Universal joint of cable tray

Abstract

The present application relates to the field of cable installation in power supply systems, and in particular to a universal joint of a cable bridge, including: a connecting bridge for connecting to a branch cable bridge; a connecting tube, one end of which is used for detachable connection with the side wall of the main cable bridge, and the other end is connected to the side wall of the connecting bridge and communicated with the inside of the connecting bridge, and the side wall of the main cable bridge is provided with a through hole for cables to reach the connecting tube from the main cable bridge; a connecting assembly, which is arranged at one end of the connecting tube away from the connecting bridge, and is used to connect the connecting tube to the main cable bridge. The present application has the effect of being able to install a branch cable bridge without changing the existing main cable bridge, and the installed cable bridge will not cause cable waste when arranging cables.

Description

Technical Field

[0001] The present application relates to the field of cable installation of a power supply system, and in particular to a universal joint of a cable tray. Background Art

[0002] The power supply system is an important part of the factory buildings of industrial and mining enterprises, railway stations of public buildings, hotels, and residential buildings. The power supply system consists of one or several main cable bridges (also known as cable troughs) and several branch cable bridges that are divided into four radial shapes on the main cable bridge. The main cable bridge and the branch cable bridge are connected by T-shaped three-way joints of standard parts sold on the market. In the project, the cable bridge should be constructed according to the drawings before the indoor decoration or the installation of auxiliary facilities. During construction, a T-shaped three-way joint is installed at each dispatching point of the main line to connect the cable bridges of the secondary branch lines such as lighting, air conditioning, power, and commercial services. Modern buildings are novel and unique, and the required functions or decoration plans are often changed during construction, resulting in the T-shaped three-way joints on the main lines that have been installed in the early stage having to be changed due to decoration and other functional needs. However, after the traditional T-shaped three-way joint is installed on the cable tray, it is quite difficult to change its installation position. The installed main cable tray of the relevant part must be dismantled, and the cable tray and T-shaped three-way joint of the relevant part of the main line must be rebuilt and installed as needed, which will cause the power supply system to be unable to be constructed according to conventional requirements and delay the construction period. Alternatively, the branch cable tray must continue to be installed at the installed T-shaped three-way joint. When laying out the cables, the cables need to be routed around and turned, resulting in cable waste. Summary of the invention

[0003] In order to enable the installation of branch line cable trays without changing the existing main line cable trays, and to prevent the installed cable trays from wasting cables when laying out the cables, the present application provides a universal joint for a cable tray.

[0004] The universal joint of a cable tray provided in the present application adopts the following technical solution:

[0005] A universal joint for a cable tray, comprising:

[0006] Connecting bridge, used to connect with branch cable bridge;

[0007] A connecting tube, one end of which is used for detachable connection with the side wall of the main cable bridge, and the other end is connected to the side wall of the connecting bridge and communicated with the inside of the connecting bridge, and the side wall of the main cable bridge is provided with a through hole for the cable to reach the connecting tube from the main cable bridge;

[0008] The connecting assembly is arranged at one end of the connecting cylinder away from the connecting bridge and is used to connect the connecting cylinder to the main cable bridge.

[0009] By adopting the above technical solution, when a certain position of the main cable tray needs to be connected to the branch cable tray but no T-shaped three-way joint is pre-installed, a through hole can be opened on the main cable tray, and the end of the connecting tube away from the connecting bridge is installed in the through hole, and the position of the connecting tube on the main cable tray is fixed by the connecting assembly. When the connecting tube is installed on the main cable tray, the connecting bridge and the main cable tray can be adjusted to any angle as needed, so that the actual installation needs and the operation are more flexible.

[0010] Optionally, the connecting cylinder is a stepped cylinder, including a first cylinder for connecting to the connecting bridge and a second cylinder inserted into a through hole and connected to the main cable bridge, the diameter of the first cylinder is greater than the diameter of the second cylinder, the connecting assembly is arranged on the second cylinder, and the connecting assembly and the first cylinder clamp the side wall of the main cable bridge.

[0011] By adopting the above technical solution, during installation, the second tube is directly inserted into the through hole, and the main line cable bridge can be clamped between the first tube and the second tube through the connecting component, thereby achieving the fixation of the connecting tube and the second tube.

