Acid and alkali corrosion resistant lightweight cable bridge

Abstract

The invention relates to the technical field of cable bridges, and discloses an acid and alkali corrosion resistant light cable bridge which solves the problem that an existing cable bridge is poor in use effect, the cable bridge comprises a bridge body and a plurality of U-shaped hanging brackets, a cover plate is arranged at the top end of the bridge body, and a cable laying supporting mechanism is arranged at the bottom of one end of the bridge body. A cable laying guiding and supporting mechanism is arranged in the middle of the interior of the bridge body, a first supporting partition plate is rotationally arranged in the middle of one side of the interior of the bridge body, a second supporting partition plate is rotationally arranged in the middle of the other side of the interior of the bridge body, and a first traction mechanism is arranged at the top end of one side of the bridge body. A second traction mechanism is arranged at the top end of the other side of the bridge body, and the bridge body and the cover plate are each composed of an aluminum alloy base layer, a nickel plating layer, a modified polyethylene plastic layer and a wear-resistant spraying layer. Through the cable bridge, the corrosion resistance can be improved, the cable can be conveniently laid, and the use convenience is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cable bridges, and in particular relates to an acid and alkali corrosion resistant lightweight cable bridge. Background Art

[0002] Cable tray is a device used to support, fix and protect cables. It is usually used in the process of laying cables inside buildings or outdoors. Cable tray helps to organize and manage cables while also ensuring the safety and reliability of cables.

[0003] The existing cable trays have poor acid and alkali corrosion resistance. When the cable trays are used in special environments, they are susceptible to corrosion, which reduces their service life and safety of use. In addition, when laying cables on existing cable trays, it is generally necessary to insert the cables from one end of the cable tray, and then pull the cables to move inside the tray. At this time, the cables will directly produce friction with the tray. At the entrance of the tray, if the resistance is too large, it will cause wear of the cables and deformation of the tray, resulting in poor use effect. Moreover, most of the existing cable trays are single-layer structures, and the number of cables laid is limited. For some double-layer cable trays, the middle partition is generally a fixed structure that cannot be disassembled or moved, which is more troublesome when cables need to be added or replaced in the later stage. Therefore, the present application proposes an acid and alkali corrosion resistant lightweight cable tray to improve the comprehensive performance of the cable tray. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an acid and alkali corrosion resistant lightweight cable tray, which effectively solves the problem of poor use effect of the existing cable tray.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an acid- and alkali-resistant lightweight cable bridge, comprising a bridge body and a plurality of U-shaped hangers, the bridge body being installed inside the U-shaped hanger, a cover plate being arranged at the top end of the bridge body, a cable laying support mechanism being arranged at the bottom of one end of the bridge body, a cable laying guide support mechanism being arranged at the middle position inside the bridge body, a first support partition being rotatably arranged at the middle position on one side of the bridge body, a second support partition being rotatably arranged at the middle position on the other side of the bridge body, a traction mechanism 1 matching the first support partition being arranged at the top end of one side of the bridge body, and a traction mechanism 2 matching the second support partition being arranged at the top end of the other side of the bridge body.

[0006] Preferably, the bridge body and the cover plate are both composed of an aluminum alloy base layer, a nickel-plated layer, a modified polyethylene plastic layer and a wear-resistant sprayed layer, the nickel-plated layer is connected to the outer surface of the aluminum alloy base layer, the modified polyethylene plastic layer is connected to the outer surface of the nickel-plated layer, and the wear-resistant sprayed layer is connected to the outer surface of the modified polyethylene plastic layer.

[0007] Preferably, the cable laying support mechanism is composed of a first support arm, a second support arm, a support roller, a first limit support assembly and a second limit support assembly. The first support arm and the second support arm are respectively rotatably connected to both sides of one end inside the bridge body, the support roller is rotatably connected between the first support arm and the second support arm, the first limit support assembly is connected between the first support arm and the bridge body, the second limit support assembly is connected between the second support arm and the bridge body, and a groove matching the first support arm and the second support arm is opened at the bottom of one end of the bridge body.

