Tension structure of cylindrical internal unit and cylindrical internal unit

Abstract

To provide a tension structure for a cylinder internal unit and a cylinder internal unit.SOLUTION: A tension structure includes a first tension structure and a second tension structure. The first tension structure is installed at an end of an internal unit cylinder, and includes a plurality of first tension modules installed at the end of the internal unit cylinder through a base. The plurality of first tension modules are installed at intervals along a circumferential direction of the base. The second tension structure is installed on a side wall of the internal unit cylinder. The second tension structure includes a plurality of second tension modules installed on the side wall of the internal unit cylinder, and the plurality of second tension modules are installed at intervals along a circumferential direction of the internal unit cylinder.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to the field of undersea communication technology, and in particular to a tension structure for a cylindrical inner unit and a cylindrical inner unit. [Background technology]

[0002] The fields of underwater communications and underwater surveillance have developed rapidly in recent years, and underwater communications and surveillance have always used underwater products to achieve communication or surveillance operations. Underwater products typically consist of an inner unit and an outer pressure tube, with a tensioning structure installed on the inner unit to support the inner unit inside the outer pressure tube. After the inner unit is inserted into the outer pressure tube, the gap between the inner unit and the pressure tube needs to be adjusted, and the tensioning structure can be used to ensure that the inner unit is evenly supported inside the pressure tube.

[0003] Underwater products usually have a thick-walled tubular structure to ensure mechanical strength and corrosion resistance, and the tension structure is particularly important as the connection between the inner unit consisting of the inner core member of the underwater equipment and the outer pressure-resistant cylinder.

[0004] In order to meet the tension requirements, conventional tension structures must be installed symmetrically on both ends of the internal unit. If the force on one side is uneven during the tensioning process, it is likely to cause the screw to seize, which will affect the tensioning effect. In addition, conventional tension structures are difficult to install and remove, which will affect work efficiency. Summary of the Invention [Problem to be solved by the invention]

[0005] The present application provides a tension structure for a cylindrical internal unit and a cylindrical internal unit to solve the technical problems that when the force bearing of the conventional tension structure is uneven, it affects the tension effect, makes it difficult to attach and detach, and reduces work efficiency. [Means for solving the problem]

[0006] The tension structure of a cylindrical internal unit according to a first aspect of the present application includes a first tension structure installed at the end of the internal unit cylindrical body and a second tension structure installed on the side wall of the internal unit cylindrical body, wherein the first tension structure includes a plurality of first tension modules installed at the end of the internal unit cylindrical body by a base, the central axis of the base overlaps with the central axis of the internal unit cylindrical body, and the plurality of first tension modules are installed at intervals along the circumferential direction of the base, and the second tension structure includes a plurality of second tension modules installed on the side wall of the internal unit cylindrical body, and the plurality of second tension modules are installed at intervals along the circumferential direction of the internal unit cylindrical body.

[0007] In some feasible implementations, the first tension module includes a pressure block attached to the base with a cap screw and a slider attached to the side wall of the pressure block away from the central axis of the internal unit cylinder, the pressure block is arranged to move in a direction toward the base due to an external force tightening the cap screw, the slider is arranged to follow the pressure block and generate a displacement in a direction away from the central axis of the base, the pressure block includes a first inclined surface, the first inclined surface is a contact surface between the pressure block and the slider and is inclined toward the slider.

[0008] In some possible implementations, a first slide rail is mounted on the base, and the slider is slidably mounted on the first slide rail.

[0009] In some possible implementations, the first tension structure further includes a first anti-loosening member, a first stepped hole is installed in the slider, the longitudinal direction of the first stepped hole is the same as the sliding direction of the slider, and the first anti-loosening member has one end installed on the base and the other end located within the first stepped hole.

[0010] In some possible implementations, the side of the slider facing away from the pressure block is an arcuate surface, and the circles on which the arcuate surfaces of the sliders lie overlap.

[0011] In some possible implementations, the first stepped hole includes a first through hole and a second through hole, both of which are elongated holes, and the width of the first through hole is smaller than the width of the second through hole, the first locking member is a bolt, the shaft portion of the first locking member is located within the base and the first through hole, the head portion of the first locking member is located within the second through hole, and the diameter of the head portion of the first locking member is larger than the diameter of the shaft portion of the first locking member.

[0012] In some possible implementations, the number of the first stepped holes is two, and the two first stepped holes are symmetrically installed on both sides of the first slide rail.

[0013] In some possible implementations, the number of the pressing blocks is two, and the two pressing blocks are symmetrically installed on both sides of the first slide rail.

[0014] In some possible implementations, the number of the first tension structures is one or two, and when the number of the first tension structures is two, the two first tension structures are installed symmetrically at both ends of the internal unit cylinder.

[0015] In some possible implementations, the second tension module includes: an attachment bar installed on the side wall of the internal unit cylinder and having the same extension direction and length as the internal unit cylinder; a tension bar installed on the attachment bar by a second anti-loosening member and having the same extension direction as the attachment bar; and a pulling member installed on the base, wherein the tension bar has a second stepped hole, one end of the second anti-loosening member is connected to the internal unit cylinder and the other end is engaged in the second stepped hole, and the pulling member is configured to drive the tension bar to move in a direction away from the attachment bar under the action of an external force.

[0016] In some possible implementations, the tension structure further includes a mounting hole, the mounting hole is opened at the end of the inner unit cylinder, the pulling member is drilled into the mounting hole, and one end of the pulling member is installed on the tension bar, a support block is installed on the mounting bar, and the support block is located between the mounting bar and the tension bar, a second inclined surface is installed on the side wall of the tension bar facing the mounting bar, the second inclined surface is inclined toward the pulling member, and a third inclined surface is installed on the support block, the second inclined surface and the third inclined surface are attached to each other, and the inclination angle and inclination direction of the second inclined surface and the third inclined surface are the same.

[0017] In some possible implementations, the tension bar further includes a straight surface portion and a groove portion connected together, and an end of the straight surface portion away from the groove portion is The support block is connected to the second inclined surface, and the groove portion is installed between the second inclined surface and the pull member, the support block includes a protruding end, the protruding end extends along the straight surface portion toward the groove portion, and the projection of the protruding end in the direction of the pull member is located within the groove portion.

