Foundation pit excavation positioning mechanism

Abstract

The utility model discloses a foundation pit excavation positioning mechanism, which relates to the technical field of foundation pit positioning and comprises a base, a reserved pit position is arranged on the inner side of the base, the outer surface of the base is fixedly connected with a positioning frame, and the outer surface of the base is fixedly connected with an extension frame. The device is reasonable in design structure, the base, the reserved pit position, the positioning line, the positioning frame, the extension frame, the protection cylinder and the low cylinder are matched, the positioning line can be compared with a calibration line drawn on the ground before and during shallow pit excavation, the positioning line is fixed on the ground through screws on the positioning frame and the extension frame, and the positioning line is convenient to use. The equipment can be compared with a calibration line on the ground at any time in the whole construction process, and the protective cylinder and the low cylinder can be spliced with each other, so that the equipment can descend at any time on the terrains with soft soil, and the inner wall of a foundation pit can be prevented from collapsing; and the problems that collapse occurs when the foundation pit is excavated on the soft sandy soil, and the center of the foundation pit deviates are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit positioning, in particular to a foundation pit excavation positioning mechanism. Background Art

[0002] The purpose of positioning the foundation pit is to ensure the safety and quality of the foundation pit excavation and enclosure projects. There are many risk factors in the foundation pit excavation and enclosure projects, such as soil and foundation deformation, collapse, geological disasters and other problems. Therefore, during the construction of the foundation pit project, the use of building foundation pit monitoring can timely discover problems in the construction process and make timely adjustments, thereby ensuring the smooth progress of the entire foundation pit project. The core purpose of building foundation pit monitoring is to discover foundation pit deformation or sudden disaster events, and to issue timely warnings and take countermeasures before the accident occurs. At the same time, foundation pit monitoring can also monitor water level, soil and other data in real time, which is conducive to preventing unnecessary safety accidents.

[0003] Before excavating the foundation pit, it is necessary to mark lines for positioning. After digging a shallow pit, a casing needs to be placed to provide a downward vertical force for the subsequent mechanical drilling machine. However, in some areas with loose soil, collapse is prone to occur at any time when digging a shallow pit. However, after the collapse, a certain wall of the pit will become thicker or thinner after digging, thereby causing the center point to shift, and then causing the subsequent foundation pit to shift. For this reason, we provide a foundation pit excavation positioning mechanism to solve the above problems. Utility Model Content

[0004] 1) Technical issues solved

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a foundation pit excavation positioning mechanism.

[0006] 2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foundation pit excavation positioning mechanism, comprising a base, a reserved pit position is arranged on the inner side of the base, a positioning frame is fixedly connected to the outer surface of the base, an extension frame is fixedly connected to the outer surface of the base, a positioning line is arranged above the positioning frame, a casing is arranged inside the base, and a low cylinder is arranged below the casing.

[0008] Furthermore, a positioning groove is provided on the inner side of the positioning frame, a screw is fixedly connected to the outer surface of the positioning frame, a rotating pin is rotatably connected to the outer surface of the positioning frame, and the positioning wire is wound around the rotating pin and fixedly connected to the outer surface of the screw.

[0009] Furthermore, a slot is provided on the inner side of the lower tube and the protective tube, and an inserting plate is fixedly connected to the outer surface of the lower tube and the protective tube, and the outer surface of the inserting plate is slidably connected to the outer surface of the slot.

[0010] Furthermore, the inner sides of the lower tube and the protective tube are both provided with reserved grooves, the inner sides of the reserved grooves are threadedly connected with threaded nails, and the outer surfaces of the threaded nails are threadedly connected with spliced ​​plates.

[0011] Furthermore, the outer surface of the base is fixedly connected to a fixing seat, the outer surface of the fixing seat is rotatably connected to a gear, the inner sides of the casing and the lower cylinder are provided with teeth, and the outer surfaces of the teeth are meshed with the outer surface of the gear.

[0012] Furthermore, the outer surface of the positioning frame is rotatably connected to a hydraulic rod, the output end of the hydraulic rod is fixedly connected to a force-bearing plate, and the outer surface of the force-bearing plate is rotatably connected to a clamping plate.

[0013] Furthermore, the outer surface of the clamping plate is rotatably connected to the outer surface of the base, a clamping groove is provided on the inner side of the clamping plate, and the outer surface of the clamping groove and the outer surface of the gear are mutually clamped.

