Dewatering well for foundation pit engineering

Abstract

The utility model provides a dewatering well for foundation pit engineering, which relates to the technical field of deep foundation pit drainage, and comprises a dewatering well pipe body, a coarse filter screen and a fine filter screen, and further comprises a lower plate fixed at the bottom of the well, the upper surface of the lower plate is fixedly connected with an upper plate, and the bottom surfaces of the upper plate and the lower plate are rotatably connected with a plurality of annularly distributed screw rods; by arranging the upper plate, the positions of the guide rods are adjusted through sliding of the sliding blocks on the upper plate, and by adjusting the positions of the guide rods, when a dewatering well pipe body, a fine filter screen and a coarse filter screen are installed subsequently, the outer walls of the dewatering well pipe body, the fine filter screen and the coarse filter screen are connected with the surfaces of the guide rods in a sliding mode; the multiple guide rods are used for guaranteeing that the relative positions are accurately positioned when the dewatering well pipe body, the fine filter screen and the coarse filter screen are installed, and deviation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit drainage, in particular to a dewatering well for foundation pit engineering. Background Art

[0002] In the deep foundation pit project, there are several ponds scattered in the proposed site. The surface water and the upper stagnant water have a close hydraulic connection and replenish each other. The upper part of the proposed site is distributed with plain fill, and the upper stagnant water is mainly stored in this layer. Affected by the surface water and the upper stagnant water, there may be risks such as fill wetting and self-weight consolidation settlement, which will affect the stability of the deep foundation pit foundation.

[0003] After searching

[0004] A dewatering well structure for foundation pit engineering, with publication number: CN219491051U, comprises a well hole arranged in the foundation pit and a dewatering well body arranged in the well hole, wherein the dewatering well body comprises a well pipe, a fine filter layer, a medium filter layer, a coarse filter layer, a crushed stone layer and a gravel layer, wherein the fine filter layer is fixedly connected to the outer wall of the well pipe, the coarse filter layer is fixedly connected to the inner wall of the well hole, the medium filter layer is arranged between the coarse filter layer and the fine filter layer, the crushed stone layer is filled between the coarse filter layer and the medium filter layer, the gravel layer is filled between the fine filter layer and the medium filter layer, a plurality of water-permeable holes are arranged on the wall of the well pipe for circular drainage at equal intervals, and a clay layer is filled between the upper inner wall of the well hole and the well pipe.

[0005] However, the well pipe, fine filter layer, medium filter layer and coarse filter layer below need to be constantly adjusted to prevent the placement position from shifting and affecting the thickness uniformity of the filled crushed stone layer and gravel layer. Therefore, the existing technology needs to be careful during construction, which will affect the construction progress. Utility Model Content

[0006] The utility model aims to solve the problems existing in the prior art and proposes a dewatering well for foundation pit engineering.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dewatering well for foundation pit engineering, including a dewatering well pipe body, a coarse filter screen and a fine filter screen, and also including a lower plate for fixing at the bottom of the well, the upper surface of the lower plate is fixedly connected to the upper plate, and the bottom surfaces of the upper plate and the lower plate are rotatably connected to a plurality of annularly distributed screw rods, the screw rods are threadedly connected to sliders, the upper surfaces of the upper and lower plates are hollowed out along the length direction of the screw rods for sliding connection with the sliders, and the top edge of the slider on the upper plate is threadedly connected to a guide rod, one end of the screw rod extends toward the center of the upper plate and is inserted with an insert sleeve, the outer wall of the insert sleeve is fixedly connected with a transmission bevel gear, and the upper surface of the upper plate is inserted with a hanging frame, and the hanging frame is movably connected with a driving bevel gear driven by a motor, and the driving bevel gear is used to mesh with the transmission bevel gear.

[0008] Preferably, the cross section of the insert is rectangular, the end face of the driving bevel gear is rotatably connected to a rotating ring, and the bottom surfaces of the upper plate and the lower plate are connected to the rotating ring via spring rods.

