Telescopic rod for overhaul and drainage of hydraulic power plant

Abstract

The telescopic rod comprises a telescopic rod body, a supporting connecting cylinder is vertically arranged at the front end of the telescopic rod body, a sliding cylinder is arranged in the supporting connecting cylinder in a sleeved mode, and a fixed pulley is arranged in the sliding cylinder; a floater connecting line is wound on the fixed pulley, the tail end of the floater connecting line outside the sliding cylinder is connected with a stable heavy hammer, and a plurality of water level floaters are sequentially arranged on the floater connecting line above the stable heavy hammer; a floater connecting line in the sliding barrel is connected with a driving block, the outer wall of the sliding barrel is sleeved with a sliding ring, and one end of the driving block penetrates through the wall face of the sliding barrel to be connected with the sliding ring; a plurality of fixing rods are sequentially arranged at the lower end of the supporting connecting cylinder in the circumferential direction, the upper ends of the fixing rods are hinged to the end of the supporting connecting cylinder, and overturning components are arranged between the fixing rods and the sliding cylinder. According to the telescopic rod, the overhaul floater can be accurately put into the telescopic rod according to working requirements, meanwhile, the spatial position where the floater is located is fixed, and the situation that the floater cannot float due to blocking of a conical pipe wall after the corresponding water level is reached can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance tools for hydropower plants, and in particular to a telescopic rod for maintenance and drainage of hydropower plants. Background Art

[0002] Existing hydropower plants need to put in maintenance drainage switch floats in the spinal canal during overhaul, usually 4, and the working principle is essentially that when the water in the spinal canal reaches the corresponding water level, the float changes position, resulting in corresponding action. Since the spinal canal is conical, the float is often laid against the wall of the spinal canal, often resulting in the float being unable to float up, thus affecting the normal start and stop of the drainage pump. At the same time, there is no light in the spinal canal, and it is impossible to check whether the float is laid at the normal distance.

[0003] In view of this, this application is hereby filed. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the float is often laid against the wall of the vertebral canal, which often results in the float being unable to float up. At the same time, there is no light in the vertebral canal, and it is impossible to check whether the float is laid at a normal distance. The purpose is to provide a telescopic rod for maintenance and drainage of a hydropower plant, which can accurately lower the maintenance float according to work needs and fix the spatial position of the float, thereby avoiding the situation where the float is unable to float up due to the obstruction of the vertebral canal wall after reaching the corresponding water level.

[0005] The present invention is achieved through the following technical solutions:

[0006] A telescopic rod for maintenance and drainage of a hydropower plant, comprising a telescopic rod body, a support connecting cylinder is vertically arranged at the front end of the telescopic rod body, a sliding cylinder is sleeved inside the support connecting cylinder, and a fixed pulley is arranged inside the sliding cylinder;

[0007] A float connecting line is wound around the fixed pulley, a stabilizing weight is connected to the end of the float connecting line outside the slide cylinder, and a plurality of water level floats are sequentially arranged on the float connecting line above the stabilizing weight;

[0008] The inner float connecting line of the slide is connected with a driving block, the outer wall of the slide is sleeved with a slip ring, and one end of the driving block passes through the wall of the slide and is connected with the slip ring;

[0009] The sliding ring can move up and down along the outer wall of the sliding cylinder;

[0010] A plurality of fixing rods are sequentially arranged at the lower end of the supporting connecting tube along the circumferential direction, the upper ends of the fixing rods are hinged to the ends of the supporting connecting tube, and a turning member is arranged between the fixing rods and the sliding tube;

[0011] The stabilizing weight moves downward under its own gravity, and drives the driving block to move downward synchronously through the wound float connecting line. The slip ring moves downward along the slide cylinder, and under the action of the flip component, drives the lower ends of all the fixed rods to simultaneously unfold outward to form an umbrella-like structure.

[0012] The telescopic rod of the present invention can accurately drop the inspection float according to work needs, and fix the spatial position of the float, thereby preventing the float from being unable to float due to obstruction of the vertebral canal wall after reaching the corresponding water level.