[0008] Preferably, the first limit support assembly and the second limit support assembly are both composed of a strip mounting plate, a sleeve, a limit telescopic arm and a locking knob. The strip mounting plate is fixedly connected to the bottom end of the bridge body, the sleeve is rotatably connected to the strip mounting plate, one end of the limit telescopic arm is inserted into the sleeve, and the other end of the limit telescopic arm is rotatably connected to the first support arm and the second support arm. The locking knob is inserted into one end of the side of the sleeve and matches the limit telescopic arm.

[0009] Preferably, the cable laying guide support mechanism is composed of an I-shaped support frame, a first support plate, a second support plate and a plurality of supporting rollers. The I-shaped support frame is fixedly connected to the middle position of the bottom end inside the bridge frame body, the first support plate and the second support plate are respectively fixedly connected to the two sides of the top of the I-shaped support frame, and a limiting groove is formed between the first support plate, the second support plate and the I-shaped support frame, and the supporting roller is rotatably connected to the bottom end inside the limiting groove.

[0010] Preferably, the first support baffle and the second support baffle are rotatably connected to the inner side of the bridge frame body via a plurality of hinges, and a hanging ring matching the traction mechanism one and the traction mechanism two is fixedly provided on one side of the top end of the first support baffle and the second support baffle.

[0011] Preferably, the traction mechanism one and the traction mechanism two are both composed of a driving assembly, a first traction steel rope, a first hook, a second traction steel rope and a second hook, the driving assembly is connected to the middle position of the side of the bridge body, the first traction steel rope and the second traction steel rope are both connected to the driving assembly, and the first hook and the second hook are respectively fixedly connected to the first traction steel rope and the second traction steel rope and matched with the hanging ring.

[0012] Preferably, a clamping sleeve matching the driving assembly is fixedly provided in the middle position of the side of the bridge body, and a first guide sleeve and a second guide sleeve matching the first traction steel rope and the second traction steel rope are respectively inserted at both ends of the side of the bridge body.

[0013] Preferably, the drive assembly consists of a shell, a double-groove rope pulley, a worm wheel, a center shaft, a worm and a rotating handwheel. The shell is inserted and connected to the clamping sleeve, the center shaft is rotatably connected to the center position inside the shell, the double-groove rope pulley and the worm wheel are both sleeved on the center shaft and fixedly connected to it, the worm is inserted and connected to the bottom end inside the shell, and the rotating handwheel is fixedly connected to one end of the worm.

[0014] Preferably, a positioning sleeve 1 matching the first traction steel rope is inserted into the bottom end of one side of the shell, a positioning sleeve 2 matching the second traction steel rope is inserted into the top end of the other side of the shell, and a mounting support and a mounting sleeve matching the worm are respectively provided on both sides of the bottom end inside the shell, and the worm is inserted into the mounting support and the mounting sleeve and is rotatably connected thereto.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) During operation, by providing a bridge body and a cover plate composed of an aluminum alloy base layer, a nickel-plated layer, a modified polyethylene plastic layer and a wear-resistant spray layer, the overall acid and alkali corrosion resistance can be improved, thereby increasing the service life of the cable bridge;

[0017] (2) By providing a cable laying support mechanism consisting of a first support arm, a second support arm, a support roller, a first limit support assembly and a second limit support assembly, and a cable laying guide support mechanism consisting of an I-shaped support frame, a first support plate, a second support plate and a plurality of support rollers, it is possible to achieve active support for the cable during cable laying, thereby avoiding damage to the cable and deformation of the bridge caused by direct friction between the cable and the bridge. By providing a first limit support assembly and a second limit support assembly consisting of a strip mounting plate, a sleeve, a limit telescopic arm and a locking knob, it is possible to achieve limit fixation of the cable laying support mechanism and improve its stability.

