An assembled cable tray with expansion allowance and its assembly method

Abstract

This invention relates to the field of cable tray assembly technology, specifically to an assembled cable tray with expansion play and its assembly method. The assembled cable tray with expansion play includes a connecting plate for connecting the cable tray body; the connecting plate has two sets of movable plates, and connecting components are provided on both sides of the movable plates. Each connecting component includes a connector on the movable plate. When the two sets of cable tray bodies are connected, the connector engages with mounting holes on the cable tray body to fix the movable plate to the cable tray body. The connector is connected to an unlocking component on the connecting plate, which can drive the connector to separate from the cable tray body. The connecting plate also has a linkage component, which includes a locking structure and a telescopic structure. The telescopic structure connects the two sets of movable plates. The locking structure releases or locks the telescopic structure. When the telescopic structure is released, it pulls one set of cable tray bodies, and the telescopic structure drives the two sets of movable plates to move simultaneously towards or away from each other.

Description

Technical Field

[0001] This invention relates to the field of cable tray assembly technology, specifically to an assembled cable tray with expansion allowance and its assembly method. Background Technology

[0002] Cable trays are structured devices used to support and protect cables, typically made of metallic or non-metallic materials. They act like an "aerial corridor," allowing cables to be arranged orderly and safely traversing factories, tunnels, and other similar environments. Due to the thermal expansion and contraction properties of solid materials like metals, cable trays experience expansion and contraction stresses due to temperature changes during use. If rigid connections are used to lock the cable tray during installation, these minute changes cannot be released, transforming into significant destructive stresses that can cause the cable tray to arch, twist, or even shear or tear.

[0003] At present, the "centralized elimination method" is adopted, which involves setting expansion joints at specific locations to resolve stress. When installing expansion joints, the connecting bolts should not be tightened, and a sliding allowance should be left in the long bolt holes so that the cable tray can freely expand and contract when the temperature changes.

[0004] However, the installation accuracy must be strictly controlled during installation. If the connecting bolts are tightened too much, the sliding will be forcibly restricted, and the expansion joint will degenerate into an ordinary connecting plate, thus completely losing its "buffering and shock absorption" function. If the installation is too loose, the connecting bolts will not have enough preload, and under the long-term influence of the cable weight and its own weight, the connection of the cable tray will be misaligned downwards. Summary of the Invention

[0005] The purpose of this invention is to provide an assembled cable tray with expansion allowance and its assembly method, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An assembled cable tray with expansion allowance includes:

[0008] A connecting plate, which is used to connect two sets of cable tray bodies;

[0009] Two sets of movable plates are symmetrically slidably arranged on the connecting plate. Each set of movable plates has a connecting component on its left and right sides. The connecting component includes a connector that is elastically slidably disposed on the movable plate and slidably connected to the connecting plate. When the two sets of cable tray bodies are connected, the connector cooperates with the mounting holes opened on the cable tray body to fix the movable plate to the cable tray body.

[0010] The connector is connected to an unlocking component disposed on the connector plate, and the unlocking component is capable of driving the connector to separate from the cable tray body;

[0011] The connecting plate is also provided with a linkage component, which includes a locking structure and a telescopic structure. The telescopic structure connects two sets of the moving plates. The locking structure is used to release or lock the telescopic structure. When the telescopic structure is released, it pulls one of the cable tray bodies. The telescopic structure can drive the two sets of moving plates to move towards or away from each other at the same time.

[0012] As described above, the assembled cable tray with expansion play includes a connector that is slidably disposed on the movable plate and the connecting plate, the connector having two sets of connector blocks and guide bevels.

[0013] As described above, the assembled cable tray with expansion play includes a sliding rod slidably disposed on the connecting plate, a positioning spring sleeved on the sliding rod, one end of the positioning spring abutting against the plug rod, and the other end abutting against the connecting plate.

[0014] As described above, the assembled cable tray with expansion play includes an unlocking component comprising a driving structure and a triggering structure. Two sets of triggering structures are symmetrically arranged along the width direction of the connecting plate. Each set of triggering structures includes an unlocking rod slidably disposed on the connecting plate. One end of the unlocking rod is provided with a sliding cylinder, and the other end is provided with a wedge block. The sliding cylinder is slidably connected to the plug rod.

