Elastic steel cylinder for plugging leakage section of karst cave

Abstract

The utility model relates to the technical field of bored piles, in particular to an elastic steel cylinder for plugging a karst cave leakage section, which comprises a steel cylinder roll and a nylon skirt hemline, a rolling clamp is arranged on the inner side of the steel cylinder roll, the rolling clamp comprises an upper clamping component, a control rod and a lower clamping component, and the upper clamping component and the lower clamping component are symmetrically arranged at the upper end and the lower end of the steel cylinder roll. The upper clamping assembly comprises a connecting disc and fixing claws, a plurality of sets of fixing claws are evenly arranged on the connecting disc, and the fixing claws are buckled with the edge of a steel cylinder reel pipe opening; the control rod comprises a telescopic rod and a connecting rod, the telescopic rod is arranged between the upper clamping assembly and the lower clamping assembly, a steel cable is connected to the top end of the connecting rod, and a control cable is arranged on the steel cable; according to the winding clamp, the upper clamping assembly and the lower clamping assembly are controlled to be opened and closed through the control rod, the steel cylinder coil is clamped and hooped, the structure is simple, work is reliable, an additional structure does not need to be welded and machined on the steel cylinder coil, use is more convenient, and the winding clamp can be repeatedly used.

Description

An elastic steel cylinder for sealing seepage sections in karst caves Technical Field

[0001] This utility model relates to the field of bored pile technology, and in particular to an elastic steel cylinder for sealing the seepage section of a karst cave. Background Technology

[0002] Sealing leaking sections in karst caves is a complex and crucial engineering task, involving multiple aspects, including geological exploration, analysis of the causes of leakage, selection of sealing materials, application of sealing methods, and subsequent monitoring and maintenance. For larger leaking sections in karst caves, elastic steel cylinders are generally used for sealing. Current technology typically employs control cables and struts. One end of the control cable is connected to the outer wall of the elastic steel cylinder, and the other end is looped around the top of the cylinder and attached to the strut. The length of the strut should be 1-2 cm larger than the diameter of the pre-compressed elastic steel cylinder. One end of the strut is welded to a bracket on the cylinder wall, and the other end is positioned at a slot on the top of the cylinder and secured with positioning reinforcing bars.

[0003] Once the flexible steel cylinder is lowered into position in the seepage section of the karst cave, a crane is used to lift the release cable on the support rod, controlling the support rod to rotate so that the control cable detaches from the support rod. At this point, the diameter of the flexible steel cylinder will freely increase, filling the seepage section of the karst cave.

[0004] Existing flexible steel cylinder installation structures are complex, have a limited range of applicable sizes, are inconvenient to operate, and affect construction efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an elastic steel cylinder for sealing leaking sections in karst caves.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An elastic steel cylinder for sealing seepage sections in karst caves includes a steel cylinder roll and a nylon skirt. The inner side of the steel cylinder roll is provided with a winding clamp. The winding clamp includes an upper clamping assembly, a control rod, and a lower clamping assembly. The upper clamping assembly and the lower clamping assembly are symmetrically arranged at the upper and lower ends of the steel cylinder roll. The upper clamping assembly includes a connecting plate and fixing claws. Multiple sets of fixing claws are evenly arranged on the connecting plate. The fixing claws are engaged with the edge of the opening of the steel cylinder roll.

[0008] The control rod includes a telescopic rod and a connecting rod. The telescopic rod is disposed between the upper clamping assembly and the lower clamping assembly. A steel cable is connected to the top of the connecting rod, and a control cable is provided on the steel cable.

[0009] Preferably, the fixing claw includes a connecting arm and a gripper, the connecting arm is hinged to the connecting disc, the connecting arm and the gripper are telescopically connected and locked by bolts.

[0010] Preferably, the connecting plate is provided with a spring limiting piece corresponding to the connecting arm, and the spring limiting piece is set in a direction corresponding to the clamping direction of the gripper.

[0011] Preferably, the lower end of the telescopic rod is fixedly connected to the lower clamp assembly, the telescopic rod and the connecting rod are rotatably connected by a rotating sleeve, and the connecting rod and the connecting disc are connected by a screw pair.

[0012] Preferably, the control cable is connected to the telescopic rod, and the telescopic rod is an electric telescopic rod.

[0013] Preferably, the nylon skirt is disposed on the lower side of the steel cylinder roll, and the distance between the nylon skirt and the lower edge of the steel cylinder roll is 5-10 cm.

