Pipeline plugging device

Abstract

The utility model relates to the technical field of protection, and discloses a pipeline plugging device which comprises an expansion assembly, a guide rail, an annular sliding block connected with the surface of the guide rail in a sliding mode and an ejector block connected with the sliding block in a sliding mode. The power transmission assembly is connected with the expansion assembly through a clamping groove and comprises a sleeve, a sealing cover connected with the sleeve in a tooth meshing mode and a locking piece fixedly connected with the sealing cover, and the whole assembly is cylindrical; the external assembly wraps the expansion assembly and the power transmission assembly and comprises a deformation cylinder and a locking cover fixedly connected with the end of the deformation cylinder. External force is applied to the power transmission assembly to promote the expansion assembly to expand inwards and outwards so as to extrude the external assembly to be tightly attached to the cable, meanwhile, through mutual cooperation of the locking cover and the locking piece, the effect of being not prone to loosening is achieved, installation is convenient, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of protection, in particular to a pipeline plugging device. Background Art

[0002] With the rapid development of urban construction, the construction of urban underground pipelines has also advanced rapidly. Urban underground pipelines are responsible for functions such as urban power transmission, information transmission, energy transportation, flood control and disaster reduction, and waste disposal. They are the material basis for the survival and development of cities. While various urban infrastructure is being improved, the requirements for the management and maintenance of underground pipelines are also getting higher and higher. In the past, for the protection of underground power and communication pipelines, plastic pipes, fiberglass pipes, cement pipes, etc. were generally used. The protective pipes were laid in pre-dug underground trenches, and manholes were reserved according to standards as working points for laying cables, inspection, maintenance, and emergency repair. The manholes are connected to the pre-buried underground pipelines to form the entire underground pipeline network. Therefore, if the waterproof and sealing treatment of the pipelines is not proper, the accumulated water, silt, and animals such as mice in the manholes are likely to enter the pipelines, causing great harm to the cables in the underground pipelines and even leading to the interruption of power and communication. Therefore, it is particularly important to waterproof, prevent mud, and prevent mice at the pipe orifices of cable pipelines. The existing cable pipeline plugging devices are generally made of a double-layer rubber structure. After the rubber is squeezed, it expands inward and outward, generating an annular sealing surface between the cross-section of the pipeline and the cable for sealing. Due to the defect that the annular sealing surface does not fit tightly with the outer wall of the pipeline or does not fill the cross-section between the pipeline and the cable, the cable cannot be fixed and the pipeline cannot be sealed, resulting in poor plugging effect and poor sealing performance of the pipeline plugging device. It is easy to loosen after long-term use, and at the same time, the installation steps are complicated.

[0003] Therefore, in order to solve the problems of poor plugging effect, poor sealing performance, and complicated installation of the pipeline plugging device, we propose a pipeline plugging device with good sealing performance, convenient installation, simple operation, and not easy to loosen. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. In this part, as well as in the abstract and the title of the specification of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this part, the abstract, and the title of the utility model. However, such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problems existing in the above-mentioned prior art, namely, the existing pipeline plugging device has poor plugging effect, poor sealing performance, is easy to loosen after long-term use, and has complicated installation steps, the present utility model is proposed.

[0006] Therefore, the technical problem to be solved by the present utility model is to design a pipeline plugging device, which is interconnected by relevant mechanical mechanisms to achieve a tight plugging of the cable pipeline, and has the effects of convenient installation and not easy to loosen.

[0007] To solve the above technical problem, the present utility model provides the following technical solution: A pipeline plugging device, including an expansion component, which includes a guide rail, an annular slider slidably connected to the surface of the guide rail, and a top block slidably connected to the slider; and

[0008] a power transmission component, the power transmission component is connected to the expansion component by a card slot, and includes a sleeve, a cover meshed with the sleeve by teeth, and a locking member fixedly connected to the cover, and the whole component is cylindrical;

[0009] an external component, the external component covers the outside of the expansion component and the power transmission component, and includes a deformation cylinder and a locking cover fixedly connected to the end of the deformation cylinder.

