Cable bridge with expansion joints

Abstract

The invention relates to the technical field of cable bridges, and discloses a cable bridge with expansion joints, which comprises two cable bridge main bodies, expansion joint main bodies are slidably connected to the outer walls of the two cable bridge main bodies, and three air pressure sleeves are fixedly connected to the tops of the expansion joint main bodies. First air pressure cavities are formed in the inner walls of the three air pressure sleeves correspondingly, air in the first air pressure cavities and the second air pressure cavities is extruded by the extrusion assembly under the influence of the weight of the cable, so that air at the top and the bottom of a piston rod is in a high-pressure state, and when the cable at the main body part of the expansion joint vibrates, generated vibration is transmitted to a supporting plate; by means of compressibility of high-pressure gas on the two sides of the piston rod, vibration generated by the cable is absorbed, the vibration amplitude of the cable is reduced, and the situation that flexible connection between the expansion joint body and the cable bridge body easily causes increase of the vibration amplitude of the cable at the position, large pulling force is applied to the cable at the position, and the cable is easily damaged is effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of cable tray equipment, and particularly to a cable tray with a telescopic joint. Background Art

[0002] Cable trays are divided into trough type, tray type, ladder type, grid type and other structures, and are composed of brackets, cantilever arms and installation accessories. It is a metal or non-metal structure system used to support, protect and standardize cable wiring, and is widely used in fields such as construction, industry, electricity, and communication. Its core function is to centrally manage cables, avoid scattered laying, and at the same time provide mechanical protection and heat dissipation conditions. The cable tray telescopic joint is a telescopic adjustable connector used to span different distances or connect different parts of the cable tray wiring, with the characteristic of adjustable length. The telescopic joint is also used to avoid losses caused by cable displacement, distortion or breakage, and ensure the smooth flow of cables.

[0003] Among them, the cable trays located in pump rooms, such as water pump rooms and air pump rooms, will generate large vibrations during the operation of these devices, which are likely to cause vibrations in the cable trays, and may also cause vibrations in the cables in the trays. However, the connection between the telescopic joint and the rigid cable tray is a flexible connection. The cables swing under vibration, especially in the flexible area of the telescopic joint where there is a lack of restraint, which may exacerbate the vibration amplitude and easily lead to cable damage. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a cable tray with a telescopic joint, which includes two cable tray bodies, and a telescopic joint body is slidably connected to the outer walls of the two cable tray bodies; A bridge structure, a frame assembly is slidably arranged at the bottom of the bridge structure, and a support assembly is installed on the inner wall of the bridge structure. The frame assembly is used to place cables; A shock absorption mechanism, which is installed on the inner wall of the bridge structure and is used to reduce the vibration of the cables; and A return mechanism, which is located on the inner wall of the bridge structure and is used to limit the distance of the frame assembly; Three air pressure sleeves are fixedly connected to the top of the telescopic joint body, and an air pressure chamber one is opened on the inner wall of each of the three air pressure sleeves. A support plate is slidably connected to the inner wall of the telescopic joint body; Among them, the cables are placed through the bridge structure for support, and then the shock absorption mechanism is used to absorb the vibrations generated by the cables and reduce the vibration amplitude of the cables, effectively preventing the flexible connection between the telescopic joint body and the cable tray body from easily causing an increase in the vibration amplitude of the cables at this part. Finally, the distance between the two cable tray bodies is controlled by the return mechanism.

[0005] Preferably, the bridge structure includes: The frame component is slidably arranged at the inner wall of the frame component and the outer wall of the main body of the cable tray, and is used for placing cables; The support component is slidably arranged at the outer wall of the support component and the inner wall of the main body of the expansion joint, and is used for supporting the cable; Among them, after the operator finishes erecting the main body of the cable tray and the main body of the expansion joint, the cable is placed in the main body of the cable tray.

[0006] Preferably, the damping mechanism includes: The extrusion component is slidably arranged at the inner wall of the air pressure sleeve and is used for extruding gas; The blocking component is fixedly arranged at the inner wall of the air pressure sleeve and is used for blocking gas; Among them, when the cable is placed in the main body of the cable tray, the cable will squeeze the extrusion component to descend, so that the extrusion component extrudes the gas. Through the blocking component, the gas pressure will increase. Through the compressibility of the high-pressure gas, the vibration generated by the cable is absorbed, the vibration amplitude of the cable is reduced, and the pulling force on the cable at this part is reduced.