[0018] (3) By setting up the first supporting partition and the second supporting partition, double-layer support for the cable can be achieved, thereby increasing the number of cables to be laid. By setting up a traction mechanism 1 and a traction mechanism 2 composed of a driving assembly, a first traction steel rope, a first hook, a second traction steel rope and a second hook, the first supporting partition and the second supporting partition can be pulled when the bottom layer of cables are laid or replaced, so that the first supporting partition and the second supporting partition are separated from the cable laying guide support mechanism, thereby improving the convenience of cable laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is one of the side views of the acid and alkali corrosion resistant lightweight cable tray of the present invention;

[0022] Figure 2 This is the second side view of the acid and alkali corrosion resistant lightweight cable tray of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the main layer of the bridge frame of the present invention;

[0024] Figure 4 This is one of the cross-sectional views of the acid and alkali corrosion resistant lightweight cable tray of the present invention;

[0025] Figure 5 This is the second cross-sectional view of the acid and alkali corrosion resistant lightweight cable tray of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the cable laying support mechanism of the present invention;

[0027] Figure 7 For the present invention Figure 2 A partial enlarged view of

[0028] Figure 8 This is a schematic diagram of the cable laying guide support mechanism structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the connection structure between the first supporting partition and the traction mechanism of the present invention;

[0030] Fig.10 It is a structural schematic diagram of a traction mechanism of the present invention;

[0031] Fig.11 This is a schematic diagram of the internal structure of the drive assembly of the present invention;

[0032] In the figure: 1. bridge body; 2. U-shaped hanger; 3. cover plate; 4. cable laying support mechanism; 5. cable laying guide support mechanism; 6. first support partition; 7. second support partition; 8. traction mechanism one; 9. traction mechanism two; 10. aluminum alloy base layer; 11. nickel plating layer; 12. modified polyethylene plastic layer; 13. wear-resistant spray layer; 14. first support arm; 15. second support arm; 16. support roller; 17. first limit support assembly; 18. second limit support assembly; 19. groove; 20. strip mounting plate; 21. sleeve; 22. limit telescopic arm; 23. lock Tightening knob; 24, I-shaped support frame; 25, first support plate; 26, second support plate; 27, supporting roller; 28, limiting groove; 29, hinge; 30, hanging ring; 31, driving assembly; 32, first traction steel rope; 33, first hook; 34, second traction steel rope; 35, second hook; 36, clamping sleeve; 37, first guide sleeve; 38, second guide sleeve; 39, housing; 40, double-groove rope pulley; 41, worm gear; 42, central shaft; 43, worm; 44, rotating handwheel; 45, positioning sleeve one; 46, positioning sleeve two; 47, mounting support; 48, mounting sleeve. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Embodiment 1, by Figures 1 to 5 The present invention provides an acid-base corrosion-resistant lightweight cable bridge, which includes a bridge body 1 and a plurality of U-shaped hangers 2. The bridge body 1 is installed inside the U-shaped hanger 2. A cover plate 3 is provided at the top of the bridge body 1. A cable laying support mechanism 4 is provided at the bottom of one end of the bridge body 1. A cable laying guide support mechanism 5 is provided at the middle position inside the bridge body 1. A first support partition 6 is rotatably provided at the middle position on one side of the bridge body 1. A second support partition 7 is rotatably provided at the middle position on the other side of the bridge body 1. A traction mechanism 8 matching the first support partition 6 is provided at the top of one side of the bridge body 1. A traction mechanism 9 matching the second support partition 7 is provided at the top of the other side of the bridge body 1.