[0009] Preferably, the centers of the upper surfaces of the upper plate and the lower plate are both hollowed out, and the bottom edge of the hanging frame is plugged into the hollowed out portion of the circular array on the surface of the upper plate.

[0010] Preferably, the bottom edge of the hanging frame is movably connected with an extension arm corresponding to the position and quantity of a plurality of annularly distributed screw rods, and an electric telescopic rod for pushing the transmission bevel gear is rotatably connected through the top surface of the extension arm.

[0011] Preferably, an electric push rod for driving the bevel gear to rise and fall is fixedly connected through the hanging frame, and the centers of the top surfaces of the upper plate and the lower plate are hollowed out and slidably connected to a plurality of extension arms.

[0012] Preferably, the bottom edge of the lower plate at each screw rod position is rotatably connected to the first rotating arm, the bottom edge of the slider on the lower plate is rotatably connected to the second rotating arm, the second rotating arm is rotatably connected to a connecting seat while swinging, the connecting seat is hinged to the first rotating arm at the top edge position away from the second rotating arm, and is hinged to the third rotating arm at the bottom edge position, and the third rotating arm is hinged to a ground nail while swinging.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, an upper plate is provided and a slider on the upper plate is used to slide and adjust the position of the guide rod. By adjusting the position of the guide rod, it is convenient to slide and connect the outer walls of the precipitation well pipe body, fine filter screen and coarse filter screen with the surfaces of several guide rods during the subsequent installation of the precipitation well pipe body, fine filter screen and coarse filter screen. Several guide rods are used to ensure that the relative positions of the precipitation well pipe body, fine filter screen and coarse filter screen are accurately positioned when installing them without deviation.

[0015] 2. In the utility model, by setting up a hanging frame, utilizing the connection between the hanging frame and the upper surface of the upper plate and utilizing the lifting and lowering of the driving bevel gear in the hanging frame to adjust the position, cooperating with the electric telescopic rod on the hanging frame, the upper plate or the lower plate can be controlled by the hanging frame, and the hanging frame can be recovered for the next use after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a dewatering well for foundation pit engineering is proposed for the utility model;

[0017] Figure 2The utility model provides a structural schematic diagram of a dewatering well upper plate for foundation pit engineering;

[0018] Figure 3 The utility model proposes a dewatering well for foundation pit engineering Figure 2 Schematic diagram of the structure viewed from above;

[0019] Figure 4 for Figure 2 Schematic diagram of top section:

[0020] Figure 5 for Figure 4 Schematic diagram of the top section:

[0021] Figure 6 This is a top view of the lower plate:

[0022] Figure 7 for Figure 5 Enlarged view of point A in the middle.

