Anti-falling and anti-collapse device for engineering deep pile foundation and deep foundation pit

Abstract

The invention discloses an anti-falling and anti-collapse device for an engineering deep pile foundation and a deep foundation pit, which is a protective device invented for solving the problem of operator casualties caused by manual operation of the deep pile foundation and the deep foundation pit, falling of foreign matters and collapse of side walls in constructional engineering and road and bridge engineering. The upper ring beam semi-locking device is triggered by gravity, then the linkage device is started, the steel stand columns incline towards the inner side, the steel stand columns and the double-layer high-strength carbon fiber protective net jointly form a stable triangular space, the safety of operators is effectively protected, and the device can be widely applied to underground pile foundation and foundation pit manual operation.

Description

Technical Field

[0001] Engineering deep pile foundation, deep foundation pit anti-fall and anti-collapse devices are widely used in deep pile foundation excavation, deep foundation pit manual operations in the field of construction engineering, as well as pier excavation and deep foundation pit manual operations in the field of roads and bridges. Background Art

[0002] During manual excavation and the construction of deep pile foundations and deep foundation pits that require manual work, casualties among construction workers due to falling foreign objects and well wall collapse often occur.

[0003] Especially in manual operations on pile foundations over 30 meters deep, traditional steel plate protective covers are useless under the strong impact of falling objects and are vulnerable. In addition, the traditional steel plate protective covers are installed in a fixed position and need to be reinstalled when the operation position changes, which is time-consuming and labor-intensive. It is urgent to develop an effective protective device. Summary of the invention

[0004] The anti-fall and anti-collapse devices for deep pile foundations and deep foundation pits are composed of upper and lower limit steel ring beams, 8 evenly distributed steel columns, and double-layer high-strength carbon fiber anti-fall nets and double-layer high-strength carbon fiber protective nets connected to the columns. Figure 1 This device adopts the gravity trigger principle and does not require the arrangement of detection equipment. It has the advantages of high sensitivity, safety and reliability, easy installation, reusability, wide adaptability, and can be adjusted arbitrarily from 0.8 to 1.5 meters in diameter. Description of the drawings: Figure 1 ——Device diagram Figure 2 ——Normal condition of the device Figure 3 ——Device trigger Figure 4 ——Device protection status Figure 5 ——Details of upper ring beam Figure 6 ——Details of lower ring beam Figure 7 ——Column details Figure 8 ——Upper ring beam semi-locking device Fig. 9 ——Details of the upper ring beam semi-locking device (locked state) Fig.10 ——Details of the upper ring beam semi-locking device (unlocked state) Fig.11 ——Detailed drawing of upper ring beam linkage device DETAILED DESCRIPTION

[0006] 1. Working principle of the device: 1. Normal situation: The upper and lower ring beams are in normal positions, the columns are upright, the upper anti-fall net is open, the side protection nets are overlapped, and the workers are digging. The device gradually descends with the working surface under the action of its own gravity. Figure 2 2. Device trigger: When foreign objects fall from the top and are heavier than 20KN, they fall on the anti-fall net and the net will sink, pulling the columns. The semi-locking device of the upper ring beam will be triggered, unlocked and released, and the linkage device will start. The columns will tilt inward and be tightly buckled together, and the side protective nets will be tightened to form a stable triangular space, effectively protecting the safety of the operators.

[0007] The side wall collapses, and the columns and side protection nets bear horizontal force. When the horizontal force is greater than 10KN, the upper ring beam semi-locking device is triggered, unlocked and released, the linkage device is activated, the columns tilt inwards and fasten together, and the side protection nets open to form a stable triangular space, effectively protecting the safety of the workers. Figure 3 , In the event of a serious landslide or shaft collapse, the device still has sufficient stability after load-bearing capacity verification (safety factor of 2.0) and will not collapse or break, providing trapped personnel with 48 hours of rescue time.

[0008] 4. Reuse: The device has a simple structure, is easy to assemble and disassemble, has replaceable components, and is reusable.

[0009] (II) Supporting equipment: 1. 48-hour emergency food and water for workers.

[0010] 2. The operating personnel shall have 24-hour backup low-voltage lighting equipment.

[0011] 3. Emergency communication equipment for operating personnel.

[0012] 4. 48-hour emergency sodium peroxide breathing device for workers.

[0013] 5. Emergency pump drainage device.

[0014] (III) Semi-locked state: The column is in the reset state, squeezing the steel ball, which moves toward the inside of the hole, compressing the spring to produce outward pressure, causing friction between the steel ball and the column, and the column is in a semi-locked state. Figure 8 , Fig. 9 (IV) Unlock status: When the horizontal force on the column is greater than the friction force, the column is in the unlocked state and tilts inward. Fig.10 (V) Linkage status: The column tilts inwards, pulling the force transmission wire, pulling out the spring limit pin of column 2, the spring hits column 2, column 2 is unlocked and tilts inwards, column 2 is linked, and each column is linked in turn, and the device is in a protective state. Fig.11 .

Claims

1. The anti-fall and anti-collapse device for deep pile foundation and deep foundation pit of the project is a protection device for underground workers composed of upper and lower steel ring beams, steel columns, top anti-fall nets and side protection nets.

2. This device consists of upper and lower limit steel ring beams, 8 evenly distributed steel columns, a double-layer high-strength carbon fiber anti-fall net and a double-layer high-strength carbon fiber protective net connected to the columns.

3. This device adopts the gravity trigger principle, does not require the arrangement of detection equipment, has high sensitivity, is safe and reliable, is easy to install, and the diameter can be adjusted arbitrarily from 0.8 to 1.5 meters.

4. When a foreign object with a weight of more than 20KN falls from the top, the semi-locking device of the upper ring beam is triggered, the linkage device is started, the columns tilt inward and buckle together, and the side protective nets are tightened to form a stable triangular space to protect the safety of the operators.

5. When the side wall collapses and the protective net and columns are subjected to a horizontal force greater than 10KN, the semi-locking device of the upper ring beam is triggered, the linkage device is started, the columns tilt inward and fasten together, and the side protective net opens to form a stable triangular space to protect the safety of the workers.

6. In the event of severe landslides or shaft collapse, the device still has sufficient strength (safety factor 2.0) to provide trapped personnel with 48 hours of rescue time.

7. The device has a simple structure, easy resetting operation, convenient disassembly and assembly, replaceable components, and reusable device.

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