[0012] Optionally, a accommodating groove is provided on the outer wall of the connecting tube, and the connecting assembly includes a limit block slidably connected in the accommodating groove and a spring fixed between the bottom of the accommodating groove and the limit block, and when the limit block extends out of the accommodating groove under the action of the spring, the limit block abuts against the inner wall of the main cable tray.

[0013] By adopting the above technical solution, under normal conditions, under the action of the spring, the limit block extends out of the accommodating groove, so that the limit block can abut against the inner wall of the main cable tray.

[0014] Optionally, clamping blocks are fixedly connected to two opposite sides of the limiting block, and a sliding groove for the clamping block to slide is provided at the bottom of the accommodating groove.

[0015] By adopting the above technical solution, the cooperation between the clamping block and the sliding groove can fix the sliding limit position of the limit block, thereby preventing the limit block from sliding out of the accommodating groove.

[0016] Optionally, a plurality of the accommodating grooves are arranged at intervals around the axis of the connecting tube, a plurality of the connecting components are provided, and the plurality of connecting components are installed in the plurality of the accommodating grooves in a one-to-one correspondence.

[0017] By adopting the above technical solution, the position of the main cable bridge on the connecting tube can be fixed by multiple connecting components at the same time, and the fixation is more firm.

[0018] Optionally, a first mounting ring is fixedly connected to one end of the connecting tube facing the connecting bridge, a second mounting ring is fixedly connected to the outer wall of the first tube close to the second tube, a first threaded hole is opened on the first mounting ring, a plurality of second threaded holes are opened on the second mounting ring, two of the second bolt holes form a group, when a fixing bolt threadedly connected to the first threaded hole is connected to one of the second threaded holes in the same group, the accommodating groove corresponds to the position of the limit baffle; when a fixing bolt threadedly connected to the first threaded hole is connected to another second threaded hole in the same group, the accommodating groove corresponds to the position of the notch; the fixing bolt is threadedly connected to the main line bridge.

[0019] By adopting the above technical solution, under normal circumstances, the limit baffle corresponds to the position of the accommodating groove, thereby fixing the position of the limit block in the accommodating groove, and the staff can directly operate the auxiliary cylinder to pass through the through hole; then rotate the auxiliary cylinder or rotate the connecting cylinder to make the accommodating groove correspond to the position of the notch, at this time the limit block extends out of the accommodating groove under the action of the spring, and the extended limit block will abut against the inner wall of the main cable tray, thereby clamping the main cable tray between the limit block and the first cylinder.

[0020] Optionally, a guide surface is processed on one side of the limit baffle plate facing the inclined surface of the limit block, and when the limit baffle plate abuts against the limit block, the guide surface contacts the inclined surface of the limit block.

[0021] By adopting the above technical solution, when it is necessary to release the connection between the connecting cylinder and the main cable tray, the auxiliary cylinder and the second cylinder are directly operated to rotate relative to each other. At this time, the guide surface will abut against the limiting baffle plate so that the limiting baffle plate pushes the limiting block into the accommodating groove through the guide plate. The staff can directly take the auxiliary cylinder out of the through hole to realize the disassembly of the connecting cylinder and the main cable tray.

[0022] Optionally, a first mounting ring is fixedly connected to one end of the auxiliary tube facing the connecting bridge, a second mounting ring is fixedly connected to the outer wall of the first tube close to the second tube, at least one first threaded hole is opened on the first mounting ring, and at least two second threaded holes are opened on the second mounting ring, two second threaded holes form a group, and a group of second threaded holes is arranged corresponding to one first threaded hole, when a fixing bolt threadedly connected to the second threaded hole is connected to one of the first threaded holes in the same group, the accommodating groove corresponds to the position of the limit baffle; when the fixing bolt threadedly connected to the second threaded hole is connected to another first threaded hole in the same group, the accommodating groove corresponds to the position of the notch; the fixing bolt is threadedly connected to the main cable bridge.

[0023] By adopting the above technical solution, when the auxiliary operation cylinder and the connecting cylinder rotate relative to each other so that the accommodating groove is located at the notch, the limit block extends out under the action of the spring to fix the relative position of the main cable tray and the connecting cylinder. The fixing bolt can be screwed into the second threaded hole and the corresponding first threaded hole to fix the relative position of the main cable tray and the connecting cylinder, thereby avoiding relative rotation of the main cable tray and the connecting cylinder under the action of external force.