[0014] The beneficial effects of this utility model are as follows:

[0015] Compared with the prior art, this utility model controls the opening and closing of the upper and lower clamping components through a control rod, clamping and holding the steel cylinder coil. The structure is simple and the operation is reliable. There is no need to weld or process additional structures on the steel cylinder coil, and the winding clamp can be reused. At the same time, the upper and lower clamping components are adjustable to adapt to steel cylinder coils of different sizes, making it more convenient to use. Attached Figure Description

[0016] Figure 1 is a three-dimensional structural schematic diagram of an elastic steel cylinder for sealing the seepage section of a karst cave proposed in this utility model;

[0017] Figure 2 is a three-dimensional cross-sectional view of an elastic steel cylinder for sealing the seepage section of a karst cave proposed in this utility model;

[0018] Figure 3 is a magnified view of the structure at point A in Figure 2.

[0019] In the diagram: 1. Steel cylinder coil; 2. Nylon skirt; 3. Upper clamping assembly; 31. Connecting disc; 32. Connecting arm; 33. Gripper; 34. Spring limit plate; 4. Control rod; 41. Telescopic rod; 42. Rotating sleeve; 43. Connecting rod; 5. Steel cable; 6. Lower clamping assembly. Detailed Implementation

[0020] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Referring to Figures 1-3, an elastic steel cylinder for sealing a seepage section of a karst cave includes a steel cylinder roll 1 and a nylon skirt 2. The steel cylinder roll 1 is made of elastic thin metal sheet rolled up, and the contact points of the rolled metal sheets are staggered. The nylon skirt 2 is set on the lower side of the steel cylinder roll 1. The distance between the nylon skirt 2 and the lower edge of the steel cylinder roll 1 is 5-10 cm, generally 8 cm. The lower opening of the steel cylinder roll 1 can be covered by the nylon skirt 2, which limits the sealing concrete within a certain range and acts as a skeleton for the concrete, completely sealing the gap between the elastic steel cylinder and the bottom of the karst cave.

[0022] The inner side of the steel cylinder coil 1 is equipped with a winding clamp. When installing the steel cylinder coil 1, it is pre-compressed and held in place by the winding clamp, facilitating its lowering into the bored pile to seal the seepage section of the karst cave. The winding clamp includes an upper clamping assembly 3, a control rod 4, and a lower clamping assembly 6. The upper clamping assembly 3 and the lower clamping assembly 6 are symmetrically arranged at the upper and lower ends of the steel cylinder coil 1, securing it from both ends. The upper clamping assembly 3 includes a connecting plate 31 and fixing claws. Multiple sets of fixing claws are evenly distributed on the connecting plate 31, preferably three sets, to stably hold the steel cylinder coil 1 in place. The fixing claws interlock with the edge of the pipe opening of the steel cylinder coil 1. The fixing claws include a connecting arm 32 and a clamping claw 33. The arm 32 is hinged to the connecting plate 31, and the connecting arm 32 is telescopically connected to the gripper 33 and locked by bolts. This facilitates the adjustment of the length of the fixing claw to adapt to steel cylinder rolls 1 of different diameters. It also facilitates fine-tuning of the length of the fixing claw to ensure stable and reliable clamping of the steel cylinder roll 1. The connecting plates 31 at both ends move toward the middle of the steel cylinder roll 1 to tighten the fixing claw and clamp the steel cylinder roll 1 from both ends. The connecting plate 31 is provided with a spring limiting plate 34 corresponding to the connecting arm 32. The spring limiting plate 34 is set in the clamping direction corresponding to the gripper 33 to limit the swing angle of the fixing claw and facilitate the gripper 33 to quickly disengage from the edge of the pipe opening of the steel cylinder roll 1.

[0023] The control rod 4 includes a telescopic rod 41 and a connecting rod 43. The telescopic rod 41 is located between the upper clamping assembly 3 and the lower clamping assembly 6. The length of the telescopic rod 41 is adjusted to cause the upper clamping assembly 3 and the lower clamping assembly 6 to clamp the steel cylinder coil 1 or to loosen the steel cylinder coil 1 for installation. During the extension of the telescopic rod 41, the connecting plate 31 of the upper clamping assembly 3 and the lower clamping assembly 6 moves to both ends respectively. The spring limiting plate 34 restricts the rotation of the connecting arm 32, thereby ensuring that the gripper 33 is disengaged from the steel cylinder coil 1. The lower end of the telescopic rod 41 is fixedly connected to the lower clamping assembly 6. The telescopic rod 41 and the connecting rod 43 are rotatably connected by a rotating sleeve 42. The connecting rod 43 and the connecting plate 31 are connected by a screw pair, which facilitates the adjustment of the relative position between the connecting rod 43 and the connecting plate 31 to adapt to steel cylinder coils 1 of different lengths.

