Detachable upper and lower passage device for deep foundation pit

Abstract

The utility model provides a detachable deep foundation pit upper and lower passageway device, including profiled bar protection ring, profiled bar ladder, profiled bar fixed hook, profileed bar vice ladder, profiled bar main ladder, disc foundation, profiled bar protection ring is connected into a whole with profiled bar ladder through welding, profiled bar ladder is connected with profiled bar protection ring through welding, connecting bolt hole is profiled bar ladder side hole, is connected with profiled bar vice ladder and profiled bar main ladder respectively through connecting bolt, profiled bar fixed hook is located the most top of device, connecting bolt hole and preceding connecting bolt hole are the connecting reserved hole of connecting bolt, profiled bar vice ladder can insert or pull out in profiled bar main ladder, and there is connecting bolt hole on profiled bar vice ladder and profiled bar main ladder, connecting bolt connects profiled bar ladder with profiled bar vice ladder, profiled bar main ladder, disc foundation is the bottom foundation of this device, the utility model has the advantages of solving the problem of deep foundation pit upper and lower passageway in engineering actual construction, can guarantee the safety of upper and lower foundation pit construction personnel to the maximum extent.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit construction technology, specifically to a detachable deep foundation pit access device. Background Technology

[0002] Deep foundation pit projects in municipal construction refer to foundation pits with an excavation depth exceeding 5 meters (including 5 meters), or foundation pits with complex geological conditions and surrounding environment even if they do not exceed 5 meters. As a critical facility for construction personnel, the safety and stability of access passages in deep foundation pits are paramount. This utility model designs a detachable deep foundation pit access passage device. While ensuring safety and stability, it employs detachable technology to meet the needs of access passages in foundation pits of different depths. Utility Model Content

[0003] The purpose of this utility model is to provide a detachable deep foundation pit access device. The feature of this device is that, under the premise of ensuring safety and stability, it adopts detachable technology and can meet the needs of foundation pit access devices of different depths.

[0004] A detachable deep foundation pit access device comprises six main components: a steel protective ring, steel ladder runners, steel fixing hooks, a steel auxiliary ladder, a steel main ladder, and a disc foundation. The steel protective ring, made of hollow square steel, prevents falls and is welded to the steel ladder runners to form a single unit. The steel ladder runners, also made of hollow square steel, are welded to the steel protective ring. The first connecting bolt holes are openings on the side of the steel ladder runners, which are then connected to the steel auxiliary ladder and the steel main ladder via bolts. The steel fixing hooks... The fixed hook is located at the top of the device; the second connecting bolt hole and the aforementioned first connecting bolt hole are both reserved holes for connecting bolts; the steel auxiliary ladder and the steel main ladder are made of hollow square steel, the steel main ladder is larger than the steel auxiliary ladder, the steel auxiliary ladder can be inserted or pulled out of the steel main ladder, and the steel auxiliary ladder and the steel main ladder have second connecting bolt holes arranged at 0.3m intervals; the connecting bolts serve to connect the steel ladder rungs to the steel auxiliary ladder and the steel main ladder; the disc foundation is the bottom foundation of this device, which spreads and transfers the upper load.

[0005] Preferably, the bottom of this device has multiple steps but no steel protective ring, ensuring that construction personnel have enough space to enter and exit when they reach the bottom.

[0006] Preferably, the dimensions of the fixed steel hook are adapted to the hanging joint.

[0007] Preferably, the diameter of the disc foundation is 40cm larger than the side length of the main steel ladder.

[0008] The beneficial effects of this utility model are as follows: It solves the problem of access to and from deep foundation pits in actual construction projects, and can ensure the safety of construction personnel going up and down the foundation pits to the greatest extent. Attached Figure Description

[0009] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 , Figure 2 This is a schematic diagram of the structure of the device; Figure 3 , Figure 4 , Figure 5 , Figure 6 This is a detailed diagram of the device.

[0010] The numbers in the attached diagram are: Among them, 1-steel protective ring, 2-steel ladder rung, 3-first connecting bolt hole, 4-steel fixing hook, 5-second connecting bolt hole, 6-steel auxiliary ladder, 7-steel main ladder, 8-connecting bolt, and 9-disc foundation. Detailed Implementation

[0011] To illustrate the features of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will further explain this utility model.

