Built-in flat cable rack for frequency conversion cabinet

Abstract

The utility model relates to a built-in flat cable rack for a frequency conversion cabinet, and belongs to the technical field of flat cable racks. Comprising a flat cable frame and a plurality of cable clamping structures movably installed in the flat cable frame. The wire arranging frame comprises an upper cross beam and a lower cross beam which are parallel to each other, and the left and right ends of the upper cross beam and the lower cross beam are connected through connecting pieces; the cable clamping structure comprises an outer inverted U-shaped frame and an outer U-shaped frame, the outer inverted U-shaped frame is slidably connected to the lower surface of the upper cross beam and detachably connected with the upper cross beam, and the outer U-shaped frame is slidably connected to the upper surface of the lower cross beam and detachably connected with the lower cross beam. According to the utility model, a proper number of cable clamping structures can be installed between the upper cross beam and the lower cross beam according to actual cable clamping requirements, and the clamping position of each cable clamping structure in the flat cable frame can be flexibly adjusted according to the cable position. And secondly, the cable clamping pieces in the cable clamping structure all adopt independent clamping, so that the cables with different diameters can be effectively fixed, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable tray technology, and in particular to a built-in cable tray for frequency converter cabinets. Background Technology

[0002] Installing a built-in cable tray in the frequency converter cabinet can effectively organize cables, improve the utilization rate of space inside the frequency converter cabinet, and enhance heat dissipation and maintenance convenience.

[0003] A search revealed that utility model patent CN221510061U discloses a built-in cable tray structure for frequency converter cabinets. This structure solves the problem that cable trays in frequency converter cabinets are inconvenient for fixing cables during use, affecting cable stability and hindering practicality. The structure includes a frame with positioning blocks fixedly installed on both sides of the frame's interior. Support components are installed at the bottom of the positioning blocks, and adjustment and fixing components are installed at the top of the positioning blocks. The adjustment and fixing components include symmetrically arranged threaded rods, with two threaded rods rotatably mounted on the tops of the two positioning blocks. Threaded movable sleeves are threaded onto the outer sides of the threaded rods, and a movable strip is fixedly installed between the two threaded movable sleeves. This utility model enables better cable fixing during the use of the cable tray in frequency converter cabinets, ensuring cable stability and thus achieving better practicality.

[0004] However, the aforementioned cable tray can only be used to secure cables of the same diameter. When the cable diameter is different, the cable tray cannot provide sufficient securing force, which will affect its adaptability to cables of different specifications, thus reducing its practicality in real-world applications. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a built-in cable tray for a frequency converter cabinet. The technical solution of this utility model is as follows:

[0006] A built-in cable tray for a frequency converter cabinet includes a cable tray frame and multiple sets of cable clamping structures that are movably installed inside the cable tray frame.

[0007] The wiring frame includes an upper crossbeam and a lower crossbeam that are parallel to each other, and the left and right ends of the upper crossbeam and the lower crossbeam are connected by connectors.

[0008] A cable clamping structure includes an inverted U-shaped frame and an outer U-shaped frame. The inverted U-shaped frame is slidably connected to the lower surface of the upper crossbeam and the two are detachably connected. The outer U-shaped frame is slidably connected to the upper surface of the lower crossbeam and the two are detachably connected. The inverted U-shaped frame is movably inserted into the upper end of the outer U-shaped frame. Both the inverted U-shaped frame and the outer U-shaped frame have cable clamping components connected inside. Each cable clamping component includes a movable plate and a cable clamping block. Both the inverted U-shaped frame and the outer U-shaped frame have an inner U-shaped frame that slides longitudinally inside. An adjuster for adjusting the position is connected to the inner U-shaped frame. The movable plate slides longitudinally inside the inner U-shaped frame. An elastic element is clamped between the movable plate and the transverse edge of the inner U-shaped frame. A cable clamping block is detachably connected to the end of the movable plate away from the elastic element. Both the inverted U-shaped frame and the outer U-shaped frame have limiting elements for fixing their positions connected to the side away from the opening.

[0009] Optionally, the connector includes two sets of fixing strips and two sets of hollow fixing seats with open tops. The two sets of fixing strips are respectively fixedly connected to the left and right ends of the upper crossbeam, and the two sets of fixing seats are respectively fixedly connected to the left and right ends of the lower crossbeam. The two sets of fixing strips are respectively inserted into the interior of the two sets of fixing seats and fixed between them by screws.

