Deep foundation pit well point downcast pipe fixing device

Abstract

The utility model discloses a deep foundation pit well point downcast pipe fixing device which comprises a well pipe, a downcast pipe is arranged in the well pipe, non-woven fabric is arranged on the surface of the downcast pipe, and a water pumping pipe is arranged in the downcast pipe. The clamping mechanism is located at the top of the well casing and comprises a cover plate, the cover plate is located at the top of the well casing, the inner wall of the cover plate is slidably connected with the surface of the well casing, the top of the downcast pipe extends to the top of the cover plate, and clamping blocks are slidably connected to the front side and the rear side of the right side of the inner wall of the cover plate. The position of the non-woven fabric is fixed through the fixing mechanism, the non-woven fabric is prevented from being separated from the downcast pipe, then the downcast pipe in the well pipe is clamped and fixed through the clamping mechanism, the downcast pipe is prevented from inclining, the fixing device for the deep foundation pit well point downcast pipe has the fixing advantage, the stability of the fixing device is improved, and the fixing effect is good. Meanwhile, the phenomenon that the well point downcast pipe shakes and inclines is avoided.

Description

A fixing device for well point dewatering pipes in deep foundation pits Technical Field

[0001] This utility model relates to the field of deep foundation pit technology, specifically a device for fixing well point dewatering pipes in deep foundation pits. Background Technology

[0002] Deep foundation pits refer to excavations with a depth exceeding 5 meters (including 5 meters), or projects with particularly complex geological conditions, surrounding environment, and underground pipelines even if the depth does not exceed 5 meters. Foundation pit engineering mainly includes the design and construction of foundation pit support systems and earthwork excavation. It is a highly comprehensive system engineering project that requires close cooperation between geotechnical and structural engineering technicians. Wellpoint dewatering is a method of artificially lowering the groundwater level, hence also known as the wellpoint dewatering method. Before excavating the foundation pit, a certain number of filter pipes (wells) are buried around the foundation pit, and water is pumped out using pumping equipment to keep the excavated soil in a dry state. The types of wellpoints used include: lightweight wellpoints, jet wellpoints, electro-osmotic wellpoints, pipe wellpoints, and deep wellpoints.

[0003] During the construction of deep foundation pits, wellpoint dewatering pipes are needed to keep the construction site dry and facilitate worker operations. These pipes require a fixing device to secure their position and prevent them from swaying or tilting due to water flow. A search revealed Chinese patent CN215801728U, which discloses a fixing device for deep foundation pit wellpoint dewatering pipes. This device includes steel sheet piles and wellpoint dewatering pipes, with the pipes fixed to the sheet piles via a fixing assembly. The fixing assembly includes a base plate, an adjustment channel, and a retaining ring. The base plate is fixed... This deep foundation pit wellpoint dewatering pipe fixing device uses a fixed welding screw rod. By adjusting the screw rod and the adjustment channel, the length of the device is adjusted to approximately meet the requirements for connecting the sheet piles and the wellpoint dewatering pipes. Then, the base plate is spot-welded to the sheet piles, and the adjustment channel is screwed again for fine-tuning to the side of the wellpoint dewatering pipe. A retaining ring is used to hold the wellpoint dewatering pipe in place, and the bolt is inserted through the bolt pre-drilled hole and screwed to connect with the retaining ring fixing hole, making the retaining ring and the adjustment channel a whole. The entire fixing device has a simple structure, is easy to manufacture, and uses materials commonly found on the construction site, resulting in low cost. It can effectively fix the wellpoint dewatering pipes, with good results and strong practicality.

