Tension structure for cylinder internal unit and cylinder 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] This application relates to the field of undersea communication technology, and particularly to the tension structure of the inner unit of a cylinder and the inner unit of the cylinder.

Background Art

[0002] The fields of underwater communication and underwater monitoring have developed rapidly in recent years. Underwater communication and underwater monitoring always realize communication or monitoring operations using underwater products. An underwater product usually consists of an inner unit and an external pressure-resistant cylinder. A tension structure is installed in the inner unit, and the tension structure is used to support the inner unit inside the external pressure-resistant cylinder. After the inner unit enters the external pressure-resistant cylinder, it is necessary to adjust the gap between the inner unit and the pressure-resistant cylinder, and the tension structure can be used to ensure that the inner unit is uniformly supported inside the pressure-resistant cylinder.

[0003] To ensure mechanical strength and corrosion resistance, underwater products usually have a thick-walled cylindrical structure, and the tension structure is particularly important as a connection between the inner unit composed of the internal core members of underwater equipment and the external pressure-resistant cylinder body.

[0004] Conventional tension structures need to be installed symmetrically at both ends of the inner unit to meet the tension conditions. In the tension process, if the force reception on one side is uneven, it is easy to cause the phenomenon of screw jamming, which affects the tension effect. Also, conventional tension structures are difficult to detach and attach, affecting work efficiency.

Summary of the Invention

Problems to be Solved by the Invention

[0005] This application provides a tension structure of the inner unit of a cylinder and the inner unit of the cylinder to solve the technical problems that the uneven force reception of the conventional tension structure affects the tension effect, is difficult to detach and attach, and has low work efficiency.

Means for Solving the Problems

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

[0007] In some feasible implementations, the first tension module includes a pressing block attached to the base by a retaining screw and a slider attached to the side wall of the pressing block on the side away from the central axis of the inner unit cylinder body. The pressing block is arranged to move in a direction approaching the base by an external force for tightening the retaining screw. The slider is arranged to generate a displacement in a direction away from the central axis of the base following the pressing block. The pressing block includes a first inclined surface, and the first inclined surface is the contact surface between the pressing block and the slider and is inclined in the direction of the slider.

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

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

[0010] In some feasible implementations, the side of the slider away from the pressing block is an arc surface, and the circles where the arc surfaces of the plurality of sliders are located overlap.

[0011] In some feasible implementations, the first stepped hole includes a first through hole and a second through hole. Both the first through hole and the second through hole are elongated holes, and the width of the first through hole is smaller than the width of the second through hole. The first anti-loosening member is a bolt. The shaft portion of the first anti-loosening member is located in the base and the first through hole, and the head portion of the first anti-loosening member is located in the second through hole. The diameter of the head portion of the first anti-loosening member is larger than the diameter of the shaft portion of the first anti-loosening member.

[0012] In some feasible 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 feasible 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 feasible implementations, the number of the first tension structures is one or two. When the number of the first tension structures is two, the two first tension structures are symmetrically installed at both ends of the inner unit cylinder.

[0015] In some feasible implementations, the second tension module includes a mounting bar installed on the side wall of the inner unit cylinder body, and having the same extending direction and length as the inner unit cylinder body, a tension bar installed on the mounting bar by a second anti-loosening member and having the same extending direction as the mounting bar, and a pulling member installed on the base. A second stepped hole is formed in the tension bar. One end of the second anti-loosening member is connected to the inner unit cylinder body, and the other end is locked in the second stepped hole. The pulling member is arranged to drive the tension bar to move away from the mounting bar under the action of an external force.

[0016] In some feasible implementations, the tension structure further includes a mounting hole opened at an end of the inner unit cylinder body. The pulling member is inserted through 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, and the second inclined surface inclines towards the direction of the pulling member. A third inclined surface is installed on the support block, and the second inclined surface and the third inclined surface are attached to each other, and have the same inclination angle and inclination direction.

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

[0018] In some feasible implementations, the mounting hole is formed on the wall surface at the end of the inner unit cylinder body, and the extending direction of the mounting hole is the same as that of the tension bar. The pulling member is a pulling bolt, and the aperture of the mounting hole is larger than the outer diameter of the pulling member.

[0019] In some feasible implementations, the mounting hole is formed on the base, and the extending direction of the mounting hole is the same as that of the tension bar. The pulling member is a pulling bolt, and the aperture of the mounting hole is larger than the outer diameter of the pulling member.

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

[0021] In some feasible 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. One end of the rotating shaft is installed on the cam, and the other end is installed on the base. The central axis of the rotating shaft is parallel to the central axis of the inner unit cylinder body. A mounting groove extending along the circumferential direction is installed on the mounting bar, and the cam is located in the mounting groove.

