Subway deep foundation pit dewatering well dredging device

Abstract

The utility model discloses a subway deep foundation pit dewatering well desilting device which comprises a desilting pipe, the top end of the desilting pipe is fixedly communicated with a lowering hose used for being fixedly communicated with an extraction opening of an external sludge pump, and a movable positioning desilting mechanism used for positioning and scraping the side wall of a subway deep foundation pit dewatering well is installed on the desilting pipe. The movable positioning desilting mechanism comprises a fixing sleeve fixedly arranged on the outer side of the silt pumping pipe in a sleeving mode. According to the utility model, a series of structures are arranged, so that the silt pumping pipe at the lower part can be conveniently positioned and prevented from shaking in subway deep foundation pit dewatering wells with different inner diameters in a multi-point expanding, extruding, supporting and positioning manner, the phenomenon that the bottom end of the silt pumping pipe swings back and forth to influence the stability of suction and dredging in the use process is effectively avoided, and the use stability is improved; and sludge attached and accumulated to the walls of dewatering wells with different inner diameters can be effectively and rotatably scraped away conveniently, the phenomenon that a large amount of sludge is attached to the walls of the dewatering wells to affect subsequent dewatering work again is avoided, and the applicability and the dredging effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of dredging equipment technology, specifically a dredging device for a deep foundation pit dewatering well in a subway. Background Technology

[0002] The purpose of dewatering wells is to drain groundwater below the foundation pit and lower the groundwater level. Dewatering wells vary in depth; deep foundation pit dewatering wells are required in subway projects. After a period of use, silt accumulates on the bottom and walls of the dewatering wells, necessitating the use of sludge removal equipment. Current sludge removal equipment involves submerging the bottom of a suction pipe into the silt within the dewatering well and using a sludge pump to extract and remove the silt through the suction pipe. However, this method has the following shortcomings:

[0003] 1. The silt adhering to and accumulating on the well wall cannot be effectively cleaned, and the large amount of silt remaining on the well wall affects subsequent dewatering work; 2. There is a lack of a structure for positioning and supporting the lower part of the suction pipe to prevent swaying, and the bottom of the suction pipe is prone to swaying back and forth during the suction process, affecting the stability of the silt removal process; Therefore, this application proposes a silt removal device for subway deep foundation pit dewatering wells to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a device for dredging deep foundation pits in subways to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sludge removal device for a deep foundation pit dewatering well in a subway, comprising a sludge suction pipe, the top end of which is connected and fixed with a lowering hose for connecting and fixing with the extraction port of an external sludge pump; a movable positioning and sludge removal mechanism for positioning and scraping the sidewall of the deep foundation pit dewatering well in the subway is installed on the sludge suction pipe; the sludge suction pipe and the lowering hose are used to connect to an external sludge pump and perform sludge removal work when the pump is turned on;

[0006] The mobile positioning dredging mechanism includes a fixed sleeve fixedly fitted on the outside of the dredging pipe. A fixed box is fixedly fitted on the outside of the fixed sleeve. An electric push rod is fixedly installed on the top inner wall of the fixed box. The extended end of the electric push rod extends movably to the top of the fixed box and is fixedly connected to a lifting sleeve slidably fitted on the outside of the fixed sleeve. A multi-point expansion mobile positioning component is installed between the top of the lifting sleeve and the outside of the fixed sleeve. The multi-point expansion mobile positioning component is used to expand at multiple points and squeeze tightly against the inner wall of the subway deep foundation pit dewatering well when the electric push rod starts to drive the lifting sleeve, to perform squeezing and positioning, and to move downward by its own weight when the lowering hose is lowered.

