Assembled safety crawling ladder for wind power tower drum

Abstract

The utility model discloses an assembled safety crawling ladder for a wind power tower drum, and belongs to the technical field of auxiliary operation and maintenance equipment for the wind power tower drum. The device comprises two side baffles, a foot rest lever is mounted between the side baffles; an anti-falling guide rail is mounted on the front side of the foot rest lever; a plurality of groups of through holes are formed in the corresponding positions of the two side baffles; the two ends of the foot rest lever are inserted into the through holes; a pressure bearing shaft is mounted in the foot rest lever; positioning clamping plates are mounted on the two end sides of the pressure bearing shaft; the other end of the positioning clamping plate is connected to a wall connecting piece on the inner wall of the tower drum; the upper and lower end sides of the side baffle plate are respectively provided with a plug with a positioning hole and a socket; the upper and lower adjacent side baffles are mounted through bolt assemblies; a plurality of strip-shaped holes are formed in the back of the anti-falling guide rail; the upper and lower adjacent anti-falling guide rails are detachably connected through a connecting plate; the utility model solves the problems that the connection between the current assembly type safety crawling ladder and the tower drum is not reliable enough, and the overall structure is not stable enough.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary operation and maintenance equipment for wind turbine towers, specifically to an assembled safety ladder for wind turbine towers. Background Technology

[0002] To maintain wind turbine towers, safety ladders with fall arrest rails are typically installed inside the tower. Currently, most safety ladders are assembled structures, but these ladders often suffer from unreliable connections with the wall ties installed on the inner wall of the tower, resulting in an unstable overall structure. This is the main problem that needs to be solved. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an assembled safety ladder for wind turbine towers, so as to solve the problems that the connection between the current assembled safety ladder and the tower is not reliable enough and the overall structure is not stable enough.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] An assembled safety ladder for wind turbine towers includes two opposing side panels; several foot pedals are installed between the side panels; fall arrestor rails are installed on the front of the foot pedals; the fall arrestor rails are parallel to the side panels; several sets of through holes are opened at corresponding positions on the two side panels; both ends of the foot pedals are inserted into the through holes; the foot pedals are all made of hollow steel pipes; a pressure bearing shaft is detachably installed in at least one foot pedal; both ends of the pressure bearing shaft protrude from the through holes; positioning clamps are detachably installed on both ends of the pressure bearing shaft; the other end of the positioning clamps is connected to a wall tie on the inner wall of the tower; plugs and sockets are respectively provided on the upper and lower ends of the side panels; positioning holes are opened at the plugs and sockets, and adjacent upper and lower side panels can be detachably installed at the positioning holes via bolt assemblies; several strip holes are opened on the back of the fall arrestor rails; adjacent upper and lower fall arrestor rails are detachably connected by connecting plates.

[0006] Preferably, the side baffle is made of hollow square steel; a sealing plate is provided on the top of the side baffle, and the plug is installed on the sealing plate; the plug is the bottom of the inner cavity of the side baffle.

[0007] Preferably, it also includes several clamps; the clamps are used to fasten the fall arrestor rail to the foot pedal; the clamp is a folded plate component spliced ​​from a U-shaped plate and a straight plate; the notch of the clamp is inserted from the back of the foot pedal, and a strip hole is also opened on the straight plate at the position opposite to the fall arrestor rail; the fall arrestor rail is installed through the bolt assembly at the strip hole.

[0008] Preferably, the side baffles and the fall arresting rails are of equal length; the side baffles and the fall arresting rails are installed in a staggered manner, and the upper and lower fall arresting rails are connected at the corresponding positions of the side baffles.

[0009] Preferably, there are two positioning clamps, each positioning clamp including a Y-shaped folded plate; the forked part of the Y-shaped folded plate bends toward the side baffle; a rear connecting plate is provided at the tail end of the folded plate, and a front connecting plate is provided at its two front ends; positioning holes are provided on both the rear connecting plate and the front connecting plate; the rear connecting plate is used to connect to the wall tie on the inner wall of the tower; the two ends of the pressure bearing shaft are installed by passing through the positioning holes of the front connecting plate.

[0010] Furthermore, the positioning clamp is located in the middle of the side baffle, and the two forks of the Y-shaped fold plate on the positioning clamp are separated by at least one foot pedal.

[0011] Preferably, the protruding end of the pressure bearing shaft is a threaded section, which is connected to the positioning clamp plate through a threaded engagement.

[0012] The beneficial effects of this utility model are reflected in the following aspects:

[0013] 1. The pressure-bearing shaft of this utility model passes through the hollow foot rod and is connected to the positioning clamp, forming a set of rigid force transmission paths. Compared with the traditional method that only relies on the side baffle and the wall tie for single-point connection, this structure transmits the vertical and horizontal loads borne by the ladder evenly to the wall tie of the inner wall of the tower through the pressure-bearing shaft, avoiding local stress concentration and improving the pull-out and shear resistance of the connection node.