[0010] As a preferred solution of the pipeline plugging device of the present utility model, wherein: the guide rail includes an outer guide rail and an inner guide rail fixedly connected to the outer guide rail, the inner guide rail has the same shape as the outer guide rail and is vertically mirror-inverted;

[0011] A plurality of first sliding grooves are circumferentially arranged along the vertical outer wall of the outer guide rail, a plurality of first guiding grooves are circumferentially arranged along the horizontal plate of the outer guide rail, and a first annular convex block is arranged on the inner wall of the upper part of the outer guide rail; a plurality of second sliding grooves are circumferentially arranged along the vertical outer wall of the inner guide rail, a plurality of second guiding grooves are circumferentially arranged along the horizontal plate of the inner guide rail, and a second annular convex block is arranged on the inner wall of the upper part of the inner guide rail.

[0012] As a preferred solution of the pipeline plugging device of the present utility model, wherein: the top block includes an outer top block slidably matched with the outer guide rail and an inner top block slidably matched with the inner guide rail; a first sliding block and a first guiding block are arranged on the surface of the outer top block, and the outer top block is in a shape of a capital "J"; a second sliding block and a second guiding block are arranged on the surface of the inner top block, and the inner top block is in an "L" shape.

[0013] As a preferred solution of the pipeline plugging device of the present utility model, wherein: the slider is in a shape of an annular cylinder, and a plurality of first grooves are circumferentially arranged on it, and the first grooves are slidably connected to the outer top block and the inner top block; an annular groove is arranged on the circumference of the slider, and the annular groove is slidably connected to the first annular convex block and the second annular convex block.

[0014] As a preferred embodiment of the pipe plug of the present utility model, the following is provided: A plurality of strip-shaped first limiting grooves are circumferentially arranged on the outer wall of the sleeve, and the first limiting grooves are connected to the first sliding block and the second sliding block in a clamping manner; A plurality of first clamping grooves are circumferentially arranged on the outer wall of the sleeve.

[0015] As a preferred embodiment of the pipe plug of the present utility model, the following is provided: The cover includes an annular cover seat, a seat post fixedly connected to the surface of the cover seat, and a first clamping block fixedly connected to the surface of the cover seat and located inside the external component. The first clamping block is engaged with the first clamping groove in a toothed manner.

[0016] The locking member is fixedly connected to the cover. The locking member has a ring-shaped three-layer structure, including a locking disk fixedly connected to the cover, a plurality of first elastic members fixedly connected to the circumferential array on the upper surface of the locking disk, and a sliding disk fixedly connected to the other end of the first elastic member; A plurality of groups of forward teeth are circumferentially arranged on the bottom surface of the locking disk.

[0017] As a preferred embodiment of the pipe plug of the present utility model, the following is provided: The overall structure of the external component is concave. The deformation cylinder is made of deformable rubber material and is provided with a first cavity inside. The expansion component is located inside the first cavity, and the power transmission component is slidably connected to the inner wall of the first cavity.

[0018] As a preferred embodiment of the pipe plug of the present utility model, the following is provided: The locking cover is provided with an annular locking groove, an annular connection groove, and an annular sliding groove communicating with the annular connection groove; A plurality of groups of reverse teeth are circumferentially arranged on the bottom surface of the annular locking groove. The reverse teeth are engaged with the forward teeth in a toothed manner, and the annular sliding groove is slidably connected to the sliding disk.

[0019] As a preferred embodiment of the pipe plug of the present utility model, the following is provided: A plurality of groups of arc-shaped grooves are arranged on the inner wall of the guide rail. A plurality of groups of arc-shaped blocks are arranged on the surface of the deformation cylinder in contact with the guide rail. The arc-shaped blocks can be nested and matched with the arc-shaped grooves.

[0020] As a preferred embodiment of the pipe plug of the present utility model, the following is provided: Third annular grooves are provided at positions near the ends of both ends of the guide rail, and second elastic members are fixedly connected in the third annular grooves.

