Precisely assembled cable bridge

Abstract

The invention relates to the technical field of cable bridges, in particular to a precisely assembled cable bridge, which comprises a bridge for placing a cable and a hoisting assembly with horizontal warning and positioning functions, and is characterized in that the hoisting assembly comprises two hoisting arms connected with a wall body, and a support arm capable of being adjusted to a horizontal state is arranged between the two hoisting arms; a lifting plate is arranged right above the supporting arm; when the bridge frame inclines due to internal stress, the deformed bridge frame deforms to cause uneven stress on the supporting arms below the bridge frame, the supporting arms incline in the long-time use process, the attaching plate is displaced, a touch rod at the bottom end of the attaching plate is in contact with an inductive switch, and the touch rod is in contact with the inductive switch. The balls roll in the rolling grooves and are attached to one sides of the inclined inner walls of the rolling grooves to touch the switches, so that the warning lamps at the bottom ends of the supporting arms are turned on, and workers are prompted to quickly position the to-be-maintained portion of the bridge and maintain the bridge and the supporting arms located at the to-be-maintained portion of the bridge.

Description

Technical Field

[0001] The present invention relates to the technical field of cable trays, and specifically to a precisely assembled cable tray. Background Art

[0002] As a rigid structure system for supporting, protecting, and laying cables, cable trays are widely used in fields such as construction, electricity, and communication. Most cable trays are composed of brackets, cantilever arms, installation accessories, etc. After laying, cables can be placed therein to avoid physical damage to the cables by the outside world, and it is convenient for later management, maintenance, and path adjustment.

[0003] During the erection and use of cable trays, the cable trays are assembled and debugged to a horizontal state to avoid stress concentration caused by the inclination of the assembled cable trays, excessive pressure on local positions, and reduction of the service life of the trays. However, when some existing cable trays are debugged to a horizontal state for use, they are prone to deformation of the trays caused by the residual internal stress generated during the welding process, which reduces the structural stability and then causes the trays to deform and tilt. If the staff fails to timely detect the parts to be repaired and perform repairs, it is easy to cause stress concentration due to the inclination of the trays, reducing the service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a precisely assembled cable tray to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A precisely assembled cable tray, comprising a cable tray for placing cables and a number of hoisting components with horizontal warning and positioning functions. The hoisting components include two boom arms connecting to the wall, a cantilever arm adjustable to a horizontal state is arranged between the two boom arms, a lifting plate is arranged directly above the cantilever arm, side mounting plates are arranged on both the left and right sides of the lifting plate, heat-sensitive support tubes with overheat detection effects are arranged at the tops of the side mounting plates, a mounting frame for supporting the cable tray is jointly attached to the tops of the two heat-sensitive support tubes, extension plates and fixing plates are arranged on the side mounting plates, a touch rod with a lifting function is arranged on the extension plate, a fitting plate fitting the mounting frame is arranged at the top of the touch rod, two rolling grooves are arranged on the fixing plate, balls are movably placed in the rolling grooves, touch switches and induction switches are respectively arranged on the inner walls of the rolling grooves and the tops of the fixing plates, warning lights for warning the inclination of the cable tray and the cantilever arm are arranged at the bottom of the cantilever arm and are connected to the touch switches and induction switches through wires, the two rolling grooves are connected through a through-flow groove, a liquid guide plate for storing oil is arranged on the mounting frame, the liquid guide plate is connected to the through-flow groove through a guide pipe, and material placing plates capable of absorbing the heat on the surface of the cable are arranged on the liquid guide plates.

[0006] Two fixing frames are arranged at the top end of the side mounting plate. Lifting blocks are movably installed in the fixing frames. An alarm is arranged at the bottom end of the support arm. A switch connected to the alarm through a circuit is arranged in the fixing frame. Four touch blocks for contacting the lifting blocks are arranged on the support frame. When the cable in the bridge is locally overheated, causing the surrounding thermosensitive support tubes to break, the touch blocks can push the lifting blocks into the fixing frames to contact the switch, causing the alarm to sound.

[0007] A protective cylinder is movably sleeved on the outer wall of the touch rod. A cover plate is fixedly sleeved on the outer wall of the protective cylinder. The cover plate is fixedly installed at the top end of the fixing plate to cover and conceal the rolling groove and the flow-through groove.

