Bulb tubular water-turbine generator set maintenance ladder cage

Abstract

The utility model belongs to the technical field of generator set maintenance, and particularly relates to a bulb tubular water-turbine generator set maintenance ladder cage which comprises a supporting frame, a ladder cage body and a ladder cage body. The handrail frame is located at the top of the supporting frame, and two handrails are arranged on the inner sides of the two side walls of the handrail frame; the two supporting rods are symmetrically arranged on the bearing plate and are close to the rear end of the supporting frame; the supporting rods are provided with first sliding seats in sliding fit with the supporting rods, and the two first sliding seats are connected through a connecting rod. A sliding seat II in sliding fit with the connecting rod is arranged on the connecting rod; a limiting ring matched with the safety rope lock catch is arranged on the sliding seat II; the two crawling ladders are arranged at the front end of the supporting frame; and the cross beams on the two crawling ladders are distributed in a staggered manner. The safety protection device can play a role in safety protection when a worker accidentally falls down, and has a good market application prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of generator set maintenance, and particularly relates to a maintenance ladder cage for a bulb tubular hydro-generator set. Background Technique

[0002] A bulb-type hydro-generator refers to a hydro-generator in which the generator and bearings are arranged in a sealed housing shaped like a bulb, and is mostly used in low-head hydropower stations with a working head range of 3 - 25m. The bulb-type hydro-generator is directly connected to the water turbine shaft and arranged in the flow channel, and its characteristics are compact and complex structure layout, with special requirements such as moisture-proof and leakage-proof. Since the bulb-type hydro-generator is installed in the underwater flow channel, the winding is prone to moisture absorption when the unit is shut down, so its rated voltage is lower than that of general hydro-generators.

[0003] The patent with the application number CN202321194077.8 discloses an auxiliary platform for the upper and lower tailwaters of the conical pipe access door of a large hydro-generator, including a conical pipe door frame, lifting lugs and a platform bottom plate. Lifting lugs are installed above the conical pipe door frame, the lower end of the conical pipe door frame is vertically connected to the platform bottom plate through a foundation frame, and a ladder safety cage is connected to the side of the platform bottom plate. The device of the utility model can provide safety protection for maintenance personnel entering the tailwater for the first time, avoid potential safety hazards and psychological shadows for acrophobic patients, and also provide a strong guarantee for the safe and stable operation of the unit. However, the ladder safety cage connected to the side of the platform bottom plate is not provided with a falling prevention component, and it is difficult to play a safety protection role when the staff accidentally falls.

[0004] The information disclosed in this background technical part is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a maintenance ladder cage for a bulb tubular hydro-generator set to solve the problem that the safety cage is not provided with a falling prevention component and it is difficult to play a safety protection role when the staff accidentally falls.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A maintenance ladder cage for a bulb tubular hydro-generator set includes:

[0008] A support frame, with a pedal at the top and a load-bearing plate at the bottom;

[0009] An armrest frame, located at the top of the support frame, with 2 armrests provided on the inner sides of its two side walls;

[0010] Support rods, two of which are symmetrically arranged on the load-bearing plate and are close to the rear end of the support frame; a first sliding seat that is slidably engaged with the support rod is provided on the support rod, and the two first sliding seats are connected by a connecting rod; a second sliding seat that is slidably engaged with the connecting rod is provided on the connecting rod, and a limiting ring that is engaged with the safety rope buckle is provided on the second sliding seat;

[0011] Ladders, two of which are provided at the front end of the support frame; the cross beams on the two ladders are staggered.

[0012] Preferably, a semi-circular notch is formed on one side of the pedal close to the center of the support frame.

[0013] Preferably, a safety warning board is rotatably connected to the middle of the front wall plate of the handrail frame; safety warning words are engraved on the front end of the safety warning board, and two groups of symmetrically arranged lighting lamp groups are provided at the rear end.

[0014] Preferably, the support rod is a hexagonal prism rod, and its top is fixedly welded to the bottom of the pedal

[0015] Preferably, inclined gripping rods are provided on the inner vertical rods of the two ladders; the gripping rods are located outside the support frame, and the end far from the ladder is lower than the end welded to the ladder.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) For the overhaul ladder cage of the bulb tubular hydro-generator set of the utility model, the limiting ring on the second sliding seat cooperates with the buckle of the safety rope around the staff's waist, which can play a role in decelerating in case of accidental fall, and can prevent the staff from falling in danger under unprotected conditions.

[0018] (2) For the overhaul ladder cage of the bulb tubular hydro-generator set of the utility model, a safety warning board is provided at the front end of the handrail frame, which can be viewed by the staff before climbing down, playing a role of prompting and warning; two groups of symmetrically arranged lighting lamp groups are provided at the rear end of the safety warning board, which can illuminate the inside and outside of the support frame at the same time, facilitating the staff to pay attention to the positions of grasping and stepping, and reducing the risk of accidents.

[0019] (3) For the overhaul ladder cage of the bulb tubular hydro-generator set of the utility model, the ladder and the support frame are integrally formed, which is convenient for the staff to climb up and down; inclined gripping rods are provided on the inner vertical rods of the ladder, which can facilitate the staff to hold and exert force. Brief Description of the Drawings

[0020] Figure 1 is the external schematic diagram of the utility model;

[0021] Figure 2 is the front view of the utility model;

[0022] Description of Main Reference Numerals:

[0023] 1. Support frame; 2. Pedal; 3. Load-bearing plate; 4. Handrail frame; 5. Handrail; 6. Support rod; 7. Slide seat one; 8. Connecting rod; 9. Slide seat two; 10. Limit ring; 11. Ladder; 12. Safety warning board; 13. Lighting unit; 14. Holding rod. Detailed Implementation Manner

[0024] The technical solution of the patent of the present utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts belong to the scope protected by the present utility model.

