A cable tray with adjustable size

Abstract

The present invention relates to the field of cable trays, specifically to a size-adjustable cable tray, including a unit tray assembly, the unit tray assembly including: a first bottom plate and a second bottom plate for bottom supporting cables, a rear vertical plate and a front vertical plate with adjustable spacing; a left adjustment plate and a right adjustment plate with adjustable angles; a cable clamping assembly is provided on the left adjustment plate, and the tension of the cable is adaptively adjusted according to the angle changes of the left adjustment plate and the right adjustment plate; a connecting bar is provided on the rear vertical plate, and an upper limit rod is provided on the connecting bar, and the connecting bar is driven up and down by a longitudinal drive assembly, and the assembly requirements of cables of different diameters are adapted by adjusting the height of the upper limit rod; the various adjustment components of the present invention are simple to operate, and can quickly complete the adjustment of the tray size and angle without the need for complex tools and tedious operations, thereby greatly saving construction time and labor costs and improving construction efficiency.

Description

Technical Field

[0001] The invention relates to the field of cable bridges, in particular to a cable bridge with adjustable size. Background Art

[0002] Cable trays are key load-bearing structures in power, communications, and building wiring systems. Their ease of installation and path adaptability directly impact project efficiency and subsequent maintenance costs. While traditional cable tray systems can achieve angled connections through prefabricated elbows, tees, and other components, their fixed design still presents the following technical shortcomings in complex wiring scenarios:

[0003] 1. Traditional cable tray connectors, such as elbows and tees, are typically fixed-angle and must be customized in advance according to design drawings. When on-site cable routing changes due to structural deviations or temporary adjustments, fixed-angle components cannot be flexibly adapted and must be re-customized or cut and reconstructed on-site, resulting in construction delays and material waste.

[0004] 2. Secondly, when the number of cables increases or the cable diameter changes, the existing bridge cannot be flexibly adjusted in cross-sectional dimensions, requiring the entire bridge to be replaced or a new one to be added, resulting in wasted resources and increased installation complexity. Summary of the Invention

[0005] The object of the present invention is to provide a cable tray with adjustable size to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a size-adjustable cable tray, comprising two or more unit tray assemblies spliced ​​together, wherein the unit tray assemblies include:

[0007] The first bottom plate and the second bottom plate overlap each other and are used to support the cables. The ends of the first bottom plate and the second bottom plate that are away from each other are provided with a rear vertical plate and a front vertical plate in sequence;

[0008] An upper baffle, overlapped on the rear vertical plate and the front vertical plate;

[0009] The first base plate is driven by the transverse drive assembly and slides linearly on the Z axis relative to the second base plate. The spacing between the rear and front vertical plates is adjusted to accommodate the different widths of cable assemblies.

[0010] The rear vertical plate and the front vertical plate are both provided with a left adjustment plate and a right adjustment plate, which are rotated together and locked by an axial tightening assembly;

[0011] The left adjustment plate is provided with a cable clamping assembly, which can adaptively adjust the cable tension according to the angle changes of the left and right adjustment plates;

[0012] A connecting bar is provided on the rear vertical plate, and an upper limit rod is provided on the connecting bar. The connecting bar is driven up and down by the longitudinal drive assembly. The height of the upper limit rod is adjusted to meet the assembly requirements of cables with different diameters.

[0013] Preferably, the left adjustment plate and the right adjustment plate have an up and down rotation range of 0-90°;

[0014] The axial tightening assembly includes a fixed screw and a first adjusting screw sleeve;

[0015] The fixing screw is arranged on the left adjusting plate, and a round hole for accommodating the fixing screw is opened on the right adjusting plate. The first adjusting screw sleeve is screwed on the fixing screw and contacts the right adjusting plate.

[0016] Preferably, the cable clamping assembly includes:

[0017] The longitudinal movable seat moves up and down on the left adjustment plate;

[0018] The adjusting pressure rod is slidably mounted on the longitudinal movable seat and locked by the limit assembly;

[0019] The support rod is arranged opposite to the adjusting pressure rod and is installed on the longitudinal movable seat for limited rotation.

