Steel pipe putting device for deep foundation pit dewatering well

Abstract

The utility model relates to the technical field of foundation pit dewatering wells, in particular to a steel pipe putting device for a deep foundation pit dewatering well. Comprising a dewatering well foundation, a sleeve and an adjusting device, a mounting frame is arranged on the surface of the dewatering well foundation, a driving motor is mounted on the surface of the upper end of the mounting frame, a hanging bracket is mounted at the output end of the driving motor, and the end, away from the driving motor, of the hanging bracket is fixedly connected with the sleeve through the adjusting device; the adjusting device comprises a fixing frame, the upper surface of the fixing frame is fixedly connected with the hanging bracket, the arc surface of the inner wall of the fixing frame is fixedly connected with a friction sleeve, the surface of the friction sleeve is connected with the inner wall of the sleeve in an inserted mode, and three extrusion rods penetrate through the arc surface of the fixing frame in a sliding mode; and the two ends of the three extrusion rods are fixedly connected with extrusion pads and limiting frames correspondingly. The steel pipe putting device for the dewatering well of the deep foundation pit has the advantage that the steel pipe in the dewatering well foundation pit can be fixed, put and protected conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit dewatering wells, in particular to a steel pipe placing device for deep foundation pit dewatering wells. Background Technique

[0002] Foundation pit dewatering is a key operation in foundation pit engineering. Its operation time starts from the earth excavation of foundation pit engineering and ends when the underground main structure construction is completed or the above-ground structure reaches a certain height to meet the anti-floating requirements of the structure. The integrity of the dewatering well structure determines the effect of foundation pit dewatering operation, directly affecting the safety of underground projects, and is relatively common in the earth excavation of deep foundation pits in building water conservancy.

[0003] In the prior art, such as the utility model with the publication number of CN217352559U, this patent discloses a deep foundation pit dewatering well. The deep foundation pit dewatering well is composed of several pipe barrels stacked together. An iron ring is arranged at the top of the side wall of the pipe barrel, and an annular tongue-and-groove is arranged on the iron ring. A convex part is arranged at the bottom end of the side wall of the pipe barrel. The width of the convex part is less than or equal to the width of the annular tongue-and-groove on the iron ring, and the height of the convex part is less than or equal to the depth of the annular tongue-and-groove. During the stacking process of adjacent pipe barrels, the convex part of the top pipe barrel is clamped into the iron ring tongue-and-groove of the bottom pipe barrel to complete the clamping between the pipe barrels. For the deep foundation pit dewatering well of this utility model, through the structural design of the pipe barrel, rapid connection between each pipe barrel can be realized, and the positioning is accurate and the pipeline is not damaged; further, in the connection process between the pipe barrels, processes such as concrete and welding are not adopted, so the pipeline will not be damaged and there is a possibility of recycling.

[0004] It is found in construction projects that during the earth excavation operation of foundation pit engineering, due to external factors such as unclear position marking of dewatering wells and inadequate construction management, the soil around the dewatering well will collapse into the well, resulting in siltation or even landfill of the dewatering well. At this time, it is necessary to use steel pipes for dewatering wells for lining protection, and at this time, it is easy to have the problem of inconvenient fixed placement and protection of the steel pipes. Content of the Utility Model

[0005] The purpose of the utility model is to solve the defect in the prior art that due to external factors such as unclear position marking of dewatering wells and inadequate construction management, the soil around the dewatering well will collapse into the well, resulting in siltation or even landfill of the dewatering well. At this time, it is necessary to use steel pipes for dewatering wells for lining protection, and at this time, it is easy to have the problem of inconvenient fixed placement and protection of the steel pipes.

