An armored cable

Abstract

The present invention relates to the technical field of cables, and specifically to an armored cable, including: a cable outer sheath, wherein arc-shaped connecting parts are equidistantly arranged on the inner wall of the cable outer sheath, and pressing parts are located between two adjacent arc-shaped connecting parts. A deformable compression inner cavity is arranged between the separately arranged cables. One of the purposes is to provide a deformation space during wire clamping. Secondly, the compression inner cavity can quickly recover after wire clamping. In addition, when the cable is subjected to external radial pressure, the metal arched part can provide an outward force and can also support the module support at the compression inner cavity. When the module support at the compression inner cavity is deformed, the metal arched part disperses the force towards the expansion foot pieces. When the limiting contact feet on the expansion foot pieces come into contact during the approaching process and reach the extrusion upper limit, after the limiting contact feet come into contact, the support part can achieve the purpose of jacking up the module support, thereby preventing the problems of overall damage, deformation, and breakage from occurring.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and particularly to an armored cable. Background Art

[0002] With the gradual acceleration of the urbanization process, urban planning is becoming more and more modern. During the urban construction process, laying cables underground has become the lowest construction requirement. At the same time, during the urban transformation process, various cables erected in the air also need to be laid underground. Currently, non-excavation technology is often used for cable laying underground. This construction method has the advantages of not affecting traffic, causing little damage to the stratum structure, and short construction period. At the same time, for non-excavation construction methods, the requirements for cables are high, specifically: the cables need to have high strength, good rigidity and toughness, etc. In addition, due to the characteristics of the cables themselves, they also need to have high flame retardancy to prevent fires caused by circuit short circuits and other problems, resulting in safety accidents.

[0003] During the construction and laying of existing cables, sometimes the cables need to be synchronized with the construction. Therefore, the cables need to be pre-laid on the ground and then fixed centrally. In this way, the construction environment is complex. For ordinary cables in the face of complex environments, such as high-frequency extrusion, or even local stress on the cable, it will cause the overall deformation and distortion of the cable, which will affect the overall later use. Moreover, when laying this kind of armored cable, wiring needs to be carried out, and the existing peeling operation is troublesome.

[0004] The inventor aims at the above-mentioned situation to solve the technical problems of easy damage and troublesome peeling of branch lines during the construction of existing cables. Summary of the Invention

[0005] In order to achieve the above object, the main technical solutions adopted by the present invention include: an armored cable, comprising:

[0006] A cable outer sheath, wherein arc-shaped connecting parts are equidistantly arranged on the inner wall of the cable outer sheath, and pressing parts are located between two of the arc-shaped connecting parts;

[0007] An armored part, which is arranged in the inner cavity of the cable outer sheath, and the armored part includes a pressed part that fits on the inner wall of the arc-shaped connecting part, and a wire locking channel that is located between the pressed parts and forms an inner arc state towards the axial center position. A support part is arranged in the compression inner cavity of the pressed part, and a clamping component is arranged in the wire locking channel;

[0008] Separate cables, which are arranged in the wire locking channel and are clamped by the clamping component. The separate cables include branch wiring and an outer protective sheath wrapped around the branch wiring;

[0009] The central armored part, the central armored part is sleeved at the axial position of the armored part, which includes a central main line, a central sleeve is sleeved on the central main line, and the central sleeve is a hexagonal prism, and three faces of the central sleeve are connected to the outer wall of the wire-locking channel as a whole, and positioning seats for resetting the support part are arranged on the other three faces.

[0010] Preferably, the cable outer sheath includes a cable outer skin, arc-shaped connecting parts arranged equidistantly in the cable outer skin, the two arc-shaped connecting parts are fixedly connected by a festering connecting strip, and a pressing piece part is arranged inside the festering connecting strip.

[0011] Preferably, the pressed part includes a plurality of flexible connecting parts and module support parts, the flexible connecting parts and the module support parts are alternately connected as a whole, the flexible connecting parts and the module support parts are respectively provided with a first connecting port and a second connecting port at the edge position of the wire-locking channel, a steel wire rope passes through the first connecting port and the second connecting port, a chamfered strip is sleeved in the second connecting port, and a steel wire rope through groove is reserved between the chamfered strip and the inner wall of the second connecting port.