[0021] The beneficial effects of the present utility model: By applying an external force to the power transmission component, the expansion component is forced to expand inwards and outwards, so as to squeeze the external component to closely fit the cable. At the same time, through the mutual cooperation of the locking cover and the locking member, the effect of not being easily loosened is achieved, and the installation is convenient and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0023] Figure 1 Overall schematic diagram of a pipe plugging device according to an embodiment provided by the present utility model;

[0024] Figure 2 Cross-sectional view of a pipe plugging device according to an embodiment provided by the present utility model;

[0025] Figure 3 Structural cross-sectional axonometric view of a pipe plugging device according to an embodiment provided by the present utility model;

[0026] Figure 4 Exploded view of the partial structure of a pipe plugging device according to an embodiment provided by the present utility model;

[0027] Figure 5 Exploded view of the partial structure of a pipe plugging device according to an embodiment provided by the present utility model;

[0028] Figure 6 Schematic diagram of the expansion assembly structure of a pipe plugging device according to an embodiment provided by the present utility model;

[0029] Figure 7 Schematic diagram of the guide rail structure of a pipe plugging device according to an embodiment provided by the present utility model;

[0030] Figure 8 Plan view of the guide rail of a pipe plugging device according to an embodiment provided by the present utility model;

[0031] Figure 9 Schematic diagram of the inner top block of a pipe plugging device according to an embodiment provided by the present utility model.

[0032] Figure 10 Schematic diagram of the outer top block of a pipe plugging device according to an embodiment provided by the present utility model. Detailed implementation manners

[0033] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present utility model in conjunction with the drawings of the specification.

[0034] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0035] Secondly, the present utility model is described in detail in conjunction with the schematic diagrams. When detailing the embodiments of the present utility model, for the sake of convenience in explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0036] Furthermore, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures, or characteristics that may be included in at least one implementation manner of the present utility model. The "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selectively mutually exclusive embodiment from other embodiments.

[0037] Embodiment 1

[0038] Referring to Figures 1-10 , which is the first embodiment of the present utility model. This embodiment provides a pipeline plugging device. By applying an external force to the power transmission component 200, the expansion component 100 is urged to expand inwards and outwards, thereby squeezing the external component 300 to closely fit the cable. At the same time, through the mutual cooperation of the locking cover 302 and the locking member 203, the effect of not being easily loosened and being convenient to install and simple to operate is achieved.

[0039] The pipeline plugging device includes an expansion component 100, a power transmission component 200, and an external component 300 covering the outside of the expansion component 100 and the power transmission component 200, and is integrally in the shape of a hollow cylinder.

[0040] The expansion component 100 serves as the receiving body of the entire pipeline plugging device and is located in the cavity inside the external component 300. Specifically, the expansion component 100 includes a set of guide rails 101, an annular slider 102 slidably connected to the surface of the guide rails 101, and a plurality of groups of top blocks 103 arranged in a circumferential array and slidably connected to the slider 102. The guide rails 101 serve as the carrier of the movement and are slidably engaged with the end face and the outer circumferential surface of the slider 102. The slider 102 is in the shape of an annular cylinder. The top blocks 103 pass through the slider 102 and are also slidably connected to the guide rails 101. The top blocks 103 are evenly arranged in a circumferential array on the slider 102 and can move centripetally or centrifugally along the radius of the slider 102 to achieve the inwards and outwards movement of the top blocks 103.

[0041] The power transmission component 200 is made of high-strength plastic and includes a sleeve 201 connected to the slot of the top block 103, a cover 202 meshed with the sleeve 201 by teeth, and a locking member 203 fixedly connected to the cover 202. The sleeve 201 is a barrel-shaped structure with grooves on its surface and is connected to both the cover 202 and the top block 103 to achieve force conduction. When an external force acts on the cover 202, the cover 202 rotates, driving the movement of the sleeve 201, and then driving the movement of the top block 103; the cover 202 is disc-shaped and can block the opening of the external component 300 to prevent foreign objects from entering and interfering with the structure inside the cavity of the external component 300; the lower surface of the locking member 203 is a one-way multi-tooth structure, which can cooperate with the external component 300 to fix the position after the cover 202 rotates, preventing loosening.

