Sinking auxiliary device structure for open caisson construction under complex geological conditions

Abstract

The utility model relates to the technical field of building construction, and discloses a sinking auxiliary device structure for open caisson construction under complex geological conditions, which comprises a limiting frame, a plurality of positioning holes are formed in the periphery of the top of the outer wall of the limiting frame, and the inner walls of the positioning holes are connected with fixing pins in a sliding manner; telescopic rods are fixedly connected to the periphery of the outer wall of the limiting frame, the other ends of the telescopic rods penetrate through the limiting frame and are fixedly connected with rotating blocks, rolling wheels are rotatably connected to the outer walls of the rotating blocks, a shaft is arranged on the inner side of the limiting frame, and the shaft is slidably connected with the rolling wheels; preformed holes are formed in the periphery of the bottom of the outer wall of the shaft. According to the utility model, the rolling wheels are used for extruding the shaft and limiting and guiding the shaft, so that the vertical direction of the shaft in the sinking process is ensured, and slurry can be filled into the periphery of the outer wall of the shaft by the pipeline, so that the geological conditions around the shaft are improved, and sand loss is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a sinking auxiliary device structure for caisson construction under complex geological conditions. Background Art

[0002] A caisson is a shaft-shaped structure. The caisson is made by digging soil in the well, relying on its own gravity to overcome the frictional resistance of the well wall and sinking to the designed elevation. The bottom is then sealed with concrete and the well hole is filled to make it the foundation of a bridge pier or other structure. It is generally used in the construction of foundation pits for large bridge piers, sewage pumping stations, large equipment foundations, civil air defense shelters, shield assembly wells, and underground driveways and station hydraulic foundation construction enclosure devices.

[0003] After searching, the Chinese patent announcement number is: CN220414300U, which discloses an auxiliary device for caisson construction, including a base and a ground-breaking component. The base is annular and is arranged at the bottom of the caisson structure. The ground-breaking component includes a mounting seat, an air-compressed drill bit and a telescopic member. The mounting seat is arranged on the end face of the base away from the caisson structure, the air-compressed drill bit is arranged at the output end of the telescopic member, and the telescopic member is arranged in the mounting seat. The telescopic member is configured to drive the air-compressed drill bit to extend out of the mounting seat away from the bottom of the caisson structure or to be accommodated in the mounting seat. The auxiliary device for caisson construction arranges an air-compressed drill bit at the bottom of the caisson structure before the caisson construction. When the caisson structure encounters a harder rock layer during construction, the air-compressed drill bit is driven and the air-compressed drill bit is used to chisel or break the hard rock layer, so that the caisson structure can continue to sink. Compared with manual operation, it takes less time and can speed up construction efficiency. However, during construction, sand and soil around the outer wall of the wellbore will be lost. The device cannot solve the problem of sand and soil loss, and it is easy to tilt during the descent of the wellbore. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a sinking auxiliary device structure for caisson construction under complex geological conditions, aiming to improve the problem that the device in the existing technology cannot solve the problem of sand and soil loss, and is prone to tilting during the descent of the wellbore.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a sinking auxiliary device structure for caisson construction under complex geological conditions, including a limit frame, a plurality of positioning holes are opened around the top of the outer wall of the limit frame, and the inner walls of the plurality of positioning holes are slidably connected with fixing pins, the outer wall of the limit frame is fixedly connected with a telescopic rod, the other end of the telescopic rod passes through the limit frame and is fixedly connected with a rotating block, the outer wall of the rotating block is rotatably connected with a roller, a wellbore is provided on the inner side of the limit frame, reserved holes are opened around the bottom of the outer wall of the wellbore, a pipe is provided on the inner wall of the reserved hole, a sinking ring is fixedly connected to the bottom of the outer wall of the sinking ring, and a blade is fixedly connected to the bottom of the outer wall of the sinking ring, and a protective mechanism is provided on the inner wall of the wellbore.