[0012] Preferably, the clamping assembly includes an elastic hoop, elastic clamping feet are arranged at both ends of the elastic hoop, a buckling foot is arranged at one end of the elastic clamping foot, and the buckling foot is connected to the edge of the pressed part through a silicone connecting part.

[0013] Preferably, the support part includes a metal arched part, and the metal arched part is attached to the inner wall of the compression cavity, expansion foot pieces are arranged on both sides of the metal arched part, and the expansion foot pieces and the metal arched part form a through ring.

[0014] Preferably, a plurality of axially arranged through rings are connected in series by a reset pull rope, a limiting contact foot is arranged at the bottom end of the expansion foot piece, and an insertion gap is reserved between the limiting contact foot and the inner wall of the compression cavity close to the axis.

[0015] Preferably, the central sleeve includes an inner sleeve, an isolation cavity is arranged inside the inner sleeve, and silicone connecting blocks are arranged at both ends of the inner sleeve.

[0016] Preferably, a positioning seat is arranged inside the compression cavity on the outer side of the inner sleeve, the positioning seat includes a π-shaped seat, and deviation-correcting convex blocks are arranged at both ends of the π-shaped seat.

[0017] Preferably, the outer protective sleeve includes an inner steel wire mesh sleeve and a positioning ring, an outer rubber sleeve is arranged on the surface of the inner steel wire mesh sleeve, and the positioning ring is sleeved on the branch wire.

[0018] Preferably, multiple groups of prismatic protective sleeves are equidistantly and fixedly connected on the surfaces of the plurality of the positioning rings, the rhombus-shaped protective sleeves on two axially adjacent positioning rings are staggered, the prismatic protective sleeves are provided with fixed edges, the fixed edges are fixed to the built-in wire mesh sleeve, and the staggered positions of two axially adjacent prismatic protective sleeves are reserved to form an axially-oriented rhombus-shaped cavity, and a prismatic reset strip runs through the prismatic cavity.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. The arc-shaped connecting part is a plurality of arc-shaped plate-shaped hard rubbers connected to form an armor plate through soft rubber. In this way, after stripping the outer skin of the cable, the soft rubber can be cut to expose the internal line, and the arc-shaped plate-shaped hard rubber can be removed. After removal, the cable can be separated. The arc-shaped plate-shaped hard rubber can also be separated and cut from the ulcerated connecting strip. The ulcerated connecting strip is used to indicate that there are separate cables at this location, which is convenient for operators to separate the internal wires. In this way, the stripping operation is more convenient and convenient for laying the cable during construction. The role of the pressing part The utility model is used to restrain the branch cables to ensure that the branch cables are stably located in the wire locking channel, and when the cable jacket is under pressure, most of the pressure is at the position of the arc-shaped connecting part, and the arc-shaped connecting part will deform to both sides, so that the deformation position is toward the pressing piece part, so that the pressing piece part can apply an inward extrusion force to the outer protective sleeve to ensure that the outer protective sleeve is always clamped by the clamping component, thereby increasing the firmness and plasticity of the armored cable, and can also disperse the pressure to ensure that the pressure can be dispersed to the armor part, thereby ensuring the overall stability.

[0021] 2. A deformable compression cavity is provided between the separate cables. One of the purposes is to provide deformation space when the cable is clamped, and the second is to quickly recover after the cable is clamped through the compression cavity. In addition, when the cable is subjected to external radial pressure, the metal arch part can provide outward force, and can also support the module support at the compression cavity. When the module support at the compression cavity is deformed, the metal arch part disperses the force to the expansion leg, and when the limiting contact pins on the expansion leg come into contact during the process of approaching, the extrusion upper limit is reached. In this way, after the limiting contact pins come into contact, the support part can form the purpose of lifting the module support, thereby preventing the overall damage, deformation and breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 A three-dimensional diagram of an armored cable of the present invention;

[0024] Figure 2 Front view of an armored cable of the present invention;

[0025] Figure 3 Schematic diagram of the armored part in an armored cable of the present invention;

[0026] Figure 4 Cross-sectional view of the central sleeve in an armored cable of the present invention;

[0027] Figure 5 Schematic diagram of the outer protective sleeve in an armored cable of the present invention;

[0028] Figure 6 Schematic diagram of the clamping assembly in an armored cable of the present invention;

[0029] Figure 7 Schematic diagram of the arc connection part in an armored cable of the present invention;

[0030] Figure 8 Front view of the arc connection part in an armored cable of the present invention.

