A vertical shaft anti-falling device for pumped storage power station

Abstract

The utility model belongs to vertical shaft anti -falling equipment technical field especially relates to a kind of pumped storage power station vertical shaft anti -falling equipment, winding roller both ends are provided with locking mechanism, locking mechanism includes first gear, first gear is installed at the both ends of winding roller, second gear is provided in the side wall of first gear, first rotating rod is provided in the inside of second gear, winding roller both ends are also provided with third gear, chain is provided in the side wall of third gear, fourth gear is provided in the inside of chain, second rotating rod is fixedly installed in the inside of fourth gear, chuck claw is provided in the side wall of first rotating rod and second rotating rod, equipment is locked by being set mechanism, when worker accidentally falls, rope rapidly pulls winding roller rotation, drives gear transmission system, so that chuck claw of symmetrical arrangement is rapidly inwardly clamped winding roller, realize instantaneous locking using the friction between rope and winding roller, effectively prevent rope to continue to release, to prevent worker from continuing to fall, guarantee construction safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of vertical shaft fall prevention equipment, and particularly relates to a vertical shaft fall prevention device for pumped storage power stations. Background Technology

[0002] During the construction and operation of pumped storage power stations, workers frequently need to perform high-altitude operations in vertical passages such as shafts. These working environments present an extremely high risk of falls; therefore, reliable and effective fall protection equipment is crucial to ensuring the safety of personnel.

[0003] Currently, most common fall protection devices for vertical shafts employ speed differential controllers or friction braking principles. However, these devices have some shortcomings in practical applications: First, in the event of a fall, although the braking mechanism can activate, the enormous impact load will instantly act on the rope (or safety rope) and its braking components, easily causing damage or even breakage of the rope due to instantaneous overload, posing a risk of secondary accidents. Second, the response speed and reliability of traditional locking mechanisms need improvement; under certain working conditions, they may experience delayed braking or insufficient braking force, failing to provide comprehensive safety protection for workers. Utility Model Content

[0004] To achieve the above objectives, this utility model proposes a fall prevention device for the vertical shaft of a pumped storage power station, which includes an installation frame, a rope inside the installation frame, a winding roller on the side wall of the rope, and the winding roller is rotatably installed inside the installation frame. The take-up roller is provided with a locking mechanism at both ends. The locking mechanism includes a first gear, which is installed at both ends of the take-up roller. A second gear is provided on the side wall of the first gear. A first rotating rod is provided inside the second gear. A third gear is also provided at both ends of the take-up roller. A chain is provided on the side wall of the third gear. A fourth gear is provided inside the chain. A second rotating rod is fixedly installed inside the fourth gear. Claws are provided on the side walls of the first rotating rod and the second rotating rod. The rope has a buffer mechanism running through its sidewall. The buffer mechanism includes an upper hemisphere with a snap ring inside, and a lower hemisphere at the bottom of the upper hemisphere with a snap groove inside.

[0005] In one example, the third gear is located outside the second gear, and the first and second rotating rods are rotatably mounted inside the mounting bracket.

[0006] In one example, the first rotating rod and the second rotating rod are symmetrically positioned with respect to the center point of the take-up roller.

[0007] In one example, the fourth gear is located at the opposite end of the third gear, and both the third and fourth gears are located inside the chain.

[0008] In one example, the two jaws are arranged in opposite directions with their openings facing the take-up roller. The ends of the jaws are chamfered and the claws of the two jaws are interlocked.

[0009] In one example, the rope is fixedly installed inside the upper and lower hemispheres, with snap-fit ​​grooves that fit into snap-fit ​​rings.

[0010] The fall prevention device for pumped storage power station shafts proposed in this utility model can bring the following beneficial effects: 1. In this utility model, the equipment is equipped with a locking mechanism. When a worker accidentally falls, the rope quickly pulls the winding roller to rotate, which drives the gear transmission system. This causes the symmetrically arranged claws to quickly clamp the winding roller inward. The friction between the rope and the winding roller achieves instantaneous locking, effectively preventing the rope from being released further, thereby preventing the worker from falling further and ensuring construction safety.

[0011] 2. In this utility model, the equipment is equipped with multiple buffer mechanisms on the rope. When the rope is subjected to a large impact force due to sudden braking, the locking ring and locking groove in the buffer mechanism separate, and the upper hemisphere and lower hemisphere separate, gradually consuming the kinetic energy generated by the fall, reducing the instantaneous tension of the rope, avoiding rope breakage due to excessive inertia, and improving the safety and reliability of the equipment. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the winding roller structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the claw structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the rope structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the snap ring structure of this utility model.

[0017] The attached figures are labeled as follows: 11. Mounting frame; 12. Rope; 13. Take-up roller; 14. First gear; 15. Second gear; 16. First rotating rod; 17. Third gear; 18. Chain; 19. Fourth gear; 21. Second rotating rod; 22. Claw; 23. Upper hemisphere; 24. Snap-fit ​​ring; 25. Lower hemisphere; 26. Snap-fit ​​groove. Detailed Implementation

[0018] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0019] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples. Example

[0023] like Figures 1-5As shown, an embodiment of this utility model proposes a fall protection device for a pumped storage power station shaft, which includes a mounting frame 11. Workers use ropes 12 located inside the mounting frame 11 to tie to their bodies. When a worker falls due to an accident, the rope 12 will fall rapidly along with the worker. At this time, the rope 12 will be wrapped around the side wall of the winding roller 13. The winding roller 13 is forced to rotate due to the friction between the ropes 12.