[0004] The existing technical solutions described above have the following drawbacks: during use, the fixing device cannot fix wellpoint dewatering pipes of different sizes. When pumping water from inside the wellpoint dewatering pipe, the water flow generated by the pumping can easily cause the wellpoint dewatering pipe to shake and tilt, affecting the drainage of the wellpoint dewatering pipe. Summary of the Invention

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a deep foundation pit wellpoint dewatering pipe fixing device, which has the advantage of fixing and solves the problem that the fixing device cannot fix wellpoint dewatering pipes of different sizes during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a deep foundation pit well point dewatering pipe fixing device, including a well pipe, a dewatering pipe is installed inside the well pipe, a non-woven fabric is installed on the surface of the dewatering pipe, and a pumping pipe is installed inside the dewatering pipe;

[0007] A clamping mechanism is located at the top of the well pipe. The clamping mechanism includes a cover plate located at the top of the well pipe. The inner wall of the cover plate is slidably connected to the surface of the well pipe. The top of the dewatering pipe extends to the top of the cover plate. Clamping blocks are slidably connected to the front and rear sides of the right side of the inner wall of the cover plate. A moving component is provided on the left side of the clamping block. The right side of the moving component is fixedly connected to the left side of the clamping block.

[0008] A fixing mechanism is provided, wherein the inner wall of the fixing mechanism is fixedly connected to the bottom of the surface of the rainwater pipe, the fixing mechanism includes a fixing frame, the inner wall of the fixing frame is fixedly connected to the bottom of the surface of the rainwater pipe, a rotating shaft is fixedly connected to the side of the inner wall of the fixing frame away from the rainwater pipe, a rotating block is sleeved on the surface of the rotating shaft, a positioning component is fixedly connected to the top of the surface of the rainwater pipe, and the top of the rotating block penetrates into the interior of the positioning component.

[0009] As a preferred embodiment of the present invention, the movable component includes a forward and reverse threaded screw, which is located on the left side of the clamping block. The front and rear sides of the forward and reverse threaded screw are threaded with threaded sleeves. The right side of the threaded sleeve is fixedly connected to the left side of the clamping block. The front side of the forward and reverse threaded screw extends through to the front side of the cover plate.

[0010] As a preferred embodiment of the present invention, the positioning component includes a ring, the inner wall of which is fixedly connected to the top of the surface of the rainwater pipe, a sleeve is fitted on the surface of the ring, and four corners inside the ring are fixedly connected to locking blocks. The inner wall of the sleeve is fixedly connected to the side of the locking block away from the rainwater pipe, and the side of the locking block near the rotating block extends through into the interior of the rotating block.

[0011] As a preferred embodiment of this utility model, a bushing is fitted on the back side of the surface of the positive and negative threaded screw, the back side of the bushing is fixedly connected to the inner wall of the cover plate, and a handwheel is fixedly connected to the front side of the positive and negative threaded screw.

[0012] As a preferred embodiment of this utility model, the top of the well pipe surface is provided with a limiting groove for use with the cover plate, the surface of the ring is provided with a positioning groove for use with the rotating block, and the top of the rotating block is provided with a locking groove for use with the locking block.

[0013] In a preferred embodiment of this invention, a protective net is fixedly connected to the side of the rotating block closest to the rainwater pipe, the side of the protective net furthest from the rotating block is in contact with the surface of the non-woven fabric, a spring is fixedly connected to the side of the locking block furthest from the rotating block, and the side of the spring furthest from the locking block is fixedly connected to the inner wall of the ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model uses a fixing mechanism to fix the position of the non-woven fabric, preventing the non-woven fabric from detaching from the dewatering pipe. The clamping mechanism then clamps and fixes the dewatering pipe inside the well pipe, preventing the dewatering pipe from tilting. This deep foundation pit well point dewatering pipe fixing device has the advantage of fixing, improves the stability of the fixing device, and avoids the phenomenon of well point dewatering pipe shaking and tilting.