[0007] Preferably, the return mechanism includes: The pushing component is slidably arranged at the inner wall of the main body of the expansion joint and is used for pushing the main body of the cable tray; The clamping component is fixedly arranged at the top of the pushing component and is used for restricting the position of the cable; Among them, when the extrusion component descends, it will cause the pushing component to move horizontally, so that the pushing component contacts the main body of the cable tray, restricting the main body of the cable tray from moving too far. It effectively prevents the main body of the cable tray from vibrating for a long time and sliding too far, resulting in a large contact area between the main body of the cable tray on one side and the main body of the expansion joint, and a small contact area on the other side, resulting in a change in the support center of gravity of the main body of the expansion joint, resulting in the concentration of vibration energy on one side of the main body of the expansion joint, affecting the vibration reduction of the main body of the expansion joint for the cable. Then, the vibration direction of the cable is restricted by the clamping component.

[0008] Preferably, the frame component includes a cover plate slidably connected to the top of the main body of the cable tray; The support component includes three push rods fixedly connected to the bottom of the support plate, and the outer walls of the three push rods are slidably connected to the inner walls of the three air pressure sleeves; Among them, after the main body of the cable tray and the main body of the expansion joint are erected, by placing the cable at the inner wall of the main body of the cable tray, the cable will fall on the top of the support plate and squeeze the support plate to descend.

[0009] Preferably, the extrusion component includes a second air pressure chamber opened at the inner wall of the air pressure sleeve. Piston blocks are slidably connected to the inner walls of the three first air pressure chambers, and the tops of the three piston blocks are fixedly connected to the bottoms of the three push rods.

[0010] Preferably, the extrusion assembly further includes piston rods slidably connected to the inner wall of the second air pressure chamber, and the tops of the three piston rods are fixedly connected to the bottoms of the three piston blocks; Among them, when the support plate descends, it will drive the push rod and the piston block to descend, causing the piston rod to descend. When the piston block and the piston rod descend, they will respectively squeeze the gas in the first air pressure chamber and the second air pressure chamber, causing the pressure of the squeezed gas to increase. As the pressure of the squeezed gas in the first air pressure chamber continues to increase.

[0011] Preferably, the blocking assembly includes fixed rings fixedly connected to the inner wall of the air pressure sleeve. The inner walls of the three fixed rings are slidably connected to the outer walls of the three piston rods. The inner walls of the three fixed rings are all connected with air pipes in a penetrating manner. The inner walls of the three air pipes are all slidably connected with spring plugging rods; Among them, the high-pressure gas in the first air pressure chamber will push the spring plugging rod to descend, separate from the inclined surface of the air pipe, and leak out a gap. The high-pressure gas in the first air pressure chamber will enter the second air pressure chamber through the gap. Since the volume of the first air pressure chamber is larger than that of the second air pressure chamber, the air pressure at the top of the piston rod will also increase, making the gas at the top and bottom of the piston rod in a high-pressure state. When the cable tray main body is vibrated by the vibration generated in the pump room and the cable at the main body part of the expansion joint vibrates, the generated vibration will be transmitted to the support plate. Through the compressibility of the high-pressure gas on both sides of the piston rod, the vibration generated by the cable is absorbed, reducing the vibration amplitude of the cable, effectively preventing the flexible connection between the expansion joint main body and the cable tray main body, which is likely to cause the vibration amplitude of the cable to increase at this part, and the cable is likely to be damaged due to a large pulling force at this part.

[0012] Preferably, the pushing assembly includes two sliding blocks slidably connected to the inner wall of the expansion joint main body. Three air collecting grooves are provided in the inner walls of the two sliding blocks, and spring return rods are slidably connected to the inner walls of the six air collecting grooves.

[0013] Preferably, the pushing assembly further includes six connecting rods rotatably connected to the bottom of the support plate. The side walls of the six spring return rods are rotatably connected to the inner walls of the six connecting rods. Three special-shaped grooves are provided in the inner walls of the two sliding blocks; Among them, when the support plate descends, it will also push the connecting rod to rotate, push the spring reset rod to move, and let the spring reset rod push the sliding block to move, so that the sliding block contacts the main body of the cable tray. Since the cable is laid on the top of the main body of the cable tray and affected by the weight of the cable, the sliding block will be blocked. As the support plate continues to descend, the spring reset rod will be squeezed to accumulate resilience. When the vibration amplitude of the main body of the cable tray is large and it slides horizontally, it will squeeze the sliding block, causing the spring reset rod to accumulate resilience. As the resilience of the spring reset rod increases, when the amplitudes of the main body of the cable tray and the cable are large and there is a brief separation between them due to vibration, the resilience of the spring reset rod will be released, pushing the main body of the cable tray back into place, effectively preventing the main body of the cable tray from sliding horizontally with a large vibration amplitude. Long-term vibration is likely to cause the main body of the cable tray to slide a long distance, resulting in a large contact area between one side of the main body of the cable tray and the main body of the expansion joint and a small contact area on the other side, causing a change in the support center of gravity of the main body of the expansion joint and concentrating the vibration energy on one side of the main body of the expansion joint, affecting the vibration reduction of the cable by the main body of the expansion joint.

