cause the self-resetting shaft rod to drive the screw rod to rotate through the one-way bearing. At this time, the position of the support block will be adjusted, so as to change the position of the connecting frame, which helps to adjust the mounting table to be approximately parallel to the connecting plate, and can greatly reduce the safety hazards caused by the tilt of the pipe during the hoisting process; 2. When hoisting pipes of different lengths, the appropriate-length load-bearing beam can be directly drawn out from the support beam. Then, during the hoisting process, due to the gravity of the pipe, relative movement will occur between the U-shaped rod and the inclined groove. At this time, the locking plate will move outward, and then the locking plate will squeeze the inner side of the support beam. Through the friction between the two, the two can be limited in position, avoiding relative displacement between the two during the hoisting process, and thus ensuring the stability of the hoisting process. Since the load-bearing beam and the support beam can move relatively freely when not hoisting pipes, it helps the staff quickly adjust the hoisting length, helps quickly hoist pipes of different lengths, and is conducive to further improving the hoisting efficiency. 3. This hoisting mechanism does not require the use of electronic equipment, thus avoiding the situation of electronic equipment damage in a relatively harsh hoisting environment, which helps for long-term use. In addition, during its maintenance, only simple maintenance such as replacing the oil and lubricating the parts connected to the corresponding shafts is required, so the maintenance cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view structural schematic diagram of the present invention; Figure 2 is the bottom view structural schematic diagram of the present invention; Figure 3 is the cross-sectional view structural schematic diagram of the load-bearing beam of the present invention; Figure 4 of the present invention Figure 3 is the enlarged structural schematic diagram of point A in the present invention; Figure 5 is the cross-sectional view structural schematic diagram of the present invention; Figure 6 of the present invention Figure 5 is the enlarged structural schematic diagram of point B in the present invention; Figure 7 is the partial cross-sectional view structural schematic diagram of the present invention; Figure 8 of the present invention Figure 7 is the enlarged structural schematic diagram of point C in the present invention; Figure 9 is the partial cross-sectional view structural schematic diagram of the installation platform of the present invention; Figure 10 of the present invention Figure 9 is the enlarged structural schematic diagram of point D in the present invention; Figure 11 is the cross-sectional view connection structural schematic diagram of the liquid flow channel of the present invention; Figure 12 of the present invention Figure 11 is the enlarged structural schematic diagram of point E in the present invention.

[0016] In the figure: 1, support steel sleeve; 2, support beam; 3, bearing beam; 4, hook; 5, support rod; 6, installation platform; 7, limit tube; 8, connecting plate; 9, oil collecting cylinder; 10, connecting frame; 11, support block; 12, locking plate; 13, steel wire rope; 14, limit rod; 15, installation cavity; 16, guide rope shaft; 17, limit groove; 18, limit block; 19, first spring; 20, guiding plate; 21, inclined groove; 22, U-shaped rod; 23, piston rod; 24, piston tube; 25, lead screw; 26, support wheel assembly; 27, piston hole; 28, through hole; 29, limit shaft; 30, limit sleeve; 31, double-headed plug rod; 32, second spring; 33, single-headed plug rod; 34, one-way liquid suction pipe; 35, one-way liquid discharge pipe; 36, liquid flow channel; 37, self-resetting shaft rod; 38, rope winding shaft; 39, pulling rope; 40, piston cavity; 41, piston disc; 42, third spring; 43, partition plate; 44, chute-slider structure. Detailed implementation manners

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1 - 12 , the present invention provides the following technical solutions: Embodiment 1: To solve the problem that the conventional water conservancy and hydropower hoisting mechanism cannot quickly adjust the hoisting length, which is not conducive to improving the efficiency when hoisting pipes of different lengths, the following technical solutions are provided. Specifically, a water conservancy and hydropower hoisting mechanism with a gravity self-locking structure includes a support steel sleeve 1 and support beams 2 provided on both sides thereof. The support steel sleeve 1 is nested outside the support beam 2, and the two are connected by a chute-slider structure 44. One end of a bearing beam 3 extends into the inner side of the end of the support beam 2 outside the support steel sleeve 1, and the bearing beam 3 is connected to a hook 4 through a self-locking mechanism.