[0008] Two threaded through holes are arranged on the support arm. Threaded rods are arranged in the two threaded through holes. First nuts are sleeved on the outer walls of the threaded rods. The threaded rods penetrate through the support arm and are connected to the lifting arm, and the position of the support arm is fixed by the first nuts.

[0009] Mounting plates are fixedly installed on both of the two side mounting plates. Sliding grooves are arranged on the mounting plates. Translation blocks are slidably installed in the sliding grooves. Support plates are installed on the translation blocks. Two triangular blocks are arranged at the bottom end of the support frame. The surfaces of the two triangular blocks that are in contact with the support plates are inclined surfaces.

[0010] T-shaped sliding grooves are arranged on the inner walls of the sliding grooves. T-shaped sliding blocks are arranged in the T-shaped sliding grooves. The T-shaped sliding blocks are fixedly connected to the translation blocks.

[0011] The inner walls of the sliding grooves on the mounting plates and the translation blocks are connected by second connecting springs.

[0012] Convex blocks are fixedly installed on the front and rear side walls of the bridge. Support screws for temporarily supporting the bridge are arranged on the convex blocks.

[0013] Two lifting rods are arranged at the bottom end of the lifting plate. The lifting rods penetrate through the support arm and extend below the support arm.

[0014] Two grooves are arranged at the top end of the lifting plate. Directional plates for vertically lifting along with the support frame are arranged in the two grooves. Springs are connected between the bottom ends of the directional plates and the inner walls of the grooves.

[0015] An adjusting screw rod is rotatably installed at the bottom end of the lifting plate. The adjusting screw rod penetrates through the support arm and extends below the support arm.

[0016] Four threaded grooves are arranged at the bottom end of the support frame. Screw rods that can contact the lifting blocks are arranged in the threaded grooves.

[0017] Compared with the prior art, the present invention has the following beneficial effects: According to the present invention, when the bridge frame tilts due to internal stress, the deformed bridge frame will cause uneven force on the support arm below it due to the deformation, causing the support arm to tilt during long-term use, causing the bonding plate to shift, and the touch rod at the bottom end of the bonding plate contacts the sensing switch, and the ball rolls in the rolling groove and touches the switch on one side of the inner wall of the tilted rolling groove, so that the warning light at the bottom of the support arm lights up, prompting the staff to quickly locate the part of the bridge frame to be repaired and repair the bridge frame and the support arm at that part.

[0018] By filling the placing plate with oil with low viscosity, when the cables in the bridge are powered on, heat will be generated on their surfaces, and the heat will be transferred to the oil through the copper plate that absorbs heat efficiently. The oil will flow after being heated, causing the oil in the rolling groove to flow through the flow groove, the guide pipe, and the liquid guide plate to the placing plate. The oil is in a slow-flowing state to prevent it from being too viscous, causing the balls to stick to the inner wall of the rolling groove and being unable to roll when the bridge is tilted.

[0019] Through the thermistor support tube, when the heat dissipation of the cable is unbalanced, the overheated cable transfers the heat to the thermistor support tube through the support frame. When the thermistor support tube breaks due to high temperature, the support frame moves downward due to the weight of the bridge frame, and when the support frame moves downward, it drives the screw rod to move and press the lifting block into the fixed frame. When the switch in the fixed frame is triggered, the alarm is turned on and an alarm is sounded, which is convenient for the staff to quickly locate the position of the cable overheating fault and carry out maintenance, avoiding the slow efficiency of the staff in troubleshooting the fault point when the cable fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the internal structure of the bridge frame of the present invention.

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0023] Figure 4 It is a schematic diagram of the structure of the lifting assembly of the present invention.

[0024] Figure 5 It is a schematic diagram of the local structure of the lifting assembly of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the bracket of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the liquid guide plate of the present invention.

[0027] Figure 8 For the present invention Figure 7 Schematic enlarged view of the structure at position B in the present invention.

[0028] Figure 9 Schematic view of the extension plate structure of the present invention.

[0029] Figure 10 Schematic view of the mounting plate structure of the present invention.