[0022] In some feasible 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, and the extending direction of the second slide rail is the same as that of the mounting bar. The tie rod is installed on the second slide rail.

[0023] In some feasible implementations, the end of the mounting bar is connected to the base.

[0024] In some feasible implementations, the second stepped hole includes a third through hole and a fourth through hole. Both the third through hole and the fourth through hole are oblong holes, and the width of the third through hole is smaller than the width of the fourth through hole. The second anti-loosening member is a bolt. The shaft portion of the second anti-loosening member is located in the inner unit cylinder body and in the third through hole, and the head portion of the second anti-loosening member is located in the fourth through hole. The diameter of the head portion of the second anti-loosening member is larger than the diameter of the shaft portion of the second anti-loosening member.

[0025] The inner unit of the cylinder according to the second aspect of the present application includes an inner unit cylinder body, a first tension structure installed at an end of the inner unit cylinder body, and a second tension structure installed on a side wall of the inner unit cylinder body. The first tension structure includes a plurality of first tension modules installed at the end of the inner unit cylinder body by a base. The central axis of the base coincides with the central axis of the inner unit cylinder body. The plurality of first tension modules are installed at intervals along the circumferential direction of the base. The second tension structure includes a plurality of second tension modules installed on the side wall of the inner unit cylinder body. The plurality of second tension modules are installed at intervals along the circumferential direction of the inner unit cylinder body.

Effect of the Invention

[0026] In the tension structure of the inner unit of the cylinder body and the inner unit of the cylinder body according to the present application, the tension structure includes a first tension structure and a second tension structure. The first tension structure is installed at the end of the inner unit cylinder body and includes a plurality of first tension modules installed at the end of the inner unit cylinder body by a base. The central axis of the base coincides with the central axis of the inner unit cylinder body. The plurality of first tension modules are installed at intervals along the circumferential direction of the base. The second tension structure is installed on the side wall of the inner unit cylinder body and includes a plurality of second tension modules installed on the side wall of the inner unit cylinder body. The plurality of second tension modules are installed at intervals along the circumferential direction of the inner unit cylinder body. The tension structure according to the present application can achieve the strength required for tension through the cooperation of the first tension structure and the second tension structure. During the tension process, uniform tension can be realized, the phenomenon of screw jamming is less likely to occur, and it is easy to attach and detach, with simple operation, effectively improving work efficiency.

Brief Description of the Drawings

[0027] To more clearly illustrate the technical solution of the present application, the drawings required for use in the following embodiments are briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative efforts.

Figure 1

Figure 2

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Figure 8

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Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0028] Hereinafter, with reference to the drawings in the embodiments of the present application, the technical solution means in the embodiments of the present application will be clearly described. Obviously, the described embodiments are some of the embodiments of the present application, not all of them. Based on the embodiments of the present application, other embodiments obtained on the premise that those skilled in the art do not perform creative labor all belong to the protection scope of the present application.

[0029] Hereinafter, terms such as "first" and "second" are only used for the purpose of explanation and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined by "first", "second", etc. may explicitly or implicitly include one or more of the said features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] Also, in the present application, orientation terms such as "upper", "lower", "inner", "outer", etc. are defined with respect to the orientation in which the members in the drawings are schematically placed. These directional terms are relative concepts and are used for relative explanation and clarification, and can change according to the change in the orientation in which the members in the drawings are placed.

[0031] The field of underwater communication and underwater monitoring has developed rapidly in recent years. Underwater communication and underwater monitoring always use underwater products to realize communication or monitoring operations.

[0032] The underwater product usually consists of an internal unit and an external pressure-resistant cylinder. A tension structure is installed in the internal unit, and the tension structure is used to support the internal unit inside the external pressure-resistant cylinder. After the internal unit enters the external pressure-resistant cylinder, it is necessary to adjust the gap between the internal unit and the pressure-resistant cylinder, and the tension structure can be used to ensure that the internal unit is uniformly supported inside the pressure-resistant cylinder.

[0033] In order to ensure mechanical strength and corrosion resistance performance, the underwater product is usually a thick-walled cylindrical structure, and the tension structure is particularly important as the connection between the internal unit composed of the internal core member of the underwater device and the external pressure-resistant cylinder body.

[0034] The conventional tension structure needs to be symmetrically installed at both ends of the internal unit to meet the tension conditions. In the tension process, if the force reception on one side is uneven, it is easy to cause the phenomenon of screw jamming, which affects the tension effect. In addition, the conventional tension structure is difficult to detach and affects the working efficiency.

[0035] To solve the above technical problems, the embodiments of the present application provide a tension structure for the internal unit of the cylinder body, which can realize uniform tension between the end and the side wall of the internal unit cylinder body in the tension process, and is easy to detach, simple to operate, and effectively improves the working efficiency.