[0024] Optionally, the first tube includes a fixed tube detachably connected to the second tube and a limiting tube threadedly connected to an end of the fixed tube away from the second tube, and an end of the limiting tube facing the fixed tube is fixedly connected to a connecting column threadedly connected to the fixed tube.

[0025] By adopting the above technical solution, during installation, the limiting cylinder is directly placed inside the connecting bridge, and the connecting column is passed through the connecting bridge and screwed into the fixing cylinder, so that the connecting bridge is clamped by the fixing cylinder and the limiting cylinder, thereby realizing the connection between the connecting bridge and the connecting cylinder.

[0026] Optionally, a guide wheel for guiding the cable is rotatably connected inside the connecting bridge, the axis of the guide wheel is consistent with the width direction of the connecting bridge, at least two guide wheels are arranged at intervals along the length direction of the connecting bridge, and a threading hole for the cable to pass through is formed between two adjacent guide wheels.

[0027] By adopting the above technical solution, when the cable is subsequently installed, the cable can pass through the threading hole and then extend along the length direction of the connecting bridge, avoiding damage to the cable at the bend.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The present application sets a connecting bridge, and through the detachable connection between the connecting tube and the main cable bridge, the connecting tube can be fixed on the main cable bridge through the connecting assembly, so that when it is necessary to install a branch cable bridge at a certain position of the main cable bridge, there is no need to move the position of the T-shaped cable bridge, and a through hole is directly opened on the main cable bridge to achieve the connection of the connecting bridge, which meets the installation needs in various situations, and the branch cable bridge can be installed without changing the existing main cable bridge. When arranging the cables later, the cables are directly inserted into the connecting bridge through the connecting tube, and extended to the appropriate position through the connecting bridge, without the need to make a long detour for the cables, so that the excessive waste of cables is also reduced;

[0030] 2. The setting of the auxiliary cylinder and the connecting assembly enables the connecting cylinder to be smoothly inserted into the main cable bridge from the through hole under normal conditions. By operating the auxiliary cylinder to rotate relative to the connecting cylinder, the limit block can be extended under the action of the spring, thereby fixing the position of the connecting cylinder and the main cable bridge. When the connecting bridge needs to be removed, the auxiliary cylinder can be directly rotated relative to the connecting cylinder. The operation, installation and disassembly are very convenient and quick;

[0031] 3. The first mounting ring and the second mounting ring are provided so that the relative positions of the auxiliary tube and the connecting tube can be fixed by fixing bolts, so as to prevent the relative rotation of the two under the action of external force, thereby making the connection between the connecting tube and the main line bridge unstable;

[0032] 4. The present application connects the connecting tube to the middle of the connecting bridge so that both ends of the connecting bridge form installation ends for installing the branch cable bridge. The staff can choose to install the branch cable bridge at one end of the connecting bridge or at both opposite ends of the connecting bridge according to needs; the scope of use is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of this application.

[0034] Figure 2 This is a structural diagram made to illustrate an example of connecting components.

[0035] Figure 3 This is a structural diagram made to illustrate another example of connecting components.

[0036] Figure 4 This is to reflect the structural schematic diagram of the connection tube just being installed in the through hole.

[0037] Figure 5 It is a schematic diagram to reflect the structure after the connecting tube is completely installed in the through hole and fixed by the connecting assembly.

[0038] Figure 6 This is a structural diagram designed to reflect the guide surface structure.

[0039] Explanation of the reference numerals: 1. main cable bridge; 11. through hole; 2. connecting bridge; 21. guide wheel; 22. threading hole; 3. connecting cylinder; 31. first cylinder; 311. fixing cylinder; 312. limiting cylinder; 313. connecting column; 314. second mounting ring; 315. second threaded hole; 32. second cylinder; 321. accommodating groove; 322. slide groove; 33. auxiliary cylinder; 331. notch; 332. limiting baffle; 333. guide surface; 334. first mounting ring; 335. first threaded hole; 336. fixing bolt; 4. connecting assembly; 41. nut; 42. limiting block; 421. clamping block; 43. spring. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-6 This application is described in further detail.