[0014] Preferably, the clamping assembly includes three fixed brackets fixedly connected to the top of the sliding block, and spring pressing rods are slidably connected to the inner walls of the six fixed brackets; Arc-shaped clamping blocks are arranged at the bottoms of the six fixed brackets, and the tops of the six arc-shaped clamping blocks are rotatably connected to the bottoms of the six spring pressing rods. The six spring pressing rods are divided into three groups, and fixing plates are fixedly connected to the tops of the two groups of spring pressing rods; Among them, when placing the cable, the cable will pass through the middle of the fixed bracket, and the outer wall of the cable will contact the arc-shaped clamping block. The arc-shaped clamping block will rotate to fit the cable, as shown in the state of G in the figure, squeezing the arc-shaped clamping block to rise, causing the spring pressing rod to be squeezed and accumulating resilience to limit the cable. Since multiple cables are usually placed in the main body of the cable tray, when the vibration amplitudes of multiple cables are different, when some of the multiple cables vibrate upward and the other part vibrates downward, since multiple spring pressing rods are connected to the fixing plate, the cables vibrating upward compress the corresponding spring pressing rods, generating a downward resilience, and the cables vibrating downward separate from the arc-shaped clamping blocks, causing the spring pressing rods to move downward, which will increase the total resilience, and the blocking force on the cables vibrating upward will increase, reducing the amplitude of the cables in a single direction and limiting their vibration amplitude, effectively preventing the inertial forces exerted on the main body of the expansion joint from being different due to different vibration amplitudes of multiple cables, resulting in different vibration forces on local areas of the main body of the expansion joint and possibly increasing the vibration amplitude of the main body of the expansion joint.

[0015] The present invention has the following beneficial effects: (1)When the present invention is in use, after the cable tray main body and the expansion joint main body are erected by the operator, the cable is placed in the cable tray main body. Affected by the weight of the cable, the extrusion assembly descends, compressing the gas in the first air pressure chamber and the second air pressure chamber. As the gas pressure in the first air pressure chamber continues to rise, the high-pressure gas will push the blocking assembly into the second air pressure chamber, making the gas at the top and bottom of the piston rod in a high-pressure state. When the cable in the expansion joint main body vibrates, the generated vibration will be transmitted to the support plate. Through the compressibility of the high-pressure gas on both sides of the piston rod, the vibration generated by the cable is absorbed, reducing the vibration amplitude of the cable, effectively preventing the flexible connection between the expansion joint main body and the cable tray main body, which is likely to cause the vibration amplitude of the cable to increase at this part, causing the cable to be subjected to a large pulling force at this part and easily leading to cable damage.

[0016] (2)When the support plate descends in the present invention, the sliding block is pushed by the pushing assembly to contact the cable tray main body, and the sliding block is blocked, causing the spring return rod to be squeezed. When the vibration amplitude of the cable tray main body is large and it slides horizontally, the sliding block will be squeezed, causing the spring return rod to accumulate return force. As the return force of the spring return rod increases, when the vibration amplitudes of both the cable tray main body and the cable are large and there is a brief separation between them due to the vibration, the spring return rod will push the cable tray main body back into place, effectively preventing the cable tray main body from vibrating for a long time and sliding a long distance, resulting in a large contact area between one side of the cable tray main body and the expansion joint main body and a small contact area on the other side, causing the support center of gravity of the expansion joint main body to change, resulting in the concentration of vibration energy on one side of the expansion joint main body and affecting the vibration reduction of the expansion joint main body on the cable.

[0017] (3)After the sliding block is blocked in the present invention, when the spring return rod continues to move, it will squeeze the gas in the air collecting groove and enter the left side of the spring return rod through the special-shaped groove. When the spring return rod pushes the cable tray main body back into place, it will squeeze the gas on the left side of the spring return rod again. Since the special-shaped groove has multiple complex flow channels, the flow rate of the gas will be slowed down, and the return speed of the spring return rod will be slowed down, effectively preventing the rapid release of the return force of the spring return rod, which may cause the spring return rod to vibrate and the support plate to vibrate, affecting the vibration reduction effect of the high-pressure gas on both sides of the piston rod on the cable.

[0018] When the cable is placed in the present invention, the cable passes through the middle of the fixing frame. Through the engaging component, the cable is squeezed to limit the cable. Since multiple cables are usually placed in the cable tray main body, when the vibration amplitudes of multiple cables are different, when some of the multiple cables vibrate upward and some vibrate downward, the cables vibrating upward compress the corresponding spring rods, generating a downward restoring force, increasing the blocking force on the cables vibrating upward, reducing the amplitude of the cables in a single direction, limiting their vibration amplitude, effectively preventing different vibration amplitudes of multiple cables, resulting in different inertial forces applied to the expansion joint main body, and causing different vibration forces on local areas of the expansion joint main body, which may lead to an increase in the vibration amplitude of the expansion joint main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic cross-sectional view of the cable tray main body of the present invention; Figure 4 It is a schematic cross-sectional view of the air pressure sleeve of the present invention; Figure 5 For the present invention Figure 4 The enlarged schematic diagram of A in; Figure 6 For the present invention Figure 4 The enlarged schematic diagram of B in; Figure 7 It is a schematic diagram of the working process of the arc-shaped clamping block of the present invention; Figure 8 It is a left view schematic diagram of the cable tray main body of the present invention.