[0018] In some possible implementations, the mounting hole is opened in the wall surface of the end of the internal unit cylinder, and the extension direction of the mounting hole is the same as the extension direction of the tension bar, the pulling member is a pulling bolt, and the hole diameter of the mounting hole is larger than the outer diameter of the pulling member.

[0019] In some possible implementations, the mounting hole is opened in the base, the extension direction of the mounting hole is the same as the extension direction of the tension bar, the pulling member is a pulling bolt, and the hole diameter of the mounting hole is larger than the outer diameter of the pulling member.

[0020] In some possible implementations, the mounting hole is an elongated hole, and the longitudinal direction of the mounting hole is the same as the height direction of the second stepped hole.

[0021] In some possible implementations, the pulling member includes a cam and a rotating shaft, the cam is installed on the mounting bar and is located between the mounting bar and the tension bar, the rotating shaft has one end installed on the cam and the other end installed on the base, and the central axis of the rotating shaft is parallel to the central axis of the internal unit cylinder, the mounting bar has a mounting groove extending along the circumferential direction, and the cam is located in the mounting groove.

[0022] In some possible implementations, the pulling member is a tie rod and a link rod, the tie rod is installed on the base, the link rod is rotatably connected between the tie rod and the tension bar, a second slide rail is installed on the base, the extension direction of the second slide rail is the same as the extension direction of the mounting bar, and the tie rod is installed on the second slide rail.

[0023] In some possible implementations, the ends of the mounting bar are connected to the base.

[0024] In some feasible implementations, the second stepped hole includes a third through hole and a fourth through hole, the third through hole and the fourth through hole are both elongated holes, and the width of the third through hole is smaller than the width of the fourth through hole, the second locking member is a bolt, the shaft portion of the second locking member is located within the internal unit cylinder and the third through hole, the head of the second locking member is located within the fourth through hole, and the diameter of the head of the second locking member is larger than the diameter of the shaft portion of the second locking member.

[0025] A cylindrical internal unit according to a second aspect of the present application includes an internal unit cylindrical body, a first tension structure installed at the end of the internal unit cylindrical body, and a second tension structure installed on the side wall of the internal unit cylindrical body, wherein the first tension structure includes a plurality of first tension modules installed at the end of the internal unit cylindrical body by a base, the central axis of the base overlaps with the central axis of the internal unit cylindrical body, and the plurality of first tension modules are installed at intervals along the circumferential direction of the base, and the second tension structure includes a plurality of second tension modules installed on the side wall of the internal unit cylindrical body, and the plurality of second tension modules are installed at intervals along the circumferential direction of the internal unit cylindrical body. [Effects of the Invention]

[0026] In the tensioning structure for a cylindrical internal unit and the cylindrical internal unit according to the present application, the tensioning structure includes a first tensioning structure and a second tensioning structure, the first tensioning structure is installed at the end of the cylindrical internal unit and includes a plurality of first tensioning modules installed at the end of the cylindrical internal unit by a base, the central axis of the base overlaps with the central axis of the cylindrical internal unit, the plurality of first tensioning modules are installed at intervals along the circumferential direction of the base, the second tensioning structure is installed on the side wall of the cylindrical internal unit, and the second tensioning structure includes a plurality of second tensioning modules installed on the side wall of the cylindrical internal unit, the plurality of second tensioning modules are installed at intervals along the circumferential direction of the cylindrical internal unit. The tensioning structure according to the present application can achieve the required strength for tensioning through cooperation between the first tensioning structure and the second tensioning structure, can achieve uniform tension during the tensioning process, is less likely to cause thread galling, is easy to install and remove, is simple to operate, and effectively improves work efficiency. [Brief explanation of the drawings]

[0027] In order to more clearly explain the technical solutions of the present application, the following briefly introduces the drawings that need to be used in the embodiments, and obviously, those skilled in the art can further derive other drawings based on these drawings without any creative efforts. [Figure 1] 1 is a structural schematic diagram of a tension structure of a cylindrical internal unit according to an embodiment of the present application. [Figure 2] 1 is a structural schematic diagram of a first tension structure according to an embodiment of the present application. [Figure 3] FIG. 2 is a cross-sectional view of a first tension module according to an embodiment of the present application. [Figure 4] FIG. 2 is a cross-sectional view of a first stepped hole according to an embodiment of the present application. [Figure 5] FIG. 2 is a structural schematic diagram of a second tension structure according to an embodiment of the present application. [Figure 6] FIG. 2 is a cross-sectional view of a second tension structure according to an embodiment of the present application. [Figure 7] FIG. 7 is a partial enlarged view of a portion D in FIG. 6. [Figure 8] 1 is a schematic diagram illustrating a first rotation state of a cam and a rotation shaft according to an embodiment of the present application. FIG. [Figure 9] FIG. 10 is a schematic diagram illustrating a second rotation state of the cam and the rotary shaft according to the embodiment of the present application. [Figure 10] 1 is a structural schematic diagram of a tie rod and a link rod according to an embodiment of the present application. [Figure 11] FIG. 4 is a cross-sectional view of a second stepped hole according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0028] The technical solutions in the embodiments of the present application will be clearly explained below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Any other embodiments obtained by those skilled in the art based on the embodiments of the present application without any creative effort fall within the scope of protection of the present application.

[0029] Hereinafter, the terms "first," "second," etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or the number of the designated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of the said features. In the description of this application, unless otherwise specified, "plurality" means two or more than two.

[0030] Furthermore, in this application, directional terms such as "upper," "lower," "inner," and "outer" are defined relative to the orientation in which components in the drawings are generally placed, and these directional terms are relative concepts and are used for relative explanation and clarification, and may change depending on the change in the orientation in which components in the drawings are placed.

[0031] The field of underwater communication and underwater surveillance has developed rapidly in recent years, and underwater communication and underwater surveillance have always been underwater. The product is used to realize communication or monitoring operations.

[0032] Underwater products typically consist of an inner unit and an outer pressure tube, with a tensioning structure installed on the inner unit to support the inner unit inside the outer pressure tube. After the inner unit is inside the outer pressure tube, the gap between the inner unit and the pressure tube needs to be adjusted, and the tensioning structure can be used to ensure that the inner unit is evenly supported inside the pressure tube.