[0036] Figure 1 is a schematic structural diagram of the tension structure of the internal unit of the cylinder body according to the embodiment of the present application.

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

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

[0039] Referring to FIGS. 1, 2 and 3, the tension structure of the inner unit of the cylinder body 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 body 200, and the first tension structure 10 is used for the tension operation at the end of the inner unit cylinder body 200.

[0041] Specifically, the first tension structure 10 includes a plurality of first tension modules 11 installed at the end of the inner unit cylinder body 200 by a base 12. Here, the base 12 may be fixedly attached to the end of the inner unit cylinder body 200 with bolts. The central axis of the base 12 coincides with the central axis of the inner unit cylinder 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 an attachment foundation for the plurality of first tension modules 11, and the plurality of first tension modules 11 can realize uniform tension at the end of the inner unit cylinder body 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 with a holding screw 112. The pressing block 111 may be a block-shaped structure with an inclined surface, and the holding screw 112 may be attached to the middle position of the pressing block 111. Tighten the holding screw 112 In the process of attachment, the pressing block 111 moves in a direction approaching the base 12 together with the holding screw 112, and the distance between the bottom surface of the pressing block 111 and the top surface of the base 12 can be gradually reduced. Here, the pressing block 111 includes two side walls. One side wall approaches the central axis of the inner unit cylinder 200, and the other side wall moves away from the central axis of the inner unit cylinder 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 the first inclined surface 111a is the side wall that moves away from the central axis of the inner unit cylinder 200.

[0045] That is, in the attachment process, first, the holding screw 112 can be attached to the pressing block 111, and then the holding screw 112 can be attached to the base 12. In this way, in the process of gradually locking the holding screw 112 inside the base 12, the pressing block 111 moves together with the holding 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 the 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 fact that the number of the first tension modules 11 may be three is merely illustrative and does not limit the number of the first tension modules 11. In other specific implementations, the number of the first tension modules 11 may be two, four, five, or even more. The number of the first tension modules 11 can be adaptively adjusted according to the actual shape and dimensions of the inner unit cylinder 200, and is not specifically limited here.

[0047] Continuing to refer to FIGS. 2 and 3, the slider 113 may have a valve-like structure. One side has a planar structure, and the other side has a curved surface structure. The planar structure side is attached to the side wall of the pressing block 111 that is away from the central axis of the inner unit cylinder 200, and the curved surface 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 way, the first inclined surface 111a of the pressing block 111 is bonded to the inclined planar structure of the slider 113, and the inclination angles and directions of both are the same. In this way, in the process of the pressing block 111 being driven by the holding screw 112 to move downward, the pressing block 111 can push the slider 113 through the first inclined surface 111a and move 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 the slider 113 moves along the first slide rail 121 in a direction away from the central axis of the base 12 during the sliding process. 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 arc surface, and the circles where the arc surfaces of the plurality of sliders 113 are located overlap. In this way, in the process of the pressing block 111 pushing and moving the slider 113, the plurality of sliders 113 move synchronously in a direction away from the central axis of the base 12, and the sliding distance of the slider 113 can be adjusted according to the moving distance of the holding screw 112 pushing the pressing block 111. Furthermore, the increase amount of the radius of the circle where the arc surface is located is controlled by the sliding distance of the slider 113 to reach the dimensions required for the tension at the end. Naturally, in this implementation form, the slider 113 having an arc surface is applied to the internal unit cylinder 200 with a circular cross-sectional shape. In other implementation forms, the shape of the slider 113 can be adjusted according to the shape of the actual internal unit The shape of the cylinder 200 can be adjusted. Exemplarily, when the shape of the internal unit cylinder 200 is a cube, the side of the slider 113 away from the pressing block is a plane, and the planes of the plurality of sliders 113 can form a cube structure.

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

[0052] Continuing to refer to FIGS. 3 and 4, the first tension structure 10 further includes a first anti-loosening member 13. A first stepped hole 113a is formed 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 extending direction of the first slide rail 121.

[0053] Here, the inside of the first stepped hole 113a includes a first through hole a1 and a second through hole a2. The first through hole a1 is installed close to the base 12. Both the first through hole a1 and the second through hole a2 may 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 FIG. 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 anti-loosening member 13 may be a bolt. One end of the first anti-loosening member 13 may be a shaft portion, and the other end may be a head portion. Thereby, the shaft portion of the first anti-loosening member 13 can be located in the base 12 and the first through hole a1, and the head portion of the first anti-loosening member 13 can be located in the second through hole a2.

