Anchoring device

Abstract

The application relates to the technical field of anchor rod anchoring, in particular to an anchoring device which comprises an anchoring assembly, the anchoring assembly comprises a first telescopic structure, a second telescopic structure and a stirring structure, the first telescopic structure is provided with a first inner cavity and a first opening, the first inner cavity is connected with the first opening; the second telescopic structure is provided with a second inner cavity and a second opening, the second inner cavity is connected with the second opening; the stirring structure is located between the first telescopic structure and the second telescopic structure, and opposite ends of the stirring structure are connected with the first opening and the second opening respectively. The telescopic structure is used as the package of the anchoring agent, the technical problem that the anchoring effect is influenced by the existence of the plastic film on the outer surface of the stirring type resin anchoring agent in the prior art is solved, and the work efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of anchor bolt anchoring, and more specifically, to an anchoring device. Background Technology

[0002] With the development of tunnel transportation and underground engineering, rock bolt support has become the most commonly used and effective support method in tunnel and mine construction because it can actively mobilize the self-bearing capacity of the surrounding rock and conforms to the principles of the New Austrian Tunneling Method (NATM). However, this support also faces some problems in practice, leading to rock bolt failure.

[0003] For existing agitated resin anchoring agents, when they are placed in the anchor bolt hole and the anchor bolt is agitated, the presence of a plastic film on the outer surface of the anchoring agent generates a large number of plastic film fragments after agitation, which greatly affects the anchoring effect. Summary of the Invention

[0004] One technical problem this application aims to solve is to overcome the technical problem in the prior art where the presence of a plastic film on the outer surface of the stirred resin anchoring agent affects the anchoring effect, and to provide an anchoring device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anchoring device includes an anchoring assembly, the anchoring assembly comprising:

[0007] A first telescopic structure, wherein the first telescopic structure is provided with a first inner cavity and a first opening, and the first inner cavity is connected to the first opening;

[0008] A second telescopic structure, the second telescopic structure having a second inner cavity and a second opening, the second inner cavity and the second opening being connected; and

[0009] A stirring structure is located between the first telescopic structure and the second telescopic structure, and the two opposite ends of the stirring structure are respectively connected to the first opening and the second opening.

[0010] Furthermore, the first telescopic structure and / or the second telescopic structure are corrugated and extend along the first direction.

[0011] Furthermore, the first end of the first telescopic structure and the second end of the first telescopic structure are disposed opposite each other along the first direction;

[0012] When the second end of the first telescopic structure moves along the first direction to the first end of the first telescopic structure, the first end of the first telescopic structure and the second end of the first telescopic structure are connected by a snap-fit.

[0013] Furthermore, the first end of the second telescopic structure and the second end of the second telescopic structure are arranged opposite to each other along the first direction;

[0014] When the second end of the second telescopic structure moves along the first direction to the first end of the second telescopic structure, the first end of the second telescopic structure and the second end of the second telescopic structure are connected by a snap-fit.

[0015] Furthermore, one end of the stirring structure is adapted to the second end of the first telescopic structure, and the other end of the stirring structure is adapted to the first end of the second telescopic structure.

[0016] Furthermore, the stirring structure includes two stirring elements, which are symmetrically arranged along the second direction;

[0017] Each of the stirring components has one end threadedly connected to the second end of the first telescopic structure and the other end threadedly connected to the first end of the second telescopic structure; the second direction is perpendicular to the first direction.

[0018] Further, the stirring element includes:

[0019] Two connectors are symmetrically arranged along a first direction;

[0020] A stirring element is disposed between the two connecting elements, and the two connecting elements are connected by the stirring element.

[0021] Furthermore, the connector is configured in an L-shape.

[0022] Furthermore, both the first opening and the second opening are encapsulated with a thin film layer.

[0023] Furthermore, the anchoring assembly includes a guide structure connected to a first end of the first telescopic structure.