[0035] The bridge body 1 is hoisted by the U-shaped hanger 2, the cable laying support mechanism 4 and the cable laying guide support mechanism 5 can assist the cable laying operation, the first support partition 6 and the second support partition 7 can make the bridge form a double-layer structure to increase the number of cables laid, and the first support partition 6 and the second support partition 7 can be adjusted in angle by the traction mechanism 1 8 and the traction mechanism 2 9;

[0036] The bridge body 1 and the cover plate 3 are both composed of an aluminum alloy base 10, a nickel-plated layer 11, a modified polyethylene plastic layer 12 and a wear-resistant sprayed layer 13, wherein the nickel-plated layer 11 is connected to the outer surface of the aluminum alloy base 10, the modified polyethylene plastic layer 12 is connected to the outer surface of the nickel-plated layer 11, and the wear-resistant sprayed layer 13 is connected to the outer surface of the modified polyethylene plastic layer 12;

[0037] The combined bridge body 1 and cover plate 3 structure composed of the aluminum alloy base layer 10, the nickel plating layer 11, the modified polyethylene plastic layer 12 and the wear-resistant spray layer 13 can improve the overall acid and alkali corrosion resistance of the bridge body 1 and the cover plate 3 and increase the service life of the bridge body 1 and the cover plate 3.

[0038] Embodiment 2, based on embodiment 1, Figure 1 , Figure 2 , Figure 6 and Figure 7 The cable laying support mechanism 4 is composed of a first support arm 14, a second support arm 15, a support roller 16, a first limit support assembly 17 and a second limit support assembly 18. The first support arm 14 and the second support arm 15 are respectively rotatably connected to both sides of one end of the bridge body 1, the support roller 16 is rotatably connected between the first support arm 14 and the second support arm 15, the first limit support assembly 17 is connected between the first support arm 14 and the bridge body 1, the second limit support assembly 18 is connected between the second support arm 15 and the bridge body 1, and the bottom of one end of the bridge body 1 is provided with a first limit support assembly 17 and a second limit support assembly 18. A groove 19 matching a support arm 14 and a second support arm 15, a first limit support assembly 17 and a second limit support assembly 18 are both composed of a strip mounting plate 20, a sleeve 21, a limit telescopic arm 22 and a locking knob 23, the strip mounting plate 20 is fixedly connected to the bottom end of the bridge body 1, the sleeve 21 is rotatably connected to the strip mounting plate 20, one end of the limit telescopic arm 22 is inserted into the sleeve 21, and the other end of the limit telescopic arm 22 is rotatably connected to the first support arm 14 and the second support arm 15, and the locking knob 23 is inserted into one end of the side of the sleeve 21 and matches the limit telescopic arm 22;

[0039] When laying the cable, the limiting telescopic arm 22 is pulled out from the inside of the sleeve 21 and locked and fixed by the locking knob 23. The limiting telescopic arm 22 supports the first support arm 14 and the second support arm 15, so that the first support arm 14 and the second support arm 15 are in an inclined state, thereby driving the supporting roller 16 to move upward to support the cable. The cable is inserted along one end of the bridge body 1 and is located on the top of the supporting roller 16. During the movement of the cable, friction with the bridge body 1 can be avoided, thereby avoiding damage to the cable and the bridge, and the convenience of cable laying is improved. After the cable laying is completed, the supporting roller 16 can be reset.

[0040] Embodiment 3, based on embodiment 1, Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 It is given that the cable laying guide support mechanism 5 is composed of an I-shaped support frame 24, a first support plate 25, a second support plate 26 and a plurality of support rollers 27. The I-shaped support frame 24 is fixedly connected to the middle position of the bottom end inside the bridge frame body 1, the first support plate 25 and the second support plate 26 are respectively fixedly connected to the two sides of the top of the I-shaped support frame 24, and a limiting groove 28 is formed between the first support plate 25 and the second support plate 26 and the I-shaped support frame 24, and the support roller 27 is rotatably connected to the bottom end inside the limiting groove 28;

