Bracket for plugging air bag

Abstract

The utility model relates to the technical field of pipeline plugging, in particular to a support for plugging an air bag. Comprising a hoop and rolling wheels arranged on the hoop, at least three rolling wheels are arranged around the hoop at intervals, the rolling wheels are located on the outer side of the hoop and rotatably installed on a wheel frame, the hoop is sleeved with the wheel frame, and a locking mechanism is arranged between the wheel frame and the hoop. The hoops can improve the strength of the two ends of the air bag, moving difficulty caused by deformation of the air bag in the conveying process is avoided, gaps are formed between the rollers on the wheel carriers and the inner wall of the pipeline, pollution caused by contact between repairing materials wrapping the air bag and the pipeline when the repairing materials enter the pipeline is eliminated, and meanwhile friction force borne by an original direct air bag dragging mode is reduced through rolling of the rollers. The in-place speed of the repairing material is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline leakage blocking, in particular to a support for blocking airbags. Background Art

[0002] Rapid pipeline plugging usually involves delivering a plugging airbag to the damaged part of the pipeline. After the airbag is inflated, it can plug the damaged part, facilitating pipeline repair construction. For example, Chinese Patent 2023100976319 discloses "Pipeline plugging airbag adapted to different pipe diameters", and the publication number is CN116181995A. The pipeline plugging airbag includes a cage body; an airbag, which is sleeved on the outer periphery of the cage body; and a gas delivery device, which connects the airbag and controls the amount of gas in the airbag. The cage body includes a plurality of annular brackets and a plurality of axial brackets, each of which is an annular variable diameter structure, each annular bracket is arranged perpendicular to the first axis and arranged in sequence along the first axis direction, and each annular bracket is connected by an axial bracket arranged along the first axis. Each annular bracket is an annular variable diameter structure to adapt to pipelines of different diameters. In addition, Chinese patent 2023108948590 discloses "Drainable and Sealed Airbag for Pipeline Emergency Repair", with publication number CN116877822A, which includes a float valve drainage assembly, a first drainage water pipe, a second drainage water pipe and an airbag; the float valve drainage assembly is arranged in the inspection well, the drainage end of the float valve drainage assembly is connected to one end of the first drainage water pipe, and the other end of the first drainage water pipe extends to the pipeline of the inspection well away from the maintenance area and is connected to the second drainage water pipe; the inner ring of the airbag is formed with a mounting hole, so that the second drainage water pipe is sealed through the airbag, and the outer ring of the airbag can expand to seal and fit on the inner wall of the pipeline. This kind of drainable and sealed airbag can solve the problem of easy water leakage in the inspection well in the prior art, which leads to difficulty and danger in maintenance. In actual use, the outer wall of the plugging airbag in the above-mentioned prior art is easy to rub against the inner wall of the pipeline, which increases the difficulty of moving the plugging airbag to the construction site. On the other hand, when the outer wall of the plugging airbag carries plugging material, the plugging material is easily contaminated by the friction of the inner wall of the pipeline. Utility Model Content

[0003] The utility model aims to provide a blocking airbag support, which has small movement resistance of the blocking airbag during construction and the plugging material on the outer wall of the airbag will not pollute the inner wall of the pipeline.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a bracket for sealing an airbag, comprising a clamp and a roller arranged on the clamp, wherein at least three rollers are arranged at intervals around the clamp, and the rollers are located on the outside of the clamp. The rollers are rotatably mounted on a wheel frame, and the wheel frame is mounted on the clamp, and a locking mechanism is arranged between the wheel frame and the clamp.

[0006] Through this solution, the clamp can improve the strength of both ends of the airbag, prevent the airbag from deforming during transportation and causing difficulty in moving. The rollers on the wheel frame form a gap with the inner wall of the pipe, eliminating the contact and contamination of the repair material wrapped outside the airbag with the pipe when entering the pipe. At the same time, the rolling of the rollers reduces the friction of the original direct dragging of the airbag, thereby increasing the speed at which the repair material is put into place.