[0006] Through the above technical solution: the limit frame is placed in a predetermined position, and the positioning pin is inserted into the positioning hole to firmly fix the limit frame on the construction ground. The telescopic rod can be adjusted according to the size and position of the wellbore. The roller is slidably connected to the outer wall of the wellbore to limit and guide the wellbore, ensuring that the wellbore maintains a vertical direction during the sinking process to prevent the wellbore from tilting or shifting. The reserved holes opened around the bottom of the outer wall of the wellbore are used to install pipes. Mud can be filled into the gap between the wellbore and the sand through the pipe. The mud forms a protective film on the outside of the wellbore wall. The pressure of the mud can balance the pressure of the surrounding soil, prevent soil collapse and sand loss, and reduce sinking resistance. The settlement ring and blade at the bottom of the outer wall of the wellbore play the role of cutting into the soil. When downward pressure is applied to the wellbore, the blade first contacts the soil and gradually cuts in, so that the wellbore can sink smoothly. The settlement ring can increase the contact area between the bottom of the wellbore and the soil, thereby improving the stability of sinking.

[0007] As a further description of the above technical solution:

[0008] The protective mechanism includes multiple mounting seats, which are respectively threadedly connected to the top of the inner wall of the wellbore. A hollow block is fixedly connected to the outer side of the mounting seat, and a lifting ring is rotatably connected to the inner wall of the hollow block. A safety belt is fixedly connected to the bottom of the outer wall of the lifting ring. The other end of the safety belt is fixedly connected to a waist belt, the left end of the waist belt is fixedly connected to a buckle, and the other end of the waist belt is fixed to a quick connector, and the buckle is engaged with the quick connector.

[0009] Through the above technical solution: multiple mounting seats provide a firm fixing point for the entire protective mechanism. This threaded connection method is convenient for installation and disassembly, and can also ensure the stability of the protective mechanism during the caisson construction process. The hollow block is used to connect the lifting ring, and the lifting ring can rotate on the inner wall of the hollow block, which increases flexibility. The safety belt plays a role of connection and protection. The length of the safety belt can be adjusted according to actual needs to accommodate construction workers of different heights. The belt is used to wrap around the waist of the construction worker. The buckle at the left end of the belt and the quick insert at the other end can be easily engaged, so that the belt can be quickly and firmly fixed to the construction worker to prevent the bottom sand and soil from collapsing during construction and causing harm to the construction worker.

[0010] As a further description of the above technical solution:

[0011] A protection box is provided around the outer wall of the limit frame, and screws 1 are threadedly connected to the left and right sides of the outer wall of the protection box. The protection box is threadedly connected to the limit frame through the screws 1.

[0012] Through the above technical solution: the protective box can protect the telescopic rod, preventing the telescopic rod from being damaged by collision during construction and affecting the construction progress.

[0013] As a further description of the above technical solution:

[0014] Pipe rings are provided around the top of the inner wall of the wellbore, and screws 2 are provided around the outer wall of the pipe ring. The pipe ring is threadedly connected to the wellbore through the screws 2.

[0015] Through the above technical solution: the pipe ring can fix the pipe to prevent it from falling due to the increase in weight caused by the injection of mud, and the use of screws for connection facilitates disassembly after the construction is completed.

[0016] As a further description of the above technical solution:

[0017] A reserved groove is provided in the middle of the inner wall of the well shaft, and a lighting lamp is slidably connected to the inner wall of the reserved groove.

[0018] Through the above technical solution: the lighting can provide lighting for the construction workers at the bottom of the well to ensure the accuracy of the excavation depth.

[0019] As a further description of the above technical solution:

[0020] A groove is formed on the outer wall of the roller, and an anti-slip pad is fixedly connected to the inner wall of the groove.

[0021] Through the above technical solution: the anti-skid pad can prevent the roller from slipping during the sinking process of the wellbore, further improving the sinking accuracy.

