Rapid tube descending device for tube well dewatering well

Abstract

The utility model discloses a rapid tube descending device for a tube well and a dewatering well, which relates to the technical field of building construction and comprises a well tube, a concrete arc-shaped base, deceleration steel cylinders, a steel wire rope limiting column, a steel wire rope and a locking device. The steel wire rope is wound on the deceleration steel cylinder and is ranked and limited by the steel wire rope limiting column, and the concrete arc-shaped base is clamped in the middle of the steel wire rope through a groove and used for supporting a well casing and achieving section-by-section lowering; the locking device is composed of a fixing frame, a movable treading frame, a spring, a pay-off roller, a gear and a locking tooth block, meshing of the locking tooth block and the gear is controlled through stretching and retracting of the spring, rapid pay-off and locking of the steel wire rope are achieved, and the well casing is prevented from falling out of control. The device is simple in structure, convenient to manufacture and install, low in cost, easy and convenient to operate, capable of remarkably improving the pipe descending efficiency, reducing the labor intensity and improving the construction safety and well completion quality, and suitable for various building construction scenes.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to a rapid pipe-laying device for dewatering wells. Background Technology

[0002] Deep wells, tubular wells, and dewatering wells are common facilities in construction. During construction, a borehole is pre-drilled, and then the well casing is lowered. The entire well is constructed from sections of casing joined together. One function of the casing is to support the well wall and prevent collapse or other damage. Due to limited drilling space, the lowering process is inconvenient. In current technology, conventional dewatering well casing lowering involves the use of cranes and other equipment, which is costly and slow. For some less demanding wells, the casing sections are often manually pushed into the borehole, a method that cannot guarantee the quality of the finished well. In slightly more demanding scenarios, a steel cable is first connected to a support frame, which is placed at the wellhead. The support frame then supports the casing. After the casing is aligned outside the borehole, the support frame is lowered, allowing the casing to enter the well. This process is repeated, lowering the casing a certain height each time a section is installed at the top, until the entire casing is installed. However, due to the complex environment at the construction site, workers may lose focus or make operational errors, causing the well casing to fall uncontrollably, damaging the well casing or even causing safety accidents. The uncertainty of manual operation and the lack of standardized casing-downloading equipment result in inconsistent well completion quality, making it difficult to meet the requirements of high-quality construction. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a rapid casing installation device for dewatering wells, which can improve the casing installation efficiency of dewatering wells, reduce construction costs, enhance the safety and stability of the casing installation process, reduce the risks of manual operation, improve the quality of well completion, and adapt to the needs of different construction scenarios.

[0004] The solution adopted by this utility model to solve its technical problem is: a rapid pipe-laying device for dewatering wells, including a well pipe, a concrete arc-shaped base, a deceleration steel cylinder, a wire rope limiting post and a wire rope, and a locking device. The deceleration steel cylinder is arranged parallel to both sides of the well hole, and long steel bars are inserted into both ends of the deceleration steel cylinder. The deceleration steel cylinder is connected by the long steel bars to form a rectangular support structure around the well hole. The two ends of the wire rope are symmetrically wrapped around the two deceleration steel cylinders and then tightened by workers. A 2cm groove is reserved on the bottom arc surface of the concrete arc-shaped base. The concrete arc-shaped base is set in the middle of the wire rope through the groove. Multiple well pipes are arranged in sequence on the concrete arc-shaped base and pulled down into the well hole by the wire rope to form a complete well.

[0005] The locking device includes a U-shaped fixed frame, on which a wire feeding roller is rotatably mounted. The two ends of the wire rope are symmetrically wound around the wire feeding roller, and gears are fixedly mounted at both ends of the wire feeding roller. A U-shaped movable footrest is longitudinally slidably mounted inside the fixed frame, and the movable footrest is installed inside the fixed frame by a spring. Locking teeth that are adapted to the tooth grooves of the gears are provided at both ends of the movable footrest.

[0006] Furthermore, multiple wire rope limiting posts are welded along the cylinder direction on the deceleration steel cylinder, and the wire ropes are wound sequentially through the gaps between adjacent wire rope limiting posts.

[0007] Furthermore, anchor bolts are welded to the bottom of the fixing frame, and the fixing frame is fixed to the side of the well hole by means of the anchor bolts.