[0007] Preferably, the locking mechanism includes a locking hole radially arranged on the clamp, a locking pin adapted to the locking hole and slidably mounted on the wheel frame, the wheel frame includes a left side plate and a right side plate symmetrically arranged and a crossbeam fixedly connected between the left side plate and the right side plate, the crossbeam is located in the middle section of the wheel frame, the locking pin is inserted through the crossbeam, the lower end of the locking pin is correspondingly mounted in the locking hole on the clamp, the upper end of the locking pin is provided with a handle, and a spring is mounted on the locking pin; the roller is rotatably mounted between the upper end of the wheel frame, the left side plate and the right side plate through a wheel axle; clamp mounting holes are provided on the lower end of the wheel frame, the left side plate and the right side plate, and the clamp is inserted through the clamp mounting holes.

[0008] Through this solution, the position of the locking mechanism on the clamp can be conveniently adjusted.

[0009] Preferably, the lower end of the spring is fixedly connected to the locking pin, and the upper end of the spring abuts against the crossbeam.

[0010] With this solution, the lock pin can be easily lifted to release the lock, and the lock pin can be automatically inserted into the lock hole to lock after the lock is released.

[0011] Preferably, the upper end of the spring is fixedly connected to the handle, and the lower end of the spring is fixedly connected to the crossbeam.

[0012] With this solution, the lock pin can be easily lifted to release the lock, and the lock pin can be automatically inserted into the lock hole to lock after the lock is released.

[0013] Preferably, the clamp includes a steel strip and a lock buckle fixedly connected to one end of the steel strip, the other end of the steel strip away from the lock buckle has a plurality of eyelets arranged at equal distances, the lock buckle is a screw rotatably installed in a sleeve, one side of the sleeve is fixedly connected to the steel strip, and the pitch of the screw is adapted to the spacing distance of the eyelets.

[0014] Through this solution, the diameter of the clamp can be adjusted to tighten it on the airbag, and it can also be adapted to airbags of different specifications and sizes.

[0015] Preferably, the sleeve is a tubular structure with a semicircular cross-section, and both ends of the sleeve are provided with end plates supporting the screw rod, and both sides of the sleeve are provided with claw buckles connected to the side surfaces of the steel belt.

[0016] Through this solution, the sleeve can be conveniently fixedly connected to the steel belt.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the bracket for sealing the airbag adopts an adjustable steel belt clamp, which is suitable for airbags of various specifications and sizes. It has a simple structure and is easy to use. When used, it can improve the strength of both ends of the airbag to avoid deformation of the airbag during transportation and cause difficulty in movement. The rollers on the wheel frame form a gap with the inner wall of the pipeline, eliminating the contact contamination of the repair material wrapped outside the airbag with the pipeline when entering the pipeline. At the same time, the rolling of the rollers reduces the friction of the original direct dragging of the airbag, thereby increasing the speed at which the repair material is put into place. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of the structure of the locking mechanism;

[0020] Figure 3 It is a schematic diagram of the structure of the lock buckle and the steel belt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1 As shown, the utility model discloses a support for blocking airbags, including a clamp 1, a roller 2 arranged on the clamp 1, at least three rollers 2 are arranged at intervals around the clamp 1, and the rollers 2 are located on the outside of the clamp 1. In this embodiment, three rollers 2 are arranged at an angle of 120 degrees to each other. Of course, according to the different sizes of the airbags, four or five or more rollers 2 can also be arranged on the same clamp 1. When in use, a set of such supports is installed at each end of the cylindrical blocking airbag. When repairing, the airbag with the support is placed in the pipeline, and the airbag and the repair material are transported to the position to be repaired by retracting and releasing the positioning ropes at both ends of the airbag, and the airbag is inflated. After the airbag is inflated, the repair material is pushed to the inner wall of the pipeline. After the repair material is solidified, the airbag is deflated and dragged out of the pipeline to complete the pipeline repair construction. When dragging the airbag, a gap is formed between the rollers on the wheel frame and the inner wall of the pipe, eliminating the contact and contamination between the repair material wrapped outside the airbag and the pipe when entering the pipe. At the same time, the rolling of the rollers reduces the friction of the original direct dragging of the airbag and increases the speed at which the repair material is put into place.

