Safety protection device for wind power tower internal ladder

Abstract

This utility model relates to the field of ladder technology, specifically a safety protection device for a ladder inside a wind turbine tower. It includes: a tower body, with support frames fixedly connected to both ends of the inner wall of the tower body, and a ladder body fixedly installed at the right end of the support frames; a guide seat, with limiting grooves on both the front and rear sides of one end of the guide seat, and a guide groove at the middle of the left side of the guide seat, with multiple equidistant arc-shaped locking grooves on both sides inside the guide groove. This utility model, based on gravity assistance, forms a three-point stable structure in the event of an accidental fall, effectively preventing the worker from falling and ensuring their safety. Furthermore, it eliminates the need for frequent adjustments to the connection position of the safety harness buckle hook with the ladder during climbing, making it convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of ladder technology, specifically a safety protection device for ladders inside wind turbine towers. Background Technology

[0002] A wind turbine tower is the support structure for a wind turbine generator, primarily serving to support the turbine and absorb vibrations. Wind turbine towers are typically cylindrical steel structures ranging from tens to hundreds of meters in height. The wind power equipment (such as generators, gearboxes, and converters) is installed in the nacelle at the top of the tower. Due to the limited space inside the wind turbine tower, ladders are vertically arranged along the inner wall, a space-saving design that meets vertical access requirements. When equipment malfunctions or requires regular maintenance, workers must climb the ladders to the top to perform the work.

[0003] Currently, when workers need to climb the ladder inside the wind turbine tower to work at the top, they must wear safety belts. As they climb up and down, they need to frequently adjust the connection position between the safety belt's buckle and the ladder, which affects the workers' climbing efficiency. Some workers also find this cumbersome and do not connect the safety belt to the ladder during the climb, resulting in significant safety risks. Therefore, we propose a safety protection device for the ladder inside the wind turbine tower. Utility Model Content

[0004] The purpose of this utility model is to provide a safety protection device for the internal ladder of a wind turbine tower. It has the advantages of being easy to use and having good safety performance. It solves the problem that when workers need to climb the internal ladder of a wind turbine tower to work at the top, they need to wear a safety belt and frequently adjust the connection position of the safety belt buckle hook to the ladder as they climb up and down.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety protection device for the internal ladder of a wind turbine tower, comprising:

[0006] The tower body has support frames fixedly connected to both ends of the inner wall of the tower body, and a ladder body is fixedly installed at the right end of the support frame.

[0007] The guide seat has limit grooves on both the front and rear sides of one end, a guide groove in the middle of the left side of the guide seat, and multiple equally spaced arc-shaped locking grooves on both sides inside the guide groove.

[0008] The U-shaped moving block has a connecting rod at its middle end, a connecting member movably connected to the outer surface of the connecting rod, an arc-shaped connecting block movable in the guide groove fixedly connected to the top of the connecting member, a positioning rod adapted to the arc-shaped locking groove fixedly connected to one end of the arc-shaped connecting block, a connecting screw threaded to the left end of the connecting member, and a safety belt body fixedly connected to the outer surface of the upper end of the connecting screw.

[0009] Preferably, the guide seat is fixedly connected to the middle of the left side of the ladder body.

[0010] Preferably, both ends of the U-shaped moving block slide within the limiting groove.

[0011] Preferably, a rack is fixedly installed on the right side inside the guide seat, and a movable seat is slidably connected to the outer surface of the guide seat, with the movable seat located below the U-shaped movable block.

[0012] Preferably, an electromagnetic brake motor is fixedly installed at the rear end of the top of the movable seat, and the output end of the electromagnetic brake motor is fixedly connected to a drive gear that meshes with a rack, and the drive gear is located inside the movable seat.

[0013] Preferably, a support seat plate is fixedly connected to the left side of the movable seat, and foot pedals are fixedly connected to both the front and rear ends of the bottom of the movable seat.

[0014] Preferably, a control switch is fixedly installed on the front of the movable base, and the output terminal of the control switch is electrically connected to the input terminal of the electromagnetic brake motor through a wire.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention can form a three-point stable structure based on gravity assistance in the event of an accidental fall by a worker, which can promptly prevent the worker from falling and ensure the worker's safety. Moreover, it is convenient to use because there is no need to frequently adjust the connection position of the safety belt buckle hook and the ladder during the climbing process. Attached Figure Description

[0017] Figure 1 This is a first-view structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention from a second perspective;

[0019] Figure 3 This is a schematic diagram of the mating structure between the ladder body and the guide seat of this utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation structure between the movable seat and the foot pedal of this utility model;

[0021] Figure 5 This is a schematic diagram of the cooperation structure between the U-shaped moving block and the seat belt body of this utility model;

[0022] Figure 6 This is a schematic diagram of the guide seat structure of this utility model.