[0024] The technical solution of this invention has the following advantages:

[0025] In use, the anchoring device of this invention inserts the telescopic component into the bottom of the anchor bolt hole. A pressure-type anchor bolt is applied to the end of the second telescopic structure furthest from the first telescopic structure (i.e., the tail end of the second telescopic structure). The second telescopic structure is elastically compressed towards the bottom of the anchor bolt hole. Simultaneously, because the stirring structure is located between the first and second telescopic structures, when the second telescopic structure is elastically compressed, the stirring structure squeezes the first and second telescopic structures at opposite ends, thus puncturing the polyester film at the first opening of the first telescopic structure and the polyester film at the second opening of the second telescopic structure. This allows for the mixing of anchoring agent A and anchoring agent B. After mixing, anchoring agents A and B solidify, and the stirring structure further agitates them, squeezing out anchoring agents A and B and allowing them to flow into the anchor bolt hole, thereby bonding and anchoring the anchor bolt. This invention uses the telescopic structure as packaging for the anchoring agent, solving the technical problem in the prior art where the presence of a plastic film on the outer surface of the stirred resin anchoring agent affects the anchoring effect, thus improving work efficiency. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Fig. 1 This diagram shows the structure of the anchoring device in this embodiment;

[0029] Fig. 2 This diagram shows the structure of the first telescopic structure in this embodiment;

[0030] Fig. 3 This diagram shows the structure of the second telescopic structure in this embodiment;

[0031] Fig. 4 This diagram shows the structural schematic of the stirring structure in this embodiment;

[0032] Fig. 5 This diagram shows the structural schematic of the anchoring in this embodiment;

[0033] Fig. 6 This diagram shows the structural schematic of the anchoring device under compression in this embodiment.

[0034] The reference numerals in the attached drawings are explained as follows: 10, anchoring assembly; 11, first telescopic structure; 111, first end of the first telescopic structure; 112, second end of the first telescopic structure; 12, second telescopic structure; 121, first end of the second telescopic structure; 122, second end of the second telescopic structure; 13, stirring structure; 14, first inner cavity; 15, first opening; 16, second inner cavity; 17, second opening; 20, polyester film layer; 30, guide structure; 40, buckle; 41, first hook section; 42, second hook section; 43, third hook section; 44, fourth hook section; 50, anchor rod; 51, pressure plate; 52, free end anchor rod; 53, outer ring of anchor rod; 54, inner ring of anchor rod; 55, free end anchoring pipe; 56, grout stop plug; 57, tray lock; X, first direction; Y, second direction. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] like Figs. 1 to 3 As shown, an embodiment of the present invention provides an anchoring device, including an anchoring assembly 10. The anchoring assembly 10 includes: a first telescopic structure 11, a second telescopic structure 12, and a stirring structure 13. The first telescopic structure 11 has a first inner cavity 14 and a first opening 15, which are connected. The second telescopic structure 12 has a second inner cavity 16 and a second opening 17, which are connected. The stirring structure 13 is located between the first telescopic structure 11 and the second telescopic structure 12, and its opposite ends are connected to the first opening 15 and the second opening 17, respectively.

[0037] In this embodiment, before the anchoring device is used, the first inner cavity 14 is equipped with anchoring agent A, wherein the first telescopic structure 11 is telescopic and can serve as the outer packaging of anchoring agent A; the second inner cavity 16 is equipped with anchoring agent B, wherein the second telescopic structure 12 is telescopic and can serve as the outer packaging of anchoring agent B; in addition, the first opening 15 and the second opening 17 are provided with polyester film for sealing.

[0038] When using the anchoring device, the telescopic component is inserted into the bottom of the anchor bolt hole. The pressure anchor bolt is applied to the end of the second telescopic structure 12 away from the first telescopic structure 11, i.e., the tail end of the second telescopic structure 12. The second telescopic structure 12 is elastically compressed towards the bottom of the anchor bolt hole. At the same time, since the stirring structure 13 is located between the first telescopic structure 11 and the second telescopic structure 12, when the second telescopic structure 12 is elastically compressed, the stirring structure 13 squeezes the first telescopic structure 11 and the second telescopic structure 12 at opposite ends, which can puncture the polyester film set in the first opening 15 of the first telescopic structure 11 and the polyester film set in the second opening 17 of the second telescopic structure, thereby achieving the mixing of anchoring agent A and anchoring agent B. After the anchoring agents A and B are mixed, a coagulation effect is produced. At the same time, the stirring structure 13 stirs the mixture, squeezing out anchoring agents A and B and flowing into the anchor bolt hole, thereby bonding and anchoring the anchor bolt.