[0022] As a further description of the above technical solution:

[0023] A controller is fixedly connected to the front side of the top of the outer wall of the limit frame, and a plurality of control buttons are fixedly connected to the front side of the outer wall of the controller.

[0024] As a further description of the above technical solution: the controller can control the extension distance of the telescopic rod, and the depth of the telescopic rod can be fine-tuned by the control button.

[0025] A scale groove is provided on the right side of the outer wall of the wellbore, and an indicator needle is fixedly connected to the outer wall of the rotating block.

[0026] Through the above technical solution: the descent height of the wellbore can be clearly understood through the scale groove and the indicator needle, so as to formulate a construction plan.

[0027] The utility model has the following beneficial effects:

[0028] 1. In the utility model, the roller is driven to squeeze the wellbore by extending the telescopic rod, which limits and guides the wellbore, ensuring that the wellbore maintains a vertical direction during the sinking process and prevents the wellbore from tilting or shifting. Mud can be filled into the gap between the wellbore and the sand through the pipe to improve the geological conditions around the wellbore and prevent sand and soil loss. The blade first contacts the soil and gradually cuts into it, so that the wellbore can sink smoothly.

[0029] 2. In the present invention, the safety belt connected by the lifting ring can adapt to construction workers of different heights. The waist belt connected to the other end of the safety belt is used to wrap around the waist of the construction worker. The buckle at the left end of the waist belt and the quick connector at the other end can be easily engaged, so that the waist belt can be firmly fixed on the construction worker to prevent the construction worker from being injured by the collapse of the bottom sand during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional diagram of the structure of a sinking auxiliary device for caisson construction under complex geological conditions proposed by the utility model;

[0031] Figure 2 This is a partial structural breakdown diagram of a sinking auxiliary device for caisson construction under complex geological conditions proposed by the utility model;

[0032] Figure 3 for Figure 2 Enlarged view of point B;

[0033] Figure 4 This is a top view of the structure of a sinking auxiliary device for caisson construction under complex geological conditions proposed by the utility model;

[0034] Figure 5This is a schematic diagram of the protective mechanism of a sinking auxiliary device structure for caisson construction under complex geological conditions proposed by the present invention;

[0035] Figure 6 for Figure 5 Enlarged view of point A.

[0036] Legend:

[0037] 1. Limit frame; 2. Protection mechanism; 201. Mounting seat; 202. Hollow block; 203. Lifting ring; 204. Safety belt; 205. Waist belt; 206. Buckle; 207. Quick insert; 3. Positioning hole; 4. Fixing pin; 5. Telescopic rod; 6. Rotating block; 7. Roller; 8. Shaft; 9. Reserved hole; 10. Pipeline; 11. Settlement ring; 12. Blade; 13. Protection box; 14. Screw one; 15. Pipeline ring; 16. Screw two; 17. Reserved groove; 18. Lighting lamp; 19. Groove; 20. Anti-slip pad; 21. Controller; 22. Control button; 23. Scale groove; 24. Indicator needle. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Reference Figure 1 、 Figure 3 and Figure 4 The utility model provides an embodiment: a sinking auxiliary device structure for caisson construction under complex geological conditions, including a limit frame 1, a plurality of positioning holes 3 are opened on the top of the outer wall of the limit frame 1, and the inner walls of the plurality of positioning holes 3 are slidably connected with fixing pins 4. The fixing pins 4 pass through the positioning holes 3 and are inserted into the ground to firmly fix the limit frame 1. The outer wall of the limit frame 1 is fixedly connected with telescopic rods 5 on all sides. The plurality of telescopic rods 5 operate synchronously. The other end of the telescopic rod 5 passes through the limit frame 1 and is fixedly connected with a rotating block 6. The outer wall of the rotating block 6 is rotatably connected to a roller 7, and a wellbore 8 is provided on the inner side of the limit frame 1. The roller 7 provides a guide for the wellbore 8. Reserved holes 9 are opened around the bottom of the outer wall of the wellbore 8. A pipe 10 is provided on the inner wall of the reserved hole 9. The mud can be filled into the outer wall of the wellbore 8 through the pipe. A sinking ring 11 is fixedly connected to the bottom of the outer wall of the wellbore 8. A blade 12 is fixedly connected to the bottom of the outer wall of the sinking ring 11. The blade 12 can reduce the resistance of the wellbore 8 when it descends. A protective mechanism 2 is provided on the inner wall of the wellbore 8;