[0033] Underwater products usually have a thick-walled tubular structure to ensure mechanical strength and corrosion resistance, and the tension structure is particularly important as the connection between the inner unit consisting of the inner core member of the underwater equipment and the outer pressure-resistant cylinder.

[0034] In order to meet the tension requirements, conventional tension structures must be installed symmetrically on both ends of the internal unit. If the force on one side is uneven during the tensioning process, it is likely to cause the screw to seize, which will affect the tensioning effect. In addition, conventional tension structures are difficult to install and remove, which will affect work efficiency.

[0035] To solve the above technical problems, the embodiment of the present application provides a tensioning structure for the cylinder inner unit, which can achieve uniform tension between the end and side wall of the cylinder inner unit during the tensioning process, and is easy to install and remove, simple to operate, and effectively improves work efficiency.

[0036] FIG. 1 is a structural schematic diagram of a tension structure of a cylindrical internal unit according to an embodiment of the present application.

[0037] FIG. 2 is a structural schematic diagram of a first tension structure according to an embodiment of the present application.

[0038] FIG. 3 is a cross-sectional view of a first tension module according to an embodiment of the present application.

[0039] Referring to FIGS. 1, 2 and 3, the tension structure of the cylindrical inner unit includes a first tension structure 10 and a second tension structure 20.

[0040] The first tension structure 10 is installed at the end of the inner unit cylinder 200, and the first tension structure 10 is used to tension the end of the inner unit cylinder 200.

[0041] Specifically, the first tension structure 10 includes a plurality of first tension modules 11 installed at the end of the internal unit cylindrical body 200 by a base 12. Here, the base 12 may be fixedly attached to the end of the internal unit cylindrical body 200 with bolts. The central axis of the base 12 overlaps with the central axis of the internal unit cylindrical body 200, and the plurality of first tension modules 11 are installed at intervals along the circumferential direction of the base 12.

[0042] In this way, the base 12 provides a mounting base for the multiple first tension modules 11, and the multiple first tension modules 11 can achieve uniform tension at the ends of the inner unit cylinder 200.

[0043] Continuing to refer to FIG. 2, the first tension module 11 includes a pressing block 111 and a slider 113.

[0044] Specifically, the pressing block 111 is attached to the base 12 by a cap screw 112. The pressing block 111 may be a block-shaped structure with an inclined surface, and the cap screw 112 may be attached to the middle position of the pressing block 111. Tighten the cap screw 112. During the attachment process, the pressing block 111 moves toward the base 12 together with the cap screw 112, gradually reducing the distance between the bottom surface of the pressing block 111 and the top surface of the base 12. Here, the pressing block 111 includes two side walls, one of which approaches the central axis of the internal unit cylindrical body 200 and the other of which moves away from the central axis of the internal unit cylindrical body 200. The pressing block 111 includes a first inclined surface 111a, which is the contact surface between the pressing block 111 and the slider 113, and which is the side wall that moves away from the central axis of the internal unit cylindrical body 200.

[0045] That is, during the installation process, the cap screw 112 can be first installed in the pressing block 111, and then installed in the base 12. In this way, during the process in which the cap screw 112 is gradually locked inside the base 12, the pressing block 111 moves together with the cap screw 112, and the distance between the pressing block 111 and the base 12 can be gradually reduced.

[0046] It should be emphasized that the number of first tension modules 11 shown in FIG. 2 is three, and the three first tension modules 11 are uniformly distributed in the circumferential direction of the base 12. However, the number of first tension modules 11 may be three, which is merely an example and does not limit the number of first tension modules 11. In other specific implementations, the number of first tension modules 11 may be two, four, five, or even more. The number of first tension modules 11 can be adaptively adjusted according to the actual shape and dimensions of the internal unit cylinder 200, and is not specifically limited here.

[0047] Continuing to refer to Figures 2 and 3, the slider 113 may have a valve-like structure, one side of which is a flat structure and the other side of which is a curved structure, and the flat structure side is attached to the side wall of the pressing block 111 that is away from the central axis of the internal unit cylinder 200, and the curved structure side is away from the pressing block 111.

[0048] Here, the planar structure of the slider 113 may be an inclined planar structure. In this manner, the first inclined surface 111a of the pressing block 111 is bonded to the inclined planar structure of the slider 113, and the inclination angle and inclination direction of the two are the same. In this manner, when the pressing block 111 is driven by the cap screw 112 to move downward, the pressing block 111 can push the slider 113 via the first inclined surface 111a, moving it in a direction away from the central axis of the base 12.

[0049] Specifically, a first slide rail 121 is installed on the base 12, and during the sliding process, the slider 113 moves along the first slide rail 121 in a direction away from the central axis of the base 12. Here, the central axis of the first slide rail 121 may overlap with the radius of the base 12, and the first slide rail 121 extends in a direction away from the central axis of the base 12.

[0050] In one specific implementation, the side of the slider 113 away from the pressing block 111 is an arcuate surface, and the circles on which the arcuate surfaces of the multiple sliders 113 are located overlap. In this way, when the pressing block 111 pushes and moves the sliders 113, the multiple sliders 113 move synchronously in the direction away from the central axis of the base 12. The sliding distance of the sliders 113 can be adjusted by the distance the cap screw 112 pushes the pressing block 111. Furthermore, the sliding distance of the sliders 113 controls the increase in the radius of the circle on which the arcuate surface is located, so as to reach the dimension required for the tension at the end. Naturally, in this implementation, the slider 113 with an arcuate surface is applied to the internal unit cylinder 200 with a circular cross-section. In other implementations, the shape of the slider 113 may be adjusted by the actual internal unit. It can be adjusted according to the shape of the cylinder 200. For example, if the shape of the internal unit cylinder 200 is a cube, the side of the slider 113 away from the pressing block is a flat surface, and the flat surfaces of the multiple sliders 113 can form a cubic structure.

[0051] FIG. 4 is a cross-sectional view of a first stepped hole according to an embodiment of the present invention.