[0031] Reference numerals in the drawings are: 1. Cable outer sleeve; 11. Cable outer skin; 12. Arc connection part; 13. Festering connection strip; 14. Pressing part; 2. Central sleeve; 21. Inner sleeve; 22. Isolation cavity; 23. Silicone connection block; 24. Positioning seat; 241. π-shaped seat; 242. Deviation correction convex block; 3. Armored part; 31. Compressed part; 310. Metal arched part; 3101. Wire locking channel; 311. Through ring; 312. Expanding foot piece; 313. Limit contact foot; 314. Silicone connection part; 32. Module support; 33. Flexible connection part; 34. Second connection port; 35. First connection port; 36. Chamfering strip; 37. Steel wire rope; 38. Compression inner cavity; 39. Reset pull rope; 4. Outer protective sleeve; 41. Inner steel wire mesh sleeve; 42. Outer rubber sleeve; 43. Positioning ring; 44. Rhombic protective sleeve; 45. Fixed edge; 46. Rhombic cavity; 47. Rhombic reset strip; 5. Branch wiring; 6. Central main line; 7. Clamping assembly; 71. Elastic clamping foot; 72. Elastic hoop; 73. Buckling foot. Detailed implementation manners

[0032] The following will cooperate with the drawings and embodiments to detail the implementation manners of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly.

[0033] Embodiment 1

[0034] As Figure 1-8As shown in the figure, Embodiment 1 provides an armored cable, which includes a cable outer sheath 1. Arc-shaped connecting parts 12 are equidistantly arranged on the inner wall of the cable outer sheath 1, and pressing parts 14 are located between two arc-shaped connecting parts 12. The cable outer sheath 1 includes a cable outer skin 11. The arc-shaped connecting parts 12 are equidistantly arranged inside the cable outer skin 11. Two arc-shaped connecting parts 12 are fixedly connected through a frayed connecting strip 13. A pressing part 14 is arranged inside the frayed connecting strip 13.

[0035] The cable outer skin 11 is made of fireproof plastic and is internally provided with a fiber braided mesh sleeve for improving the toughness and strength of the cable outer skin 11. The arc-shaped connecting parts 12 are formed by connecting multiple arc-shaped plate-like hard rubbers through soft rubber to form an armored plate. In this way, after the cable outer skin 11 is peeled off, the soft rubber can be cut to expose the internal circuit, and the arc-shaped plate-like hard rubber can be removed. After removal, the cable can be branched. The arc-shaped plate-like hard rubber can also be separated and cut from the frayed connecting strip 13. The frayed connecting strip 13 is used to indicate that there are branched cables at this position, facilitating the operator to separate the internal wires. In this way, the peeling operation is more convenient and is conducive to the laying during the cable construction process. The function of the pressing part 14 is to bind the branched cables to ensure that the branched cables are stably located in the wire locking channel 3101. Moreover, when the cable outer sheath 1 is pressed and most of the pressure is at the position of the arc-shaped connecting part 12, the arc-shaped connecting part 12 will deform towards both sides. In this way, the deformed position faces the pressing part 14, so that the pressing part 14 exerts an inward squeezing force on the outer wrapping protective sleeve 4, ensuring that the outer wrapping protective sleeve 4 is always clamped by the clamping assembly 7, thereby increasing the firmness and plasticity of the armored cable and also dispersing the pressure to ensure that the pressure can be dispersed to the armored part 3, thereby ensuring the overall stability.

[0036] In addition, due to the setting of the clamping assembly 7, the clamping assembly 7 cooperates with the armored part 3 to clamp the branched cables. However, when branching, that is, when the end of the cable is peeled off, when the pressing part 14 is removed from the branched cables and the armored part 3 at this position is cut off, after the clamping assembly 7 is released from the restraint, the branched cables can be quickly pulled out from the inside by using the elasticity of the clamping assembly 7, thereby ensuring the convenience of cable laying and branching.