[0007] A turntable is rotatably mounted on the outer bottom of the fixed sleeve. Telescopic scraping components for scraping the sidewalls of the dewatering wells in the deep foundation pit of the subway are installed on all four sides of the turntable. A rotary drive component that is in movable contact with the bottom of the fixed box is fixedly connected to the top of the turntable. A drive motor with an output shaft fixedly connected to the rotary drive component is fixedly installed on the bottom inner wall of the fixed box. The rotary drive component is used to drive the turntable to rotate when the drive motor is started. The telescopic scraping component is used to adjust the scraping diameter according to the dewatering wells with different inner diameters and to scrape the silt accumulated on the sidewalls of the dewatering wells when the turntable rotates.

[0008] Preferably, the multi-point expansion and positioning assembly includes four vertical guide rods fixedly connected in a ring at equal intervals to the top of the lifting sleeve and surrounding the fixed sleeve. Two supports are fixedly connected to each of the four sides of the fixed sleeve. The two supports on the same side are slidably sleeved on the corresponding vertical guide rods. An inclined support rod is hinged to the side of the support away from the fixed sleeve. The two opposite support rods are symmetrically arranged. A roller is rotatably installed at the bottom of the support rod. An anti-slip rubber sleeve is adhesively sleeved on the outside of the roller. Two inclined connecting rods are hinged to the side of the vertical guide rod away from the fixed sleeve. The two opposite connecting rods are symmetrically arranged. The top of the connecting rod is hinged to the side of the corresponding support rod near the fixed sleeve.

[0009] Preferably, the telescopic scraping assembly includes a horizontal guide rod, one side of which is provided with a scale line, and rectangular guide grooves are provided on all four sides of the turntable. The rectangular guide grooves are slidably sleeved on the corresponding horizontal guide rods. The bottom of the horizontal guide rod is in movable contact with a knob-type bolt, and the turntable is threaded onto the four knob-type bolts. A scraper is fixedly connected to the end of the horizontal guide rod away from the fixed sleeve.

[0010] Preferably, the rotary drive assembly includes an internal gear ring fixedly connected to the top of the turntable, the inner left side of the internal gear ring being engaged with a gear fixedly connected to the bottom end of the output shaft of the drive motor, and the top of the internal gear ring being in movable contact with the bottom of the fixed box.

[0011] Preferably, a storage battery is fixedly installed on the left inner wall of the fixed box, and the drive motor and electric push rod are both electrically connected to the storage battery.

[0012] Preferably, the top of the support has a vertical guide hole that slides and fits onto the outer side of the corresponding vertical guide rod.

[0013] Preferably, the bottom inner wall of the rectangular guide groove is provided with a threaded hole that is threaded to connect with the corresponding knob bolt.

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

[0015] 1. By using the combination of the sludge suction pipe and the lowering hose, when the sludge suction pipe is lowered to the lowest point inside the dewatering well of the deep foundation pit of the subway through the lowering hose, and when the lowering hose is connected to an external sludge pump, the sludge can be extracted and discharged, thus realizing the sludge removal work of the dewatering well.

[0016] 2. By using a combination of a suction pipe, a lowering hose, a fixing sleeve, a fixing box, an electric push rod, a lifting sleeve, and a multi-point expansion and positioning component, the lower suction pipe can be positioned and prevented from swaying in the dewatering wells of deep foundation pits of subways with different inner diameters, without affecting the normal lowering work. This ensures high applicability and effectively avoids the phenomenon of the bottom of the suction pipe swinging back and forth during use, which affects the stability of suction and sludge removal, thus improving the stability of use.

[0017] 3. Through the combination of the fixed sleeve, fixed box, drive motor, turntable, telescopic scraping component and rotary drive component, it can effectively rotate and scrape away the silt adhering to the well wall of dewatering wells with different inner diameters, avoiding the phenomenon that a large amount of silt remains on the well wall and affects subsequent dewatering work, thus improving applicability and silt removal effect.