[0014] 3) Beneficial effects:

[0015] Compared with the prior art, the foundation pit excavation positioning mechanism has the following beneficial effects:

[0016] 1. The utility model cooperates with a base, a reserved pit, a positioning line, a positioning frame, an extension frame, a casing and a low cylinder. The positioning line can be compared with a calibration line drawn on the ground before and during shallow pit excavation, and is fixed to the ground by screws on the positioning frame and the extension frame, so that the equipment can be compared with the calibration line on the ground at any time during the entire construction process. The casing and the low cylinder can be assembled with each other, so that they can be lowered at any time on soft soil terrain, so that the inner wall of the foundation pit can be prevented from collapsing, thereby solving the problem of collapse of the foundation pit excavated on soft sand and the deviation of the center of the foundation pit.

[0017] 2. The utility model cooperates between the positioning line, the positioning frame and the positioning groove, and the inner wall of the positioning groove is installed with tempered glass, which can prevent the excavated soil from burying the calibration line drawn on the ground in advance, so as to facilitate checking whether the equipment is aligned with the calibration line at any time, thereby reducing the deviation of the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 This is an enlarged structural diagram of the positioning frame in the utility model;

[0020] Figure 3 It is a schematic diagram of the overall partial explosion structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the explosion structure of the middle casing and the lower casing of the utility model.

[0022] In the figure: 1. base; 2. reserved pit; 3. positioning frame; 4. extension frame; 5. positioning line; 6. casing; 7. low tube; 8. positioning groove; 9. screw; 10. rotating nail; 11. slot; 12. plug-in plate; 13. reserved groove; 14. threaded nail; 15. splicing plate; 16. fixing seat; 17. gear; 18. teeth; 19. hydraulic rod; 20. force plate; 21. clamping plate; 22. clamping groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-4 As shown, the utility model provides a technical solution: a foundation pit excavation positioning mechanism, comprising a base 1, a reserved pit position 2 is arranged on the inner side of the base 1, a positioning frame 3 is fixedly connected to the outer surface of the base 1, an extension frame 4 is fixedly connected to the outer surface of the base 1, a positioning line 5 is arranged above the positioning frame 3, a casing 6 is arranged inside the base 1, and a low cylinder 7 is arranged below the casing 6. The positioning line 5 can be compared with a calibration line drawn on the ground before and during shallow pit excavation, and is fixed to the ground by screws 9 on the positioning frame 3 and the extension frame 4, so that the equipment can be compared with the calibration line on the ground at any time during the entire construction process, the casing 6 and the low cylinder 7 can be assembled with each other, so that it can be lowered at any time on the terrain with soft soil, so that it can prevent the inner wall of the foundation pit from collapsing, thereby solving the problem of collapse of the foundation pit excavated on soft sand and the deviation of the center of the foundation pit.

[0025] A positioning groove 8 is provided on the inner side of the positioning frame 3, a screw 9 is fixedly connected to the outer surface of the positioning frame 3, a rotating nail 10 is rotatably connected to the outer surface of the positioning frame 3, the positioning line 5 is wound around the rotating nail 10 and fixedly connected to the outer surface of the screw 9, and tempered glass is installed on the inner wall of the positioning groove 8 to prevent the excavated soil from burying the calibration line drawn on the ground in advance, which is conducive to checking whether the equipment is aligned with the calibration line at any time, thereby reducing the phenomenon of deviation in the foundation pit.

[0026] A slot 11 is provided on the inner side of the low tube 7 and the casing 6, and an insert plate 12 is fixedly connected to the outer surface of the low tube 7 and the casing 6. The outer surface of the insert plate 12 is slidably connected to the outer surface of the slot 11. The insert plate 12 can be inserted into the slot 11, so that the low tube 7 and the casing 6 can be quickly connected to each other, and the length of the entire casing 6 can be quickly extended, which is conducive to moving downward at any time to provide protection for the inner wall of the foundation pit.

[0027] A reserved groove 13 is provided on the inner side of the low tube 7 and the casing 6, and a threaded nail 14 is threadedly connected to the inner side of the reserved groove 13, and a splicing plate 15 is threadedly connected to the outer surface of the threaded nail 14. The threaded nail 14 can fix the splicing plate 15 on the low tube 7 and the casing 6 on the threaded groove, so that the casing 6 and the low tube 7 can be fixedly connected together, reducing the possibility of disconnection between the low tube 7 and the casing 6.

[0028] The outer surface of the base 1 is fixedly connected to a fixing seat 16, and the outer surface of the fixing seat 16 is rotatably connected to a gear 17. The inner sides of the casing 6 and the low tube 7 are provided with teeth 18, and the outer surfaces of the teeth 18 and the outer surface of the gear 17 are meshed with each other. The fixing seat 16 can provide support for the gear 17, and when the casing 6 and the low tube 7 move downward, the gear 17 can provide the low tube 7 and the casing 6 with a moving direction through the teeth 18, and when the gear 17 is stuck and cannot move, the casing 6 and the low tube 7 can be kept stationary to prevent the casing 6 and the low tube 7 from sliding downward.