[0023] In the diagram: 1. Tower body; 101. Support frame; 102. Ladder body; 2. Guide seat; 201. Arc-shaped locking groove; 202. Rack; 203. Drive gear; 204. Electromagnetic brake motor; 205. Moving seat; 206. Guide slide; 207. Limit slide; 208. Support plate; 209. Foot pedal; 3. U-shaped moving block; 301. Connecting rod; 302. Connector; 303. Safety belt body; 304. Connecting screw; 305. Arc-shaped connecting block; 306. Positioning rod; 4. Control switch. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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 do not 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The tower body 1, support frame 101, ladder body 102, guide seat 2, arc-shaped locking groove 201, rack 202, drive gear 203, electromagnetic brake motor 204, moving seat 205, guide slide 206, limit slide 207, support seat plate 208, foot pedal 209, U-shaped moving block 3, connecting rod 301, connector 302, safety belt body 303, connecting screw 304, arc-shaped connecting block 305, positioning rod 306, and control switch 4 components in this application are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0028] Example 1

[0029] Please see Figures 1-6 As shown, this utility model provides a technical solution: a safety protection device for the internal ladder of a wind turbine tower, comprising:

[0030] The tower body 1 has support frames 101 fixedly connected to both ends of the inner wall of the tower body 1, and a ladder body 102 is fixedly installed on the right end of the support frame 101.

[0031] The guide seat 2 has a limit groove 207 on both the front and rear sides of one end, and a guide groove 206 is provided at the middle of the left side of the guide seat 2. Multiple arc-shaped locking grooves 201 are provided on both sides inside the guide groove 206.

[0032] U-shaped moving block 3, with a connecting rod 301 at the middle end of the U-shaped moving block 3, and a connecting member 302 movably connected to the outer surface of the connecting rod 301. An arc-shaped connecting block 305 movable in the guide groove 206 is fixedly connected to the top of the connecting member 302. A positioning rod 306 adapted to the arc-shaped locking groove 201 is fixedly connected to one end of the arc-shaped connecting block 305. A connecting screw 304 is threaded to the left end of the connecting member 302. A safety belt body 303 is fixedly connected to the outer surface of the upper end of the connecting screw 304.

[0033] The guide seat 2 is fixedly connected to the middle of the left side of the ladder body 102, and both ends of the U-shaped moving block 3 slide on the inner side of the limiting slide groove 207.

[0034] This technical solution: By setting up the support frame 101, the ladder body 102 can be fixedly installed. When workers need to climb the ladder inside the wind turbine tower to work at the top, they enter the space between the ladder body 102 and the inner wall of the tower body 1. At this time, the climbing space is limited. When workers need to recover their strength, they can step on the ladder body 102 for support and lean against the inner wall of the tower body 1 to rest and recover their strength. Before climbing, workers need to screw the connecting screws 304 at both ends of the safety belt 303 onto the left end of the connector 302. Then, when workers climb upwards, the safety belt 303 will cause the connector 302 to rotate and tilt slightly upwards around the connecting rod 301. With the movement of the connector 302, the arc-shaped connecting block 305 and the positioning rod 306 will move synchronously. At this time, the connector 302 can drive the U-shaped movement. Block 3 slides inside the limiting groove 207, and the arc-shaped connecting block 305 moves inside the guide groove 206. In the event of an accidental fall, the safety belt 303 will cause the connecting piece 302 to tilt downwards to the maximum extent with the connecting rod 301 as the center. As the connecting piece 302 moves, the arc-shaped connecting block 305 and the positioning rod 306 will move synchronously. At this time, the positioning rod 306 can enter the corresponding arc-shaped locking groove 201. At this time, a three-point stable structure is formed between the worker and the safety belt 303, between the hinge point of the connecting piece 302 and the connecting rod 301, and between the positioning rod 306 entering the arc-shaped locking groove 201 after the arc-shaped connecting block 305 is flipped. This can prevent the worker from falling in time and ensure the worker's safety. Moreover, there is no need to frequently adjust the connection position of the safety belt buckle and the ladder during the climbing process, making it convenient to use.

