A limited space cable bridge installation auxiliary device

Abstract

This application relates to the technical field of cable tray installation, and in particular to an auxiliary device for cable tray installation in confined spaces. The device includes a liftable installation frame with an alignment mechanism mounted on it to assist in the alignment of two cable trays. By setting an outer alignment frame and an inner alignment frame that can move towards or away from each other, the device provides double positioning from both the outside and inside of the cable tray. The outer alignment frame first moves the cable tray to be installed towards the already installed cable tray, achieving initial alignment at the ends of the cable trays. The inner alignment frame then extends along the length of the cable tray to perform secondary correction on the far end of the cable tray to be installed. This effectively avoids the overall offset problem that easily occurs when relying solely on the end positioning of the cable tray, ensuring that the cable tray to be installed and the already installed cable tray are consistent in the horizontal direction, and preventing subsequent tray misalignment and cable bending due to inaccurate reference positioning.

Description

Technical Field

[0001] This application relates to the technical field of cable tray installation, and in particular to an auxiliary device for cable tray installation in confined spaces. Background Technology

[0002] Cable trays are a support structure used for laying and protecting electrical cables. They are usually made of metal or plastic and can effectively support and fix cables, facilitating cable installation, maintenance and replacement. Cable trays are widely used in many fields such as construction, industry and pipeline engineering. They can help people install cables conveniently in different environments and improve work efficiency.

[0003] For example, patent application number 2021233774761 discloses a cable tray installation device, including a fixing plate, a connecting rod, and a placement frame. The connecting rod has an internal thread and cooperates with a screw. The bottom of the screw is located in the connecting block of the placement frame. The placement frame is divided into upper and lower layers by a partition. Both layers are provided with multiple fixing mechanisms. The height of the device can be adjusted by the cooperation of the connecting rod and the screw, so that the cable tray is kept in a straight line, improving flexibility and installation convenience. The fixing mechanisms can fix the tray, prevent movement, enhance stability, and facilitate tray replacement.

[0004] Although the aforementioned existing technologies can achieve basic fixing and replacement functions for cable trays and meet simple installation and use requirements, there are still many defects that need to be addressed in actual engineering applications. Specifically, the existing technologies can only achieve the fixing and limiting of a single tray when fixing cable trays. They do not set up alignment limiting structures for adjacent trays, nor do they provide corresponding alignment auxiliary means.

[0005] This can easily lead to horizontal misalignment and height discrepancy between two adjacent trays after they are fixed in place. It is impossible to ensure that the axes of adjacent trays are on the same straight line. During subsequent cable laying operations, when the cable is placed inside a tray with positional deviation, the cable will bend and deflect unnecessarily due to the misalignment of the tray. This not only increases the difficulty of cable laying and causes jamming and pulling during the laying process, but also keeps the cable under stress for a long time, which can lead to wear of the cable insulation layer and damage to the internal core wires, affecting the transmission performance and service life of the cable.

[0006] At the same time, misaligned trays will also affect the overall aesthetics and structural regularity of the cable tray, requiring additional manpower and time for adjustment, which increases construction costs and construction period. Summary of the Invention

[0007] To solve the above-mentioned technical problems, this application provides an auxiliary device for installing cable trays in confined spaces, which adopts the following technical solution: A confined space cable tray installation auxiliary device includes a liftable installation frame, on which an alignment mechanism for assisting in the limiting alignment of two cable trays is installed.

[0008] The alignment mechanism includes two outer alignment frames that are symmetrically slidably disposed at the bottom of the mounting frame along the length of the mounting frame. The two outer alignment frames can move simultaneously toward each other or away from each other along the mounting frame to align and limit the cable tray to be installed with the already installed cable tray.

[0009] The bottom of the mounting frame is also symmetrically and slidably equipped with an inner alignment frame for secondary positioning of the cable tray along its length. The inner alignment frame is a telescopic structure that can be lengthened according to the length of the cable tray.

[0010] Preferably, one end of the mounting frame is provided with a connecting protrusion for connecting with existing lifting equipment, which can drive the mounting frame to move up and down.