[0040] Specifically, by placing the limit frame 1 in a predetermined position and inserting the fixing pin 4 into the positioning hole 3, the limit frame 1 is firmly fixed on the construction ground. The telescopic rods 5 around the limit frame 1 can be adjusted according to the size and position of the shaft 8. The other end of the telescopic rod 5 is connected to the rotating block 6 and the roller 7. The roller 7 is slidably connected to the outer wall of the shaft 8 to limit and guide the shaft 8, ensuring that the shaft 8 maintains a vertical direction during the sinking process, preventing the shaft 8 from tilting or deflecting, thereby ensuring that the shaft 8 does not tilt when it descends. The reserved holes around the bottom of the outer wall of the shaft 8 are 9 is used to install pipes 10, through which mud can be filled into the gap between the wellbore 8 and the sand. The mud forms a protective film on the outside of the well wall. The pressure of the mud can balance the pressure of the surrounding soil, prevent soil collapse and sand loss, and reduce the sinking resistance. The settlement ring 11 and the blade 12 at the bottom of the outer wall of the wellbore 8 play the role of cutting into the soil. When downward pressure is applied to the wellbore 8, the blade 12 first contacts the soil and gradually cuts into it, so that the wellbore 8 can sink smoothly. The settlement ring 11 can increase the contact area between the bottom of the wellbore 8 and the soil, thereby improving the stability of the sinking.

[0041] Reference Figure 1 、 Figure 5 and Figure 6 The protective mechanism 2 includes a plurality of mounting seats 201, which are respectively threadedly connected to the top of the inner wall of the shaft 8. The mounting seats 201 are easily disassembled by means of threaded connection. A hollow block 202 is fixedly connected to the outer side of the mounting seat 201. A lifting ring 203 is rotatably connected to the inner wall of the hollow block 202. A safety belt 204 is fixedly connected to the bottom of the outer wall of the lifting ring 203. The safety belt 204 can be adjusted in height according to the height of the construction worker. The other end of the safety belt 204 is fixedly connected to a waist belt 205, which is used to be fixed to the waist of the construction worker. The left end of the waist belt 205 is fixedly connected to a buckle 206, and the other end of the waist belt 205 is fixed with a quick plug 207, which is engaged with the buckle 206;

[0042] Specifically, multiple mounting seats 201 are threadedly connected around the top of the inner wall of the shaft 8, providing a firm fixing point for the entire protective mechanism 2. This threaded connection method is convenient for installation and disassembly, and can also ensure the stability of the protective mechanism 2 during the caisson construction process. The hollow block 202 outside the mounting seat 201 is used to connect the lifting ring 203, and the lifting ring 203 can be rotated on the inner wall of the hollow block 202, which increases flexibility. The safety belt 204 connected to the bottom of the lifting ring 203 plays a role of connection and protection. The length of the safety belt 204 can be adjusted according to actual needs to adapt to construction workers of different heights. The waist belt 205 connected to 2 at the other end of the safety belt 204 is used to wrap around the waist of the construction worker. The buckle 206 at the left end of the waist belt 205 and the quick insert 207 at the other end can be easily engaged, so that the waist belt 205 can be quickly and firmly fixed to the construction worker to prevent the bottom sand and soil from collapsing during construction and causing harm to the construction worker.

