Civil construction ladder stand convenient to assemble

Abstract

The utility model provides a climbing ladder convenient to assemble for civil construction, and relates to the technical field of climbing ladders, the climbing ladder comprises a frame body and guardrails, the two sides of the top end of the frame body are respectively and fixedly connected with a plurality of supporting rods, the outer surface of the frame body is fixedly connected with a plurality of pedals, one end of the frame body is provided with a positioning device, and the other end of the frame body is provided with a positioning device. The positioning device comprises a sliding block, one side of the sliding block is rotatably connected with a cylinder, the inner wall of the cylinder is slidably connected with a round rod, the bottom end of the round rod is rotatably connected with a conical rod, and a spiral groove is formed in the outer surface of the conical rod. The angle of the conical rod is adjusted by pushing the cylinders to rotate on the two sides of the bottom end of the frame body, the conical rod is controlled to move downwards and is rotationally inserted into the foundation pit ground, the angle between the frame body and the foundation pit ground is further limited, and the bottom end of the frame body is prevented from sliding and moving in a foundation pit as much as possible when the frame body is used; and the use stability of the frame body is improved.

Description

Technical Field

[0001] This utility model relates to the field of ladder technology, and in particular to a ladder for civil engineering construction that is easy to assemble. Background Technology

[0002] During the construction of a civil engineering foundation pit, ladders need to be erected inside the pit to facilitate workers' movement into or out of the pit, preventing workers from falling while walking directly on the slope of the pit.

[0003] When the ladder is placed inside the foundation pit, since the ladder is attached to the slope of the pit, there is a certain angle between the bottom of the ladder and the surface of the soil in the pit. If there is a lot of sand and gravel on the surface of the soil in the pit, the bottom of the ladder may slide slightly inside the pit when it is used, resulting in low stability of the ladder. Utility Model Content

[0004] The purpose of this invention is to solve the problem that, since the ladder is attached to the slope of the foundation pit and there is a certain angle between the bottom of the ladder and the surface of the foundation pit soil, if there is a lot of sand and gravel on the surface of the foundation pit soil, the bottom of the ladder may slide slightly inside the foundation pit when it is used, resulting in low stability of the ladder. Therefore, this invention proposes a ladder that is easy to assemble for civil construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ladder for easy assembly in civil construction, comprising a frame and a guardrail, wherein several support rods are fixedly connected to the top two sides of the frame, several rods that can be inserted into the support rods are provided on the surface of the guardrail, several treads are fixedly connected to the outer surface of the frame, and two sets of positioning devices are provided at one end of the frame to further restrict the position of the frame inside the foundation pit.

[0006] The effect achieved by the above components is as follows: When using the ladder, the frame is placed against the slope of the pit with the support rods facing upwards. Then, several rods at the bottom of the guardrail are inserted into the support rods at the top of the frame and assembled with the frame. After assembly, personnel can walk up and down inside the pit by stepping on the footboards on the outer surface of the frame. After use, the guardrail can be removed by pulling it upwards and pulling the bottom rods out of the support rods.

[0007] Preferably, the positioning device includes a slider, a cylinder is rotatably connected to one side of the slider, a round rod is slidably connected to the inner wall of the cylinder, a tapered rod is rotatably connected to the bottom end of the round rod, a spiral groove is formed on the outer surface of the tapered rod, a protrusion is fixedly connected to one side of the inner wall of the cylinder, the spiral groove on the outer surface of the tapered rod is located outside the protrusion, and sliding grooves are formed on both sides of the frame, and the slider slides on the inner wall of the sliding groove.

[0008] The effect achieved by the above components is as follows: By setting the tapered rod, when using the ladder, after the frame is placed on the slope, the sliders on both sides at the bottom of the frame can be pushed to move the position of the slider and the cylinder inside the groove. Then, the cylinder is pushed to rotate on one side of the slider to adjust the angle between the cylinder and the frame so that the cylinder is nearly perpendicular to the pit floor. Then, the cylindrical rod is pushed to slide down the inner wall of the cylinder, pushing the tapered rod to insert the bottom end of the tapered rod into the ground. At the same time, the spiral groove on the outer surface of the tapered rod will move outside the protrusion on the inner wall of the cylinder, so that the tapered rod rotates in the direction of the spiral groove, making it easier for the tapered rod to be inserted into the ground, and further restricting the angle between the frame and the pit floor.