[0013] When the telescopic rod of the present invention is in use, first the front end of the telescopic rod body is placed at an appropriate height directly above the vertebral canal. At this time, the weight and the water level float are suspended at the center line of the vertebral canal, the fixed limit of the weight is released, and the weight moves downward under the action of its own gravity. At this time, the float connecting line is continuously unwound from the fixed pulley, and at the same time, the driving block moves downward driven by the float connecting line. Therefore, the driving block pulls the slip ring to move downward along the slide tube. During the downward movement of the slip ring, the flip structure is stretched outward, so that the lower ends of all the fixed rods are simultaneously expanded outward and contact the inner wall of the vertebral canal. At this time, the weight falls to the bottom of the vertebral canal, completing the investment of the water level float.

[0014] Under the support of multiple fixed rods, the present invention can ensure that the float connection line and the weight are always located at the axis of the spinal canal, and improve the water level. The floats are connected together through the float connection line and limited by the weight, so that the water level floats can float normally during the rising water level and avoid moving in the water. The present invention uses the gravity during the throwing process of the weight to convert the downward movement into the flipping movement of the fixed rod through the driving block, the slip ring and the flip component, and the deployment of the fixed structure can be achieved without an additional power source. After the spinal canal inspection is completed, the fixed rod and the weight can be gradually retracted by rotating the fixed pulley to retract the float connection line.

[0015] The telescopic rod body is a telescopic structure that can extend or shorten its length, and its structure can adopt an existing conventional telescopic rod structure, so it will not be elaborated in detail here.

[0016] In a specific embodiment, the flipping member includes a transmission rod hinged on the side wall of the fixed rod, the other end of the transmission rod is connected to the driving block through a hinged rod, and the end of the hinged rod is rotatably connected to the transmission rod and the driving block. The transmission rod and the hinged rod of the present invention form an L-shaped flipping member, when the driving block moves downward, the upper end of the hinged rod moves downward accordingly, and the hinged rod simultaneously performs downward and outward flipping movements, so that the lower end of the fixed rod is unfolded outward.

[0017] In a specific embodiment, the other end of the telescopic rod body is provided with a mounting base, which can facilitate the fixing and mounting of the overall structure of the telescopic rod. At the same time, a slewing structure can be provided on the mounting base. The slewing structure is wound with a slewing line, and the front end of the slewing line is connected to a fixed pulley to form a structure similar to a fishing rod. When the inspection is completed, the float connecting line can be manually wound around the fixed pulley by rotating the slewing structure, so that the fixed rod and the stabilizing weight can be retracted and the telescopic rod structure can be removed. Of course, a buckle structure can also be provided on the slewing structure. When the fixed rod and the weight are completely retracted, they are fixed by the buckle structure. When the telescopic rod needs to be used, the buckle structure is loosened, that is, the limiting effect on the weight is cancelled, and the weight can move downward under the action of gravity.

[0018] In a specific embodiment, the interior of the float connection line is a hollow structure hose, and the hollow structure hose is provided with LED lamp beads. The float connection line is set as a hollow structure transparent hose, and the lamp beads are set inside to provide lighting for the inside of the spinal canal, so that the setting of the float can be checked to ensure that the drainage pump can be started and stopped normally. The switch of the lamp bead can be set outside the hollow structure hose through an electric wire. For details, reference can be made to the existing installation method of lamp beads in a narrow space, which will not be elaborated in detail here.

[0019] In a specific implementation, the float connection line is provided with scale lines, which can intuitively display the distance of the float.

[0020] In a specific embodiment, the shape of the stabilizing weight is a truncated cone structure that is larger at the top and smaller at the bottom, and a circle of semi-spherical hollow elastic buffer balls is arranged along the circumferential direction at the bottom edge of the truncated cone structure. The stabilizing weight of the present invention is a truncated cone structure, which can lower the center of gravity of the stabilizing weight and increase the bottom area, and a circle of elastic buffer balls is arranged at the bottom edge of the stabilizing weight. When the stabilizing weight falls to the bottom of the cone tube, the elastic buffer balls can play a buffering role to avoid damage to the bottom of the spinal canal. In addition, the elastic buffer balls are semi-spherical and hollow, and are gradually flattened when subjected to force. In this way, the elastic buffer balls and the bottom of the spinal canal gradually expand from point contact to surface contact, which can better play a buffering effect, and the contact area gradually increases, the pressure gradually decreases, and damage to the bottom of the spinal canal is avoided.