[0052] Continuing to refer to Figures 3 and 4, the first tension structure 10 further includes a first anti-loosening member 13, a first stepped hole 113a is opened in the slider 113, the first anti-loosening member 13 is installed in the first stepped hole 113a, the central axis of the first stepped hole 113a is parallel to the central axis of the base 12, and the longitudinal direction of the first stepped hole 113a is the same as the sliding direction of the slider 113 and the extension direction of the first slide rail 121.

[0053] Here, the first stepped hole 113a includes a first through hole a1 and a second through hole a2, the first through hole a1 is located close to the base 12, the first through hole a1 and the second through hole a2 may both be elongated holes, and the width of the first through hole a1 is smaller than the width of the second through hole a2.

[0054] Taking one first tension module 11 shown in Figure 2 as an example, the slider 113 can be pushed by the pressing block 111 to move in the A direction, the first slide rail 121 extends along the A direction, and the longitudinal direction of the first stepped hole 113a is the A direction.

[0055] In one specific implementation, the first locking member 13 may be a bolt, and the first locking member 13 may have a shaft portion at one end and a head portion at the other end, so that the shaft portion of the first locking member 13 can be positioned within the base 12 and the first through-hole a1, and the head portion of the first locking member 13 can be positioned within the second through-hole a2.

[0056] In one specific implementation, the number of first stepped holes 113a and pressing blocks 111 are both two, the two first stepped holes 113a are installed symmetrically on both sides of the first slide rail 121, and the two pressing blocks 111 are installed symmetrically on both sides of the first slide rail 121, and the two pressing blocks 111 can be located outside the two first stepped holes 113a. Here, the slider 113 may further include two notch structures, which are installed corresponding to the pressing blocks 111. As long as the structural strength of the slider 113 is met, the installation of the notch structures can effectively reduce the overall weight of the first tensioning structure 10.

[0057] Here, the number of first tensioning structures 10 may be one or two. When one first tensioning structure 10 is installed, the one first tensioning structure 10 is installed on the left or right side of the internal unit cylindrical body 200, thereby realizing tension at one end of the internal unit cylindrical body 200. When two first tensioning structures 10 are installed, the two first tensioning structures 10 are installed symmetrically on both sides of the internal unit cylindrical body 200, thereby realizing tension at both ends of the internal unit cylindrical body 200.

[0058] The operation process of the first tension structure 10 will be explained below.

[0059] During the process of tightening the cap screw 112, the cap screw 112 can drive the pressing block 111 to move toward the top surface of the base 12, and the distance between the pressing block 111 and the top surface of the base 12 gradually decreases. During this process, the first inclined surface 111a of the pressing block 111 can push the slider 113, causing the slider 113 to move in the direction away from the central axis of the base 12 on the first slide rail 121. As the slider 113 moves, the first locking member 13 positioned in the first stepped hole 113a limits the maximum sliding displacement of the slider 113. As the slider 113 slides, the first stepped hole 113a is driven by the slider 113 to move relative to the first locking member 13, gradually increasing the distance between the first locking member 13 and the end of the first stepped hole 113a that is far from the pressing block 111, and gradually decreasing the distance between the first locking member 13 and the end of the first stepped hole 113a that is closer to the pressing block 111. When the slider 113 moves to the maximum displacement position, the first locking member 13 abuts against the wall surface of the first stepped hole 113a that is closer to the pressing block 111, thus limiting further movement of the slider 113 and preventing the slider 113 from coming off. The multiple first tension modules 11 operate simultaneously, which allows the multiple sliders 113 to apply uniform outward tension in the circumferential direction of the base 12, ensuring the tension effect and uniformity of the tension.

[0060] The first tensioning structure 10 according to the present embodiment can be installed in a narrow space and can be used with various shapes of the internal unit cylindrical body 200, which can be regular, such as circular or polygonal, or irregular, such as atypical. The height of the pressing block 111 can be controlled by the cap screw 112 to control the sliding of the slider 113 along the first slide rail 121. During tensioning, the heights of the multiple pressing blocks 111 can be adjusted to match each other. The cap screw 112 presses the sliders 113 downward, ensuring that each slider 113 slides the same distance outward, achieving uniform tension and satisfying support and fastening requirements. When the first tensioning module 11 needs to be removed, the slider 113 can be removed from the narrow space simply by removing the cap screw 112 and the first locking member 13. This facilitates installation and removal, simplifies operation, and effectively improves work efficiency.

[0061] FIG. 5 is a structural schematic diagram of a second tension structure according to an embodiment of the present application.

[0062] FIG. 6 is a cross-sectional view of a second tension structure according to an embodiment of the present invention.

[0063] FIG. 7 is a partial enlarged view of a portion D in FIG.

[0064] 1, 5, 6 and 7, the second tension structure 20 includes a plurality of second tension modules 21, which are installed on the side walls of the inner unit cylinder 200 and spaced apart along the circumferential direction of the inner unit cylinder 200. The plurality of second tension modules 21 are used to tension the side walls of the inner unit cylinder 200.

[0065] The second tension module 21 includes a mounting bar 211, a tension bar 212, a pull member, and a second locking member 214. The mounting bar 211 may be fixed to the side wall of the inner unit cylinder 200 with a screw, and the extending direction and length of the mounting bar 211 may be the same as those of the inner unit cylinder 200. Here, the mounting bar 211 may have a groove in the middle, and a support block 215 is installed inside the groove. The tension bar 212 may be attached to the mounting bar 211 by a second anti-loosening member 214, and the extension direction of the tension bar 212 is the same as that of the mounting bar 211. Here, a second stepped hole 212a is opened in the tension bar 212, and one end of the second anti-loosening member 214 is connected to the internal unit cylinder and the other end is engaged in the second stepped hole 212a. The second anti-loosening member 214 may have one end fixedly connected to the wall surface of the internal unit cylinder 200 and the other end engaged in the second stepped hole 212a, so that the second anti-loosening member 214 prevents the tension bar 212 from coming off.

[0066] Specifically, the extension direction of the tension bar 212 is the same as the extension direction of the attachment bar 211, and the central axes of the attachment bar 211, tension bar 212 and inner unit cylinder body 200 are in the same plane.