[0042] The external component 300 is divided into two parts, including a deformation cylinder 301 made of rubber and a locking cover 302 made of high-strength plastic. The locking cover 302 is fixedly connected to the deformation cylinder 301. The deformation cylinder 301 is a double-layer cylindrical structure with a cavity between the two layers. The expansion component 100 and the sleeve 201 in the power transmission component 200 are both located inside it. The inner wall of the locking cover 302 fits with the outer wall of the cover 202 to ensure that the cover 202 can tightly block the external component 300.

[0043] During use, the deformation cylinder 301 is placed into the pipeline to be blocked, and the locking cover 302 is exposed outside. The cover 202 is rotated, and the sleeve 201 meshed with the cover 202 by teeth also rotates synchronously along the inner wall of the deformation cylinder 301. Since the deformation cylinder 301 is connected to the slot of the top block 103, the top block 103 has a tendency to rotate. However, the top block 103 is also slidably connected to the guide rail 101, and the guide rail 101 is fixedly connected to the slot of the deformation cylinder 301, so the guide rail 101 remains stationary. The top block 103 moves centripetally or centrifugally along the notch on the surface of the guide rail 101 through the slider 102; the top block 103 fits with the two inner walls of the deformation cylinder 301, squeezing the deformation cylinder 301 to deform, thereby achieving the double-sided extrusion and clamping effect of the deformation cylinder 301 to achieve a tight seal; then, through the mutual cooperation of the locking cover 302 and the locking member 203, the rotation angle of the locking cover 302 is fixed, thereby preventing the reverse rebound of the deformation cylinder 301, achieving a stable effect, and the operation is simple and the installation is convenient. Only the cover 202 needs to be rotated.

[0044] Embodiment 2

[0045] Refer to Figures 1-10, which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: the guide rail 101 simultaneously assists in the inward and outward movement of the top block 103. The guide rail 101 includes an outer guide rail 101a and an inner guide rail 101b. The outer guide rail 101a and the inner guide rail 101b have exactly the same shape and are fixedly connected into a whole by mirror flipping along the end; the top block 103 includes a U-shaped outer top block 103a and an L-shaped inner top block 103b.

[0046] Specifically, a plurality of first sliding grooves 101a-1 are circumferentially arrayed along the vertical outer wall of the outer guide rail 101a, a plurality of first guiding grooves 101a-2 are circumferentially arrayed along the horizontal direction of the outer guide rail 101a, and a first annular convex block 101a-3 is arranged on the inner wall of the outer guide rail 101a; a plurality of second sliding grooves 101b-1 are circumferentially arrayed along the vertical outer wall of the inner guide rail 101b, a plurality of second guiding grooves 101b-2 are circumferentially arrayed along the horizontal direction of the inner guide rail 101b, and a second annular convex block 101b-3 is arranged on the inner wall of the inner guide rail 101b; both the first sliding groove 101a-1 and the second sliding groove 101b-1 are strip-shaped arc-shaped through grooves along the circumferential outer wall, and both the first guiding groove 101a-2 and the second guiding groove 101b-2 are strip-shaped through grooves. However, due to the vertical mirror image of the outer guide rail 101a and the inner guide rail 101b, the first guiding groove 101a-2 and the second guiding groove 101b-2 are integrally cross-shaped; both the first sliding groove 101a-1 and the second sliding groove 101b-1 are slidably connected to the top block 103, and the top block 103 can perform circular motion along the first sliding groove 101a-1 and the second sliding groove 101b-1. The first guiding groove 101a-2 and the second guiding groove 101b-2 limit the direction of the top block 103. The outer top block 103a performs circular outward expansion motion along the first sliding groove 101a-1 and the first guiding groove 101a-2, and the inner top block 103b performs circular inward contraction motion along the second sliding groove 101b-1 and the second guiding groove 101b-2. The circular outward expansion motion exerts an external extrusion, and the circular inward contraction motion exerts an internal extrusion, and the double extrusion realizes the sealing.