[0011] Preferably, the inner alignment frame is composed of multiple plates that slide and splice together, and can be freely extended to adapt to cable trays of different lengths.

[0012] Preferably, a bidirectional cylinder is mounted on the side of the mounting frame via a cylinder seat, and the outer alignment frame is connected to the telescopic end of the corresponding side of the bidirectional cylinder via a connecting block. The bidirectional cylinder can drive the two outer alignment frames to move towards each other or away from each other.

[0013] Preferably, a dual-axis motor is mounted on the top of the mounting frame via a motor mount. A threaded rod is mounted on the output shaft of the dual-axis motor, and a linkage rod that slides through the mounting frame is mounted on the inner alignment frame. The threaded rod and the linkage rod are threadedly connected. The dual-axis motor can drive the linkage rod through the threaded rod to move the inner alignment frame toward or away from each other.

[0014] Preferably, an elastic telescopic rod is installed at the bottom of the mounting frame, and a pressure plate extending along the length of the cable tray is installed at the bottom of the telescopic end of the elastic telescopic rod. A rubber pressure pad for pressing the horizontal section of the cable tray is installed at the bottom of the pressure plate.

[0015] Preferably, the pressure plate is symmetrically provided with guide frames in the width direction, and L-shaped guide rods corresponding to the guide frames are installed on the linkage rod. The guide frame is provided with a guide slope that cooperates with the vertical section of the guide rod. When the linkage rod moves, the pressure plate can be driven to move up and down through the cooperation between the guide rod and the guide slope.

[0016] Preferably, a sliding groove is provided on the opposite surface of the outer alignment frame, and a drive block that can automatically reset is slidably arranged in the sliding groove. A rubber pressure pad that cooperates with the cable tray is installed on the drive block, and a telescopic elastic rod for driving the drive block to reset is installed in the sliding groove.

[0017] Preferably, the drive block is connected to an adjusting block via a linkage block. The adjusting block has a guide slope, and an L-shaped adjusting rod is installed on the linkage rod. The short half of the adjusting rod abuts against the guide slope. When the linkage rod moves, the drive block can be moved by the cooperation between the adjusting rod and the guide slope.

[0018] Preferably, the parts of the outer and inner alignment frames that contact the cable tray are equipped with ball bearings to prevent the cable tray from being rigidly pulled or collided with the outer and inner alignment frames.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. This invention uses an outer alignment frame and an inner alignment frame that can move towards or away from each other to provide dual positioning from the outside and inside of the cable tray. The outer alignment frame first moves the cable tray to be installed toward the installed cable tray, achieving initial alignment at the ends of the cable trays. The inner alignment frame then extends along the length of the cable tray to perform secondary correction at the far end of the cable tray to be installed. This effectively avoids the overall offset problem that can easily occur if the cable tray is positioned only at the ends, ensuring that the cable tray to be installed and the installed cable tray are consistent in the horizontal direction, and avoiding problems such as cable tray misalignment and cable bending caused by inaccurate benchmark positioning.

[0020] 2. This invention uses a linkage rod to synchronously drive the guide rod through the guide inclined surface to drive the pressure plate downward, so that the rubber pressure pad one simultaneously presses the horizontal sections of the two cable trays, eliminating height misalignment and ensuring that the horizontal sections of the cable trays are aligned. When the adjusting rod is about to be in place, it drives the adjusting block, so that the driving block, through the rubber pressure pad two, tightly presses the end face of the cable tray to be installed against the end face of the already installed cable tray.

[0021] The above actions achieve bidirectional alignment in both the horizontal and vertical directions and complete pre-fixation, providing a stable and reliable installation foundation for subsequent bolt tightening, effectively ensuring the smoothness of the cable laying path and the installation quality.

[0022] 3. In the alignment and pre-fixing process of this invention, the outer alignment frame and the inner alignment frame are located on the outside and inside of the cable tray, respectively. The pressure plate, guide frame and other components are arranged around the cable tray body. The entire operation is limited to the inside of the cable tray and its adjacent area, without the need to occupy additional external construction space.