[0010] Optionally, positioning holes are provided on both sides of the outer inverted U-shaped frame, and positioning pins are fixedly connected to both sides of the outer U-shaped frame. The positioning pins are movably inserted into the positioning holes at the corresponding positions.

[0011] Optionally, the surfaces of the upper and lower crossbeams are longitudinally perforated with movable grooves, and the middle of the transverse sides of the outer inverted U-shaped frame and the outer U-shaped frame are perforated with threaded holes. The adjuster is a threaded rod, and the adjuster is threadedly connected inside the threaded hole. One end of the adjuster is rotatably connected to the inner U-shaped frame, and the end of the adjuster away from the inner U-shaped frame passes through the movable groove and is fixedly connected to a knob.

[0012] Optionally, the movable plate is fixedly connected to an ear seat on the side away from the elastic element, and the wire clamping block is provided with a fixing groove on the side near the movable plate. The wire clamping block is movably inserted into the outside of the ear seat through the fixing groove and the two are fixed together by screws.

[0013] Optionally, the elastic element adopts multiple sets of springs, and the two ends of the springs are fixedly connected to the inner U-shaped frame and the movable plate, respectively.

[0014] Optionally, the limiting component includes two sets of short studs, which are fixedly connected to the outer inverted U-shaped frame or the outer side of the transverse edge of the outer U-shaped frame. The ends of the two sets of short studs pass through the movable groove and are threaded with nuts on their outer sides.

[0015] Optionally, two sets of limiting plates are fixedly connected to opposite sides of the upper and lower crossbeams, with the two sets of limiting plates located at the front and rear sides of the movable groove, respectively.

[0016] All of the above optional technical solutions can be combined arbitrarily, and this utility model does not provide a detailed description of the structure after each combination.

[0017] The beneficial effects of this utility model through the above solution are as follows:

[0018] This invention allows for the installation of a suitable number of cable clamping structures between the upper and lower crossbeams according to actual cable clamping requirements. Furthermore, the clamping position of each cable clamping structure within the cable tray can be flexibly adjusted based on the cable's position. Secondly, the clamping components within the cable clamping structures are all independently clamped, enabling effective fixation of cables of different diameters and improving practicality. In addition, by disconnecting the connecting piece between the upper and lower crossbeams, the cables clamped within the cable tray can be released in batches, making cable disassembly easier.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall appearance structure of the built-in cable tray for the frequency converter cabinet provided by this utility model;

[0021] Figure 2 Front sectional view of the built-in cable tray for the frequency converter cabinet provided by this utility model;

[0022] Figure 3 An exploded view of the built-in cable tray for the frequency converter cabinet provided by this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the upper crossbeam, the outer inverted U-shaped frame, and the clamping component in this utility model.

[0024] Figure 5 This is an exploded structural diagram of the outer and inner U-shaped frames and the clamping parts in this utility model;

[0025] Figure 6 This is an exploded structural diagram of the movable plate and clamping block in this utility model.

[0026] The following are the labeling elements in the diagram: 1. Cable tray; 11. Upper crossbeam; 12. Lower crossbeam; 121. Movable groove; 122. Limiting plate; 13. Connector; 131. Fixing strip; 132. Fixing seat; 2. Outer inverted U-shaped frame; 21. Positioning hole; 3. Outer U-shaped frame; 31. Positioning pin; 32. Threaded hole; 4. Cable clamp; 41. Inner U-shaped frame; 42. Adjuster; 421. Knob; 43. Movable plate; 431. Ear seat; 44. Elastic element; 45. Cable clamp block; 451. Fixing groove; 46. Limiting element; 461. Short stud; 462. Nut. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] Please see Figure 1-6 This utility model provides a built-in cable tray for a frequency converter cabinet, including a cable tray frame 1 and multiple sets of cable clamping structures movably installed inside the cable tray frame 1;

[0029] The wiring frame 1 includes an upper crossbeam 11 and a lower crossbeam 12 that are parallel to each other. The left and right ends of the upper crossbeam 11 and the lower crossbeam 12 are connected by connectors 13.