[0037] Embodiment 2

[0038] On the basis of Embodiment 1, the distinguishing technical feature of this embodiment is that the armored part 3 is arranged in the inner cavity of the cable outer sheath 1, and the armored part 3 includes a pressure-receiving part 31 attached to the inner wall of the arc-shaped connecting part 12, and a wire-locking channel 3101 located between the pressure-receiving parts 31 and forming an inner arc state towards the axial center position. The wire-locking channel 3101 is used to clip the separately arranged cables into it. A support part is arranged in the compression inner cavity 38 of the pressure-receiving part 31. The support part is used to improve the overall radial strength, and the support part is used to enable the overall cable to play an anti-extrusion buffering role while maintaining a linear shape and has good resilience. In this way, the deformation range is small, the extrusion degree on the internal circuit is low, and the protection for the separately arranged cables can be improved. A clamping assembly 7 is arranged in the wire-locking channel 3101;

[0039] The clamping assembly 7 includes an elastic hoop 72. Elastic clamping feet 71 are arranged at both ends of the elastic hoop 72. A buckle foot 73 is arranged at one end of the elastic clamping foot 71. The buckle foot 73 is connected to the edge of the pressure-receiving part 31 through a silicone connecting part 314. It should be noted that because the clamping assembly 7 is in two states at the cable installation position. In the first state, when the cable is not installed, the elastic hoop 72 is in the inner cavity of the wire-locking channel 3101 and does not contact the inner wall of the wire-locking channel 3101. At this time, the entire clamping assembly 7 needs to be restricted in this state. Therefore, it is equivalent to a connecting piece, and the edge or surface can be used. Because the elastic hoop 72 needs to contact the inner wall of the wire-locking channel 3101 when clamping the wire, the silicone connecting part 314 is required to provide a deformation distance, and together with the action of the elastic hoop 72, a state of wrapping the cable is formed.

[0040] Specifically, the clamping assembly is described as follows. When installing the separated cable, the elastic clamp 72 is located in the middle of the inner cavity of the cable locking channel 3101. Through the restoring performance of multiple elastic clamps 72, the two sides of the cable locking channel 3101 can be propped up, leaving a larger cable clamping space. When the separated cable is clamped in, the elastic clamp 72 is squeezed inward to form a state of wrapping the separated cable, and the elastic feet 71 are in contact with the wrapping edge of the cable locking channel 3101. Through the squeezing force between the edge of the cable locking channel 3101 and the buckle feet 73, multiple elastic clamps 72 can be in a state of holding the separated cable, and then the separated cable can be clamped tightly in the cable locking channel 3101. To ensure that the separated cable remains stable in the cable locking channel 3101 and is effectively protected by the armored part 3, the stressed part 31 includes multiple flexible connection parts 33 and module supports 32. The flexible connection parts 33 and the module supports 32 are alternately connected into a whole. The flexible connection parts 33 and the module supports 32 are respectively provided with a first connection port 35 and a second connection port 34 at the edge of the cable locking channel 3101. A steel wire rope 37 passes through the first connection port 35 and the second connection port 34. A chamfer strip 36 is sleeved in the second connection port 34. A steel wire rope 37 through groove is reserved between the chamfer strip 36 and the inner wall of the second connection port 34. Through the action of the steel wire rope 37, the steel wire ropes 37 on both sides of the separated cable can be kept straight. In this way, the chamfer strips 36 on both sides can displace towards the elastic clamp 72. And the chamfer strip 36 is made of a hard material, so that the buckle feet 73 on the elastic clamp 72 can be tightened, and then the separated cable can be effectively protected. It should be noted here that the flexible connection parts 33 and the module supports 32 can ensure that the cable deforms when axially pulled, and can be extended through the elasticity of the flexible connection parts 33 to avoid overall damage caused by excessive pulling force. And when pulling, the module support 32 deforms, so that the module support 32 axially tightens, and the separated cable can be clamped more firmly. Moreover, the flexible connection part 33 can play a buffering role, improving the resilience of the cable. Under the action of the pulling force, the steel wire rope 37 can further protect the separated cable.