[0006] To solve the above technical problems, the utility model provides a steel pipe placing device for deep foundation pit dewatering wells, including: a dewatering well foundation, a casing, and an adjusting device. An installation frame is arranged on the surface of the dewatering well foundation. A driving motor is installed on the upper surface of the installation frame. A hanging frame is installed at the output end of the driving motor. One end of the hanging frame away from the driving motor is fixedly connected to the casing by means of the adjusting device. The casing is a steel pipe. The adjusting device includes a fixed frame. The upper surface of the fixed frame is fixedly connected to the hanging frame. An arc surface of the inner wall of the fixed frame is fixedly connected with a friction sleeve. The surface of the friction sleeve is inserted into the inner wall of the casing. Three pressing rods slidably penetrate through the arc surface of the fixed frame. Both ends of the three pressing rods are respectively fixedly connected with pressing pads and limiting frames. The pressing pads are rubber pads. The surface of the pressing pads abuts against the arc surface of the casing. The cross-section of the limiting frame is in a "U" shape. The inner walls of the three limiting frames are clamped with the same connecting ring. The cross-section of the connecting ring is in a "C" shape. One end of the connecting ring is rotatably connected with a rotating rod. One end of the rotating rod is rotatably connected with a rotating plate. A screw rod threadedly penetrates through the surface of the rotating plate. The other end of the connecting ring is fixedly connected with a positioning frame. One end of the screw rod is inserted into the inner wall of the positioning frame.

[0007] The effects achieved by the above components are as follows: When clamping and limiting the casing at the bottom end of the entire hanging frame, so that the casing descends into the dewatering well for protection. At this time, through the fixed frame fixed on the surface of the hanging frame, the fixed frame is inserted into the casing, and then the position of the pressing rod sliding on the surface of the fixed frame is moved by means of the connecting ring, so as to effectively and conveniently squeeze and limit the upper surface of the casing and avoid the detachment of the casing.

[0008] Preferably, a spring is sleeved on the arc surface of the pressing rod. Both ends of the spring are respectively fixedly connected with the limiting frame and the fixed frame.

[0009] The effects achieved by the above components are as follows: The position of the pressing rod can be stretched and limited by the tensile force generated by the spring, avoiding the detachment of the pressing rod.

[0010] Preferably, a limiting block is fixedly connected to the position of the connecting ring corresponding to the positioning frame. The cross-section of the limiting block is in an arc shape.

[0011] The effects achieved by the above components are as follows: The screw rod can be slidably limited by means of the arc-shaped limiting block, facilitating better extrusion, guiding and docking operations.

[0012] Preferably, an auxiliary frame is fixedly connected to the inner wall of the fixed frame. One end of the auxiliary frame close to the casing is in an arc shape in cross-section. The surface of the auxiliary frame slidably penetrates through the pressing rod.

[0013] The effects achieved by the above components are as follows: When the casing is docked, the auxiliary frame with an arc-shaped cross-section in the fixed frame can effectively guide and limit the casing.

[0014] Preferably, an auxiliary device is provided at a position corresponding to the casing on the surface of the foundation of the precipitation well. The auxiliary device includes a base, the lower surface of the base abuts against the surface of the foundation of the precipitation well, a guiding frame is fixedly connected to the upper surface of the base, three connecting holes are evenly formed in the arc surface of the guiding frame, and limiting plates are fixedly connected to the upper ends of the inner walls of the three connecting holes. The cross-section of the limiting plate is "V"-shaped, and the limiting plate is an elastic plate.

[0015] The effects achieved by the above components are as follows: When placing and protecting and limiting the steel casing on the inner wall of the precipitation well, in order to facilitate guiding the descending position of the casing, at this time, the guiding frame on the surface of the foundation of the precipitation well is used for assistance, and at the same time, the limiting plate made of elastic material on the arc surface of the guiding frame is used for extrusion and guidance, which is convenient for the settlement operation of the casing.

[0016] Preferably, a pulley is rotatably connected to the inner wall surface of the limiting plate, and the cross-sectional size of the pulley is adapted to the cross-sectional size of the connecting hole.

[0017] The effects achieved by the above components are as follows: The pulley on the surface of the limiting plate can facilitate the sliding guidance when the casing descends.

[0018] Preferably, a counterweight is fixedly connected to the inner wall of the base, and the counterweight is a lead block.