[0056] In one specific implementation, the number of the first stepped holes 113a and the pressing blocks 111 is both two. The two first stepped holes 113a are symmetrically installed on both sides of the first slide rail 121, the two pressing blocks 111 are symmetrically installed 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. The notch structures are installed corresponding to the pressing blocks 111. On the premise of meeting the structural strength of the slider 113, by installing the notch structures, the overall self-weight of the first tension structure 10 can be effectively reduced.

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

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

[0059] In the process of tightening the pressing screw 112, the pressing 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. In this process, the first inclined surface 111a of the pressing block 111 can push the slider 113 to move the slider 113 in a direction away from the central axis of the base 12 on the first slide rail 121. 。During the process of the slider 113 moving, the first anti-loosening member 13 located in the first stepped hole 113a restricts the maximum slide displacement of the slider 113. During the process of the slider 113 sliding, the first stepped hole 113a is driven by the slider 113 to move relative to the first anti-loosening member 13. The distance between the first anti-loosening member 13 and the end of the pressing block 111 of the first stepped hole 113a that moves away gradually increases, and the distance between the first anti-loosening member 13 and the end of the pressing block 111 of the first stepped hole 113a that approaches gradually decreases. When the slider 113 moves to the maximum displacement position, the first anti-loosening member 13 abuts against the wall surface on the side approaching the pressing block 111 of the first stepped hole 113a, thus restricting further movement of the slider 113 and thereby avoiding the slider 113 from coming off. By simultaneously operating a plurality of the first tension modules 11, a plurality of sliders 113 can be uniformly tensioned outward in the circumferential direction of the base 12, ensuring the tension effect and the uniformity of the tension.

[0060] The first tension structure 10 according to the embodiment of the present application may be installed in a narrow space, may be used for internal unit cylinders 200 of multiple types of shapes, and the shape of the internal unit cylinder 200 may be a regular shape such as a circle or a polygon, or may be an irregular shape such as a special shape. By controlling the height of the pressing block 111 with the retaining screw 112, the sliding of the slider 113 along the first slide rail 121 can be controlled. During the tensioning operation, the heights of a plurality of pressing blocks 111 can be adjusted to be the same. The slider 113 is pressed downward by the retaining screw 112 to make the outward slide distances of each slider 113 the same, realizing uniform tension and meeting the requirements of support and clamping. When it is necessary to remove the first tension module 11, the slider 113 can be taken out of the narrow space only by removing the retaining screw 112 and the first anti-loosening member 13, which is easy to attach and detach, has simple operation, and effectively improves the working efficiency.

[0061] FIG. 5 is a schematic structural view 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 application.

[0063] FIG. 7 is a partial enlarged view of the D portion in FIG. 6.

[0064] Referring to FIGS. 1, 5, 6, and 7, the second tension structure 20 includes a plurality of second tension modules 21, and the plurality of second tension modules 21 are installed on the side wall of the internal unit cylinder body 200 and are installed at intervals along the circumferential direction of the internal unit cylinder body 200. The plurality of second tension modules 21 are used for the tension operation of the side wall of the internal unit cylinder body 200.

[0065] The second tension module 21 includes a mounting bar 211, a tension bar 212, a pulling member, and a second anti-loosening member 214. The mounting bar 211 may be fixed to the side wall of the internal unit cylinder body 200 by screws, and both the extending direction and the length of the mounting bar 211 may be the same as those of the internal unit cylinder body 200. Here, the mounting bar 211 may have a structure with a concave groove in the middle, and a support block 215 is installed inside the concave groove. The tension bar 212 may be installed on the mounting bar 211 by the second anti-loosening member 214, and the extending direction of the tension bar 212 is the same as the extending direction of the mounting bar 211. Here, a second stepped hole 212a is formed in the tension bar 212, and one end of the second anti-loosening member 214 is connected to the internal unit cylinder body, and the other end is locked in the second stepped hole 212a. One end of the second anti-loosening member 214 may be fixedly connected to the wall surface of the internal unit cylinder body 200, and the other end may be 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 extending direction of the tension bar 212 is the same as that of the mounting bar 211, and the central axes of the mounting bar 211, the tension bar 212, and the inner unit cylinder 200 are in the same plane.

[0067] The pulling member is installed on the base 12 and can drive the tension bar 212 to move away from the mounting bar 211 under the action of an external force, thereby realizing the tension of the side wall of the inner unit cylinder 200.