[0009] Preferably, a first spring is provided inside the slide groove, and the two ends of the first spring are fixedly connected to one side of the slider and one side of the inner wall of the slide groove, respectively. A stop block is fixedly connected to the outer surface of the frame, and the stop block is located on the outer surface of the frame near the slide groove.

[0010] The effect achieved by the above components is as follows: when the ladder is not in use, the slider can be pushed to move away from the stop block inside the slide groove and lengthen the first spring. Then, the cylinder can be rotated to make the cylinder perpendicular to the stop block. The length of the tapered end protruding into the cylinder can be adjusted by pushing or pulling the rod. The slider is pushed by the first spring to make one end of the tapered rod abut against one side of the stop block. The cylinder and tapered rod are then fitted together and stored on the side of the frame for easy storage and carrying of the frame.

[0011] Preferably, an auxiliary rod is fixedly connected to the top end of the round rod, and the bottom end of the auxiliary rod is provided with two grooves.

[0012] The effect achieved by the above components is that the two grooves on the outer surface of the auxiliary rod make it easier to grasp the auxiliary rod and control the movement of the round rod and the tapered rod.

[0013] Preferably, a plurality of protruding strips are fixedly connected to the outer surface of the frame, and the protruding strips are rubber strips made of rubber material.

[0014] The effect achieved by the above components is that when one end of the tapered rod is pressed against one side of the stop block, the outer surface of the auxiliary rod contacts the surface of the rubber convex strip, which increases the friction between the auxiliary rod and the outer surface of the frame, and minimizes the possibility of the cylinder and tapered rod rotating on one side of the frame.

[0015] Preferably, one end of the frame is provided with two sets of stabilizing devices. Each stabilizing device includes a rotating shaft, one end of which is rotatably connected to one side of the frame. A cylindrical rod is fixedly connected to the outer surface of the rotating shaft, and a sliding rod is slidably connected to the inner wall of the cylindrical rod. A second spring is provided inside the cylindrical rod to limit the position of the sliding rod inside the cylindrical rod. A pad is fixedly connected to the end of the sliding rod away from the cylindrical rod.

[0016] The effect achieved by the above components is as follows: When using the ladder, after placing the ladder inside the pit, the pads on both sides of the bottom of the frame can be pulled to make the sliding rod slide outward on the inner wall of the cylinder and lengthen the second spring. Adjusting the angle of the pads makes the outer side of the pads better fit against the ground of the pit. After releasing the pads, the second spring returns to its original state and pulls the sliding rod towards the cylinder, so that the inner side of the pads is pressed tightly against the surface of the frame, limiting the angle of the pads. The pads support the contact surface between the frame and the pit, further preventing the bottom of the frame from sliding.

[0017] Preferably, a plurality of protruding rods are fixedly connected to the outer surface of the pad, and the protruding rods are distributed circumferentially on the outer surface of the pad.

[0018] The effect achieved by the above-mentioned components is that when the outer surface of the pad with the protruding rod is pressed against the ground of the foundation pit, the friction between the pad surface and the ground of the foundation pit can be increased, resulting in greater friction when the pad contacts the ground of the foundation pit.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] In this invention, by setting a positioning device, when using the ladder, the angle of the tapered rod is adjusted by pushing the cylinders to rotate on both sides of the bottom end of the frame, and the tapered rod is controlled to rotate and insert into the pit ground while moving downwards. This further restricts the angle between the frame and the pit ground, and avoids the bottom end of the frame from sliding and moving in the pit as much as possible, thereby improving the stability of the frame during use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is an exploded three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the frame of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the cylindrical part of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the slider of this utility model;

[0026] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the cylinder rod of this utility model.