[0016] 2. The present invention, through the setting of the movable component, enables the user to move the clamping block so that the clamping block can clamp and fix the rainwater pipes of different sizes; through the setting of the positioning component, the position of the rotating block can be positioned to prevent the rotating block from rotating when it is not needed, and at the same time, the positions of the rotating block and the non-woven fabric are positioned. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of this utility model;

[0018] Figure 2 is an exploded view of the cover plate in Figure 1 of this utility model;

[0019] Figure 3 is a three-dimensional view of the rainwater pipe in Figure 1 of this utility model;

[0020] Figure 4 is an open view of the structure shown in Figure 3 of this utility model;

[0021] Figure 5 is an exploded view of the sleeve structure in Figure 3 of this utility model;

[0022] Figure 6 is a three-dimensional structural view of the sleeve in Figure 3 of this utility model;

[0023] Figure 7 is a three-dimensional structural view of the fixing frame in Figure 2 of this utility model.

[0024] In the diagram: 1. Well casing; 2. Dewatering pipe; 3. Non-woven fabric; 4. Pumping pipe; 5. Clamping mechanism; 501. Cover plate; 502. Clamping block; 503. Moving component; 503a. Threaded screw; 503b. Screw sleeve; 6. Fixing mechanism; 601. Fixing frame; 602. Rotating block; 603. Positioning component; 603a. Ring; 603b. Locking block; 603c. Sleeve; 7. Bushing; 8. Handwheel; 9. Limiting groove; 10. Positioning groove; 11. Locking groove; 12. Protective net; 13. Spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] As shown in Figures 1 to 7, the present invention provides a deep foundation pit well point dewatering pipe fixing device, including a well pipe 1, a dewatering pipe 2 is installed inside the well pipe 1, a non-woven fabric 3 is installed on the surface of the dewatering pipe 2, and a pumping pipe 4 is installed inside the dewatering pipe 2.

[0027] The clamping mechanism 5 is located at the top of the well pipe 1. The clamping mechanism 5 includes a cover plate 501, which is located at the top of the well pipe 1. The inner wall of the cover plate 501 is slidably connected to the surface of the well pipe 1. The top of the dewatering pipe 2 extends to the top of the cover plate 501. The front and rear sides of the right side of the inner wall of the cover plate 501 are slidably connected to clamping blocks 502. A moving component 503 is provided on the left side of the clamping block 502. The right side of the moving component 503 is fixedly connected to the left side of the clamping block 502.

[0028] The fixing mechanism 6 has its inner wall fixedly connected to the bottom of the surface of the rainwater pipe 2. The fixing mechanism 6 includes a fixing frame 601, the inner wall of which is fixedly connected to the bottom of the surface of the rainwater pipe 2. A rotating shaft is fixedly connected to the side of the inner wall of the fixing frame 601 away from the rainwater pipe 2. A rotating block 602 is sleeved on the surface of the rotating shaft. A positioning component 603 is fixedly connected to the top of the surface of the rainwater pipe 2. The top of the rotating block 602 extends through the interior of the positioning component 603.

[0029] Referring to Figure 2, the moving component 503 includes a threaded rod 503a with both positive and negative threads. The threaded rod 503a is located on the left side of the clamping block 502. The front and rear sides of the surface of the threaded rod 503a are threaded with threaded sleeves 503b. The right side of the threaded sleeve 503b is fixedly connected to the left side of the clamping block 502. The front side of the threaded rod 503a extends through to the front side of the cover plate 501.

[0030] As a technical optimization of this utility model, the movable component 503 allows the user to easily move the clamping block 502, so that the clamping block 502 can clamp and fix the rainwater pipes 2 of different sizes.

[0031] Referring to Figure 5, the positioning component 603 includes a ring 603a. The inner wall of the ring 603a is fixedly connected to the top of the surface of the downpipe 2. A sleeve 603c is fitted onto the surface of the ring 603a. Each of the four corners inside the ring 603a is fixedly connected to a locking block 603b. The side of the locking block 603b away from the downpipe 2 is fixedly connected to the inner wall of the sleeve 603c. The side of the locking block 603b near the rotating block 602 extends into the interior of the rotating block 602.

[0032] As a technical optimization of this utility model, the positioning component 603 can be used to position the rotating block 602, preventing the rotating block 602 from rotating when it is not needed, and simultaneously positioning the rotating block 602 and the non-woven fabric 3.