[0030] The cable clamping structure includes an outer inverted U-shaped frame 2 and an outer U-shaped frame 3. The outer inverted U-shaped frame 2 is slidably connected to the lower surface of the upper crossbeam 11, and the two are detachably connected. The outer U-shaped frame 3 is slidably connected to the upper surface of the lower crossbeam 12, and the two are detachably connected. The outer inverted U-shaped frame 2 is movably inserted into the upper end of the outer U-shaped frame 3. Both the outer inverted U-shaped frame 2 and the outer U-shaped frame 3 have cable clamping components 4 connected inside. The cable clamping components 4 include a movable plate 43 and a cable clamping block 45. The inner U-shaped frame 41 is longitudinally slidably installed inside the frame 3. An adjuster 42 for adjusting its position is connected to the inner U-shaped frame 41. The movable plate 43 is longitudinally slidably installed inside the inner U-shaped frame 41. An elastic element 44 is sandwiched between the movable plate 43 and the transverse edge of the inner U-shaped frame 41. A clamping block 45 is detachably connected to the end of the movable plate 43 away from the elastic element 44. The outer inverted U-shaped frame 2 and the outer U-shaped frame 3 are both connected to the side away from the opening with a limiting element 46 for fixing their position.

[0031] In this invention, an appropriate number of cable clamping structures can be installed within the cable tray 1 according to actual needs. Specifically, an appropriate number of outward-inverted U-shaped frames 2 and 3 are installed between the upper crossbeam 11 and the lower crossbeam 12. The upper crossbeam 11 and the lower crossbeam 12 are then connected via a connector 13. At this point, the outward-inverted U-shaped frames 2 and 3 are simultaneously inserted into each other, thus forming the cable clamping structure. Furthermore, by adjusting the relative positions of the outward-inverted U-shaped frames 2 and 3 between the upper crossbeam 11 and the lower crossbeam 12, the position of the cable clamping structure within the cable tray 1 can be flexibly adjusted. After adjustment, the positions of the outward-inverted U-shaped frames 2 and 3 are fixed by a limiting member 46 to ensure the stability of the cable clamping structure.

[0032] Specifically, the upper crossbeam 11 and the lower crossbeam 12 are connected by a connector 13. The outer inverted U-shaped frame 2 is detachably connected to the upper crossbeam 11, and the outer U-shaped frame 3 is detachably connected to the lower crossbeam 12. By disconnecting the connector 13 between the upper crossbeam 11 and the lower crossbeam 12, all the outer inverted U-shaped frames 2 connected to the upper crossbeam 11 and all the outer U-shaped frames 3 connected to the lower crossbeam 12 can be separated, thereby enabling the bulk removal and fixing of cables.

[0033] Specifically, during the cable clamping process using the cable clamp 4, the cable is passed through the inner side of the clamping groove between the upper and lower sets of clamping blocks 45. Then, the relative position of the inner U-shaped frame 41 inside the outer inverted U-shaped frame 2 or outer U-shaped frame 3 is adjusted by the adjuster 42. The inner U-shaped frame 41 drives the clamping blocks 45 to change position through the movable plate 43, thereby achieving the clamping and fixing of the cable. During the clamping and fixing process, as the adjuster 42 rotates and adjusts, the elastic element 44 between the movable plate 43 and the clamping block 45 is gradually compressed. As the elastic element 44 is compressed, the released elastic force gradually acts in the opposite direction, forming a clamping force on the cable. This elastic clamping method not only ensures that the cable is effectively fixed, but also avoids damage to the cable surface due to excessive pressure during the clamping process.

[0034] Specifically, the clamping block 45 is detachably connected to the movable plate 43, allowing workers to select and install a clamping block 45 of appropriate size according to the diameter of the cable being clamped. Figure 1-4 As shown, different clamping blocks 45 are provided with clamping grooves of different diameters (such as large diameter clamping grooves, medium diameter clamping grooves, and small diameter clamping grooves). The clamping grooves of different diameters are used to clamp cables of different diameters, thereby achieving fixed clamping of cables of different diameters.

[0035] Furthermore, the connector 13 includes two sets of fixing strips 131 and two sets of hollow fixing seats 132 with open tops. The two sets of fixing strips 131 are fixedly connected to the left and right ends of the upper crossbeam 11, and the two sets of fixing seats 132 are fixedly connected to the left and right ends of the lower crossbeam 12, respectively. The two sets of fixing strips 131 are inserted into the interior of the two sets of fixing seats 132 and are fixed together by screws. The side of the fixing seat 132 away from the lower crossbeam 12 is fixedly connected to an ear plate, which is used to fix to the internal support of the frequency converter cabinet.