[0021] In the drawings, the list of components represented by each reference numeral is as follows: In the figure: 1. Bridge frame mechanism; 11. Frame component; 12. Support component; 111. Main body of cable bridge; 112. Main body of expansion joint; 113. Cover plate; 121. Support plate; 122. Push rod; 2. Shock absorption mechanism; 21. Extrusion component; 22. Blocking component; 211. Pneumatic sleeve; 212. Piston block; 213. First pneumatic cavity; 214. Piston rod; 215. Second pneumatic cavity; 221. Fixed ring; 222. Gas pipeline; 223. Spring plug rod; 3. Return mechanism; 31. Pushing component; 32. Engaging component; 311. Sliding block; 312. Spring return rod; 313. Connecting rod; 314. Air collecting groove; 315. Special-shaped groove; 321. Fixed frame; 322. Spring extrusion rod; 323. Arc-shaped clamping block; 324. Fixed plate. Detailed implementation mode

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] Example 1, please refer to Figures 1-4 , the present invention is a cable bridge with an expansion joint, including two main bodies 111 of cable bridges, and an expansion joint main body 112 is slidably connected to the outer walls of the two main bodies 111 of cable bridges; Bridge frame mechanism 1, a frame component 11 is slidably arranged at the bottom of the bridge frame mechanism 1, and a support component 12 is installed on the inner wall of the bridge frame mechanism 1. The frame component 11 is used for placing cables; Shock absorption mechanism 2, the shock absorption mechanism 2 is installed on the inner wall of the bridge frame mechanism 1 for reducing the vibration of the cables; and Return mechanism 3, the return mechanism 3 is located on the inner wall of the bridge frame mechanism 1 for restricting the distance of the frame component 11; Three pneumatic sleeves 211 are fixedly connected to the top of the expansion joint main body 112, and a first pneumatic cavity 213 is opened in the inner walls of the three pneumatic sleeves 211. A support plate 121 is slidably connected to the inner wall of the expansion joint main body 112; Among them, the cables are placed through the bridge frame mechanism 1 to support the cables, and then through the shock absorption mechanism 2, the vibration generated by the cables is absorbed, and the vibration amplitude of the cables is reduced, effectively preventing the flexible connection between the expansion joint main body 112 and the main body 111 of the cable bridge from easily causing the vibration amplitude of the cables to increase at this part. Finally, the distance between the two main bodies 111 of the cable bridge is controlled through the return mechanism 3.

[0024] The bridge frame mechanism 1 includes: The frame component 11 is slidably arranged at the inner wall of the frame component 11 and the outer wall of the cable tray main body 111 for placing cables. The support component 12 is slidably arranged at the outer wall of the support component 12 and the inner wall of the expansion joint main body 112 for supporting cables. Among them, after the cable tray main body 111 and the expansion joint main body 112 are erected by the operator, the cables are placed in the cable tray main body 111.

[0025] The damping mechanism 2 includes: The extrusion component 21 is slidably arranged at the inner wall of the pneumatic sleeve 211 for extruding gas. The blocking component 22 is fixedly arranged at the inner wall of the pneumatic sleeve 211 for blocking gas. Among them, when placing cables in the cable tray main body 111, the cables will squeeze the extrusion component 21 to descend, causing the extrusion component 21 to extrude gas. Through the blocking component 22, the gas pressure will increase. By the compressibility of the high-pressure gas, the vibration generated by the cables is absorbed, the vibration amplitude of the cables is reduced, and the pulling force on the cables at this part is reduced.

[0026] The return mechanism 3 includes: The pushing component 31 is slidably arranged at the inner wall of the expansion joint main body 112 for pushing the cable tray main body 111. The clamping component 32 is fixedly arranged at the top of the pushing component 31 for restricting the position of the cables. Among them, when the extrusion component 21 descends, it will cause the pushing component 31 to move horizontally, making the pushing component 31 contact the cable tray main body 111, restricting the cable tray main body 111 from moving too far. This effectively prevents the cable tray main body 111 from vibrating for a long time and sliding too far, resulting in a large contact area between one side of the cable tray main body 111 and the expansion joint main body 112 and a small contact area on the other side, causing the support center of gravity of the expansion joint main body 112 to change, resulting in the vibration energy being concentrated on one side of the expansion joint main body 112, affecting the vibration reduction of the expansion joint main body 112 for the cables. Then, the clamping component 32 restricts the vibration direction of the cables.