[0020] Preferably, the cable clamping assembly further includes:

[0021] The movable frame is limitedly slidably installed in the left adjustment plate and fixedly connected to the longitudinal movable seat;

[0022] The cylindrical slider is eccentrically arranged on the side wall of the right adjustment plate. A 180° arc groove is opened on the side wall of the left adjustment plate. The cylindrical slider passes through the arc groove and is movably inserted in the moving frame.

[0023] Preferably, the limiting component includes:

[0024] The clamping block moves up and down in the longitudinal movable seat;

[0025] The Z-axis stud has one end fixedly connected to the clamping block and the other end rotatably connected to the adjusting lever;

[0026] The second adjusting screw sleeve is sleeved on the Z-axis screw and contacts the side wall connected to the longitudinal movable seat.

[0027] Preferably, the support rod is rotatably matched with the longitudinal movable seat, and the first bottom plate and the second bottom plate are commonly connected to at least two sets of matching roller rods;

[0028] The matching roller rod, the upper limit rod, the adjusting pressure rod and the supporting rod are all telescopic rods.

[0029] Preferably, the longitudinal drive assembly includes a linkage seat, a longitudinal drive screw, a longitudinal adjustment handle and a wedge block, and the connecting bar is limitedly rotatably mounted on the linkage seat;

[0030] The wedge block is slidably mounted on the linkage seat through an elastic component to limit the upper end of the connecting bar.

[0031] Preferably, the linkage seat is limitedly slidably mounted on the rear vertical plate, and an internal screw hole is opened in the middle of the linkage seat;

[0032] One end of the longitudinal driving screw is fixedly connected to the longitudinal adjusting handle, and the other end of the longitudinal driving screw extends from the bottom of the rear vertical plate and is inserted into the inner screw hole.

[0033] Preferably, a central shaft is fixedly inserted at the end of the connecting bar, a spur gear is fixedly sleeved on the central shaft, and the spur gear is meshedly connected to the vertical gear plate;

[0034] The side of the vertical tooth plate away from the spur gear is fixedly connected to the limit block, and the side wall of the linkage seat is provided with a dovetail-shaped sliding groove for accommodating the limit block;

[0035] A No. 1 spring is arranged on the bottom wall of the dovetail chute, and the upper end of the No. 1 spring is fixedly connected to the limit block.

[0036] Preferably, a narrow slot is further provided on the side wall of the linkage seat, and the wedge-shaped block extends into the narrow slot and is connected to the elastic component;

[0037] The elastic component is a No. 2 spring;

[0038] Preferably, the side wall of the rear vertical plate is provided with a rectangular slot for accommodating the connecting bar, and both sides of the rectangular slot are recessed with a narrow and long sliding slot that matches the central axis;

[0039] When the connecting bar moves upward, the wedge block is squeezed by the top wall of the rectangular slot before the vertical tooth plate and shrinks into the narrow slot, while the vertical tooth plate is squeezed downward by the top wall of the rectangular slot after the wedge block.

[0040] Preferably, the transverse drive assembly includes a transverse adjustment handle, a screw nut and a transverse screw, the screw nut is fixedly arranged on the side wall of the first base plate, and the first base plate is provided with a cylindrical cavity for accommodating the transverse screw;

[0041] One end of the transverse lead screw is fixedly connected to the transverse adjustment handle, and the other end of the transverse lead screw sequentially passes through the front vertical plate, the second base plate and the lead screw nut and extends into the cylindrical cavity.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. This invention utilizes a transverse drive assembly. Rotating the transverse adjustment handle drives the transverse lead screw, which then drives the first base plate to slide linearly along the Z axis relative to the second base plate. This allows for convenient and quick adjustment of the spacing between the rear and front uprights, accommodating the diverse width requirements for laying different numbers of cables and improving the bridge's suitability for complex wiring scenarios. Furthermore, the longitudinal drive assembly allows the connecting bar to move up and down, driving the height adjustment of the upper limit rod. This adapts to the assembly requirements of cables of varying diameters, ensuring stable and effective position limiting for all types of cables.

[0044] 2. The left and right adjustment plates on the rear and front vertical panels of this invention cooperate with an axially abutting assembly to achieve vertical rotation from 0 to 90 degrees. This allows for flexible routing around obstacles such as pipes and equipment, meeting the wiring needs of complex building structures or temporary route changes, greatly improving wiring flexibility and feasibility.

