Steel tube tower safety ladder

Abstract

The application discloses a steel pipe tower safety ladder, and relates to the technical field of steel pipe tower ladders, and has the technical scheme as follows: a rod body, a fixing frame arranged on the rod body, foot plates arranged on the fixing frame at equal intervals and used for staff to climb, a slow descent mechanism arranged on the rod body and used for providing a safety belt mounting point for the staff and providing a buffer when the staff falls, and a transmission mechanism arranged on the rod body and used for driving the foot plates to drive the slow descent mechanism. The safety ladder can provide a safety belt mounting point which moves synchronously with the staff climbing, and the staff does not need to continuously adjust the safety belt mounting position, so that the staff can conveniently climb, and the safety belt can help the staff to buffer and fall when the staff falls by accident, so that the safety of the staff is ensured.

Description

Technical Field

[0001] This invention relates to the field of steel pipe tower climbing ladder technology, specifically to a safe climbing ladder for steel pipe towers. Background Technology

[0002] A steel pipe tower ladder is an auxiliary structure that facilitates workers to climb up the steel pipe tower for maintenance. However, during the climb, workers need to adjust the position of their safety harness to ensure safety. This constant adjustment reduces climbing efficiency and increases the risk of falling when changing the position of the safety harness.

[0003] In view of this, a design or technical improvement is proposed to solve the above problems.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a safe ladder for steel pipe towers.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A safety ladder for steel pipe towers includes a pole and also includes:

[0008] The fixing frame is installed on the pole.

[0009] Footboards are evenly distributed on a fixed frame for workers to climb.

[0010] The descent control mechanism, mounted on the pole, provides a safety harness attachment point for workers and cushions their fall.

[0011] The transmission mechanism, mounted on the rod, is used to drive the footplate to the slow-descent mechanism.

[0012] Furthermore, the descent mechanism includes a movable groove on the rod, a partition plate disposed within the movable groove, and a piston assembly that slides within the movable groove.

[0013] Furthermore, the partition plate divides the interior of the movable groove into a resistance chamber and a movable chamber. The piston assembly includes a resistance piston block that slides in a sealed manner within the resistance chamber and a driven slider that slides in the movable chamber. The upper surfaces of the resistance piston block and the driven slider are connected by a first steel wire rope that is movably connected to the movable groove. A reversing wheel is rotatably mounted on the rod body, and the first steel wire rope is sleeved on the reversing wheel.

[0014] Furthermore, a limiting slot is provided on the side wall of the active cavity, and a hook ring is provided on the driven slider to limit sliding within the limiting slot.

[0015] Furthermore, the transmission mechanism includes a winding assembly for driving the piston assembly and a pedaling assembly for driving the winding assembly.

[0016] Furthermore, the winding assembly includes multiple sets of bearing frames evenly distributed on the rod body, a first movable shaft rotatably disposed within the bearing frames, a winding drum disposed at the lower end of the first movable shaft, and a second steel wire rope with one end wound on the winding drum and the other end fixed to the lower surface of the resistance piston block.

[0017] Furthermore, the pedal assembly includes a second movable shaft rotatably mounted on a fixed frame, a ratchet mounted on the second movable shaft, a first bevel tooth mounted on the second movable shaft, second bevel teeth evenly distributed on the first movable shaft and meshing with the first bevel tooth, and a rack mounted on the lower surface of the footplate and adapted to the ratchet. The fixed frame is provided with a limit plate, and the lower surface of the footplate is provided with a limit slide that movably connects with the limit plate.

[0018] Furthermore, the rack frame includes a movable slot disposed on the lower surface of the foot plate, a rack rod that slides within the movable slot and is adapted to the ratchet, and a first spring with one end disposed on the inner wall of the movable slot and the other end disposed on the rack rod. A second spring is disposed between the limiting frame plate and the limiting slide.

[0019] Furthermore, the rod body is also provided with a rope-attaching groove block for attaching a second steel wire rope.

[0020] Compared with existing technologies, the advantages of this solution are: this safety ladder can provide a safety belt attachment point that moves synchronously with the worker as they climb, eliminating the need for the worker to constantly adjust the safety belt attachment position, thus providing a convenient climbing experience. At the same time, it can also help cushion the worker's descent in the event of an accidental fall, thereby ensuring the worker's safety. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 This is a three-dimensional schematic diagram of the pedal component in this invention;

[0024] Figure 3 This is a three-dimensional schematic diagram of the footboard in this invention;

[0025] Figure 4 This is a schematic diagram of the engagement between the rack and pinion and the ratchet in this invention;

[0026] Figure 5 This is a disassembly diagram of the rack frame in this invention;

[0027] Figure 6 This is a schematic diagram of the descent mechanism in this invention;

[0028] Figure 7 This is a cross-sectional schematic diagram of the descent mechanism in this invention;

[0029] Figure 8 This is the present invention. Figure 1 Enlarged view of point A in the middle;

[0030] Figure 9 This is the present invention. Figure 1 Enlarged diagram of point B in the middle.