[0027] Example two, please refer to Figures 1-8 , The present invention is a cable tray with an expansion joint. On the basis of Example one, the frame component 11 includes a cover plate 113 slidably connected to the top of the cable tray main body 111; The support component 12 includes three push rods 122 fixedly connected to the bottom of the support plate 121. The outer walls of the three push rods 122 are all slidably connected to the inner walls of the three pneumatic sleeves 211; After the cable tray main body 111 and the expansion joint main body 112 are erected, by placing the cable on the inner wall of the cable tray main body 111, the cable will fall on the top of the support plate 121, squeezing the support plate 121 to descend.

[0028] The extrusion assembly 21 includes a second air pressure chamber 215 opened on the inner wall of the air pressure sleeve 211. The inner walls of the three first air pressure chambers 213 are all slidably connected with piston blocks 212, and the tops of the three piston blocks 212 are fixedly connected to the bottoms of the three push rods 122.

[0029] The extrusion assembly 21 further includes a piston rod 214 slidably connected to the inner wall of the second air pressure chamber 215. The tops of the three piston rods 214 are fixedly connected to the bottoms of the three piston blocks 212; Among them, when the support plate 121 descends, it will drive the push rod 122 and the piston block 212 to descend, causing the piston rod 214 to descend. When the piston block 212 and the piston rod 214 descend, they will respectively squeeze the gas in the first air pressure chamber 213 and the second air pressure chamber 215, causing the pressure of the squeezed gas to increase. As the pressure of the squeezed gas in the first air pressure chamber 213 continues to increase.

[0030] The blocking assembly 22 includes a fixing ring 221 fixedly connected to the inner wall of the air pressure sleeve 211. The inner walls of the three fixing rings 221 are all slidably connected to the outer walls of the three piston rods 214. The inner walls of the three fixing rings 221 are all connected with an air delivery pipe 222 in a penetrating manner. The inner walls of the three air delivery pipes 222 are all slidably connected with a spring plugging rod 223; Among them, the high-pressure gas in the first air pressure chamber 213 will push the spring plugging rod 223 to descend, separating from the inclined surface of the air delivery pipe 222, leaking out a gap. The high-pressure gas in the first air pressure chamber 213 will enter the second air pressure chamber 215 through the gap. Since the volume of the first air pressure chamber 213 is larger than the volume of the second air pressure chamber 215, the air pressure at the top of the piston rod 214 will also increase, making the gas at the top and bottom of the piston rod 214 in a high-pressure state. When the cable tray main body 111 is vibrated by the pump room and the cable at the expansion joint main body 112 vibrates, the generated vibration will be transmitted to the support plate 121. Through the compressibility of the high-pressure gas on both sides of the piston rod 214, the vibration generated by the cable is absorbed, reducing the vibration amplitude of the cable, effectively preventing the flexible connection between the expansion joint main body 112 and the cable tray main body 111, which is likely to cause the vibration amplitude of the cable to increase at this part, making the cable subject to a large pulling force at this part and easily causing cable damage.

[0031] The pushing assembly 31 includes two sliding blocks 311 slidably connected to the inner wall of the expansion joint main body 112. The inner walls of the two sliding blocks 311 are both provided with three air collecting grooves 314. The inner walls of the six air collecting grooves 314 are all slidably connected with spring return rods 312.

[0032] The pushing component 31 further includes six connecting rods 313 rotatably connected to the bottom of the support plate 121. The side walls of the six spring return rods 312 are rotatably connected to the inner walls of the six connecting rods 313. Three special-shaped grooves 315 are formed in the inner walls of the two sliding blocks 311 respectively. Among them, when the support plate 121 descends, it will also push the connecting rod 313 to rotate, push the spring return rod 312 to move, and let the spring return rod 312 push the sliding block 311 to move, so that the sliding block 311 contacts the cable tray main body 111. Since the cable is laid on the top of the cable tray main body 111, affected by the weight of the cable, the sliding block 311 will be blocked. When the support plate 121 continues to descend, the spring return rod 312 will be squeezed to accumulate the resilience. When the vibration amplitude of the cable tray main body 111 is large and it slides horizontally, it will squeeze the sliding block 311, so that the spring return rod 312 accumulates the resilience. As the resilience of the spring return rod 312 increases, when the cable tray main body 111 and the cable have a large amplitude of vibration and there is a short separation between them due to the vibration, the resilience of the spring return rod 312 will be released, pushing the cable tray main body 111 back to its position, effectively preventing the cable tray main body 111 from sliding horizontally with a large vibration amplitude. After a long time of vibration, it is easy for the cable tray main body 111 to slide a long distance, resulting in a large contact area between one side of the cable tray main body 111 and the expansion joint main body 112, and a small contact area on the other side, resulting in a change in the support center of gravity of the expansion joint main body 112, and causing the vibration energy to be concentrated on one side of the expansion joint main body 112, affecting the vibration reduction of the expansion joint main body 112 for the cable.