[0024] A steel cable 5 is connected to the top of the connecting rod 43. A control cable is installed on the steel cable 5. The control cable is connected to the telescopic rod 41. The telescopic rod 41 is an electric telescopic rod. The control cable is connected to a control device or switch. The telescopic rod 41 is controlled to work through the control cable.

[0025] In this embodiment, when the drilled pile encounters a karst cave with leakage, an elastic steel cylinder is installed to seal it. The diameter of the steel cylinder roll 1 in its naturally relaxed state is larger than that of the drilled pile hole. The construction personnel compress and rewind the steel cylinder roll 1 in advance, install a winding clamp, and use the upper clamping component 3 and the lower clamping component 6 to fasten the upper and lower edges of the steel cylinder roll 1. The telescopic rod 41 retracts, tightening the upper clamping component 3 and the lower clamping component 6, thereby clamping the steel cylinder roll 1. The steel cylinder roll 1 is lifted by the steel cable 5 and lowered into the drilled pile hole. After reaching the designated position, the telescopic rod 41 extends, and the upper clamping component 3 and the lower clamping component 6 slowly open until the telescopic rod 41 falls due to gravity. The lower clamping component 6 first disengages from the lower edge of the steel cylinder roll 1, and the steel cylinder roll 1 unfolds and abuts against the side wall of the drilled pile hole. The steel cable 5 is lifted, and under the action of the spring limiting plate 34, the clamping claw 33 of the upper clamping component 3 also quickly disengages from the steel cylinder roll 1, completely releasing the steel cylinder roll 1 and spreading it to abut against the inner wall of the drilled pile.

[0026] When the telescopic rod 41 malfunctions and cannot extend or retract, the torque is transmitted to the connecting rod 43 by rotating the steel cable 5, thereby changing the relative position between the connecting rod 43 and the connecting plate 31, and loosening the upper clamping assembly 3 and the lower clamping assembly 6.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. An elastic steel cylinder for sealing seepage sections in karst caves, comprising a steel cylinder coil (1) and a nylon skirt (2), characterized in that, The inner side of the steel cylinder (1) is provided with a winding clamp. The winding clamp includes an upper clamping assembly (3), a control rod (4), and a lower clamping assembly (6). The upper clamping assembly (3) and the lower clamping assembly (6) are symmetrically arranged at the upper and lower ends of the steel cylinder (1). The upper clamping assembly (3) includes a connecting plate (31) and a fixing claw. Multiple sets of fixing claws are evenly arranged on the connecting plate (31). The fixing claws are engaged with the edge of the pipe opening of the steel cylinder (1). The control rod (4) includes a telescopic rod (41) and a connecting rod (43). The telescopic rod (41) is arranged between the upper clamping assembly (3) and the lower clamping assembly (6). A steel cable (5) is connected to the top of the connecting rod (43). A control cable is provided on the steel cable (5).

2. The elastic steel cylinder for sealing seepage sections in karst caves according to claim 1, characterized in that, The fixing claw includes a connecting arm (32) and a clamping claw (33). The connecting arm (32) is hinged to the connecting disc (31). The connecting arm (32) and the clamping claw (33) are telescopically connected and locked by bolts.

3. The elastic steel cylinder for sealing the seepage section of a karst cave according to claim 2, characterized in that, The connecting plate (31) is provided with a spring limiting piece (34) corresponding to the connecting arm (32), and the spring limiting piece (34) is set in a direction corresponding to the clamping direction of the gripper (33).

4. The elastic steel cylinder for sealing the seepage section of a karst cave according to claim 1, characterized in that, The lower end of the telescopic rod (41) is fixedly connected to the lower clamp assembly (6). The telescopic rod (41) and the connecting rod (43) are rotatably connected by a rotating sleeve (42). The connecting rod (43) and the connecting disc (31) are connected by a screw pair.

5. The elastic steel cylinder for sealing the seepage section of a karst cave according to claim 1, characterized in that, The control cable is connected to the telescopic rod (41), which is an electric telescopic rod.

6. The elastic steel cylinder for sealing the seepage section of a karst cave according to claim 1, characterized in that, The nylon skirt (2) is located on the lower side of the steel cylinder (1), and the distance between the nylon skirt (2) and the steel cylinder (1) is 5-10 cm from the lower edge of the steel cylinder (1).

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