A universal cable tray, an installation method for the universal cable tray, and a cable tray system.

Abstract

This invention relates to the field of cable tray construction technology, specifically to a universal cable tray, its installation method, and a cable tray system. The universal cable tray includes at least two longitudinal segments, adjacent longitudinal segments are connected by movable joints, and the rotational freedom of the movable joints can be locked or unlocked. At least one transverse frame is connected to each longitudinal segment, the transverse frame including a bracket and a support. Supports are respectively provided at both ends of the bracket. The longitudinal and transverse frames are covered with flexible sheaths, which are open at both ends along a first direction. This invention overcomes the technical problems of existing cable trays requiring on-site cutting, bending, and welding to complete turning and crossing operations, resulting in low construction efficiency and susceptibility to limitations imposed by on-site conditions.

Description

Technical Field

[0001] This invention relates to the field of cable tray construction technology, and in particular to a universal cable tray, a method for installing a universal cable tray, and a cable tray system. Background Technology

[0002] Cable trays are devices used to lay cables, generally consisting of hangers and trays. The hangers are used to connect the trays to the ceiling, while the trays are used to hold the cables. Their specific shape varies depending on the user's needs and can be either trough-shaped or tubular. In order to withstand the load from the cables or the outside environment and to prevent the cables from sagging or swaying, large cable trays (such as those in bridges or tunnels) are generally rigid structures, meaning that their trays are rigid sheet metal parts (such as aluminum alloy sheet metal parts or stainless steel sheet metal parts).

[0003] For rigid cable trays, when they need to turn or cross obstacles, workers need to cut, bend, and weld existing sheet metal parts according to the site conditions and cable tray installation specifications to create various horizontal bends, vertical bends, or composite bends on-site, thereby enabling the cable tray to turn and cross. However, this approach is time-consuming and labor-intensive, leading to reduced construction efficiency. Furthermore, due to special construction requirements or site conditions, some construction sites do not have the conditions for cutting, bending, and welding, making cable tray construction difficult. Therefore, there is an urgent need to develop a technology that enables cable trays to turn and cross without on-site cutting, bending, and welding operations. Summary of the Invention

[0004] The purpose of this invention is to overcome the technical problems of existing cable trays requiring on-site cutting, bending and welding to complete turning and crossing, which not only results in low construction efficiency but also makes it difficult to carry out due to site conditions. The invention provides a universal cable tray, a method for installing the universal cable tray, and a cable tray system.

[0005] In a first aspect, the present invention provides a universal cable tray, comprising:

[0006] A longitudinal skeleton, the length of which is set along a first direction, is divided into at least two longitudinal segments along the first direction. Two adjacent longitudinal segments are connected by a movable joint. The movable joint includes at least two rotational degrees of freedom with axes perpendicular to the first direction. The rotational degrees of freedom of the movable joint can be locked or unlocked.

[0007] A transverse frame is provided, with at least one transverse frame connected to each longitudinal segment. The transverse frame includes a bracket and a support. The length of the bracket is set along a second direction, and a support is set at each end of the bracket along the second direction. The length of the support is set along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0008] A flexible sheath is fitted over the longitudinal and transverse skeletons, with openings at both ends along the first direction.

[0009] Preferably, at least one side of the longitudinal skeleton along the first direction is further provided with a tensioning component, the tensioning component including a fixing member and an adjusting member; the fixing member is fixed relative to the longitudinal segment located on the corresponding side of the longitudinal skeleton and closest to the end; the adjusting member is connected to the fixing member, the position of the adjusting member along the first direction is adjustable, and the corresponding end of the flexible sheath is connected to the adjusting member.

[0010] Preferably, the fixing component includes a fixed base and an adjusting screw; the fixed base is fixed relative to the corresponding longitudinal segment, the adjusting screw is threadedly connected to the fixed base, and the axis of the adjusting screw is parallel to the first direction; the adjusting component is slidably connected to the fixed base, the adjusting component abuts against the end of the adjusting screw, and rotating the adjusting screw can drive the adjusting component to move along the first direction.

[0011] Preferably, the flexible sheath and the adjusting element are detachably connected.

[0012] Preferably, at least one support is adjustable in position along the second direction, so that two supports on the same bracket can move closer to or further away from each other along the second direction.

[0013] Preferably, the flexible sheath has an opening at the top; the top of the support is movably connected to a clamp, which can move closer to or further away from the support, thereby clamping the flexible sheath between the support and the clamp or releasing the flexible sheath.

[0014] Preferably, the side of the gripper facing the flexible sheath is provided with a rolling element.

[0015] Preferably, the movable joint includes a ball joint.

[0016] Preferably, the ball joint includes a ball seat, a locking knob, and a ball head; the ball seat is located at the end of one longitudinal segment and opens towards one end of another longitudinal segment; the side wall of the ball seat is provided with at least one slit, the slit is arranged along a first direction, and one end of the slit communicates with the opening of the ball seat; an external threaded section is provided on the side wall of the ball seat surrounding the opening of the ball seat, the locking knob is threadedly connected to the external threaded section, and the locking knob has an opening in the middle; the ball head is located at the end of another longitudinal segment, the ball head passes through the opening of the locking knob and is nested in the ball seat.

[0017] Preferably, the length of at least one longitudinal segment is adjustable.

[0018] Preferably, a hanger is connected to the longitudinal frame, and / or a hanger is connected to the transverse frame.

[0019] Preferably, at least one locking lug is provided on the longitudinal segment, the locking lug extends in a direction perpendicular to the first direction, and a locking rod or locking rope is detachably connected between the locking lugs of two adjacent longitudinal segments.

[0020] Preferably, the rolling element is provided on the side of the transverse skeleton facing the flexible sheath.

[0021] In a second aspect, the present invention provides an installation method for a universal cable tray, applicable to a universal cable tray of the present invention, comprising the following steps:

[0022] S1. Connect the two ends of the longitudinal skeleton along the first direction to the two existing cable trays respectively, and / or connect the transverse skeletons located at the two ends to the two existing cable trays respectively; bend the longitudinal skeleton into a specified shape through the movable joint.

[0023] S2. Place the cable on top of the bracket.

[0024] S3. Connect the two ends of the flexible sheath to the existing cable trays at the corresponding ends.

[0025] Preferably, when the universal cable tray includes a tensioning assembly, S3 further includes the following step: tensioning the flexible sheath through the tensioning assembly.