[0021] In a specific embodiment, an electromagnetic limiting structure is provided between the other end of the driving block and the inner wall of the slide cylinder. The present invention fixes the driving block through the electromagnetic limiting structure. When the magnetic force of the electromagnetic limiting structure disappears, the driving block can move downward together with the weight to unfold the fixed rod. When the driving block is retracted upward through the rotary structure, the electromagnetic is energized to fix the driving block again to prevent the telescopic rod from being accidentally unfolded after the telescopic rod is tightened as a whole.

[0022] In a specific embodiment, an anti-skid support sheet is provided on the end of the fixing rod. The anti-skid support sheet and the fixing rod adopt a universal hinge structure. The anti-skid support sheet is made of a material with a certain elastic deformation ability, and its outer side has a suction cup-like structure.

[0023] In a specific implementation, four water level floats are provided, namely a pump start water level float, a standby pump water level float, a high water level alarm float, and a pump stop water level float.

[0024] In a specific embodiment, the lower end of the slide cylinder is connected to a limit rod, the stabilizing weight is connected to the limit rod via a movable limit rope, and the movable limit rope sleeve is arranged on the limit rod.

[0025] The present invention can ensure that the stabilizing weight can maintain verticality and central axis when falling by setting a limit rod, so as to ensure that the stabilizing weight falls accurately at the bottom of the vertebral canal, and avoid the situation that the stabilizing weight does not fall into the preset position due to the swing of the float connecting line during the falling process, thereby causing the float connecting line to be in an inclined state.

[0026] In a specific embodiment, the fixing rod and the flip component are made of lightweight aluminum, and the supporting connecting cylinder, the sliding cylinder and other structures can also be made of lightweight aluminum, which can not only ensure sufficient strength for support, but also improve the portability of transportation. The anti-slip support sheet is made of rubber material.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0028] 1. The telescopic rod for maintenance and drainage of a hydropower plant provided by the embodiment of the present invention can accurately drop the maintenance float according to the needs of the work, and at the same time fix the spatial position of the float, so as to avoid the situation where the float cannot float due to the obstruction of the vertebral canal wall after reaching the corresponding water level;

[0029] 2. A telescopic rod for maintenance and drainage of a hydropower plant provided by an embodiment of the present invention can ensure that the float connection line and the weight are always located at the axis of the vertebral tube under the support of multiple fixed rods, connect multiple water level floats together through the float connection line and limit the position through the weight, thereby ensuring that the water level float can float normally during the rising water level and avoid moving in the water;

[0030] 3. The telescopic rod for maintenance and drainage of a hydropower plant provided by the embodiment of the present invention utilizes the gravity during the throwing process of the weight hammer to convert the downward movement into the flipping movement of the fixed rod through the driving block, the slip ring and the flip component, and the deployment of the fixed structure can be achieved without an additional power source. After the spinal canal maintenance is completed, the fixed rod and the weight hammer can be gradually retracted by rotating the fixed pulley to retract the float connection line;

[0031] 4. A telescopic rod for maintenance and drainage of a hydropower plant provided by an embodiment of the present invention, wherein the transmission rod and the hinged rod constitute an L-shaped flip member, and when the driving block moves downward, the upper end of the hinged rod moves downward accordingly, and the hinged rod simultaneously performs downward and outward flipping movements, so that the lower end of the fixed rod is unfolded outward;

[0032] 5. A telescopic rod for maintenance drainage of a hydropower plant provided by an embodiment of the present invention has a float connection line set as a transparent hose with a hollow structure, and a lamp bead is set inside to provide lighting for the inside of the spinal canal, so that the setting of the float can be checked to ensure that the maintenance drainage pump can be started and stopped normally;

[0033] 6. An embodiment of the present invention provides a telescopic rod for maintenance and drainage of a hydropower plant, in which a driving block is fixed by an electromagnetic limiting structure. When the magnetic force of the electromagnetic limiting structure disappears, the driving block can move downward together under the action of the gravity of the weight to unfold the fixed rod. When the driving block is retracted upward by the rotating structure, the electromagnetic is energized to fix the driving block again to prevent accidental unfolding of the telescopic rod after the telescopic rod is tightened as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the telescopic rod structure provided by an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of the internal structure of the supporting connecting cylinder provided in an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the limit rod structure provided by an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the structure of a float connection line provided in an embodiment of the present invention;

[0039] Figure 5 A schematic diagram of the structure of a stabilizing weight provided in an embodiment of the present invention.