[0045] 3. The cable retaining assembly, installed on the left adjustment plate, comprises a longitudinally movable seat, an adjustment lever, and other components. This adaptively adjusts cable tension as the angles of the left and right adjustment plates change, providing cable length compensation and preventing cable tension caused by bridge angle adjustments. This ensures the cable's physical integrity and extends its service life.

[0046] 4. The present invention's simple adjustment components, such as horizontal width adjustment, vertical height adjustment, and angle adjustment, allow construction workers to quickly adjust the bridge's dimensions and angles without the need for complex tools or tedious operations. This significantly saves construction time and labor costs, improving construction efficiency. Furthermore, during maintenance, cable inspection and replacement are easily accessible, reducing maintenance workload and time, and enhancing the system's maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 Schematic diagram of the installation of the structure of the present invention.

[0048] Figure 2 It is a three-dimensional schematic diagram of the unit bridge assembly of the present invention.

[0049] Figure 3 It is a schematic diagram of the assembly of the unit bridge component of the present invention.

[0050] Figure 4 This is a schematic diagram of the unit bridge assembly of the present invention without the upper baffle.

[0051] Figure 5 It is a schematic cross-sectional view of the rear vertical plate and the front vertical plate of the present invention.

[0052] Figure 6 It is a schematic cross-sectional view of the first bottom plate and the second bottom plate of the present invention.

[0053] Figure 7 Schematic diagram of the explosion of the first base plate, the second base plate and the transverse drive assembly of the present invention.

[0054] Figure 8 It is a schematic diagram of the connection between the linkage seat and the longitudinal drive assembly of the present invention.

[0055] Figure 9 It is an exploded schematic diagram of the linkage seat, longitudinal drive assembly and wedge block of the present invention.

[0056] Figure 10 It is a connection diagram of the left adjustment plate, the right adjustment plate, the support rod and the adjustment pressure rod of the present invention.

[0057] Figure 11 It is a schematic cross-sectional view of the left adjustment plate and the right adjustment plate of the present invention.

[0058] Figure 12 It is an exploded schematic diagram of the gear left adjustment plate, right adjustment plate and axial tightening assembly of the present invention.

[0059] In the figure: 1. rear vertical plate; 2. first base plate; 3. second base plate; 4. front vertical plate; 5. upper baffle; 6. left adjustment plate; 7. fixed screw; 8. right adjustment plate; 9. first adjusting screw sleeve; 10. longitudinal movable seat; 11. adjusting pressure rod; 12. support rod; 13. connecting bar; 14. upper limit rod; 15. spur gear; 16. vertical gear plate; 17. linkage seat; 18. longitudinal drive screw; 1801, longitudinal adjustment handle; 19. limit block; 20. No. 1 spring; 21. wedge block; 22. No. 2 spring; 23. lateral adjustment handle; 24. screw nut; 25. lateral screw; 26. matching roller rod; 27. second adjusting screw sleeve; 28. Z-axis stud; 29. ​​clamping block; 30. moving frame; 31. cylindrical slider. DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0061] See also Figures 1 to 12 The present invention provides a technical solution: a size-adjustable cable tray, comprising two or more unit tray components for splicing, wherein the unit tray components include:

[0062] The first base plate 2 and the second base plate 3 overlap each other and are used to provide bottom support for the cables. The ends of the first base plate 2 and the second base plate 3 facing away from each other are provided with a rear vertical plate 1 and a front vertical plate 4 in sequence. The first base plate 2 is driven by a transverse drive assembly and slides linearly in the Z axis relative to the second base plate 3. The requirements of different widths of cable assembly can be adapted by adjusting the distance between the rear vertical plate 1 and the front vertical plate 4. The transverse drive assembly includes a transverse adjustment handle 23, a screw nut 24 and a transverse screw 25. The screw nut 24 is fixedly arranged on the side wall of the first base plate 2, and a cylindrical cavity for accommodating the transverse screw 25 is opened on the first base plate 2. One end of the transverse screw 25 is fixedly connected to the transverse adjustment handle 23, and the other end of the transverse screw 25 passes through the front vertical plate 4, the second base plate 3 and the screw nut 24 in sequence and extends into the cylindrical cavity.