[0036] Specifically, the fixing strip 131 is inserted into the fixing base 132 and fixed with screws. At this time, the upper crossbeam 11, the lower crossbeam 12, and the two sets of connecting parts 13 form a square frame. When it is necessary to separate the upper crossbeam 11 and the lower crossbeam 12, the connecting parts 13 need to be disconnected. At this time, simply remove the screws to remove the fixing strip 131 from the fixing base 132. Then, pull the upper crossbeam 11 upward. The upper crossbeam 11 drives the two sets of fixing strips 131 to disengage from the two sets of fixing bases 132, thereby causing the outer inverted U-shaped frame 2 installed on the upper crossbeam 11 to separate from the outer U-shaped frame 3 installed on the lower crossbeam 12, realizing the batch release of the cable fixing.

[0037] Furthermore, positioning holes 21 are provided on both sides of the outer U-shaped frame 2, and positioning pins 31 are fixedly connected to both sides of the outer U-shaped frame 3. The positioning pins 31 are movably inserted into the positioning holes 21 at the corresponding positions.

[0038] Specifically, when connecting the upper crossbeam 11 and the lower crossbeam 12 via the connector 13, the outer inverted U-shaped frame 2 and the corresponding outer U-shaped frame 3 need to be simultaneously engaged. As the fixing strip 131 is gradually inserted into the bottom of the fixing base 132, the positioning holes 21 on both sides of the outer inverted U-shaped frame 2 need to be aligned with the positioning pins 31 on both sides of the corresponding outer U-shaped frame 3. After the fixing strip 131 is inserted into place, the positioning pins 31 are precisely inserted into the corresponding positioning holes 21. At this point, with the cooperation of the positioning pins 31 and the positioning holes 21, the outer inverted U-shaped frame 2 and the outer U-shaped frame 3 can move laterally in sync.

[0039] Furthermore, both the upper crossbeam 11 and the lower crossbeam 12 have longitudinally penetrating movable grooves 121. Both the outer inverted U-shaped frame 2 and the outer U-shaped frame 3 have threaded holes 32 penetrating through the middle of their transverse edges. The adjuster 42 is a threaded rod, and the adjuster 42 is threadedly connected inside the threaded hole 32. One end of the adjuster 42 is rotatably connected to the inner U-shaped frame 41, and the end of the adjuster 42 away from the inner U-shaped frame 41 passes through the movable groove 121 and is fixedly connected to a knob 421.

[0040] Specifically, when clamping the cable, the cable is placed between two sets of clamping blocks 45. Then, the adjuster 42 is rotated by the knob 421, which causes the relative position of the inner U-shaped frame 41 inside the outer inverted U-shaped frame 2 or the outer U-shaped frame 3 to change, thereby indirectly causing the clamping blocks 45 to move, so as to clamp or release the cable.

[0041] Furthermore, an ear seat 431 is fixedly connected to the side of the movable plate 43 away from the elastic member 44, and a fixing groove 451 is provided on the side of the wire clamping block 45 near the movable plate 43. The wire clamping block 45 is movably inserted into the outside of the ear seat 431 through the fixing groove 451 and the two are fixed together by screws.

[0042] Specifically, the clamping block 45 is connected to the movable plate 43 in a detachable structure, which makes it easy for staff to select the appropriate size clamping block 45 according to the diameter of the cable being clamped.

[0043] Furthermore, the elastic element 44 uses multiple sets of springs, with the two ends of the springs fixedly connected to the inner U-shaped frame 41 and the movable plate 43, respectively.

[0044] Specifically, during the cable clamping process, the two sets of adjusters 42 drive the corresponding inner U-shaped frame 41 on one side to move closer to the other inner U-shaped frame 41, thereby indirectly causing the two sets of clamping blocks 45 to move closer to each other. When the two sets of clamping blocks 45 come into contact with the cable, as the adjusters 42 continue to rotate, the clamping blocks 45, together with the movable plate 43, will move towards the lateral side of the inner U-shaped frame 41. During this process, the spring is gradually compressed. The elastic force generated by the spring compression not only prevents the clamping blocks 45 from damaging the cable when clamping it, but also the reaction force generated by the spring compression can be applied to the cable, making the cable clamping more stable.