[0067] The pulling member is installed on the base 12, and when subjected to an external force, can drive the tension bar 212 to move in a direction away from the mounting bar 211. This achieves tension on the side wall of the inner unit cylinder 200.

[0068] In one specific implementation, the tension structure of the cylindrical inner unit further includes a mounting hole 30, which is opened at the end of the inner unit cylindrical body 200. A tension member is drilled into the mounting hole 30, and one end of the tension member is attached to the tension bar 212. Here, the tension member may be a tension bolt 213a. One end of the tension bar 212 may be attached to the mounting bar 211 via the tension bolt 213a. The tension bolt 213a may be drilled into the mounting hole 30, with one end connected to the tension bar 212 and the other end locked outside the mounting hole 30 away from the tension bar 212. The tension bolt 213a is locked within the tension bar 212 under the action of an external force, and the tension bar 212 can move away from the mounting bar 211 while the tension bolt 213a is locked, thereby realizing tensioning of the side wall of the inner unit cylindrical body 200.

[0069] Specifically, a support block 215 is installed on the mounting bar 211, and the support block 215 is located between the mounting bar 211 and the tension bar 212. A second inclined surface 212b is installed on the side wall of the tension bar 212 facing the mounting bar 211, and the second inclined surface 212b is inclined toward the tension bolt 213a. A third inclined surface 215a having the same inclination angle and inclination direction as the second inclined surface 212b is installed on the support block 215. The second inclined surface 212b and the third inclined surface 215a are contact surfaces between the tension bar 212 and the support block 215, respectively.

[0070] In this manner, when the bonded second inclined surface 212b and third inclined surface 215a are installed and the tension bolt 213a locks the tension bar 212 and moves the tension bar 212 in a direction away from the mounting bar 211, the tension bar 212 slides along the third inclined surface 215a, and displacements can be generated in directions B and C shown in Fig. 6. Here, direction B may be the axial direction of the internal unit cylindrical body 200, and direction C may be the radial direction of the internal unit cylindrical body 200.

[0071] The tension bar 212 further includes a straight surface portion 212c and a groove portion 212d connected together, and the end of the straight surface portion 212c away from the groove portion 212d is connected to the second inclined surface 212b. That is, the straight surface portion 212c is disposed between the second inclined surface 212b and the groove portion 212d, and the groove portion 212d is located between the straight surface portion 212c and the tension bolt 213a.

[0072] The support block 215 includes a protruding end 215b, which has a third inclined surface 215a extending along the straight surface portion 212c toward the groove portion 212d, and the projection of the protruding end 215b toward the tension bolt 213a is located within the groove portion 212d. Thus, after the tensioning operation is completed, the locking force between the tension bolt 213a and the tension bar 212 is reduced under the action of an external force, and the tension bar 212 can slide along the third inclined surface 215a in the opposite direction to B and C to its initial position. In this case, the distance between the protruding end 215b and the groove portion 212d gradually decreases until the protruding end 215b is completely inserted into the groove portion 212d, thereby preventing the tension bar 212 from coming off in the direction of gravity after the tensioning operation is completed.

[0073] In this way, during the process in which the tension bolt 213a locks the tension bar 212, the tension bolt 213a and the tension bar 212 are displaced in the direction B in synchronization, thereby allowing the tension bolt 213a to move a certain distance in the direction B even within the mounting hole 30.

[0074] Here, the inner diameter of the mounting hole 30 is larger than the outer diameter of the tension bolt 213a. The mounting hole 30 may be a circular hole or an elongated hole.

[0075] Specifically, the mounting holes 30 may be opened in the wall surface of the inner unit cylindrical body 200, or may be opened in the base 12. Here, the extending direction of the mounting holes 30 is the same as the extending direction of the tension bar 212.

[0076] In one specific implementation, the mounting hole 30 may be an elongated hole, and the longitudinal direction of the mounting hole 30 is the same as the height direction of the second stepped hole 212a.

[0077] FIG. 8 is a schematic diagram of a first rotation state of a cam and a rotary shaft according to an embodiment of the present application.

[0078] FIG. 9 is a schematic diagram of a second rotation state of the cam and the rotary shaft according to the embodiment of the present application.

[0079] 8 and 9, in another specific implementation, the pulling member may be provided in the form of a cam 213b1 and a rotating shaft 213b2.

[0080] Specifically, the cam 213b1 may be installed vertically between the mounting bar 211 and the tension bar 212, with the rotation surface of the cam 213b1 contacting the mounting bar 211 and the tension bar 212. The mounting bar 211 may be provided with a mounting groove extending in the circumferential direction, with the cam 213b1 installed in the mounting groove and able to rotate relative to the mounting bar 211 and the tension bar 212 within the mounting groove.

[0081] The rotation shaft 213b2 has one end attached to the cam 213b1 and the other end attached to the base 12, and the central axis of the rotation shaft 213b2 may be parallel to the central axis of the inner unit cylinder 200.

[0082] That is, in the process of realizing tensioning operation by the second tensioning module 21, the rotation shaft 213b2 drives and rotates the cam 213b1. Due to the characteristics of the cam 213b1 itself, in the process of rotation of the cam 213b1, the tip E of the side wall of the cam 213b1, which is far from the rotation shaft 213b2, pushes up the tension bar 212, thereby moving the tension bar 212 in a direction away from the mounting bar 211, thereby realizing radial tension.

[0083] It should be noted that the other end of the rotating shaft 213b2 may be attached to the base 12 via a bearing, and of course, the rotating shaft 213b2 may be attached to the base 12 in other forms or by other members, and this is not specifically limited here.

[0084] FIG. 10 is a structural schematic diagram of a tie rod and a link rod according to an embodiment of the present invention.

[0085] Referring to FIG. 10, in yet another specific implementation, the pulling member may be provided in the form of a rotatably connected tie rod 213c1 and link rod 213c2.

[0086] Specifically, a second slide rail (not shown) is installed on the base 12. The extension direction of the slide rail is the same as the extension direction of the mounting bar 211, and a slide rail groove that fits into the second slide rail is provided on the side of the tie rod 213c1 facing the base 12, so that the tie rod 213c1 can be installed on the second slide rail of the base 12 through the slide rail groove, and the tie rod 213c1 can slide relative to the base 12. In a state of pressing the tie rod 213c1, the tie rod 213c1 presses the tension bar 212 via the link rod 213c2, generating radial displacement and thereby realizing radial tension.

