Float discharge hole overhauling device

Abstract

The utility model relates to a drift discharging hole overhauling device which comprises a lower truss and an upper working platform. The lower truss comprises a frame body and walking wheels arranged at the lower end of the frame body; the upper working platform comprises a fixed base, a movable platform and an adjusting assembly, the fixed base is fixed to the upper end face of the lower truss, one end of the movable platform is rotationally connected with the fixed base, and the adjusting assembly is arranged between the fixed base and the movable platform and used for adjusting the included angle between the fixed base and the movable platform. The walking wheel system is combined with the angle-adjustable platform, so that the flexibility and the safety of overhauling of the dam drift discharging hole are remarkably improved. The lower truss is provided with a moving device which can stably move along the top face of the slope, and the area limitation of a traditional fixed platform is broken through. The upper working platform adopts a hinged design, different gradients of the slope section of the drift discharging hole are matched in real time through the adjusting assembly, and the problems that a large-dip-angle slope working platform is difficult to build and poor in stability are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reservoir dam overhauling operation, concretely relates to a kind of discharge hole overhauling device. BACKGROUND

[0002] As important water conservancy infrastructure, the safe operation of reservoir dam relies on the functional maintenance of various discharge structures. As a key auxiliary structure of the dam, the discharge hole is mainly used for discharging floating objects in the reservoir area to avoid blocking the flood discharge channel or damaging the gate equipment. Due to the scouring of high-speed water flow with debris for a long time, diseases such as concrete erosion and water stop failure easily occur inside the discharge hole, especially the slope section extending from the gate chamber to the downstream, the maintenance demand of its side wall and bottom plate is particularly urgent. However, the internal space of the discharge hole is narrow, the structure is complex, and the slope of the slope section is steep, so the traditional maintenance equipment cannot realize safe and efficient operation coverage, which becomes a technical difficulty in dam operation and maintenance.

[0003] Currently, the maintenance of the discharge hole mainly relies on artificial erection of scaffolding or use of simple hanging basket platforms. Fixed scaffolding needs to be erected layer by layer on the slope section, which has problems such as long construction time and difficult material transportation, and the scaffolding directly contacts the surface of the flow passage, which may cause secondary damage. Although the hanging basket system can suspend workers through a winch, its coverage is limited and it is difficult to adapt to the slope changes of the slope section, which has the risk of overturning. In addition, some projects try to use temporary support platforms, but the platforms have poor stability and cannot realize continuous operation on multiple slope sections, which requires repeated disassembly and reorganization, greatly reducing the maintenance efficiency. These methods generally have limited operation space, low equipment adaptability and high safety risks, which cannot meet the full-scene maintenance needs of complex discharge hole structures.

[0004] With the increasing requirements of the water and electricity industry on maintenance efficiency and safety, it is urgent to develop a special maintenance device integrating movement, angle adjustment and stable support functions. UTILITY MODEL CONTENTS

[0005] Based on the above description, the utility model provides a discharge hole maintenance device to solve the technical problems of limited operation space, low equipment adaptability and high safety risks of temporary scaffolding in the prior art.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A discharge hole maintenance device includes a lower truss and an upper working platform.

[0008] The lower truss includes a frame body and a walking wheel arranged at the lower end of the frame body.

[0009] The upper work platform comprises a fixed base, a movable platform and an adjusting assembly, the fixed base is fixed to the upper end surface of the lower truss, one end of the movable platform is rotationally connected with the fixed base, and the adjusting assembly is arranged between the fixed base and the movable platform and used for adjusting the included angle of the fixed base and the movable platform.

[0010] Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

[0011] The dam debris discharge hole maintenance device is combined with the angle-adjustable platform through the walking wheel system, thereby significantly improving the flexibility and safety of dam debris discharge hole maintenance. The lower truss is provided with a moving device and can stably move along the slope top surface, thereby breaking through the area limitation of the traditional fixed platform. The upper work platform is designed in a hinged manner and can match different slopes of the debris discharge hole slope section in real time through the adjusting assembly, thereby solving the problems of difficult construction of the work platform on a large-inclination slope and poor stability. The device integrates the angle adjustment and moving functions, can complete full-coverage maintenance without repeated disassembly and assembly of the equipment, avoids damage to the structure surface caused by the traditional scaffold, and reduces the safety hazards of high-altitude operation. The device provides a safe, reliable and highly adaptable technical scheme for maintenance of the special structure of the reservoir dam debris discharge hole.