[0063] Furthermore, by rotating the lateral adjustment handle 23, it drives the lateral screw 25 to rotate, and under the rotational action of the internal and external threads, the screw nut 24 drives the first base plate 2 to slide on the second base plate 3, thereby adjusting the distance between the front vertical plate 4 and the rear vertical plate 1, thereby adapting to the laying requirements of different numbers of cables.

[0064] like Figure 2 as well as Figure 3 As shown, the upper baffle 5 is fixedly overlapped on the rear vertical plate 1 and the front vertical plate 4 through a detachable structure; the upper baffle 5 is arranged opposite to the first bottom plate 2 and the second bottom plate 3, and the upper baffle 5 is formed by two groups of L-shaped beams spliced ​​together, and can be expanded or closed as the spacing between the rear vertical plate 1 and the front vertical plate 4 changes.

[0065] like Figure 4 、 Figure 10 as well as Figure 12 As shown, a left adjustment plate 6 and a right adjustment plate 8 are fixedly provided on the rear vertical plate 1 and the front vertical plate 4. The left adjustment plate 6 and the right adjustment plate 8 rotate in conjunction and are locked by an axial tightening assembly; the upper and lower rotation ranges of the left adjustment plate 6 and the right adjustment plate 8 are both 0-90°; the axial tightening assembly includes a fixed screw 7 and a first adjusting screw sleeve 9; the fixed screw 7 is fixedly provided on the left adjustment plate 6, and a circular hole for accommodating the fixed screw 7 is opened on the right adjustment plate 8. The first adjusting screw sleeve 9 is screwed onto the fixed screw 7 and abuts against the right adjustment plate 8.

[0066] Furthermore, by setting a fixed screw 7, a first adjusting screw sleeve 9 and using them in conjunction with the left adjusting plate 6 and the right adjusting plate 8, the angles of adjacent unit bridge components can be rotated and adjusted up and down by 0-90°, which can bypass obstacles such as pipes and equipment, adapt to complex building structures or temporary path change requirements, and achieve the effect of conformal wiring.

[0067] like Figure 10-12As shown, a cable clamping assembly is provided on the left adjustment plate 6, and the cable tension is adaptively adjusted according to the angle change of the left adjustment plate 6 and the right adjustment plate 8; the cable clamping assembly includes a longitudinal movable seat 10, an adjusting pressure rod 11, a support rod 12, a movable frame 30 and a cylindrical slider 31, and the longitudinal movable seat 10 moves up and down on the left adjustment plate 6; the adjusting pressure rod 11 is slidably installed on the longitudinal movable seat 10 and locked by the limit assembly; the movable frame 30 is limitedly slidably installed in the left adjustment plate 6 and fixedly connected to the longitudinal movable seat 10; the cylindrical slider 31 is eccentrically arranged on the side wall of the right adjustment plate 8, and a 180° arc groove is opened on the side wall of the left adjustment plate 6. The cylindrical slider 31 passes through the arc groove and is movably inserted in the movable frame 30.

[0068] Furthermore, by setting up an adjusting pressure rod 11 and using it in conjunction with the support rod 12, part of the cables can be lifted up and distributed in a parabolic shape, providing a reserved length for tension adjustment; and by using the movable frame 30 and the cylindrical slider 31 in conjunction with each other, the longitudinal movable seat 10 can adaptively move up and down as the angle of the right adjustment plate 8 changes, and the longitudinal movable seat 10 acts together on the adjusting pressure rod 11 and the support rod 12, so that when the bridge assembly is adjusting its angle, the cable located at the left adjustment plate 6 can adaptively give length compensation, thereby avoiding the cable from being in a taut state, ensuring the integrity of its physical structure, and extending the service life of the cable.