[0015] As described above, the assembled cable tray with expansion play includes a drive structure comprising a rotating plate rotatably mounted on the connecting plate, the rotating plate being positioned between two sets of wedges, the rotating plate rotating to engage with the wedges, forcing the two sets of unlocking levers away from each other.

[0016] As described above, the assembled cable tray with expansion play includes a telescopic structure comprising a main gear and a driven gear rotatably mounted on the connecting plate, the main gear and the driven gear meshing with each other, and both the main gear and the driven gear are provided with deflection cylinders, each of the two sets of deflection cylinders having a hinge rod inserted therein, and the two sets of hinge rods being hinged to the two sets of moving plates respectively.

[0017] As described above, the assembled cable tray with expansion play: the locking structure is set on the mounting part fixed to the connecting plate, including a transmission part, a positioning part and a locking part, the transmission part including a fixing ring coaxially arranged with the main gear, and the fixing ring having a toothed structure equidistantly opened along its circumference.

[0018] As described above, the assembled cable tray with expansion play includes a movable ring with a toothed structure evenly spaced along its circumference. The movable ring is slidably connected to a mounting rod mounted on the mounting component. A retaining spring is sleeved on the mounting rod, with one end of the retaining spring abutting against the mounting component and the other end abutting against the movable ring.

[0019] As described above, the assembled cable tray with expansion play includes a locking member comprising a sleeve ring, which is sleeved on the movable ring and placed in a movable groove opened on the movable ring, and a threaded sleeve is installed on the sleeve ring, the threaded sleeve being threadedly connected to a threaded rod rotatably mounted on the mounting member.

[0020] A method for assembling an assembled cable tray with expansion play is also proposed, using an assembled cable tray with expansion play as described above, including the following steps:

[0021] Step 1: In the initial state, the telescopic structure is locked. When connecting the cable tray body, the cable tray body abuts against the positioning block, and then the connecting plate is pressed down. During the pressing process, the plug-in block is squeezed inward by the cable tray body until the plug-in block is aligned with the mounting hole. Then the plug-in block quickly resets and inserts into the mounting hole to realize the connection between the moving plate and the cable tray body.

[0022] Step 2: After connection, rotate the threaded rod to release the telescopic structure. Then, as needed, pull one of the cable tray bodies. The telescopic structure will move, causing the two sets of moving plates to simultaneously spread inward or outward.

[0023] Step 3: Once the required length is reached, rotate the threaded rod to lock the telescopic structure and fix the position of the moving plate to ensure a stable connection between the two cable tray bodies.

[0024] Step 4: When disassembly is required, rotate the rotating plate. The rotating plate cooperates with the triggering structure to drive the plug block out of the mounting hole, thereby separating the cable tray body from the moving plate.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The positioning blocks enable rapid initial positioning of the cable tray body, ensuring automatic alignment of the mounting holes and connectors. By setting up a press-fit connection component, the cooperation between the plug-in block and the positioning spring allows for a stable connection between the cable tray body and the moving plate without the need for auxiliary tools, making assembly quick and convenient.

[0027] By setting up linkage components and utilizing the cooperation between telescopic structures, the two sets of cable tray bodies can move simultaneously towards or away from each other, so that the assembled cable tray can be length-adjusted according to actual needs.

[0028] Simultaneously, the locking structure and the telescopic structure work together to lock the telescopic structure, fixing the position of the moving plate in contact with the positioning block for quick installation by the operator. During installation, the locking structure ensures stable connection dimensions. After all cable tray bodies are installed, the locking structure releases the telescopic structure, putting the entire cable tray in a "floating" state. This allows the cable tray body to automatically adjust its length according to the stress caused by thermal expansion and contraction, effectively absorbing the expansion and preventing cable tray deformation or connection breakage. Furthermore, during use, the toothed structure between the fixed ring and the moving ring, combined with the always-compressed abutment spring, prevents the cable tray body from loosening due to vibration.

[0029] By setting up an unlocking component, and utilizing the cooperation between the unlocking component and the connector, the cable tray body and the connecting plate can be quickly disassembled, thus facilitating the operator to disassemble and replace the cable tray. Attached Figure Description

[0030] Figure 1 This is a structural diagram of an assembled cable tray with expansion allowance.