[0040] Reference numerals and corresponding parts names:

[0041] 1-telescopic rod body, 2-support connecting tube, 3-slide tube, 4-fixed pulley, 5-float connecting line, 6-stabilizing weight, 7-water level float, 8-driving block, 9-slip ring, 10-fixed rod, 11-transmission rod, 12-hinge rod, 13-anti-slip support plate, 14-limit rod, 15-movable limit rope, 16-installation base, 17-rotating structure, 18-rotating line, 19-vertebral tube, 20-elastic buffer ball. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0043] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those of ordinary skill in the art that these specific details do not have to be employed to practice the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures are not specifically described.

[0044] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0046] Example 1

[0047] like Figure 1-Figure 5As shown, an embodiment of the present invention provides a telescopic rod for maintenance and drainage of a hydropower plant, comprising a telescopic rod body 1, a support connecting cylinder 2 is vertically arranged at the front end of the telescopic rod body 1, a slide cylinder 3 is sleeved inside the support connecting cylinder 2, and a fixed pulley 4 is arranged inside the slide cylinder 3;

[0048] A float connecting line 5 is wound around the fixed pulley 4, a stabilizing weight 6 is connected to the end of the float connecting line 5 outside the slide cylinder 3, and a plurality of water level floats 7 are sequentially arranged on the float connecting line 5 above the stabilizing weight 6;

[0049] The float connecting line 5 inside the slide cylinder 3 is connected with a driving block 8, and a slip ring 9 is sleeved on the outer wall of the slide cylinder 3. One end of the driving block 8 passes through the wall of the slide cylinder 3 and is connected to the slip ring 9.

[0050] The slip ring 9 can move up and down along the outer wall of the slide cylinder 3;

[0051] The lower end of the supporting connecting cylinder 2 is provided with a plurality of fixing rods 10 in sequence along the circumferential direction, the upper end of the fixing rod 10 is hinged to the end of the supporting connecting cylinder 2, and a turning member is provided between the fixing rod 10 and the sliding cylinder 3;

[0052] The stabilizing weight 6 moves downward under its own gravity, and drives the driving block 8 to move downward synchronously through the wound float connecting line 5. The slip ring 9 moves downward along the slide cylinder 3, and under the action of the flip component, drives the lower ends of all the fixing rods 10 to simultaneously unfold outward to form an umbrella-like structure.

[0053] The telescopic rod of the present invention can accurately drop the inspection float according to work needs, and fix the spatial position of the float, thereby preventing the float from being unable to float due to obstruction of the vertebral canal wall after reaching the corresponding water level.

[0054] When the telescopic rod of the present invention is in use, first the front end of the telescopic rod body is placed at an appropriate height directly above the vertebral canal 19. At this time, the weight and the water level float are suspended at the center line of the vertebral canal, the fixed limit of the weight is released, and the weight moves downward under the action of its own gravity. At this time, the float connecting line is continuously unwound from the fixed pulley, and at the same time, the driving block moves downward driven by the float connecting line. Therefore, the driving block pulls the slip ring to move downward along the slide tube. During the downward movement of the slip ring, the flip structure is stretched outward, so that the lower ends of all the fixed rods are simultaneously expanded outward and contact the inner wall of the vertebral canal. At this time, the weight falls to the bottom of the vertebral canal, completing the input of the water level float.

[0055] Under the support of multiple fixed rods, the present invention can ensure that the float connection line and the weight are always located at the axis of the spinal canal, and improve the water level. The floats are connected together through the float connection line and limited by the weight, so that the water level floats can float normally during the rising water level and avoid moving in the water. The present invention uses the gravity during the throwing process of the weight to convert the downward movement into the flipping movement of the fixed rod through the driving block, the slip ring and the flip component, and the deployment of the fixed structure can be achieved without an additional power source. After the spinal canal inspection is completed, the fixed rod and the weight can be gradually retracted by rotating the fixed pulley to retract the float connection line.