[0069] like Figure 12 As shown, the limiting assembly includes a clamping block 29, a Z-axis stud 28, and a second adjusting screw sleeve 27. The clamping block 29 moves up and down within the longitudinal movable seat 10. One end of the Z-axis stud 28 is fixedly connected to the clamping block 29, and the other end of the Z-axis stud 28 is rotatably connected to the adjusting pressure rod 11. The second adjusting screw sleeve 27 is sleeved on the Z-axis stud 28 and abuts against the side wall of the longitudinal movable seat 10. The support rod 12 is arranged opposite to the adjusting pressure rod 11 and is mounted on the longitudinal movable seat 10 for limited rotation.

[0070] Specifically, by screwing the second adjusting screw sleeve 27 in or out on the Z-axis stud 28, the longitudinal movable seat 10 is tightened or loosened, thereby facilitating the up and down adjustment of the adjusting pressure rod 11 and at the same time, the adjusted adjusting pressure rod 11 can be quickly fixed on the longitudinal movable seat 10 in a timely manner.

[0071] like Figure 8 as well as Figure 9As shown, the rear vertical plate 1 is provided with a connecting bar 13, which is provided with an upper limit rod 14. The connecting bar 13 is driven up and down by a longitudinal drive assembly. The height of the upper limit rod 14 is adjusted to accommodate the assembly requirements of cables of different diameters. The longitudinal drive assembly includes a linkage seat 17, a longitudinal drive screw 18, a longitudinal adjustment handle 1801, and a wedge block 21. The connecting bar 13 is mounted on the linkage seat 17 for limited rotation. A narrow slot is also provided on the side wall of the linkage seat 17. The wedge block 21 extends into the narrow slot and is connected to an elastic assembly; the elastic assembly is a No. 2 spring 22. The lower end of the wedge block 21 is horizontal and can limit the upper end of the connecting bar 13, allowing the connecting bar 13 to move stably up and down with the linkage seat 17. The linkage seat 17 is installed on the rear vertical plate 1 with limited sliding, and an internal screw hole is opened in the middle of the linkage seat 17; one end of the longitudinal drive screw 18 is fixedly connected to the longitudinal adjustment handle 1801, and the other end of the longitudinal drive screw 18 extends from the bottom of the rear vertical plate 1 and is inserted into the internal screw hole.

[0072] Furthermore, by providing a longitudinal drive screw 18 and a longitudinal adjustment handle 1801 in conjunction with the linkage seat 17, the connecting bar 13 can be driven to move up and down, thereby adjusting the height of the upper limit rod 14 according to the diameter change of the cable to be assembled.

[0073] like Figure 5 as well as Figure 9 As shown, the end of the connecting bar 13 is fixedly inserted with a central shaft, on which a spur gear 15 is fixedly sleeved, and the spur gear 15 is meshedly connected to a vertical toothed plate 16; the side of the vertical toothed plate 16 away from the spur gear 15 is fixedly connected to a limit block 19, and the side wall of the linkage seat 17 is provided with a dovetail-shaped slot to accommodate the limit block 19; a No. 1 spring 20 is provided on the bottom wall of the dovetail slot, and the upper end of the No. 1 spring 20 is fixedly connected to the limit block 19. A rectangular slot is provided on the side wall of the rear vertical plate 1 to accommodate the connecting bar 13, and a protrusion is provided on the top wall of the rectangular slot to cooperate with the wedge block 21. When the wedge block 21 contacts the protrusion, its inclined surface is squeezed back into the narrow slot by the protrusion; and both sides of the rectangular slot are recessed with narrow, long slots that cooperate with the central shaft.

[0074] Furthermore, by setting up the coordinated use of the spur gear 15, the vertical tooth plate 16, the limit block 19 and the No. 1 spring 20, it is possible to ensure that the connecting bar 13 moves up and down together with the linkage seat 17, and can also be quickly flipped upward when the linkage seat 17 moves to the top position of the rear vertical plate 1, so as to facilitate the assembly of the cable; and when the connecting bar 13 moves upward, the wedge block 21 is squeezed by the top wall of the rectangular slot before the vertical tooth plate 16 and retracts into the narrow slot, while the vertical tooth plate 16 is squeezed downward by the top wall of the rectangular slot after the wedge block 21.