[0025] In the description of the present utility model, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the utility model.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Referring to the attached Figure 1-2 , a maintenance ladder cage for a bulb tubular hydro-generating unit, comprising:

[0028] A support frame 1, with a pedal 2 provided at its top and a load-bearing plate 3 provided at its bottom;

[0029] A handrail frame 4, located at the top of the support frame 1, and two handrails 5 are provided on the inner sides of its two side walls;

[0030] Two support rods 6 are symmetrically arranged on the load-bearing plate 3, close to the rear end of the support frame 1; a slide seat one 7 that is slidably matched with the support rod 6 is provided on the support rod 6, and the two slide seats one 7 are connected by a connecting rod 8; a slide seat two 9 that is slidably matched with the connecting rod 8 is provided on the connecting rod 8, and a limit ring 10 that is lock-matched with a safety rope is provided on the slide seat two 9;

[0031] Two ladders 11 are provided at the front end of the support frame 1; the cross beams on the two ladders 11 are staggered.

[0032] In this embodiment, a semi-circular notch is provided on one side of the pedal 2 close to the center of the support frame 1, which facilitates the staff to hold the handrail 5 and enter and exit the support frame 1. A safety warning board 12 is rotatably connected to the middle of the front wall plate of the handrail frame 4. Safety warning words are engraved on the front end of the safety warning board 12, which can be viewed by the staff before entering the ladder cage to remind the staff to keep safety operation matters in mind.

[0033] In addition, two sets of symmetrically arranged lighting lamp groups 13 are provided at the rear end of the safety warning board 12. After the staff has viewed the safety warning words, rotate the safety warning board 12 so that the lighting lamp groups 13 face downwards. The two lighting lamp groups 13 can respectively illuminate the inside and outside of the support frame 1, facilitating the staff to clearly see the grasping points and the positions of the feet.

[0034] The support rod 6 is a hexagonal prism rod, and its top is fixedly welded to the bottom of the pedal 2. A hexagonal chute is provided inside the second sliding seat 9 and is slidably matched with the support rod 6. When the staff's foot slips or accidentally falls, the frictional resistance between the support rod 6 and the second sliding seat 9 will slow down the falling speed of the staff, giving the staff time for a quick response and avoiding serious injuries. Even if the staff does not react in time, when the second sliding seat 9 slides down to the bottom of the support rod 6, the second sliding seat 9 will land on the load-bearing plate 3 at the bottom of the support frame 1, which can prevent the staff from falling further and ensure that life is not threatened.

[0035] On the other hand, inclined gripping rods 14 are provided on the inner vertical rods of the two ladders 11; the gripping rods 14 are located outside the support frame 1. Considering people's climbing habits, the end of the gripping rod 14 far from the ladder 11 is lower than the end welded to the ladder 11, which can make it more convenient for the staff to hold and exert force, and can play a better role in leveraging.

[0036] The overhaul ladder cage of the bulb tubular hydro-generator set of the utility model can play a safety protection role when the staff accidentally falls through the cooperation of the limit ring 10 on the first sliding seat 7 and the safety rope buckle. Combined with the friction between the first sliding seat 7 and the support rod 6 to slow down the falling speed, it is beneficial to ensure the life safety of the staff, is very practical, and has good market application prospects.

[0037] The foregoing description of the specific exemplary embodiments of the present utility model is for purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is apparent that many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. A maintenance ladder cage for a bulb tubular hydro-generating unit, characterized in that, Comprising: A support frame with a pedal at the top and a load-bearing plate at the bottom; An armrest frame located at the top of the support frame, with two armrests provided on the inner sides of its two side walls; Two support rods symmetrically arranged on the load-bearing plate, near the rear end of the support frame; a first sliding seat slidably engaged with the support rod is provided on the support rod, and the two first sliding seats are connected by a connecting rod; a second sliding seat slidably engaged with the connecting rod is provided on the connecting rod, and a limiting ring for engaging with a safety rope buckle is provided on the second sliding seat; Two ladders provided at the front end of the support frame; the cross beams on the two ladders are staggered.

2. The overhaul ladder cage of the bulb tubular hydro-generating unit according to claim 1, wherein A semi-circular notch is formed on one side of the pedal close to the center of the support frame.

3. The overhaul ladder cage of the bulb tubular hydro-generating unit according to claim 1, characterized in that A safety warning board is rotatably connected to the middle of the front wall plate of the armrest frame; safety warning words are engraved on the front end of the safety warning board, and two sets of symmetrically arranged lighting groups are provided at the rear end.

4. The overhaul ladder cage of the bulb tubular hydro-generating unit according to claim 1, characterized in that The support rod is a hexagonal prism rod, and its top is fixedly welded to the bottom of the pedal.

5. The overhaul ladder cage of the bulb tubular hydro-generating unit according to claim 1, characterized in that, Inclined gripping bars are provided on the inner vertical rods of the two ladders; the gripping bars are located outside the support frame, and the end far from the ladder is lower than the end welded to the ladder.

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