[0014] 2. The positioning clamp adopts a Y-shaped folded plate design. The bifurcation bends towards the side baffle and spans at least one foot bar interval to form a stable triangular structure. It is fixed to the wall tie with the rear connecting plate and the front connecting plate is positioned by a three-dimensional anchoring method with a bearing shaft, which improves the load-bearing capacity of the connection point and can effectively resist the fatigue load caused by tower vibration.

[0015] 3. The plugs and sockets at the upper and lower ends of the side baffles are connected with bolts to form a dual locking mechanism of plug-in and bolt fastening. Compared with the traditional simple bolt connection, this structure can effectively improve the centering and positioning accuracy, reduce verticality deviation, and significantly reduce the longitudinal bending deformation of the ladder.

[0016] 4. By installing the fall arrestor rails and side baffles at the same length and offset, and connecting the upper and lower sections of the fall arrestor rails with connecting plates at the middle position of the side baffles, a spatial truss structure of side baffles, foot rods and fall arrestor rails is formed, thereby improving the rigidity of the ladder and effectively resisting the lateral force generated when maintenance personnel climb.

[0017] 5. All steel components are made of shaped steel, which effectively reduces the overall weight. Their simple structure simplifies the processing technology and facilitates quick on-site positioning and assembly.

[0018] 6. Improved equipment interchangeability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention in an embodiment;

[0020] Figure 2 This is a three-dimensional structural diagram of the junction of the two anti-fall guide rails in this embodiment;

[0021] Figure 3 This is a three-dimensional structural diagram of the clamp locking the foot pedal on the anti-fall guide rail in this embodiment;

[0022] Figure 4 This is a three-dimensional structural diagram of the chuck in this embodiment;

[0023] Figure 5 This is a schematic diagram showing the installation positions of the two anti-fall guide rails relative to a set of side baffles in this embodiment;

[0024] Figure 6 This is a disassembly diagram of the utility model device in this embodiment, excluding the chuck;

[0025] Figure 7 This is a schematic diagram of the installation of the upper and lower side baffles in this embodiment;

[0026] Explanation of reference numerals in the attached drawings: 1. Side baffle, 2. Foot pedal, 3. Anti-fall guide rail, 4. Through hole, 5. Pressure bearing shaft, 6. Positioning clamp, 7. Positioning hole, 8. Clamp, 61. Y-shaped folding plate, 62. Rear connecting plate, 63. Front connecting plate. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0028] Example:

[0029] Reference Figure 1This embodiment provides an assembled safety ladder for wind turbine towers; it includes two opposing side panels 1; a plurality of footrests 2 are installed between the side panels 1; a fall arrestor rail 3 is installed on the front side of the footrests 2; the fall arrestor rail 3 is arranged parallel to the side panels 1; a plurality of through holes 4 are opened at corresponding positions on the two side panels 1; both ends of the footrests 2 are inserted into the through holes; the footrests 2 are all made of hollow steel pipes; a pressure bearing shaft 5 is detachably installed in at least one footrest 2; the two ends of the pressure bearing shaft 5 are... The ends of the shaft 5 protrude from the through holes 4 respectively; positioning clamps 6 are detachably installed on both ends of the bearing shaft 5; the other end of the positioning clamps 6 is connected to the wall tie on the inner wall of the tower; plugs and sockets that cooperate with each other are provided on the upper and lower ends of the side baffles 1 respectively; positioning holes 7 are opened at the positions of the plugs and sockets, and the upper and lower adjacent side baffles can be detachably installed at the positioning holes 7 through bolt assemblies; several strip holes are opened on the back of the fall arrestor rail 3; the upper and lower adjacent fall arrestor rails are detachably connected by connecting plates.

[0030] The side baffle 1 is made of hollow square steel; a sealing plate is provided on the top of the side baffle 1, and the plug is installed on the sealing plate; the plug is the bottom of the inner cavity of the side baffle 1.

[0031] It also includes several clamps 8; the clamps 8 are used to fasten the fall arrestor rail 3 onto the foot pedal 2; the clamp 8 is a folded plate component made of U-shaped plate and straight plate splicing; the notch of the clamp 8 is inserted from the back of the foot pedal 2, and there is also a strip hole on the straight plate at the position opposite to the fall arrestor rail; the fall arrestor rail 3 is installed through the bolt assembly at the strip hole.

[0032] The side baffle 1 and the fall arrestor rail 3 are of the same length; the side baffle 1 and the fall arrestor rail 3 are installed in a staggered manner, and the upper and lower fall arrestor rails 3 are connected at the corresponding positions of the side baffle 1.

[0033] There are two positioning clamps 6. Each positioning clamp 6 includes a Y-shaped folded plate 61. The forked part of the Y-shaped folded plate 61 bends toward the side baffle 1. A rear connecting plate 62 is provided at the tail end of the folded plate 61, and a front connecting plate 63 is provided at its two front ends. Positioning holes are provided on both the rear connecting plate 62 and the front connecting plate 63. The rear connecting plate 62 is used to connect to the wall tie on the inner wall of the tower. The two ends of the pressure bearing shaft 5 are installed by passing through the positioning holes of the front connecting plate 63.