[0023] Meanwhile, the inner alignment frame adopts a telescopic structure to adapt to cable trays of different lengths. The deformability of the rubber pressure pad can compensate for the size differences of cable trays of different specifications. The overall structure is compact and occupies little space, fully meeting the operational needs of cable tray installation in confined spaces such as rooftops. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0025] Figure 2 This is a schematic diagram of a portion of the three-dimensional structure of the present invention.

[0026] Figure 3 This is a three-dimensional installation structure diagram of the mounting frame, bidirectional cylinder, and dual-axis motor of the present invention.

[0027] Figure 4 This is a schematic diagram of the three-dimensional installation structure between the mounting frame, elastic telescopic rod, and pressure plate of the present invention.

[0028] Figure 5 This is the present invention. Figure 4 A magnified view of part A.

[0029] Figure 6 This is a three-dimensional installation structure diagram of the linkage rod, guide frame, and guide rod of the present invention.

[0030] Figure 7 This is the present invention. Figure 6 A magnified view of section B.

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the inner alignment frame of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1. Mounting frame; 2. Alignment mechanism; 11. Two-way cylinder; 12. Dual-axis motor; 13. Threaded rod; 14. Linkage rod; 15. Elastic telescopic rod; 16. Pressure plate; 17. Rubber pressure pad one; 18. Guide frame; 19. Guide rod; 21. Outer alignment frame; 22. Inner alignment frame; 211. Sliding groove; 212. Drive block; 213. Rubber pressure pad two; 214. Adjusting block; 215. Adjusting rod; 100. Cable tray. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1 to 8 This application will be described in further detail.

[0034] This application discloses an auxiliary device for installing cable trays in confined spaces. By initially connecting the ends of the cable trays to be installed and then performing secondary correction, it ensures that the cable trays to be installed will not shift, thus guaranteeing the smoothness of the cable laying path and the quality of installation.

[0035] During the installation of the cable tray 100, the trays supporting the cable tray 100 are first evenly installed in designated locations (such as rooftops). Then, the cable tray 100 is placed between adjacent trays. The initial position of the cable tray 100 requires precise reference positioning. After positioning, holes are drilled in the cable tray 100 and bolts are used to fix it in place. This ensures that the cable tray 100 can be straight and will not be misaligned, preventing the cables from bending or other problems inside the cable tray 100.

[0036] A confined space cable tray installation auxiliary device includes a liftable installation frame 1. An alignment mechanism 2 is installed on the installation frame 1 to assist in the positioning and alignment of two cable trays 100. The alignment mechanism 2 includes two outer alignment frames 21 slidably disposed at the bottom of the installation frame 1. The two outer alignment frames 21 are symmetrically distributed along the length of the installation frame 1. The two outer alignment frames 21 move simultaneously toward each other or away from each other along the installation frame 1 to align and limit the cable tray 100 to be installed with the already installed cable tray 100.

[0037] The bottom of the mounting frame 1 is symmetrically slidably provided with an inner alignment frame 22 along its length direction. This is used to perform secondary positioning of the cable tray 100 to ensure that the cable tray 100 to be installed is flush with the already installed cable tray 100. The inner alignment frame 22 is a telescopic structure that can be lengthened according to the length of different cable trays 100.

[0038] Along Figure 1 The arrow indicates the installation direction of the cable tray 100. The cable tray 100 is an upward-opening U-shaped structure. The installation frame 1 can be moved up and down by existing lifting equipment (lifting cylinder or hoisting equipment). A connecting protrusion connected to the existing lifting equipment is provided at any end of the installation frame 1.

[0039] In practice, the first cable tray 100 (i.e. the cable tray 100 at the reference position) is placed between the two trays at the starting position, and the cable tray 100 is aligned so that it is perpendicular to the two trays on the plane. Then, the workers use an electric drill to drill holes, place bolts in the drilled holes, and finally use bolts to fix the cable tray 100 at the reference position onto the tray.