[0019] Two support rods 5 are distributed in a V shape, and the lower surface of the installation platform 6 is parallel to the upper surface of the support beam 2.

[0020] The self-locking mechanism includes an installation cavity 15 provided on the bearing beam 3, and the installation cavity 15 penetrates to the lower surface of the bearing beam 3. A wire guiding shaft 16 is installed in the installation cavity 15, and a steel wire rope 13 is laid on the wire guiding shaft 16. One end of the steel wire rope 13 extends below the bearing beam 3 and is connected to the hook 4, and the other end of the steel wire rope 13 is connected with a square limiting block 18. One end in the installation cavity 15 is provided with a square limiting groove 17, and the limiting groove 17 matches the shape of the limiting block 18. The inner end of the limiting block 18 movably extends into the limiting groove 17, and a first spring 19 is arranged between the inner end of the limiting block 18 and the inner side of the limiting groove 17. The self-locking mechanism further includes three guiding plates 20 fixedly connected to the outer end of the limiting block 18, and an inclined groove 21 penetrating through both sides is arranged on each guiding plate 20. The middle part of a U-shaped rod 22 movably penetrates through each inclined groove 21. The upper surface and the front and rear sides of the bearing beam 3 are provided with locking plates 12 movably penetrating through it, and the outer end of the locking plate 12 is a square rough surface, and the inner end of the locking plate 12 is a columnar structure for movably penetrating through the bearing beam 3, and the inner end of the locking plate 12 is connected to the corresponding U-shaped rod 22, and the two are coaxially arranged. During use, the two hooks 4 are respectively used to hook the two ends of the pipe, and then the lifting starts. During the lifting process, the installation platform 6 first moves upward, driving the two supporting rods 5, and then making the two supporting beams 2 approach each other, reducing the possibility that the hook 4 fails to stably hook the end of the pipe, thus helping to improve the stability of the lifting. After the pipe is suspended in the air, its gravity will cause the steel wire rope 13 to pull the limiting block 18, and then the guiding plate 20 will move relative to the locking plate 12. At this time, the U-shaped rod 22 will move in the inclined groove 21, and then it will cause the locking plate 12 to move outward, squeezing the inner side of the supporting beam 2, thereby increasing the friction force between the two, avoiding relative movement between the supporting beam 2 and the bearing beam 3 after the pipe is suspended in the air, and thus helping to ensure the stability of the lifting process. In addition, since the supporting beam 2 and the bearing beam 3 can move relative to each other easily when the pipe is not being lifted, the staff can quickly adjust the lifting length to cope with the lifting of pipes of different lengths.

[0021] The three guiding plates 20 are respectively arranged perpendicular to the outer end of the corresponding locking plate 12.

[0022] Embodiment 2: To solve the problem that the previous water conservancy and hydropower hoisting mechanism is not convenient to automatically adjust the hoisted pipe to be horizontal, which is not conducive to further improving the efficiency of hoisting pipes, the following technical solutions are provided. Specifically, limit tubes 7 are symmetrically arranged on the upper surface of the support steel sleeve 1, and one end of a limit rod 14 extends into the upper end of the limit tube 7. The other end of the limit rod 14 is fixedly connected to a mounting table 6. Between the lower surface of the mounting table 6 and the upper surface of the support beam 2, two support rods 5 are arranged. The upper ends of the two support rods 5 are symmetrically connected to the lower surface of the mounting table 6, and the lower ends of the two support rods 5 are respectively pivotally connected to the upper surfaces of the corresponding support beams 2. The mounting table 6 is connected to a connecting frame 10 through a hoisting position adjusting mechanism, and a hoisting rope is connected to the connecting frame 10.