[0026] In a third aspect, the present invention provides a cable tray system including a rigid cable tray, wherein at least two rigid cable trays are connected by a universal cable tray of the present invention.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. This invention provides a universal cable tray, comprising an internal longitudinal skeleton and a transverse skeleton, and an external flexible sheath; wherein, when the movable joint between two adjacent longitudinal segments in the longitudinal skeleton is unlocked, the longitudinal skeleton can be freely bent into various shapes without cutting, bending, or welding, so that its two ends can be connected to existing cable trays with different orientations; when the movable joint is locked, the longitudinal skeleton and the transverse skeleton together form a rigid skeleton structure, thereby providing reliable support for the cables and preventing the cables from swaying or sagging due to insufficient rigidity of the cable tray, which would negatively affect the cable layout, cable life, and the operation of equipment connected to the cables; and the flexible sheath can deform into the corresponding shape according to the longitudinal skeleton, thereby maintaining its protective function for the cables.

[0029] 2. This invention provides an installation method for a universal cable tray. By using the universal cable tray of this invention to connect two existing cable tray sections, the construction efficiency of the cable tray system can be greatly improved, and the dependence of cable tray construction on site conditions can be reduced.

[0030] 3. This invention provides a cable tray system that can reduce the manufacturing cost of the entire cable tray system and ensure structural strength by utilizing mature rigid cable trays, while also utilizing universal cable trays to improve construction efficiency and reduce the dependence of construction on site conditions. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of a universal cable tray according to the present invention;

[0032] Figure 2 This is a top view schematic diagram of a universal cable tray according to the present invention;

[0033] Figure 3 This is a front view schematic diagram of a universal cable tray according to the present invention. Figure 1 ;

[0034] Figure 4 This is a front view schematic diagram of a universal cable tray according to the present invention. Figure 2 ;

[0035] Figure 5 This is a partially enlarged front view of the universal cable tray structure at the gripper of the present invention;

[0036] Figure 6 This is a partially enlarged three-dimensional structural diagram of a universal cable tray at the tensioning assembly according to the present invention;

[0037] Figure 7 This is a magnified three-dimensional structural diagram of a universal cable tray at a movable joint according to the present invention;

[0038] Figure 8 This is a partially enlarged half-section three-dimensional structural diagram of a universal cable tray at the movable joint of the present invention;

[0039] Figure 9 This is a three-dimensional structural diagram of a single longitudinal segment of a universal cable tray according to the present invention;

[0040] Figure 10 This is a schematic diagram of the bending state of a universal cable tray according to the present invention. Figure 1 ;

[0041] Figure 11 This is a schematic diagram of the bending state of a universal cable tray according to the present invention. Figure 2 ;

[0042] Figure 12 This is a schematic diagram of the variable diameter state of a universal cable tray according to the present invention;

[0043] icon:

[0044] 11-Longitudinal segment; 12-Modular joint; 13-Vertical connector; 14-Transverse connector;

[0045] 121-Ball seat; 1211-Slit; 122-Locking knob; 123-Ball head; 124-Locking lug;

[0046] 21-Bracket; 22-Support; 221-Gripper; 222-Elastic component;

[0047] 3-Flexible sheath; 31-Limiting protrusion; 32-Clamping plate; 33-Hook;

[0048] 4-Tensioning assembly; 41-Adjusting component; 42-Fixed base; 43-Adjusting screw; 44-Tension spring;

[0049] 5-Rolling element; 6-Locking rod; 7-Existing cable tray. Detailed Implementation

[0050] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0051] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0052] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0053] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0054] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0055] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0056] Example 1

[0057] like Figures 1 to 12 As shown, a universal cable tray includes a longitudinal frame, a transverse frame, and a flexible sheath 3.

[0058] The length of the longitudinal skeleton is set along a first direction. The longitudinal skeleton is divided into at least two longitudinal segments 11 along the first direction. Two adjacent longitudinal segments 11 are connected by a movable joint 12. The movable joint 12 includes at least two rotational degrees of freedom with axes perpendicular to the first direction, such as a rotational degree of freedom with an axis along a second direction and a rotational degree of freedom with an axis along a third direction. The first direction, the second direction and the third direction are perpendicular to each other. The rotational degrees of freedom of the movable joint 12 can be locked or unlocked.

[0059] At least one transverse frame is connected to each longitudinal segment 11. The transverse frame includes a bracket 21 and a support 22. The length of the bracket 21 is set along the second direction. The bracket 21 is used to support the cable. Its specific structure includes, but is not limited to, rod-shaped, plate-shaped or frame-shaped. Supports 22 are respectively set at both ends of the bracket 21 along the second direction. The length of the support 22 is set along the third direction. The support 22 is used to limit the position of the cable along the second direction and to open the flexible sheath 3. Its specific structure also includes, but is not limited to, rod-shaped, plate-shaped or frame-shaped.

[0060] The flexible sheath 3 is fitted over the longitudinal and transverse skeletons. The flexible sheath 3 has openings at both ends along the first direction to facilitate cable passage. The cross-sectional shape of the flexible sheath 3 is determined according to user requirements, including but not limited to groove, square tube, or round tube shapes. The material of the flexible sheath 3 includes but is not limited to metal or rubber. When using metal, the flexible sheath 3 can be made of thin (e.g., thickness ≤ 1.5 mm) aluminum plate or thin (e.g., thickness ≤ 2 mm) stainless steel plate, or the flexible sheath 3 can be woven with spring steel wire, or the flexible sheath 3 can be made with a corrugated structure (also known as a corrugated tube) so that the flexible sheath 3 can follow the longitudinal skeleton to turn. When using rubber, rubber with good fire resistance and wear resistance, such as neoprene rubber, fluororubber, or nitrile rubber, can be preferred.

[0061] exist Figures 1 to 12 Arrows are used to indicate the directions: arrow X represents the length direction of the longitudinal frame, i.e., the first direction; arrow Y represents the length direction of bracket 21, i.e., the second direction; and arrow Z represents the length direction of support 22, i.e., the third direction. It should be noted that because the longitudinal frame can bend (i.e., change direction), the first direction is not a constant straight line but may become a curve as the longitudinal frame bends, i.e., as shown below. Figure 10 As shown, the first direction may point differently at different parts of the longitudinal skeleton.

[0062] The universal cable tray of this embodiment includes an internal longitudinal frame and a transverse frame, as well as an external flexible sheath 3. Two adjacent longitudinal segments 11 in the longitudinal frame are connected by a movable joint 12. When the movable joint 12 is unlocked, the longitudinal frame can be bent into various shapes, such as right angles, C-shapes or U-shapes, by means of the rotational freedom of the movable joint 12, without the need for cutting, bending and welding operations. This allows its two ends to be connected to existing cable trays 7 with different orientations, or to bypass obstacles between two existing cable trays 7, thus achieving the function of bending in the prior art.