[0075] like Figure 5 as well as Figure 6As shown, the support rod 12 is rotatably matched with the longitudinal movable seat 10, and there are no less than two groups of matching roller rods 26 connected to the first base plate 2 and the second base plate 3; the matching roller rod 26, the upper limit rod 14, the adjusting pressure rod 11 and the support rod 12 are all telescopic rods, and the matching roller rod 26, the upper limit rod 14, the adjusting pressure rod 11 and the support rod 12 are all in rolling contact with the cables. This arrangement is convenient and makes the wiring process smoother; it reduces friction damage to the cables during laying and bridge frame adjustment, ensures stable cable performance, and improves the reliability of the entire cable wiring system.

[0076] During use: first determine the total width of the arrangement according to the number of cables to be assembled. At this time, by turning the horizontal adjustment handle 23, it drives the horizontal screw 25 to rotate, and under the screwing action of the internal and external threads, the screw nut 24 drives the first base plate 2 to slide on the second base plate 3, so as to adjust the distance between the front vertical plate 4 and the rear vertical plate 1, so as to set the width of the bridge to be consistent with the required width; then according to the total length of the cable arrangement, select the corresponding number of unit bridge components for splicing. After the bridge is assembled, first lay the cables flatly on the first base plate 2 and the second base plate 3 in a row; then by turning the longitudinal adjustment handle 1801, drive the longitudinal drive screw 18 to rotate clockwise, and under the screwing action of the internal and external threads, the linkage seat 17 drives the connecting bar 13 and the upper limit rod 14 to move downward.

[0077] During this process, the vertical tooth plate 16 breaks contact with the top wall of the rectangular slot before the wedge block 21, and moves upward quickly to restore to its original position under the elastic force of the No. 1 spring 20, while the vertical tooth plate 16 acts on the spur gear 15.

[0078] The spur gear 15 quickly rotates downward 90°, driving the connecting bar 13 and the upper limit rod 14 to quickly rotate downward and then remain stationary. Then the wedge block 21 also breaks contact with the protrusion on the top wall of the rectangular slot, and quickly extends outward under the elastic force of the No. 2 spring 22 and limits the upper end of the connecting bar 13; so that the connecting bar 13 can continue to move downward steadily with the linkage seat 17, thereby allowing the upper limit rod 14 to limit the upper end of the cable.

[0079] When the installation angle needs to be adjusted, the first adjusting screw sleeve 9 is unscrewed from the fixed screw 7 to release the pressing effect on the right adjusting plate 8. At this time, the right adjusting plate 8 can be driven to rotate up and down by 0-90°; when the right adjusting plate 8 is downward or rotated downward by 0-90°, the right adjusting plate 8 thereon acts on the movable frame 30, causing the movable frame 30 to move downward, and the movable frame 30 acts on the longitudinal movable seat 10, causing the longitudinal movable seat 10 to drive the adjusting pressure rod 11 and the support rod 12 to move downward, so that the cable located at the left adjusting plate 6 can adaptively provide length compensation, avoid the cable being in a tight state, ensure its physical structure integrity, and extend the service life of the cable.

[0080] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A size-adjustable cable tray, comprising two or more unit tray components connected together, characterized in that: The unit bridge assembly includes: The first bottom plate and the second bottom plate overlap each other and are used to support the cables. The ends of the first bottom plate and the second bottom plate that are away from each other are provided with a rear vertical plate and a front vertical plate in sequence. An upper baffle, overlapped on the rear vertical plate and the front vertical plate; The first base plate is driven by the transverse drive assembly and slides linearly on the Z axis relative to the second base plate. The spacing between the rear and front vertical plates is adjusted to accommodate the different widths of cable assemblies. The rear vertical plate and the front vertical plate are both provided with a left adjustment plate and a right adjustment plate, which are rotated together and locked by an axial tightening assembly; The left adjustment plate is provided with a cable clamping assembly, which can adaptively adjust the cable tension according to the angle changes of the left and right adjustment plates; A connecting bar is provided on the rear vertical plate, and an upper limit rod is provided on the connecting bar. The connecting bar is driven by the longitudinal drive assembly to move up and down. The height of the upper limit rod is adjusted to meet the assembly requirements of cables of different diameters. The longitudinal drive assembly includes a linkage seat, a longitudinal drive screw, a longitudinal adjustment handle and a wedge block. The connecting bar is rotationally mounted on the linkage seat. The wedge block is slidingly mounted on the linkage seat through an elastic assembly to limit the upper end of the connecting bar. The end of the connecting bar is fixedly connected to a central shaft, a spur gear is fixedly sleeved on the central shaft, and the spur gear is meshed and connected to the vertical toothed plate; the side of the vertical toothed plate away from the spur gear is fixedly connected to a limit block, and the side wall of the linkage seat is provided with a dovetail-shaped slot for accommodating the limit block; a No. 1 spring is provided on the bottom wall of the dovetail-shaped slot, and the upper end of the No. 1 spring is fixedly connected to the limit block; The side wall of the rear vertical plate is provided with a rectangular slot for accommodating the connecting strip, and the top wall of the rectangular slot is provided with a protrusion; When the connecting bar moves upward, the wedge block is squeezed by the top wall protrusion of the rectangular slot before the vertical tooth plate and shrinks into the narrow slot, while the vertical tooth plate is squeezed downward by the top wall of the rectangular slot after the wedge block.