[0047] Furthermore, a first sliding block 103a-1 and a first guiding block 103a-2 are provided on the surface of the outer top block 103a, and a second sliding block 103b-1 and a second guiding block 103b-2 are provided on the surface of the inner top block 103b. The first sliding block 103a-1, the second sliding block 103b-1, the first guiding block 103a-2, and the second guiding block 103b-2 are all cylindrical structures. The first sliding block 103a-1 can slide smoothly in the first sliding groove 101a-1 of the outer guide rail 101a, the second sliding block 103b-1 can slide smoothly in the second sliding groove 101b-1 of the inner guide rail 101b, the first guiding block 103a-2 can slide smoothly in the first guiding groove 101a-2, and the second guiding block 103b-2 can slide smoothly in the second guiding groove 101b-2.

[0048] Further, the slider 102 is arranged in a group with the guide rail 101. The slider 102 is slidably connected to both the outer guide rail 101a and the inner guide rail 101b. The slider 102 is in the shape of an annular cylinder, and an annular groove 102b is provided on the circumferential surface. The annular groove 102b is adapted in size to the first annular protrusion 101a-3 and the second annular protrusion 101b-3 on the guide rail 101 and is slidably connected. Through the cooperation of the annular groove 102b, the first annular protrusion 101a-3 and the second annular protrusion 101b-3, the slider 102 can not only make a smooth circular motion along the guide rail 101, but also be fixed by the guide rail 101 and not fall off.

[0049] Correspondingly, a plurality of strip-shaped first limiting grooves 201a are arranged in a circumferential array on the outer wall of the sleeve 201. The first limiting grooves 201a are arranged in a group with the top block 103. The first sliding block 103a-1 on the outer top block 103a passes through the first sliding groove 101a-1 of the outer guide rail 101a and is snapped into the first limiting groove 201a. The second sliding block 103b-1 on the inner top block 103b passes through the second sliding groove 101b-1 of the inner guide rail 101b and is snapped into the first limiting groove 201a. That is, the first sliding block 103a-1 and the second sliding block 103b-1 are simultaneously limited by the first limiting groove 201a. That is, rotating the sleeve 201 can drive the outer top block 103a and the inner top block 103b to move. The cover 202 includes an annular cover seat 202a, and the cover seat 202a is mainly used to seal the deformation cylinder 301 to prevent foreign objects from entering; the seat post 202b is fixedly connected to the cover seat 202a and can apply an external force to it; a first clamping block 202c is also fixedly connected to the surface of the cover seat 202a for connecting with the sleeve 201. Correspondingly, a plurality of first clamping grooves 201b arranged in a circumferential array are also provided on the sleeve 201. The first clamping grooves 201b are engaged with the first clamping block 202c in a tooth-by-tooth manner. That is, the movement of the first clamping block 202c on the cover 202 drives the relative movement of the sleeve 201, thereby driving the top block 103 to move synchronously.

[0050] Importantly, the external component 300 is integrally concave-shaped. The deformation cylinder 301 is made of deformable rubber material, and its interior is the first cavity 301a. The expansion component 100 and the sleeve 201 in the power transmission component 200 are both located in the first cavity 301a. The entire rotational expansion movement occurs within the first cavity 301a, and the first cavity 301a serves as the bearing space for the entire movement. Multiple sets of arc-shaped grooves 101c are provided on the inner wall of the guide rail 101, and multiple sets of arc-shaped blocks 301b are provided on the surface of the deformation cylinder 301 in contact with the guide rail 101, i.e., within the first cavity 301a. Through the nested engagement of the arc-shaped blocks 301b and the arc-shaped grooves 101c, the relative fixation of the guide rail 101 and the deformation cylinder 301 is achieved. When the power transmission component 200 rotates, the guide rail 101 remains fixed, and the top block 103 moves relative to the guide rail 101 driven by the sleeve 201, thereby realizing the two-way expansion and contraction movement.

[0051] Furthermore, at positions near the ends of the two ends of the guide rail 101, a third annular groove 101d is provided, and a second elastic member 101d-1 is fixedly connected within the third annular groove 101d. The second elastic member 101d-1 serves as a buffer between the connected groups of guide rails 101, enabling the two guide rails 101 to neither be in close contact nor be overly limited, facilitating disassembly.