[0063] When the movable joint 12 is locked, the longitudinal skeleton and the transverse skeleton can form a rigid skeleton structure, thereby providing reliable support for the cable and preventing the cable from shaking or sagging due to insufficient rigidity of the cable tray, which would negatively affect the cable layout, cable life and the operation of the equipment connected to the cable.

[0064] When the longitudinal skeleton bends, the flexible sheath 3 can deform to the corresponding shape according to the longitudinal skeleton due to its flexibility, thereby maintaining its protective function for the cables; at the same time, the flexible sheath 3 can also cover the longitudinal and transverse skeletons, making the universal cable tray more aesthetically pleasing; and compared to setting up a complex layered structure on the flexible sheath 3 to adapt to the deformation of the longitudinal skeleton, the flexible sheath 3 can not only prevent the universal cable tray from being too heavy, but also make the appearance of the universal cable tray closer to that of ordinary rigid cable trays, thereby making the appearance of the entire cable tray system more harmonious.

[0065] In optional implementations, such as Figure 3 As shown, the longitudinal frame can be connected to the bracket 21 via the vertical connector 13. The length of the vertical connector 13 is set along the third direction. One end of the vertical connector 13 is connected to the longitudinal frame, and the other end of the vertical connector 13 is connected to the middle of the bracket 21, thereby ensuring the force balance on the left and right sides of the longitudinal frame. At the same time, the vertical connector 13 can also serve as a barrier for the cables on the left and right sides. The specific structural form of the vertical connector 13 includes, but is not limited to, rod-shaped, plate-shaped, or frame-shaped.

[0066] In optional implementations, such as Figure 4 As shown, the longitudinal frame can also be connected to at least one support frame 22 via a transverse connector 14; the length of the transverse connector 14 is set along the second direction, one end of the transverse connector 14 is connected to the longitudinal frame, and the other end of the transverse connector 14 is connected to the top of the support frame 22; compared with the vertical connector 13, the transverse connector 14 occupies less space under the longitudinal frame, which is beneficial for placing larger or more numerous cables; the specific structural form of the transverse connector 14 includes, but is not limited to, rod-shaped, plate-shaped or frame-shaped.

[0067] In an optional implementation, the number of transverse skeletons on each longitudinal segment 11 is at least two, and the transverse skeletons are distributed at intervals along the first direction, thereby reducing the span of the cable and making the cable more uniformly stressed.

[0068] In an optional embodiment, at least one side of the longitudinal frame along the first direction is further provided with a tensioning component 4. The tensioning component 4 includes a fixing member and an adjusting member 41. The fixing member is fixed relative to the longitudinal segment 11 located on the corresponding side of the longitudinal frame and closest to the end. For example, if the tensioning component 4 is provided at the tail of the longitudinal frame along the first direction, the fixing member is fixed relative to the longitudinal segment 11 closest to the tail. If the tensioning component 4 is provided at the head of the longitudinal frame along the first direction, the fixing member is fixed relative to the longitudinal segment 11 closest to the head. The adjusting member 41 is connected to the fixing member. The position of the adjusting member 41 along the first direction is adjustable. The corresponding end of the flexible sheath 3 is connected to the adjusting member 41, so that when the adjusting member 41 moves away from the center of the flexible sheath 3 along the first direction, the adjusting member 41 can form a tensioning effect on the flexible sheath 3.

[0069] In optional embodiments, the position adjustment of the adjusting member 41 can be achieved in various ways. For example, multiple mounting holes are provided at intervals on the fixing member along the first direction for the adjusting member 41, and the position of the adjusting member 41 along the first direction can be changed by connecting the adjusting member 41 to different mounting holes; or the adjusting member 41 and the fixing member are connected by a linear motion mechanism with at least one degree of freedom of movement (e.g., a lead screw and nut mechanism, a slide rail and slider mechanism, or a gear and rack mechanism), so that the adjusting member 41 can move directly along the first direction.

[0070] In this embodiment, a tensioning assembly 4 is provided near the end of the longitudinal frame, which can tighten the flexible sheath 3 by changing the position of the adjusting member 41; for example Figure 10 As shown, the tensioning flexible sheath 3 generates tension within the flexible sheath 3, pressing the flexible sheath 3 tightly against the transverse skeleton. This allows two adjacent transverse skeletons to press against each other along the first direction, thereby transferring the tension to the longitudinal skeleton and pressing adjacent longitudinal segments 11 against each other along the first direction. On one hand, this increases the maximum static friction between the components within the movable joint 12, thus strengthening the locking effect of the movable joint 12. On the other hand, when an external load attempts to make a longitudinal segment 11 swing around its movable joint 12, the external load not only needs to overcome the resistance first... The maximum static friction force inside the movable joint 12 is reduced, and the swing of the longitudinal segment 11 will further stretch the flexible sheath 3, thereby generating additional tension and corresponding torque within the flexible sheath 3. The tension and torque will increase as the swing angle of the longitudinal segment 11 increases, thereby suppressing the swing of the longitudinal segment 11. That is, the universal cable tray of this embodiment is less likely to sway under the action of loads (such as cable self-weight, wind load and seismic vibration), and can better adapt to high load occasions (such as heavy cables or large wind load occasions).

[0071] In addition, tensioning the flexible sheath 3 helps to eliminate wrinkles that may occur in the bent portion of the flexible sheath 3, thereby making the appearance of this embodiment more aesthetically pleasing.

[0072] It should be noted that at least one side of the longitudinal frame along the first direction is also provided with a tensioning component 4, which is only used to limit the position of the tensioning component 4 along the first direction and is not used to limit the tensioning component 4 to be connected to the longitudinal frame; for example, the fastener can be fixed to the longitudinal segment 11 at the end of the longitudinal frame, or to the transverse frame at the end, or to an existing structure (such as the ceiling, wall or existing cable tray 7 of an existing building structure).

[0073] In an optional embodiment, tensioning components 4 are provided on both sides of the longitudinal skeleton along the first direction, so that the flexible sheath 3 can be tensioned simultaneously from both ends of the flexible sheath 3.