[0031] Figure 2 A schematic diagram of the structure for adjusting the length of an assembled cable tray with expansion allowance.

[0032] Figure 3 This is a schematic diagram of the plug-in block in an assembled cable tray with expansion allowance.

[0033] Figure 4 This is a structural diagram of the unlocking component in an assembled cable tray with expansion allowance.

[0034] Figure 5 This is a schematic diagram of the internal positioning block of the connecting plate in an assembled cable tray with expansion allowance.

[0035] Figure 6 This is a schematic diagram of the expansion joint structure in an assembled cable tray with expansion capacity.

[0036] Figure 7 This is a schematic diagram of the locking structure in an assembled cable tray with expansion capacity.

[0037] Figure 8 This is a schematic diagram of the locking and positioning components in an assembled cable tray with expansion allowance.

[0038] Figure 9 This is a schematic diagram of the drive structure in an assembled cable tray with expansion capacity.

[0039] Figure 10 This is a schematic diagram of the triggering structure in an assembled cable tray with expansion capacity.

[0040] Figure 11 This is a schematic diagram of the connection components and connecting plates in an assembled cable tray with expansion allowance.

[0041] Figure 12 This is a structural diagram of the connecting components in an assembled cable tray with expansion allowance.

[0042] In the diagram: 1. Connecting plate; 101. Baffle; 102. Mounting component; 103. Positioning block; 2. Cable tray body; 201. Mounting hole; 3. Deflection cylinder; 4. Hinge rod; 5. Rotating plate; 6. Unlocking rod; 7. Moving plate; 8. Insertion block; 801. Guide slope; 9. Wedge block; 901. Trigger surface; 10. Sliding cylinder; 11. Insertion rod; 1201. Main gear; 1202. Driven gear; 13. Threaded rod; 14. Fixed ring; 15. Moving ring; 1501. Moving groove; 16. Abutment spring; 17. Threaded sleeve; 18. Sleeve ring; 19. Mounting rod; 20. Slide rod; 21. Positioning spring. Detailed Implementation

[0043] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0044] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0045] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0046] Please see Figures 1-12 In this embodiment of the invention, an assembled cable tray with expansion allowance includes:

[0047] Connecting plate 1, which is used to connect two sets of cable tray bodies 2;

[0048] Two sets of movable plates 7 are symmetrically slidably arranged on the connecting plate 1. Each set of movable plates 7 has a connecting component on its left and right sides. The connecting component includes a connector that is elastically slidably arranged on the movable plate 7 and slidably connected to the connecting plate 1. When the two sets of cable tray bodies 2 are connected, the connector cooperates with the mounting hole 201 opened on the cable tray body 2 to fix the movable plate 7 to the cable tray body 2.

[0049] Specifically, please refer to Figure 5 The cable tray body 2 is provided with a positioning block 103. Two sets of movable plates 7 are placed on both sides of the positioning block 103. In the initial state, the two sets of movable plates 7 are in contact with the positioning block 103 respectively. When connecting the cable tray body 2 and the movable plates 7, the cable tray body 2 is in contact with the positioning block 103. At this time, the mounting hole 201 and the connector are in the same vertical direction so that the cable tray body 2 and the movable plates 7 can be connected later.

[0050] The connector includes a plug rod 11 slidably disposed on the movable plate 7 and the connecting plate 1. The plug rod 11 is provided with two sets of plug blocks 8, and the plug blocks 8 are provided with guide slopes 801.

[0051] The connecting assembly further includes a slide rod 20 slidably disposed on the connecting plate 1, and a positioning spring 21 is sleeved on the slide rod 20. One end of the positioning spring 21 abuts against the plug rod 11, and the other end abuts against the connecting plate 1.

[0052] In particular, please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 12 The aforementioned positioning spring 21 is always in a compressed state, pushing the plug rod 11 and the plug block 8 toward the inside of the moving plate 7.