[0018] This utility model, through a series of structures, facilitates the positioning and anti-swaying of the lower sludge suction pipe in dewatering wells of different inner diameters in subway deep foundation pits by means of multi-point expansion and squeezing support positioning. It effectively avoids the phenomenon of the bottom end of the sludge suction pipe swinging back and forth during use, affecting the stability of sludge suction and cleaning, thus improving the stability of use. It also facilitates the effective rotation and scraping of sludge adhering to the well wall of dewatering wells of different inner diameters, avoiding the phenomenon of a large amount of sludge adhering to the well wall affecting subsequent dewatering work, thus improving applicability and sludge removal effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a dredging device for a deep foundation pit in a subway, as proposed in this utility model.

[0020] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0021] Figure 3 This is a front view sectional view of the dredging device for a subway deep foundation pit dewatering well, as proposed in this utility model, located inside the subway deep foundation pit dewatering well.

[0022] Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram.

[0023] In the diagram: 1. Suction pipe; 101. Lowering hose; 2. Fixing sleeve; 3. Turntable; 301. Horizontal guide rod; 302. Scraper; 303. Knob bolt; 4. Fixing box; 5. Internal gear ring; 501. Gear; 502. Drive motor; 6. Electric push rod; 601. Lifting sleeve; 7. Support; 701. Vertical guide rod; 702. Connecting rod; 703. Support rod; 704. Roller; 705. Anti-slip rubber sleeve. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 4 As shown in the figure, the sludge removal device for the dewatering well of the subway deep foundation pit proposed in this embodiment includes a sludge suction pipe 1. The top end of the sludge suction pipe 1 is connected and fixed with a lowering hose 101 for connecting and fixing with the external sludge pump extraction port. A mobile positioning and sludge removal mechanism for positioning and scraping the side wall of the subway deep foundation pit dewatering well is installed on the sludge suction pipe 1. The sludge suction pipe 1 and the lowering hose 101 are used to connect to the external sludge pump and perform sludge suction work when the pump is turned on.

[0026] The mobile positioning dredging mechanism includes a fixed sleeve 2 fixedly sleeved on the outside of the dredging pipe 1, a fixed box 4 fixedly sleeved on the outside of the fixed sleeve 2, an electric push rod 6 fixedly installed on the top inner wall of the fixed box 4, the extended end of the electric push rod 6 movably protruding to the top of the fixed box 4 and fixedly connected to a lifting sleeve 601 slidably sleeved on the outside of the fixed sleeve 2, wherein a circular through hole is opened on the top right side of the fixed box 4, and a sealing ring is glued and sleeved in the circular through hole, the inner side of the sealing ring is in contact with the outer side of the extended end of the electric push rod 6, so as to achieve the effect of sealing the extended end of the electric push rod 6 through. A multi-point expansion mobile positioning component is installed between the top of the lifting sleeve 601 and the outer side of the fixed sleeve 2; the multi-point expansion mobile positioning component is used to expand at multiple points and squeeze the lifting sleeve 601 with the inner wall of the subway deep foundation pit dewatering well when the electric push rod 6 starts to drive it, to perform squeezing and positioning, and to move downward by its own weight when the lowering hose 101 is lowered;

[0027] A turntable 3 is rotatably mounted on the outer bottom of the fixed sleeve 2. A circular hole is opened at the top of the turntable 3, and two bearings are fixedly mounted inside the circular hole. The inner rings of the bearings are fixedly mounted on the outer side of the fixed sleeve 2, thus enabling the turntable 3 to rotate. Telescopic scraping components for scraping the sidewalls of the dewatering wells in the deep foundation pit of the subway are installed on all four sides of the turntable 3. A rotary drive assembly is fixedly connected to the top of the turntable 3 and makes movable contact with the bottom of the fixed box 4. A drive motor 502 with an output shaft fixedly connected to the rotary drive assembly is fixedly mounted on the inner wall of the bottom of the fixed box 4. The left inner wall of the fixed box 4... A battery is fixedly installed on the top, and the drive motor 502 and the electric push rod 6 are electrically connected to the battery to supply power to the drive motor 502 and the electric push rod 6. The front side of the drive motor 502 and the electric push rod 6 are fixed and electrically connected to a wireless remote control switch. Both wireless remote control switches are matched with an external remote control. The rotary drive assembly is used to drive the turntable 3 to rotate when the drive motor 502 starts. The telescopic scraping assembly is used to adjust the scraping diameter according to the different inner diameters of the dewatering wells, and is used to scrape and clean the silt accumulated on the side wall of the dewatering well when the turntable 3 rotates.