[0039] This embodiment uses a telescopic structure as packaging for the anchoring agent, which solves the technical problem in the prior art where the presence of a plastic film on the outer surface of the stirred resin anchoring agent affects the anchoring effect, thereby improving the anchoring efficiency.

[0040] like Figs. 1 to 3 As shown, in this embodiment, the first telescopic structure 11 and / or the second telescopic structure 12 extend in a corrugated shape along the first direction X.

[0041] In an embodiment, the first telescopic structure 11 can be selected to be corrugated and extend along the first direction X, wherein the first direction X is set as the axial direction of the first telescopic structure 11; the first telescopic structure 11 can be selected as a corrugated telescopic tube, and the telescopicity of the corrugated telescopic tube can be used as packaging for the anchoring agent A in the first telescopic structure 11.

[0042] In this embodiment, the second telescopic structure 12 may also be selected as a corrugated structure extending along the first direction X; the second telescopic structure 12 may be selected as a corrugated telescopic tube, and the telescopicity of the corrugated telescopic tube may be used as packaging for the anchoring agent B in the second telescopic structure 12.

[0043] In the embodiments, both the first telescopic structure 11 and the second telescopic structure 12 may be selected to be corrugated and extend along the first direction X.

[0044] In this embodiment, the first telescopic structure 11 and the second telescopic structure 12 are preferably both set as telescopic tubes, which are used as packaging for anchoring agents A and B respectively. This allows for the mixing of anchoring agents A and B, resulting in a coagulation effect and improving the anchoring effect.

[0045] This embodiment solves the problem that in the prior art, anchoring agents are mostly packaged in the form of resin films, and are produced in a fixed solid-to-resin ratio, which makes it difficult to meet the needs of anchoring agents with special solid-to-resin ratios. In this embodiment, the solid-to-resin ratio of the anchoring agent can be adjusted at the factory, which provides greater flexibility.

[0046] like Figs. 1 to 3 As shown, in this embodiment, the first end 111 of the first telescopic structure and the second end 112 of the first telescopic structure are arranged opposite to each other along the first direction X;

[0047] When the second end 112 of the first telescopic structure moves along the first direction X to the first end 111 of the first telescopic structure, the first end 111 of the first telescopic structure and the second end 112 of the first telescopic structure are connected by a buckle 40.

[0048] In the embodiment, the buckle 40 includes a first hook segment 41 and a second hook segment 42; two first hook segments 41 are provided at the first end 111 of the first telescopic structure. The two first hook segments 41 are symmetrically arranged along the second direction Y. Each first hook segment 41 is provided with a snap-fit ​​part. The snap-fit ​​part is protruding and the snap-fit ​​part of each first hook segment 41 protrudes towards the snap-fit ​​part of the other first hook segment 41 opposite to it.

[0049] In this embodiment, the second end 112 of the first telescopic structure is provided with two second hook segments 42. These two second hook segments 42 are symmetrically arranged along the second direction Y. Each second hook segment 42 is provided with a locking part, which is protruding. The locking part of each second hook segment 42 is opposite to the locking part of the other second hook segment 42. The interval between the two first hook segments 41 is greater than the interval between the two second hook segments 42.

[0050] When the second end 112 of the first telescopic structure moves along the first direction X to the first end 111 of the first telescopic structure, the first hook segment 41 and the second hook segment 42 located on the same side are connected and fixed by their respective hooking parts, thereby realizing that the first end 111 of the first telescopic structure and the second end 112 of the first telescopic structure are connected and fixed by the buckle 40.

