Telescopic movable crawling ladder for wind power plant foundation pit construction

Abstract

The utility model relates to the field of wind power plant foundation pit construction, and discloses a telescopic movable crawling ladder for wind power plant foundation pit construction, which comprises a first ladder assembly and a second ladder assembly which are horizontally arranged in a staggered manner, the first ladder assembly is used for being horizontally placed at the top of a foundation pit slope, and the second ladder assembly is used for being placed at the bottom of the foundation pit slope; the third ladder assembly and the telescopic ladder assembly are connected between the first ladder assembly and the second ladder assembly, the third ladder assembly and the telescopic ladder assembly are obliquely arranged, the top end of the third ladder assembly is movably connected with the first ladder assembly, the bottom end of the third ladder assembly is connected with the telescopic ladder assembly, and the end, away from the third ladder assembly, of the telescopic ladder assembly is movably connected with the second ladder assembly. The third ladder assembly and the telescopic ladder assembly are used for being obliquely placed along a foundation pit slope. The movable crawling ladder is safe, reliable and suitable for multiple foundation pits.

Description

Technical Field

[0001] This utility model relates to the field of wind farm foundation pit construction, and in particular to a retractable mobile ladder for wind farm foundation pit construction. Background Technology

[0002] Construction of a wind farm requires the excavation of foundation pits, which form the basic structure supporting the wind turbine towers and nacelles. A single wind farm project typically involves multiple foundation pits for each turbine location, with distances between them generally exceeding 1 km. Therefore, installing fixed, permanent ladders during foundation pit construction is costly. Furthermore, due to geological conditions or foundation design, the depth and slope of different foundation pits often vary, typically ranging from 3-4 meters in depth, with a difference of about 1 meter. Simple ladders are commonly used as access routes on construction sites, but these are unsuitable for pits of varying depths and slopes, and often pose safety hazards due to quality issues. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a safe, reliable, and retractable mobile ladder suitable for wind farm foundation pit construction with multiple foundation pits. To solve the above technical problem, the technical solution proposed by this utility model is as follows:

[0004] A retractable mobile ladder for wind farm foundation pit construction includes: a first ladder frame and a second ladder frame arranged horizontally in a staggered manner; the first ladder frame is used to be placed horizontally at the top of the foundation pit slope, and the second ladder frame is used to be placed at the bottom of the foundation pit slope.

[0005] A third ladder and a telescopic ladder are connected between the first ladder and the second ladder. The third ladder and the telescopic ladder are inclined. The top of the third ladder is movably connected to the first ladder, and the bottom of the third ladder is connected to the telescopic ladder. The end of the telescopic ladder away from the third ladder is movably connected to the second ladder. The third ladder and the telescopic ladder are used to be placed inclined along the slope of the foundation pit.

[0006] In one embodiment, the first ladder frame and the third ladder frame are hinged together, and the telescopic ladder frame and the second ladder frame are hinged together.

[0007] In one embodiment, it also includes fixing pins for fixing the first ladder frame to the top of the pit slope and the second ladder frame to the bottom of the pit slope.

[0008] In one embodiment, the third ladder includes two parallel support tubes and a plurality of treads fixedly connected between the two support tubes. The support tubes are hollow tubes. The telescopic ladder includes two parallel support tubes. The support tubes are connected to the corresponding support tubes and can telescopically move along the support tubes.

[0009] In one embodiment, the two supporting pipes are provided with symmetrical first mounting holes, and the two supporting pipes are provided with symmetrical second mounting holes. In use, the first mounting holes and the second mounting holes are aligned and then fixed by positioning pins.

[0010] In one embodiment, the telescopic ladder is provided with a detachable footboard assembly.

[0011] In one embodiment, the detachable pedal assembly includes an L-shaped fixing hook and an inverted U-shaped pedal respectively fixed to two support tubes. The inverted U-shaped pedal includes a pedal body and fixing plates connected to both ends of the pedal body. In use, the fixing plates are inserted into the L-shaped fixing hooks. In one embodiment, the length of the support tube is 0.5-1 meter.