[0068] In one specific implementation, the tension structure of the inner unit of the cylinder further includes a mounting hole 30. The mounting hole 30 is opened at the end of the inner unit cylinder 200. The pulling member is penetrated in the mounting hole 30, and one end of the pulling member is installed on the tension bar 212. Here, the pulling member may be a pulling bolt 213a. One end of the tension bar 212 may be installed on the mounting bar 211 with the pulling bolt 213a. The pulling bolt 213a is penetrated in the mounting hole 30. One end may be connected to the tension bar 212, and the other end is locked to the outside of the mounting hole 30 away from the tension bar 212. The pulling bolt 213a is locked into the tension bar 212 under the action of an external force. During the process of locking the pulling bolt 213a, the tension bar 212 can move in the direction away from the mounting bar 211, thereby realizing the tension operation of the side wall of the inner unit cylinder 200.

[0069] Specifically, a support block 215 is installed on the mounting bar 211. 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 in the direction of the pulling bolt 213a. A third inclined surface 215a with 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 the contact surfaces between the tension bar 212 and the support block 215 respectively.

[0070] In this way, the bonded second inclined surface 212b and the third inclined surface 215a are provided. With the tension bolt 213a locking the tension bar 212 and moving the tension bar 212 in a direction away from the mounting bar 211, the tension bar 212 can slide along the third inclined surface 215a and generate displacements in the B direction and the C direction shown in FIG. 6. Here, the B direction may be the axial direction of the inner unit cylinder 200, and the C direction may be the radial direction of the inner unit cylinder 200.

[0071] The tension bar 212 further includes a connected straight surface portion 212c and a concave groove portion 212d. The end of the straight surface portion 212c away from the concave groove portion 212d is connected to the second inclined surface 212b. That is, the straight surface portion 212c is installed between the second inclined surface 212b and the concave groove portion 212d, and the concave 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. The protruding end 215b is formed by the third inclined surface 215a extending along the straight surface portion 212c in the direction of the concave groove portion 212d, and the projection of the protruding end 215b in the direction of the tension bolt 213a is located within the concave groove portion 212d. In this way, after the tensioning operation is completed, due to the action of an external force, the locking force between the tension bolt 213a and the tension bar 212 decreases, and the tension bar 212 can slide back to the initial position along the third inclined surface 215a in the opposite directions of B and C. In this case, until the protruding end 215b completely enters the concave groove portion 212d, the distance between the protruding end 215b and the concave groove portion 212d gradually decreases, thereby preventing the tension bar 212 from coming off along the direction of gravity after the tensioning operation is completed.

[0073] Thus, in the process of the pull bolt 213a locking the tension bar 212, the pull bolt 213a and the tension bar 212 are displaced synchronously in the B direction, so that the pull bolt 213a can move a certain distance in the B direction even within the mounting hole 30.

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

[0075] Specifically, the mounting hole 30 may be formed on the wall surface of the inner unit cylinder 200 or on the base 12. Here, the extending direction of the mounting hole 30 is the same as the extending direction of the tension bar 212.

[0076] In one specific implementation, the mounting hole 30 may be a long 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 the first rotation state of the cam and the rotating shaft according to the embodiment of the present application.

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

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

[0080] Specifically, the cam 213b1 may be vertically installed between the mounting bar 211 and the tension bar 212, and the rotating surface of the cam 213b1 contacts the mounting bar 211 and the tension bar 212. A mounting groove extending in the circumferential direction may be provided on the mounting bar 211, and the cam 213b1 is installed in the mounting groove and can rotate relative to the mounting bar 211 and the tension bar 212 within the mounting groove.

[0081] One end of the rotating shaft 213b2 is installed on the cam 213b1, the other end is installed on the base 12, and the central axis of the rotating shaft 213b2 may be parallel to the central axis of the inner unit cylinder 200.

[0082] That is, in the process of realizing the tension operation by the second tension module 21, the cam 213b1 can be driven to rotate by the rotating shaft 213b2. Due to the characteristics of the cam 213b1 itself, during the rotation process of the cam 213b1, the tip E on the side wall of the cam 213b1 that is far from the rotating 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 the 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. Of course, the rotating shaft 213b2 may also be attached to the base 12 by other forms or other members, and it is not specifically limited here.

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

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

[0086] Specifically, a second slide rail (not shown) is installed on the base 12, and the second slide The extending direction of the idle rail is the same as that of the mounting bar 211. A slide rail groove adapted to the second slide rail is provided on the side facing the base 12 of the tie rod 213c1. 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 pushing the tie rod 213c1, the tie rod 213c1 can push the tension bar 212 through the link rod 213c2 to generate a radial displacement, thereby realizing a radial tension.

[0087] In FIG. 10, the number of the link rods 213c2 is two, and both ends of the two link rods 213c2 are respectively hinged to the tension bar 212 and the tie rod 213c1. Naturally, the number of the link rods 213c2 is not limited to two. In other implementations, the number of the link rods 213c2 may be one, three or more. Moreover, the connection method between the link rod 213c2, the tension bar 212 and the tie rod 213c1 may adopt other forms, as long as it can be realized that both ends of the link rod 213c2 are rotatably connected to the tension bar 212 and the tie rod 213c1 respectively, and it is not specifically limited here.