[0040] The remaining cable trays 100 are placed one by one between adjacent cable trays 100, so that the cable trays 100 are connected end to end. The connecting protrusion is connected to the lifting end of the existing lifting equipment. Then, the installation frame 1 is moved to the vicinity of the cable tray 100 by the existing lifting equipment, so that the inner alignment frame 22 and the outer alignment frame 21 on the same side are located on the inner and outer sides of the corresponding vertical section of the cable tray 100, respectively. At this time, the inner alignment frame 22 is aligned with the connection point of the cable tray 100 to be installed and the cable tray 100 already installed on the corresponding side, and the outer alignment frame 21 is aligned with the connection point of the cable tray 100 to be installed and the cable tray 100 already installed on the corresponding side. At this time, the outer alignment frame 21 is located outside the cable tray 100, and the inner alignment frame 22 is located inside the cable tray 100.

[0041] First, the outer alignment frame 21 is driven to move towards the other side. During the movement, the outer alignment frame 21 directly acts on the cable tray 100 to be installed, causing it to move synchronously towards the installed cable tray 100. When the outer alignment frame 21 comes into contact with the side wall of the installed cable tray 100, the outer alignment frame 21 stops moving due to the obstruction of the installed cable tray. Under this synchronous drive, the cable tray 100 to be installed stops moving along with the outer alignment frame 21 and no longer moves closer. Thus, it achieves initial docking and alignment with the installed cable tray 100 and completes initial limiting, ensuring that the two maintain relative limiting alignment during subsequent installation.

[0042] In addition, the inner alignment frame 22 is driven to move apart. During the movement, the inner alignment frame 22 directly acts on the cable tray 100 to be installed. During this process, the inner alignment frame 22 is simultaneously driven to unfold and extend by external driving force (cylinder, manual pulling, etc.). When the inner alignment frame 22 comes into contact with the side wall of the installed cable tray 100, the inner alignment frame 22 stops moving due to the obstruction of the installed cable tray.

[0043] Considering the relatively long overall length of the cable tray 100, relying solely on end positioning can easily lead to positional deviations: that is, although the end of the cable tray 100 to be installed that is close to the already installed cable tray can achieve initial alignment, the far end of the cable tray 100 that is far from the already installed cable tray is still prone to lateral displacement or misalignment. By using a retractable inner alignment frame 22, a secondary limit and attitude correction can be formed in the far end area of ​​the cable tray 100 to be installed, effectively constraining its far end lateral displacement, thereby ensuring that the overall axis of the cable tray 100 to be installed is consistent with that of the already installed cable tray 100, and ensuring that the cable tray 100 to be installed is aligned with the already installed cable tray 100 as a whole.

[0044] The retractable inner alignment frame 22 is composed of multiple plates that slide against each other.

[0045] A bidirectional cylinder 11 is mounted on the side of the mounting frame 1 via a cylinder seat. An outer alignment frame 21 is mounted on the telescopic end of the bidirectional cylinder 11 on the corresponding side via a connecting block. A dual-axis motor 12 is mounted on the top of the mounting frame 1 via a motor seat. A threaded rod 13 is mounted on the output shaft of the dual-axis motor 12. A linkage rod 14 is mounted on the inner alignment frame 22. The linkage rod 14 is slidably mounted on the mounting frame 1, and the threaded rod 13 is connected to the linkage rod 14 via a threaded connection.

[0046] The telescopic ends of the bidirectional cylinder 11 can extend and retract synchronously. The CP96SDB40-200W series from the SMC brand can be used. The dual-axis motor 12 has two symmetrically arranged drive shafts. The JGB37-520 dual-output shaft motor can be used. When the outer alignment frame 21 needs to move, the bidirectional cylinder 11 is activated. During the movement of the telescopic ends of the bidirectional cylinder 11, the outer alignment frame 21 moves synchronously towards or away from each other. The threads of the two threaded rods 13 are opposite. When the inner alignment frame 22 needs to move, the dual-axis motor 12 is activated. During the rotation of the drive shaft of the dual-axis motor 12, the threaded rods 13 rotate. During the rotation of the threaded rods 13, the inner alignment frame 22 moves away from or towards each other through the linkage rod 14.