[0027] Legend: 1. Frame; 2. Positioning device; 3. Stabilizing device; 4. Step; 5. Support rod; 6. Guardrail; 21. Slide groove; 22. Slider; 23. Cylinder; 24. Tapered rod; 25. Round rod; 26. First spring; 27. Protrusion; 28. Spiral groove; 29. ​​Stop block; 210. Protruding strip; 211. Auxiliary rod; 31. Rotating shaft; 32. Cylindrical rod; 33. Slide rod; 34. Second spring; 35. Pad; 36. Protruding rod. Detailed Implementation

[0028] Example 1, such as Figure 1-2 As shown, a ladder for easy assembly in civil construction includes a frame 1 and a guardrail 6. Several support rods 5 are fixedly connected to the top two sides of the frame 1. Several rods that can be inserted into the support rods 5 are provided on the surface of the guardrail 6. Several footboards 4 are fixedly connected to the outer surface of the frame 1. Two sets of positioning devices 2 are provided at one end of the frame 1 to further restrict the position of the frame 1 inside the foundation pit. When using the ladder, the frame 1 is placed against the slope of the foundation pit with the support rods 5 facing upwards. Then, several rods at the bottom of the guardrail 6 are inserted into the support rods 5 at the top of the frame 1 to assemble with the frame 1. After assembly, personnel can step on the footboards 4 on the outer surface of the frame 1 to move up and down inside the foundation pit. After use, the guardrail 6 can be removed by pulling it upwards and pulling the bottom rods of the guardrail 6 out of the support rods 5.

[0029] Reference Figure 1-5As shown, in this embodiment: the positioning device 2 includes a slider 22, a cylinder 23 rotatably connected to one side of the slider 22, a round rod 25 slidably connected to the inner wall of the cylinder 23, a tapered rod 24 rotatably connected to the bottom end of the round rod 25, a spiral groove 28 formed on the outer surface of the tapered rod 24, a protrusion 27 fixedly connected to one side of the inner wall of the cylinder 23, and the spiral groove 28 on the outer surface of the tapered rod 24 located outside the protrusion 27. Slide grooves 21 are formed on both sides of the frame 1. The slider 22 slides on the inner wall of the slide groove 21. By setting the tapered rod 24, when using the ladder, after placing the frame 1 on the slope, the slider 22 can be pushed from both sides at the bottom end of the frame 1 to move the positions of the slider 22 and the cylinder 23 inside the slide groove 21. Then, the cylinder 23 is pushed to rotate on one side of the slider 22 to adjust the angle between the cylinder 23 and the frame 1. The cylinder 23 is nearly perpendicular to the pit floor. The round rod 25 is then pushed down the inner wall of the cylinder 23, pushing the tapered rod 24 to insert its bottom end into the ground. Simultaneously, the spiral groove 28 on the outer surface of the tapered rod 24 moves outside the protrusion 27 on the inner wall of the cylinder 23, causing the tapered rod 24 to rotate along the direction of the spiral groove 28. This makes it easier for the tapered rod 24 to insert into the ground, further limiting the angle between the frame 1 and the pit floor. By setting the positioning device 2, when using the ladder, the angle of the tapered rod 24 is adjusted by pushing the cylinder 23 to rotate on both sides of the bottom end of the frame 1, and the tapered rod 24 is controlled to rotate and insert into the pit floor while moving downwards. This further limits the angle between the frame 1 and the pit floor, minimizing the possibility of the bottom end of the frame 1 sliding or moving within the pit during use, thus improving the stability of the frame 1 during use.