[0033] Referring to Figure 2, a bushing 7 is fitted on the back side of the surface of the screw 503a with both positive and negative threads. The back side of the bushing 7 is fixedly connected to the inner wall of the cover plate 501. A handwheel 8 is fixedly connected to the front side of the screw 503a with both positive and negative threads.

[0034] As a technical optimization of this utility model, the position of the positive and negative thread screw 503a can be fixed by the bushing 7 to prevent the positive and negative thread screw 503a from shifting during rotation. The handwheel 8 allows the user to easily rotate the positive and negative thread screw 503a.

[0035] Referring to Figure 2, the top of the surface of the well pipe 1 is provided with a limiting groove 9 that is used in conjunction with the cover plate 501, the surface of the ring 603a is provided with a positioning groove 10 that is used in conjunction with the rotating block 602, and the top of the rotating block 602 is provided with a slot 11 that is used in conjunction with the locking block 603b.

[0036] As a technical optimization of this utility model, the position of the cover plate 501 can be limited by the setting of the limiting groove 9, and the position of the rotating block 602 can be positioned by the setting of the positioning groove 10 and the slot 11, so as to prevent the rotating block 602 from detaching from the ring 603a.

[0037] Referring to Figure 3, a protective net 12 is fixedly connected to the side of the rotating block 602 near the rainwater pipe 2. The side of the protective net 12 away from the rotating block 602 is in contact with the surface of the non-woven fabric 3. A spring 13 is fixedly connected to the side of the locking block 603b away from the rotating block 602. The side of the spring 13 away from the locking block 603b is fixedly connected to the inner wall of the ring 603a.

[0038] As a technical optimization of this utility model, the protective net 12 can press and fix the position of the non-woven fabric 3 to prevent the non-woven fabric 3 from falling off the rainwater pipe 2. The spring 13 can make the locking block 603b always locked into the inner wall of the slot 11, and at the same time facilitate the reset of the locking block 603b and the sleeve 603c.

[0039] The working principle and usage process of this utility model are as follows: In use, the user rotates the handwheel 8 clockwise. The rotation of the handwheel 8 drives the positive and negative threaded screw 503a to rotate, which in turn moves the threaded sleeve 503b and the clamping block 502 outwards, causing the clamping block 502 to disengage from the dewatering pipe 2. Then, the user pulls the cover plate 501 upwards, causing it to disengage from the limiting groove 9 and the well pipe 1. At this time, the clamping block disassembles the cover plate 501. Afterwards, the user pulls the dewatering pipe 2 upwards, causing it to disengage from the well pipe 1, and then rotates the sleeve 6 clockwise. 03c, the sleeve 603c rotates, causing the locking block 603b to rotate, so that the locking block 603b disengages from the locking groove 11. The locking block 603b rotates to transport the spring 13, and then pulls the rotating block 602 outward, so that the rotating block 602 and the protective net 12 rotate outward around the rotating axis, so that the rotating block 602 and the protective net 12 disengage from the non-woven fabric 3. Finally, the non-woven fabric 3 is pulled outward, so that the non-woven fabric 3 disengages from the rainwater pipe 2. At this time, the non-woven fabric 3 can be disassembled. When fixing, the operation is reversed to fix the position of the non-woven fabric 3 and the rainwater pipe 2.