[0008] Furthermore, the movable stepping frame is provided with sliders at both ends, and a groove matching the sliders is longitudinally opened on the inner side of the vertical surface of the fixed frame. The movable stepping frame is slidably fitted into the groove by the sliders.

[0009] Furthermore, two support plates are placed on both sides of the wellbore in a direction perpendicular to the deceleration steel cylinder. The two ends of the deceleration steel cylinder are supported on the support plates, and the deceleration steel cylinder is raised by the support plates.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention utilizes a deceleration cylinder and wire rope limiting post design to achieve orderly winding and rapid release of the wire rope. Furthermore, the friction between the deceleration cylinder and the wire rope reduces worker fatigue and significantly improves the speed and efficiency of well casing descent, saving considerable time compared to traditional methods. The main materials of the device, such as the deceleration cylinder, wire rope limiting post, and support plate, are reusable building materials, reducing material waste and demonstrating good economic and environmental benefits. The locking device effectively solves the problem of workers potentially losing their grip when pausing casing descent. Through the cooperation of a spring and locking teeth, the worker can only release the casing when stepping on the movable footrest; it automatically locks upon release, preventing the risk of the casing falling uncontrollably. This device can be flexibly adjusted according to actual site conditions and is suitable for wellbore construction of different diameters and depths, working efficiently in scenarios ranging from large construction sites to small home renovations. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 4 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0017] Figure 6 This is a schematic diagram of the locking device structure of this utility model.

[0018] In the diagram: 1. Well casing; 2. Concrete arc-shaped base; 3. Groove; 4. Deceleration steel cylinder; 5. Wire rope limiting post; 6. Wire rope; 7. Long steel bar; 8. Support plate; 9. Fixing frame; 10. Movable stepping frame; 11. Spring; 12. Slide groove; 13. Sliding block; 14. Wire feeding roller; 15. Gear; 16. Anchor bolt; 17. Locking tooth block. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1-6 This utility model provides a technical solution for a rapid casing installation device for dewatering wells: Example

[0021] according to Figure 2 and Figure 3 As shown, a rapid casing lowering device for a dewatering well mainly includes a well casing 1, a concrete arc-shaped base 2, a deceleration steel cylinder 4, a wire rope limiting post 5, and a wire rope 6. The concrete arc-shaped base 2 is prefabricated, with a 2cm groove 3 reserved on its bottom arc surface to accommodate the wire rope 6. The deceleration steel cylinder 4 is arranged parallel to both sides of the well hole, with two through holes at both ends of the deceleration steel cylinder 4. Long steel bars 7 are inserted into the two through holes respectively. The deceleration steel cylinders 4 on both sides are connected by the long steel bars 7 to form a rectangular support structure around the well hole. The two ends of a wire rope 6 are symmetrically wound around the two deceleration steel cylinders 4 and then... The workers tighten the tension, and multiple wire rope limiting posts 5 are welded horizontally along the cylinder direction on the deceleration steel cylinder 4. The wire rope 6 is wound sequentially through the gap between adjacent wire rope limiting posts 5. The wire rope limiting posts 5 are used to sort and limit the wire rope 6 wound on the deceleration steel cylinder 4, so that the wire rope 6 is wound in an orderly manner on the deceleration steel cylinder 4. Two support plates 8 are placed on both sides of the well hole in a direction perpendicular to the deceleration steel cylinder 4. The support plates 8 are parallel to the long steel bars 7, and the two ends of the deceleration steel cylinder 4 are lapped and supported on the support plates 8. The support plates 8 support and elevate the deceleration steel cylinder 4, so that the wire rope 6 wound on the deceleration steel cylinder 4 can be moved and released on the deceleration steel cylinder 4.

[0022] After the dewatering wells at the construction site are drilled, in order to meet the need for rapid installation of the pipe wells, a deceleration steel cylinder 4 is made according to the actual site conditions, and a wire rope limiting post 5 is welded onto the deceleration steel cylinder 4. Then, a wire rope 6 is wound around it. During the pipe laying process, in conjunction with the prefabricated concrete arc base 2, the friction between the wire rope 6 and the deceleration steel cylinder 4 is used to manually operate the wire rope 6 to hold the concrete arc base 2, thereby achieving the effect of rapid pipe laying.