[0041] In addition, in this embodiment, the support part includes a metal arched part 310, and the metal arched part 310 is attached to the inner wall of the compression cavity 38. Expansion feet 312 are provided on both sides of the metal arched part 310. The expansion feet 312 and the metal arched part 310 form a through ring 311. The reset pull rope 39 strings together multiple through rings 311 axially. A limit contact foot 313 is provided at the bottom end of the expansion foot 312, and an insertion gap is reserved between the limit contact foot 313 and the inner wall of the compression cavity 38 near the axis.

[0042] To ensure the strength of the overall cable, a deformable compression inner cavity 38 is provided between the separated cables. One of the purposes is to provide a deformation space during wire clamping. Second, it can quickly recover after wire clamping through the compression inner cavity 38. In addition, when the cable is subjected to external radial pressure, the metal arched part 310 can provide an outward force and can also support the module support 32 at the compression inner cavity 38. When the module support 32 at the compression inner cavity 38 is deformed, the metal arched part 310 disperses the force towards the expansion foot piece 312, and when the limit contact foot 313 on the expansion foot piece 312 touches during the approaching process, the extrusion upper limit is reached. After the limit contact foot 313 touches, the support part can achieve the purpose of jacking up the module support 32, thereby preventing the overall damage, deformation, and breakage problems from occurring.

[0043] To ensure that the support part can quickly recover when damaged and self-repair the cable, a positioning seat 24 is further provided on the outer side of the inner sleeve 21 and located inside the compression inner cavity 38. The positioning seat 24 includes a π-shaped seat 241, and deviation-correcting convex blocks 242 are provided at both ends of the π-shaped seat 241. When the limit contact foot 313 touches, the limit contact foot 313 moves towards the space of the π-shaped seat 241, and then the deviation-correcting convex blocks 242 on the π-shaped seat 241 are inserted into the insertion gap. In this way, the cable can form a support state radially and be divided into a triangular state, which helps to improve the overall stability and compressive performance. Moreover, the π-shaped seat 241 can recover when the pressure is removed, can correct the deviation of the support part, and assist in its recovery.

[0044] Embodiment 3

[0045] Based on Embodiment 1, the distinguishing technical feature of this embodiment is that the separated cables are arranged in the wire-locking channel 3101 and clamped by the clamping assembly 7. The separated cables include a branch wire 5 and an outer protective sleeve 4 wrapped around the branch wire 5;

[0046] The outer protective sleeve 4 includes an inner steel wire mesh sleeve 41 and a positioning ring 43. The surface of the inner steel wire mesh sleeve 41 is provided with an outer rubber sleeve 42. The positioning ring 43 is sleeved on the branch wire 5. Multiple groups of diamond-shaped protective sleeves 44 are fixedly connected to the surface of the multiple positioning rings 43 at equal intervals. The diamond-shaped protective sleeves 44 on the axially adjacent two positioning rings 43 are arranged in a staggered manner. The diamond-shaped protective sleeve 44 is provided with a fixed edge 45, and the fixed edge 45 is fixed to the inner steel wire mesh sleeve 41. An axially extending diamond-shaped cavity 46 is reserved at the staggered position of the axially adjacent two diamond-shaped protective sleeves 44, and a diamond-shaped reset strip 47 penetrates through the diamond-shaped cavity 46.

[0047] After the branch cable is separated from the main cable and routed separately, when the branch cable is under pressure, the two rhombus-shaped protective sleeves 44 can play a buffering role. Moreover, in the main cable, it can be compressed, facilitating clamping in the wire locking channel 3101, and can improve the compressive resistance of the armored cable, enhance the overall toughness and service life, and can quickly achieve the purpose of restoration.

[0048] In one embodiment, the central armored part is sleeved at the axial position of the armored part 3. It includes a central main line 6, and a central sleeve 2 is sleeved on the central main line 6. The central sleeve 2 is a hexagonal prism, and three faces of the central sleeve 2 are connected to the outer wall of the wire locking channel 3101 as a whole, and positioning seats 24 for resetting the support part are provided on the other three faces. The central sleeve 2 includes an inner sleeve 21, an isolation cavity 22 is provided inside the inner sleeve 21, and silica gel connection blocks 23 are provided at both ends of the inner sleeve 21.