[0041] The present application embodiment discloses a universal joint of a cable tray. Figure 1 and Figure 2 The universal joint of the cable bridge includes a connecting bridge 2 and a connecting tube 3 connected to the connecting bridge 2 at one end, the interior of the connecting tube 3 is connected to the connecting bridge 2, and the end of the connecting tube 3 away from the connecting bridge 2 is used to connect to the main cable bridge 1, and a through hole 11 is provided on one side wall of the main cable bridge 1 for the cable to reach the connecting tube 3 from the main cable bridge 1. In the present application, the through hole 11 is provided on the upper side of the main cable bridge 1, and a connecting assembly 4 is provided on the connecting tube 3 to fix the position of the connecting tube 3 on the main cable bridge 1, and the connecting tube 3 can be fixed on the main cable bridge 1 through the connecting assembly 4. When in use, by passing the cable in the main cable bridge 1 through the through hole 11 and the connecting tube 3 to the connecting bridge 2, and extending along the length direction of the connecting bridge 2, the cable can be switched at a suitable position, and the branch cable bridge can be directly connected at the end of the connecting bridge 2. When in use, the connecting tube 3 can also be operated to rotate relative to the main cable tray 1 as needed to change the angle of the connecting bridge 2 relative to the main cable tray 1, so that branch cable trays of any angle can be connected to the connecting bridge 2 to meet the installation needs at different angles.

[0042] The connecting tube 3 includes a first tube 31 connected to the connecting bridge 2 and a second tube 32 integrally fixed to the end of the first tube 31 away from the connecting bridge 2, the second tube 32 is used to connect to the main cable bridge 1, and the diameter of the first tube 31 is larger than the diameter of the second tube 32. The connecting assembly 4 is installed on the side wall of the second tube 32 and is located at the end away from the first tube 31, so that the side wall of the main cable bridge 1 can be clamped by the connecting assembly 4 and the first tube 31, thereby fixing the position of the connecting tube 3 on the main cable bridge 1.

[0043] Reference Figure 2 In one example of the present application, the connection assembly 4 may be a nut 41 threadedly connected to the second cylinder 32. When the second cylinder 32 is inserted into the through hole 11, the nut 41 is screwed on the end of the second cylinder 32 away from the first cylinder 31 from the inside of the main cable tray 1, so that the position of the connection cylinder 3 on the main cable tray 1 can be fixed by the nut 41. However, since the main cable tray 1 has been installed in the early stage, it is very inconvenient to install the nut 41 in the main cable tray 1.

[0044] Reference Figure 3 Therefore, in another example of the present application, a receiving groove 321 is provided on the outer wall of the second cylinder 32, and the connecting component 4 is installed in the receiving groove 321. A plurality of receiving grooves 321 are provided at intervals around the axis of the second cylinder 32, and a plurality of connecting components 4 are also provided. The plurality of connecting components 4 are correspondingly installed in the plurality of receiving grooves 321, so as to achieve fixed clamping of the plurality of positions of the main cable tray 1. The present application is described by taking the example that the number of connecting components 4 and receiving grooves 321 is 8.

[0045] The connecting assembly 4 includes a limit block 42 slidably connected to the receiving groove 321 and a spring 43 fixed between the bottom of the receiving groove 321 and the limit block 42. Under normal conditions, the limit block 42 extends out of the receiving groove 321 under the elastic force of the spring 43. An auxiliary cylinder 33 for controlling the limit block 42 to retract into the receiving groove 321 is rotatably connected to the second cylinder 32.

[0046] Reference Figure 3 and Figure 4 Specifically, a plurality of notches 331 are formed at one end of the auxiliary tube 33 away from the first tube 31. The plurality of notches 331 are arranged at intervals around the axis of the auxiliary tube 33, and the number of the notches 331 is consistent with the number of the receiving grooves 321. A limiting baffle 332 is formed between two adjacent notches 331 to limit the limiting block 42 from sliding out of the receiving groove 321. Before use, the receiving groove 321 corresponds to the position of the limiting baffle 332, and the limiting block 42 is located in the receiving groove 321 under the action of the limiting baffle 332. After the auxiliary cylinder 33 and the second cylinder 32 are inserted into the through hole 11 on the main cable tray 1, the auxiliary cylinder 33 is operated to rotate relative to the second cylinder 32 so that the accommodating groove 321 corresponds to the position of the notch 331. At this time, the limit block 42 extends out of the accommodating groove 321 under the action of the spring 43, and the side of the limit block 42 facing the first cylinder 31 will abut against the inner wall of the main cable tray 1, thereby fixing the position of the connecting cylinder 3 and the main cable tray 1, and then realizing the connection between the connecting bridge 2 and the main cable tray 1. The staff can directly install the branch cable tray at the end of the connecting bridge 2.