[0087] 10, there are two link rods 213c2, and both ends of the two link rods 213c2 are hinge-connected to the tension bar 212 and the tie rod 213c1, respectively. Naturally, the number of link rods 213c2 is not limited to two, and in other implementations, the number of link rods 213c2 may be one, three, or even more. Furthermore, other methods for connecting the link rods 213c2 to the tension bar 212 and the tie rod 213c1 may be adopted, and no specific limitations are imposed here as long as both ends of the link rod 213c2 are rotatably connected to the tension bar 212 and the tie rod 213c1, respectively.

[0088] It should be emphasized that the number of second tension modules 21 shown in FIG. 1 is three, and the three second tension modules 21 are uniformly distributed on the side wall of the internal unit cylinder 200. However, the fact that the number of second tension modules 21 may be three is merely an example and does not limit the number of second tension modules 21. In other specific implementations, the number of second tension modules 21 may be two, four, five, or even more. The number of second tension modules 21 can be adaptively adjusted according to the shape and dimensions of the actual internal unit cylinder 200 and is not specifically limited here. Here, the number of support blocks 215 and second locking members 214 in the second tension modules 21 can be adjusted according to the axial dimension of the actual internal unit cylinder 200.

[0089] FIG. 11 is a cross-sectional view of a second stepped hole according to an embodiment of the present invention.

[0090] 11, the second stepped hole 212a includes a third through hole a3 and a fourth through hole a4, both of which may be elongated holes, and the width of the third through hole a3 is smaller than the width of the fourth through hole a4, where the third through hole a3 is closer to the mounting bar 211 and the fourth through hole a4 is farther away from the mounting bar 211.

[0091] The second anti-loosening member 214 may be a bolt, and the shaft of the second anti-loosening member 214 may be located within the internal unit cylinder 200 and the third through hole a3, and the head of the second anti-loosening member 214 may be located within the fourth through hole a4, and the diameter of the head is larger than the diameter of the shaft, which can effectively prevent the tension bar 212 from coming off the internal unit cylinder 200 in a loosened state.

[0092] In one specific implementation, the end of the mounting bar 211 may be attached to the base 12. Here, the mounting bar 211 may be located between any two adjacent sliders 113. In this way, the mounting space can be utilized efficiently. Of course, in other specific implementations, the end of the mounting bar 211 may be attached to other positions that are not connected to the base 12.

[0093] Hereinafter, the operation process of the second tension structure 20 will be described using an example in which the pulling member in the second tension structure 20 is the pulling bolt 213a.

[0094] For example, the tension member is a tension bolt 213a, and a mounting hole 30 is formed in the base 12. The tension bolt 213a passes through the mounting hole 30, and its threaded end is threaded onto the tension bar 212, with the other end anchored to the outside of the base 12. To tension the side wall of the inner unit cylinder 200, the end of the tension bolt 213a located outside the mounting hole 30 is fastened. Since the tension bar 212 is restricted by the second locking member 214 and cannot rotate, the tension bar 212 tends to move obliquely upward along the second inclined surface 212b under the action of an external force, i.e., generates displacements in directions B and C. As the tension bar 212 generates displacements in direction C, it drives the tension bolt 213a to move synchronously. In this way, the tension member generates displacements in direction C synchronously with the tension bar 212 along the longitudinal direction of the mounting hole 30. During this process, while the tension bar 212 generates displacement in direction B, the distance between the end of the tension bar 212 and the mounting hole 30 gradually decreases, while the distance between the protruding end 215b and the groove portion 212d gradually increases.

[0095] After completing the tensioning operation of the side wall of the inner unit cylinder 200, the tension bolt 213a is loosened in the opposite direction, reducing the fastening force between the tension bolt 213a and the tension bar 212. The distance between the tension bar 212 and the mounting hole 30 gradually increases, and the tension bar 212 slides along the second inclined surface 212b in the opposite direction to B and C. During this process, the distance between the protruding end 215b and the recessed groove portion 212d gradually decreases, and the protruding end 215b gradually enters the recessed groove portion 212d. Even if the tension bolt 213a comes out of the tension bar 212, the tension bar 212 will not come off in the direction of gravity.

[0096] The second tension structure 20 of the present application includes multiple second tension modules 21 uniformly distributed along the axial direction of the inner unit cylindrical body 200. During tensioning, the tension bar 212 is pulled by the tension bolts 213a. This allows the tension bar 212 to move radially and axially along the inner unit cylindrical body 200 until it is attached to the outer pressure-resistant cylinder. The installation of the second locking member 214 effectively prevents the tension bar 212 from coming loose from the inner unit cylindrical body 200. The tension bar 212 also includes a bending-back guide, which not only guides the tension bar 212 when it opens radially, but also ensures that the protruding end 215b of the support block 215 is positioned within the groove portion 212d when it contracts radially, preventing the tension bar 212 from coming loose due to gravity. When the second tension module 21 needs to be removed, the tension bar 212 can be removed simply by removing the tension bolts 213a and the second locking member 214.

[0097] Hereinafter, the operation process of the second tension mechanism 20 will be described using an example in which the pulling members in the second tension mechanism 20 are the cam 213b1 and the rotary shaft 213b2.

[0098] When tensioning the side wall of the inner unit cylindrical body 200, the rotary shaft 213b2 is rotated, and the cam 213b1 is driven to rotate by the rotary shaft 213b2. As the tip E of the cam 213b1 rotates toward the tension bar 212, the tension bar 212 is constantly pushed up, and the tension bar 212 is displaced along direction C. When the tip E of the cam 213b1 contacts the tension bar 212, the displacement of the tension bar 212 in direction C is at its maximum, and the radial tensioning operation is completed. When it is necessary to return the tension bar 212, the cam 213b1 is simply continued to rotate or rotated in the opposite direction to move the tip E away from the tension bar 212.

[0099] Hereinafter, the operation process of the second tension structure 20 will be described using an example in which the pulling members in the second tension structure 20 are the tie rod 213c1 and the link rod 213c2.