[0028] Specifically, the multi-point expansion and positioning assembly includes four vertical guide rods 701 fixedly connected in a ring at equal intervals to the top of the lifting sleeve 601 and surrounding the fixed sleeve 2. Two supports 7 are fixedly connected to each of the four sides of the fixed sleeve 2. Two supports 7 on the same side are slidably fitted onto the corresponding vertical guide rods 701. The top of each support 7 has a vertical guide hole that slides onto the outer side of the corresponding vertical guide rod 701, providing vertical sliding guidance for the vertical guide rod 701. An inclined support rod 703 is hinged to the side of each support 7 away from the fixed sleeve 2. Two opposing support rods 703 are symmetrically arranged. A roller 704 is rotatably mounted at the bottom of each support rod 703. An anti-slip rubber sleeve 705 is adhesively fitted onto the outer side of each roller 704. Two inclined connecting rods 702 are hinged to the side of each vertical guide rod 701 away from the fixed sleeve 2. Two opposing connecting rods 702 are symmetrically arranged. The top of each connecting rod 702 is hinged to the side of the corresponding support rod 703 closest to the fixed sleeve 2. The vertical guide rods 701, supports 7, support rods 703, rollers 704, anti-slip rubber sleeves 705, and connecting rods 702 work together to drive the four vertical guide rods 701 upward when the lifting sleeve 601 moves upward. The four vertical guide rods 701 drive the eight connecting rods 702 to synchronously rotate and compress the eight support rods 703 outward. Under the compressive force, the eight support rods 703 rotate outward synchronously, and drive the eight rollers 704 to synchronously expand outward. The eight rollers 704 drive the eight anti-slip rubber sleeves 705 and connecting rods 702 to move outward synchronously. The sliding rubber sleeve 705 provides eight-point support on the side wall of the dewatering well in the deep foundation pit of the subway, achieving the effect of multi-point expansion support positioning and anti-swaying, avoiding rotation or shaking of the fixed sleeve 2. Utilizing the rotatable characteristic of the roller 704, when lowering the hose 101, it uses its own weight to move downwards by rotating the roller 704. Furthermore, the expandable and adjustable method of multiple rollers 704 facilitates the application of support positioning and anti-swaying work in dewatering wells of different specifications.

[0029] Furthermore, the telescopic scraping assembly includes a horizontal guide rod 301, with a scale line on one side. Rectangular guide grooves are provided on all four sides of the turntable 3, and these grooves slide onto the corresponding horizontal guide rods 301. A knob-type bolt 303 is movably contacted at the bottom of the horizontal guide rod 301. The turntable 3 is threaded onto the four knob-type bolts 303. A threaded hole is provided on the inner bottom wall of the rectangular guide groove, which is threaded to connect with the corresponding knob-type bolt 303. A scraper 302 is fixedly connected to the end of the horizontal guide rod 301 away from the fixed sleeve 2. The rectangular guide grooves, horizontal guide rods 301, knob-type bolts 303, and scraper 302 work together to rotate in opposite directions. The button bolt 303 releases the lock on the horizontal guide rod 301, and the scraper 302 is pulled outward to drive the corresponding horizontal guide rod 301 to slide outward in the rectangular guide groove, thereby adjusting the outer diameter of the scraping formed by the four scrapers 302. The button bolt 303 is rotated in the forward direction to press and lock the horizontal guide rod 301. When the turntable 3 rotates, the four horizontal guide rods 301 drive the four scrapers 302 to rotate and scrape the silt accumulated on the side wall of the dewatering well. With the support positioning and downward movement, the silt on the entire side wall of the dewatering well is gradually cleaned from top to bottom. The adjustable outer diameter of the four scrapers 302 makes it convenient to scrape the inner wall of dewatering wells of different specifications.