[0045] Furthermore, the limiting member 46 includes two sets of short studs 461, which are fixedly connected to the outer side of the transverse edge of the outer inverted U-shaped frame 2 or the outer U-shaped frame 3. The ends of the two sets of short studs 461 pass through the movable groove 121 and are threaded with nuts 462 on their outer sides.

[0046] Specifically, when adjusting the clamping position of the cable clamping structure within the cable tray 1, the nut 462 on the outside of the corresponding short stud 461 can be loosened. At this time, the outer inverted U-shaped frame 2 or the outer U-shaped frame 3 can slide laterally relative to the upper crossbeam 11 or the lower crossbeam 12. After adjusting to the designated position, the nut 462 is tightened to lock the position of the outer inverted U-shaped frame 2 and the outer U-shaped frame 3.

[0047] Furthermore, two sets of limiting plates 122 are fixedly connected to opposite sides of the upper crossbeam 11 and the lower crossbeam 12, with the two sets of limiting plates 122 located at the front and rear sides of the movable groove 121, respectively.

[0048] Specifically, the two sets of limiting plates 122 serve to guide and limit the outward inverted U-shaped frame 2 and the outward U-shaped frame 3, ensuring that the outward inverted U-shaped frame 2 or the outward U-shaped frame 3 can only slide laterally along the upper crossbeam 11 or the lower crossbeam 12.

[0049] Working principle: First, select a suitable size clamping block 45 according to the diameter of the cable being clamped, and connect it with the ear seat 431 on one side of the movable plate 43 using screws. Next, fix the outward U-shaped frame 2 to the upper crossbeam 11 using the limiting member 46, and fix the corresponding number of outward U-shaped frames 3 to the lower crossbeam 12 using the limiting member 46. During the fixing process, it is not necessary to tighten the nut 462 on the outside of the short stud 461, providing convenience for subsequent position adjustment. Second, insert the fixing strips 131 on both sides of the upper crossbeam 11 into the corresponding fixing seats 132. During insertion, the positioning holes 21 of the outward U-shaped frame 2 need to be aligned with the positioning pins 31 of the outward U-shaped frame 3. As the fixing strips 131 gradually move downward, the positioning pins 31 gradually insert into the corresponding positioning holes 21. After insertion, fix the fixing strips 131 to the fixing seats 132 using screws. Third, fix the lower crossbeam 12 to the internal support of the frequency converter cabinet via the ear plates of the two fixing seats 132. Fourth, adjust the position of the cable clamping structure within the cable tray 1 according to the actual position of the cable (the relative positions of the outer inverted U-shaped frame 2 and outer U-shaped frame 3 between the upper crossbeam 11 and the lower crossbeam 12). After adjustment, tighten the nut 462 on the outside of the short stud 461 to fix the position of the cable clamping structure. Fifth, pass the cable through the two sets of clamping blocks 45 in the cable clamping structure, and then drive the corresponding clamping block 45 to clamp the cable by rotating the adjuster 42. Sixth, when it is necessary to release the clamping of the cables in batches, the fixing strip 131 can be directly removed from the fixing seat 132. At this time, the upper crossbeam 11 and the lower crossbeam 12 separate, and the cables are released from the fixing.

[0050] It should be noted that when clamping and fixing cables inside the frequency converter cabinet, the above steps can be flexibly adjusted according to actual needs to complete the cable clamping operation more efficiently. For example, first fix the lower crossbeam 12 to the internal support of the frequency converter cabinet, then adjust the position of the outer U-shaped frame 3 according to the cable position, and then place the cable on the clamping block 45 of the outer U-shaped frame 3. After placement, insert the fixing strip 131 into the fixing base 132. During insertion, adjust the position of the corresponding outer inverted U-shaped frame 2 according to the position of the outer U-shaped frame 3 to ensure that the outer inverted U-shaped frame 2 can align with the outer U-shaped frame 3. After insertion, the cable is exactly between the two sets of clamping blocks 45, and then the cable is clamped and fixed by rotating the adjuster 42.

