Safety device for soil sampling operation between piles of building composite foundation

Abstract

The application discloses a safety device for building composite foundation pile soil sampling operation and relates to the technical field of building construction. The safety device comprises a protection box body placed in a detection hole formed on a foundation and a support frame located above the foundation. A protection door is hinged to one side of the protection box body. A lifting ring is arranged above the protection box body. An electric hoist is arranged at a position close to the protection box body of the support frame. The electric hoist is provided with a lifting rope connected with the lifting ring. Workers enter the protection box body, and the electric hoist installed on the support frame lowers the protection box body into the detection hole formed on the foundation to protect the workers. A protection door is hingedly arranged on one side of the protection box body. After the workers enter the protection box body, the protection door is closed to prevent soil from entering the protection box body when the protection box body encounters hole collapse in the detection hole of the foundation. The protection box body reduces the safety threat caused by hole collapse of the detection hole and upper soil falling to the workers.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a safety device for soil sampling operations between piles in building composite foundations. Background Technology

[0002] In construction projects located in collapsible loess areas, composite foundations are generally used to address the loess's collapsibility and meet the required bearing capacity. A common type of composite foundation is a combination of compaction piles and a cushion layer.

[0003] After the compaction pile construction is completed, the compaction coefficient, loess collapsibility, and soil compaction coefficient between the piles need to be sampled and tested. A common sampling process is as follows: Open a test hole with a Luoyang shovel → lower workers into the test hole → begin sampling → complete sampling → pull workers out → complete sampling. Workers inside the test hole only wear a safety helmet and a harness around their waist.

[0004] Regarding the aforementioned technologies, the inventors believe that the loosening of the waist harness, the collapse of the borehole, and the falling soil on the top of the worker during the operation inside the borehole all pose safety threats to the worker. Utility Model Content

[0005] The purpose of this application is to provide a safety device for soil sampling operations between piles in building composite foundations, in order to improve the safety threats posed to workers during the operation in the borehole, such as the sling coming loose, the borehole collapsing, and soil falling from above.

[0006] This application provides a safety device for soil sampling between piles in a building composite foundation, which adopts the following technical solution:

[0007] A safety device for soil sampling between piles in a building composite foundation includes a protective box inserted into a probe hole drilled in the foundation and a support frame located above the foundation. A protective door is hinged to one side of the protective box, and a lifting ring is installed above the protective box. An electric hoist is installed on the support frame near the protective box, and the electric hoist is equipped with a lifting rope connected to the lifting ring.

[0008] By adopting the above technical solution, workers enter the protective enclosure, and an electric hoist mounted on the support frame lowers the protective enclosure into the probe hole in the foundation, protecting the workers. A protective door is hinged to one side of the protective enclosure. The protective door is closed after the workers enter the enclosure. After the protective enclosure enters the probe hole, the workers can open the protective door partially to take samples. If the probe hole in the foundation collapses, the protective door is closed to prevent soil from entering the protective enclosure, reducing the safety threat to workers caused by probe hole collapse and soil falling from the ground.

[0009] Optionally, a sampling window communicating with the probe hole in the foundation is provided on the side of the protective enclosure away from the protective door.

[0010] By adopting the above technical solution, a sampling window is opened on the side of the protective box away from the protective door, so that after entering the protective box, the staff can take samples of the soil between the foundation piles in the borehole through the sampling window, which makes it convenient for the staff to take samples at different depths of the borehole.

[0011] Optionally, the protective enclosure has a groove on the side of the sampling window near the inner wall of the protective enclosure, and a protective plate corresponding to the sampling window is slidably installed on the inner wall of the groove.

[0012] By adopting the above technical solution, a sliding groove is opened on the side of the protective box near the sampling window and the inner wall of the protective box. A protective plate is slidably installed on the inner wall of the sliding groove. The staff can push the protective plate to move towards the sampling window to close the sampling window and prevent soil from entering the protective box when the hole collapses.

[0013] Optionally, two ventilation holes are provided on the top of the protective enclosure. Each ventilation hole is equipped with an air inlet pipe for supplying fresh air to the protective enclosure and an air outlet pipe for discharging gas from the protective enclosure. An axial flow fan is connected to the air inlet pipe and the air outlet pipe located on the top of the protective enclosure.

[0014] By adopting the above technical solution, two ventilation holes are opened on the top of the protective box. An axial flow fan sends fresh air into the protective box through the air inlet pipe outside the ventilation hole, and exhausts the air in the protective box through the exhaust pipe of the other ventilation hole. This keeps the air in the protective box fresh, so that the staff in the protective box can keep breathing smoothly and hold on until the rescue arrives when the foundation borehole collapses and they are buried underground.

[0015] Optionally, the support frame is provided above the foundation with two fixing rings that are adapted to the ends of the air inlet pipe and the air outlet pipe away from the protective box. The fixing ring includes a fixing half ring connected to the support frame, and the fixing half ring is hinged to the other half of the fixing half ring for fixing the air inlet pipe and the air outlet pipe.