[0023] The hoisting position adjusting mechanism includes a connecting plate 8 that slidably penetrates through the upper end of the connecting frame 10. The lower surfaces of both ends of the connecting plate 8 are respectively pivotally connected to the upper ends of the corresponding piston rods 23. At both ends of the upper surface of the mounting table 6, piston tubes 24 are arranged, and the lower ends of the piston tubes 24 are pivotally connected to the mounting table 6. The lower end of the piston rod 23 is slidably and seamlessly connected to the inner side of the upper end opening of the piston tube 24. The lower end of the connecting frame 10 is pivotally connected to a support block 11, and a lead screw 25 is threaded through the support block 11. The upper ends of the corresponding limit shafts 29 are pivotally connected to both the front and rear sides of the support block 11, and the lower ends of the limit shafts 29 are movably extended into the upper ends of the corresponding limit sleeves 30. The lower ends of the limit sleeves 30 are pivotally connected to the upper surface of the mounting table 6. Support wheel assemblies 26 connected to the mounting table 6 are also arranged on both the front and rear sides of the support block 11. During use, since the center and the center of gravity of the pipe do not necessarily coincide, after hoisting, the pipe will tilt, causing the mounting table 6 to tilt along with it. During this process, since the hoisting rope always pulls the connecting frame 10, the connecting frame 10 can be kept in a vertical state, and further, the connecting plate 8 connected to it can be kept horizontal. At this time, an angle will be formed between the connecting plate 8 and the mounting table 6, resulting in the mutual extrusion of the piston rod 23 and the piston tube 24 between the mutually approaching ends of the connecting plate 8 and the mounting table 6.

[0024] A piston hole 27 is formed in the lower end surface of the piston rod 23, and the inner top end of the piston hole 27 communicates with the outside of the piston rod 23 through through holes 28 distributed at equal angles. A single-headed plug rod 33 is fixedly connected to the inner bottom end of the piston tube 24, and the upper end of the single-headed plug rod 33 is a spherical structure sleeved with a rubber sleeve. The spherical structure sleeved with the rubber sleeve corresponds to the inner diameter and position of the piston hole 27 one by one. When the piston rod 23 and the piston tube 24 between the mutually remote ends of the connecting plate 8 and the mounting table 6 are pulled, since the piston hole 27 and the single-headed plug rod 33 are not connected, the piston rod 23 will move in the oil in the piston tube 24 without squeezing the oil in the piston tube 24. When the piston rod 23 and the piston tube 24 between the mutually approaching ends of the connecting plate 8 and the mounting table 6 are squeezed, the single-headed plug rod 33 extends into the piston hole 27, thereby squeezing the oil below the piston rod 23 in the piston tube 24 (there is a small gap between the upper middle part of the piston rod 23 and the upper end opening of the corresponding piston tube 24 for communicating with the outside). The support wheel assembly 26 includes an axle bracket, a roller and a track. The track is provided on both the front and rear sides of the mounting table 6. The roller is rotatably connected in the corresponding track, the roller is connected to the lower end of the axle bracket by a bearing, and the upper end of the axle bracket is fixedly connected to the support block 11, which is convenient for reducing the force borne by the lead screw 25 and helps the lead screw 25 to rotate more easily.