[0012] Compared with existing technologies, the beneficial effects of this application are as follows: The retractable mobile ladder for wind farm foundation pit construction includes a first ladder, a third ladder, a telescopic ladder, and a second ladder that are movably connected. The first and second ladders are placed at the top and bottom of the foundation pit slope, respectively, while the third and telescopic ladders are placed along the foundation pit slope. Because the first and third ladders are movably connected, and the telescopic and second ladders are movably connected, the angle can be adjusted according to different foundation pit slopes. Furthermore, since the telescopic ladder is retractable, it can be used for foundation pit slopes of different heights. Therefore, the retractable mobile ladder for wind farm foundation pit construction of this application is applicable to foundation pits of various slopes and depths. During site relocation, it can also be directly transported to other wind farm foundation pits by small trucks, enabling multiple reuses. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A side view of a retractable mobile ladder used for wind farm foundation pit construction, as one embodiment.

[0015] Figure 2 This is a side view schematic diagram of a retractable mobile ladder section structure used for wind farm foundation pit construction, according to one embodiment.

[0016] Figure 3 This is a front view of a retractable mobile ladder section structure used for wind farm foundation pit construction, according to one embodiment.

[0017] Reference numerals in the attached drawings: 1: First ladder frame; 2: Fixing pin; 3: Third ladder frame; 30: Supporting pipe component one; 4: Step; 5: Positioning pin; 6: Telescopic ladder frame; 60: Supporting pipe component two; 7: First mounting hole; 8: Second ladder frame; 9: Detachable step assembly; 90: L-shaped fixing hook; 92: Inverted U-shaped step. Detailed Implementation

[0018] To facilitate understanding of this utility model, the following description will be provided in more comprehensive and detailed manner with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0019] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0020] Please see Figures 1-3 A retractable mobile ladder for wind farm foundation pit construction mainly includes a first ladder frame 1, a second ladder frame 8, a third ladder frame 3, and a telescopic ladder frame 6. Specifically, the first ladder frame 1 and the second ladder frame 8 are horizontally staggered; the first ladder frame 1 is placed horizontally at the top of the foundation pit slope, and the second ladder frame 8 is placed at the bottom of the foundation pit slope. The third ladder frame 3 and the telescopic ladder frame 6 are connected between the first ladder frame 1 and the second ladder frame 8, and are inclined. Specifically, the top of the third ladder frame 3 is movably connected to the first ladder frame 1, the bottom of the third ladder frame 3 is connected to the telescopic ladder frame 6, and the end of the telescopic ladder frame 6 away from the third ladder frame 3 is movably connected to the second ladder frame 8. The third ladder frame 3 and the telescopic ladder frame 6 are used to be placed inclined along the foundation pit slope.

[0021] Specifically, in one embodiment, the first ladder 1 and the third ladder 3 are hinged together, and the telescopic ladder 6 and the second ladder 8 are hinged together.

[0022] In one embodiment, the system further includes fixing pins 2 for securing the first ladder 1 to the top of the pit slope and the second ladder 8 to the bottom of the pit slope. In use, after the first ladder 1 and the second ladder 8 are placed, the first ladder 1 is secured by inserting the fixing pins 2 into the top of the pit slope, and the second ladder 8 is secured by inserting the fixing pins 2 into the bottom of the pit slope. To improve stability, multiple fixing pins 2 can be used.

[0023] Specifically, in one embodiment, the third ladder frame 3 includes two parallel supporting tubes 30 and a plurality of treads fixedly connected between the two supporting tubes 30. The supporting tubes are hollow tubes. The telescopic ladder frame 6 includes two parallel supporting tubes 60. The supporting tubes 60 are sleeved with the corresponding supporting tubes 30 and can telescopically move along the supporting tubes 30. Specifically, the two supporting tubes 30 are symmetrically provided with first mounting holes 7, and the supporting tubes 60 are symmetrically provided with second mounting holes. In use, the first mounting holes 7 and the second mounting holes are aligned and fixed by positioning pins 5.

[0024] In one embodiment, the length of the support tube 60 of the telescopic ladder frame 6 is 0.5-1 meter.

[0025] In one embodiment, when the length of the telescopic ladder frame 6 exceeds a certain length, for example, exceeding 0.8 meters, the telescopic ladder frame 6 is provided with a detachable footboard assembly 9. Specifically, the detachable footboard assembly 9 includes an L-shaped fixing hook 90 and an inverted U-shaped footboard 92 respectively fixed to two support tubes 60. The inverted U-shaped footboard 92 includes a footboard body and fixing plates connected to both ends of the footboard body. In use, the fixing plates are inserted into the L-shaped fixing hook 90.

[0026] The above-mentioned retractable mobile ladder used for wind farm foundation pit construction is used as follows: After the retractable mobile ladder used for wind farm foundation pit construction is transported to the site, the hinge connection angle between the first ladder frame 1 and the second ladder frame 8 is set according to the slope of the foundation pit. Then the ladder is laid on the foundation pit slope, and the first ladder frame 1 is inserted into the soil at the top of the slope through the fixing pin 2 to fix the position.