[0051] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A built-in cable tray for a frequency converter cabinet, characterized in that: It includes a ribbon cable frame (1) and multiple cable clamping structures that are movably installed inside the ribbon cable frame (1); The wiring frame (1) includes an upper crossbeam (11) and a lower crossbeam (12) that are parallel to each other. The left and right ends of the upper crossbeam (11) and the lower crossbeam (12) are connected by connectors (13). The cable clamping structure includes an outer inverted U-shaped frame (2) and an outer U-shaped frame (3). The outer inverted U-shaped frame (2) is slidably connected to the lower surface of the upper crossbeam (11) and the two are detachably connected. The outer U-shaped frame (3) is slidably connected to the upper surface of the lower crossbeam (12) and the two are detachably connected. The outer inverted U-shaped frame (2) is movably inserted into the upper end of the outer U-shaped frame (3). Both the outer inverted U-shaped frame (2) and the outer U-shaped frame (3) are internally connected to a wire clamping component (4). The wire clamping component (4) includes a movable plate (43) and a wire clamping block (45). The outer inverted U-shaped frame (2) and the outer U-shaped frame (3) are detachably connected. The U-shaped frame (3) has an inner U-shaped frame (41) that slides longitudinally inside. An adjuster (42) for adjusting its position is connected to the inner U-shaped frame (41). The movable plate (43) slides longitudinally inside the inner U-shaped frame (41). An elastic element (44) is sandwiched between the movable plate (43) and the transverse side of the inner U-shaped frame (41). A clamping block (45) is detachably connected to the end of the movable plate (43) away from the elastic element (44). A limiting element (46) for fixing its position is connected to the side of the outer inverted U-shaped frame (2) and the outer U-shaped frame (3) away from the opening.

2. The built-in cable tray for a frequency converter cabinet according to claim 1, characterized in that, The connector (13) includes two sets of fixing strips (131) and two sets of hollow fixing seats (132) with open tops. The two sets of fixing strips (131) are fixedly connected to the left and right ends of the upper crossbeam (11), and the two sets of fixing seats (132) are fixedly connected to the left and right ends of the lower crossbeam (12). The two sets of fixing strips (131) are inserted into the interior of the two sets of fixing seats (132) and fixed between them by screws.

3. The built-in cable tray for a frequency converter cabinet according to claim 2, characterized in that, The outer U-shaped frame (2) has positioning holes (21) on both sides, and the outer U-shaped frame (3) has positioning pins (31) fixedly connected to both sides. The positioning pins (31) are movably inserted into the positioning holes (21) at the corresponding positions.

4. The built-in cable tray for a frequency converter cabinet according to claim 1, characterized in that, The surfaces of the upper crossbeam (11) and the lower crossbeam (12) are longitudinally perforated with movable grooves (121). The transverse sides of the outer inverted U-shaped frame (2) and the outer U-shaped frame (3) are perforated with threaded holes (32). The adjuster (42) is a threaded rod. The adjuster (42) is threadedly connected to the inside of the threaded hole (32). One end of the adjuster (42) is rotatably connected to the inner U-shaped frame (41). The end of the adjuster (42) away from the inner U-shaped frame (41) passes through the movable groove (121) and is fixedly connected with a knob (421).

5. The built-in cable tray for a frequency converter cabinet according to claim 1, characterized in that, The movable plate (43) is fixedly connected to the ear seat (431) on the side away from the elastic member (44). The clamping block (45) is provided with a fixing groove (451) on the side close to the movable plate (43). The clamping block (45) is movably inserted into the outside of the ear seat (431) through the fixing groove (451) and the two are fixed together by screws.

6. The built-in cable tray for a frequency converter cabinet according to claim 1, characterized in that, The elastic element (44) uses multiple sets of springs, and the two ends of the springs are fixedly connected to the inner U-shaped frame (41) and the movable plate (43) respectively.

7. The built-in cable tray for a frequency converter cabinet according to claim 1, characterized in that, The limiting member (46) includes two sets of short studs (461). The two sets of short studs (461) are fixedly connected to the outer side of the transverse edge of the outer inverted U-shaped frame (2) or the outer U-shaped frame (3). The ends of the two sets of short studs (461) pass through the movable groove (121) and are threaded with nuts (462) on their outer sides.

8. The built-in cable tray for a frequency converter cabinet according to claim 4, characterized in that, Two sets of limiting plates (122) are fixedly connected to the opposite side of the upper crossbeam (11) and the lower crossbeam (12), and the two sets of limiting plates (122) are located on the front and rear sides of the movable groove (121), respectively.

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