[0023] Legend: 1. Coarse filter; 2. Fine filter; 3. Drainage well pipe; 4. Guide rod; 5. Upper plate; 6. Lower plate; 7. Lifting frame; 8. First rotating arm; 9. Third rotating arm; 10. Ground nail; 11. Second rotating arm; 12. Screw rod; 13. Insert cylinder; 14. Electric push rod; 15. Transmission bevel gear; 16. Drive bevel gear; 17. Extension arm; 18. Electric telescopic rod; 19. Slider; 20. Spring rod; 21. Rotating ring; 22. Connecting seat. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0026] like Figure 1-7As shown, a dewatering well for foundation pit engineering includes a dewatering well pipe body 3, a coarse filter screen 1 and a fine filter screen 2, and also includes a lower plate 6 for fixing at the bottom of the well, the upper surface of the lower plate 6 is fixedly connected to an upper plate 5, the bottom surfaces of the upper plate 5 and the lower plate 6 are both rotatably connected to a plurality of annularly distributed screw rods 12, the screw rods 12 are threadedly connected to sliders 19, the upper surfaces of the upper plate 5 and the lower plate 6 are hollowed out along the length direction of the screw rod 12 for sliding connection with the sliders 19, and the top edge of the slider 19 on the upper plate 5 is threadedly connected to a guide rod 4 , install the lower plate 6 in the drilled well pit, and after leveling, use the screw rod 12 on the upper plate 5 to rotate, so that the slider 19 on its surface moves along the hollow direction of the upper plate 5, and then the guide rod 4 on the slider 19 moves. By adjusting the positions of the guide rods 4, when the precipitation well pipe body 3, the fine filter screen 2 and the coarse filter screen 1 are placed in sequence, the outer walls of the three are in sliding contact with the rod bodies of the guide rods 4, and under the action of the leveling of the lower plate 6, the precipitation well pipe body 3 and the fine filter screen 2 can be installed in the descending state. 2 and the coarse filter screen 1, it is ensured that it can be quickly positioned during installation, and the installation position is accurate without deviation. One end of the screw rod 12 extends toward the center direction of the upper plate 5 and is inserted with a sleeve 13. The outer wall of the sleeve 13 is fixedly connected with a transmission bevel gear 15. The upper surface of the upper plate 5 is inserted with a hanging frame 7. The hanging frame 7 is movably connected with a driving bevel gear 16 driven by a motor. The driving bevel gear 16 is used to mesh with the driving bevel gear 15. In this scheme, the driving bevel gear 16 is driven to rotate by installing an existing product servo motor in the hanging frame 7. After the lower plate 6 is leveled, the hanging frame 7 is lifted down to the upper surface of the upper plate 5 by a lifting device, and then the driving bevel gear 15 of the servo motor and its main shaft passes through the upper plate 5 and descends to the bottom surface of the upper plate 5. The transmission bevel gear 15 is pushed by external force to move to mesh with the driving bevel gear 16, and the servo motor can be used to drive the drive shaft bevel gear 16 to rotate, thereby realizing the meshing connection The transmission bevel gear 15 drives the screw rod 12 to rotate, and the slider 19 at the corresponding position slides.

[0027] In order to ensure the smooth rotation of the screw rod 12: the cross-section of the insert cylinder 13 is rectangular, the end face of the driving bevel gear 16 is rotatably connected with a rotating ring 21, and the bottom surfaces of the upper plate 5 and the lower plate 6 are connected to the rotating ring 21 through a spring rod 20. By applying an external force to the rotating ring 21, the transmission bevel gear 15 is applied with an external force, so that the transmission bevel gear 15 drives the rotating ring 21 and the insert cylinder 13 to overcome the pulling force of the spring rod 20 and move to mesh with the driving bevel gear 16. When the transmission bevel gear 15 rotates, it can drive the insert cylinder 13 to rotate at the same time, while the rotating ring 21 and the spring rod 20 will not rotate. The set spring rod 20 can also use the elastic contraction of the spring rod 20 after losing the thrust on the rotating ring 21, so as to realize the transmission bevel gear 15 and the insert cylinder 13 reset to away from the driving bevel gear 16.

[0028] In order to stabilize the position of the hanging frame 7 and use the hanging frame 7 to drive the screw rod 12 to rotate: the centers of the upper surfaces of the upper plate 5 and the lower plate 6 are both hollowed out, and the bottom edge of the hanging frame 7 is plugged into the hollow parts of the circular array on the surface of the upper plate 5. By plugging the hanging frame 7 into the hollow parts on the surface of the upper plate 5, the position of the hanging frame 7 can be fixed, preventing the hanging frame 7 from sliding or rotating on the surface of the upper plate 5.