[0030] In the figure: 1, bridge frame; 2, hoisting assembly; 3, boom; 4, bracket arm; 5, threaded rod; 6, first nut; 7, bump; 8, support screw; 9, adjusting screw; 10, lifting plate; 11, lifting rod; 12, guiding plate; 13, side mounting plate; 14, thermosensitive support tube; 15, fixing frame; 16, lifting block; 17, supporting frame; 18, extension plate; 19, fitting plate; 20, touch rod; 21, first connecting spring; 22, fixing plate; 23, induction switch; 24, rolling groove; 25, ball; 26, touch switch; 27, flow-through groove; 28, diversion tube; 29, liquid guide plate; 30, material placing plate; 31, connecting plate; 32, inserted rod; 33, protective cylinder; 34, cover plate; 35, mounting plate; 36, translation block; 37, second connecting spring; 38, support plate; 39, triangular block; 40, warning lamp. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 to 10, the present invention provides a technical solution: a precision-assembled cable tray, comprising a cable tray 1 for placing cables, and a hoisting assembly 2 for detecting whether the cable tray 1 is in a vertical state. The hoisting assembly 2 includes two boom arms 3 connected to the wall. The boom arms 3 are fixed in position by passing existing wall connecting screws through the boom arms 3 and connecting to the wall. A support arm 4 is provided between the two boom arms 3. There are two threaded through holes on the support arm 4. Threaded rods 5 are provided in the threaded through holes on the two support arms 4. First nuts 6 are movably sleeved on the outer walls of the threaded rods 5. A number of openings are provided on the boom arms 3 for the support arm 4 to be adjusted to a horizontal state, and the width of the openings is the same as the diameter of the threaded rods 5. By controlling the threaded rods 5 to penetrate through the support arm 4 and pass through the openings on the boom arms 3, and then controlling the first nuts 6 to rotate and tighten on the outer walls of the threaded rods 5, the position can be fixed after the support arm 4 is adjusted to a horizontal state. A convex block 7 is provided on each of the front and rear side walls of the support arm 4, and a support screw 8 is provided on each of the two convex blocks 7. The cable tray 1 is temporarily supported by the support screw 8, which facilitates the installation of the material placing plate 30 in the cable tray 1. After the installation of the material placing plate 30 is completed, the support screw 8 is controlled to rotate downward until it disengages from the contact with the cable tray 1 until the cable tray 1 is placed on the top of the support frame 17.

[0033] The support arm 4 is provided with an adjusting screw rod 9. The top end of the adjusting screw rod 9 is rotatably installed with a lifting plate 10. The bottom end of the lifting plate 10 is fixedly installed with two lifting rods 11. The lifting rods 11 all penetrate through the support arm 4 and extend below the support arm 4. The lifting rods 11 facilitate the vertical lifting movement of the lifting plate 10 during the rotation of the adjusting screw rod 9. The top end of the lifting plate 10 is provided with two guiding plates 12. The top end of the lifting plate 10 is provided with two grooves matching the length and width dimensions of the guiding plates 12. Springs are arranged in the grooves. The upper and lower ends of the springs are fixedly connected to the inner walls of the grooves and the bottom plates of the guiding plates 12, which facilitates the guiding plates 12 to move downward synchronously during the downward movement of the support frame 17 following the bridge frame 1. A support frame 17 for supporting the bridge frame 1 is arranged between the two guiding plates 12. The left and right sides of the lifting plate 10 are fixedly installed with side mounting plates 13. The top ends of the two side mounting plates 13 are fixedly installed with heat-sensitive support tubes 14. The heat-sensitive support tubes 14 are used to support the support frame 17, and the heat-sensitive support tubes 14 are all made of heat-sensitive glass tubes in the prior art. The heat-sensitive support tubes 14 can automatically melt at high temperatures. Touching blocks are arranged on the front and rear side walls of the support frame 17. Threaded grooves are arranged at the bottom ends of the touching blocks. Screws are arranged in the threaded grooves. By controlling the rotation of the screws, it is convenient to contact the lifting blocks 16 during the downward movement of the support frame 17, avoiding the situation that the touching blocks cannot contact the lifting blocks 16 due to the small movement space of the guiding plates 12. Two fixed frames 15 are arranged on the top plates of the side mounting plates 13. Lifting blocks 16 are movably installed in the two fixed frames 15. The lifting blocks 16 are all directly below the touching blocks. An alarm is arranged at the bottom end of the support arm 4. The alarm is built-in with a power supply. A switch is arranged in the fixed frame 15, and the switch adopts a contact switch in the prior art. The switch is connected to the alarm through a circuit.