[0025] The lifting position adjusting mechanism further includes self-resetting shaft rods 37 provided on both sides inside the upper end of the mounting table 6. The self-resetting shaft rods 37 are also connected to the inner side surface of the upper end of the mounting table 6 through torsion springs for realizing the self-resetting function of the self-resetting shaft rods 37. Both self-resetting shaft rods 37 are respectively connected to both ends of the lead screw 25 through one-way bearings, and a rope winding shaft 38 is key-connected to the outer side of the self-resetting shaft rod 37. The upper end of a pulling rope 39 is wound around the rope winding shaft 38. Convex piston chambers 40 are formed on the surface inside the upper end of the mounting table 6, and corresponding piston disks 41 are slidably connected in each piston chamber 40 without gaps. The middle parts of the upper surfaces of the two piston disks 41 are respectively fixedly connected to the lower ends of the corresponding pulling ropes 39, and a third spring 42 is provided between the upper surface of each piston disk 41 and the inner top end of the corresponding piston chamber 40. In the natural state, the self-resetting shaft rod 37 has a tendency of automatic reset rotation, which enables the self-resetting shaft rod 37 to rotate when the lower end of the pulling rope 39 moves upward with the piston disk 41, so that the lead screw 25 can be driven to rotate through the one-way bearing. When the piston disk 41 moves downward under the reset action of the third spring 42, the pulling rope 39 will be pulled to make the self-resetting shaft rod 37 store energy again.

[0026] The hoisting position adjusting mechanism further includes an oil collecting cylinder 9 installed on the lower surface of the mounting table 6. The oil collecting cylinder 9 is provided with an oil injection hole that is always open. Two liquid flow channels 36 that penetrate through to the oil collecting cylinder 9 are provided at both ends of the mounting table 6. One of the two liquid flow channels 36 at each end of the mounting table 6 penetrates through the corresponding piston chamber 40. The two liquid flow channels 36 at each end of the mounting table 6 are respectively connected to the corresponding piston tube 24 through a one-way liquid suction pipe 34 and a one-way liquid discharge pipe 35 in a penetrating manner. And the liquid flow channel 36 connected to the one-way liquid discharge pipe 35 penetrates through the corresponding piston chamber 40. A double-headed plug rod 31 is provided at the inner bottom end of the piston chamber 40. And a partition plate 43 coaxial with it is provided in the middle of the double-headed plug rod 31. Springs two 32 sleeved on the outside of the double-headed plug rod 31 are provided at both ends of the partition plate 43. One end of the double-headed plug rod 31 is also a spherical structure with a rubber sleeve, and its diameter matches the inner diameter of the liquid flow channel 36. The other end of the double-headed plug rod 31 is frustum-shaped with a rubber sleeve. And in the natural state, the frustum shape does not block the liquid flow channel 36, and the spherical structure on the double-headed plug rod 31 blocks the liquid flow channel 36. An extension pipe is provided on the liquid flow channel 36 connected to the one-way liquid suction pipe 34, which extends below the liquid level in the oil collecting cylinder 9. During use, since the piston rod 23 and the piston tube 24 between the connecting plate 8 and the mutually close end of the mounting table 6 are mutually extruded, the oil liquid below the piston rod 23 in the piston tube 24 will be extruded into the piston chamber 40 through the one-way liquid discharge pipe 35. During this process, the spherical structure on the double-headed plug rod 31 no longer blocks the liquid flow channel 36, while the frustum-shaped structure will block the liquid flow channel 36, so that the pressure in the piston chamber 40 increases, and then the piston disc 41 moves upward, and the spring three 42 is extruded. During this process, the self-resetting shaft rod 37 rotates and moves by an angle due to its own tendency to rotate. After the oil liquid no longer enters the piston chamber 40, the double-headed plug rod 31 resets due to the action of the spring two 32. At this time, the oil liquid in the piston chamber 40 can flow into the oil collecting cylinder 9 through the liquid flow channel 36, so that the pressure in the piston chamber 40 decreases. Through the resetting action of the spring three 42, the self-resetting shaft rod 37 can rotate back. At this time, the lead screw 25 can be driven to rotate through the one-way bearing, and then the support block 11 can be driven to move, and the connecting frame 10 can be driven to move synchronously to facilitate the adjustment of the hoisting position (due to the influence of the weight of the oil liquid, the mounting table 6 can only be adjusted to be approximately parallel to the connecting plate 8, but it will also reduce the safety hazards during the hoisting process). During the above process, the positions of the piston rod 23 and the piston tube 24 are gradually reset, and the oil liquid in the oil collecting cylinder 9 can be sucked through the one-way liquid suction pipe 34 to supplement the oil liquid flowing out of the piston tube 24.