[0074] In an optional embodiment, at least two tensioning components 4 are provided on each side of the longitudinal frame along the first direction. The tensioning components 4 are distributed circumferentially along the longitudinal frame to more evenly tension each part of the flexible sheath 3 and to adjust the tensioning effect of different parts of the flexible sheath 3 separately, thereby more precisely controlling the tension and the torque acting on the movable joint 12. For example, for Figure 1 and Figure 2 The grooved flexible sheath 3 shown has separate tensioning components 4 on its two side walls, and at least two tensioning components 4 are also spaced apart on its bottom surface along the second direction, so as to control the tensioning effect of different parts of the flexible sheath 3, thereby controlling the bending tendency of the longitudinal segment 11.

[0075] In an optional embodiment, the length of the flexible sheath 3 in its natural state is shorter than the distance between the tensioning components 4 at both ends along the first direction. When the two ends of the flexible sheath 3 are respectively connected to the tensioning components 4 on both sides, the flexible sheath 3 is in a stretched state, which can stably generate tension and also helps to prevent wrinkles from forming in the bending part of the flexible sheath 3.

[0076] In an optional embodiment, the fixing member includes a fixed base 42 and an adjusting screw 43; the fixed base 42 is fixed relative to the corresponding longitudinal segment 11, the adjusting screw 43 is threadedly connected to the fixed base 42, and the axis of the adjusting screw 43 is parallel to the first direction; the adjusting member 41 is slidably connected to the fixed base 42, the adjusting member 41 abuts against the end of the adjusting screw 43, and rotating the adjusting screw 43 can drive the adjusting member 41 to move along the first direction.

[0077] This embodiment provides one specific tensioning component 4 structure, which can change the position of the adjusting member 41 by rotating the adjusting screw 43, thereby adjusting the tensioning effect of the flexible sheath 3; and can also lock the position of the adjusting member 41 by the self-locking characteristic of the threaded connection.

[0078] In optional implementations, such as Figure 6 As shown, an elastic element is provided between the adjusting member 41 and the fixed base 42. The elastic element can drive the adjusting member 41 away from the flexible sleeve 3. The adjusting screw 43 abuts against the side of the adjusting member 41 away from the flexible sleeve 3. Rotating the adjusting screw 43 away from the flexible sleeve 3 can increase the tension effect of the adjusting member 41 on the flexible sleeve 3. Conversely, rotating the adjusting screw 43 closer to the flexible sleeve 3 can reduce the tension effect of the adjusting member 41 on the flexible sleeve 3.

[0079] This embodiment can, on the one hand, utilize an elastic element to provide the tension required for the flexible sheath 3; on the other hand, it allows the adjusting screw 43 to be positioned on the side of the adjusting member 41 away from the flexible sheath 3, enabling the operator to turn the adjusting screw 43 without interference from the flexible sheath 3. The specific form of the elastic element includes, but is not limited to, a tension spring, a compression spring, or a rubber block, as long as it can drive the adjusting member 41 away from the flexible sheath 3; for example... Figure 6 A tension spring 44 is provided between the adjusting member 41 on the side away from the flexible sheath 3 and the fixed base 42.

[0080] In optional implementations, such as Figure 6 As shown, each fixed base 42 is provided with at least two adjusting screws 43 to improve the reliability of the limiting effect of the adjusting screws 43 on the adjusting member 41; and the adjusting screws 43 can be distributed at intervals along a direction perpendicular to the first direction. For example, on the fixed base 42 connected to the bottom surface of the flexible sheath 3, the adjusting screws 43 are distributed at intervals along the second direction; on the fixed base 42 connected to the side wall of the flexible sheath 3, the adjusting screws 43 are distributed at intervals along the third direction to avoid the adjusting screws 43 encroaching on too much internal space of the universal cable tray; correspondingly, each fixed base 42 can also be provided with at least two tension springs 44, and the tension springs 44 can be further distributed at intervals along a direction perpendicular to the first direction.

[0081] In an optional embodiment, the flexible sheath 3 and the adjusting member 41 are detachably connected; the specific forms of detachable connection include, but are not limited to, threaded connection, snap-fit ​​connection or pin connection.

[0082] This embodiment allows workers to easily disconnect the flexible sheath 3 from the tensioning component 4 when installing the universal cable tray, and then fold the flexible sheath 3 to one end of the longitudinal frame to fully expose the longitudinal and transverse frames, thereby making it easier to adjust the longitudinal and transverse frames; and prevents the flexible sheath 3 from pressing adjacent longitudinal segments 11 and adjacent longitudinal and transverse frames together along the first direction during the installation stage, making it difficult for workers to bend the longitudinal frame.

[0083] In an optional embodiment, the end of the flexible sheath 3 is provided with a hook 33, and the adjusting member 41 is provided with a corresponding hook groove, and the hook 33 is inserted into the hook groove; there can be one or more hooks 33, so that the force on the flexible sheath 3 is more balanced.

[0084] In optional implementations, such as Figure 6As shown, the flexible sheath 3 has clamping plates 32 on both sides along its thickness direction at its end. The two clamping plates 32 clamp the flexible sheath 3 tightly. The hook 33 is connected to the clamping plates 32, so that the load on the hook 33 can be more evenly distributed to all parts of the flexible sheath 3 through the clamping plates 32, avoiding local stress concentration on the flexible sheath 3 and causing wear of the flexible sheath 3. The clamping plates 32 can clamp the flexible sheath 3 in a variety of ways, including but not limited to connection by threaded connectors, magnetic connection or spring connection.

[0085] In an optional embodiment, the tensioning component 4 is used to be installed inside the existing cable tray 7. This allows the existing cable tray 7 to provide an installation position for the tensioning component 4, and also allows the end of the flexible sheath 3 to be pulled into the interior of the existing cable tray 7, thereby achieving the overlap between the flexible sheath 3 and the existing cable tray 7, avoiding the appearance of seams between the flexible sheath 3 and the existing cable tray 7, and preventing the tensioning component 4, the end of the flexible sheath 3, and the hook 33 from being exposed.

[0086] In an optional embodiment, at least one support 22 is position-adjustable along the second direction, so that two supports 22 on the same bracket 21 can move closer to or further away from each other along the second direction.

[0087] The position adjustment of the support 22 can be achieved in a variety of ways. For example, multiple mounting holes are provided at intervals along the second direction on the bracket 21 for the support 22, and the position of the support 22 along the second direction can be changed by connecting the support 22 to different mounting holes; or the support 22 and the bracket 21 are connected by a linear motion mechanism with at least one degree of freedom of movement (such as a lead screw and nut mechanism, a slide rail and slider mechanism, or a gear and rack mechanism), so that the support 22 can move directly along the second direction.