[0034] During the long-term use of the cable, if the insulation of a local part of the cable is damaged or the resistance is too large (i.e., the cross-section is too small), resulting in a heat dissipation imbalance, causing local overheating of the cable. At this time, the overheated cable transfers the heat to the heat-sensitive support tube 14 through the support frame 17. When the heat-sensitive support tube 14 breaks due to high temperature, the support frame 17 moves downward under the influence of the weight of the bridge frame 1, and drives the screw to displace and press the lifting block 16 into the fixed frame 15 during the downward movement of the support frame 17. When the switch in the fixed frame 15 is touched, the alarm is turned on to emit an alarm, which is convenient for the staff to quickly locate the position of the overheating fault of the cable and perform maintenance, avoiding the slow efficiency of the staff in troubleshooting the fault point when the cable fails.

[0035] On the sides of the two side mounting plates 13 away from each other, there are extension plates 18 and fixing plates 22 respectively. The fixing plates 22 are directly below the extension plates 18. Through holes are provided on the extension plates 18. Touch rods 20 are movably installed in the through holes. A limiting ring is fixedly sleeved on the outer wall of the touch rod 20, and the limiting ring can movably fit the bottom plate of the extension plate 18 to limit the upward movement space of the touch rod 20. After the limiting ring fits the bottom plate of the extension plate 18, the top plate of the fitting plate 19 and the top end of the thermal support tube 14 are on the same horizontal plane. Fitting plates 19 for fitting the bottom ends of the support brackets 17 are provided at the top ends of the touch rods 20. The fitting plates 19 and the extension plates 18 are connected by two first connecting springs 21, which is convenient for driving the fitting plates 19 and the touch rods 20 to displace when the support bracket 17 is tilted.

[0036] An induction switch 23 is provided at the top end of the fixing plate 22. The induction switches 23 are directly below the touch rods 20 and there is only a small gap between them. Two warning lights 40 are provided at the bottom end of the support arm 4. The two warning lights 40 are connected to an induction switch 23 respectively through wires, and a power supply is installed in the warning light 40. When the induction switch 23 is turned on, the warning light 40 can be powered on and turned on through the power supply. Two rolling grooves 24 are provided at the top end of the fixing plate 22. Ball bearings 25 are provided in the two rolling grooves 24. Touch switches 26 are provided on the inner walls of one sides of the rolling grooves 24 away from the center of the lifting plate 10. The touch switches 26 are also connected to the warning lights 40 through wires. That is, the touch switches 26, the induction switches 23 and the warning lights 40 are in a parallel circuit. The touch switches 26 and the induction switches 23 are contact type dual control switches. The middle columns (common terminals) of one of the component structures of the two switches are connected through wires. That is, only when the ball bearings 25 contact the touch switches 26 and the touch rods 20 contact the induction switches 23, can the warning lights 40 be turned on to indicate that the bridge 1 is tilted, which is convenient for the staff to quickly carry out maintenance.

[0037] The top of the fixed plate 22 is provided with a through-flow groove 27, which is connected to the two rolling grooves 24, and two guide tubes 28 are provided on the fixed plate 22. A liquid guide plate 29 is provided directly above the fixed plate 22. The liquid guide plate 29 is connected to the fixed plate 22 through two guide tubes 28. The liquid guide plate 29 has a hollow cavity built in it, and the two ends of the guide tube 28 extend into the hollow inner cavity of the liquid guide plate 29 and the through-flow groove 27, respectively. A material placement plate 30 is provided at the top of the material placement plate 30, and a groove is provided at the top of the material placement plate 30. A liquid guide tube is provided in the groove, and the two ends of the liquid guide tube extend into the groove on the material placement plate 30 and the guide tube. In the hollow cavity in the liquid plate 29, a copper plate is fixedly installed on the top of the groove on the placing plate 30. By filling the placing plate 30 with oil with low viscosity, when the cables in the bridge 1 are powered on, heat will be generated on their surfaces. The heat will be transferred to the oil through the copper plate with high heat absorption efficiency. The oil will flow after being heated, so that the oil in the rolling groove 24 will flow to the placing plate 30 through the flow groove 27, the guide pipe 28, and the liquid guide plate 29. The oil is in a slow flow state to avoid its excessive viscosity causing the ball 25 to stick to the inner wall of the rolling groove 24 and unable to roll when the bridge 1 is tilted.