[0012] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0013] Further, the lower truss comprises two cross beams arranged at intervals in the front-rear direction, the cross beams are formed by sectional welding, and flange plates are arranged at both ends of each section of the cross beam.

[0014] Further, the flange plates on the two cross beams are arranged correspondingly in the front-rear direction, and the corresponding flange plates are connected and fixed through a pull rod.

[0015] Further, the walking wheels are arranged correspondingly at the lower ends of the flange plates.

[0016] Further, the upper work platform is arranged at a position close to the two ends of the lower truss.

[0017] Further, the adjusting assembly comprises a telescopic driving member and a support frame, one end of the support frame is hinged to the movable platform, the other end of the support frame is slidingly arranged on the fixed base, one end of the telescopic driving member is connected to the fixed base, and the other end of the telescopic driving member is connected to the support frame, the telescopic driving member, the support frame and the movable platform form a triangular support structure with adjustable side length, and the telescopic driving member is telescopic to change the shape of the triangular support structure.

[0018] Further, the telescopic driving member is a driving cylinder.

[0019] Further, the movable platform comprises a platform base and a fence arranged at the side of the platform base. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structural schematic diagram of a drift hole overhauling device provided by an embodiment of the present application is shown in the figure.

[0021] Figure 2 A structural schematic diagram of an upper working platform in an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0024] It will be understood that the spatially relative terms "beneath", "below", "lower", "under", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0025] It is noted that when an element is referred to as being "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intervening element. "Connected" in the following embodiments should be understood as "electrically connected", "communicatively connected" and the like if the circuits, modules, units and the like connected to each other have transmission of electrical signals or data.

[0026] As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including", or the like, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0027] As shown in the figure, the embodiment of the present application provides a kind of row drift hole overhauling device, it includes lower truss 10 and upper working platform 20.

[0028] Wherein, the lower truss 10 includes frame body 11 and the walking wheel 12 of setting in the lower end of frame body 11, walking wheel 12 adopts high-strength rubber coating design, can move along row drift hole ground, improve the anti-slippage ability of device in humid environment.

[0029] The upper working platform 20 includes fixed base 21, movable platform 22 and adjusting assembly 23, the fixed base 21 is fixed to the upper end surface of the lower truss 10 by bolt group, and the bolt group adopts anti-loosening structure design, to ensure the connection reliability of platform in vibration working condition.

[0030] One end of the movable platform 22 is rotatably connected to the fixed base 21 by a hinge shaft 25, the hinge shaft 25 is internally provided with self-lubricating bearing to reduce the rotating friction resistance; the adjusting assembly 23 is arranged between the fixed base 21 and the movable platform 22, for adjusting the included angle of the fixed base 21 and the movable platform 22.

[0031] Optionally, the lower truss 10 includes two cross beams 13 spaced apart in front and back direction, the cross beam 13 adopts segmented welding forming, each segment of cross beam 13 is connected by flange plate 28, to facilitate on-site quick assembly and adapt to different length row drift hole overhauling needs.

[0032] Two flange plates 15 on the cross beam 13 are correspondingly arranged in front and back direction, and the corresponding flange plates 15 are connected and fixed by tie rod 16, the tie rod 16 adopts pre-stressed tensioning technology, effectively eliminating the deformation of truss structure caused by load change. The walking wheel 17 is correspondingly arranged at the lower end of the flange plate 15.