[0088] This embodiment can tension the flexible sheath 3 along the second direction by moving the two supports 22 closer together or further apart, thereby achieving... Figure 12 As shown, the overall width (dimension along the second direction) of the universal cable tray can be adjusted (i.e., the industry term "diameter change") to facilitate the connection of two existing cable trays with different widths 7.

[0089] In an optional embodiment, when the end of the flexible sheath 3 is also connected to the tensioning component 4, the supports 22 on both sides of the bracket 21 are movably connected to the bracket 21, thereby achieving the width adjustment function mentioned above, and also adjusting the distance from the two supports 22 to the central axis of the longitudinal frame, thereby adjusting the lever arm of the tension on both sides of the longitudinal frame, so as to make the force on the longitudinal frame more balanced, or to give the longitudinal frame a specific bending tendency so that it can better resist the load in a specific direction.

[0090] For example Figure 10As shown, when two adjacent longitudinal segments 11 swing relative to each other around the Z-axis, the flexible sheath 3 will generate tensile forces F1 and F2 at both ends of the transverse skeleton along the Y-axis, respectively. Since the tensile force of the flexible sheath 3 on the F2 side is greater than that on the F1 side, F2 will be greater than F1. Furthermore, F2 and F1 will be transmitted to the longitudinal skeleton through the transverse skeleton, which will lead to an imbalance of forces on both sides of the longitudinal skeleton, causing the longitudinal skeleton to tend to bend towards the F2 side. In this case, when installing the universal cable tray, the supports 22 on both sides of the bracket 21 can be moved towards the F1 side simultaneously relative to the bracket 21. This will increase the distance from the support 22 on the F1 side to the central axis of the longitudinal skeleton and decrease the distance from the support 22 on the F2 side to the central axis of the longitudinal skeleton, thereby increasing the lever arm of F1 and decreasing the lever arm of F2, thus alleviating or even eliminating the imbalance of forces on the longitudinal skeleton.

[0091] Alternatively, if the staff discovers during the initial design phase that an external load Q will act on one of the longitudinal segments 11 after the universal cable tray is installed, causing the longitudinal segment 11 to tend to bend towards F2 around its movable joint 12, then during the installation of the universal cable tray, the supports 22 on both sides of the bracket 21 can be moved simultaneously towards F1 relative to the bracket 21. This increases the distance from the support 22 on the F1 side to the central axis of the longitudinal frame, and decreases the distance from the support 22 on the F2 side to the central axis of the longitudinal frame. This increases the lever arm of F1 and decreases the lever arm of F2, causing the longitudinal frame to tend to swing in the opposite direction towards F1, thereby mitigating or even completely offsetting the influence of the external load Q.

[0092] In an optional embodiment, the bracket 21 is provided with a sliding groove at both ends along the second direction, and a sliding rod is slidably connected in the sliding groove. The lengths of the sliding groove and the sliding rod are both set along the second direction. The support 22 is connected to the end of the sliding rod away from the sliding groove. A threaded through hole is provided on one side of the sliding groove, and the axis of the threaded through hole is perpendicular to the second direction. A locking screw is connected in the threaded through hole. Rotating the locking screw can move the locking screw along the threaded through hole, thereby pressing against or moving away from the sliding rod to lock or unlock the degree of freedom of movement of the sliding rod, and thus unlock or lock the degree of freedom of movement of the support 22.

[0093] In an optional embodiment, a threaded through hole is provided on one side of the slide groove along the first direction, and the axis of the threaded through hole is provided along the first direction to reduce the encroachment of the locking screw on the internal space of the flexible sheath 3.

[0094] In an optional embodiment, the top of the flexible sheath 3 has an opening; the top of the support 22 is movably connected to a gripper 221, the movable connection including but not limited to a swing connection or a sliding connection, so that the gripper 221 can move closer to or away from the support 22, thereby clamping the side wall at the opening of the flexible sheath 3 between the support 22 and the gripper 221, or releasing the flexible sheath 3.

[0095] When the top of the flexible sheath 3 is open, i.e., when the flexible sheath 3 is a groove-shaped component, the flexible sheath 3 may detach from the bottom of the longitudinal and transverse frames under the action of gravity. Therefore, in this embodiment, a clamp 221 is provided on the top of the support 22. The flexible sheath 3 is clamped to the support 22 by the clamp 221, thereby preventing the flexible sheath 3 from detaching downwards. At the same time, it can also limit the flexible sheath 3, so that the flexible sheath 3 can fit more closely to the transverse frame.

[0096] In an optional embodiment, an elastic member 222 is provided between the gripper 221 and the support frame 22. The elastic member 222 can drive the gripper 221 to approach the support frame 22, thereby clamping the flexible sheath 3. The specific form of the elastic member 222 includes, but is not limited to, a tension spring, a compression spring, or a rubber block, as long as it can drive the gripper 221 to clamp the flexible sheath 3.

[0097] In an optional embodiment, a rolling element 5 is provided on the side of the gripper 221 facing the flexible sheath 3, thereby preventing the flexible sheath 3 and the gripper 221 from cutting each other when relative displacement occurs between them; the specific form of the rolling element 5 includes, but is not limited to, balls, rollers, tapered rollers or wheels; the number of rolling elements 5 can be one or more.

[0098] In an optional embodiment, a limiting protrusion 31 is provided on the side wall of the opening of the flexible sheath 3 facing the gripper 221. The length of the limiting protrusion 31 is set along the first direction, and the limiting protrusion 31 is located above the rolling element 5 of the gripper 221 (on the side away from the bracket 21) along the third direction. This allows the contact between the limiting protrusion 31 and the rolling element 5 of the gripper 221 to further prevent the flexible sheath 3 from falling off.

[0099] The limiting protrusion 31 can be an independent component that is later connected to the flexible sheath 3, such as an iron wire inserted into the flexible sheath 3 or a silicone strip riveted to the outside of the flexible sheath 3; or it can be directly integrally formed with the flexible sheath 3; the limiting protrusion 31 can be set along the entire length of the flexible sheath 3 in the first direction, or it can be set only near the gripper 221, as long as it can maintain contact with the rolling body 5 of the gripper 221.

[0100] In optional embodiments, the specific form of the movable joint 12 includes, but is not limited to, a ball joint, or a composite joint composed of two or more single-axis hinges; the locking or unlocking method of the movable joint 12 includes, but is not limited to: a joint using a built-in locking mechanism, such as a joint with a built-in ratchet lock, pin lock, or friction locking mechanism; or locking the movable joint 12 using an external locking mechanism, such as connecting an external locking rod 6 between two adjacent longitudinal segments 11 so that the two adjacent longitudinal segments 11 and the locking rod 61 together form a linkage mechanism with 0 degrees of freedom.