[0047] The bottom of the mounting frame 1 is equipped with an elastic telescopic rod 15. The bottom of the telescopic end of the elastic telescopic rod 15 is equipped with a pressure plate 16 extending along the length of the cable tray 100. The bottom of the pressure plate 16 is equipped with a rubber pressure pad 17. Guide frames 18 are symmetrically arranged along the width of the pressure plate 16 and are mounted on the pressure plate 16. The linkage rod 14 is equipped with guide rods 19 that correspond one-to-one with the guide frames 18 and have an L-shaped structure. The horizontal end face of the guide rod 19 is mounted on the corresponding linkage rod 14, and the vertical end face of the guide rod 19 abuts against the guide frame 18.

[0048] The guide frame 18 is provided with a guide ramp that cooperates with the vertical section of the guide rod 19.

[0049] When the rubber pressure pad 17 is in the initial position, it spans the connection between the cable tray 100 to be installed and the cable tray 100 that has been installed. In actual operation, the linkage rod 14 moves synchronously with the guide rod 19. During the movement of the guide rod 19, its vertical section drives it to abut against the guide slope. Due to the limitation of the elastic telescopic rod 15, the guide rod 19 drives the guide frame 18 to move downward through the guide slope. During the downward movement of the guide frame 18, the pressure plate 16 moves downward.

[0050] At this time, the elastic telescopic rod 15 is stretched, and the pressure plate 16 moves down, driving the rubber pressure pad 17 to move down synchronously. During the movement of the rubber pressure pad 17, the horizontal section of the cable tray 100 to be installed is kept at the same height and precisely aligned with the horizontal section of the already installed cable tray 100. This effectively avoids misalignment and uneven end faces of adjacent horizontal sections of the cable tray 100, thereby ensuring a smooth subsequent cable laying path and preventing the cable from being affected by the height deviation of the cable tray, thus affecting the normal cable routing and installation quality.

[0051] Because the spacing between the two vertical sections of different cable trays 100 is different, the moving distance of the inner alignment frame 22 is also different. The inner alignment frame 22, through the cooperation of the linkage rod 14 and the guide rod 19, drives the pressure plate 16 to move down a different distance. The deformability of the rubber pressure pad 17 can compensate for the downward movement distance of the pressure plate 16. The pressure plate 16 can press down and limit the cable trays 100 with different spacing between the two vertical sections through the rubber pressure pad 17.

[0052] The outer alignment frame 21 has a sliding groove 211 on the opposite side. A drive block 212 that can automatically reset is slidably arranged inside the sliding groove 211. A rubber pressure pad 213 that cooperates with the cable tray 100 is installed on the drive block 212. An adjustment block 214 is installed on the drive block 212 through a linkage block. A guide slope is provided on the adjustment block 214. An L-shaped adjustment rod 215 is provided on the linkage rod 14. The long half of the adjustment rod 215 is installed on the linkage rod 14, and the short half of the adjustment rod 215 abuts against the guide slope.

[0053] A telescopic elastic rod is installed inside the sliding groove 211. The telescopic end of the telescopic elastic rod is connected to the drive block 212. After the telescopic elastic rod is stretched, it can drive the drive block 212 to reset. During the movement of the outer alignment frame 21, the rubber pressure pad 213 is driven to abut against the outer wall of the vertical section of the cable tray 100. It should be noted that the rubber pressure pad 213 protrudes from the side wall of the outer alignment frame 21 near the cable tray 100. When the outer alignment frame 21 abuts against the outer wall of the vertical section of the cable tray 100, it squeezes the rubber pressure pad 213 to deform and makes it have greater resistance against the vertical section of the cable tray 100.

[0054] During the translational movement of the linkage rod 14, the adjusting rod 215 can be driven to move synchronously. During the displacement process, the short half of the adjusting rod 215 pushes the adjusting block 214 to move through the cooperation of the guide inclined surface. When the adjusting block 214 moves, the driving block 212 is made to form a relative motion tendency through the linkage block.

[0055] Because the reserved gap between the cable tray 100 to be installed and the already installed cable tray 100 is small when the cable tray 100 is in place, the drive block 212 only needs to make a small displacement to complete the clamping action. Therefore, during the movement stroke of the linkage rod 14, the short half of the adjusting rod 215 will not keep in contact with the guide slope for the whole process. The two will only make contact when the inner alignment frame is about to abut against the vertical section of the cable tray 100.