[0023] During the manufacturing process, the deceleration steel cylinder 4 is made of two iron pipes with a diameter of 20cm, a wall thickness of 5mm, and a length of 2 meters. A row of steel bars with a spacing of 10cm is welded to each of the two iron pipes to form steel wire rope limiting posts 5. The steel bars are 10cm long and 16mm in diameter. After the manufacturing is completed, a circular hole with a diameter of 5cm is drilled at both ends of the two iron pipes. Then, two long steel bars 7 with a diameter of 25mm and a length of 2m are inserted into the holes to fix the spacing of the deceleration steel cylinder 4.

[0024] Compared with conventional dewatering construction, this device reduces the use of mechanical equipment and saves manpower. It is simple to manufacture and install, easy to use, and the materials can be reused. The pipe laying device can be directly manufactured and installed on the construction site according to the site requirements and can be used directly, which greatly improves the convenience of pipe laying and installation in the manhole. It can be widely used in construction sites, municipal subways, bridges and other construction sites that require dewatering.

[0025] In practical use, when lowering the well casing 1, the wire rope 6 is first wound around the deceleration cylinder 4. During the winding process, the wire rope 6 passes sequentially through the wire rope limiting post 5, and is wound in an orderly manner through the wire rope limiting post 5. Then, the middle part of the wire rope 6 is clamped onto the concrete arc-shaped base 2 through the groove 3. The worker tightens the end of the wire rope 6. During the pipe lowering process, the concrete arc-shaped base 2 is first lowered into the well hole through the wire rope 6. Then, according to the dewatering pipe sections, each section is 0.9m long, and is lowered manually... The well casing 1 is lowered into the pre-drilled well section by section at a manually controlled speed, so that the well casing 1 is stacked together to form a complete well casing. When lowering the well casing 1, the worker manually operates the wire rope 6 to support the concrete arc base 2 and the well casing 1, controlling the well casing 1 to move downward little by little. When the worker controls the well casing 1 to move downward by operating the wire rope 6, the friction between the wire rope 6 and the deceleration steel cylinder 4 can effectively reduce the force of the worker pulling the wire rope 6, which can reduce the labor intensity of the worker while lowering the well casing 1. Example

[0026] Based on Embodiment 1, the similarities between this embodiment and Embodiment 1 will not be repeated. The differences are as follows: During the pipe lowering process, the lowering will be frequently paused. During these pauses, manual restraint of the lowered pipe is required, necessitating constant pulling of the steel wire rope 6 by the worker. Due to the complexity of the construction site or worker inattention, workers may lose their grip during construction, resulting in damage to the well pipe. To address this issue, this embodiment adds a locking device to Embodiment 1.

[0027] The locking device includes a fixed frame 9 and a movable footrest 10, both of which are U-shaped structures. Anchor rods 16 are welded to the bottom of the fixed frame 9, which is then fixed to the side of the wellbore via the anchor rods 16. The installation position of the fixed frame 9 does not affect the lowering of the pipe. A wire rope 14 is rotatably mounted on the fixed frame 9. The two ends of the wire rope 6 are symmetrically wound around the wire rope 14. The wire rope 14 controls the release of the wire rope 6 when it rotates. Two gears 15 are fixedly mounted at both ends of the wire rope 14, restricting the wire rope 6 within the middle of the wire rope 14. The movable footrest 10 is longitudinally slidably mounted inside the fixed frame 9. Slider blocks 13 are provided at both ends of the movable footrest 10. A groove 12 matching the slider 13 is longitudinally formed on the inner side of the vertical surface of the fixed frame 9. The movable footrest 10 is slidably mounted on the groove 13 via the slider 13. In groove 12, locking blocks 17 that are adapted to the tooth grooves of gear 15 are provided at both ends of the movable footrest 10. The locking blocks 17 are located directly below gear 15, and the movable footrest 10 is installed in the fixed frame 9 by springs 11. The upper and lower ends of springs 11 are fixed to the opposite surfaces of the fixed frame 9 and the movable footrest 10, respectively. There are multiple springs 11, which are arranged between the fixed frame 9 and the movable footrest 10. When the springs 11 are in the normal extended state, the locking blocks 17 are locked in a tooth groove of gear 15. The movable footrest 10 and the locking blocks 17 limit and lock gear 15. At this time, the wire feeding roller 14 cannot rotate, and the wire rope 6 cannot be released. When the springs 11 are compressed, the locking blocks 17 disengage from the groove of gear 15. At this time, the wire feeding roller 14 is in a free state, and the worker can operate the wire rope 6 to release the rope.