[0101] In an optional embodiment, the movable joint 12 is preferably a ball joint. Compared with other forms of movable joint 12, such as a composite joint composed of two single-axis hinges, the structure of this embodiment is simpler and is conducive to improving the manufacturing and assembly efficiency of the universal cable tray.

[0102] In an optional embodiment, the ball joint includes a ball seat 121, a locking knob 122, and a ball head 123; the ball seat 121 is disposed at the end of one longitudinal segment 11, and the ball seat 121 opens toward one end of another longitudinal segment 11; the side wall of the ball seat 121 is provided with at least one slit 1211, the slit 1211 is disposed along a first direction, and one end of the slit 1211 communicates with the opening of the ball seat 121; an external threaded section is provided on the side wall of the ball seat 121 surrounding the opening of the ball seat 121, the locking knob 122 is threadedly connected to the external threaded section, and the locking knob 122 has an opening in the middle; the ball head 123 is disposed at the end of another longitudinal segment 11, the ball head 123 passes through the opening of the locking knob 122 and is nested in the ball seat 121.

[0103] This embodiment provides one specific ball joint structure, wherein the end of the ball seat 121 near the opening is divided into at least two halves by a slit 1211, and the locking knob 122 is fastened to the opening through an external thread section on the outside of the opening; therefore, when the locking knob 122 is tightened to the external thread section, the locking knob 122 will constrain the structure of each half of the ball seat 121 radially along the opening, so that the halves of the ball seat 121 move closer to each other (the width of the slit 1211 decreases), thereby clamping the ball head 123, which can significantly increase the static friction between the ball head 123 and the ball seat 121 to lock the swing freedom of the two adjacent longitudinal segments 11 and prevent the longitudinal frame from causing the cable to swing without restraint; when it is necessary to adjust the swing angle of the two adjacent longitudinal segments 11, the locking knob 122 is removed from the external thread section, so that the halves of the ball seat 121 move away from each other (the width of the slit 1211 is restored), thereby releasing the ball head 123, so that the ball head 123 can swing freely relative to the ball seat 121.

[0104] In an optional embodiment, a rubber layer is provided on the side of the ball seat 121 facing the ball head 123 to increase the maximum static friction between the ball seat 121 and the ball head 123, thereby improving the holding force of the movable joint 12 in the locked state and thus improving the stability of the universal cable tray; the rubber layer can be a coating or a gasket connected to the ball seat 121.

[0105] In an optional embodiment, the length of at least one longitudinal segment 11 along the first direction is adjustable; the specific length adjustment method can be achieved by existing technology, such as dividing the longitudinal segment 11 into at least two segments, with adjacent segments threaded together, or connected by a linear motion mechanism with at least one degree of freedom of movement (e.g., a lead screw and nut mechanism, a slide rail and slider mechanism, or a gear and rack mechanism), so that adjacent segments can move closer to or further away from each other, thereby achieving overall length adjustment of the longitudinal segment 11, and further achieving overall length adjustment of the longitudinal skeleton.

[0106] This embodiment allows for adjustment of the length of the longitudinal frame, thereby adapting to connection scenarios of existing cable trays 7 with different spacing, and further enhancing the adaptability of the universal cable tray to different connection scenarios.

[0107] In an optional embodiment, since the ends of the longitudinal skeleton need to directly bear the tension generated by the tensioning of the flexible sheath 3, the adjustable-length longitudinal segment 11 can be set close to the middle of the longitudinal skeleton to avoid its extension and contraction movements interfering with the tensioning movements of the flexible sheath 3.

[0108] In an optional embodiment, a hanger is connected to the longitudinal frame, with one end of the hanger facing away from the longitudinal frame for connection to an existing building structure (e.g., a ceiling or beam of a house); and / or, a hanger is connected to the transverse frame, the hanger being a readily available product, with one end of the hanger facing away from the transverse frame for connection to an existing building structure (e.g., a ceiling or beam).

[0109] In this embodiment, the hangers are connected to rigid longitudinal and / or transverse frames. On the one hand, this ensures reliable connection between the universal cable tray and the existing building structure. On the other hand, since the hangers are directly connected to the existing building structure, the relative positions of each hanger are determined. Therefore, connecting the hangers to the longitudinal and / or transverse frames can also limit the relative positions of adjacent longitudinal and / or transverse frames, thereby improving the stability of this embodiment.

[0110] In an optional embodiment, at least one locking lug 124 is provided on the longitudinal segment 11. The locking lug 124 extends in a direction perpendicular to the first direction, such as extending in the second direction or in the third direction, to prevent the locking rod 6 or locking rope mentioned later from interfering with the longitudinal segment 11. The locking rod 6 or locking rope is detachably connected between the locking lugs 124 of two adjacent longitudinal segments 11. When the locking rod 6 or locking rope is removed, the two adjacent longitudinal segments 11 can swing freely relative to each other. When the locking rod 6 or locking rope is installed, the swing freedom between the two adjacent longitudinal segments 11 is locked.

[0111] This embodiment can help lock or release the swing freedom between two adjacent longitudinal segments 11, thereby preventing the longitudinal frame from shaking without restraint after the universal cable tray construction is completed, and avoiding the locking rod 6 or locking rope from hindering the adjustment of the longitudinal frame during the construction of the universal cable tray.

[0112] Since the relative swing of two adjacent longitudinal segments 11 will cause the distance and relative angle of adjacent locking lugs 124 to change, when the locking rod 6 is detachably connected between adjacent locking lugs 124, the locking rod 6 with corresponding length and corresponding joint can be prefabricated according to the swing angle of the adjacent longitudinal segments 11, or a fisheye joint (also known as a spherical bearing) can be set on the locking lug 124, or a fisheye joint can be set at both ends of the locking rod 6; and correspondingly, a locking rod 6 with adjustable length and self-locking capability, such as a turnbuckle or a threaded telescopic rod, can be used.

[0113] When a locking rope is detachably connected between adjacent locking ear plates 124, the locking rope can be connected to the locking ear plate 124 by means of a buckle or wrapping. Therefore, there is no need to pay attention to the relative angle change of the locking ear plates 124, only to the distance change of the locking ear plates 124. As for the distance change, the length of the locking rope can be adjusted by changing the wrapping method of the locking rope to adapt to the distance change of the locking ear plates 124, or an adjustable length locking rope can be used directly, such as an adjustable cable.