[0033] Specifically, the upper working platform 20 is arranged at the positions 18 close to the two ends of the lower truss 10, the platform layout adopts a bilateral symmetrical design 32, ensuring that the maintenance personnel can work synchronously from both sides, improving the work efficiency. The adjusting assembly 23 comprises a telescopic driving part 231 and a support frame 232, one end of the support frame 232 is hinged to the movable platform 22 through a spherical hinge joint 33, and the other end is slidingly arranged in a sliding groove 233 of the fixed base 21. Preferably, the end of the support frame 232 is provided with a fixed plate 234, and pulleys are arranged on both sides of the fixed plate and rolling arranged in the sliding groove 233, so as to ensure the stability of the movement of the support frame 232 and the positioning accuracy.

[0034] The telescopic driving part 231 adopts a hydraulic cylinder connected to the fixed base 21 and the support frame 232, and a displacement sensor is arranged in the hydraulic cylinder to feed back the platform angle data in real time. The telescopic driving part 231, the support frame 232 and the movable platform 22 form a length-adjustable triangular support structure 237, and the triangular support structure 237 is optimized by variable topology mechanics to realize uniform load transmission of the platform at any angle.

[0035] More preferably, the telescopic driving part 231 is a driving air cylinder, and preferably, the driving air cylinder is provided with a redundant safety valve group, which can automatically lock the piston rod position in the event of sudden pressure loss to prevent the platform from overturning.

[0036] In the embodiment, the movable platform 22 comprises a platform bottom plate 221 and a fence 222 arranged on the side of the platform bottom plate 221, and the fence 222 preferably adopts a foldable protective net structure, which can be unfolded to form a closed working space and can be folded to facilitate personnel to get on and off.

[0037] In a more preferred embodiment, the platform bottom plate 221 is paved with anti-skid pattern steel plates, and the bottom is additionally provided with transverse reinforcing ribs 45 to improve the bending stiffness of the platform and reduce the vibration amplitude.

[0038] Preferably, mechanical limiting blocks 46 are arranged at the ends of the sliding groove 233 to limit the sliding stroke of the support frame 232 and prevent the adjusting assembly 23 from overloading.

[0039] The drift hole maintenance device provided in the application is pulled by a specific traction mechanism during use, without the need to provide power by itself, simplifying the structure design. In the embodiment of the application, a 5T winch is used for traction; the winch is fixed to the end of the drift hole maintenance device through two lifting points at the lower end of the arc door by a steel wire rope.

[0040] The dam drift hole overhauling device provided by the application combines a walking wheel system with an angle-adjustable platform, significantly improving the flexibility and safety of dam drift hole overhauling. The lower truss 10 is equipped with a moving device and can move smoothly along the slope top surface, breaking through the area limit of the traditional fixed platform; the upper working platform 20 adopts a hinged design and matches different slopes of the drift hole slope section in real time through the adjusting assembly 23, solving the problems of difficult construction of the working platform on a large-inclination slope and poor stability. The device integrates angle adjustment and moving functions, can complete full-coverage overhauling without repeated disassembly and assembly of the equipment, avoids the damage risk of the traditional scaffold to the structure surface, and reduces the safety hazards of high-altitude operation. A safe and reliable technical solution with strong adaptability is provided for the maintenance of the special structure of the reservoir dam drift hole.

[0041] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for inspecting and repairing a draft tube, characterized in that, The lower truss and the upper working platform are provided. The lower truss comprises a frame body and a walking wheel arranged at the lower end of the frame body. The upper working platform comprises a fixed base, a movable platform and an adjusting assembly.

2. The device according to claim 1, wherein The lower truss comprises two cross beams arranged in the front-rear direction.

3. The device according to claim 2, wherein Each section of the cross beam is provided with flange plates at both ends.

4. The device of claim 2, wherein, The flange plates on the two cross beams are arranged in the front-rear direction.

5. The device of claim 1, wherein, The walking wheels are arranged at the lower ends of the flange plates.

6. The device of claim 1, wherein, The upper working platform is arranged at the position close to the two ends of the lower truss.

7. The device of claim 6, wherein, The adjusting assembly comprises a telescopic driving member and a support frame.

8. The device of claim 1, wherein, The telescopic driving member is a driving cylinder. The movable platform comprises a platform bottom plate and a fence arranged at the side of the platform bottom plate.

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