[0043] Reference Figure 1 、 Figure 2 and Figure 4 , a protective box 13 is provided around the outer wall of the limit frame 1, and the protective box 13 can protect the telescopic rod 5. The left and right sides of the outer wall of the protective box 13 are threadedly connected with screws 14, and the protective box 13 is threadedly connected to the limit frame 1 through screws 14; a pipe ring 15 is provided around the top of the inner wall of the well shaft 8, and the pipe ring 15 can fix the pipe 10 and provide support for the pipe 10. The outer wall of the pipe ring 15 is provided with screws 16, and the pipe ring 15 is threadedly connected to the well shaft 8 through screws 16; a reserved groove 17 is provided in the middle of the inner wall of the well shaft 8, and the inner wall of the reserved groove 17 is slidably connected with a lighting lamp 18. The lighting lamp 18 mainly plays a lighting role, and construction can be carried out at night;

[0044] Specifically, the protective box 13 can protect the telescopic rod 5 to prevent it from being hit or damaged by external objects during construction. It is connected with screw 14 to facilitate the disassembly and maintenance of the telescopic rod 5; the pipe ring 15 can fix the pipe 10, and the pipe ring 15 can be disassembled after the construction is completed through the connection of screw 2 16, and can be recycled; the lighting lamp 18 mainly serves as lighting for night construction to prevent slow construction progress due to light problems.

[0045] Reference Figure 1 、 Figure 2 and Figure 3, the outer wall of the roller 7 is provided with a groove 19, and the inner wall of the groove 19 is fixedly connected with an anti-slip pad 20, which can increase the friction between the wellbore 8 and the roller 7 to prevent the roller 7 from slipping during the sinking process of the wellbore 8; the front side of the top of the outer wall of the limit frame 1 is fixedly connected to a controller 21, and the front side of the outer wall of the controller 21 is fixedly connected to a plurality of control buttons 22; the right side of the outer wall of the wellbore 8 is provided with a scale groove 23, and the outer wall of the rotating block 6 is fixedly connected with an indicator needle 24, by which the indicator needle 24 points to the position on the scale groove 23, the descending height of the wellbore 8 can be specifically understood;

[0046] Specifically, the anti-slip pad 20 can increase the friction between the wellbore 8 and the roller 7, preventing the roller 7 from slipping during the sinking process of the wellbore 8, thereby better limiting and guiding the wellbore 8; the controller 21, as the control center of the entire sinking auxiliary device, can control the extension distance of the telescopic rod 5; by pointing the indicator needle 24 to the position on the scale groove 23, the specific descent height of the wellbore 8 can be understood.