[0088] It should be emphasized that the number of the 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 inner unit cylinder 200. However, the fact that the number of the second tension modules 21 may be three is merely an illustrative example, and it does not limit the number of the second tension modules 21. In other specific implementations, the number of the second tension modules 21 may be two, four, five, or even more. The number of the second tension modules 21 can be adaptively adjusted according to the actual shape and dimensions of the inner unit cylinder 200, and is not specifically limited here. Here, the number of the support blocks 215 and the second anti-loosening members 214 in the second tension module 21 can be adjusted according to the axial dimension of the actual inner unit cylinder 200.

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

[0090] Referring to FIG. 11, 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 may both be elongated holes, and the width of the third through hole a3 is smaller than the width of the fourth through hole a4. Here, the third through hole a3 is close to the mounting bar 211, and the fourth through hole a4 is away from the mounting bar 211.

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

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

[0093] Hereinafter, taking the tension member in the second tension structure 20 as the tension bolt 213a as an example, the operation process of the second tension structure 20 will be introduced.

[0094] Taking the tension member as the tension bolt 213a, the mounting hole 30 is opened in the base 12, and the mounting hole 30 is an elongated hole as an example. The tension bolt 213a may pass through the mounting hole 30, and the threaded end may be screwed onto the tension bar 212, and the other end is locked outside the base 12. When it is necessary to realize the tension operation on 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 anti-loosening member 214 and cannot rotate, the tension bar 212 can generate a tendency to move obliquely upward along the second inclined surface 212b under the action of an external force, that is, displacements in the B and C directions can be generated. As the tension bar 212 generates a displacement in the C direction, the tension bar 212 drives the tension bolt 213a to move synchronously. In this way, the tension member generates a displacement in the C direction synchronously with the tension bar 212 along the longitudinal direction of the mounting hole 30. In this process, when the tension bar 212 generates a displacement in the B direction, the distance between the end of the tension bar 212 and the mounting hole 30 gradually decreases, but the distance between the protruding end 215b and the concave groove portion 212d gradually increases.

[0095] After completing the tension operation on the side wall of the inner unit cylinder 200, loosen the pulling bolt 213a in the reverse direction to reduce the fastening force between the pulling bolt 213a and the tension bar 212, so that 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 reverse directions of B and C. In this process, the distance between the protruding end 215b and the concave groove portion 212d gradually decreases, and the protruding end 215b gradually enters the concave groove portion 212d. Even if the pulling bolt 213a comes out of the tension bar 212, the tension bar 212 will not come off along the gravity direction.

[0096] The second tension structure 20 according to the present application installs a plurality of second tension modules 21 uniformly distributed along the axial direction of the inner unit cylinder 200. During the tension operation, the tension bar 212 is pulled by the pulling bolt 213a, so that the tension bar 212 can move along the radial and axial directions of the inner unit cylinder 200 until it is attached to the external pressure-resistant cylinder. By installing the second anti-loosening member 214, it can effectively prevent the tension bar 212 from coming off the inner unit cylinder 200 when it is in a loose state. In addition, the tension bar 212 has a bending return guide, which can not only guide when it opens in the radial direction, but also ensure that the protruding end 215b of the support block 215 is located in the concave groove portion 212d when it shrinks in the radial direction, preventing the tension bar 212 from coming off due to the action of gravity. When it is necessary to remove the second tension module 21, the removal of the tension bar 212 can be realized only by removing the pulling bolt 213a and the second anti-loosening member 214.

[0097] Hereinafter, taking the pulling members in the second tension structure 20 as the cam 213b1 and the rotating shaft 213b2 as an example, the operation process of the second tension structure 20 will be introduced.

[0098] When it is necessary to realize the tension operation on the side wall of the inner unit cylinder 200, the rotating shaft 213b2 is rotated, and the cam 213b1 is driven by the rotating shaft 213b2 to rotate. In the process of the tip E of the cam 213b1 rotating in the direction approaching the tension bar 212, the tension bar 212 is continuously pushed up, the tension bar 212 is displaced along the C direction, and when the tip E of the cam 213b1 contacts the tension bar 212, the displacement generated in the C direction of the tension bar 212 is the largest, and the radial tension operation is completed. When it is necessary to return the tension bar 212, it is only necessary to continue rotating the cam 213b1 or rotate the cam 213b1 in the reverse direction to separate the tip E from the tension bar 212.

[0099] Hereinafter, taking the tension members in the second tension structure 20 being the tie rod 213c1 and the link rod 213c2 as an example, the operation process of the second tension structure 20 will be introduced.