[0053] In accordance with the above, when connecting the cable tray body 2, first contact the cable tray body 2 with the positioning block 103, and then press down the connecting plate 1. During the pressing process, the cable tray body 2 will first contact the guide slope 801. As the connecting plate 1 continues to be pressed, the plug block 8 moves to the outside of the moving plate 7 and further compresses the positioning spring 21 until the connecting plate 1 can no longer be pressed. Then the upper cover of the cable tray body 2 contacts the upper inner wall of the moving plate 7.

[0054] At this time, the plug-in block 8 engages with the mounting hole 201. Immediately afterwards, the positioning spring 21 quickly releases its elastic potential energy, pushing the plug-in block 8 to reset and insert into the mounting hole 201, thereby realizing the rapid connection between the cable tray body 2 and the moving plate 7.

[0055] Furthermore, the connector is connected to an unlocking component disposed on the connecting plate 1, and the unlocking component is capable of driving the connector to separate from the cable tray body 2;

[0056] For details, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 9 , Figure 10 , Figure 11 , Figure 12 The unlocking component includes a driving structure and a triggering structure. Two sets of triggering structures are symmetrically arranged along the width direction of the connecting plate 1. Each set of triggering structures includes an unlocking rod 6 that is slidably disposed on the connecting plate 1. One end of the unlocking rod 6 is provided with a sliding cylinder 10, and the other end is provided with a wedge block 9. The sliding cylinder 10 is slidably connected to the plug-in rod 11.

[0057] Preferably, please refer to Figure 9 , Figure 10 The aforementioned wedge block 9 is configured as a "right-angled trapezoid" structure, and its inclined surface is configured as the trigger surface 901.

[0058] The drive structure includes a rotating plate 5 rotatably mounted on the connecting plate 1. The rotating plate 5 is positioned between the two sets of wedge blocks 9. The rotating plate 5 rotates to engage with the wedge blocks 9, forcing the two sets of unlocking rods 6 to move away from each other.

[0059] In particular, please see Figure 9 The two ends of the aforementioned rotating plate 5 are rounded to facilitate the subsequent engagement of the rotating plate 5 with the wedge blocks 9. A baffle 101 is provided on the connecting plate 1, and each set of rotating plates 5 engages with two sets of baffles 101. Furthermore, the two sets of wedge blocks 9 are symmetrical about the rotation axis of the rotating plate 5 (e.g., ...). Figure 9 , Figure 10 As shown), in the initial state, due to the cooperation of the two sets of baffles 101 and the positioning spring 21, the two ends of the rotating plate 5 are in contact with the trigger surfaces 901 of the two sets of wedge blocks 9 respectively, and the state of the rotating plate 5 is locked, which can prevent the rotating plate 5 from rotating freely and limit the rotation direction of the rotating plate 5 so that the operator can quickly rotate it in the direction of rotation when unlocking later, thereby realizing the quick disassembly of the moving plate 7 and the bridge body 2.

[0060] Specifically, when disassembling the movable plate 7 from the cable tray body 2, the rotating plate 5 is rotated clockwise. At this time, the rotating plate 5, with its end set with a guide arc, can cooperate with the trigger surface 901, pushing the two sets of wedge blocks 9 to drive the unlocking rod 6, the sliding cylinder 10, and the plug rod 11 away from each other. Then, the plug block 8 fixed on the plug rod 11 moves towards the outside of the connecting plate 1, further squeezing the positioning spring 21 and gradually disengaging from the mounting hole 201. After the plug block 8 is completely disengaged from the mounting hole 201, the separation of the cable tray body 2 from the movable plate 7 is completed. Then, the rotating plate 5 is released, and the positioning spring 21 pushes the plug rod 11 to drive the unlocking rod 6 and the wedge block 9 to quickly reset. During the reset process, the wedge block 9 can push the rotating plate 5 to reset so that the operator can separate the cable tray body 2 from the movable plate 7 next time.

[0061] Furthermore, please refer to Figures 1-9 The connecting plate 1 is also provided with a linkage component, which includes a locking structure and a telescopic structure. The telescopic structure connects two sets of the moving plates 7. The locking structure is used to release or lock the telescopic structure. When the telescopic structure is released, it pulls one set of the cable tray body 2. The telescopic structure can drive the two sets of moving plates 7 to move towards each other or away from each other at the same time.