[0016] By adopting the above technical solution, a fixed half-ring is connected to the support frame, and another half of the fixed half-ring is hinged to the fixed half-ring. The fixed half-rings are interlocked and fixed on the outer walls of the air inlet pipe and the air outlet pipe, forming a fixed ring to fix the end of the air inlet pipe and the air outlet pipe away from the protective box, so as to prevent the air inlet pipe and the air outlet pipe from falling into the ground exploration hole and being unable to deliver fresh air to the protective box.

[0017] Optionally, the air inlet pipe and the air outlet pipe are aluminum foil ducts, and a protective net is provided at the end of the air inlet pipe and the air outlet pipe away from the protective box.

[0018] By adopting the above technical solution, the air inlet pipe and the air outlet pipe are aluminum foil pipes, which can extend when the protective box is lowered to prevent the air inlet pipe and the air outlet pipe from falling into the probe hole. A protective net is fitted on the end of the air inlet pipe and the air outlet pipe away from the protective box to prevent debris from entering the air inlet pipe and the air outlet pipe and causing blockage.

[0019] Optionally, the inner side wall of the protective enclosure is equipped with lighting fixtures.

[0020] By adopting the above technical solution, lighting fixtures are fixed on the inner wall of the protective box to illuminate the inside of the protective box, so that the staff can have a clear field of vision inside the probe hole, which facilitates the staff's data collection work.

[0021] Optionally, a handrail is provided on the inner side wall of the protective box.

[0022] By adopting the above technical solution, handrails are installed on the inner wall of the protective box, so that the staff can stand firmly in the protective box by holding the handrails. This reduces the possibility of the electric hoist shaking when lowering the protective box, which would cause the staff to shake with the protective box and make it impossible to complete the sampling work.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Workers enter the protective enclosure, and an electric hoist mounted on the support frame lowers the enclosure into the borehole in the foundation. The enclosure protects the workers. A protective door is hinged to one side of the enclosure. The door is closed after workers enter the enclosure. After the enclosure enters the borehole, workers can open the door partially to take samples. If the borehole collapses in the foundation, the door is closed to prevent soil from entering the enclosure and to reduce the safety threat to workers from borehole collapse and soil falling from the ground.

[0025] 2. Two ventilation holes are opened on the top of the protective box. An axial flow fan sends fresh air into the protective box through the air inlet pipe outside the ventilation hole, and exhausts the air in the protective box through the exhaust pipe of the other ventilation hole. This keeps the air in the protective box fresh, so that the workers in the protective box can keep breathing smoothly and hold on until the rescue arrives when the foundation borehole collapses and they are buried underground.

[0026] 3. Connect a fixed half-ring to the support frame, and hinge another fixed half-ring to the fixed half-ring to form a fixed ring to fix the end of the air inlet pipe and air outlet pipe away from the protective box, so as to prevent the air inlet pipe and air outlet pipe from falling into the foundation borehole and being unable to deliver fresh air to the protective box; install a protective net on the end of the air inlet pipe and air outlet pipe away from the protective box to prevent debris from entering the air inlet pipe and air outlet pipe and causing blockage. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of a safety device for soil sampling operations between piles in a building composite foundation.

[0028] Figure 2 This is a partial cross-sectional view of the protective enclosure in the embodiment;

[0029] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0030] In the diagram, 1. Protective enclosure; 11. Protective door; 12. Sampling window; 13. Slide rail; 131. Protective plate; 14. Ventilation hole; 141. Air inlet pipe; 142. Exhaust pipe; 15. Axial flow fan; 16. Protective net; 17. Lighting fixture; 18. Handrail; 2. Support frame; 21. Fixing ring; 211. Fixing half ring; 3. Electric hoist; 31. Lifting rope; 4. Lifting ring. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0032] A safety device for soil sampling between piles in a building composite foundation, referring to Figure 1 The system includes a support frame 2 installed on the foundation. The support frame 2 is a combined triangular bracket inserted into the foundation. A self-locking electric chain hoist 3 connected to the power supply is connected to the support frame 2 via a hook. One end of the hoisting rope 31 is connected to the hook below the electric hoist 3, and the other end of the hoisting rope 31 is tied to the hoisting ring 4 fixed with bolts on the protective box 1 welded from steel plates. The electric hoist 3 lowers the protective box 1 into the probe hole opened in the foundation. A protective door 11 is hinged on one side of the protective box 1. The protective door 11 is equipped with a door lock. After the staff enters the protective box 1, the protective door 11 is closed to prevent soil from entering the protective box 1 when the probe hole in the foundation collapses.

[0033] Reference Figure 2 and Figure 3 A sampling window 12 is opened on the side of the protective box 1 away from the protective door 11, so that after entering the protective box 1, the staff can sample the soil between the foundation piles in the borehole through the sampling window 12. A chute 13 is opened on the side of the protective box 1 where the sampling window 12 is close to the inner wall of the protective box 1. A metal protective plate 131 is slidably installed on the inner wall of the chute 13. The staff pushes the protective plate 131 toward the sampling window 12 to close the sampling window 12, preventing soil from entering the protective box 1 in the event of a borehole collapse.