[0100] When it is necessary to realize the tension operation on the side wall of the inner unit cylinder 200, the tie rod 213c1 is pushed, the tie rod 213c1 pushes the link rod 213c2, whereby the link rod 213c2 pushes and moves the tension bar 212. In the process of the tension bar 212 moving, the tension bar 212 is continuously pushed up by the link rod 213c2 to generate a displacement in the C direction. When the tie rod 213c1 moves to the limit position, the displacement generated along the C direction of the tension bar 212 is the largest, and the radial tension operation is completed. When it is necessary to return the tension bar 212, the tie rod 213c1 can be pulled to return the tie rod 213c1 to the initial position.

[0101] The tension structure according to the present application can achieve the strength required for tension through the cooperation of the first tension structure 10 and the second tension structure 20. In the tension process, uniform tension can be realized, the phenomenon of screw jamming is less likely to occur, it is easy to attach and detach, the operation is simple, and the working efficiency can be effectively improved.

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

[0103] During operation, the cylinder internal unit according to the embodiment of the present application can achieve the strength required for tension through the cooperation of the first tension structure 10 and the second tension structure 20. During the tensioning process, uniform tension can be realized, the phenomenon of screw jamming is less likely to occur, and it is easy to attach and detach, with simple operation, effectively improving the working efficiency.

[0104] It should be noted that those skilled in the art can easily conceive of other implementation means of the present application after considering the specification and implementing the application disclosed herein. The present application is intended to cover any modification, use, or adaptive change of the present application, and these modifications, uses, or adaptive changes include well-known common knowledge or conventional means in the technical field not disclosed in the present application according to the general principles of the present application. The specification and embodiments are merely illustrative, and the true scope of the present application is indicated by the claims.

[0105] It should be understood that the present application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is limited only by the appended claims for patents.

Explanation of Signs

[0106] 10 First tension structure 11 First tension module 111 Pressing block 111a First inclined surface 112 Holding screw 113 Slider 113a First stepped hole a1 First through hole a2 Second through hole 12 Base 121 First slide rail 13 First anti-loosening 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 portion 212d Groove portion 213a Pulling bolt 213b1 Cam 213b2 Rotation shaft 213c1 Tie rod 213c2 Link rod 214 Second anti-loosening member 215 Support block 215a Third inclined surface 215b Protruding end 30 Mounting hole 200 Inner unit cylinder

Claims

1. A first tension structure (10) installed at the end of the inner unit cylinder body, and a second tension structure (20) installed on the side wall of the inner unit cylinder body, wherein the first tension structure (10) includes a plurality of first tension modules (11) installed at the end of the inner unit cylinder body by a base (12), the central axis of the base (12) overlaps with the central axis of the inner unit cylinder body, 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 wall of the inner unit cylinder body, and the plurality of second tension modules (21) are installed at intervals along the circumferential direction of the inner unit cylinder body, characterized in that it is a tension structure of an inner unit of a cylinder body.

2. The first tension module (11) includes a pressing block (111) attached to the base (12) by a holding screw (112), and a slider (113) attached to the side wall of the pressing block (111) on the side away from the central axis of the inner unit cylinder body, the pressing block (111) is arranged to move in a direction approaching the base (12) by an external force for tightening the holding screw (112), the slider (113) is arranged to generate a displacement in a direction away from the central axis of the base (12) following the pressing block (111), the pressing block (111) includes a first inclined surface (111a), the first inclined surface (111a) is a contact surface between the pressing block (111) and the slider (113), and the first inclined surface (111a) is inclined in the direction of the slider (113), characterized in that it is the tension structure of the inner unit of the cylinder body according to Claim 1.

3. A first slide rail (121) is installed on the base (12), and the slider (113) is slidably installed on the first slide rail (121), characterized in that it is the tension structure of the inner unit of the cylinder body according to Claim 2.

4. The first tension structure (10) further includes a first anti-loosening member (13), a first stepped hole (113a) is provided in the slider (113), 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 anti-loosening member (13) is installed on the base (12), and the other end is located within the first stepped hole (113a). The tension structure of the inner unit of the cylinder described in claim 3, characterized in that.

5. The side of the slider (113) away from the pressing block (111) is an arc surface, and the circles where the arc surfaces of the plurality of sliders (113) are located overlap. The tension structure of the inner unit of the cylinder described in claim 4, characterized in that.

6. The first stepped hole (113a) includes a first through hole (a1) and a second through hole (a2), both the first through hole (a1) and the second through hole (a2) are long holes, and the width of the first through hole (a1) is smaller than the width of the second through hole (a2). The first anti-loosening member (13) is a bolt, the shaft portion of the first anti-loosening member (13) is located within the base (12) and the first through hole (a1), the head of the first anti-loosening member (13) is located within the second through hole (a2), and the diameter of the head of the first anti-loosening member (13) is larger than the diameter of the shaft portion of the first anti-loosening member (13). Large. The tension structure of the inner unit of the cylinder described in claim 4, characterized in that.