[0047] Reference Figure 5 and Figure 6The limit block 42 is a wedge-shaped block. The end of the limit block 42 away from the spring 43 is processed with an inclined surface, which is located on one side of the limit block 42. At the same time, a guide surface 333 is processed on the side of the limit baffle 332 facing the inclined surface of the limit block 42, and the guide surface 333 is located on the inner side of the limit baffle 332. When it is necessary to remove the connecting cylinder 3 from the main cable tray 1, the auxiliary cylinder 33 is directly operated to rotate relative to the second cylinder 32. At this time, the inclined surface of the limit block 42 will abut against the guide surface 333 until the limit block 42 is retracted into the accommodating groove 321 under the action of the guide surface 333. The staff can directly take out the second cylinder 32 from the through hole 11, which is very convenient for installation and removal.

[0048] Of course, inclined surfaces can also be machined on both opposite sides of the limit block 42, and guide surfaces 333 can be machined on both opposite sides of the limit baffle 332, so that when the limit block 42 needs to be retracted into the receiving groove 321, the auxiliary cylinder 33 can be rotated in any direction to push the limit block 42 into the receiving groove 321. This application is described by taking the example that one side of the limit block 42 is machined with an inclined surface and one side of the limit baffle 332 is machined with a guide surface 333.

[0049] Reference Figure 3 At the same time, in order to prevent the limit block 42 from completely falling out of the accommodating groove 321 under the action of the spring 43, a clamping block 421 is fixedly connected to the opposite sides of the limit block 42, and a sliding groove 322 for the clamping block 421 to slide is provided on the opposite side walls of the accommodating groove 321. When the limit block 42 slides in the accommodating groove 321, the clamping block 421 slides in the sliding groove 322. Through the cooperation between the clamping block 421 and the sliding groove 322, the sliding limit position of the limit block 42 can be limited to prevent the limit block 42 from sliding out of the accommodating groove 321.

[0050] Reference Figure 5 In order to prevent the auxiliary cylinder 33 from rotating relative to the second cylinder 32 under the action of external force when the connecting cylinder 3 is installed on the main cable bridge 1, a first mounting ring 334 is fixedly connected to the end of the auxiliary cylinder 33 facing the first cylinder 31. When the connecting cylinder 3 is installed on the main cable bridge 1, the first mounting ring 334 is clamped between the first mounting ring 334 and the main cable bridge 1 due to the gravity of the connecting bridge 2, thereby fixing the position of the first mounting ring 334.

[0051] At the same time, a second mounting ring 314 is fixedly connected to the outer wall of the first tube 31. The second mounting ring 314 is located at one end of the first tube 31 close to the second tube 32. At least two first threaded holes 335 are opened on the first mounting ring 334, and at least one second threaded hole 315 is opened on the second mounting ring 314. Two second threaded holes 315 form a group, and a group of second threaded holes 315 corresponds to one first threaded hole 335. This application is described by taking the example that two first threaded holes 335 are opened and one second threaded hole 315 is opened. When in use, the fixing bolt 336 can be screwed into the second threaded hole 315 and screwed into one of the first threaded holes 335, so that the position of the receiving groove 321 corresponds to the position of the notch 331. At this time, the relative position of the second tube 32 and the auxiliary tube 33 can be fixed, and the limit block 42 is also extended and abutted against the main cable bridge 1 under the action of the spring 43; when the fixing bolt 336 is screwed into the second threaded hole 315 and screwed into another first threaded hole 335, the position of the receiving groove 321 corresponds to the position of the limit baffle 332. At this time, under the action of the limit baffle 332, the limit block 42 is embedded in the receiving groove 321. By screwing the fixing bolt 336 into different first threaded holes 335, the two position states of the limit block 42 can be fixed. When installing the connecting tube 3 on the main cable tray 1, it is only necessary to insert the connecting tube 3 into the through hole 11, screw the auxiliary tube 33, and screw the fixing bolt 336 into the second threaded hole 315 and the first threaded hole 335 at the corresponding position; when it needs to be removed, it is only necessary to screw down the fixing bolt 336 and operate the auxiliary tube 33 to rotate so that the limit block 42 is embedded in the accommodating groove 321. Installation and disassembly are very convenient.