[0033] The clamping component 32 includes three fixing frames 321 fixedly connected to the top of the sliding block 311. Spring pressing rods 322 are slidably connected to the inner walls of the six fixing frames 321 respectively. Arc-shaped clamping blocks 323 are arranged at the bottoms of the six fixing frames 321. The tops of the six arc-shaped clamping blocks 323 are rotatably connected to the bottoms of the six spring pressing rods 322. The six spring pressing rods 322 are divided into two groups of three. Fixing plates 324 are fixedly connected to the tops of the two groups of spring pressing rods 322 respectively. Among them, when placing the cable, the cable will pass through the middle of the fixing frame 321, so that the outer wall of the cable contacts the arc-shaped clamping block 323, and the arc-shaped clamping block 323 will rotate to fit the cable, as Figure 7As shown by the state of G in the figure, the pressing arc-shaped clamping block 323 rises, squeezing the spring pressing rod 322, accumulating the resilience, and limiting the cable. Since multiple cables are usually placed in the cable tray main body 111, when the vibration amplitudes of multiple cables are different, and when some of the multiple cables vibrate upward while some vibrate downward, because multiple spring pressing rods 322 are connected to the fixed plate 324, the cables vibrating upward compress the corresponding spring pressing rods 322, generating a downward resilience. The cables vibrating downward separate from the arc-shaped clamping block 323, causing the spring pressing rods 322 to move downward, which will enhance the total resilience. The blocking force on the cables vibrating upward will increase, reducing the amplitude of the cables in a single direction and limiting their vibration amplitude. This effectively prevents the differences in the inertial forces exerted on the expansion joint main body 112 due to the different vibration amplitudes of multiple cables, which may cause different vibration forces on local areas of the expansion joint main body 112 and may lead to an increase in the vibration amplitude of the expansion joint main body 112.

[0034] The quantity of the above components is not limited, and those skilled in the relevant art can freely set it according to actual needs, as long as the above components are installed at the corresponding component connection positions.

[0035] A specific application of this embodiment is as follows: When the present invention is in use, after the operator has set up the cable tray main body 111 and the expansion joint main body 112, the cables are placed in the cable tray main body 111. Since the top of the support plate 121 is higher than the bottom of the cable tray main body 111, the cables will rest on the support plate 121. Affected by the weight of the cables, the support plate 121 will descend, driving the push rod 122 and the piston block 212 to descend, causing the piston rod 214 to descend. When the piston block 212 and the piston rod 214 descend, they will respectively squeeze the gases in the first air pressure chamber 213 and the second air pressure chamber 215, increasing the pressure of the squeezed gases. As the pressure of the squeezed gas in the first air pressure chamber 213 continues to rise, the high-pressure gas in the first air pressure chamber 213 will push the spring plugging rod 223 to descend, separating from the inclined surface of the air delivery pipe 222 and leaking a gap. The high-pressure gas in the first air pressure chamber 213 will enter the second air pressure chamber 215 through the gap. Since the volume of the first air pressure chamber 213 is larger than that of the second air pressure chamber 215, the air pressure at the top of the piston rod 214 will also increase, making the gases at the top and bottom of the piston rod 214 both in a high-pressure state. When the cable tray main body 111 is affected by the vibration generated by the pump room and the cables at the expansion joint main body 112 vibrate, the generated vibration will be transmitted to the support plate 121. Through the compressibility of the high-pressure gases on both sides of the piston rod 214, the vibration generated by the cables is absorbed, reducing the vibration amplitude of the cables and effectively preventing the flexible connection between the expansion joint main body 112 and the cable tray main body 111, which is likely to cause an increase in the vibration amplitude of the cables at this part and a large pulling force on the cables at this part, easily leading to cable damage. Secondly, when the support plate 121 descends, it will also push the connecting rod 313 to rotate and push the spring return rod 312 to move. Then, the spring return rod 312 will push the sliding block 311 to move, causing the sliding block 311 to contact the cable tray main body 111. Since the cable is laid on the top of the cable tray main body 111, affected by the weight of the cable, the sliding block 311 will be blocked. As the support plate 121 continues to descend, the spring return rod 312 will be squeezed, storing the resilience. When the vibration amplitude of the cable tray main body 111 is large and it slides horizontally, it will squeeze the sliding block 311, causing the spring return rod 312 to store the resilience. As the resilience of the spring return rod 312 increases, when the vibration amplitudes of the cable tray main body 111 and the cable are large and there is a brief separation between them due to vibration, the resilience of the spring return rod 312 will be released, pushing the cable tray main body 111 back to its original position, effectively preventing the cable tray main body 111 from sliding horizontally with a large vibration amplitude. Long-term vibration can easily cause the cable tray main body 111 to slide a long distance, resulting in a large contact area between one side of the cable tray main body 111 and the expansion joint main body 112 and a small contact area on the other side, causing a change in the support center of gravity of the expansion joint main body 112 and concentrating the vibration energy on one side of the expansion joint main body 112, affecting the vibration reduction of the cable by the expansion joint main body 112; Secondly, after the sliding block 311 is blocked, when the spring return rod 312 continues to move, it will squeeze the gas in the air collecting groove 314, causing the squeezed gas to enter the special-shaped groove 315 and then enter the left side of the spring return rod 312 through the special-shaped groove 315. When the resilience of the spring return rod 312 is released to push the cable tray main body 111 back to its original position, it will squeeze the gas on the left side of the spring return rod 312 again and enter the special-shaped groove 315. Since the special-shaped groove 315 has multiple complex flow channels, it will slow down the gas flow rate and the return speed of the spring return rod 312, effectively preventing the rapid release of the resilience of the spring return rod 312, which may cause the spring return rod 312 to vibrate and the support plate 121 to vibrate, affecting the vibration reduction effect of the high-pressure gas on both sides of the piston rod 214 on the cable; Secondly, when placing the cable, the cable will pass through the middle of the fixing frame 321, making the outer wall of the cable contact the arc-shaped clamping block 323. The arc-shaped clamping block 323 will rotate to fit the cable, as Figure 7As shown by the state of G in the figure, the extrusion arc-shaped clamping block 323 rises, causing the spring extrusion rod 322 to be extruded, accumulating resilience, and limiting the cable. Since multiple cables are usually placed in the cable tray main body 111, when the vibration amplitudes of multiple cables are different, when some of the multiple cables vibrate upward and some vibrate downward, because multiple spring extrusion rods 322 are connected to the fixed plate 324, the cables vibrating upward compress the corresponding spring extrusion rods 322, generating a downward resilience. The cables vibrating downward are separated from the arc-shaped clamping block 323, causing the spring extrusion rods 322 to move downward, which will increase the total resilience, and the blocking force on the cables vibrating upward will increase, reducing the amplitude of the cables in a single direction and limiting their vibration amplitude. This effectively prevents the differences in the inertial forces exerted on the expansion joint main body 112 due to the different vibration amplitudes of multiple cables, which may cause different vibration forces on local areas of the expansion joint main body 112 and may lead to an increase in the vibration amplitude of the expansion joint main body 112.