7. 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 inner unit of the cylinder described in claim 6, characterized in that.

8. 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 inner unit of the cylinder described in claim 6, characterized in that.

9. 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 at both ends of the inner unit cylinder body. The tension structure of the inner unit of the cylinder described in claim 1, characterized in that.

10. The second tension module (21) includes a mounting bar (211) installed on the side wall of the inner unit cylinder body, and having the same extending direction and length as the inner unit cylinder body, a tension bar (212) installed on the mounting bar (211) by a second anti-loosening member (214) and having the same extending direction as the mounting bar (211), a pulling member installed on the base (12), a second stepped hole (212a) is formed in the tension bar (212), one end of the second anti-loosening member (214) is connected to the inner unit cylinder body, and the other end is locked in the second stepped hole (212a), the pulling member is arranged to drive the tension bar (212) to move away from the mounting bar (211) under the action of an external force, The tension structure of the inner unit of the cylinder body according to claim 2, characterized in that.

11. The tension structure further includes a mounting hole (30), the mounting hole (30) is formed at the end of the inner unit cylinder body, the pulling member is formed through 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), 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 towards 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 angles and inclination directions of the second inclined surface (212b) and the third inclined surface (215a) are the same, The tension structure of the inner unit of the cylinder body according to claim 10, characterized in that.

12. The tension bar (212) further includes a connected straight surface portion (212c) and a concave groove portion (212d), the end of the straight surface portion (212c) away from the concave groove portion (212d) is connected to the second inclined surface (212b), and the concave groove portion (212d) is installed between the second inclined surface (212b) and the pulling member, The support block (215) includes a protruding end (215b), the protruding end (215b) extends along the straight surface portion (212c) in the direction of the concave groove portion (212d), and the projection of the protruding end (215b) in the direction of the pulling member is located within the concave groove portion (212d). The tension structure of the inner unit of the cylinder according to claim 11, characterized in that.

13. The mounting hole (30) is formed in the wall surface of the end of the inner unit cylinder 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 aperture diameter of the mounting hole (30) is larger than the outer diameter of the pulling member. The tension structure of the inner unit of the cylinder according to claim 11, characterized in that.

14. The mounting hole (30) is formed 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 aperture diameter of the mounting hole (30) is larger than the outer diameter of the pulling member. The tension structure of the inner unit of the cylinder according to claim 11, characterized in that.

15. 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 the inner unit of the cylinder according to claim 13 or 14, characterized in that.

16. 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). One end of the rotating shaft (213b2) is installed on the cam (213b1), the other end is installed on the base (12), and the central axis of the rotating shaft (213b2) is parallel to the central axis of the inner unit cylinder body. A mounting groove extending along the circumferential direction is installed on the mounting bar (211), and the cam (213b1) is located within the mounting groove. The tension structure of the inner unit of the cylinder according to claim 10, characterized in that.

17. The pulling member includes 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). The extending direction of the second slide rail is the same as the extending direction of the mounting bar (211), and the tie rod (213c1) is installed on the second slide rail. The tension structure of the inner unit of the cylinder described in claim 10, characterized in that.

18. The end of the mounting bar (211) is connected to the base (12). The tension structure of the inner unit of the cylinder described in any one of claims 11, 16, and 17, characterized in that.

19. The second stepped hole (212a) includes a third through hole (a3) and a fourth through hole (a4). Both the third through hole (a3) and the fourth through hole (a4) are elongated holes, and the width of the third through hole (a3) is smaller than the width of the fourth through hole (a4). The second anti-loosening member (214) is a bolt. The shaft portion of the second anti-loosening member (214) is located inside the inner unit cylinder and in the third through hole (a3). The head portion of the second anti-loosening member (214) is located in the fourth through hole (a4), and the diameter of the head portion of the second anti-loosening member (214) is larger than the diameter of the shaft portion of the second anti-loosening member (214). The tension structure of the inner unit of the cylinder described in any one of claims 11, 16, and 17, characterized in that tension structure.

20. 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), including The first tension structure (10) includes a plurality of first tension modules (11) installed at the end of the inner unit cylinder (200) by a base (12). The central axis of the base (12) coincides with the central axis of the inner unit cylinder (200). 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 wall of the inner unit cylinder body (200), and the plurality of second tension modules (21) are installed at intervals along the circumferential direction of the inner unit cylinder body. The inner unit of the cylinder body is characterized by the above.

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