[0035] Example 2

[0036] Based on Embodiment 1, this utility model is as follows: Figures 1-6 As shown, a rack 202 is fixedly installed on the right side inside the guide seat 2. A movable seat 205 is slidably connected to the outer surface of the guide seat 2, and the movable seat 205 is located below the U-shaped movable block 3. An electromagnetic brake motor 204 is fixedly installed at the rear end of the top of the movable seat 205. A drive gear 203 that meshes with the rack 202 is fixedly connected to the output end of the electromagnetic brake motor 204, and the drive gear 203 is located inside the movable seat 205. A support plate 208 is fixedly connected to the left side of the movable seat 205. Foot pedals 209 are fixedly connected to both the front and rear ends of the bottom of the movable seat 205. A control switch 4 is fixedly installed on the front of the movable seat 205, and the output end of the control switch 4 is electrically connected to the input end of the electromagnetic brake motor 204 through a wire.

[0037] This technical solution: By setting up the movable seat 205, when workers need to climb the ladder inside the wind turbine tower to work at the top, an electric lifting method can be selected. After the worker sits on the top of the support seat 208 and places their feet on the top of the foot pedal 209, they need to screw the connecting screws 304 at both ends of the safety belt 303 onto the left end of the connector 302. Then, when the control switch 4 is turned on, the electromagnetic brake motor 204 drives the drive gear 203 to rotate. With the assistance of the meshing rack 202, the movable seat 205 can be driven to move along the guide rail. The height of seat 2 can be increased, thereby improving the work efficiency of the staff and reducing the physical exertion of the staff. If the electric lifting method is damaged, the staff can climb by themselves. The three-point stability structure formed between the staff and the safety belt body 303, between the hinge point of the connecting piece 302 and the connecting rod 301, and between the positioning rod 306 entering the arc-shaped locking groove 201 after the arc-shaped connecting block 305 is flipped, can ensure the safety of the staff whether they use self-climbing or electric lifting.

[0038] It should be noted that the electromagnetic brake motor 204 and control switch 4 used in this device can be purchased directly from the market. At the same time, the connection methods and electrical connections of each component adopt mature conventional methods in the existing technology, so they will not be described in detail here.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A safety protection device for the internal ladder of a wind turbine tower, characterized in that, include: The tower body (1) has a support frame (101) fixedly connected to both ends of the inner wall of the tower body (1), and a ladder body (102) is fixedly installed on the right end of the support frame (101). The guide seat (2) has a limit groove (207) on both the front and rear sides of one end, and a guide groove (206) is provided at the middle of the left side of the guide seat (2). Multiple arc-shaped locking grooves (201) are provided on both sides inside the guide groove (206). A U-shaped moving block (3) is provided with a connecting rod (301) at the middle end of the U-shaped moving block (3). A connecting member (302) is movably connected to the outer surface of the connecting rod (301). An arc-shaped connecting block (305) that moves in the guide groove (206) is fixedly connected to the top of the connecting member (302). A positioning rod (306) that is adapted to the arc-shaped locking groove (201) is fixedly connected to one end of the arc-shaped connecting block (305). A connecting screw (304) is threaded to the left end of the connecting member (302). A safety belt body (303) is fixedly connected to the outer surface of the upper end of the connecting screw (304).

2. The safety protection device for the internal ladder of the wind turbine tower according to claim 1, characterized in that: The guide seat (2) is fixedly connected to the middle of the left side of the ladder body (102).

3. The safety protection device for the internal ladder of the wind turbine tower according to claim 1, characterized in that: Both ends of the U-shaped moving block (3) slide on the inner side of the limiting groove (207).

4. The safety protection device for the internal ladder of the wind turbine tower according to claim 1, characterized in that: A rack (202) is fixedly installed on the right side inside the guide seat (2), and a movable seat (205) is slidably connected to the outer surface of the guide seat (2), and the movable seat (205) is located below the U-shaped movable block (3).

5. The safety protection device for the internal ladder of the wind turbine tower according to claim 4, characterized in that: An electromagnetic brake motor (204) is fixedly installed at the rear end of the top of the movable seat (205). The output end of the electromagnetic brake motor (204) is fixedly connected to a drive gear (203) that meshes with the rack (202), and the drive gear (203) is located inside the movable seat (205).

6. The safety protection device for the internal ladder of the wind turbine tower according to claim 5, characterized in that: A support plate (208) is fixedly connected to the left side of the movable seat (205), and foot pedals (209) are fixedly connected to both the front and rear ends of the bottom of the movable seat (205).

7. The safety protection device for the internal ladder of the wind turbine tower according to claim 6, characterized in that: A control switch (4) is fixedly installed on the front of the movable base (205), and the output end of the control switch (4) is electrically connected to the input end of the electromagnetic brake motor (204) through a wire.

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