[0052] Reference Figure 2 The first tube 31 includes a fixed tube 311 integrally fixed with the second tube 32 and a limiting tube 312 detachably connected to one end of the fixed tube 311 away from the second tube 32. A connecting column 313 threadedly connected to the fixed tube 311 is fixed to one end of the limiting tube 312 facing the fixed tube 311. The connecting column 313 is a hollow cylinder, and an external thread is processed on the connecting column 313, and an internal thread is processed on the inner wall of the limiting tube 312. By operating the limiting tube 312 inside the connecting bridge 2, the connecting column 313 passes through the connecting bridge 2 and is screwed into the limiting tube 312, so that the side wall of the connecting bridge 2 can be clamped between the limiting tube 312 and the fixing tube 311, so that the connecting bridge 2 is installed and fixed.

[0053] Reference Figure 2In order to avoid excessive wear on the cables at the cable turning point when the cables in the main cable tray 1 reach the connecting tray 2 from the connecting tube 3, the end of the second tube 32 away from the first tube 31 is rounded, and the rounded corner is located on the inner wall of the second tube 32, so that when the cables in the main cable tray 1 reach the connecting tube 3, they change direction after contacting the smooth part of the second tube 32, thereby reducing the wear on the cables.

[0054] At the same time, a guide wheel 21 is rotatably connected inside the connecting bridge, the axis of the guide wheel 21 is consistent with the width direction of the connecting bridge 2, and two guide wheels 21 are arranged at intervals along the length direction of the connecting bridge 2, and a threading hole 22 for the cable to pass through is formed between the two guide wheels 21. When the cable reaches the connecting bridge 2 from the connecting cylinder 3, it can pass through the threading hole 22 and then extend along the length direction of the connecting bridge 2. After the cable passes through the threading hole 22, the free end of the cable can extend to one end of the connecting bridge 2, or to the other end of the connecting bridge 2, and of course, it can also be divided into two ways and extend to both ends of the connecting bridge 2 at the same time. Through the universal joint, the universal joint can be directly installed at a suitable position to connect the branch cable bridge, and the installation is very convenient and simple. During the installation process, the staff can also operate the connecting cylinder 3 to rotate relative to the main cable bridge 1 according to the needs, or operate the connecting bridge 2 to rotate relative to the first cylinder 31, so as to adjust the relative angle between the connecting bridge 2 and the main cable bridge 1 to meet the installation needs of different angles, and the adjustment is very convenient.