[0049] The central armored part can be deformed axially to buffer and protect the overall cable from damage during pulling, and can also protect the central main line 6 when under pressure.

[0050] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept of the present invention through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims

1. An armored cable, characterized in that, Including: A cable outer sheath, on the inner wall of which arc-shaped connecting parts and pressing parts located between two said arc-shaped connecting parts are arranged at equal intervals; An armored part, which is arranged in the inner cavity of the cable outer sheath, and the armored part includes a stressed part attached to the inner wall of the arc-shaped connecting part, and a wire-locking channel located between the stressed parts and forming an inner arc state towards the axial position. A support part is arranged in the compression inner cavity of the stressed part, and a clamping component is arranged in the wire-locking channel; Separate cables, which are arranged in the wire-locking channel and clamped by the clamping component. The separate cables include branch wiring and an outer protective sheath wrapped around the branch wiring; A central armored part, which is sleeved at the axial position of the armored part. It includes a central main line, and a central sleeve is sleeved on the central main line. The central sleeve is a hexagonal prism, and three faces of the central sleeve are connected to the outer wall of the wire-locking channel as a whole, and positioning seats for resetting the support part are arranged on the other three faces; The stressed part includes a plurality of flexible connecting parts and module support parts, and the flexible connecting parts and the module support parts are alternately connected into a whole. The flexible connecting parts and the module support parts are respectively provided with a first connection port and a second connection port at the edge position of the wire-locking channel. A steel wire rope passes through the first connection port and the second connection port. A chamfered strip is sleeved in the second connection port, and a steel wire rope through groove is reserved between the chamfered strip and the inner wall of the second connection port; The clamping component includes an elastic hoop, and elastic clamping feet are arranged at both ends of the elastic hoop. A buckling foot is arranged at one end of the elastic clamping foot, and the buckling foot is connected to the edge of the stressed part through a silicone connecting part; The support part includes a metal arched part, and the metal arched part is attached to the inner wall of the compression inner cavity. Expansion foot pieces are arranged on both sides of the metal arched part, and the expansion foot pieces and the metal arched part form a through ring. A plurality of axially arranged through rings are connected in series by a reset pull rope. A limiting contact foot is arranged at the bottom end of the expansion foot piece, and an insertion gap is reserved between the limiting contact foot close to the axis and the inner wall of the compression inner cavity; 2. A armored cable according to claim 1, characterized in that: The cable outer sheath includes a cable outer skin, arc-shaped connecting parts arranged at equal intervals in the cable outer skin. The two arc-shaped connecting parts are fixedly connected by a festering connecting strip, and the pressing part is arranged inside the festering connecting strip; 3. A armored cable according to claim 1, characterized in that: The central sleeve includes an inner sleeve, an isolation cavity is arranged in the inner sleeve, and silicone connecting blocks are arranged at both ends of the inner sleeve; 4. A armored cable according to claim 3, characterized in that: The positioning seat is arranged outside the inner sleeve in the compression inner cavity. The positioning seat includes a π-shaped seat, and deviation-correcting convex blocks are arranged at both ends of the π-shaped seat; 5. A armored cable according to claim 1, wherein: The outer protective sheath includes an inner steel wire mesh sleeve and a positioning ring. An outer rubber sleeve is arranged on the surface of the inner steel wire mesh sleeve, and the positioning ring is sleeved on the branch wiring.

6. A armored cable according to claim 5, characterized in that: The surfaces of multiple said positioning rings are fixedly connected with multiple groups of rhombic protective sleeves at equal distances. The rhombic protective sleeves on two axially adjacent said positioning rings are arranged in a staggered manner. The rhombic protective sleeve is provided with a fixed edge, and the fixed edge is fixed to the built-in steel wire mesh sheath. An axially extending rhombic cavity is reserved at the staggered position of two axially adjacent said rhombic protective sleeves, and a rhombic reset strip penetrates through the rhombic cavity.

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