[0012] Example 1: Please see Figures 1 to 6 This embodiment proposes a detachable deep foundation pit access device as shown in the figure. It includes a hollow square steel protective ring 1, primarily designed to prevent personnel from falling, which is welded to the steel ladder rung 2 to form a single unit. The use of hollow square steel reduces the overall weight of the device while meeting actual construction requirements. The steel ladder rung 2, also made of hollow square steel, has a maximum load-bearing capacity of 300KN and is welded to the steel protective ring 1. The first connecting bolt hole 3 is an opening on the side of the steel ladder rung 2, connected to the main / auxiliary steel ladder via connecting bolts 8. The steel fixing hook 4 is located at the top of the device and serves as its fixing device; hooks of different sizes can be customized to meet fixing requirements based on site conditions. The second connecting bolt hole 5 connects to the... The connecting bolt hole 3 is also a reserved hole for connecting bolt 8; the steel auxiliary ladder 6 is made of hollow square steel, slightly smaller than the steel main ladder 7, and can be freely inserted or pulled out. It is located in the upper part of the device and can be freely adjusted according to the depth of the foundation pit. The steel auxiliary ladder 6 has a second connecting bolt hole 5 arranged at a spacing of 0.3m; the steel main ladder 7 is made of hollow square steel, slightly larger than the steel auxiliary ladder 6, and is located in the lower part of the device. It can be freely adjusted according to the depth of the foundation pit. The steel main ladder 7 has a second connecting bolt hole 5 arranged at a spacing of 0.3m; the connecting bolt 8 is used for connection, connecting the steel ladder rung 2 to the steel auxiliary ladder 6 and the steel main ladder 7; the disc foundation 9 is the bottom foundation of the device, which can spread and transfer the load of the upper part, increasing the overall stability of the device.

[0013] Preferably, the steel protective ring 1 is made of 20×40×2.5mm hollow square steel with a bending diameter of 1.5m. It is connected to the steel ladder rung 2 by welding to form a whole. The use of hollow square steel not only ensures the overall rigidity of the device and reduces the overall weight of the device, but also meets the actual construction needs of the device.

[0014] Preferably, the steel ladder rung 2 is made of 20×40×2.5mm hollow square steel, with a maximum load-bearing capacity of 300KN, and is connected to the steel protective ring 1 by welding to form a whole. The bottom of this device is a separate steel ladder rung 2, and the bottom rung does not have a steel protective ring 1, which ensures that construction personnel have enough space to enter and exit when they reach the bottom.

[0015] Preferably, the steel fixing hook 4 is made of 20×40×2.5mm hollow square steel and is located at the top of the device. It is a fixing device for this device. Hooks of different sizes can be customized according to the actual site conditions to meet the fixing requirements and increase the overall stability of the device.

[0016] Preferably, the steel auxiliary ladder 6 is made of 20×40×2.5mm hollow square steel, which can be freely inserted or pulled out. It is located in the upper part of the device and can be freely adjusted according to the depth of the foundation pit. The steel auxiliary ladder 6 has a second connecting bolt hole 5 arranged at a spacing of 0.3m.

[0017] Preferably, the main steel ladder 7 is made of 30×50×2.5mm hollow square steel and is located in the lower half of the device. It can be freely adjusted according to the depth of the foundation pit on site. The main steel ladder 7 has a second connecting bolt hole 5 arranged at a spacing of 0.3m.

[0018] Preferably, the disc foundation 9 is made of Q235 steel and serves as the bottom foundation of this device. The diameter of the disc is 40cm larger than the side length of the main steel ladder 7, which allows the device to distribute and transfer the load during use, thereby increasing the overall stability of the device.

[0019] The above embodiments and accompanying drawings are only used to illustrate the technical solutions of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model. Other related technical structures not disclosed in detail in this utility model are existing technologies in the art.

Claims

1. A detachable deep foundation pit access device, characterized in that: This device includes a steel protective ring (1), steel ladder rungs (2), steel fixing hooks (4), a steel auxiliary ladder (6), a steel main ladder (7), and a disc foundation (9). The steel protective ring (1) and the steel ladder rungs (2) are fixedly connected to form a whole to prevent people from falling. The steel ladder rungs (2) have first connecting bolt holes (3) on their sides, which are connected to the steel auxiliary ladder (6) and the steel main ladder (7) respectively by connecting bolts (8). The steel fixing hooks (4) are located at the top of the device. The steel auxiliary ladder (6) has second connecting bolt holes (3) on its sides. The connecting bolt hole (5) and the second connecting bolt hole (5) are the same as the first connecting bolt hole (3) as the connection reserved holes for connecting bolts (8); the steel auxiliary ladder (6) and the steel main ladder (7) are made of hollow square steel. The steel main ladder (7) is larger than the steel auxiliary ladder (6). The steel auxiliary ladder (6) can be inserted into or pulled out of the steel main ladder (7). The steel auxiliary ladder (6) and the steel main ladder (7) have evenly distributed second connecting bolt holes (5); the connecting bolts (8) connect the steel ladder rung (2) with the steel auxiliary ladder (6) and the steel main ladder (7).

2. The detachable deep foundation pit access device according to claim 1, characterized in that: The bottom of this device is equipped with multiple stair rails but no steel protective ring (1), ensuring that construction personnel have enough space to enter and exit when they go down to the bottom.

3. The detachable deep foundation pit access device according to claim 1, characterized in that: The steel fixing hook (4) is adapted to the size of the hanging point.

4. The detachable deep foundation pit access device according to claim 1, characterized in that: The diameter of the circular base (9) is 40cm larger than the side length of the main steel ladder (7).

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