Transportation dam-passing system suitable for fish lifting machine engineering

Abstract

The utility model relates to a transportation dam-passing system suitable for fish lifting machine engineering, which comprises a slope fixedly arranged on an overflow dam section of a dam, the top end of the slope is connected with the dam top of the dam without fall, a rail transportation mechanism is arranged on the slope, and a hoisting mechanism is arranged on the dam top. The system is arranged on an overflow dam section of a dam, inclined rail lifting and horizontal transportation modes are combined, and after being transferred through a transfer platform, a rail transportation mechanism and a hoisting mechanism to pass through the dam, the fish transporting box descends to a fish transporting ship to be transferred. The dam crest of the system is directly connected with the slope, the slope section is gentle in gradient when the first slope reaches the top, a fixed pulley and equipment for steering and guiding are omitted, the working procedure is simple, meanwhile, hooking and unhooking operation of a fish collecting hopper by workers is omitted, labor is saved, and the working efficiency is improved. More importantly, high-altitude operation during hooking and unhooking operation of workers is avoided, the safety and reliability of the fish collecting hopper in the operation process are greatly improved, and operation and maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to a transport dam crossing system suitable for fish lift projects, and relates to the design field of fish lifts in water conservancy projects. Background Technology

[0002] With societal progress and increasing environmental awareness, large-scale hydropower projects under construction in recent years have incorporated fish passage facilities to mitigate adverse impacts on fish habitats and prevent obstruction. Fish lifters are a common type of fish passage facility. A typical fish lift system consists of a fish-attracting system, a dam-crossing transport system, a fish release system, and auxiliary systems. During operation, the fish-attracting system first lures downstream fish into the collection channel. Fish are then driven into the collection bins using fish-driving barriers, lifted to a transfer platform, sorted, observed, and moved to transport containers. The dam-crossing transport system then uses tracks to transport the containers over the dam top to the upstream fish release platform. From there, the containers are hoisted into a fish transport boat within the reservoir and transported to a suitable location at the stern, allowing the fish to swim freely out. The fish inlet is located near the outlet of the tailrace channel guide wall of the power plant. The fish-attracting system mainly consists of the inlet, collection channel, fish-driving barriers, gate facilities, and a control system. The fish release system mainly consists of fish transport boats, berthing docks, and release docks. The fish transport boats carry fish boxes to a suitable location at the end of the reservoir, allowing the fish to swim freely. A berthing dock for the fish transport boats is set up in front of the dam, and a release dock is set up at a suitable location at the end of the reservoir. Auxiliary systems include life support equipment for the transportation process, laboratories, and monitoring facilities.

[0003] Common dam transport systems include vertical transport within the dam and dam-face traction rail transport. The dam-face traction rail transport system typically involves: fish are caught in a collection container at the downstream fish collection platform and then lifted to a transfer platform. The collection container is then transported via a traction rail on the downstream slope of the dam (water-retaining section) to the junction of the vertical slope and the sloping surface of the downstream face of the dam. From there, a trolley on the dam crest lifts the container upwards to the dam crest, transports it horizontally to the upstream side of the dam, and then lowers it onto a fish transport vessel. The vessel then carries the fish to the release dock within the reservoir for release. The main workflow is: fish collection platform → transfer platform → dam-face traction rail → dam crest → release.

[0004] The dam-face traction track scheme, located on the dam's retaining section, is limited by the fixed shape of the dam. The fish transport vehicle can only reach the junction of the vertical slope and the sloping surface of the downstream dam face along the downstream dam's inclined track. A trolley on the dam top is then needed to lift the fish collection bucket to the dam top, and then transport it horizontally to the upstream dam. The entire vertical lifting process is divided into two parts: inclined slope lifting and vertical lifting. This process is cumbersome, has low safety, low operating efficiency, and is inconvenient for operation and maintenance. A detailed analysis follows:

[0005] The fish transport vehicle is a frame-box structure, normally parked at the bottom of the downstream slope. After the fish collection bucket is placed, it is pulled by a winch on the dam crest. The slope is quite steep (generally a 1:0.75 ratio), and due to a significant vertical slope below the dam crest on the downstream side, a fixed pulley for steering and guidance must be installed at the junction of the vertical slope and the sloping surface. Once the fish collection bucket is pulled to this junction, it is then hoisted to the dam crest using a trolley on the dam crest. Because this area is suspended, workers must descend from the dam crest to the junction platform to hook and unhook the fish collection bucket, ensuring its safe transport. The workers' descent involves a considerable vertical distance (generally 8-10 meters), resulting in low safety, low operational efficiency, and inconvenient operation and maintenance.