[0047] Working principle: Before using the device, first insert the fixing pin 4 into the positioning hole 3 to firmly fix the limit frame 1 on the construction ground. The telescopic rod 5 can be adjusted according to the size and position of the wellbore 8. The other end of the telescopic rod 5 is connected to the rotating block 6 and the roller 7. The roller 7 plays the role of limiting and guiding the wellbore to ensure that the wellbore 8 maintains a vertical direction during the sinking process to prevent the wellbore 8 from tilting or shifting. The pipe 10 can fill the mud into the gap between the wellbore 8 and the sand to improve the geological conditions around the wellbore 8 and prevent sand and soil from being lost. The blade 12 first contacts the soil and gradually cuts in, so that the wellbore 8 can sink smoothly. The sinking ring 11 can increase the contact area between the bottom of the wellbore 8 and the soil, improve the stability of the sinking, and pass Multiple mounting bases 201 are threadedly connected to the top of the inner wall of the shaft 8 around, providing a firm fixing point for the entire protective mechanism 2. This threaded connection method is convenient for installation and disassembly. The hollow block 202 on the outside of the mounting base 201 is used to connect the lifting ring 203. The lifting ring 203 can rotate on the inner wall of the hollow block 202, which increases flexibility. The safety belt 204 connected to the bottom of the lifting ring 203 plays a role of connection and protection. The length of the safety belt 204 can be adjusted according to actual needs. The belt 205 is used to wrap around the waist of the construction worker. The buckle 206 and the quick insert 207 can be easily engaged, so that the belt 205 can be quickly and firmly fixed to the construction worker to prevent the bottom sand and soil from collapsing during construction and causing harm to the construction worker.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sinking auxiliary device structure for caisson construction under complex geological conditions, comprising a limit frame (1), characterized in that: The top of the outer wall of the limit frame (1) is provided with a plurality of positioning holes (3) on all sides, and the inner walls of the plurality of positioning holes (3) are slidably connected to fixing pins (4). The outer wall of the limit frame (1) is fixedly connected to a telescopic rod (5) on all sides, and the other end of the telescopic rod (5) passes through the limit frame (1) and is fixedly connected to a rotating block (6). The outer wall of the rotating block (6) is rotatably connected to a roller (7). A wellbore (8) is provided on the inner side of the limit frame (1). The bottom of the outer wall of the wellbore (8) is provided with reserved holes (9) on all sides, and the inner walls of the reserved holes (9) are provided with pipes (10). The bottom of the outer wall of the wellbore (8) is fixedly connected to a sinking ring (11), and the bottom of the outer wall of the sinking ring (11) is fixedly connected to a blade (12). The inner wall of the wellbore (8) is provided with a protective mechanism (2).

2. The sinking auxiliary device structure for caisson construction under complex geological conditions according to claim 1 is characterized in that: The protection mechanism (2) comprises a plurality of mounting seats (201), wherein the plurality of mounting seats (201) are respectively threadedly connected to the top of the inner wall of the shaft (8), a hollow block (202) is fixedly connected to the outer side of the mounting seat (201), a lifting ring (203) is rotatably connected to the inner wall of the hollow block (202), a safety belt (204) is fixedly connected to the bottom of the outer wall of the lifting ring (203), the other end of the safety belt (204) is fixedly connected to a waist belt (205), the left end of the waist belt (205) is fixedly connected to a buckle (206), the other end of the waist belt (205) is fixedly connected to a quick connector (207), and the buckle (206) is engaged with the quick connector (207).

3. The sinking auxiliary device structure for caisson construction under complex geological conditions according to claim 1 is characterized in that: A protective box (13) is provided around the outer wall of the limit frame (1), and screws (14) are threadedly connected to the left and right sides of the outer wall of the protective box (13). The protective box (13) is threadedly connected to the limit frame (1) through the screws (14).

4. The sinking auxiliary device structure for caisson construction under complex geological conditions according to claim 1 is characterized in that: Pipe rings (15) are provided around the top of the inner wall of the wellbore (8), and screws (16) are provided around the outer wall of the pipe ring (15). The pipe ring (15) is threadedly connected to the wellbore (8) through the screws (16).

5. The sinking auxiliary device structure for caisson construction under complex geological conditions according to claim 1 is characterized in that: A reserved groove (17) is provided in the middle of the inner wall of the wellbore (8), and a lighting lamp (18) is slidably connected to the inner wall of the reserved groove (17).

6. The sinking auxiliary device structure for caisson construction under complex geological conditions according to claim 1 is characterized in that: The outer wall of the roller (7) is provided with a groove (19), and the inner wall of the groove (19) is fixedly connected with an anti-slip pad (20).

7. The sinking auxiliary device structure for caisson construction under complex geological conditions according to claim 1 is characterized by: A controller (21) is fixedly connected to the front side of the top of the outer wall of the limit frame (1), and a plurality of control buttons (22) are fixedly connected to the front side of the outer wall of the controller (21).

8. The sinking auxiliary device structure for caisson construction under complex geological conditions according to claim 1 is characterized by: A scale groove (23) is provided on the right side of the outer wall of the wellbore (8), and an indicator needle (24) is fixedly connected to the outer wall of the rotating block (6).

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