[0030] Furthermore, the rotary drive assembly includes an internal gear ring 5 fixedly connected to the top of the turntable 3. The inner left side of the internal gear ring 5 is meshed with a gear 501 fixedly connected to the bottom end of the output shaft of the drive motor 502. The top of the internal gear ring 5 is in movable contact with the bottom of the fixed box 4. The internal gear ring 5 and the gear 501 cooperate, and the drive motor 502 drives the gear 501 to rotate. The gear 501 drives the internal gear ring 5 to rotate, and the rotation of the internal gear ring 5 drives the turntable 3 to rotate.

[0031] The usage method of this embodiment is as follows: When using the sludge removal device for the deep foundation pit dewatering well of the subway, firstly, adjust the diameter formed by the four scrapers 302 according to the inner diameter of the deep foundation pit dewatering well. During adjustment, rotate the four knob bolts 303 in the reverse direction to release the locking of the horizontal guide rod 301, and pull the four scrapers 302 outward so that they respectively drive the corresponding horizontal guide rods 301 to slide outward in the rectangular guide groove, thereby adjusting the outer diameter of the scraping formed by the four scrapers 302. After the adjustment is appropriate, rotate the knob bolts 303 in the forward direction to press and lock the horizontal guide rods 301. Lower the device into the dewatering well through the lowering hose 101, and start the electric push rod 6 in the forward direction to drive the lifting sleeve 601 to move upward. The lifting sleeve 601 drives the four vertical guide rods 701 to slide upward in the corresponding two supports 7. The four vertical guide rods 701... The eight connecting rods 702 synchronously rotate and compress the eight support rods 703 outwards. Under the compressive force, the eight support rods 703 rotate outwards synchronously, driving the eight rollers 704 to expand and move outwards synchronously. The eight rollers 704 drive the eight anti-slip rubber sleeves 705 to provide eight-point support on the side wall of the subway deep foundation pit dewatering well, achieving the effect of multi-point expansion, compression, positioning, and anti-swaying. Utilizing the rotatable characteristic of the rollers 704, when lowering the hose 101, it uses its own weight to move downwards through the rotation of the rollers 704. Through the multi-point expansion, compression, positioning, and anti-swaying method, the phenomenon of the bottom end of the sludge suction pipe 1 swinging back and forth during use, affecting the stability of sludge suction and dredging, is effectively avoided. Furthermore, the expansion and adjustment method facilitates the application of compression, positioning, and anti-swaying work in dewatering wells of different specifications, improving applicability.

[0032] During the pre-dredging and lowering process, the drive motor 502 is turned on to rotate the drive gear 501. The gear 501 drives the internal gear ring 5 to rotate, which in turn drives the turntable 3 to rotate. The turntable 3 drives four scrapers 302 to rotate through four horizontal guide rods 301 to scrape and clean the silt accumulated on the side wall of the dewatering well. Combined with the squeezing support positioning and lowering operation, the silt on the side wall of the entire dewatering well is gradually cleaned from top to bottom. This effectively cleans the silt adhering to the well wall and avoids the phenomenon of a large amount of silt remaining on the well wall affecting subsequent dewatering operations. Furthermore, the adjustable outer diameter of the four scrapers 302 makes it convenient to scrape the inner wall of dewatering wells of different sizes, improving applicability and dredging effect.