[0030] Reference Figure 2-5 As shown in this embodiment: a first spring 26 is provided inside the slide 21. The two ends of the first spring 26 are fixedly connected to one side of the slider 22 and one side of the inner wall of the slide 21, respectively. A stop block 29 is fixedly connected to the outer surface of the frame 1. The stop block 29 is located on the outer surface of the frame 1 near the slide 21. When the ladder is not used, the slider 22 can be pushed to move away from the stop block 29 inside the slide 21 and lengthen the first spring 26. Then, the cylinder 23 is rotated so that the cylinder 23 is perpendicular to the stop block 29. The length of the conical end protruding from the inside of the cylinder 23 is adjusted by pushing or pulling the rod 25. The slider 22 is pushed by the first spring 26 so that one end of the conical rod 24 abuts against one side of the stop block 29. The cylinder 23 and the conical rod 24 are fitted together and stored on the side of the frame 1 for easy storage and carrying of the frame 1.

[0031] Reference Figure 2-5As shown in this embodiment: an auxiliary rod 211 is fixedly connected to the top of the round rod 25. The bottom end of the auxiliary rod 211 is provided with two grooves. Holding the auxiliary rod 211 at the two grooves on the outer surface of the auxiliary rod 211 makes it easier to control the movement of the round rod 25 and the conical rod 24. Several protrusions 210 are fixedly connected to the outer surface of the frame 1. The protrusions 210 are rubber strips made of rubber material. When one end of the conical rod 24 is pressed against one side of the stop block 29, the outer surface of the auxiliary rod 211 contacts the surface of the rubber protrusions 210, which increases the friction between the auxiliary rod 211 and the outer surface of the frame 1, and avoids the round rod 23 and the conical rod 24 from rotating on one side of the frame 1 as much as possible.

[0032] Reference Figure 1 , Figure 2 and Figure 6 As shown in this embodiment: Two sets of stabilizing devices 3 are provided at one end of the frame 1. The stabilizing device 3 includes a rotating shaft 31. One end of the rotating shaft 31 is rotatably connected to one side of the frame 1. A cylindrical rod 32 is fixedly connected to the outer surface of the rotating shaft 31. A sliding rod 33 is slidably connected to the inner wall of the cylindrical rod 32. A second spring 34 is provided inside the cylindrical rod 32. The second spring 34 is installed inside the cylindrical rod 32 to limit the position of the sliding rod 33 inside the cylindrical rod 32. A pad 35 is fixedly connected to the end of the sliding rod 33 away from the cylindrical rod 32. When using the ladder, after placing the ladder inside the pit, the pad 35 can be pulled on both sides of the bottom end of the frame 1 to make the sliding rod 33 slide outward on the inner wall of the cylindrical rod 32 and stretch the second spring 34. Adjusting the angle of the pad 35 allows the outer side of the pad 35 to better fit against the pit floor. After releasing the pad 35, the second spring 34 returns to its original state and pulls the slide rod 33 towards the cylinder rod 32, causing the inner side of the pad 35 to press tightly against the surface of the frame 1, thus limiting the angle of the pad 35. The pad 35 supports the contact surface between the frame 1 and the pit, further preventing the bottom of the frame 1 from sliding. Several protruding rods 36 are fixedly connected to the outer surface of the pad 35. The protruding rods 36 are circumferentially distributed on the outer surface of the pad 35. When the outer surface of the pad 35 with the protruding rods 36 is pressed against the pit floor, the friction between the surface of the pad 35 and the pit surface can be increased, resulting in greater friction when the pad 35 contacts the pit floor.