[0041] When laying the cables, the cables inside the bridge body 1 are supported by the supporting rollers 27, further avoiding friction between the cables and the bridge body 1, and improving the convenience of laying. The first supporting plate 25 and the second supporting plate 26 can support the first supporting partition 6 and the second supporting partition 7, thereby improving the stability of the first supporting partition 6 and the second supporting partition 7;

[0042] The first supporting partition 6 and the second supporting partition 7 are rotatably connected to the inner side of the bridge body 1 through a plurality of hinges 29, and a hanging ring 30 matching with the traction mechanism 1 8 and the traction mechanism 2 9 is fixedly provided on one side of the top of the first supporting partition 6 and the second supporting partition 7;

[0043] The hinge 29 can improve the mobility of the first supporting partition 6 and the second supporting partition 7, and can be connected to the traction mechanism 1 8 and the traction mechanism 2 9 through the hanging ring 30, so that the first supporting partition 6 and the second supporting partition 7 can be driven to rotate around the hinge 29 by the traction mechanism 1 8 and the traction mechanism 2 9, so as to facilitate the laying of the bottom cable;

[0044] The traction mechanism 1 8 and the traction mechanism 2 9 are both composed of a driving assembly 31, a first traction steel rope 32, a first hook 33, a second traction steel rope 34 and a second hook 35. The driving assembly 31 is connected to the middle position of the side of the bridge body 1, the first traction steel rope 32 and the second traction steel rope 34 are both connected to the driving assembly 31, the first hook 33 and the second hook 35 are respectively fixedly connected to the first traction steel rope 32 and the second traction steel rope 34 and matched with the hanging ring 30, and a clamping sleeve 36 matching the driving assembly 31 is fixedly provided at the middle position of the side of the bridge body 1, and the first guide sleeve 37 and the second guide sleeve 38 matching the first traction steel rope 32 and the second traction steel rope 34 are respectively inserted at both ends of the side of the bridge body 1. The driving assembly 31 is composed of a housing 39, a double-groove pulley 40, a worm gear 4 1. It is composed of a central rotating shaft 42, a worm 43 and a rotating hand wheel 44. The housing 39 is inserted and connected to the clamping sleeve 36. The central rotating shaft 42 is rotatably connected to the center position inside the housing 39. The double-groove rope wheel 40 and the worm wheel 41 are both sleeved on the central rotating shaft 42 and fixedly connected thereto. The worm 43 is inserted and connected to the bottom end inside the housing 39. The rotating hand wheel 44 is fixedly connected to one end of the worm 43. A positioning sleeve 1 45 matching the first traction steel rope 32 is inserted at the bottom end of one side of the housing 39. A positioning sleeve 2 46 matching the second traction steel rope 34 is inserted at the top end of the other side of the housing 39. A mounting support 47 and a mounting sleeve 48 matching the worm 43 are respectively provided on both sides of the bottom end inside the housing 39. The worm 43 is inserted in the mounting support 47 and the mounting sleeve 48 and rotatably connected thereto.

[0045] When the traction mechanism 1 8 and the traction mechanism 2 9 are working, the rotating hand wheel 44 is rotated, and the worm 43 is driven to rotate by the rotating hand wheel 44, and the worm 43 drives the worm wheel 41 to rotate, thereby driving the central shaft 42 and the double groove rope wheel 40 to rotate, and the first traction steel rope 32 and the second traction steel rope 34 are wound up by the double groove rope wheel 40, and the first traction steel rope 32 and the second traction steel rope 34 drive the first support partition 6 and the second support partition 7 to rotate around the hinge 29, at this time, a space is formed between the first support partition 6 and the second support partition 7. The structure is formed into an open structure, so that it is convenient for the staff to lay or replace the bottom cable. The first guide sleeve 37, the second guide sleeve 38, the positioning sleeve 1 45 and the positioning sleeve 2 46 can be used to limit and guide the first traction steel rope 32 and the second traction steel rope 34. The driving component 31 can be clamped and installed through the clamping sleeve 36, which also facilitates the disassembly of the driving component 31. After the cable is laid, the traction mechanism 1 8 and the traction mechanism 2 9 can be disassembled as a whole to reduce the weight of the bridge frame body 1.