[0051] This structural design in this embodiment helps to overcome the rebound force after the first telescopic structure 11 is compressed, reduces the elastic force of the first telescopic structure 11 on the pressure anchor rod, facilitates the full mixing of anchoring agent A and anchoring agent B, improves the coagulation effect and anchoring effect, saves time and effort, and improves anchoring efficiency.

[0052] like Figs. 1 to 6 As shown, in this embodiment, the first end 121 and the second end 122 of the second telescopic structure are arranged opposite to each other along the first direction X;

[0053] When the second end 122 of the second telescopic structure moves along the first direction X to the first end 121 of the second telescopic structure, the first end 121 of the second telescopic structure and the second end 122 of the second telescopic structure are connected by a snap fastener 40.

[0054] In the embodiment, the buckle 40 includes a third hook segment 43 and a fourth hook segment 44; two third hook segments 43 are provided at the first end 121 of the second telescopic structure. These two third hook segments 43 are symmetrically arranged along the second direction Y. Each third hook segment 43 is provided with a snap-fit ​​part, which is protruding. The snap-fit ​​part of each third hook segment 43 is protruding away from the snap-fit ​​part of the other third hook segment 43 opposite to it.

[0055] In this embodiment, the second end 122 of the second telescopic structure is provided with two fourth hook segments 44. These two fourth hook segments 44 are symmetrically arranged along the second direction Y. Each fourth hook segment 44 is provided with a locking part, which is protruding. The locking part of each fourth hook segment 44 protrudes towards the locking part of the other fourth hook segment 44 opposite to it. The interval between the two third hook segments 43 is smaller than the interval between the two fourth hook segments 44.

[0056] When the second end 122 of the second telescopic structure moves along the first direction X to the first end 121 of the second telescopic structure, the first end 111 of the first telescopic structure and the second end 112 of the first telescopic structure are connected and fixed by the buckle 40.

[0057] This structural design in this embodiment helps to overcome the rebound force after the second telescopic structure 12 is compressed, reduces the elastic force of the second telescopic structure 12 on the pressure anchor rod, facilitates the full mixing of anchoring agent A and anchoring agent B, improves the coagulation effect and anchoring effect, saves time and effort, and improves anchoring efficiency.

[0058] like Figs. 1 to 6 As shown, in this embodiment, one end of the stirring structure 13 is adapted to the second end 112 of the first telescopic structure, and the other end of the stirring structure 13 is adapted to the first end 121 of the second telescopic structure.

[0059] In this embodiment, the stirring structure 13 includes two stirring elements 18, which are symmetrically arranged along the second direction Y.

[0060] Each stirring component 18 has one end threadedly connected to the second end 112 of the first telescopic structure, and the other end threadedly connected to the first end 121 of the second telescopic structure; the second direction Y is set perpendicular to the first direction X; and the cross-section of each stirring component 18 is set as a T-shaped structure.

[0061] In the embodiment, each stirring component 18 includes two connecting sections 181 and a stirring section 182; the two connecting sections 181 are symmetrically arranged along the first direction X; the stirring section 182 is disposed between the two connecting sections 181 to stir the anchoring agent A and the anchoring agent B after they are combined and then flow out, which is suitable for anchoring special anchor rods that rotate at high speed.

[0062] In this embodiment, the two connecting sections 181 are connected by a stirring section 182. The connecting sections 181 are L-shaped. One end of each connecting section 181 near the opening is threaded; that is, the threads on the four L-shaped connecting sections 181 correspond to the threads on the two second hook sections 42 and the two third hook sections 43, thereby achieving a threaded connection between the stirring structure 13 and the first telescopic structure 11 and the second telescopic structure 12.

[0063] In this embodiment, the two second hook segments 42 and the two third hook segments 43 are configured as an L-shaped structure, and the interval between the two connecting segments 181 symmetrically arranged along the second direction Y is less than the interval between the two second hook segments 42 and the two third hook segments 43.