[0024] The locking mechanisms at both ends of the take-up roller 13 will also begin to move. These locking mechanisms include a first gear 14. The take-up roller 13 first drives the first gear 14 to rotate, which in turn drives the second gear 15 to rotate. The second gear 15 then drives the first rotating rod 16 to rotate relative to it. Simultaneously, two third gears 17 are located outside the two first gears 14 on the take-up roller 13. These third gears 17 drive the chain 18 on the side wall to transmit power. Inside the chain 18 is a fourth gear 19, which drives the second rotating rod 21 to rotate in the same direction as the take-up roller 13. The first rotating rod 16 and the second rotating rod 21 rotate in the same direction as the take-up roller 13. The first rotating rod 16 and the second rotating rod 21 are symmetrically arranged at the center point, and both sides of the rod are provided with claws 22. The two claws 22 are arranged in opposite directions, with their openings facing the winding roller 13. The ends of the claws 22 are chamfered to prevent the sharp edges from cutting the rope 12. The two claws 22 are staggered to prevent collisions from causing ineffective protection. At this time, the claws 22 will move quickly towards the winding roller 13. Due to inertia, the claws 22 will be firmly locked onto the side wall of the winding roller 13. Because there is a rope 12 between the winding roller 13 and the claws 22, the strong friction of the rope 12 will prevent the winding roller 13 and the rope 12 from moving again, thus preventing the fall.

[0025] When the take-up roller 13 can no longer rotate, the rope 12 will also be jammed. At the moment the rope 12 is jammed, the inertia is too great due to the influence of gravity acceleration, and the rope 12 will bear a large tensile force. At this time, the buffer mechanism set on the telescopic part will be pulled open. The buffer mechanism includes an upper hemisphere 23, and a lower hemisphere 25 is set at the bottom of the upper hemisphere 23. A locking ring is also set inside the upper hemisphere 23. Similarly, a locking groove 26 matching the locking ring 24 inside the upper hemisphere 23 is also set inside the lower hemisphere 25. Through the locking ring 24 and the locking groove 26 (the locking groove 26 is an annular groove, but on the upper part of the annular groove) There is also a baffle to cooperate with to prevent it from falling off. The upper hemisphere 23 and the lower hemisphere 25 can be installed together. A rope 12 is coiled inside the upper hemisphere 23 and the lower hemisphere 25. The rope 12 will pass through the inside of the upper hemisphere 23 and the lower hemisphere 25 and be tightly connected to the upper hemisphere 23 and the lower hemisphere 25. When the rope 12 is subjected to a large tensile force, the snap ring 24 will be directly pulled apart from the snap groove 26. The upper hemisphere 23 and the lower hemisphere 25 will also separate. Under the action of multiple buffer mechanisms, the inertia generated will be slowly digested, thereby achieving the function of preventing the rope 12 from breaking.

[0026] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0027] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A fall protection device for a pumped storage power station shaft, comprising a mounting frame (11), a rope (12) disposed inside the mounting frame (11), and a winding roller (13) disposed on the side wall of the rope (12), characterized in that, The take-up roller (13) is rotatably mounted inside the mounting frame (11); Locking mechanisms are provided at both ends of the take-up roller (13). The locking mechanisms include a first gear (14), which is installed at both ends of the take-up roller (13). A second gear (15) is provided on the side wall of the first gear (14). A first rotating rod (16) is provided inside the second gear (15). A third gear (17) is also provided at both ends of the take-up roller (13). A chain (18) is provided on the side wall of the third gear (17). A fourth gear (19) is provided inside the chain (18). A second rotating rod (21) is fixedly installed inside the fourth gear (19). A pawl (22) is provided on the side walls of the first rotating rod (16) and the second rotating rod (21). The sidewall of the rope (12) is permeated with a buffer mechanism, which includes an upper hemisphere (23), a snap ring (24) is provided inside the upper hemisphere (23), a lower hemisphere (25) is provided at the bottom of the upper hemisphere (23), and a snap groove (26) is provided inside the lower hemisphere (25).

2. The anti-fall device for the vertical shaft of a pumped storage power station according to claim 1, characterized in that: The third gear (17) is located outside the second gear (15), and the first rotating rod (16) and the second rotating rod (21) are rotatably mounted inside the mounting bracket (11).

3. The anti-fall device for the vertical shaft of a pumped storage power station according to claim 1, characterized in that: The first rotating rod (16) and the second rotating rod are symmetrically arranged with respect to the center point of the take-up roller (13).

4. The anti-fall device for the vertical shaft of a pumped storage power station according to claim 1, characterized in that: The fourth gear (19) is located at the opposite end of the third gear (17), and both the third gear (17) and the fourth gear (19) are located inside the chain (18).

5. The anti-fall device for the vertical shaft of a pumped storage power station according to claim 1, characterized in that: The two jaws (22) are arranged in opposite directions and their openings face the winding roller (13). The ends of the jaws (22) are chamfered and the claws of the two jaws (22) are interlocked.

6. The anti-fall device for the vertical shaft of a pumped storage power station according to claim 1, characterized in that: The rope (12) is fixedly installed inside the upper hemisphere (23) and the lower hemisphere (25), and the snap-fit ​​groove (26) is adapted to the snap-fit ​​ring (24).

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