2. The size-adjustable cable tray according to claim 1, characterized in that: The left and right adjustment plates have an up and down rotation range of 0-90°. The axial tightening assembly includes a fixed screw and a first adjusting screw sleeve; The fixing screw is arranged on the left adjusting plate, and a round hole for accommodating the fixing screw is opened on the right adjusting plate. The first adjusting screw sleeve is screwed on the fixing screw and contacts the right adjusting plate.

3. The size-adjustable cable tray according to claim 1, characterized in that: The cable clamping assembly includes: The longitudinal movable seat moves up and down on the left adjustment plate; The adjusting pressure rod is slidably mounted on the longitudinal movable seat and locked by the limit assembly; The support rod is arranged opposite to the adjusting pressure rod and is installed on the longitudinal movable seat for limited rotation.

4. The size-adjustable cable tray according to claim 3, characterized in that: The cable clamping assembly further comprises: The movable frame is limitedly slidably installed in the left adjustment plate and fixedly connected to the longitudinal movable seat; The cylindrical slider is eccentrically arranged on the side wall of the right adjustment plate. A 180° arc groove is opened on the side wall of the left adjustment plate. The cylindrical slider passes through the arc groove and is movably inserted in the moving frame.

5. The size-adjustable cable tray according to claim 3, characterized in that: The limiting component includes: The clamping block moves up and down in the longitudinal movable seat; The Z-axis stud has one end fixedly connected to the clamping block and the other end rotatably connected to the adjusting lever; The second adjusting screw sleeve is sleeved on the Z-axis screw and contacts the side wall connected to the longitudinal movable seat.

6. The size-adjustable cable tray according to claim 3, characterized in that: The support rod is rotatably matched with the longitudinal movable seat, and the first bottom plate and the second bottom plate are commonly connected to at least two sets of matching roller rods; The matching roller rod, the upper limit rod, the adjusting pressure rod and the supporting rod are all telescopic rods.

7. The size-adjustable cable tray according to claim 1, characterized in that: The linkage seat is limitedly slidably mounted on the rear vertical plate, and an internal screw hole is opened in the middle of the linkage seat; One end of the longitudinal driving screw is fixedly connected to the longitudinal adjusting handle, and the other end of the longitudinal driving screw extends from the bottom of the rear vertical plate and is inserted into the inner screw hole.

8. The size-adjustable cable tray according to claim 7, characterized in that: The side wall of the linkage seat is also provided with a narrow slot, and the wedge-shaped block extends into the narrow slot and is connected to the elastic component; The elastic component is a No. 2 spring.

9. The size-adjustable cable tray according to claim 1, characterized in that: The transverse drive assembly includes a transverse adjustment handle, a screw nut and a transverse screw, wherein the screw nut is fixedly arranged on the side wall of the first base plate, and a cylindrical cavity for accommodating the transverse screw is opened on the first base plate; One end of the transverse lead screw is fixedly connected to the transverse adjustment handle, and the other end of the transverse lead screw sequentially passes through the front vertical plate, the second base plate and the lead screw nut and extends into the cylindrical cavity.

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