[0027] According to the slope length of the foundation pit, adjust the height of the ladder. During adjustment, the telescopic ladder 6 slides inside the first ladder 1, so that the telescopic ladder 6 extends a certain length. Align the first mounting hole 7 on the telescopic ladder 6 with the second mounting through hole on the second ladder 8. Use the positioning pin 5 to insert into the first mounting hole 7 and the second mounting through hole to fix the telescopic ladder 6.

[0028] Adjust the hinge connection angle between the telescopic ladder 6 and the third ladder 3, then lay the third support on the bottom of the foundation pit slope, and insert the first ladder 1 into the soil at the bottom of the slope through the fixing pin 2 to fix the position and complete the installation.

[0029] When the ladder is being moved to another construction site, it can be transported directly to the foundation pit of another wind farm by small truck, so that it can be reused multiple times.

[0030] The retractable mobile ladder for wind farm foundation pit construction disclosed in this application includes a first ladder frame 1, a third ladder frame 3, a telescopic ladder frame 6, and a second ladder frame 8 that are movably connected. The first ladder frame 1 and the second ladder frame 8 are placed at the top and bottom of the foundation pit slope, respectively. The third ladder frame 3 and the telescopic ladder frame 6 are placed along the foundation pit slope. Because the first ladder frame 1 and the third ladder frame 3 are movably connected, and the telescopic ladder frame 6 and the second ladder frame 8 are movably connected, the angle can be adjusted according to different foundation pit slopes. Furthermore, since the telescopic ladder frame 6 is retractable, it can be used for foundation pit slopes of different heights. Therefore, the retractable mobile ladder for wind farm foundation pit construction disclosed in this application is applicable to foundation pits of various slopes and depths. During site relocation, it can also be directly transported to other wind farm foundation pits by small trucks, enabling multiple reuses.

[0031] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A telescopic mobile ladder for wind farm foundation pit construction, characterized in that, include: A first ladder and a second ladder are horizontally staggered; the first ladder is used to be placed horizontally at the top of the foundation pit slope, and the second ladder is used to be placed at the bottom of the foundation pit slope. A third ladder and a telescopic ladder are connected between the first ladder and the second ladder. The third ladder and the telescopic ladder are inclined. The top of the third ladder is movably connected to the first ladder, and the bottom of the third ladder is connected to the telescopic ladder. The end of the telescopic ladder away from the third ladder is movably connected to the second ladder. The third ladder and the telescopic ladder are used to be placed inclined along the slope of the foundation pit.

2. The telescopic mobile ladder for wind farm foundation pit construction according to claim 1, characterized in that, The first ladder frame and the third ladder frame are hinged together, and the telescopic ladder frame and the second ladder frame are hinged together.

3. The telescopic mobile ladder for wind farm foundation pit construction according to claim 1, characterized in that, It also includes fixing pins for securing the first ladder to the top of the pit slope and the second ladder to the bottom of the pit slope.

4. The telescopic mobile ladder for wind farm foundation pit construction according to claim 1, characterized in that, The third ladder includes two parallel support tubes and multiple treads fixedly connected between the two support tubes. The support tubes are hollow tubes. The telescopic ladder includes two parallel support tubes. The support tubes are connected to the corresponding support tubes and can telescopically move along the support tubes.

5. The telescopic mobile ladder for wind farm foundation pit construction according to claim 4, characterized in that, The two support tubes are symmetrically provided with first mounting holes, and the two support tubes are symmetrically provided with second mounting holes. When in use, the first mounting holes and the second mounting holes are aligned and then fixed by positioning pins.

6. The telescopic mobile ladder for wind farm foundation pit construction according to claim 4, characterized in that, The telescopic ladder is equipped with a detachable footboard assembly.

7. The telescopic mobile ladder for wind farm foundation pit construction according to claim 6, characterized in that, The detachable pedal assembly includes an L-shaped fixing hook and an inverted U-shaped pedal, which are respectively fixed on two support tubes. The inverted U-shaped pedal includes a pedal body and fixing pieces connected to both ends of the pedal body. When in use, the fixing pieces are inserted into the L-shaped fixing hooks.

8. The telescopic mobile ladder according to claim 4, characterized in that, The length of the second supporting pipe is 0.5-1 meter.

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