[0034] The positioning clamp 6 is located in the middle of the side baffle 1, and the two forks of the Y-shaped folding plate 61 on the positioning clamp 6 are separated by at least one foot pedal 2.

[0035] The protruding end of the pressure bearing shaft 5 is a threaded section, which is connected to the positioning clamp 6 through a threaded fit.

[0036] When assembling this safety ladder, you can refer to the following steps:

[0037] First, the side panels 1, foot pedals 2, and fall arrestor rails 3 of a single ladder module are initially connected using clamps 8 and bolt assemblies. Then, the adjacent upper and lower side panels 1 are pre-positioned by inserting plugs into the sockets, aligning with the positioning holes 7, and then tightened with bolt assemblies to ensure the verticality and centering accuracy of the side panel connection. Next, the bearing shaft 5 is inserted into the pre-set foot pedals 2, so that both ends of the bearing shaft extend out of the through holes 4 of the side panels. Then, the front connecting plate 63 of the positioning clamp 6 is fitted into the threaded section of the bearing shaft and fixed with nuts. Finally, the rear connecting plate 62 of the positioning clamp 6 is bolted to the wall ties on the inner wall of the tower to complete the rigid anchoring of the ladder to the tower structure. The upper and lower fall arrestor rails 3 are connected at the strip-shaped holes in the middle of the side panels through connecting plates and bolt assemblies to form a continuous fall arrestor protection structure.

Claims

1. An assembled safety ladder for a wind power tower, comprising two oppositely arranged side fences (1); a plurality of footstep rods (2) are installed between the side fences (1); a fall-preventing guide rail (3) is installed on the front side of the footstep rods (2); the fall-preventing guide rail (3) is arranged in parallel with the side fences (1); characterized in that: Several sets of through holes (4) are opened at corresponding positions on the two side baffles (1); both ends of the foot pedal (2) are inserted into the through holes for installation; the foot pedals (2) are all made of hollow steel pipes; a pressure bearing shaft (5) is detachably installed in at least one foot pedal (2); both ends of the pressure bearing shaft (5) pass through the through holes (4); positioning clamps (6) are detachably installed on both ends of the pressure bearing shaft (5); the other end of the positioning clamps (6) is connected to the wall tie on the inner wall of the tower; plugs and sockets that cooperate with each other are provided on the upper and lower ends of the side baffles (1); positioning holes (7) are opened at the positions of the plugs and sockets, and the upper and lower adjacent side baffles can be detachably installed at the positioning holes (7) through bolt assemblies; several strip holes are opened on the back of the fall arrestor rail (3); the upper and lower adjacent fall arrestor rails are detachably connected by connecting plates.

2. The assembled safety ladder for wind turbine towers according to claim 1, characterized in that: The side baffle (1) is made of hollow square steel; a sealing plate is provided on the top of the side baffle (1), and the plug is installed on the sealing plate; the plug is the bottom of the inner cavity of the side baffle (1).

3. The assembled safety ladder for wind turbine towers according to claim 1, characterized in that: It also includes several clamps (8); the clamps (8) are used to fasten the fall arrestor rail (3) onto the foot pedal (2); the clamps (8) are a folded plate component made of U-shaped plate and straight plate splicing; the notch of the clamps (8) is inserted from the back of the foot pedal (2), and there is also a strip hole on the straight plate at the position opposite to the fall arrestor rail; the fall arrestor rail (3) is installed through the bolt assembly at the strip hole.

4. The assembled safety ladder for wind turbine towers according to claim 1, characterized in that: The side baffle (1) and the fall arrestor rail (3) are of the same length; the side baffle (1) and the fall arrestor rail (3) are installed in a staggered manner, and the upper and lower fall arrestor rails (3) are connected at the corresponding positions of the side baffle (1).

5. The assembled safety ladder for wind turbine towers according to claim 1, characterized in that: There are two positioning clamps (6). Each positioning clamp (6) includes a Y-shaped folded plate (61). The forked part of the Y-shaped folded plate (61) bends toward the side baffle (1). A rear connecting plate (62) is provided at the tail end of the folded plate (61), and a front connecting plate (63) is provided at its two front ends. Positioning holes are provided on both the rear connecting plate (62) and the front connecting plate (63). The rear connecting plate (62) is used to connect to the wall tie on the inner wall of the tower. The two ends of the pressure bearing shaft (5) are installed by passing through the positioning holes of the front connecting plate (63).

6. The assembled safety ladder for wind turbine towers according to claim 5, characterized in that: The positioning clamp (6) is set in the middle of the side baffle (1), and the two forks of the Y-shaped folding plate (61) on the positioning clamp (6) are separated by at least one foot pedal (2).

7. The assembled safety ladder for wind turbine towers according to claim 1, characterized in that: The protruding end of the bearing shaft (5) is a threaded section, which is connected to the positioning clamp (6) by a threaded fit.

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