[0038] Connecting plates 31 are fixedly installed on the front and rear sides of the liquid guide plate 29, and through holes are set on the connecting plates 31. Insertion rods 32 are set in the through holes, and insertion holes matching the diameter of the insertion rods 32 are set on the front and rear sides of the material placement plate 30. In the actual installation process, through holes need to be opened on the bridge frame 1, and the material placement plate 30 is placed inside the bridge frame 1 and connected to the liquid guide plate 29. The position of the material placement plate 30 is adjusted by connecting the connecting plates 31 and the insertion rods 32, so that the cables in the bridge frame 1 can be placed at the top of the material placement plate 30 for use, and the material placement plate 30 can be prevented from being displaced for no reason.

[0039] A protective tube 33 is movably mounted on the outer wall of the touch rod 20, and the induction switch 23 is also in the protective tube 33. A cover plate 34 is fixedly mounted on the outer wall of the protective tube 33. The cover plate 34 is fixed to the top of the fixed plate 22, so that the rolling groove 24 and the flow groove 27 are in a sealed state to prevent the oil inside from flowing out.

[0040] On one side of the two side mounting plates 13 close to each other, mounting plates 35 are fixedly installed. The front end faces of the mounting plates 35 are each provided with a sliding groove. Translation blocks 36 are slidably installed in the sliding grooves. T-shaped sliding grooves are provided on the inner walls of the back surfaces of the sliding grooves. T-shaped sliders are provided in the T-shaped sliding grooves. The T-shaped sliders are fixedly connected to the translation blocks 36. The translation blocks 36 are connected to the inner walls of the sliding grooves through second connecting springs 37. Support plates 38 are fixedly installed on the translation blocks 36. Two triangular blocks 39 are provided at the bottom end of the support frame 17. The surfaces of the two triangular blocks 39 that are in contact with the support plates 38 are inclined surfaces. During the downward movement of the support frame 17, the triangular blocks 39 will push the translation blocks 36 to move translationally during the downward movement, so that the support frame 17 can avoid directly falling downward with too large an impact force and being damaged.

[0041] When the present invention is in use, first, the connecting wall screw penetrates through the boom 3 and is connected to the wall to fix the position of the boom 3. Control the threaded rod 5 to penetrate through the support arm 4 and pass through the opening on the boom 3. Then control the first nut 6 to rotate and tighten on the outer wall of the threaded rod 5. After adjusting the support arm 4 to a horizontal state, fix its position. Rotate the adjusting screw 9 to adjust the lifting plate 10 in the horizontal state to an appropriate height for placing the bridge 1. At this time, the bridge 1 can be placed on the top of the support frame 17, and a through hole is opened on the bridge 1 to place the material placing plate 30 at the bottom end of the inner cavity of the bridge 1. And the position of the material placing plate 30 is fixed by controlling the insertion rod 32 to penetrate through the connecting plate 31 and be connected to the material placing plate 30. When the residual internal stress generated by the bridge 1 causes the bridge 1 to deform and tilt, the fitting plate 19 will be affected and move. The touch rod 20 at the bottom end of the downward moving fitting plate 19 contacts the induction switch 23. At this time, the support arm 4 is not tilted, and the ball 25 still remains in the rolling groove 24 and does not contact the touch switch 26. During the long-term use of the bridge 1, the tilted bridge 1 causes the support arm 4 to be stressed unevenly for a long time, resulting in the support arm 4 being in a tilted state. At this time, the ball 25 rolls in the rolling groove 24 and fits the inner wall of the tilted rolling groove 24 on one side to contact the touch switch 26. At this time, the touch rod 20 on the lower side of the tilted support arm 4 contacts the induction switch 23, and the ball 25 on this side contacts the touch switch 26, so that the warning light 40 on the same side at the bottom end of the support arm 4 can be lit, prompting the staff to repair the support arm 4 and the parts of the bridge 1 to be repaired in time. And during the daily use process, the cable work is likely to generate heat. At this time, the surface heat will be transferred into the oil in the cavity of the material placing table 30 through the copper plate at the top end of the material placing plate 30, prompting the heated oil to conduct convection with the low-temperature oil in the rolling groove 24, so that the ball 25 can be prevented from sticking to the inner wall of the rolling groove 24 and can work stably for a long time.