[0064] This embodiment features a threaded connection design, which facilitates the installation and disassembly of the anchoring device.

[0065] 9 as Fig. 1 , 2 As shown, in this embodiment, both the first opening 15 and the second opening 17 are encapsulated with a polyester film layer 20.

[0066] In this embodiment, the interval between the two second hook segments 42 and the interval between the two third hook segments 43 are greater than the distance between the two connecting segments 181 arranged opposite each other along the second direction Y. Therefore, the polyester film sealed on the opening can be pierced by the four connecting segments 181 of the stirring member 18, and the anchoring agent can be squeezed out; which is beneficial to the anchoring of the anchor rod.

[0067] like Figs. 1 to 3 As shown, in this embodiment, the anchoring component 10 includes a guide structure 30, which is connected to the first end 111 of the first telescopic structure.

[0068] In this embodiment, the guide structure 30 can be set as the guide head of the anchoring device, which facilitates the smooth insertion of the anchoring agent into the bottom of the anchor hole.

[0069] The anchor 50 of this invention is a pressure-type anchor. The anchor 50 includes a bearing plate 51, which compresses the second end 122 of the second telescopic structure and bears pressure under pre-tightening force after anchoring. It also includes a free-end anchor 52, which bonds to the surrounding rock mass through an anchoring agent to form an anchoring section a. An outer ring 53 covers the inner ring 54 of the anchor. A free-end anchoring pipe 55 forms a free section b with the surrounding rock mass through the anchoring agent. A grout stopper 56 prevents the anchoring agent from flowing out, ensuring the anchoring effect. During operation, the anchor squeezes the anchoring agent, mixing the anchoring agents AB and squeezing them out. After the anchoring agent has fully taken effect, the anchor is tensioned, resulting in an anchoring section a and a free section b. The anchor in the free section b can elongate, ensuring the application of pre-tightening force. Simultaneously, the bearing plate 51 and the anchor body of the free section b compress the anchor body of the anchoring section a, creating a triaxial stress state. This can be considered a full-length anchor with a free section, effectively loosening and dispersing surrounding rock hazards with fractures and joints.

[0070] The anchor 50 of this invention is a pressure-type anchor. The anchor 50 includes a pressure plate 51, which is used to compress the second end 122 of the second telescopic structure and to bear pressure under the pre-tightening force after anchoring. It also includes a free-end anchor 52, which is bonded to the surrounding rock mass by an anchoring agent to form an anchoring section a. The outer ring 53 of the anchor 53 covers the inner ring 54 of the anchor 52. The free-end anchoring pipe 55 is bonded to the surrounding rock mass by an anchoring agent to form a free section b. The grout stopper 56 can prevent the anchoring agent from flowing out and ensure the anchoring effect. During operation, the anchor bolt 50 squeezes the anchoring agent to mix the anchoring agents A and B and then squeezes them out. After the anchoring agent has fully taken effect, the tray lock 57 tensions the anchor bolt. At this time, it is divided into anchoring section a and free section b. The anchor bolt in free section b can be extended to ensure the application of pre-tightening force. At the same time, the bearing plate 51 and the anchor body of free section b squeeze the anchor body of anchoring section a, so that it forms a three-dimensional stress state. This can be regarded as a full-length anchor with a free section, which can effectively loosen broken and jointed surrounding rock disasters.