[0033] When the sludge is lowered to the bottom for dredging, the top of the lowering hose 101 is connected to the suction port of the external sludge pump. The sludge pump is then used to extract and discharge the sludge through the lowering hose 101 and the dredging pipe 1 in sequence, thereby completing the dredging work of the dewatering well.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sludge removal device for a deep foundation pit in a subway, comprising a sludge suction pipe (1), wherein the top end of the sludge suction pipe (1) is connected and fixed with a lowering hose (101) for connection and fixation with an external sludge pump extraction port, characterized in that: The dredging pipe (1) is equipped with a mobile positioning and dredging mechanism for positioning and scraping the side wall of the dewatering well in the deep foundation pit of the subway. The mobile positioning dredging mechanism includes a fixed sleeve (2) fixedly sleeved on the outside of the dredging pipe (1), a fixed box (4) fixedly sleeved on the outside of the fixed sleeve (2), an electric push rod (6) fixedly installed on the top inner wall of the fixed box (4), the protruding end of the electric push rod (6) movably protrudes to the top of the fixed box (4) and is fixedly connected to a lifting sleeve (601) slidably sleeved on the outside of the fixed sleeve (2), and a multi-point expansion mobile positioning component is installed between the top of the lifting sleeve (601) and the outside of the fixed sleeve (2); The bottom outer side of the fixed sleeve (2) is rotatably fitted with a turntable (3). The four sides of the turntable (3) are equipped with telescopic scraping components for scraping the side walls of the deep foundation pit dewatering well of the subway. The top of the turntable (3) is fixedly connected to a rotary drive component that is in movable contact with the bottom of the fixed box (4). The bottom inner wall of the fixed box (4) is fixedly installed with a drive motor (502) whose output shaft is fixedly connected to the rotary drive component.

2. The dredging device for deep foundation pit dewatering wells in subways according to claim 1, characterized in that: The multi-point expansion and positioning assembly includes four vertical guide rods (701) fixedly connected in a ring at equal intervals to the top of the lifting sleeve (601) and surrounding the fixed sleeve (2). Two supports (7) are fixedly connected to each of the four sides of the fixed sleeve (2). The two supports (7) on the same side are slidably sleeved on the corresponding vertical guide rods (701). The side of the support (7) away from the fixed sleeve (2) is hinged with an inclined support rod (703). The two opposite support rods (703) are symmetrically arranged. A roller (704) is rotatably installed at the bottom end of the support rod (703). The outside of the roller (704) is adhesively sleeved with an anti-slip rubber sleeve (705). The side of the vertical guide rod (701) away from the fixed sleeve (2) is hinged with two inclined connecting rods (702). The two opposite connecting rods (702) are symmetrically arranged. The top of the connecting rod (702) is hinged to the side of the corresponding support rod (703) near the fixed sleeve (2).

3. The dredging device for deep foundation pit dewatering wells in subways according to claim 1, characterized in that: The telescopic scraping assembly includes a horizontal guide rod (301), one side of which is provided with a scale line. Rectangular guide grooves are provided on all four sides of the turntable (3). The rectangular guide grooves are slidably sleeved on the corresponding horizontal guide rod (301). The bottom of the horizontal guide rod (301) is in contact with a knob bolt (303). The turntable (3) is threaded onto the four knob bolts (303). A scraper (302) is fixedly connected to the end of the horizontal guide rod (301) away from the fixed sleeve (2).

4. The dredging device for deep foundation pit dewatering wells in subways according to claim 1, characterized in that: The rotary drive assembly includes an internal gear ring (5) fixedly connected to the top of the turntable (3). The inner left side of the internal gear ring (5) is meshed with a gear (501) fixedly connected to the bottom end of the output shaft of the drive motor (502). The top of the internal gear ring (5) is in movable contact with the bottom of the fixed box (4).

5. The dredging device for deep foundation pit dewatering wells in subways according to claim 1, characterized in that: A storage battery is fixedly installed on the inner left side of the fixed box (4), and the drive motor (502) and the electric push rod (6) are both electrically connected to the storage battery.

6. The dredging device for a deep foundation pit in a subway as described in claim 2, characterized in that: The top of the support (7) is provided with a vertical guide hole that slides and fits on the outer side of the corresponding vertical guide rod (701).

7. The dredging device for a deep foundation pit in a subway as described in claim 3, characterized in that: The bottom inner wall of the rectangular guide groove is provided with a threaded hole that is threaded to the corresponding knob bolt (303).

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