[0031] In the diagram: 1. Rod body; 2. Fixed frame; 21. Foot plate; 3. Movable groove; 31. Divider plate; 32. Resistance chamber; 33. Movable chamber; 34. Resistance piston block; 35. Driven slider; 36. First wire rope; 37. Reversing wheel; 4. Limiting groove; 41. Hook ring; 5. Bearing bracket; 51. First movable shaft; 52. Winding drum; 53. Second wire rope; 6. Second movable shaft; 61. Ratchet; 62. First bevel tooth; 63. Second bevel tooth; 64. Limiting frame plate; 65. Limiting slide; 7. Movable box groove; 71. Rack rod; 72. First spring; 73. Second spring; 8. Rope-laying groove block. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1-9The steel pipe tower safety ladder shown includes a pole 1 and a fixed frame 2 mounted on the pole 1; footboards 21 are evenly distributed on the fixed frame 2 for workers to climb; a descent mechanism is mounted on the pole 1 to provide a safety belt attachment point for workers and to provide cushioning in case of a fall; and a transmission mechanism is mounted on the pole 1 to drive the footboards 21 to the descent mechanism. This ladder device uses the descent mechanism to provide a safety belt attachment point for workers, and the stepping action of workers during climbing causes the transmission mechanism to move the attachment point of the descent mechanism accordingly. This eliminates the need for workers to continuously change the safety belt attachment position, providing continuous safety protection and improving climbing efficiency.

[0034] In one embodiment, the descent mechanism includes a movable groove 3 on a rod 1, a partition plate 31 within the movable groove 3, and a piston assembly that slides within the movable groove 3. The partition plate 31 divides the interior of the movable groove 3 into a resistance chamber 32 and a movable chamber 33. The piston assembly includes a resistance piston block 34 that slides and seals within the resistance chamber 32 and a driven slider 35 that slides within the movable chamber 33. The upper surfaces of the resistance piston block 34 and the driven slider 35 are connected by a first steel wire rope 36 that is movably connected to the movable groove 3. A reversing wheel 37 is rotatably mounted on the rod 1, and the first steel wire rope 36 is sleeved on the reversing wheel 37. A limit slot 4 is formed on the side wall of the movable chamber 33, and a hook ring 41 that slides and is limited within the limit slot 4 is provided on the driven slider 35. The hook ring 41 provides safety for the worker. The attachment points of the harness, the resistance piston block 34 and the driven slider 35 are provided with a certain friction between them and the inner walls of the resistance cavity 32 and the movable cavity 33, thereby initially increasing their sliding resistance in the movable groove 3. At the same time, the resistance cavity 32 is sealed inside, and a certain gap is left at the connection point of the first wire rope 36, further increasing the sliding resistance of the resistance piston block 34. During the climbing process, the driven slider 35 moves upward synchronously with the worker, without the need to change the attachment position of the safety harness. During the upward movement of the driven slider 35, the resistance piston block 34 will slide downward. When the worker falls, it pulls the driven slider 35 downward and the resistance piston block 34 slides upward. Due to the resistance settings of the resistance piston block 34 and the driven slider 35, the worker can descend slowly, thereby ensuring their safety.

[0035] In one embodiment, the transmission mechanism includes a winding assembly for driving the piston assembly and a pedaling assembly for driving the winding assembly. The winding assembly includes multiple sets of bearing frames 5 evenly distributed on the rod body 1, a first movable shaft 51 rotatably disposed within the bearing frames 5, a winding drum 52 disposed at the lower end of the first movable shaft 51, and a second steel wire rope 53 with one end wound around the winding drum 52 and the other end fixed to the lower surface of the resistance piston block 34. The pedaling assembly includes a second movable shaft 6 rotatably disposed on the fixed frame 2, a ratchet 61 disposed on the second movable shaft 6, a first bevel gear 62 disposed on the second movable shaft 6, and a first bevel gear 62 evenly distributed on the first movable shaft 51 and connected to the first... The footplate 2 has a second bevel tooth 63 that meshes with the bevel tooth 62, and a rack frame that is provided on the lower surface of the footplate 21 and adapted to the ratchet 61. A limit plate 64 is provided on the fixed frame 2. A limit slide 65 that movably passes through the limit plate 64 is provided on the lower surface of the footplate 21. The rack frame includes a movable groove 7 provided on the lower surface of the footplate 21, a rack rod 71 that slides within the movable groove 7 and is adapted to the ratchet 61, and a first spring 72 with one end provided on the inner wall of the movable groove 7 and the other end provided on the rack rod 71. A second spring 73 is provided between the limit plate 64 and the limit slide 65. When the footplate 21 is in the initial position, the rack rod 71 does not mesh with the ratchet 61. During the climb, the worker steps on the upper surface of the footplate 21, causing it to move downwards. This downward movement of the footplate 21 drives the ratchet 61 via the rack and pinion 71, which in turn drives the first bevel gear 62 to rotate. The first bevel gear 62 then drives the first movable shaft 51 via the second bevel gear 63, causing the first movable shaft 51 to rotate. This rotation of the lower winding drum 52 winds up the second wire rope 53, pulling the resistance piston block 34 downwards. The driven slider 35 then moves upwards with the worker, ensuring synchronized movement during the climb. After being stepped on, the footplate 21 will automatically return to its original position via the second spring 73, thus facilitating continued climbing. As the footplate 21 rises, driving the movable box groove 7 upward, the rack 71 will engage with the ratchet 61, retracting into the movable box groove 7. When the rack 71 and ratchet 61 become misaligned, the rack 71 will automatically return to its original position under the action of the first spring 72, without contacting the ratchet 61, thus ensuring that the second movable shaft 6 can rotate freely. This allows the driven slider 35 to move downward directly during the worker's descent, providing a certain degree of cushioning and ensuring a slow descent, thereby enhancing safety.