[0071] In summary, the present invention provides an anchoring device, including an anchoring assembly 10, which includes: a first telescopic structure 11, a second telescopic structure 12, and a stirring structure 13; the first telescopic structure 11 has a first inner cavity 14 and a first opening 15, which are connected; the second telescopic structure 12 has a second inner cavity 16 and a second opening 17, which are connected; the stirring structure 13 is located between the first telescopic structure 11 and the second telescopic structure 12, and its opposite ends are connected to the first opening 15 and the second opening 17, respectively. Before use, the anchoring device of the present invention has an anchoring agent A installed in the first inner cavity 14, wherein the first telescopic structure 11 is elastic and can serve as an outer packaging for the anchoring agent A; the second inner cavity 16 has an anchoring agent B installed, wherein the second telescopic structure 12 is elastic and can serve as an outer packaging for the anchoring agent B; and the first opening 15 and the second opening 17 are sealed with a polyester film. When using the anchoring device, the telescopic component is inserted into the bottom of the anchor bolt hole. The pressure anchor bolt is applied to the end of the second telescopic structure 12 away from the first telescopic structure 11, i.e., the tail end of the second telescopic structure 12. The second telescopic structure 12 is elastically compressed towards the bottom of the anchor bolt hole. At the same time, since the stirring structure 13 is located between the first telescopic structure 11 and the second telescopic structure 12, when the second telescopic structure 12 is elastically compressed, the stirring structure 13 squeezes the first telescopic structure 11 and the second telescopic structure 12 at opposite ends, which can puncture the polyester film set in the first opening 15 of the first telescopic structure 11 and the polyester film set in the second opening 17 of the second telescopic structure, thereby achieving the mixing of anchoring agent A and anchoring agent B. After the anchoring agents A and B are mixed, a coagulation effect is produced. At the same time, the stirring structure 13 stirs the mixture, squeezing out anchoring agents A and B and flowing into the anchor bolt hole, thereby bonding and anchoring the anchor bolt. This invention uses a telescopic structure as packaging for the anchoring agent, which solves the technical problem in the prior art where the presence of a plastic film on the outer surface of the stirred resin anchoring agent affects the anchoring effect, thereby improving the anchoring efficiency.

[0072] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0073] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An anchoring device, characterized in that, Includes an anchoring assembly (10), the anchoring assembly (10) comprising: A first telescopic structure (11) is provided with a first inner cavity (14) and a first opening (15), and the first inner cavity (14) and the first opening (15) are connected; A second telescopic structure (12) is provided with a second inner cavity (16) and a second opening (17), the second inner cavity (16) and the second opening (17) being connected; and A stirring structure (13) is located between the first telescopic structure (11) and the second telescopic structure (12). The two ends of the stirring structure (13) are respectively connected to the first opening (15) and the second opening (17). The first end (111) of the first telescopic structure and the second end (112) of the first telescopic structure are arranged opposite to each other along a first direction; When the second end (112) of the first telescopic structure moves along the first direction to the first end (111) of the first telescopic structure, the first end (111) of the first telescopic structure and the second end (112) of the first telescopic structure are connected by a buckle (40); The first end (121) and the second end (122) of the second telescopic structure are arranged opposite to each other along the first direction; When the second end (122) of the second telescopic structure moves along the first direction to the first end (121) of the second telescopic structure, the first end (121) of the second telescopic structure and the second end (122) of the second telescopic structure are connected by a buckle (40); One end of the stirring structure (13) is adapted to the second end (112) of the first telescopic structure, and the other end of the stirring structure (13) is adapted to the first end (121) of the second telescopic structure; The stirring structure (13) includes two stirring elements (18), which are symmetrically arranged along the second direction; In this configuration, one end of each stirring element (18) is threadedly connected to the second end (112) of the first telescopic structure, and the other end is threadedly connected to the first end (121) of the second telescopic structure; the second direction is perpendicular to the first direction. The stirring component (18) includes: Two connecting segments (181) are symmetrically arranged along a first direction; A stirring section (182) is disposed between the two connecting sections (181), and the two connecting sections (181) are connected through the stirring section (182).

2. The anchoring device according to claim 1, characterized in that, The first telescopic structure (11) and / or the second telescopic structure (12) are corrugated and extend along the first direction.

3. The anchoring device according to claim 1, characterized in that, The connecting segment (181) is arranged in an L-shape.

4. The anchoring device according to claim 1, characterized in that, Both the first opening (15) and the second opening (17) are encapsulated with a thin film layer (20).

5. The anchoring device according to claim 1, characterized in that, The anchoring assembly (10) includes a guide structure (30) which is connected to the first end (111) of the first telescopic structure.

Images