[0019] The effects achieved by the above components are as follows: When supporting and fixing the entire guiding frame and the base, the counterweight fixed to the inner wall of the base and made of lead can be used to increase the weight.

[0020] Compared with the related technology, a steel pipe placing device for a deep foundation pit precipitation well provided by the present invention has the following beneficial effects:

[0021] The utility model provides a steel pipe placing device for deep foundation pit dewatering wells. The steel pipe is placed inside the well pipe of the dewatering well. The length of the steel pipe is determined according to the layered thickness of the earth excavation, and its top elevation is slightly higher than the wellhead elevation. The built-in steel pipe is placed on the wellhead through a horizontal limiting steel pipe frame with a length greater than the diameter of the dewatering well wellhead. As the earth excavation progresses and the filter pipe is removed, the built-in steel pipe is gradually lowered until the earth excavation reaches the design elevation. At the same time, the built-in steel pipe can be recycled and used for the closing operation of the dewatering well. By operating the adjusting device, the fixing frame fixed on the surface of the hanging frame can be adjusted. The fixing frame is inserted into the sleeve, and then the position of the extrusion rod sliding on the surface of the fixing frame is moved by means of the connecting ring, so as to effectively and conveniently extrude and limit the upper surface of the sleeve, avoiding the falling off of the sleeve. At the same time, due to the protection of the built-in steel pipe, the well pipe structure fragments and the soil around the dewatering well will not collapse into the dewatering well, effectively protecting the dewatering well and ensuring the overall dewatering effect of the foundation pit.

[0022] When placing and protecting the limit of the inner wall of the dewatering well with a steel sleeve, in order to facilitate the guidance of the descending position of the sleeve, at this time, the guiding frame on the surface of the dewatering well foundation is used for assistance, and at the same time, the limiting plate made of elastic material on the arc surface of the guiding frame is used for extrusion guidance. By operating the auxiliary device, the settlement protection operation of the sleeve is achieved. The limiting plate made of elastic material in the guiding frame is used for extrusion fixation to avoid the deviation of the sleeve position, and at the same time, the pulley rotating on the inner wall of the limiting plate is used for sliding guidance assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a steel pipe placing device for deep foundation pit dewatering wells provided by the utility model;

[0024] Figure 2 is Figure 1 a schematic structural diagram of the adjusting device shown;

[0025] Figure 3 is Figure 2 a schematic partial structural diagram of the adjusting device shown;

[0026] Figure 4 is Figure 3 a schematic split structural diagram of the adjusting device shown;

[0027] Figure 5 is Figure 1 a schematic structural diagram of the auxiliary device shown;

[0028] Figure 6 is Figure 5 a schematic partial structural diagram of the auxiliary device shown.

[0029] Reference numerals in the figure: 1, precipitation well foundation; 2, mounting frame; 3, drive motor; 4, adjusting device; 401, fixed frame; 402, extrusion rod; 403, limiting frame; 404, extrusion pad; 405, spring; 406, friction sleeve; 407, auxiliary frame; 408, connecting ring; 409, rotating rod; 410, rotating plate; 411, screw rod; 412, limiting block; 413, positioning frame; 5, auxiliary device; 51, guiding frame; 52, base; 53, connecting hole; 54, limiting plate; 55, pulley; 56, counterweight; 6, casing; 7, hanging frame. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] The specific implementation of the present utility model will be described in detail below in conjunction with specific embodiments.

[0032] Please refer to Figures 1 to 6 , a steel pipe placing device for a deep foundation pit precipitation well provided by an embodiment of the present utility model includes: a precipitation well foundation 1, a casing 6, and an adjusting device 4. A mounting frame 2 is arranged on the surface of the precipitation well foundation 1, a drive motor 3 is installed on the upper surface of the mounting frame 2, a hanging frame 7 is installed at the output end of the drive motor 3, and one end of the hanging frame 7 away from the drive motor 3 is fixedly connected to the casing 6 by means of the adjusting device 4. The casing 6 is a steel pipe, and an auxiliary device 5 is arranged on the surface of the precipitation well foundation 1 corresponding to the position of the casing 6.