[0036] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A cable tray with an expansion joint, comprising two cable tray bodies (111), and an expansion joint body (112) is slidably connected to the outer walls of the two cable tray bodies (111), characterized in that, It further includes: A bridge frame mechanism (1), at the bottom of the bridge frame mechanism (1), a frame assembly (11) is slidably arranged, and at the inner wall of the bridge frame mechanism (1), a support assembly (12) is installed and arranged, and the frame assembly (11) is used for placing cables; A shock absorption mechanism (2), the shock absorption mechanism (2) is installed at the inner wall of the bridge frame mechanism (1) for reducing the vibration of the cables; and A return mechanism (3), the return mechanism (3) is located at the inner wall of the bridge frame mechanism (1) for restricting the distance of the frame assembly (11); At the top of the telescopic joint body (112), three air pressure sleeves (211) are fixedly connected, in the inner walls of the three air pressure sleeves (211), an air pressure chamber one (213) is opened, and a support plate (121) is slidably connected in the inner wall of the telescopic joint body (112); Wherein, the cables are placed through the bridge frame mechanism (1) to support the cables, then the vibration amplitude of the cables is reduced through the shock absorption mechanism (2), and finally the distance between the two cable bridge main bodies (111) is controlled through the return mechanism (3).

2. The cable tray with an expansion joint according to claim 1, wherein: The bridge frame mechanism (1) includes: A frame assembly (11), at the inner wall of the frame assembly (11), it is slidably arranged with the outer wall of the cable bridge main body (111) for placing cables; A support assembly (12), at the outer wall of the support assembly (12), it is slidably arranged with the inner wall of the telescopic joint body (112) for supporting cables.

3. The cable tray with an expansion joint according to claim 2, characterized in that: The shock absorption mechanism (2) includes: An extrusion assembly (21), the extrusion assembly (21) is slidably arranged in the inner wall of the air pressure sleeve (211) for extruding gas; A blocking assembly (22), the blocking assembly (22) is fixedly arranged in the inner wall of the air pressure sleeve (211) for blocking gas; Wherein, when cables are placed in the cable bridge main body (111), the cables will squeeze the extrusion assembly (21) to descend, so that the extrusion assembly (21) extrudes gas, and through the blocking assembly (22), the gas pressure will increase to absorb the vibration force generated by the cables.