[0033] Working principle: When using the ladder, the frame 1 is placed against the slope of the pit with the support rod 5 facing upwards. At the bottom of the frame 1, sliders 22 are pushed on both sides to move the positions of sliders 22 and cylinder 23 within the groove 21. Then, cylinder 23 is pushed to rotate on one side of slider 22, adjusting the angle between cylinder 23 and frame 1 so that cylinder 23 is nearly perpendicular to the pit floor. Next, the cylindrical rod 25 is pushed to slide downwards along the inner wall of cylinder 23, pushing the tapered rod 24 to insert its bottom end into the ground. Simultaneously, the spiral groove 28 on the outer surface of the tapered rod 24 moves outside the protrusion 27 on the inner wall of cylinder 23, causing the tapered rod 24 to rotate along the direction of the spiral groove 28, making it easier for the tapered rod 24 to insert into the ground. This further restricts the angle between the frame 1 and the pit floor. Then, the ladder is pulled... The movable pad 35 causes the slide rod 33 to slide outward on the inner wall of the cylinder rod 32 and stretches the second spring 34. Adjusting the angle of the pad 35 makes the outer side of the pad 35 better fit on the pit floor. After releasing the pad 35, the second spring 34 returns to its original state and pulls the slide rod 33 towards the cylinder rod 32, so that the inner side of the pad 35 is pressed tightly against the surface of the frame 1, limiting the angle of the pad 35. The pad 35 supports the contact surface between the frame 1 and the pit. Finally, several poles at the bottom of the guardrail 6 are inserted into the various support rods 5 at the top of the frame 1 and assembled with the frame 1. After assembly, personnel can step on the pedals 4 on the outer surface of the frame 1 to pass up and down inside the pit. After use, the guardrail 6 can be removed by pulling it upward to pull the bottom poles of the guardrail 6 out of the support rods 5.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A ladder for easy assembly in civil construction, comprising a frame (1) and a guardrail (6), characterized in that: Several support rods (5) are fixedly connected to the top two sides of the frame (1), and several rods that can be inserted into the support rods (5) are provided on the surface of the guardrail (6). Several pedals (4) are fixedly connected to the outer surface of the frame (1). Two sets of positioning devices (2) are provided at one end of the frame (1) to further restrict the position of the frame (1) inside the pit.

2. The easily assembled ladder for civil construction as described in claim 1, characterized in that: The positioning device (2) includes a slider (22), a cylinder (23) is rotatably connected to one side of the slider (22), a round rod (25) is slidably connected to the inner wall of the cylinder (23), a tapered rod (24) is rotatably connected to the bottom end of the round rod (25), a spiral groove (28) is provided on the outer surface of the tapered rod (24), a protrusion (27) is fixedly connected to one side of the inner wall of the cylinder (23), the spiral groove (28) on the outer surface of the tapered rod (24) is located outside the protrusion (27), and sliding grooves (21) are provided on both sides of the frame (1), and the slider (22) slides on the inner wall of the sliding groove (21).

3. The ladder for easy assembly in civil construction according to claim 2, characterized in that: The slide groove (21) is provided with a first spring (26) inside. The two ends of the first spring (26) are fixedly connected to one side of the slider (22) and one side of the inner wall of the slide groove (21), respectively. The outer surface of the frame (1) is fixedly connected with a stop block (29), which is located on the outer surface of the frame (1) near the slide groove (21).

4. The easily assembled ladder for civil construction as described in claim 3, characterized in that: An auxiliary rod (211) is fixedly connected to the top of the round rod (25), and two grooves are provided at the bottom of the auxiliary rod (211).

5. The easily assembled ladder for civil construction as described in claim 4, characterized in that: The outer surface of the frame (1) is fixedly connected with several protruding strips (210), which are rubber strips made of rubber material.

6. A ladder for easy assembly in civil construction according to claim 5, characterized in that: Two sets of stabilizing devices (3) are provided at one end of the frame (1). The stabilizing device (3) includes a rotating shaft (31). One end of the rotating shaft (31) is rotatably connected to one side of the frame (1). A cylindrical rod (32) is fixedly connected to the outer surface of the rotating shaft (31). A sliding rod (33) is slidably connected to the inner wall of the cylindrical rod (32). A second spring (34) is provided inside the cylindrical rod (32). The second spring (34) is installed inside the cylindrical rod (32) to limit the position of the sliding rod (33) inside the cylindrical rod (32). A pad (35) is fixedly connected to the end of the sliding rod (33) away from the cylindrical rod (32).

7. A ladder for easy assembly in civil construction according to claim 6, characterized in that: The outer surface of the pad (35) is fixedly connected with several protruding rods (36), which are distributed circumferentially on the outer surface of the pad (35).

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