[0029] The bottom edge of the hanging frame 7 is movably connected with an extension arm 17 corresponding to the position and number of the plurality of annularly distributed screw rods 12. The top surface of the extension arm 17 is rotatably connected with an electric telescopic rod 18 for pushing the transmission bevel gear 15. The hanging frame 7 is fixedly connected with an electric push rod 14 for pushing the lifting and lowering of the driving bevel gear 16. The center of the top surface of the upper plate 5 and the lower plate 6 is hollowed out and slidably connected with the plurality of extension arms 17. In this scheme, the extension arm 17 is fixed on the housing of the servo motor for driving the driving bevel gear 16 to rotate, and the servo motor for driving the driving bevel gear 16 to rotate is fixed on the telescopic push rod 14. The servo motor at this position is used to drive the electric push rod 14 to rotate, so as to ensure that the extension arm 17 can smoothly pass through the hollow parts on the surfaces of the upper plate 5 and the lower plate 6 during the descent of the hanging frame 7, and after moving to between two adjacent transmission bevel gears 15, the servo motor on the top edge of the hanging frame 7 is used to drive the electric push rod 14 to rotate until the extension arm 17 of the servo motor housing on its telescopic end moves to the back of the corresponding transmission bevel gear 15, and the electric telescopic rod 18 on the extension arm 17 is extended to push the rotating ring 21 to move, thereby pushing the transmission bevel gear 15 to move.

[0030] In order to adjust the horizontality of the lower plate 6: the bottom edge of the lower plate 6 is rotatably connected to the first rotating arm 8 at the position of each screw rod 12, the bottom edge of the slider 19 on the lower plate 6 is rotatably connected to the second rotating arm 11, the second rotating arm 11 is rotatably connected to the connecting seat 22 while swinging, the top edge of the connecting seat 22 away from the second rotating arm 11 is hinged to the first rotating arm 8, and the bottom edge is hinged to the third rotating arm 9, the third rotating arm 9 is hinged to the ground nail 10 while swinging, and the position of the lower plate 6 is fixed by inserting a plurality of ground nails 10 into the bottom of the well, and when the surface of the lower plate 6 is tilted, the transmission bevel gear 15 reaches the bottom surface of the lower plate 6 as the electric push rod 14 continues to extend, and similarly By adjusting the position of the extension arm 17 and utilizing the electric telescopic rod 18 at the inclined end of the lower plate 6 to push the transmission bevel gear 15 at the inclined end to move and rotate with the driving bevel gear 16, the driving bevel gear can be utilized to realize the rotation of the screw rod 12 at the inclined end of the lower plate 6, thereby realizing the sliding of the slider 19 at the inclined end, realizing the movement of the second rotating arm 11 at the bottom, and realizing the angle adjustment between the first rotating arm 8 and the third rotating arm 9 under the hinged action of the connecting seat 22. When the ground nail 10 is inserted into the bottom of the well, the inclined end of the lower plate 6 is adjusted upward, thereby realizing the inclination adjustment of the lower plate 6. In addition, after leveling the lower plate 6, the bottom of the lower plate 6 can be filled, hardened and fixed by pouring concrete.

[0031] Working principle: lower the lower plate 6 to the bottom of the well, and with the help of gravity or external force, several ground nails 10 on the bottom of the lower plate 6 are inserted into the bottom of the well, and the hanging frame 7 is hung down by a crane or other equipment to be plugged into the upper surface of the upper plate 5, and the electric push rod 14 is extended to realize the transmission bevel gear 15 passing through the upper plate 5 and the lower plate 6 to reach the bottom of the lower plate 6. According to the inclination of the lower plate 6, the low point of the lower plate 6 is determined, and the driving bevel gear 16 is used to drive the transmission bevel gear 15 at the low point to rotate, thereby realizing the rotation of the screw rod 12 at the low point, and under the hinged action of the first rotating arm 8, the second rotating arm 11 and the third rotating arm 9 and the connecting seat 22, the low point of the lower plate 6 is adjusted upward, that is, the lower plate 6 is leveled. After leveling, the transmission bevel gear 15 on the lower plate 6 and the extension arm 17 on the hanging frame 7 are reset, and then the electric push rod 1 on the hanging frame 7 is reset. 4 is retracted to realize the driving bevel gear 16 rising to the bottom surface of the upper plate 5, and then the servo motor on the top edge of the hanging frame 7 drives the electric push rod 14 to rotate until the extension arm 17 of the servo motor housing on its telescopic end moves to the back of the corresponding transmission bevel gear 15, and the electric telescopic rod 18 on the extension arm 17 is extended to push the rotating ring 21 to move, thereby pushing the transmission bevel gear 15 to move to mesh with the driving bevel gear 16, and the servo motor drives the driving transmission bevel gear 15 to rotate, thereby realizing the meshing connection of the transmission bevel gear 15 and driving the screw rod 12 to rotate, so that the slider 19 at the corresponding position slides, and the relative positions of the several guide rods 4 on the upper plate 5 are adjusted. The precipitation well pipe body 3, the fine filter screen 2 and the coarse filter screen 1 are sequentially connected with the guide rods 4 at different positions to achieve fast and accurate installation. After the installation is completed, the hanging frame 7 can be lifted out.