[0114] In an optional embodiment, two or more locking lugs 124 can be provided on each longitudinal segment 11 to prevent the longitudinal segment 11 from swinging away from the locking lugs 124, which would cause the locking rod 6 or locking rope to interfere with the longitudinal segment 11 when connecting the locking lugs 6 or locking rope between adjacent locking lugs 124. For example, locking lugs 124 can be provided on both the left and right sides of the longitudinal segment 11 along the second direction, so that when the longitudinal segment 11 bends to the right, the locking rod 6 or locking rope can be connected between the locking lugs 124 on the right side; when the longitudinal segment 11 bends to the left, the locking rod 6 or locking rope can be connected between the locking lugs 124 on the left side. Of course, when space permits, locking rods 6 or locking ropes can also be connected on both the left and right sides. Alternatively, the locking lugs 124 can be rotatably connected to the longitudinal segment 11, with the axis of rotation along the first direction, so that the position of the locking lugs 124 can be switched according to the swing direction of the longitudinal segment 11 for subsequent connection of the locking rod 6 or locking rope.

[0115] In an optional embodiment, a rolling element 5 is provided on the side of the transverse skeleton facing the flexible sheath 3, thereby preventing the flexible sheath 3 and the transverse skeleton from cutting each other when relative displacement occurs between them; the specific form of the rolling element 5 includes, but is not limited to, balls, rollers, tapered rollers or wheels; the number of rolling elements 5 can be one or more.

[0116] Example 2

[0117] An installation method for a universal cable tray, applied to a universal cable tray of Embodiment 1, includes the following steps:

[0118] S1. Connect the two ends of the longitudinal skeleton along the first direction to the two existing cable trays 7 respectively, and / or connect the transverse skeletons located at the two ends to the two existing cable trays 7 respectively; and bend the longitudinal skeleton into a specified shape through the movable joint 12.

[0119] S2. Place the cable above the bracket 21, with the cable positioned between the two side supports 22 along the second direction.

[0120] S3. Connect the two ends of the flexible sheath 3 to the existing cable tray 7 at the corresponding ends respectively; the ends of the flexible sheath 3 can be connected to the outside of the existing cable tray 7 or to the inside of the existing cable tray 7.

[0121] The installation method of the universal cable tray in this embodiment utilizes the universal cable tray in Embodiment 1, which can connect two sections of cable trays facing different directions, or cable trays with obstacles on the end connection line, without cutting, bending and welding operations. This can greatly improve the construction efficiency of the cable tray system and reduce the dependence of cable tray construction on site conditions.

[0122] In optional embodiments, the connection methods between the longitudinal frame and the existing cable tray 7 include, but are not limited to, threaded connections or welding connections; similarly, the connection methods between the transverse frame and the existing cable tray 7 include, but are not limited to, threaded connections or welding connections; it should be noted that, in Figure 1 The longitudinal skeleton does not extend into the existing cable tray 7 in order to better observe the tensioning component 4, thus concealing the longitudinal and transverse skeletons that extend into the existing cable tray 7. However, in actual construction, in order to better connect this universal cable tray with the existing cable tray 7, it is recommended that there be a certain overlap length between the universal cable tray and the existing cable tray 7. For example, the universal cable tray extends into the existing cable tray 7 by a certain distance, or conversely, the existing cable tray 7 extends into the universal cable tray by a certain distance.

[0123] In an optional implementation, the bending of the longitudinal skeleton includes one or more of the following bending methods:

[0124] A. As Figure 10 As shown, two adjacent longitudinal segments 11 oscillate relative to each other around the Z-axis.

[0125] B, such as Figure 11 As shown, two adjacent longitudinal segments 11 oscillate relative to each other around the Y-axis.

[0126] That is, the longitudinal skeleton can be bent horizontally, vertically, or both simultaneously; and different longitudinal segments 11 can have different bending directions.

[0127] In an optional implementation, in S1, the flexible sheath 3 can be completely gathered at one end of the longitudinal frame to fully expose the longitudinal and transverse frames, thereby facilitating the adjustment of the longitudinal and transverse frames by the staff; if the flexible sheath 3 is a groove-shaped structure with an open top surface, the flexible sheath 3 can be not installed in S1, and then installed in S3.

[0128] In an optional embodiment, when the universal cable tray includes a tensioning component 4, the flexible sheath 3 may not be connected to the tensioning component 4 in S1; or when tensioning components 4 are provided at both ends of the flexible sheath 3, the flexible sheath 3 may only be connected to the tensioning component 4 at one end; so as to avoid the elasticity of the flexible sheath 3 from hindering the bending of the longitudinal frame.

[0129] In an optional embodiment, when the position of the support 22 relative to the bracket 21 is adjustable and the widths of the two existing cable trays 7 are different, in S1 the position of each support 22 along the second direction is also adjusted so that the spacing between the supports 22 at both ends of the longitudinal frame matches the widths of the two existing cable trays 7 respectively.

[0130] In an optional embodiment, when the positions of the supports 22 on both sides of the bracket 21 are adjustable, S1 further includes the following steps:

[0131] S11. Design the bending shape of the longitudinal frame based on the relative positional relationship between the two existing cable trays 7.

[0132] S12. Calculate the torque at each movable joint 12 based on the bending shape of the longitudinal skeleton and the characteristics of the flexible sheath 3. The characteristics of the flexible sheath 3 include the length of the flexible sheath 3 in its natural state, the length of the flexible sheath 3 after bending with the longitudinal skeleton or the length of the flexible sheath 3 after being tensioned by the tensioning component 4, and the elastic coefficient of the flexible sheath 3.

[0133] S13. Determine whether the torque at each movable joint 12 meets the design requirements, such as whether the torque is less than or equal to the preset threshold, or whether the torque at a certain point matches the expected external load. If it does not meet the design requirements, change the position of the two side supports 22, and / or adjust the position of the adjusting parts 41 in each tensioning component 4 as a whole or separately, and repeat S11 to S13. If it meets the design requirements, the design is completed. In subsequent steps, the longitudinal skeleton is bent and the position of the supports 22 is adjusted according to the design results.

[0134] In an optional embodiment, when the universal cable tray includes a tensioning component 4, the flexible sheath 3 can also be tensioned through the tensioning component 4 in S3, thereby generating tension between adjacent transverse frames and between adjacent longitudinal segments 11, thus enhancing the stability of the universal cable tray; when multiple tensioning components 4 are connected to the end of the flexible sheath 3, the tension amplitude of all tensioning components 4 can be adjusted as a whole, or different tension amplitudes can be set for different tensioning components 4 to actively control the torque inside the universal cable tray.