[0100] When tensioning the side wall of the inner unit cylinder 200, the tie rod 213c1 is pushed, and the tie rod 213c1 pushes the link rod 213c2, which in turn pushes the tension bar 212 to move it. As the tension bar 212 moves, the tension bar 212 is constantly pushed up by the link rod 213c2, generating displacement in the C direction. When the tie rod 213c1 reaches its limit position, the displacement of the tension bar 212 in the C direction is at its maximum, and the radial tensioning operation is completed. When the tension bar 212 needs to be returned, the tie rod 213c1 is pulled to return it to its initial position.

[0101] The tensioning structure of the present application can achieve the required strength for tensioning through cooperation between the first tensioning structure 10 and the second tensioning structure 20, can realize uniform tension during the tensioning process, is less likely to cause screw galling, is easy to attach and detach, is simple to operate, and effectively improves work efficiency.

[0102] An embodiment of the present application further provides a cylinder internal unit, including an internal unit cylinder 200 and the first tension structure 10 and second tension structure 20 according to the above embodiment. The first tension structure 10 is installed at an end of the internal unit cylinder 200, and includes a plurality of first tension modules 11 installed at the end of the internal unit cylinder 200 by a base 12, and the central axis of the base 12 overlaps with the central axis of the internal unit cylinder 200, and the plurality of first tension modules 11 are installed at intervals along the circumferential direction of the base 12. The second tension structure 20 is installed on a side wall of the internal unit cylinder 200, and includes a plurality of second tension modules 21 installed on the side wall of the internal unit cylinder 200, and the plurality of second tension modules 21 are installed at intervals along the circumferential direction of the internal unit cylinder 200.

[0103] The cylindrical internal unit of the embodiment of the present application can achieve the required tension strength through cooperation between the first tensioning structure 10 and the second tensioning structure 20 during operation, can achieve uniform tension during the tensioning process, is less likely to cause thread seizing, is easy to attach and detach, is simple to operate, and effectively improves work efficiency.

[0104] It should be noted that those skilled in the art will readily conceive of other implementations of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any modifications, uses, or adaptations of the present application, including common general knowledge or common practice in the art that is not disclosed herein in accordance with the general principles of the present application. The specification and examples are considered to be exemplary only, with the true scope of the present application being indicated by the following claims.

[0105] It should be understood that the present application is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof, which is limited only by the appended claims. [Explanation of symbols]

[0106] 10 First tension structure 11 First tension module 111 Pressing Block 111a first inclined surface 112 Cap screw 113 Slider 113a First stepped hole a1 First through hole a2 Second through hole 12 base 121 First Slide Rail 13 First locking member 20 Second tension structure 21 Second tension module 211 Mounting bar 212 tension bar 212a Second stepped hole a3 Third through hole a4 Fourth through hole 212b Second inclined surface 212c Straight surface 212d Concave groove part 213a Pull bolt 213b1 Cam 213b2 Rotation axis 213c1 tie rod 213c2 link rod 214 Second locking member 215 Support Block 215a Third Inclined Surface 215b Projecting end 30 Mounting holes 200 Internal unit cylinder

Claims

1. a first tension structure (10) installed at the end of the inner unit cylinder; a second tension structure (20) installed on the side wall of the inner unit cylinder; The first tension structure (10) includes a plurality of first tension modules (11) mounted on the end of the internal unit cylinder by a base (12), the central axis of the base (12) overlaps with the central axis of the internal unit cylinder, and the plurality of first tension modules (11) are mounted at intervals along the circumferential direction of the base (12); The second tension structure (20) includes a plurality of second tension modules (21) installed on the side walls of the inner unit cylinder, and the plurality of second tension modules (21) are installed at intervals along the circumferential direction of the inner unit cylinder; The first tension module (11) comprises: a pressure block (111) attached to the base (12) by a cap screw (112); a slider (113) attached to a side wall of the pressing block (111) on the side away from the central axis of the inner unit cylindrical body, The pressing block (111) is arranged so as to move in a direction approaching the base (12) by an external force that tightens the cap screw (112). The slider (113) is disposed so as to be displaced in a direction away from the central axis of the base (12) in response to the movement of the pressing block (111). The pressing block (111) includes a first inclined surface (111a), which is a contact surface between the pressing block (111) and the slider (113), and which is inclined toward the slider (113). A tension structure for a cylindrical internal unit.

2. A first slide rail (121) is installed on the base (12), and the slider (113) is slidably installed on the first slide rail (121). The tension structure of the cylindrical internal unit according to claim 1 .

3. The first tension structure (10) further includes a first locking member (13), A first stepped hole (113a) is provided in the slider (113), and the longitudinal direction of the first stepped hole (113a) is the same as the sliding direction of the slider (113). One end of the first locking member (13) is provided in the base (12), and the other end is located within the first stepped hole (113a). The tension structure of the cylindrical internal unit according to claim 2 .

4. The side of the slider (113) away from the pressing block (111) is an arcuate surface, and the circles on which the arcuate surfaces of the plurality of sliders (113) are located overlap each other. The tension structure of the cylindrical internal unit according to claim 3 .

5. the first stepped hole (113a) includes a first through hole (a1) and a second through hole (a2), the first through hole (a1) and the second through hole (a2) are both elongated holes, and the width of the first through hole (a1) is smaller than the width of the second through hole (a2); The first locking member (13) is a bolt, the shaft portion of the first locking member (13) is located within the base (12) and the first through hole (a1), the head portion of the first locking member (13) is located within the second through hole (a2), and the diameter of the head portion of the first locking member (13) is larger than the diameter of the shaft portion of the first locking member (13). The tension structure of the cylindrical internal unit according to claim 3 .

6. The number of the first stepped holes (113a) is two, and the two first stepped holes (113a) are symmetrically installed on both sides of the first slide rail (121). The tension structure of the cylindrical internal unit according to claim 5 .

7. The number of the pressing blocks (111) is two, and the two pressing blocks (111) are symmetrically installed on both sides of the first slide rail (121). The tension structure of the cylindrical internal unit according to claim 5 .