[0056] Under this action, the drive block 212 can smoothly push the cable tray 100 to be installed through the rubber pressure pad 213 to have a tendency to move relative to each other, so that the end face of the cable tray 100 to be installed is tightly fitted and pressed against the end face of the installed cable tray 100, thus making preliminary preparations for the subsequent positioning and fixing of the cable tray 100 to be installed.

[0057] It should be noted that the parts of the outer alignment frame 21 that contact the cable tray 100 and the parts of the inner alignment frame 22 that contact the cable tray 100 are equipped with ball bearings (not shown in the figure), thereby ensuring that the cable tray 100 will not be rigidly pulled or collided with the inner alignment frame 22 and the outer alignment frame 21 under the fine adjustment of the rubber pressure pad 17 and the rubber pressure pad 213.

[0058] Through the above steps, not only can the cable tray 100 be precisely positioned and aligned, but it can also be pre-fixed, creating convenient conditions for subsequent bolt tightening operations. At the same time, during the entire positioning and alignment process, the operating space involved in this invention is limited to the inside of the cable tray 100 and its adjacent area, with a small overall space occupation and good installation adaptability.

[0059] Working principle of the invention: After the device is started, the bidirectional cylinder 11 drives the two outer alignment frames 21 to move towards each other. The outer alignment frames 21 directly act on the outer side wall of the cable tray 100 to be installed, causing it to move towards the installed cable tray 100. When the outer alignment frame 21 abuts against the side wall of the installed cable tray 100, it stops moving. The cable tray 100 to be installed also stops moving synchronously. At this time, the two cable trays 100 complete the initial docking and alignment, realizing the initial horizontal limit of the end of the cable tray 100, and avoiding lateral misalignment in subsequent processes.

[0060] The dual-axis motor 12 drives the linkage rod 14 through the threaded rod 13, which drives the telescopic inner alignment frame 22 to move away from the inner side of the cable tray 100. The inner alignment frame 22 can freely extend along the length of the cable tray 100. When the inner alignment frame 22 abuts against the inner wall of the installed cable tray 100, it stops. By constraining the lateral displacement of the far end of the cable tray 100 to be installed through the whole-section contact, it corrects the overall offset that may occur if the end positioning is used alone, and ensures that the cable tray 100 to be installed is completely consistent with the installed cable tray 100, so as to achieve precise horizontal alignment of the entire section of the cable tray 100.

[0061] When the linkage rod 14 moves, it synchronously drives the guide rod 19 to move. The vertical section of the guide rod 19 generates a downward component force through the guide slope of the guide frame 18, which overcomes the elastic force of the elastic telescopic rod 15 and drives the pressure plate 16 to move down. The rubber pressure pad 17 at the bottom of the pressure plate 16 simultaneously presses the upper surface of the horizontal section of the two cable trays 100. The elastic deformation of the rubber adapts to the dimensional error of different specifications of cable trays 100, ensuring that the horizontal section of the cable tray 100 to be installed is completely consistent with that of the installed cable tray 100, eliminating the problem of height misalignment and ensuring the flatness of the subsequent cable laying path.

[0062] The linkage rod 14 synchronously drives the adjusting rod 215 to move. When the inner alignment frame 22 is about to abut the side wall of the cable tray 100, the short half of the adjusting rod 215 contacts the guide slope of the adjusting block 214. The slope drives the adjusting block 214 to move, and then the linkage block drives the drive block 212 to move slightly. The rubber pressure pad 213 at the front end of the drive block 212 presses against the outer wall of the cable tray 100 to be installed. Through friction, the end face of the cable tray 100 to be installed is completely pressed against the end face of the installed cable tray 100, achieving pre-fixation. The whole set of actions is completed only inside and around the cable tray 100, without the need for additional operating space, making it suitable for narrow and restricted construction scenarios.