[0062] The telescopic structure includes a main gear 1201 and a driven gear 1202 rotatably mounted on the connecting plate 1. The main gear 1201 and the driven gear 1202 mesh with each other, and both the main gear 1201 and the driven gear 1202 are provided with deflection cylinders 3. Each of the two sets of deflection cylinders 3 is inserted with a hinge rod 4, and the two sets of hinge rods 4 are respectively hinged to the two sets of moving plates 7.

[0063] Preferably, in the initial state, the two sets of movable plates 7 are attached to the positioning block 103. At this time, the locking structure fixes the telescopic structure so that the deflection cylinder 3 cannot rotate, so that the operator can connect the cable tray body 2 and the movable plate 7. After the two sets of cable tray bodies 2 are stably connected to the connecting plate 1, the overall length of the two sets of cable tray bodies 2 is the shortest.

[0064] Subsequently, the lengths of the two assembled cable tray bodies 2 were adjusted according to actual installation requirements;

[0065] Before adjustment, first release the telescopic structure by driving the locking mechanism so that the deflecting cylinder 3 can deflect. Then, pull one set of cable tray bodies 2 outward arbitrarily to... Figure 2 , Figure 6For reference, when the right-side cable tray body 2 is pulled outward, the right-side moving plate 7 pulls the hinge rod 4 and the deflection cylinder 3 to deflect counterclockwise. During the deflection, the hinge rod 4 extends outward. At the same time, the main gear 1201 and the driven gear 1202 enter a meshing transmission state, driving the driven gear 1202 to drive the left-side deflection cylinder 3 and the hinge rod 4 to rotate clockwise, thereby pushing the left-side moving plate 7 to spread the cable tray body 2 to the left. Through the cooperation of the telescopic structure, the two sets of cable tray bodies 2 can move towards or away from each other at the same time, realizing the rapid adjustment of the overall length of the cable tray body 2. After the adjustment is completed, the locking structure is driven to lock the telescopic structure again, which can fix the adjusted length and prevent the length of the previously connected cable tray body 2 from changing when connecting subsequent cable tray bodies 2. After all connections are completed, the locking structure is driven again to release the telescopic structure. During subsequent use, the cable tray body 2 will automatically adjust its overall length due to the stress generated by thermal expansion and contraction, thereby effectively absorbing the expansion.

[0066] Specifically, please refer to Figure 7 , Figure 8 The locking structure is set on the mounting part 102 fixed to the connecting plate 1, and includes a transmission part, a positioning part and a locking part. The transmission part includes a fixing ring 14 coaxially arranged with the main gear 1201. The fixing ring 14 has a toothed structure equidistantly opened along its circumference.

[0067] The positioning component includes a movable ring 15, on which a toothed structure is equidistantly formed along its circumference. The movable ring 15 is slidably connected to a mounting rod 19 mounted on the mounting component 102. An abutment spring 16 is sleeved on the mounting rod 19. One end of the abutment spring 16 abuts against the mounting component 102, and the other end abuts against the movable ring 15.

[0068] In particular, please see Figure 7 The toothed structures on the fixed ring 14 and the movable ring 15 are set as isosceles triangular toothed structures, and the abutment spring 16 is always in a compressed state, pushing the movable ring 15 and the fixed ring 14 closer together, so that the toothed structure of the movable ring 15 meshes with the toothed structure of the fixed ring 14.

[0069] The locking component includes a sleeve ring 18, which is sleeved on the movable ring 15 and placed in the movable groove 1501 opened on the movable ring 15. A threaded sleeve 17 is installed on the sleeve ring 18, and the threaded sleeve 17 is threadedly connected to a threaded rod 13 rotatably installed on the mounting component 102.

[0070] Specifically, the depth of the aforementioned movable groove 1501 is greater than the thickness of the sleeve ring 18, such as... Figure 7As shown, at this time, the moving ring 15 is in the released state, and the sleeve ring 18 is pushed by the abutment spring 16 and fits against the bottom of the moving groove 1501 near the abutment spring 16. The telescopic structure is released, and the overall length can be adjusted by pulling the cable tray body 2. In particular, during the pulling process, the plug rod 11 will slide inside the sliding cylinder 10 and will not disengage from the sliding cylinder 10, thereby facilitating the operator to perform the separation operation between the cable tray body 2 and the moving plate 7.