[0023] like Figure 2As shown, the roller 2 is rotatably mounted on the wheel frame 3 through the wheel axle, and the wheel frame 3 is sleeved on the clamp 1. A locking mechanism is arranged between the wheel frame 3 and the clamp 1, which is used to lock the wheel frame 3 at a certain position of the clamp 1. The locking mechanism includes a locking hole radially arranged on the clamp 1, a locking pin 4 adapted to the locking hole and slidably mounted on the wheel frame 3, the locking pin 4 is a cylindrical rod-shaped structure, and the locking pin 4 can be axially moved to be inserted into or removed from the locking hole. The wheel frame 3 includes a left side plate 31 and a right side plate 32 symmetrically arranged and a crossbeam 33 fixedly connected between the left side plate 31 and the right side plate 32, the crossbeam 33 is located in the middle section of the wheel frame 3, the locking pin 4 is inserted through the crossbeam 33, the lower end of the locking pin 4 is correspondingly mounted in the locking hole on the clamp 1, the upper end of the locking pin 4 is provided with a handle 41, and a spring 5 is sleeved on the locking pin 4. The locking pin 4 is a cylindrical rod-shaped structure, which can be axially moved on the crossbeam 33 so that its lower end can be inserted into or removed from the locking hole on the clamp 1. When the lower end of the locking pin 4 is inserted into the locking hole, the wheel frame 3 is locked on the clamp 1. Conversely, when the lower end of the locking pin 4 is removed from the locking hole, the wheel frame 3 is unlocked and can slide along the clamp 1. The roller 2 is rotatably mounted on the upper end of the wheel frame 3, between the left plate 31 and the right plate 32 through the wheel axle. Relative to the clamp 1, the roller 2 is located at the outermost side of the clamp 1. During the plugging construction, the roller 2 abuts against the inner wall of the pipe to be repaired, separating the airbag from the inner wall of the pipe, avoiding the airbag from directly rubbing against the inner wall of the pipe, reducing the resistance of the airbag movement, and avoiding the plugging material on the outer wall of the airbag from contaminating the inner wall of the pipe.

[0024] A clamp mounting hole 34 is provided on the lower end of the wheel frame 3 , the left plate 31 and the right plate 32 , and the clamp 1 is inserted through the clamp mounting hole 34 .

[0025] In addition, as another embodiment of the utility model, the wheel frame 3 can also adopt a circular tubular structure, and the roller 2 is rotatably mounted on the upper end of the wheel frame 3 of the circular tubular structure through a wheel axle, and the two ends of the wheel axle are respectively mounted on both sides of the circular tubular structure; the crossbeam 33 is a partition arranged in the middle inner cavity of the circular tubular structure; the clamp mounting holes 34 are symmetrically arranged on both sides of the lower end of the circular tubular structure, and the clamp 1 is inserted through the clamp mounting hole 34.

[0026] The spring 5 serves to push the lock pin 4 back to its original position. Figure 2 As shown, the lower end of the spring 5 is fixedly connected to the lock pin 4, and the upper end is against the cross beam 33. The lower end of the spring 5 can be connected to the side wall of the lock pin 4 by welding, perforation or spring seat. When the handle 41 is lifted, the lock pin 4 moves upward against the elastic force of the spring 5, the spring 5 is compressed, the lower end of the lock pin 4 moves out of the lock hole, and the wheel frame 3 is unlocked; when the handle 41 is released, the spring 5 pushes the lock pin 4 to move downward and insert into the lock hole, locking the wheel frame 3.

[0027] In addition, the spring 5 can also be installed in another way. The upper end of the spring 5 is fixedly connected to the handle 41, and the lower end is fixedly connected to the crossbeam 33. At this time, the spring 5 plays the role of a tension spring. When the handle 41 is lifted, the spring 5 is stretched, the lock pin 4 overcomes the elastic force of the spring 5 and moves upward, the lower end of the lock pin 4 moves out of the lock hole, and the wheel frame 3 is unlocked; when the handle 41 is released, the spring 5 contracts and pushes the lock pin 4 to move downward and insert into the lock hole, locking the wheel frame 3.