[0063] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0064] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An auxiliary device for installing cable trays in confined spaces, characterized in that: It includes a liftable mounting frame (1), on which an alignment mechanism (2) is installed to assist in the limiting alignment of two cable trays (100). The alignment mechanism (2) includes two outer alignment frames (21) that are symmetrically slidably disposed at the bottom of the mounting frame (1) along the length of the mounting frame (1). The two outer alignment frames (21) can move towards each other or away from each other along the mounting frame (1) at the same time, and are used to align and limit the cable tray (100) to be installed with the cable tray (100) already installed. The bottom of the mounting frame (1) is also symmetrically slidably provided with an inner alignment frame (22) for secondary positioning of the cable tray (100) along its length direction. The inner alignment frame (22) is a telescopic structure that can be lengthened according to the length of the cable tray (100).

2. The confined space cable tray installation auxiliary device according to claim 1, characterized in that: The mounting frame (1) has a connecting protrusion at one end for connecting with existing lifting equipment, and the existing lifting equipment can drive the mounting frame (1) to move up and down.

3. The confined space cable tray installation auxiliary device according to claim 1, characterized in that: The inner alignment frame (22) is made of multiple plates that slide and splice together, and can be freely extended to adapt to cable trays (100) of different lengths.

4. The confined space cable tray installation auxiliary device according to claim 1, characterized in that: The mounting frame (1) has a bidirectional cylinder (11) mounted on its side via a cylinder seat. The outer alignment frame (21) is connected to the telescopic end of the corresponding side of the bidirectional cylinder (11) via a connecting block. The bidirectional cylinder (11) can drive the two outer alignment frames (21) to move towards each other or away from each other.

5. The confined space cable tray installation auxiliary device according to claim 1, characterized in that: A dual-axis motor (12) is mounted on the top of the mounting frame (1) via a motor mount. A threaded rod (13) is mounted on the output shaft of the dual-axis motor (12). A linkage rod (14) is mounted on the inner alignment frame (22) and is slidably disposed on the mounting frame (1). The threaded rod (13) is threadedly connected to the linkage rod (14). The dual-axis motor (12) can drive the linkage rod (14) through the threaded rod (13) to drive the inner alignment frame (22) to move towards or away from each other.

6. The confined space cable tray installation auxiliary device according to claim 5, characterized in that: The bottom of the mounting frame (1) is equipped with an elastic telescopic rod (15), and the bottom of the telescopic end of the elastic telescopic rod (15) is equipped with a pressure plate (16) extending along the length direction of the cable tray (100). The bottom of the pressure plate (16) is equipped with a rubber pressure pad (17) for pressing the horizontal section of the cable tray (100).

7. The confined space cable tray installation auxiliary device according to claim 6, characterized in that: The pressure plate (16) is symmetrically provided with guide frames (18) in the width direction. The linkage rod (14) is equipped with L-shaped guide rods (19) that correspond one-to-one with the guide frames (18). The guide frame (18) is provided with a guide slope that cooperates with the vertical section of the guide rod (19). When the linkage rod (14) moves, the pressure plate (16) can be driven to move up and down through the cooperation of the guide rod (19) and the guide slope.

8. The confined space cable tray installation auxiliary device according to claim 1, characterized in that: The outer alignment frame (21) has a sliding groove (211) on its opposite side. A drive block (212) that can automatically reset is slidably arranged in the sliding groove (211). A rubber pressure pad (213) that cooperates with the cable tray (100) is installed on the drive block (212). A telescopic elastic rod for driving the drive block (212) to reset is installed in the sliding groove (211).

9. The confined space cable tray installation auxiliary device according to claim 8, characterized in that: The drive block (212) is connected to the adjustment block (214) via the linkage block. The adjustment block (214) is provided with a guide slope. An L-shaped adjustment rod (215) is installed on the linkage rod (14). The short half of the adjustment rod (215) abuts against the guide slope. When the linkage rod (14) moves, the drive block (212) can be pushed to move through the cooperation of the adjustment rod (215) and the guide slope.

10. The confined space cable tray installation auxiliary device according to claim 1, characterized in that: The outer alignment frame (21) and inner alignment frame (22) are equipped with ball bearings in the parts that contact the cable tray (100) to prevent the cable tray (100) from being rigidly pulled or collided with the outer alignment frame (21) and inner alignment frame (22).

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