[0033] In an embodiment of the present utility model, please refer to Figure 2 , Figure 3 and Figure 4, the adjusting device 4 includes a fixed frame 401. The upper surface of the fixed frame 401 is fixedly connected to the hanging frame 7. The inner wall arc surface of the fixed frame 401 is fixedly connected with a friction sleeve 406. The surface of the friction sleeve 406 is inserted into the inner wall of the sleeve 6. Three extrusion rods 402 slidably penetrate through the arc surface of the fixed frame 401. Both ends of the three extrusion rods 402 are fixedly connected with extrusion pads 404 and limiting frames 403 respectively. The extrusion pads 404 are rubber pads. The surface of the extrusion pads 404 abuts against the arc surface of the sleeve 6. The cross-section of the limiting frame 403 is in a "U" shape. The same connecting ring 408 is clamped inside the three limiting frames 403. The cross-section of the connecting ring 408 is in a "C" shape. One end of the connecting ring 408 is rotatably connected with a rotating rod 409. One end of the rotating rod 409 is rotatably connected with a rotating plate 410. A screw rod 411 threadedly penetrates through the surface of the rotating plate 410. The other end of the connecting ring 408 is fixedly connected with a positioning frame 413. The inner wall of the positioning frame 413 is inserted with one end of the screw rod 411. A spring 405 is sleeved on the arc surface of the extrusion rod 402. Both ends of the spring 405 are fixedly connected with the limiting frame 403 and the fixed frame 401 respectively. A limiting block 412 is fixedly connected to the position of the connecting ring 408 corresponding to the positioning frame 413. The cross-section of the limiting block 412 is in an arc shape. The inner wall of the fixed frame 401 is fixedly connected with an auxiliary frame 407. One end of the auxiliary frame 407 close to the sleeve 6 has an arc-shaped cross-section. The surface of the auxiliary frame 407 slidably penetrates through the extrusion rod 402;

[0034] In an embodiment of the present invention, please refer to Figure 5 and Figure 6 , the auxiliary device 5 includes a base 52. The lower surface of the base 52 abuts against the surface of the precipitation well foundation 1. The upper surface of the base 52 is fixedly connected with a guiding frame 51. Three connecting holes 53 are evenly opened on the arc surface of the guiding frame 51. Upper ends of the inner walls of the three connecting holes 53 are fixedly connected with limiting plates 54. The cross-section of the limiting plate 54 is in a "V" shape. The limiting plate 54 is an elastic plate. A pulley 55 is rotatably connected to the inner wall surface of the limiting plate 54. The cross-sectional dimension of the pulley 55 is adapted to the cross-sectional dimension of the connecting hole 53. A counterweight 56 is fixedly connected to the inner wall of the base 52. The counterweight 56 is a lead block;

[0035] The working principle of a steel pipe placing device for deep foundation pit dewatering wells provided by the present utility model is as follows: When protecting the inner wall of the dewatering well, it is necessary to use a casing 6 made of steel for auxiliary support and protection. At this time, when sinking the casing 6, first insert the casing 6 into the fixing frame 401 on the surface of the hanging frame 7, and let the casing 6 be guided by the auxiliary frame 407. Then insert it into the friction sleeve 406 in the fixing frame 401 for limit. After that, connect the connecting ring 408 with the limit frame 403 at one end of the pressing rod 402 that slides through the surface of the fixing frame 401. Then butt the two ends of the connecting plate with a "C" - shaped cross - section. Rotate the rotating rod 409 at one end of the connecting ring 408, and slide the screw 411 at one end of the rotating rod 409 along the limit block 412 until it is inserted into the positioning frame 413. Then rotate the screw 411 to squeeze and bind the entire connecting ring 408, so that the pressing rod 402 can better squeeze and fix the arc surface of the casing 6.