[0028] like Figure 3 As shown, the clamp 1 includes a steel strip 11 and a lock fixedly connected to one end of the steel strip 11. The cross section of the steel strip 11 is rectangular, has good elasticity, and can be bent into a circular ring shape. The other end of the steel strip 11 away from the lock has a plurality of eyelets 12 arranged at equal distances. The lock is a screw 14 rotatably installed in a sleeve 13. One side of the sleeve 13 is fixedly connected to the steel strip 11. The pitch of the screw 14 is adapted to the spacing distance of the eyelets 12, so that the spiral on the screw 14 can just fit into the eyelet 12. When the screw 14 rotates, it can drive the eyelet 12 to move, thereby tightening or loosening the circular clamp 1. The sleeve 13 is a tubular structure with a semicircular cross section. The two ends of the sleeve 13 are provided with end plates 15 supporting the screw 14, and the two sides of the sleeve 13 are provided with claw buckles 16 connected to the side of the steel strip 11. The claw buckle 16 and the steel strip 11 can be connected by welding, riveting or buckle connection. After the sleeve 13 is installed on the outer side of the steel belt 11, there is a gap between the end plate 15 and the outer side of the steel belt 11 that matches the cross-sectional shape of the steel belt, so that the tail end of the steel belt with the eyelet 12 can be inserted into the gap. At this time, the spiral on the screw 14 is very close to the outer side of the steel belt 11. When the tail end of the steel belt is installed in the lock buckle, the spiral on the screw 14 is just stuck in the eyelet 12 at the tail end of the steel belt. By twisting the hand wheel at the end of the screw 14, the screw 14 rotates to drive the tail end of the steel belt to move, thereby tightening or loosening the clamp 1.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support for blocking an airbag, comprising a clamp (1) and a roller (2) arranged on the clamp (1), characterized in that: At least three rollers (2) are arranged at intervals around the clamp (1), the rollers (2) are located outside the clamp (1), the rollers (2) are rotatably mounted on a wheel frame (3), the wheel frame (3) is sleeved on the clamp (1), and a locking mechanism is arranged between the wheel frame (3) and the clamp (1); the locking mechanism comprises a locking hole radially arranged on the clamp (1), a locking pin (4) adapted to the locking hole and slidably mounted on the wheel frame (3), the wheel frame (3) comprises a left side plate (31) and a right side plate (32) symmetrically arranged, and a crossbeam (33) fixedly connected between the left side plate (31) and the right side plate (32), The crossbeam (33) is located in the middle section of the wheel frame (3); the lock pin (4) is inserted through the crossbeam (33); the lower end of the lock pin (4) is correspondingly mounted in the lock hole on the clamp (1); the upper end of the lock pin (4) is provided with a handle (41); and a spring (5) is sleeved on the lock pin (4); the roller (2) is rotatably mounted on the upper end of the wheel frame (3), between the left side plate (31) and the right side plate (32) via a wheel axle; and a clamp mounting hole (34) is provided on the lower end of the wheel frame (3), the left side plate (31) and the right side plate (32); the clamp (1) is inserted through the clamp mounting hole (34).

2. The stent for blocking an airbag according to claim 1, characterized in that: The lower end of the spring (5) is fixedly connected to the lock pin (4), and the upper end abuts against the crossbeam (33).

3. The stent for blocking an airbag according to claim 1, characterized in that: The upper end of the spring (5) is fixedly connected to the handle (41), and the lower end is fixedly connected to the crossbeam (33).

4. A stent for blocking an airbag according to claim 1, 2 or 3, characterized in that: The clamp (1) comprises a steel strip (11), a lock buckle fixedly connected to one end of the steel strip (11), the other end of the steel strip (11) away from the lock buckle has a plurality of eyelets (12) arranged at equal distances, the lock buckle is a screw rod (14) rotatably mounted in a sleeve (13), one side of the sleeve (13) is fixedly connected to the steel strip (11), and the pitch of the screw rod (14) is adapted to the spacing distance of the eyelets (12).

5. The stent for blocking an airbag according to claim 4, characterized in that: The sleeve (13) is a tubular structure with a semicircular cross-section. Both ends of the sleeve (13) are provided with end plates (15) for supporting the screw rod (14). Both sides of the sleeve (13) are provided with claw buckles (16) connected to the side surfaces of the steel belt (11).

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