8. The number of the first tension structures (10) is one or two, When the number of the first tension structures (10) is two, the two first tension structures (10) are symmetrically installed on both ends of the inner unit cylinder; The tension structure of the cylindrical internal unit according to claim 1 .

9. The second tension module (21) comprises: an attachment bar (211) installed on the side wall of the inner unit cylinder, and having the same extending direction and length as the inner unit cylinder; a tension bar (212) that is attached to the mounting bar (211) by a second locking member (214) and extends in the same direction as the mounting bar (211); a pulling member mounted on the base (12), A second stepped hole (212a) is formed in the tension bar (212), and one end of the second locking member (214) is connected to the inner unit cylinder and the other end is engaged in the second stepped hole (212a), The pulling member is arranged to drive the tension bar (212) to move in a direction away from the mounting bar (211) under the action of an external force. The tension structure of the cylindrical internal unit according to claim 1 .

10. The tension structure further includes a mounting hole (30), the mounting hole (30) is opened at the end of the inner unit cylinder, the pulling member is drilled into the mounting hole (30), and one end of the pulling member is installed on the tension bar (212); A support block (215) is installed on the mounting bar (211), and the support block (215) is located between the mounting bar (211) and the tension bar (212), a second inclined surface (212b) is installed on the side wall of the tension bar (212) facing the mounting bar (211), the second inclined surface (212b) is inclined toward the direction of the pulling member, a third inclined surface (215a) is installed on the support block (215), the second inclined surface (212b) and the third inclined surface (215a) are bonded together, and the inclination angle and inclination direction of the second inclined surface (212b) and the third inclined surface (215a) are the same. The tension structure of the cylindrical internal unit according to claim 9.

11. The tension bar (212) further includes a straight surface portion (212c) and a groove portion (212d) connected to each other, and an end of the straight surface portion (212c) away from the groove portion (212d) is connected to the second inclined surface (212b), and the groove portion (212d) is disposed between the second inclined surface (212b) and the pulling member; The support block (215) includes a protruding end (215b), which extends along the straight surface portion (212c) toward the groove portion (212d), and the projection of the protruding end (215b) in the direction of the pull member is located within the groove portion (212d). The tension structure of the cylindrical internal unit according to claim 10.

12. The mounting hole (30) is opened in the wall surface of the end of the internal unit cylindrical body, and the extending direction of the mounting hole (30) is the same as the extending direction of the tension bar (212), the pulling member is a pulling bolt (213a), and the hole diameter of the mounting hole (30) is larger than the outer diameter of the pulling member. The tension structure of the cylindrical internal unit according to claim 10.

13. The mounting hole (30) is opened in the base (12), the extending direction of the mounting hole (30) is the same as the extending direction of the tension bar (212), the pulling member is a pulling bolt (213a), and the hole diameter of the mounting hole (30) is larger than the outer diameter of the pulling member. The tension structure of the cylindrical internal unit according to claim 10.

14. The mounting hole (30) is an elongated hole, and the longitudinal direction of the mounting hole (30) is the same as the height direction of the second stepped hole (212a). The tension structure of a cylindrical internal unit according to claim 12 or 13.

15. The pulling member includes a cam (213b1) and a rotating shaft (213b2), the cam (213b1) is installed on the mounting bar (211), and the cam (213b1) is located between the mounting bar (211) and the tension bar (212), the rotating shaft (213b2) has one end installed on the cam (213b1) and the other end installed on the base (12), and the central axis of the rotating shaft (213b2) is parallel to the central axis of the inner unit cylindrical body; The mounting bar (211) has a mounting groove extending along a circumferential direction, and the cam (213b1) is located in the mounting groove. The tension structure of the cylindrical internal unit according to claim 9.

16. The pulling member is a tie rod (213c1) and a link rod (213c2), the tie rod (213c1) is installed on the base (12), and the link rod (213c2) is rotatably connected between the tie rod (213c1) and the tension bar (212), A second slide rail is installed on the base (12), and the second slide rail The extension direction is the same as the extension direction of the mounting bar (211), and the tie rod (213c1) is installed on the second slide rail; The tension structure of the cylindrical internal unit according to claim 9.

17. The end of the mounting bar (211) is connected to the base (12); The tension structure of a cylindrical internal unit according to any one of claims 10, 15 and 16.

18. the second stepped hole (212a) includes a third through hole (a3) ​​and a fourth through hole (a4), the third through hole (a3) ​​and the fourth through hole (a4) are both elongated holes, and the width of the third through hole (a3) ​​is smaller than the width of the fourth through hole (a4); The second locking member (214) is a bolt, the shaft portion of the second locking member (214) is located within the inner unit cylinder and the third through hole (a3), the head portion of the second locking member (214) is located within the fourth through hole (a4), and the diameter of the head portion of the second locking member (214) is larger than the diameter of the shaft portion of the second locking member (214). The tension structure of a cylindrical internal unit according to any one of claims 10, 15 and 16.

19. An inner unit cylinder (200); a first tension structure (10) installed at the end of the inner unit cylinder (200); a second tension structure (20) installed on the side wall of the inner unit cylinder (200); The first tension structure (10) includes a plurality of first tension modules (11) installed at the end of the internal unit cylinder (200) by a base (12), the central axis of the base (12) overlaps with the central axis of the internal unit cylinder (200), and the plurality of first tension modules (11) are installed at intervals along the circumferential direction of the base (12); The second tension structure (20) includes a plurality of second tension modules (21) installed on the side walls of the inner unit cylinder (200), and the plurality of second tension modules (21) are installed at intervals along the circumferential direction of the inner unit cylinder; The first tension module (11) comprises: a pressure block (111) attached to the base (12) by a cap screw (112); a slider (113) attached to a side wall of the pressing block (111) on the side away from the central axis of the inner unit cylindrical body, The pressing block (111) is arranged so as to move in a direction approaching the base (12) by an external force that tightens the cap screw (112). The slider (113) is disposed so as to be displaced in a direction away from the central axis of the base (12) in response to the movement of the pressing block (111). The pressing block (111) includes a first inclined surface (111a), which is a contact surface between the pressing block (111) and the slider (113), and which is inclined toward the slider (113). A cylindrical internal unit characterized by:

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