[0027] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure, comprising a support steel sleeve (1) and support beams (2) arranged on both sides thereof, characterized in that: The described supporting steel sleeve (1) is nested outside the supporting beam (2), and the two are connected by a chute-slider structure (44). One end of the bearing beam (3) movably extends into the inner side of the end of the supporting beam (2) outside the supporting steel sleeve (1). The bearing beam (3) is connected to the hook (4) through a self-locking mechanism. Limiting tubes (7) are symmetrically arranged on the upper surface of the supporting steel sleeve (1), and one end of a limiting rod (14) extends into the upper end of the limiting tube (7). The other end of the limiting rod (14) is fixedly connected to a mounting table (6). Two supporting rods (5) are arranged between the lower surface of the mounting table (6) and the upper surface of the supporting beam (2). The upper ends of the two supporting rods (5) are symmetrically connected to the lower surface of the mounting table (6), and the lower ends of the two supporting rods (5) are respectively pivotally connected to the upper surface of the corresponding supporting beam (2). The mounting table (6) is connected to a connecting frame (10) through a hoisting position adjusting mechanism, and a hoisting rope is connected to the connecting frame (10).

2. The water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 1, characterized in that: The two supporting rods (5) are distributed in a V-shape, and the lower surface of the mounting table (6) is arranged parallel to the upper surface of the supporting beam (2).

3. The water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 2, wherein: The self-locking mechanism includes a mounting cavity (15) arranged on the bearing beam (3), and the mounting cavity (15) penetrates through to the lower surface of the bearing beam (3). A guide rope shaft (16) is installed in the mounting cavity (15), and a steel wire rope (13) is laid on the guide rope shaft (16). One end of the steel wire rope (13) extends out below the bearing beam (3) and is connected to the hook (4), and the other end of the steel wire rope (13) is connected to a square limiting block (18). A square limiting groove (17) is arranged at one end in the mounting cavity (15), and the limiting groove (17) matches the shape of the limiting block (18). The inner end of the limiting block (18) movably extends into the limiting groove (17), and a first spring (19) is arranged between the inner end of the limiting block (18) and the inner side of the limiting groove (17).

4. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 3, characterized in that: The self-locking mechanism further includes three guiding plates (20) fixedly connected to the outer end of the limiting block (18), and an inclined groove (21) penetrating through both sides is arranged on each guiding plate (20). The middle part of a U-shaped rod (22) movably penetrates through each inclined groove (21). Locking plates (12) movably penetrate through the upper surface and the front and rear sides of the bearing beam (3), and the outer end of the locking plate (12) is a square rough surface. The inner end of the locking plate (12) is a columnar structure for movably penetrating through the bearing beam (3), and the inner end of the locking plate (12) is connected to the corresponding U-shaped rod (22), and the two are coaxially arranged.

5. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 4, characterized in that: The three guiding plates (20) are respectively perpendicular to the outer ends of the corresponding locking plates (12).

6. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 5, characterized in that: The lifting position adjusting mechanism includes a connecting plate (8) that slidably penetrates through the upper end of the connecting frame (10), and the lower surfaces of both ends of the connecting plate (8) are rotatably connected to the upper ends of the corresponding piston rods (23). Both ends of the upper surface of the mounting table (6) are provided with piston tubes (24), and the lower ends of the piston tubes (24) are rotatably connected to the mounting table (6). The lower end of the piston rod (23) is slidably and seamlessly connected to the inner side of the upper opening of the piston tube (24). The lower end of the connecting frame (10) is rotatably connected to a support block (11), and a lead screw (25) is threadedly penetrated through the support block (11). The upper ends of the corresponding limit shafts (29) are rotatably connected to both the front and rear sides of the support block (11), and the lower ends of the limit shafts (29) are movably inserted into the upper ends of the corresponding limit sleeves (30). The lower ends of the limit sleeves (30) are rotatably connected to the upper surface of the mounting table (6). Support wheel assemblies (26) connected to the mounting table (6) are further provided on both the front and rear sides of the support block (11).

7. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 6, characterized in that: A piston hole (27) is formed on the lower surface of the piston rod (23), and the inner top end of the piston hole (27) communicates with the outside of the piston rod (23) through through holes (28) distributed at equal angles. A single-headed plug rod (33) is fixedly connected to the inner bottom end of the piston tube (24), and the upper end of the single-headed plug rod (33) is a spherical structure covered with a rubber sleeve. The spherical structure covered with the rubber sleeve corresponds to the inner diameter and position of the piston hole (27) one by one.

8. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 7, characterized in that: The support wheel assembly (26) includes an axle frame, a roller, and a track. The tracks are provided on both the front and rear sides of the mounting table (6). The roller is rotatably connected in the corresponding track. The roller is rotatably connected to the lower end of the axle frame, and the upper end of the axle frame is fixedly connected to the support block (11).

9. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 8, characterized in that: The lifting position adjusting mechanism further includes self-resetting shaft rods (37) provided on both sides inside the upper end of the mounting table (6). The self-resetting shaft rods (37) are also connected to the inner side surface of the upper end of the mounting table (6) through torsion springs to realize the self-resetting function of the self-resetting shaft rods (37). Both of the self-resetting shaft rods (37) are respectively connected to both ends of the lead screw (25) through one-way bearings, and a rope winding shaft (38) is key-connected to the outer side of the self-resetting shaft rod (37). The upper end of a pulling rope (39) is wound around the rope winding shaft (38). Convex piston chambers (40) are formed on the inner surface of the upper end of the mounting table (6), and a corresponding piston disk (41) is slidably and seamlessly connected in each piston chamber (40). The lower ends of the corresponding pulling ropes (39) are respectively fixedly connected to the middle parts of the upper surfaces of the two piston disks (41), and a third spring (42) is provided between the upper surface of each piston disk (41) and the inner top end of the corresponding piston chamber (40).

10. A water conservancy and hydropower hoisting mechanism with a gravity self-locking structure according to claim 9, characterized in that: The lifting position adjusting mechanism further includes an oil collecting cylinder (9) installed on the lower surface of the installation table (6). An oil injection hole that is always open is provided on the oil collecting cylinder (9). Two liquid flow channels (36) that penetrate through to the oil collecting cylinder (9) are provided at both ends of the installation table (6). One of the two liquid flow channels (36) at each end of the installation table (6) penetrates through the corresponding piston chamber (40). The two liquid flow channels (36) at each end of the installation table (6) are respectively connected in a through manner to the corresponding piston pipes (24) through a one-way liquid suction pipe (34) and a one-way liquid discharge pipe (35). And the liquid flow channel (36) connected by the one-way liquid discharge pipe (35) penetrates through the corresponding piston chamber (40). A double-headed plug rod (31) is provided at the inner bottom end of the piston chamber (40). A partition plate (43) coaxial with it is provided in the middle of the double-headed plug rod (31). Spring two (32) sleeved on the outer side of the double-headed plug rod (31) is provided at both ends of the partition plate (43). One end of the double-headed plug rod (31) is also a spherical structure with a rubber sleeve, and its diameter matches the inner diameter of the liquid flow channel (36). The other end of the double-headed plug rod (31) is frustum-shaped with a rubber sleeve. And in the natural state, the frustum shape does not block the liquid flow channel (36), and the spherical structure on the double-headed plug rod (31) blocks the liquid flow channel (36). An extension pipe is provided on the liquid flow channel (36) connected by the one-way liquid suction pipe (34), and it extends below the liquid level in the oil collecting cylinder (9).

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