[0056] In a specific embodiment, the flipping member includes a transmission rod 11 hinged on the side wall of the fixed rod 10, and the other end of the transmission rod 11 is connected to the driving block 8 through a hinge rod 12, and the end of the hinge rod 12 is rotatably connected to the transmission rod 11 and the driving block 8. The transmission rod 11 and the hinge rod 12 of the present invention form an L-shaped flipping member, when the driving block moves downward, the upper end of the hinge rod moves downward accordingly, and the hinge rod simultaneously performs downward and outward flipping movements, so that the lower end of the fixed rod is unfolded outward.

[0057] In a specific embodiment, the other end of the telescopic rod body 1 is provided with a mounting base 16, which can facilitate the fixing and mounting of the overall structure of the telescopic rod. At the same time, a swivel structure 17 can be provided on the mounting base. The swivel structure is wound with a swivel line 18, and the front end of the swivel line is connected to a fixed pulley to form a structure similar to a fishing rod. When the inspection is completed, the float connection line can be manually wound around the specified pulley by rotating the swivel structure, so that the fixed rod and the stabilizing weight can be retracted and the telescopic rod structure can be removed. Of course, a buckle structure can also be provided on the swivel structure. When the fixed rod and the weight are completely retracted, they are fixed by the buckle structure. When the telescopic rod needs to be used, the buckle structure is loosened, that is, the limiting effect on the weight is cancelled, and the weight can move downward under the action of gravity.

[0058] In a specific embodiment, the interior of the float connection line 5 is a hollow structure hose, and the hollow structure hose is provided with LED lamp beads. The float connection line is set as a hollow structure transparent hose, and the lamp beads are set inside to provide lighting for the inside of the spinal canal, so that the setting of the float can be checked to ensure that the drainage pump can be started and stopped normally. The switch of the lamp bead can be set outside the hollow structure hose through an electric wire. For details, reference can be made to the existing installation method of lamp beads in a narrow space, which will not be elaborated in detail here.

[0059] In a specific embodiment, the shape of the stabilizing weight 6 is a truncated cone structure that is larger at the top and smaller at the bottom, and a circle of semi-spherical hollow elastic buffer balls 20 are arranged along the circumferential direction at the bottom edge of the truncated cone structure. The stabilizing weight of the present invention is a truncated cone structure, which can lower the center of gravity of the stabilizing weight and increase the bottom area, and a circle of elastic buffer balls are arranged at the bottom edge of the stabilizing weight. When the stabilizing weight falls to the bottom of the cone tube, the elastic buffer balls can play a buffering role to avoid damage to the bottom of the spinal canal. In addition, the elastic buffer balls are semi-spherical and hollow, and are gradually flattened when subjected to force. In this way, the elastic buffer balls and the bottom of the spinal canal gradually expand from point contact to surface contact, which can better play a buffering effect, and the contact area gradually increases, the pressure gradually decreases, and damage to the bottom of the spinal canal is avoided.

[0060] In a specific embodiment, the float connection line 5 is provided with scale lines, which can intuitively display the distance of the float.

[0061] In a specific embodiment, an electromagnetic limiting structure is provided between the other end of the driving block 8 and the inner wall of the slide cylinder 3. The present invention fixes the driving block by the electromagnetic limiting structure. When the magnetic force of the electromagnetic limiting structure disappears, the driving block can move downward together under the action of the gravity of the weight to unfold the fixed rod. When the driving block is retracted upward by the rotary structure, the electromagnetic is energized to fix the driving block again to prevent the telescopic rod from being accidentally unfolded after the overall tightening.

[0062] In a specific embodiment, an anti-skid support sheet 13 is provided on the end of the fixing rod 10. The anti-skid support sheet 13 and the fixing rod 10 adopt a universal hinge structure. The anti-skid support sheet 13 is made of a material with a certain elastic deformation ability, and its outer side is similar to a suction cup structure.