[0006] To address the above problems, this invention proposes a novel transportation system for crossing dams, namely a slope-to-top lifting system for crossing dams. Utility Model Content

[0007] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a transportation dam crossing system suitable for fish lift projects.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is: a transportation system for crossing a dam in a fish lift project, including a slope fixed to the overflow section of the dam, the top of the slope being connected to the top of the dam without any drop, a rail transportation mechanism being provided on the slope, and a hoisting mechanism being provided on the top of the dam.

[0009] Preferably, a transfer platform is connected to the bottom end of the slope.

[0010] Preferably, the rail transport mechanism includes a track fixed on a slope, on which a fish transport vehicle is mounted, and the fish transport vehicle is pulled on the track by a winch located on the top of the dam.

[0011] Preferably, the fish transport vehicle is equipped with a fish transport box with a hook.

[0012] Preferably, the hoisting mechanism consists of a trolley-type gate hoist, a horizontal transfer tool, and a two-way gantry crane.

[0013] Preferably, the horizontal transfer tool is a transfer flatbed cart, which is set on a transverse track that extends from the left bank of the dam crest to the right bank.

[0014] Preferably, the trolley-type gate hoist and the bidirectional gantry crane are fixedly installed on the top of the dam.

[0015] Preferably, the slope ratio of the slope is 1:1.08.

[0016] Preferably, the slope is composed of a heightened guide wall for the overflow dam section and a heightened guide wall for the powerhouse.

[0017] Preferably, the ramp is provided with stair steps on the side of the track for easy maintenance.

[0018] Compared with existing technologies, this utility model has the following advantages: The system is deployed on the spillway section of the dam, employing a combination of inclined rail lifting and horizontal transportation. Fish containers are transferred across the dam via a transfer platform, rail transport mechanism, and hoisting mechanism, and then lowered onto a fish transport boat for transfer. The system is directly connected to the dam crest and slope, providing a smooth, one-step process. The slope is relatively gentle, eliminating the need for a fixed pulley that also serves as a steering and guiding mechanism. This simplifies the equipment and procedures, and eliminates the need for workers to manually attach and detach the fish collection buckets, saving labor and improving work efficiency. More importantly, it avoids high-altitude work during attachment and detachment operations, greatly improving the safety and reliability of the fish collection bucket operation and simplifying operation and maintenance (only requiring work on the dam crest).

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a front view of an embodiment of the present utility model.

[0021] Figure 2 for Figure 1 AA sectional view.

[0022] Figure 3 for Figure 1 BB cross-sectional view.

[0023] Figure 4 This is a top view of an embodiment of the present utility model.

[0024] Figure 5 This is the main view of the existing technology.

[0025] In the diagram: 1. Overflow dam section, 2. Slope, 3. Rail transport mechanism, 4. Hoisting mechanism, 5. Transfer platform, 6. Rail, 7. Fish transport vehicle, 8. Winch, 9. Transfer flatbed car, 10. Trolley-type gate hoist, 11. Overflow dam section heightened guide wall, 12. Powerhouse heightened guide wall, 13. Stair treads, 14. Dam top, 15. Inlet, 16. Powerhouse, 17. Two-way gantry crane track. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, 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 pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] like Figures 1-5 As shown, this embodiment provides a transport dam crossing system suitable for fish lift projects, including a slope 2 fixed to the overflow dam section 1 of the dam, the top of the slope and the dam crest 14 of the dam being connected without any drop, a rail transport mechanism 3 being provided on the slope, and a hoisting mechanism 4 being provided on the dam crest.

[0030] In this embodiment of the invention, a transfer platform 5 is connected to the bottom end of the slope.

[0031] In this embodiment of the utility model, the rail transport mechanism includes a rail 6 fixed on a slope, a fish transport vehicle 7 is installed on the rail, and the fish transport vehicle moves on the rail by being pulled by a winch 8 located on the top of the dam.

[0032] In this embodiment of the invention, the fish transport vehicle is equipped with a fish transport box with a hook.

[0033] In this embodiment of the utility model, the hoisting mechanism consists of a trolley-type gate hoist 10, a horizontal transfer tool, and a two-way gantry crane.

[0034] In this embodiment of the utility model, the horizontal transfer tool is a transfer flatbed cart 9, which is set on a transverse track that extends from the left bank of the dam crest to the right bank.

[0035] In this embodiment of the utility model, the trolley-type gate hoist and the bidirectional gantry crane are fixedly installed on the top of the dam.