[0135] Example 3

[0136] A cable tray system includes several rigid cable trays, such as trough-shaped or tubular cable trays assembled from aluminum alloy sheet metal parts or stainless steel sheet metal parts, and at least two rigid cable trays are connected by a universal cable tray as described in Embodiment 1; for example, when there is a non-zero included angle between two rigid cable trays, the two rigid cable trays can be connected by the universal cable tray; or when there is an obstacle blocking the two rigid cable trays, the universal cable tray can cross the obstacle and connect the two rigid cable trays.

[0137] The cable tray system in this embodiment combines existing rigid cable trays and universal cable trays. In most areas, such as straight areas, mature rigid cable trays are used, while universal cable trays are used only in a few areas, such as corner areas or areas that need to be crossed. This can reduce the manufacturing cost of the entire cable tray system and ensure structural strength by utilizing mature rigid cable trays, while using universal cable trays to achieve the turning and crossing of the cable trays without cutting, bending and welding. This can improve the construction efficiency of the cable tray system and reduce the dependence of the construction of the cable tray system on site conditions.

[0138] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A universal cable tray, characterized in that, include: A longitudinal skeleton, the length of which is set along a first direction, the longitudinal skeleton is divided into at least two longitudinal segments (11) along the first direction, two adjacent longitudinal segments (11) are connected by a movable joint (12), the movable joint (12) includes at least two rotational degrees of freedom with the axis perpendicular to the first direction, and the rotational degrees of freedom of the movable joint (12) can be locked or unlocked; A transverse frame is provided, with at least one transverse frame connected to each of the longitudinal segments (11). The transverse frame includes a bracket (21) and a support (22). The length of the bracket (21) is set along a second direction, and the support (22) is provided at both ends of the bracket (21) along the second direction. The length of the support (22) is set along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other. A flexible sheath (3) is fitted over the longitudinal skeleton and the transverse skeleton, and the flexible sheath (3) has openings at both ends along the first direction; The flexible sheath (3) has an opening at the top; the top of the support frame (22) is movably connected to a gripper (221), which can move closer to or further away from the support frame (22) to clamp the flexible sheath (3) between the support frame (22) and the gripper (221) or release the flexible sheath (3). At least one side of the longitudinal skeleton along the first direction is provided with a tensioning component (4), the tensioning component (4) includes a fixing member and an adjusting member (41); the fixing member is fixed relative to the longitudinal segment (11) located on the corresponding side of the longitudinal skeleton and closest to the end; the adjusting member (41) is connected to the fixing member, the position of the adjusting member (41) along the first direction is adjustable, and the corresponding end of the flexible sheath (3) is connected to the adjusting member (41).

2. A universal cable tray according to claim 1, characterized in that, The fixing component includes a fixed base (42) and an adjusting screw (43); the fixed base (42) is fixed relative to the corresponding longitudinal segment (11), the adjusting screw (43) is threadedly connected to the fixed base (42), and the axis of the adjusting screw (43) is parallel to the first direction; the adjusting component (41) is slidably connected to the fixed base (42), the adjusting component (41) abuts against the end of the adjusting screw (43), and rotating the adjusting screw (43) can drive the adjusting component (41) to move along the first direction.

3. A universal cable tray according to claim 1, characterized in that, The flexible sheath (3) is detachably connected to the adjusting member (41).

4. A universal cable tray according to any one of claims 1 to 3, characterized in that, At least one of the supports (22) is position-adjustable in the second direction, so that two supports (22) on the same bracket (21) can move closer to or further away from each other in the second direction.

5. A universal cable tray according to claim 1, characterized in that, The gripper (221) has a rolling element (5) on the side facing the flexible sheath (3).

6. A universal cable tray according to any one of claims 1 to 3, characterized in that, The movable joint (12) includes a ball joint.

7. A universal cable tray according to claim 6, characterized in that, The ball joint includes a ball seat (121), a locking knob (122), and a ball head (123); the ball seat (121) is disposed at the end of one of the longitudinal segments (11), and the ball seat (121) opens toward one end of another of the longitudinal segments (11); the side wall of the ball seat (121) is provided with at least one slit (1211), the slit (1211) is disposed along a first direction, and one end of the slit (1211) is connected to the ball seat. The opening of (121) is connected; an external thread section is provided on the side wall of the ball seat (121) surrounding the opening of the ball seat (121), the locking knob (122) is threadedly connected to the external thread section, and the locking knob (122) has an opening in the middle; the ball head (123) is provided at the end of another longitudinal segment (11), the ball head (123) passes through the opening of the locking knob (122) and is nested in the ball seat (121).

8. A universal cable tray according to any one of claims 1 to 3, characterized in that, The length of at least one of the longitudinal segments (11) is adjustable.

9. A universal cable tray according to any one of claims 1 to 3, characterized in that, Hangers are connected to the longitudinal frame, and / or hangers are connected to the transverse frame.

10. A universal cable tray according to any one of claims 1 to 3, characterized in that, At least one locking lug (124) is provided on the longitudinal segment (11), the locking lug (124) extends in a direction perpendicular to the first direction, and a locking rod (6) or locking rope is detachably connected between the locking lugs (124) of two adjacent longitudinal segments (11).

11. A universal cable tray according to any one of claims 1 to 3, characterized in that, The side of the transverse skeleton facing the flexible sheath (3) is provided with a rolling element (5).

12. A method for installing a universal cable tray, characterized in that, The application of a universal cable tray according to any one of claims 1 to 11 includes the following steps: S1. Connect the two ends of the longitudinal skeleton along the first direction to the two existing cable trays (7) respectively, and / or connect the transverse skeletons located at the two ends to the two existing cable trays (7) respectively; bend the longitudinal skeleton into a specified shape through the movable joint (12); S2. Place the cable above the bracket (21); S3. Connect the two ends of the flexible sheath (3) to the existing cable tray (7) at the corresponding ends.

13. The installation method of a universal cable tray according to claim 12, characterized in that, When the universal cable tray includes a tensioning assembly (4), S3 also includes the following steps: The flexible sheath (3) is tensioned by the tensioning component (4).

14. A cable tray system, comprising a rigid cable tray, characterized in that, At least two of the rigid cable trays are connected by a universal cable tray as described in any one of claims 1 to 11.

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