[0071] During adjustment, the deflection cylinder 3 drives the main gear 1201 and the fixed ring 14 to rotate. During the rotation, the toothed structure on the fixed ring 14 cooperates with the toothed structure on the moving ring 15, which can force the moving ring 15 to move and make room along the axial direction of the mounting rod 19. After the adjustment is completed, the moving ring 15 will re-engage with the fixed ring 14 under the drive of the abutment spring 16.

[0072] Subsequently, rotating the threaded rod 13 drives the threaded sleeve 17 to move the connecting ring 18 toward the deflection cylinder 3. During this process, the connecting ring 18 slides relative to the moving ring 15 until the threaded rod 13 can no longer rotate. At this point, the connecting ring 18 and the bottom of the moving groove 1501 away from the abutment spring 16 are in contact. At this time, the moving ring 15 and the fixed ring 14 are locked, locking the deflection cylinder 3 so that the moving plate 7 cannot slide relative to the connecting plate 1, thereby fixing the length of the cable tray body 2 for subsequent assembly and connection of the cable tray body 2. After all the cable tray bodies 2 are connected, the threaded rod 13 is reversed until it can no longer rotate. The threaded sleeve 17 drives the connecting ring 18 back to the initial position, releasing the telescopic structure. This provides controllable expansion play during the use of the cable tray body 2, preventing connection failure or deformation of the cable tray body 2 due to temperature changes during use.

[0073] A method for assembling an assembled cable tray with expansion play is also proposed, using an assembled cable tray with expansion play as described above, including the following steps:

[0074] Step 1: In the initial state, the telescopic structure is locked. When connecting the cable tray body 2, the cable tray body 2 is brought into contact with the positioning block 103. Then, the connecting plate 1 is pressed down. During the pressing process, the plug-in block 8 is squeezed inward by the cable tray body 2 until the plug-in block 8 is aligned with the mounting hole 201. Then, the plug-in block 8 quickly resets and is inserted into the mounting hole 201, thus realizing the connection between the moving plate 7 and the cable tray body 2.

[0075] Step 2: After connection, rotate the threaded rod 13 to release the telescopic structure. Then, as needed, pull one of the cable tray bodies 2. The telescopic structure will move, causing the two sets of moving plates 7 to drive the two sets of cable tray bodies 2 to spread inward or outward at the same time.

[0076] Step 3: Once the required length is reached, rotate the threaded rod 13 to lock the telescopic structure and fix the position of the moving plate 7 so that the two sets of cable tray bodies 2 are stably connected.

[0077] Step 4: When disassembly is required, rotate the rotating plate 5. The rotating plate 5 cooperates with the triggering structure to drive the plug block 8 out of the mounting hole 201, thereby separating the cable tray body 2 from the moving plate 7.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An assembled cable tray having an expanded void, comprising: Connecting plate (1), the connecting plate (1) is used to connect two sets of cable tray bodies (2); characterized in that: Two sets of movable plates (7) are symmetrically slidably arranged on the connecting plate (1). Each set of movable plates (7) has a connecting component on its left and right sides. The connecting component includes a connector that is elastically slidably arranged on the movable plate (7) and slidably connected to the connecting plate (1). When the two sets of cable tray bodies (2) are connected, the connector cooperates with the mounting hole (201) opened on the cable tray body (2) to fix the movable plate (7) to the cable tray body (2). The connector is connected to an unlocking component disposed on the connecting plate (1), and the unlocking component is capable of driving the connector to separate from the cable tray body (2); The connecting plate (1) is also provided with a linkage component, which includes a locking structure and a telescopic structure. The telescopic structure connects two sets of the moving plates (7). The locking structure is used to release or lock the telescopic structure. When the telescopic structure is released, it pulls one of the bridge body bodies (2). The telescopic structure can drive the two sets of moving plates (7) to move towards each other or away from each other at the same time.

2. The assembled cable tray with expansion allowance according to claim 1, characterized in that, The connector includes a plug rod (11) slidably disposed on the movable plate (7) and the connecting plate (1), and two sets of plug blocks (8) are provided on the plug rod (11), and a guide slope (801) is provided on the plug block (8).