[0052] Embodiment 3

[0053] Referring to Figures 1-10 , this is the third embodiment of the present utility model. This embodiment provides a pipeline plugging device. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: the locking member 203 is fixedly connected to the outer circumferential wall of the cover 202 to fix the locking member 203 and prevent it from resetting due to the reverse spring-back force of the deformation cylinder 301.

[0054] Specifically, the locking member 203 is a ring-shaped three-layer structure, including a locking disk 203a, a plurality of first elastic members 203b fixedly connected to the circumferential array on the upper surface of the locking disk 203a, and a sliding disk 203c fixedly connected to the other end of the first elastic member 203b; a plurality of sets of positive teeth 203a-1 are circumferentially arrayed on the bottom surface of the locking disk 203a, and the locking disk 203a and the sliding disk 203c are concentric rings and are arranged in parallel. The first elastic member 203b serves to connect the locking disk 203a and the sliding disk 203c.

[0055] The locking cover 302 is an annular cylinder with grooves inside. It plays a role in cooperating with the locking member 203 to fix the locking member 203. At the same time, the outer diameter of the locking cover 302 is larger than that of the deformation cylinder 301, which can prevent the external component 300 from entering the inside of the pipe hole completely. Three annular grooves are arranged in parallel inside the locking cover 302, and the three annular grooves are connected. They are respectively an annular locking groove 302a for cooperating with the clamping groove of the locking disc 203a, an annular connecting groove 302b for cooperating with the first elastic member 203b, and an annular sliding groove 302c for sliding connection with the sliding disc 203c. A plurality of groups of reverse teeth 302a-1 are arranged in a circumferential array on the bottom surface of the annular locking groove 302a. The reverse teeth 302a-1 are engaged with the forward teeth 203a-1, so that the locking member 203 can only make a one-way circular motion under normal circumstances.

[0056] During the use process, rotate the sealing cover 202 to drive the locking member 203 fixedly connected thereto to make a circular motion. Since the reverse teeth 302a-1 on the annular locking groove 302a cooperate with the forward teeth 203a-1 on the locking disc 203a and both are one-way teeth, when the external force applied to the sealing cover 202 is stopped, the forward teeth 203a-1 and the reverse teeth 302a-1 are engaged, and the locking member 203 is fixed. Thus, the entire power transmission assembly 200 is fixed.

[0057] Correspondingly, gently lift the sealing cover 202 along the diameter direction of the deformation cylinder 301, and the locking member 203 fixedly connected to the sealing cover 202 also moves along the diameter direction of the deformation cylinder 301. The forward teeth 203a-1 on the locking disc 203a are disengaged from the reverse teeth 302a-1 on the annular locking groove 302a. At this time, the reset motion can be carried out.

[0058] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a particular embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0059] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present utility model or those features that are not relevant to the implementation of the present utility model).

[0060] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be a routine task of design, manufacturing and production.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and all of them should be covered by the scope of the claims of the present utility model.

Claims

1. A pipeline plugging device, characterized in that: including, an expansion assembly (100) comprising a guide rail (101), an annular slider (102) slidably connected to the surface of the guide rail (101), and a top block (103) slidably connected to the slider (102); and a power transmission assembly (200), the power transmission assembly (200) being connected to the expansion assembly (100) by a card slot, comprising a sleeve (201), a cover (202) engaged with the sleeve (201) by teeth, and a locking member (203) fixedly connected to the cover (202), and the whole assembly being cylindrical; an external assembly (300), the external assembly (300) covering the outside of the expansion assembly (100) and the power transmission assembly (200), comprising a deformation cylinder (301) and a locking cover (302) fixedly connected to the end of the deformation cylinder (301).

2. The pipeline plugging device according to claim 1, characterized in that: The guide rail (101) is composed of an outer guide rail (101a) and an inner guide rail (101b) fixedly connected to the outer guide rail (101a), and the inner guide rail (101b) has the same shape as the outer guide rail (101a) and is vertically mirror-inverted; A plurality of first sliding grooves (101a-1) are circumferentially arrayed along the vertical outer wall of the outer guide rail (101a), a plurality of first guiding grooves (101a-2) are circumferentially arrayed along the horizontal plate of the outer guide rail (101a), and a first annular protrusion (101a-3) is provided on the inner wall of the upper part of the outer guide rail (101a); a plurality of second sliding grooves (101b-1) are circumferentially arrayed along the vertical outer wall of the inner guide rail (101b), a plurality of second guiding grooves (101b-2) are circumferentially arrayed along the horizontal plate of the inner guide rail (101b), and a second annular protrusion (101b-3) is provided on the inner wall of the upper part of the inner guide rail (101b).