[0029] The outer surface of the positioning frame 3 is rotatably connected to a hydraulic rod 19, the output end of the hydraulic rod 19 is fixedly connected to a force-bearing plate 20, and the outer surface of the force-bearing plate 20 is rotatably connected to a clamping plate 21. The hydraulic rod 19 can push or pull the force-bearing plate 20 with the positioning frame 3 as a reference point, so that the force-bearing plate 20 can drive the clamping plate 21 to move.

[0030] The outer surface of the clamping plate 21 is rotatably connected to the outer surface of the base 1, and a clamping groove 22 is provided on the inner side of the clamping plate 21. The outer surface of the clamping groove 22 and the outer surface of the gear 17 are mutually clamped. When the clamping plate 21 moves, it can rotate with the point where the clamping plate 21 and the base 1 are connected to each other as the center of the circle. When the clamping groove 22 is attached to the outer surface of the gear 17, the clamping groove 22 can lock the gear 17 and prevent the gear 17 from rotating. When the clamping plate 21 is detached from the gear 17, the gear 17 will rotate freely.

[0031] Working principle: When the equipment is needed, first place the four positioning lines 5 on the ground against the calibration lines drawn on the ground, then use bolts to nail into the positioning frame 3 and the extension frame 4 so that the base 1 can be fixed on the ground, and then use a small drilling equipment to drill downward through the reserved pit 2. There is no need to worry about whether the manual drilling will be tilted. Then, when the depth is close to half a meter, the casing 6 and the low cylinder 7 can be spliced ​​together, and the teeth 18 are aligned with the gear 17 and placed in the reserved pit 2. When the hydraulic press is turned on, the hydraulic press can pull back first so that the gear 17 can rotate freely, so that the low cylinder 7 or the casing 6 can contact the bottom of the pit, and then the hydraulic press pushes back to make the gear 17 locked and motionless. At this time, a large vertical excavator can be adjusted to slide on the inside of the low cylinder 7 and the casing 6 to dig vertically downward in the direction given by the low cylinder 7 and the casing 6.

Claims

1. A foundation pit excavation positioning mechanism, comprising a base (1), characterized in that: A reserved pit (2) is arranged on the inner side of the base (1), a positioning frame (3) is fixedly connected to the outer surface of the base (1), an extension frame (4) is fixedly connected to the outer surface of the base (1), a positioning line (5) is arranged above the positioning frame (3), a protective tube (6) is arranged inside the base (1), and a low tube (7) is arranged below the protective tube (6).

2. A foundation pit excavation positioning mechanism according to claim 1, characterized in that: A positioning groove (8) is provided on the inner side of the positioning frame (3); a screw (9) is fixedly connected to the outer surface of the positioning frame (3); a rotating pin (10) is rotatably connected to the outer surface of the positioning frame (3); and the positioning wire (5) is wound around the rotating pin (10) and fixedly connected to the outer surface of the screw (9).

3. The foundation pit excavation positioning mechanism according to claim 1, characterized in that: The inner sides of the lower tube (7) and the protective tube (6) are both provided with a slot (11), the outer surfaces of the lower tube (7) and the protective tube (6) are both fixedly connected with an inserting plate (12), and the outer surface of the inserting plate (12) is slidably connected to the outer surface of the slot (11).

4. A foundation pit excavation positioning mechanism according to claim 1, characterized in that: The inner sides of the lower tube (7) and the protective tube (6) are both provided with a reserved groove (13), the inner side of the reserved groove (13) is threadedly connected with a threaded nail (14), and the outer surface of the threaded nail (14) is threadedly connected with a splicing plate (15).

5. The foundation pit excavation positioning mechanism according to claim 1, characterized in that: The outer surface of the base (1) is fixedly connected to a fixing seat (16), and the outer surface of the fixing seat (16) is rotatably connected to a gear (17). The inner sides of the protective tube (6) and the lower tube (7) are both provided with teeth (18), and the outer surface of the teeth (18) and the outer surface of the gear (17) are in mutual meshing.

6. A foundation pit excavation positioning mechanism according to claim 1, characterized in that: The outer surface of the positioning frame (3) is rotatably connected to a hydraulic rod (19), the output end of the hydraulic rod (19) is fixedly connected to a force-bearing plate (20), and the outer surface of the force-bearing plate (20) is rotatably connected to a clamping plate (21).

7. A foundation pit excavation positioning mechanism according to claim 6, characterized in that: The outer surface of the clamping plate (21) is rotatably connected to the outer surface of the base (1), a clamping groove (22) is provided on the inner side of the clamping plate (21), and the outer surface of the clamping groove (22) is mutually clamped to the outer surface of the gear (17).

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