[0055] The implementation principle of the universal joint of a cable tray in the embodiment of the present application is as follows: when it is necessary to install a branch cable tray at a position where a T-shaped three-way joint is not pre-installed, a through hole 11 can be directly opened on the main cable tray 1 to be installed, and then the connecting cylinder 3 is inserted into the through hole 11, and the auxiliary cylinder 33 is operated to rotate relative to the second cylinder 32, so that the accommodating groove 321 corresponds to the position of the notch 331 of the auxiliary cylinder 33, and the position of the first mounting ring 334 and the second mounting ring 314 is fixed by the fixing bolt 336. Then the limiting cylinder 312 is operated to make the connecting column 313 extend from the connecting bridge 2 and screw on the fixing cylinder 311, and the angle of the connecting bridge 2 relative to the main cable tray 1 is adjusted as needed to complete the installation of the connecting bridge 2 and the main cable tray 1. Then the cable in the main cable tray 1 is passed from the connecting cylinder 3 to the connecting bridge 2, and then extended along the length direction of the connecting bridge 2 after passing through the threading hole 22. Subsequent staff can directly install the branch trunk cable bridge at one end or both ends of the connecting bridge 2.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A universal joint for a cable tray, characterized in that: include: A connecting bridge (2) is used to connect with the branch line cable bridge; A connecting tube (3), one end of which is used for detachable connection with the side wall of the main cable bridge (1), and the other end of which is connected to the side wall of the connecting bridge (2) and communicated with the interior of the connecting bridge (2); a through hole (11) is provided on the side wall of the main cable bridge (1) for the cable to reach the connecting tube (3) from the main cable bridge (1); A connecting assembly (4), arranged at one end of the connecting cylinder (3) away from the connecting bridge (2), and used for connecting the connecting cylinder (3) to the main cable bridge (1); The connecting tube (3) is a stepped tube, comprising a first tube (31) for connecting to the connecting bridge (2) and a second tube (32) inserted into the through hole (11) and connected to the main cable bridge (1), the diameter of the first tube (31) being greater than the diameter of the second tube (32), the connecting assembly (4) being arranged on the second tube (32), and the connecting assembly (4) and the first tube (31) clamping the side wall of the main cable bridge (1); The outer wall of the connecting tube (3) is provided with a receiving groove (321), and the connecting assembly (4) comprises a limit block (42) slidably connected in the receiving groove (321) and a spring (43) fixed between the bottom of the receiving groove (321) and the limit block (42), and when the limit block (42) extends out of the receiving groove (321) under the action of the spring (43), the limit block (42) abuts against the inner wall of the main cable bridge (1); A plurality of the containing grooves (321) are arranged at intervals around the axis of the connecting tube (3), a plurality of the connecting components (4) are provided, and the plurality of connecting components (4) are installed in the plurality of the containing grooves (321) in a one-to-one correspondence; An auxiliary cylinder (33) for controlling the limit block (42) to slide into the receiving groove (321) is rotatably connected to the outer wall of the second cylinder (32); one side of the limit block (42) is processed into an inclined surface so as to be retracted into the receiving groove (321) under the action of the auxiliary cylinder (33); a notch (331) is provided at one end of the auxiliary cylinder (33) away from the connecting bridge (2); a plurality of notches (331) are arranged at intervals around the axis of the auxiliary cylinder (33); and a plurality of the notches (331) and a plurality of the connecting components (4 ) are arranged in one-to-one correspondence, and a limiting baffle (332) for limiting the limiting block (42) from sliding out of the accommodating groove (321) is formed between two adjacent notches (331); when the accommodating groove (321) is located at the limiting baffle (332), the limiting block (42) is embedded in the accommodating groove (321) under the action of the limiting baffle (332); when the accommodating groove (321) is located at the notch (331), the limiting block (42) extends out of the accommodating groove (321) under the action of the spring (43); A guide surface (333) is machined on one side of the limit baffle (332) facing the inclined surface of the limit block (42); when the limit baffle (332) abuts against the limit block (42), the guide surface (333) contacts the inclined surface of the limit block (42).

2. The universal joint of the cable tray according to claim 1, characterized in that: The limiting block (42) is fixedly connected with clamping blocks (421) on two opposite sides, and the bottom of the accommodating groove (321) is provided with a sliding groove (322) for the clamping block (421) to slide.

3. The universal joint of the cable tray according to claim 1, characterized in that: A first mounting ring (334) is fixedly connected to one end of the auxiliary tube (33) facing the connecting bridge (2); a second mounting ring (314) is fixedly connected to the outer wall of the first tube (31) close to the second tube (32); at least one first threaded hole (335) is formed on the first mounting ring (334); at least two second threaded holes (315) are formed on the second mounting ring (314); two second threaded holes (315) form a group; a group of the second threaded holes (315) and one of the first threaded holes (335) are connected to each other. 5) correspondingly arranged, when the fixing bolt (336) threadedly connected to the second threaded hole (315) is connected to one of the first threaded holes (335) in the same group, the position of the accommodating groove (321) corresponds to the position of the limiting baffle (332); when the fixing bolt (336) threadedly connected to the second threaded hole (315) is connected to another first threaded hole (335) in the same group, the position of the accommodating groove (321) corresponds to the position of the notch (331); the fixing bolt (336) is threadedly connected to the main line cable tray (1).

4. The universal joint of the cable tray according to claim 1, characterized in that: The first tube (31) comprises a fixed tube (311) fixedly connected to the second tube (32) and a limiting tube (312) detachably connected to one end of the fixed tube (311) away from the second tube (32); one end of the limiting tube (312) facing the fixed tube (311) is fixedly connected to a connecting column (313) threadedly connected to the fixed tube (311).

5. The universal joint of the cable tray according to claim 1, characterized in that: A guide wheel (21) for guiding the cable is rotatably connected inside the connecting bridge (2), the axis of the guide wheel (21) is consistent with the width direction of the connecting bridge (2), at least two guide wheels (21) are arranged at intervals along the length direction of the connecting bridge (2), and a threading hole (22) for the cable to pass through is formed between two adjacent guide wheels (21).

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