[0036] When placing the entire long casing 6 into the dewatering well, with the assistance of a guiding frame 51 with an arc - shaped cross - section, first place the guiding frame 51 under the casing 6 through the base 52. Then when the casing 6 descends, use the guiding frame 51 for guidance, and at the same time, squeeze the limiting plate 54 made of elastic material in the guiding frame 51. Then let the pulley 55 rotating on the inner wall of the limiting plate 54 slide along the surface of the casing 6 to prevent the entire casing 6 from shifting in the descending position.

[0037] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0038] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A steel pipe placing device for deep foundation pit dewatering wells, characterized in that, Including: A precipitation well foundation (1), a casing (6) and an adjusting device (4). An installation frame (2) is arranged on the surface of the precipitation well foundation (1). A driving motor (3) is installed on the upper surface of the installation frame (2). A hanging frame (7) is installed at the output end of the driving motor (3). One end of the hanging frame (7) far from the driving motor (3) is fixedly connected to the casing (6) by means of the adjusting device (4). The casing (6) is a steel pipe. The adjusting device (4) includes a fixed frame (401). The upper surface of the fixed frame (401) is fixedly connected to the hanging frame (7). A friction sleeve (406) is fixedly connected to the inner arc surface of the fixed frame (401). The surface of the friction sleeve (406) is inserted into the inner wall of the casing (6). Three pressing rods (402) slidably penetrate through the arc surface of the fixed frame (401). Both ends of the three pressing rods (402) are respectively fixedly connected with a pressing pad (404) and a limiting frame (403). The pressing pad (404) is a rubber pad. The surface of the pressing pad (404) abuts against the arc surface of the casing (6). The cross section of the limiting frame (403) is in a "U" shape. The same connecting ring (408) is clamped in the inner walls of the three limiting frames (403). The cross section of the connecting ring (408) is in a "C" shape. One end of the connecting ring (408) is rotatably connected with a rotating rod (409). One end of the rotating rod (409) is rotatably connected with a rotating plate (410). A screw rod (411) threadedly penetrates through the surface of the rotating plate (410). The other end of the connecting ring (408) is fixedly connected with a positioning frame (413). One end of the screw rod (411) is inserted into the inner wall of the positioning frame (413).

2. The steel pipe placing device for deep foundation pit dewatering well according to claim 1, wherein, A spring (405) is sleeved on the arc surface of the pressing rod (402). Both ends of the spring (405) are respectively fixedly connected with the limiting frame (403) and the fixed frame (401).

3. The steel pipe placing device for deep foundation pit dewatering well according to claim 1, wherein, A limiting block (412) is fixedly connected to the position of the connecting ring (408) corresponding to the positioning frame (413). The cross section of the limiting block (412) is in an arc shape.

4. The steel pipe placing device for deep foundation pit dewatering wells according to claim 1, characterized in that, An auxiliary frame (407) is fixedly connected to the inner wall of the fixed frame (401). One end of the auxiliary frame (407) close to the casing (6) has an arc-shaped cross section. The surface of the auxiliary frame (407) is slidably penetrated by the pressing rod (402).

5. The steel pipe placing device for deep foundation pit dewatering well according to claim 1, characterized in that, An auxiliary device (5) is arranged on the surface of the precipitation well foundation (1) corresponding to the position of the casing (6). The auxiliary device (5) includes a base (52). The lower surface of the base (52) abuts against the surface of the precipitation well foundation (1). A guiding frame (51) is fixedly connected to the upper surface of the base (52). Three connecting holes (53) are evenly formed in the arc surface of the guiding frame (51). Limiting plates (54) are fixedly connected to the upper ends of the inner walls of the three connecting holes (53). The cross section of the limiting plate (54) is in a "V" shape. The limiting plate (54) is an elastic plate.

6. The steel pipe placing device for deep foundation pit dewatering well according to claim 5, characterized in that, A pulley (55) is rotatably connected to the inner wall surface of the limiting plate (54), and the cross-sectional dimension of the pulley (55) is adapted to the cross-sectional dimension of the connection hole (53).

7. A steel pipe placing device for deep foundation pit dewatering wells according to claim 5, characterized in that, A counterweight (56) is fixedly connected to the inner wall of the base (52), and the counterweight (56) is a lead block.

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