[0046] During operation, by arranging a bridge frame body and a cover plate composed of an aluminum alloy base layer, a nickel-plated layer, a modified polyethylene plastic layer and a wear-resistant spray layer, its overall acid and alkali corrosion resistance can be improved, thereby increasing the service life of the cable bridge frame; by arranging a cable laying support mechanism composed of a first support arm, a second support arm, a supporting roller, a first limit support assembly and a second limit support assembly, and a cable laying guide support mechanism composed of an I-shaped support frame, a first support plate, a second support plate and a plurality of supporting rollers, active support for the cable can be achieved during cable laying, avoiding direct friction between the cable and the bridge frame to cause damage to the cable and deformation of the bridge frame; and by arranging a strip mounting plate, a sleeve, a limit The first limit support assembly and the second limit support assembly composed of the telescopic arm and the locking knob can realize the limit fixation of the cable laying support mechanism to improve its stability; by setting the first support partition and the second support partition, double-layer support of the cable can be achieved to increase the number of cables laid, and by setting the traction mechanism one and the traction mechanism two composed of the driving assembly, the first traction steel rope, the first hook, the second traction steel rope and the second hook, the first support partition and the second support partition can be pulled when the bottom cable is laid or replaced, so that the first support partition and the second support partition are separated from the cable laying guide support mechanism, thereby improving the convenience of cable laying.

Claims

1. A light-weight cable tray resistant to acid and alkali corrosion, comprising a tray body (1) and a plurality of U-shaped hangers (2). Features: The bridge frame body (1) is installed inside the U-shaped hanger (2), a cover plate (3) is arranged at the top of the bridge frame body (1), a cable laying support mechanism (4) is arranged at the bottom of one end of the bridge frame body (1), a cable laying guide support mechanism (5) is arranged at the middle position inside the bridge frame body (1), a first support partition (6) is rotatably arranged at the middle position on one side of the bridge frame body (1), a second support partition (7) is rotatably arranged at the middle position on the other side of the bridge frame body (1), a traction mechanism (8) matching the first support partition (6) is arranged at the top of one side of the bridge frame body (1), and a traction mechanism (9) matching the second support partition (7) is arranged at the top of the other side of the bridge frame body (1).

2. According to claim 1, an acid and alkali corrosion resistant lightweight cable tray, Features: The bridge frame body (1) and the cover plate (3) are both composed of an aluminum alloy base layer (10), a nickel-plated layer (11), a modified polyethylene plastic layer (12) and a wear-resistant sprayed layer (13); the nickel-plated layer (11) is connected to the outer surface of the aluminum alloy base layer (10), the modified polyethylene plastic layer (12) is connected to the outer surface of the nickel-plated layer (11), and the wear-resistant sprayed layer (13) is connected to the outer surface of the modified polyethylene plastic layer (12).

3. According to claim 1, an acid and alkali corrosion resistant lightweight cable tray, Features: The cable laying support mechanism (4) is composed of a first support arm (14), a second support arm (15), a support roller (16), a first limit support assembly (17) and a second limit support assembly (18); the first support arm (14) and the second support arm (15) are respectively rotatably connected to the two sides of one end inside the bridge frame body (1); the support roller (16) is rotatably connected between the first support arm (14) and the second support arm (15); the first limit support assembly (17) is connected between the first support arm (14) and the bridge frame body (1); the second limit support assembly (18) is connected between the second support arm (15) and the bridge frame body (1); and a groove (19) matching the first support arm (14) and the second support arm (15) is provided at the bottom of one end of the bridge frame body (1).