3. The pipe plugging device according to claim 2, wherein: The top block (103) includes an outer top block (103a) slidably matched with the outer guide rail (101a) and an inner top block (103b) slidably matched with the inner guide rail (101b); a first sliding block (103a-1) and a first guiding block (103a-2) are provided on the surface of the outer top block (103a), and the outer top block (103a) is in a shape of a capital "J"; a second sliding block (103b-1) and a second guiding block (103b-2) are provided on the surface of the inner top block (103b), and the inner top block is in an "L" shape.

4. The pipeline plugging device according to claim 3, characterized in that: The slider (102) is in a shape of an annular cylinder, and a plurality of first grooves (102a) are circumferentially arrayed thereon, and the first grooves (102a) are slidably connected to the outer top block (103a) and the inner top block (103b); an annular groove (102b) is provided on the circumference of the slider (102), and the annular groove (102b) is slidably connected to the first annular protrusion (101a-3) and the second annular protrusion (101b-3).

5. The pipe plugging device according to claim 3 or 4, characterized in that: A plurality of strip-shaped first limiting grooves (201a) are circumferentially and arrayedly formed on the outer wall of the sleeve (201), and the first limiting grooves (201a) are in clamping connection with the first sliding block (103a-1) and the second sliding block (103b-1); a plurality of first clamping grooves (201b) are circumferentially and arrayedly formed on the outer wall of the sleeve (201).

6. The pipeline plugging device according to claim 5, characterized in that: The cover (202) includes an annular cover seat (202a), a seat post (202b) fixedly connected to the surface of the cover seat (202a), and a first clamping block (202c) fixedly connected to the surface of the cover seat (202a) and located inside the external component (300), and the first clamping block (202c) is in tooth meshing connection with the first clamping groove (201b); The locking member (203) is fixedly connected to the cover (202), and the locking member (203) is of a ring-shaped three-layer structure, including a locking disc (203a) fixedly connected to the cover (202), a plurality of first elastic members (203b) fixedly connected to the upper surface of the locking disc (203a) in a circumferential array, and a sliding disc (203c) fixedly connected to the other end of the first elastic member (203b); a plurality of groups of forward teeth (203a-1) are circumferentially arrayed on the bottom surface of the locking disc (203a).

7. The pipe plugging device according to claim 6, characterized in that: The external component (300) is integrally of a concave-shaped structure, the deformation cylinder (301) is made of deformable rubber material, and a first cavity (301a) is arranged inside. The expansion component (100) is located inside the first cavity (301a), and the power transmission component (200) is in sliding connection with the inner wall of the first cavity (301a).

8. The pipe plugging device according to claim 7, wherein: The locking cover (302) is internally provided with an annular locking groove (302a), an annular connecting groove (302b), and an annular sliding groove (302c) communicated with the annular connecting groove (302b); a plurality of groups of reverse teeth (302a-1) are circumferentially arrayed on the bottom surface of the annular locking groove (302a), and the reverse teeth (302a-1) are in tooth meshing connection with the forward teeth (203a-1), and the annular sliding groove (302c) is in sliding connection with the sliding disc (203c).

9. The pipe plugging device according to claim 8, wherein: A plurality of groups of arc-shaped grooves (101c) are arranged on the inner wall of the guide rail (101), and a plurality of groups of arc-shaped blocks (301b) are arranged on the surface of the deformation cylinder (301) in contact with the guide rail (101), and the arc-shaped blocks (301b) can be nested and matched with the arc-shaped grooves (101c).

10. The pipe plugging device according to claim 9, wherein: Third annular grooves (101d) are provided at positions close to the ends of both ends of the guide rail (101), and second elastic members (101d-1) are fixedly connected in the third annular grooves (101d).

Images