[0034] Reference Figure 2 and Figure 3A lighting fixture 17 is bolted to the inner wall of the protective box 1. The lighting fixture 17 is connected to the power supply through a wire to illuminate the inside of the protective box 1. A handrail 18 is bolted to the inner wall of the protective box 1 so that the staff can stand firmly in the protective box 1 by using the handrail 18. This reduces the possibility of the electric hoist 3 shaking when lowering the protective box 1, which could cause the staff to shake with the protective box 1 and make it impossible to complete the sampling work.

[0035] Reference Figures 1 to 3 Two ventilation holes 14 are made above the protective enclosure 1. An axial flow fan 15, connected to a power source via a wire, is bolted to each of the two ventilation holes 14 on the protective enclosure 1. An air inlet pipe 141 and an air outlet pipe 142, respectively communicating with the two ventilation holes 14, are connected to the axial flow fan 15 via sealing washers and retaining rings. The air inlet pipe 141 and the air outlet pipe 142 are aluminum foil ducts supported and shaped by steel wire. The axial flow fan 15 delivers fresh air into the protective enclosure 1 through the air inlet pipe 141 and exhausts air from the protective enclosure 1 through the air outlet pipe 142, maintaining airflow within the protective enclosure 1. This ensures that personnel inside the protective enclosure 1 are protected even if the foundation borehole collapses and buries them underground. It can maintain smooth breathing and hold on until rescue arrives; a half-ring 211 is fixed on the support frame 2 with bolts, and another half of the fixed half-ring 211 is hinged on the fixed half-ring 211. The two fixed half-rings 211 are fastened to the outer wall of the air inlet pipe 141 and the air outlet pipe 142, and fixed with bolts to form a fixed ring 21 to fix the end of the air inlet pipe 141 and the air outlet pipe 142 away from the protective box 1, so as to prevent the air inlet pipe 141 and the air outlet pipe 142 from falling into the foundation exploration hole; a protective net 16 is fitted on the end of the air inlet pipe 141 and the air outlet pipe 142 away from the protective box 1 to prevent debris from entering the air inlet pipe 141 and the air outlet pipe 142 and causing blockage.

[0036] The implementation principle of this application embodiment is as follows:

[0037] Workers enter the protective enclosure 1 and close the protective door 11. An electric hoist 3, mounted on a support frame 2, lowers the protective enclosure 1 into the borehole drilled in the foundation using a chain and rope 31. Workers move gradually deeper into the borehole with the protective enclosure 1, taking soil samples at regular intervals. An axial flow fan 15 on the protective enclosure 1 starts operating, supplying fresh air into the enclosure 1 through an intake pipe 141 and expelling the gas from the enclosure 1 through an exhaust pipe 142. This maintains airflow within the protective enclosure 1, ensuring that workers inside can breathe smoothly and survive until rescue arrives if the borehole collapses and they are buried underground. The protective enclosure 1 reduces the safety threat to workers posed by borehole collapse and soil spillage from above.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safety device for soil sampling between piles in a building composite foundation, characterized in that: The system includes a protective box (1) placed in a probe hole in the foundation and a support frame (2) located above the foundation. A protective door (11) is hinged to one side of the protective box (1). A lifting ring (4) is provided above the protective box (1). An electric hoist (3) is provided on the support frame (2) near the protective box (1). The electric hoist (3) is provided with a lifting rope (31) connected to the lifting ring (4). The protective enclosure (1) has a sampling window (12) on the side away from the protective door (11) that communicates with the probe hole of the foundation; The protective box (1) has a sliding groove (13) on the side of the sampling window (12) near the inner wall of the protective box (1). The inner wall of the sliding groove (13) is slidably provided with a protective plate (131) corresponding to the sampling window (12). Two ventilation holes (14) are provided on the top of the protective box (1). The ventilation holes (14) are respectively provided with an air inlet pipe (141) for supplying fresh air to the protective box (1) and an air outlet pipe (142) for discharging gas from the protective box (1). An axial flow fan (15) is connected to the air inlet pipe (141) and the air outlet pipe (142) located above the protective box (1). The support frame (2) is located above the foundation and is provided with two fixing rings (21) that are adapted to the ends of the air inlet pipe (141) and the air outlet pipe (142) away from the protective box (1). The fixing ring (21) includes a fixing half ring (211) connected to the support frame (2). The fixing half ring (211) is hinged to the other half of the fixing half ring (211) that fixes the air inlet pipe (141) and the air outlet pipe (142).

2. The safety device for soil sampling between piles in a building composite foundation according to claim 1, characterized in that: The air inlet pipe (141) and the air outlet pipe (142) are aluminum foil air pipes, and a protective net (16) is provided at the end of the air inlet pipe (141) and the air outlet pipe (142) away from the protective box (1).

3. The safety device for soil sampling between piles in a building composite foundation according to claim 2, characterized in that: The inner wall of the protective enclosure (1) is equipped with a lighting fixture (17).

4. The safety device for soil sampling between piles in a building composite foundation according to claim 3, characterized in that: The inner wall of the protective box (1) is provided with a handrail (18).

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