[0040] In summary, this deep foundation pit wellpoint dewatering pipe fixing device uses a fixing mechanism 6 to fix the position of the non-woven fabric 3, preventing the non-woven fabric 3 from detaching from the dewatering pipe 2. Then, the clamping mechanism 5 clamps and fixes the dewatering pipe 2 inside the well pipe 1, preventing the dewatering pipe 2 from tilting. This solves the problem that the fixing device cannot fix wellpoint dewatering pipes of different sizes during use, and that when pumping water from inside the wellpoint dewatering pipe, the water flow generated by pumping can easily cause the wellpoint dewatering pipe to shake and tilt, affecting the drainage of the wellpoint dewatering pipe.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deep foundation pit well point dewatering pipe fixing device, comprising a well pipe (1), wherein a dewatering pipe (2) is disposed inside the well pipe (1), wherein a non-woven fabric (3) is disposed on the surface of the dewatering pipe (2), and a pumping pipe (4) is disposed inside the dewatering pipe (2), characterized in that: A clamping mechanism (5) is located at the top of the well pipe (1). The clamping mechanism (5) includes a cover plate (501) located at the top of the well pipe (1). The inner wall of the cover plate (501) is slidably connected to the surface of the well pipe (1). The top of the dewatering pipe (2) extends to the top of the cover plate (501). Clamping blocks (502) are slidably connected to the front and rear sides of the right side of the inner wall of the cover plate (501). A moving component (503) is provided on the left side of the clamping block (502). The right side of the moving component (503) is connected to the clamping block (502). Left side fixed connection; fixing mechanism (6), the inner wall of the fixing mechanism (6) is fixedly connected to the bottom of the surface of the rainwater pipe (2), the fixing mechanism (6) includes a fixing frame (601), the inner wall of the fixing frame (601) is fixedly connected to the bottom of the surface of the rainwater pipe (2), a rotating shaft is fixedly connected to the side of the inner wall of the fixing frame (601) away from the rainwater pipe (2), a rotating block (602) is sleeved on the surface of the rotating shaft, a positioning component (603) is fixedly connected to the top of the surface of the rainwater pipe (2), and the top of the rotating block (602) penetrates into the interior of the positioning component (603).

2. The deep foundation pit wellpoint dewatering pipe fixing device according to claim 1, characterized in that: The movable component (503) includes a threaded rod (503a) with both positive and negative threads. The threaded rod (503a) is located on the left side of the clamping block (502). The front and rear sides of the surface of the threaded rod (503a) are threaded with threaded sleeves (503b). The right side of the threaded sleeves (503b) is fixedly connected to the left side of the clamping block (502). The front side of the threaded rod (503a) extends through to the front side of the cover plate (501).

3. The deep foundation pit wellpoint dewatering pipe fixing device according to claim 1, characterized in that: The positioning component (603) includes a ring (603a), the inner wall of which is fixedly connected to the top of the surface of the downpipe (2), a sleeve (603c) is fitted on the surface of the ring (603a), and a locking block (603b) is fixedly connected to each of the four corners inside the ring (603a). The inner wall of the sleeve (603c) is fixedly connected to the side of the locking block (603b) away from the downpipe (2), and the side of the locking block (603b) near the rotating block (602) extends into the interior of the rotating block (602).

4. The deep foundation pit wellpoint dewatering pipe fixing device according to claim 2, characterized in that: A bushing (7) is fitted on the back side of the surface of the positive and negative threaded screw (503a). The back side of the bushing (7) is fixedly connected to the inner wall of the cover plate (501). A handwheel (8) is fixedly connected to the front side of the positive and negative threaded screw (503a).

5. The deep foundation pit wellpoint dewatering pipe fixing device according to claim 3, characterized in that: The top of the well pipe (1) is provided with a limiting groove (9) that is used in conjunction with the cover plate (501), the surface of the ring (603a) is provided with a positioning groove (10) that is used in conjunction with the rotating block (602), and the top of the rotating block (602) is provided with a slot (11) that is used in conjunction with the locking block (603b).

6. The deep foundation pit wellpoint dewatering pipe fixing device according to claim 3, characterized in that: A protective net (12) is fixedly connected to the side of the rotating block (602) near the rainwater pipe (2). The side of the protective net (12) away from the rotating block (602) is in contact with the surface of the non-woven fabric (3). A spring (13) is fixedly connected to the side of the locking block (603b) away from the rotating block (602). The side of the spring (13) away from the locking block (603b) is fixedly connected to the inner wall of the ring (603a).

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