[0036] In one embodiment, the rod body 1 is also provided with a rope-overlapping groove block 8 for overlapping the second wire rope 53. In order to ensure that the second wire rope 53 will not rub against the surface of the rod body 1 during the winding process of the winding drum 52, causing material wear, the rope-overlapping groove block 8 is provided to overlap the second wire rope 53, so that it can slide on the rope-overlapping groove block 8, thereby improving the durability of the second wire rope 53.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A safety ladder for steel pipe towers, comprising a pole (1), characterized in that, include: A fixing frame (2) is installed on the rod (1); Footboards (21) are evenly distributed on the fixed frame (2) for workers to climb; A descent mechanism, mounted on the pole (1), is used to provide a safety belt attachment point for workers and to provide cushioning in the event of a fall; The transmission mechanism is set on the rod (1) and is used to drive the foot plate (21) to the slow-down mechanism; The descent mechanism includes a movable groove (3) on the rod (1), a partition plate (31) in the movable groove (3), and a piston assembly that slides in the movable groove (3); The piston assembly includes a resistance piston block (34) that slides sealed within a resistance chamber (32) and a driven slider (35) that slides within a movable chamber (33). The upper surfaces of the resistance piston block (34) and the driven slider (35) are connected by a first wire rope (36) that is movably threaded through the movable groove (3). The transmission mechanism includes a winding assembly for driving the piston assembly and a pedaling assembly for driving the winding assembly. The winding assembly includes a winding drum (52) and a second wire rope (53) with one end wound on the winding drum (52) and the other end fixed to the lower surface of the resistance piston block (34). As the footplate (21) moves downward, it drives the winding drum (52) to rotate. The winding drum (52) winds up the second wire rope (53) by rotating, thereby pulling the resistance piston block (34) down. The driven slider (35) moves up with the staff to ensure the synchronous activity effect during the climbing process.

2. The safety ladder for steel pipe towers according to claim 1, characterized in that: The partition plate (31) divides the interior of the movable groove (3) into a resistance cavity (32) and a movable cavity (33). A reversing wheel (37) is rotatably mounted on the rod body (1), and the first wire rope (36) is sleeved on the reversing wheel (37).

3. The safety ladder for steel pipe towers according to claim 2, characterized in that: The active cavity (33) has a limiting slot (4) on its side wall, and the driven slider (35) is provided with a hook ring (41) that is limited to sliding within the limiting slot (4).

4. The safety ladder for steel pipe towers according to claim 1, characterized in that: The winding assembly also includes multiple sets of bearing frames (5) evenly distributed on the rod body (1), a first movable shaft (51) rotatably disposed within the bearing frames (5), and the winding drum (52) disposed at the lower end of the first movable shaft (51).

5. The safety ladder for steel pipe towers according to claim 1, characterized in that: The pedal assembly includes a second movable shaft (6) rotatably mounted on a fixed frame (2), a ratchet (61) mounted on the second movable shaft (6), a first bevel tooth (62) mounted on the second movable shaft (6), a second bevel tooth (63) evenly distributed on the first movable shaft (51) and meshing with the first bevel tooth (62), and a rack mounted on the lower surface of the footplate (21) and adapted to the ratchet (61). A limit plate (64) is provided on the fixed frame (2), and a limit slide (65) that movably connects with the limit plate (64) is provided on the lower surface of the footplate (21).

6. The safety ladder for steel pipe towers according to claim 5, characterized in that: The rack frame includes a movable box groove (7) disposed on the lower surface of the foot plate (21), a rack rod (71) that slides within the movable box groove (7) and is adapted to the ratchet (61), and a first spring (72) with one end disposed on the inner wall of the movable box groove (7) and the other end disposed on the rack rod (71). A second spring (73) is disposed between the limiting frame plate (64) and the limiting slide (65).

7. The safety ladder for steel pipe towers according to claim 1, characterized in that: The rod (1) is also provided with a rope-attaching groove (8) for attaching the second steel wire rope (53).

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