4. According to claim 3, an acid and alkali corrosion resistant lightweight cable tray, Features: The first limit support assembly (17) and the second limit support assembly (18) are both composed of a strip mounting plate (20), a sleeve (21), a limit telescopic arm (22) and a locking knob (23); the strip mounting plate (20) is fixedly connected to the bottom end of the bridge frame body (1); the sleeve (21) is rotatably connected to the strip mounting plate (20); one end of the limit telescopic arm (22) is inserted into the sleeve (21); the other end of the limit telescopic arm (22) is rotatably connected to the first support arm (14) and the second support arm (15); the locking knob (23) is inserted into one end of the side of the sleeve (21) and matches the limit telescopic arm (22).

5. According to claim 1, the acid and alkali corrosion resistant lightweight cable tray, Features: The cable laying guide support mechanism (5) is composed of an I-shaped support frame (24), a first support plate (25), a second support plate (26) and a plurality of support rollers (27); the I-shaped support frame (24) is fixedly connected to the middle position of the bottom end inside the bridge frame body (1); the first support plate (25) and the second support plate (26) are respectively fixedly connected to the two sides of the top end of the I-shaped support frame (24); a limiting groove (28) is formed between the first support plate (25) and the second support plate (26) and the I-shaped support frame (24); and the support roller (27) is rotatably connected to the bottom end inside the limiting groove (28).

6. The acid- and alkali-resistant lightweight cable tray according to claim 1, Features: The first supporting baffle (6) and the second supporting baffle (7) are rotatably connected to the inner side of the bridge frame body (1) via a plurality of hinges (29), and a hanging ring (30) matching with the traction mechanism one (8) and the traction mechanism two (9) is fixedly provided on one side of the top of the first supporting baffle (6) and the second supporting baffle (7).

7. The acid and alkali corrosion resistant lightweight cable tray according to claim 6, Features: The traction mechanism one (8) and the traction mechanism two (9) are both composed of a driving component (31), a first traction steel rope (32), a first hook (33), a second traction steel rope (34) and a second hook (35); the driving component (31) is connected to the middle position of the side of the bridge frame body (1); the first traction steel rope (32) and the second traction steel rope (34) are both connected to the driving component (31); the first hook (33) and the second hook (35) are respectively fixedly connected to the first traction steel rope (32) and the second traction steel rope (34) and matched with the hanging ring (30).

8. The acid and alkali corrosion resistant lightweight cable tray according to claim 7, Features: A clamping sleeve (36) matching the driving assembly (31) is fixedly arranged in the middle position of the side of the bridge frame body (1), and a first guide sleeve (37) and a second guide sleeve (38) matching the first traction steel rope (32) and the second traction steel rope (34) are respectively inserted and arranged at both ends of the side of the bridge frame body (1).

9. The acid- and alkali-resistant lightweight cable tray according to claim 8, Features: The driving assembly (31) is composed of a housing (39), a double-groove rope wheel (40), a worm wheel (41), a central rotating shaft (42), a worm (43) and a rotating hand wheel (44); the housing (39) is inserted and connected to the clamping sleeve (36); the central rotating shaft (42) is rotatably connected to the center position inside the housing (39); the double-groove rope wheel (40) and the worm wheel (41) are both sleeved on the central rotating shaft (42) and fixedly connected thereto; the worm (43) is inserted and connected to the bottom end inside the housing (39); and the rotating hand wheel (44) is fixedly connected to one end of the worm (43).

10. The acid and alkali corrosion resistant lightweight cable tray according to claim 9, Features: A positioning sleeve 1 (45) matching the first traction steel rope (32) is inserted into the bottom end of one side of the shell (39), and a positioning sleeve 2 (46) matching the second traction steel rope (34) is inserted into the top end of the other side of the shell (39). A mounting support (47) and a mounting sleeve (48) matching the worm gear (43) are respectively provided on both sides of the bottom end inside the shell (39), and the worm gear (43) is inserted into the mounting support (47) and the mounting sleeve (48) and is rotatably connected thereto.

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