[0028] In practical use, when the device is lowering the well pipe 1 into the well hole, when it is necessary to lower the pipe, the worker steps on the movable foot pedal 10 to move it downwards, compressing the spring 11. At this time, the locking tooth block 17 disengages from the tooth groove of the gear 15, and the wire release roller 14 is in a free state. Then, the worker pulls the wire rope 6 to release the rope, and controls the well pipe 1 to descend into the hole through the wire rope 6. When it is necessary to pause the lowering of the pipe, the worker releases the foot pedal 10, and the elastic force of the spring 11 pushes the movable foot pedal 10 to move upwards and reset, so that the locking tooth block 17 is locked in the corresponding tooth groove of the gear 15. The locking tooth block 17 provides a locking effect on the wire release roller 14. At this time, the wire rope 6 is locked and cannot continue to release the rope. The wire rope 6 will not pull the well pipe 1 that has been placed in the hole to move downwards. By using a locking device, workers can only release the pipe when they are stepping on the movable footrest 10. Once the movable footrest 10 is released, the pipe cannot be released, which can effectively ensure the safety of the pipe release and solve the problem of the wire rope 6 slipping out of the worker's hand when the pipe release is paused.

[0029] The above description is only a preferred embodiment of the present utility model and does not limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapid casing installation device for a dewatering well, comprising a well casing (1), a concrete arc-shaped base (2), a deceleration steel cylinder (4), a wire rope limiting post (5), and a wire rope (6), characterized in that: It also includes a locking device. The deceleration steel cylinder (4) is arranged parallel to both sides of the well hole. Long steel bars (7) are inserted at both ends of the deceleration steel cylinder (4). The deceleration steel cylinder (4) is connected by the long steel bars (7) to form a rectangular support structure around the well hole. The two ends of the steel wire rope (6) are symmetrically wrapped around the two deceleration steel cylinders (4) and then tightened by the workers. A 2cm groove (3) is reserved on the bottom arc surface of the concrete arc base (2). The concrete arc base (2) is set in the middle of the steel wire rope (6) through the groove (3). Multiple well pipes (1) are arranged in sequence on the concrete arc base (2) and pulled down into the well hole by the steel wire rope (6) to form a complete pipe well. The locking device includes a U-shaped fixed frame (9), on which a wire feeding roller (14) is rotatably mounted. The two ends of the wire rope (6) are symmetrically wound on the wire feeding roller (14), and gears (15) are fixedly mounted on both ends of the wire feeding roller (14). A U-shaped movable step frame (10) is longitudinally slidably mounted inside the fixed frame (9), and the movable step frame (10) is installed inside the fixed frame (9) by a spring (11). The two ends of the movable step frame (10) are provided with locking teeth (17) that are adapted to the tooth grooves of the gears (15).

2. The rapid casing installation device for a dewatering well according to claim 1, characterized in that: Multiple wire rope limiting posts (5) are welded along the cylinder direction on the deceleration steel cylinder (4), and the wire rope (6) is wound through the gap between adjacent wire rope limiting posts (5) in sequence.

3. The rapid casing installation device for a dewatering well according to claim 1, characterized in that: Anchor rods (16) are welded to the bottom of the fixing frame (9), and the fixing frame (9) is fixed to the side of the well hole by means of the anchor rods (16).

4. The rapid casing installation device for a dewatering well according to claim 1, characterized in that: The movable step frame (10) is provided with sliders (13) at both ends. A groove (12) matching the slider (13) is longitudinally opened on the inner side of the vertical surface of the fixed frame (9). The movable step frame (10) is slidably fitted into the groove (12) through the slider (13).

5. The rapid casing installation device for a dewatering well according to claim 1, characterized in that: Two support plates (8) are placed on both sides of the well hole in a direction perpendicular to the deceleration steel cylinder (4). The two ends of the deceleration steel cylinder (4) are supported on the support plates (8) to raise the deceleration steel cylinder (4).

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