[0063] In a specific embodiment, four water level floats 7 are provided, namely a pump start water level float, a standby pump start water level float, a high water level alarm float, and a pump stop water level float.

[0064] In a specific embodiment, the lower end of the slide cylinder 3 is connected to a limit rod 14 , and the stabilizing weight 6 is connected to the limit rod 14 via a movable limit rope 15 , and the movable limit rope 15 is sleeved on the limit rod 14 .

[0065] The present invention provides a limit rod to ensure that the stabilizing weight can maintain verticality and central axis when falling, so as to ensure that the stabilizing weight falls accurately at the bottom of the vertebral canal, and avoid the situation in which the float connecting line 5 swings during the falling process, causing the stabilizing weight to ultimately fail to fall into the preset position, thereby causing the float connecting line to be in an inclined state.

[0066] In a specific embodiment, the fixing rod 10 and the flip component are made of lightweight aluminum, and the supporting connecting tube, sliding tube and other structures can also be made of lightweight aluminum, which can ensure sufficient strength for support and improve the portability of transportation. The anti-slip support sheet 13 is made of rubber material.

[0067] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A telescopic rod for maintenance and drainage of a hydropower plant, characterized in that: It comprises a telescopic rod body (1), a support connecting tube (2) is vertically arranged at the front end of the telescopic rod body (1), a slide tube (3) is sleeved inside the support connecting tube (2), and a fixed pulley (4) is arranged inside the slide tube (3); A float connecting line (5) is wound around the fixed pulley (4), a stabilizing weight (6) is connected to the end of the float connecting line (5) outside the slide cylinder (3), and a plurality of water level floats (7) are sequentially arranged on the float connecting line (5) above the stabilizing weight (6); A driving block (8) is connected to the float connection line (5) inside the slide cylinder (3), a slip ring (9) is sleeved on the outer wall of the slide cylinder (3), and one end of the driving block (8) passes through the wall of the slide cylinder (3) and is connected to the slip ring (9); The sliding ring (9) can move up and down along the outer wall of the sliding cylinder (3); A plurality of fixing rods (10) are sequentially arranged at the lower end of the supporting connecting cylinder (2) along the circumferential direction, the upper ends of the fixing rods (10) are hinged to the ends of the supporting connecting cylinder (2), and a turning member is arranged between the fixing rods (10) and the sliding cylinder (3); The stabilizing weight (6) moves downward under the action of its own weight, and drives the driving block (8) to move downward synchronously through the wound float connecting line (5). The slip ring (9) moves downward along the slide cylinder (3), and under the action of the flip component, drives the lower ends of all the fixing rods (10) to simultaneously unfold outward to form an umbrella-shaped structure.

2. A telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: The flipping member comprises a transmission rod (11) hinged on the side wall of a fixed rod (10); the other end of the transmission rod (11) is connected to a driving block (8) via a hinge rod (12); and the end of the hinge rod (12) is rotatably connected to the transmission rod (11) and the driving block (8).

3. A telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: The other end of the telescopic rod body (1) is provided with a mounting base (16).

4. A telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: The interior of the float connection line (5) is a hollow structural hose, and an LED lamp bead is arranged in the hollow structural hose.

5. The telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: The float connection line (5) is provided with scale lines.

6. A telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: An electromagnetic limiting structure is provided between the other end of the driving block (8) and the inner wall of the slide cylinder (3).

7. The telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: An anti-slip support sheet (13) is provided on the end of the fixing rod (10).

8. The telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: The water level floats (7) are provided with four, namely a pump start water level float, a standby pump start water level float, a high water level alarm float, and a pump stop water level float.

9. The telescopic rod for maintenance and drainage of a hydropower plant according to claim 1, characterized in that: The lower end of the slide cylinder (3) is connected to a limit rod (14), and the stabilizing weight (6) is connected to the limit rod (14) via a movable limit rope (15), and the movable limit rope (15) is sleeved on the limit rod (14).

10. A telescopic rod for maintenance and drainage of a hydropower plant according to claim 7, characterized in that: The fixing rod (10) and the turning member are made of lightweight aluminum material, and the anti-slip support sheet (13) is made of rubber material.

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