[0036] In this embodiment of the invention, the slope ratio of the ramp is 1:1.08.

[0037] In this embodiment of the utility model, the slope is composed of the overflow dam section heightened guide wall 11 and the powerhouse heightened guide wall 12.

[0038] In this embodiment of the utility model, the ramp is provided with stair steps 13 on the side of the track for easy maintenance.

[0039] In this embodiment of the invention, the working principle of the transport and dam crossing system applicable to fish lift projects is as follows:

[0040] After the fish are transferred to the fish transport box on the transfer platform, the fish transport vehicle carrying the fish transport box is pulled to the top of the slope (dam top) by a winch at the top of the slope. The track foundation is arranged using the heightened guide wall of the overflow dam section and the heightened guide wall of the powerhouse. The track is 3.0m wide and 1.5m gauge. The fish transport vehicle is a frame box structure, weighing about 50kN. It is normally parked at the transfer platform at the bottom of the downstream slope. After the fish transport box is placed, it is pulled to the top of the slope by the winch at a speed of about 10 m / min.

[0041] After the fish transport vehicle is lifted to the top of the dam, the trolley-type gate hoist lifts the fish transport box over the inclined traction winch via a hydraulic automatic grab beam and moves longitudinally to the top of the dam. Then it is placed on a transfer flatbed with transverse tracks on the top of the dam. When the transfer flatbed moves horizontally to the bidirectional gantry crane near the water inlet on the right bank, it is hoisted and transferred to the fish transport boat in front of the dam by the slewing crane on the gantry crane and the hydraulic automatic grab beam.

[0042] This system is deployed on the spillway section of the dam, employing a combination of inclined rail lifting and horizontal transportation. Fish containers are transferred across the dam via a transfer platform, rail transport mechanism, and hoisting mechanism, before being lowered onto a fish transport boat for further transfer. The system connects directly to the dam crest and slope, with a gentle gradient (1:1.08), eliminating the need for fixed pulleys that also serve as steering and guidance. This simplifies the equipment and procedures, and eliminates the need for workers to manually attach and detach the fish collection containers, saving labor and increasing efficiency. More importantly, it avoids the need for workers to perform high-altitude operations during attachment and detachment, significantly improving the safety and reliability of the fish collection containers and simplifying operation and maintenance (only requiring access from the dam crest).

[0043] To achieve a track structure that runs from top to bottom on the slope, the track foundation for the slope section consists of a raised guide wall for the overflow dam section and a raised guide wall for the factory building. It is 3m wide, with 2m wide steps on the outside for easy maintenance.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A transport and dam crossing system suitable for fish lift projects, characterized in that: It includes a slope fixed to the overflow section of the dam, the top of the slope being connected to the top of the dam without any drop, a rail transport mechanism being installed on the slope, and a hoisting mechanism being installed on the top of the dam.

2. The transport and dam crossing system applicable to fish lift projects according to claim 1, characterized in that: A transfer platform is connected to the bottom of the slope.

3. The transport and dam crossing system applicable to fish lift projects according to claim 1, characterized in that: The rail transport mechanism includes a track fixed on a slope, on which a fish transport vehicle is mounted, and the fish transport vehicle moves on the track by being pulled by a winch located on the top of the dam.

4. The transport and dam crossing system applicable to fish lift projects according to claim 3, characterized in that: The fish transport vehicle is equipped with fish transport boxes with hooks.

5. The transport and dam crossing system applicable to fish lift projects according to claim 1, characterized in that: The hoisting mechanism consists of a trolley-type gate hoist, a horizontal transfer tool, and a two-way gantry crane.

6. The transport and dam crossing system applicable to fish lift projects according to claim 5, characterized in that: The horizontal transfer tool is a transfer flatbed cart, which is set on a transverse track that extends from the left bank of the dam crest to the right bank.

7. The transport and dam crossing system applicable to fish lift projects according to claim 5, characterized in that: The trolley-type gate hoist and the bidirectional gantry crane are fixedly installed on the top of the dam.

8. The transport and dam crossing system applicable to fish lift projects according to claim 1, characterized in that: The slope ratio of the slope is 1:1.

08.

9. The transport and dam crossing system applicable to fish lift projects according to claim 1, characterized in that: The slope consists of the heightened guide wall of the overflow dam section and the heightened guide wall of the powerhouse.

10. The transport and dam crossing system applicable to fish lift projects according to claim 3, characterized in that: The ramp has stair steps on the side of the track for easy maintenance.

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