3. An assembled cable tray with expansion allowance according to claim 2, characterized in that, The connecting assembly also includes a slide rod (20) slidably disposed on the connecting plate (1), and a positioning spring (21) is sleeved on the slide rod (20). One end of the positioning spring (21) abuts against the plug rod (11), and the other end abuts against the connecting plate (1).

4. An assembled cable tray with expansion allowance according to claim 2, characterized in that, The unlocking component includes a driving structure and a triggering structure. Two sets of triggering structures are symmetrically arranged along the width direction of the connecting plate (1). Each set of triggering structures includes an unlocking rod (6) that is slidably arranged on the connecting plate (1). One end of the unlocking rod (6) is provided with a sliding cylinder (10), and the other end is provided with a wedge block (9). The sliding cylinder (10) is slidably connected to the plug rod (11).

5. An assembled cable tray with expansion allowance according to claim 4, characterized in that, The drive structure includes a rotating plate (5) rotatably mounted on the connecting plate (1). The rotating plate (5) is positioned between two sets of wedge blocks (9). The rotating plate (5) rotates and can cooperate with the wedge blocks (9) to force the two sets of unlocking rods (6) to move away from each other.

6. An assembled cable tray with expansion allowance according to claim 4, characterized in that, The telescopic structure includes a main gear (1201) and a driven gear (1202) rotatably mounted on the connecting plate (1). The main gear (1201) and the driven gear (1202) mesh with each other, and both the main gear (1201) and the driven gear (1202) are provided with deflection cylinders (3). Both sets of deflection cylinders (3) are provided with hinge rods (4), and the two sets of hinge rods (4) are respectively hinged to the two sets of moving plates (7).

7. An assembled cable tray with expansion allowance according to claim 6, characterized in that, The locking structure is set on the mounting part (102) fixed to the connecting plate (1), including a transmission part, a positioning part and a locking part. The transmission part includes a fixing ring (14) coaxially arranged with the main gear (1201). The fixing ring (14) has a toothed structure equidistantly arranged along its circumference.

8. An assembled cable tray with expansion allowance according to claim 7, characterized in that, The positioning component includes a movable ring (15), on which a toothed structure is equidistantly provided along its circumference, and the movable ring (15) is slidably connected to the mounting rod (19) mounted on the mounting component (102). The mounting rod (19) is fitted with an abutment spring (16), one end of which abuts against the mounting component (102) and the other end of which abuts against the movable ring (15).

9. An assembled cable tray with expansion allowance according to claim 8, characterized in that, The locking component includes a sleeve ring (18), which is sleeved on the movable ring (15) and placed in a movable groove (1501) opened on the movable ring (15). A threaded sleeve (17) is installed on the sleeve ring (18), and the threaded sleeve (17) is threadedly connected to a threaded rod (13) rotatably installed on the mounting component (102).

10. A method for assembling an assembled cable tray with expansion allowance, characterized in that, The assembled cable tray with expansion allowance as described in claim 1 includes the following steps: Step 1: In the initial state, the telescopic structure is locked. When connecting the cable tray body (2), the cable tray body (2) is brought into contact with the positioning block (103), and then the connecting plate (1) is pressed down. During the pressing process, the plug-in block (8) is squeezed inward by the cable tray body (2) until the plug-in block (8) is aligned with the mounting hole (201). Then the plug-in block (8) quickly resets and is inserted into the mounting hole (201) to realize the connection between the moving plate (7) and the cable tray body (2). Step 2: After connection, rotate the threaded rod (13) to release the telescopic structure. Then, according to the needs, pull one of the cable tray bodies (2). The telescopic structure moves, causing the two sets of moving plates (7) to drive the two sets of cable tray bodies (2) to spread inward or outward at the same time. Step 3: After reaching the required length, rotate the threaded rod (13) to lock the telescopic structure and fix the position of the moving plate (7) so that the two sets of cable tray bodies (2) are stably connected. Step 4: When disassembly is required, rotate the rotating plate (5). The rotating plate (5) cooperates with the triggering structure to drive the plug block (8) out of the mounting hole (201) to separate the cable tray body (2) from the moving plate (7).

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