[0042] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision-assembled cable tray, comprising a cable tray for placing cables and several hoisting components with horizontal warning and positioning functions, characterized in that: The hoisting assembly includes two boom arms connected to the wall. A support arm that can be adjusted to a horizontal state is arranged between the two boom arms. An elevating plate is arranged directly above the support arm. Side mounting plates are arranged on both the left and right sides of the elevating plate. Thermosensitive support tubes with overheat detection effects are arranged at the tops of the side mounting plates. The tops of the two thermosensitive support tubes are jointly attached to a support mounting frame for supporting the bridge. Extension plates and fixing plates are arranged on the side mounting plates. A touch rod with a lifting function is arranged on the extension plate. A fitting plate that fits the support mounting frame is arranged at the top of the touch rod. Two rolling grooves are arranged on the fixing plate. Ball bearings are movably placed in the rolling grooves. A touch switch and an induction switch are respectively arranged on the inner wall of the rolling groove and the top of the fixing plate. A warning light for warning of the inclination of the bridge and the support arm is arranged at the bottom of the support arm and is connected to the touch switch and the induction switch through a circuit. The two rolling grooves are connected through a through-flow groove. A liquid guide plate for storing oil liquid is arranged on the support mounting frame. The liquid guide plate is connected to the through-flow groove through a guide pipe. Material placing plates that can absorb the heat on the surface of the cable are arranged on the liquid guide plates.

2. The precision-assembled cable tray according to claim 1, characterized in that: Two fixing frames are arranged at the top of the side mounting plate. Lifting blocks are movably installed in the fixing frames. An alarm is arranged at the bottom of the support arm. A switch connected to the alarm through a circuit is arranged in the fixing frame. Four touch blocks for contacting the lifting blocks are arranged on the support mounting frame. When the cable in the bridge is locally overheated and causes the surrounding thermosensitive support tubes to break, the touch blocks can push the lifting blocks into the fixing frames to contact the switch and make the alarm sound.

3. A precision-assembled cable tray according to claim 1, wherein: A protective cylinder is movably sleeved on the outer wall of the touch rod. A cover plate is fixedly sleeved on the outer wall of the protective cylinder. The cover plate is fixedly installed at the top of the fixing plate to cover and conceal the rolling groove and the through-flow groove.

4. A precision-assembled cable tray according to claim 1, wherein: Two threaded through-holes are arranged on the support arm. Threaded rods are arranged in the two threaded through-holes. First nuts are sleeved on the outer walls of the threaded rods. The threaded rods penetrate through the support arm and are connected to the boom arm, and the position of the support arm is fixed by the first nuts.

5. A precision-assembled cable tray according to claim 1, characterized in that: Mounting plates are fixedly installed on both of the two side mounting plates. Sliding grooves are arranged on the mounting plates. Translation blocks are slidably installed in the sliding grooves. Support plates are installed on the translation blocks. Two triangular blocks are arranged at the bottom of the support mounting frame. The surfaces of the two triangular blocks that are in contact with the support plates are inclined surfaces.

6. A precision-assembled cable tray according to claim 5, wherein: A T-shaped sliding groove is arranged on the inner wall of the sliding groove. A T-shaped sliding block is arranged in the T-shaped sliding groove. The T-shaped sliding block is fixedly connected to the translation block.

7. A precision-assembled cable tray according to claim 5, wherein: The inner wall of the sliding groove on the mounting plate and the translation block are connected by a second connecting spring.

8. A precision-assembled cable tray according to claim 1, wherein: Protrusions are fixedly installed on the front and rear side walls of the bridge. Support screws for temporarily supporting the bridge are arranged on the protrusions.

9. A precision-assembled cable tray according to claim 1, characterized in that: Two lifting rods are arranged at the bottom of the elevating plate. The lifting rods penetrate through the support arm and extend below the support arm.

10. A precision-assembled cable tray according to claim 1, characterized in that: Two grooves are arranged at the top of the elevating plate. Orientation plates for vertically lifting and lowering along with the support mounting frame are arranged in the two grooves. Springs are connected between the bottom ends of the orientation plates and the inner walls of the grooves.

11. A precision-assembled cable tray according to claim 1, characterized in that: The bottom end of the lifting plate is rotatably installed with an adjusting screw rod, and the adjusting screw rod penetrates through the support arm and extends below the support arm.

12. A precision-assembled cable tray according to claim 1, characterized in that: Four threaded grooves are provided at the bottom end of the supporting frame, and screw rods capable of contacting the lifting blocks are arranged in the threaded grooves.

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