4. A cable tray with an expansion joint according to claim 3, characterized in that: The return mechanism (3) includes: A pushing assembly (31), the pushing assembly (31) is slidably arranged in the inner wall of the telescopic joint body (112) for pushing the cable bridge main body (111); A clamping assembly (32), the clamping assembly (32) is fixedly arranged at the top of the pushing assembly (31) for restricting the position of the cables; Wherein, when the extrusion assembly (21) descends, it will make the pushing assembly (31) move laterally, so that the pushing assembly (31) contacts the cable bridge main body (111) to restrict the cable bridge main body (111) from moving too far, and then the vibration direction of the cables is restricted through the clamping assembly (32).

5. The cable tray with an expansion joint according to claim 4, characterized in that: The frame assembly (11) includes a cover plate (113) slidably connected to the top of the cable bridge main body (111); The support assembly (12) includes three push rods (122) fixedly connected to the bottom of the support plate (121), and the outer walls of the three push rods (122) are all slidably connected to the inner walls of the three air pressure sleeves (211); After the cable tray main body (111) and the expansion joint main body (112) are erected, by placing the cable on the inner wall of the cable tray main body (111), the cable will fall on the top of the support plate (121), squeezing the support plate (121) to descend.

6. The cable tray with an expansion joint according to claim 5, characterized in that: The extrusion assembly (21) includes a second air pressure chamber (215) opened on the inner wall of the air pressure sleeve (211). A piston block (212) is slidably connected to the inner walls of the three first air pressure chambers (213). The tops of the three piston blocks (212) are fixedly connected to the bottoms of the three push rods (122).

7. The cable tray with an expansion joint according to claim 6, wherein: The extrusion assembly (21) further includes a piston rod (214) slidably connected to the inner wall of the second air pressure chamber (215). The tops of the three piston rods (214) are fixedly connected to the bottoms of the three piston blocks (212). Among them, when the support plate (121) descends, it will drive the push rod (122) to squeeze the piston block (212) to descend, causing the piston rod (214) to descend, respectively squeezing the gas in the first air pressure chamber (213) and the second air pressure chamber (215). The gas in the first air pressure chamber (213) will enter the second air pressure chamber (215) through the blocking assembly (22), increasing the gas pressure in the second air pressure chamber (215).

8. The cable tray with expansion joints according to claim 7, characterized in that: The blocking assembly (22) includes a fixed ring (221) fixedly connected to the inner wall of the air pressure sleeve (211). The inner walls of the three fixed rings (221) are slidably connected to the outer walls of the three piston rods (214). The inner walls of the three fixed rings (221) are all connected through an air pipe (222). A spring plug rod (223) is slidably connected to the inner wall of each of the three air pipes (222). Among them, as the piston block (212) continues to move, the gas pressure inside the first air pressure chamber (213) will increase. The high-pressure gas will then push the spring plug rod (223) into the second air pressure chamber (215), making both sides of the piston rod (214) under high pressure.

9. The cable tray with an expansion joint according to claim 8, characterized in that: The pushing assembly (31) includes two sliding blocks (311) slidably connected to the inner wall of the expansion joint main body (112). Three air collecting grooves (314) are opened on the inner walls of the two sliding blocks (311). A spring return rod (312) is slidably connected to the inner walls of the six air collecting grooves (314).

10. A cable tray with an expansion joint according to claim 9, characterized in that: The pushing assembly (31) further includes six connecting rods (313) rotatably connected to the bottom of the support plate (121). The side walls of the six spring return rods (312) are rotatably connected to the inner walls of the six connecting rods (313). Three special-shaped grooves (315) are opened on the inner walls of the two sliding blocks (311). Among them, when the support plate (121) descends, it will also push the connecting rod (313) to rotate, pushing the spring return rod (312) and the sliding block (311) to move, making the sliding block (311) contact the side wall of the cable tray main body (111), causing the spring return rod (312) to be pressed and squeezed.

11. A cable tray with an expansion joint according to claim 10, characterized in that: The clamping assembly (32) includes three fixing brackets (321) fixedly connected to the top of the sliding block (311), and spring pressing rods (322) are slidably connected to the inner walls of the six fixing brackets (321); Arc-shaped clamping blocks (323) are arranged at the bottoms of the six fixing brackets (321), the tops of the six arc-shaped clamping blocks (323) are rotatably connected to the bottoms of the six spring pressing rods (322), the six spring pressing rods (322) are grouped in threes, and fixing plates (324) are fixedly connected to the tops of the two groups of spring pressing rods (322); Among them, when placing a cable in the cable tray main body (111), the cable will pass through the sliding block (311) and contact the arc-shaped clamping block (323), so that the arc-shaped clamping block (323) fits against the outer wall of the cable to restrict the position of the cable.

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