[0032] The wiring diagram of the servo motor, the electric push rod 14 and the electric telescopic rod 18 in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the motor, the electric push rod 14 and the electric telescopic rod 18 are not explained in detail.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A dewatering well for foundation pit engineering, comprising a dewatering well pipe body (3), a coarse filter (1) and a fine filter (2), characterized in that: The utility model also comprises a lower plate (6) for fixing at the bottom of the well, the upper surface of the lower plate (6) is fixedly connected to the upper plate (5), the bottom surfaces of the upper plate (5) and the lower plate (6) are both rotatably connected to a plurality of annularly distributed screw rods (12), the screw rods (12) are threadedly connected to sliders (19), the upper surfaces of the upper plate (5) and the lower plate (6) are hollowed out along the length direction of the screw rods (12) and are slidably connected to the sliders (19), and the sliders (19) on the upper plate (5) are ) is connected to a guide rod (4) through an embedded thread on the top edge, one end of the screw rod (12) extends toward the center direction of the upper plate (5) and is plugged with an insert sleeve (13), the outer wall of the insert sleeve (13) is fixedly connected with a transmission bevel gear (15), the upper surface of the upper plate (5) is plugged with a hanging frame (7), and a driving bevel gear (16) driven by a motor is movably connected inside the hanging frame (7), and the driving bevel gear (16) is used to mesh with the transmission bevel gear (15).

2. The dewatering well for foundation pit engineering according to claim 1 is characterized by: The insert cylinder (13) has a rectangular cross section, the end surface of the driving bevel gear (16) is rotatably connected to a rotating ring (21), and the bottom surfaces of the upper plate (5) and the lower plate (6) are connected to the rotating ring (21) via a spring rod (20).

3. The dewatering well for foundation pit engineering according to claim 1 is characterized in that: The centers of the upper surfaces of the upper plate (5) and the lower plate (6) are both hollowed out, and the bottom edge of the hanging frame (7) is plugged into the hollowed out portions of the annular array on the surface of the upper plate (5).

4. The dewatering well for foundation pit engineering according to claim 1, characterized in that: The bottom edge of the hanging frame (7) is movably connected to an extension arm (17) corresponding to the position and number of a plurality of annularly distributed screw rods (12), and the top surface of the extension arm (17) is rotatably connected to an electric telescopic rod (18) for pushing the transmission bevel gear (15).

5. The dewatering well for foundation pit engineering according to claim 4, characterized in that: An electric push rod (14) for driving the bevel gear (16) to move up and down is fixedly connected to the hanging frame (7), and the centers of the top surfaces of the upper plate (5) and the lower plate (6) are hollowed out and slidably connected to a plurality of extension arms (17).

6. The dewatering well for foundation pit engineering according to claim 1, characterized in that: The bottom edge of the lower plate (6) is rotatably connected to a first rotating arm (8) at the position of each screw rod (12); the bottom edge of the slider (19) on the lower plate (6) is rotatably connected to a second rotating arm (11); the second rotating arm (11) is rotatably connected to a connecting seat (22) while swinging; the connecting seat (22) is hinged to the first rotating arm (8) at the top edge away from the second rotating arm (11) and is hinged to a third rotating arm (9) at the bottom edge; the third rotating arm (9) is hinged to a ground nail (10) at the swinging edge.

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